Optimization of a Dual-Fuel Low-NOx Combustion System for a Tangentially-Fired Utility Boiler Operating at a High Elevation.
|
|
- Shannon Wilkins
- 6 years ago
- Views:
Transcription
1 Optimization of a Dual-Fuel Low-NOx Combustion System for a Tangentially-Fired Utility Boiler Operating at a High Elevation. by F. McKenty, N. Brais, M. Mifuji, L. Gravel, and Y. Sirois STAR Global Energy Forum Houston, Tx June, 2009 Brais Malouin & Associates Inc. 144 Barr Street, St-Laurent, Qc. Canada, H4T 1Y4 Tel: (514)
2 Images courtesy of Cerrey S.A. de C.V. Av. Republicana Mexicana 300 San Nicolas de Los Garza, N.L. Mexico C.P Industrial Boiler Manufacturer
3 Overview Motivation Objectives Problem Description CFD Modeling Results & Analysis Summary Conclusion 3
4 Introduction Motivation Stricter pollutant emission regulations are presenting new challenges to boiler and burner manufacturers in order to meet the new emission specifications. Develop new Boiler/Burner designs Retro-fit existing boilers with new combustion systems capable of meeting the emission specifications. Physical constraints limit the positioning of the new combustion system. Re-use existing components (fans, ducts etc..) as much possible to limit costs. Maintain the existing boiler s operational characteristics: Wall heat transfer Heat transferred to Superheaters, Reheaters and Convection Banks Gas temperature at key locations 4
5 Introduction Objective Replace the existing 32 burner (16 Natural Gas and 16 Heavy Oil #6) Tangentially Fired combustion system with a new Low NOx combustion system having 16 Dual-Fuel burners and 8 Over Fire Air (OFA ) ports. Use CFD to optimize the combustion system s firing angles in order to maintain the existing boiler s operational characteristics 5
6 Problem description Tangentially fired boilers Operating principal: Four or more burners located in the corners or on the boiler walls are fired tangentially to a target circle located at the center of the boiler. Objective: Create a rotating flow pattern in the center of the furnace. Use the furnace as a mixing vessel. Create a fireball in the middle of the furnace instead of several individual flames. This type of boiler design was originally developed for coal firing in order to minimize the space required for large utility boilers. 6
7 Problem description Tangentially fired boilers The size (diameter and height) of the fireball is highly dependant on the diameter of the target circle. If the target circle diameter is too large; the diameter of the fireball could increase until it reaches the furnace walls. If the target circle diameter is too small; the jets could impinge with one another and the rotating motion of the flow is lost. The size of the fireball is dependant on burner jet penetration into the furnace. Jet penetration is a function of jet momentum. Increased jet momentum means increased penetration and higher jet velocities at the location of the target circle and vice versa. 7
8 Problem description Tangentially fired boilers Increasing or decreasing the momentum of the burner jets will change the furnace aerodynamics. A target circle that was adequate for a given burner (jet momentum) may yield an inappropriate shape of the fireball if the burners are replaced with burners having jets with more or less momentum than the original burners. Jet momentum is defined as: G = mv = ρ V A V = (N ) Density decreases with altitude. m V = ρ A Velocity increases with altitude for a given flow rate. An increase in velocity will increase jet momentum. Consequence: A target circle diameter that is optimal at sea level may no longer be adequate when the boiler is located at high altitude (2000 ft and more). 8
9 Problem description Tangentially fired boilers Example: Comparison of a natural gas flame with standard target circle diameter for a single burner level T-fired boiler at sea level and at 5200ft altitude. Fireball at sea level Fireball at 5200 ft 9
10 Problem description Tangentially fired boilers Example: Comparison of a natural gas flame with the target circle diameter optimized for operation at sea level for a single level T-fired boiler with the same design operating at 5200ft altitude. Fireball at sea level Fireball at 5200 ft 10
11 Problem description Tangentially fired boilers Additional problems are encountered when trying to optimize the firing configuration for both Natural Gas and Heavy Oil firing: The optimal target circle diameter for natural gas firing is most often too small for Oil firing because of the difference in the distribution of momentum in the flames. The core of the central vortex for oil flames can become unstable. 1 st burner level - NG 1 st burner level Oil #6 11
12 Problem description Tangentially fired boilers Combustion of the fuel increases the gas temperature in the burner jet and causes the expansion of hot combustion gases. Dual-Fuel (54% Oil 46% NG) Firing Temperature (K) 12
13 Problem description Tangentially fired boilers The expansion of the gases causes local acceleration in the jet in the ratio of about 5/1. Dual-Fuel (54% Oil 46% NG) Firing Velocity Magnitude (m/s) 13
14 Problem description Tangentially fired boilers The local acceleration is more pronounced and localized for heavy oil burners because all the fuel is concentrated in front of the oil gun. Dual-Fuel (54% Oil 46% NG) Firing Velocity Magnitude (m/s) 14
15 Problem description Tangentially fired boilers The jets from Oil flames usually have much higher momentum and penetration than Natural Gas flames. It is obvious that the optimal target circle diameter will be different depending on the fuel. The problem is compounded when operating at high altitudes because the effect on gas firing does not vary proportionally to the effect on oil firing. 15
16 Problem description Tangentially fired boilers The firing angles should be determined according to the burner design, fuels to be fired and the altitude at which the unit will operate. The target circle for dual fuel burners must be a compromise between the optimal firing angles for Natural Gas and the optimal firing angles for Heavy Oil. Natural Gas Firing Oil #6 Firing Burner Level 1 - Velocity Magnitude (m/s) 16
17 Problem description Tangentially fired boilers Even when the optimal firing angles for Natural Gas have been modified to accommodate oil firing, the final firing angles for Natural Gas yield a much smaller vortex diameter in the center of the furnace. Reducing the vortex diameter helps keep the reacting regions away from the furnace walls. NG-Firing Original sea level firing angles NG-Firing Optimized firing angles Burner Level 1 - Velocity Magnitude (m/s) 17
18 Problem description Tangentially Fired 300MW Utility Boiler Boiler Characteristics: 300 MW Utility Boiler Gross Heat Input : 800MW (2725 MMBTU/hr) Steam Generation : 907,000 kg/hr (2,000,000 lbs/hr) Altitude : 1722 m (5649 ft) Project: Replace the existing combustion system (32 burners : 16 NG, 16 Oil) with a new 16 Dual-Fuel tilt-burner Low NOx firing system. New Combustion System characteristics: 16 tilting burners 8 OFA ports The firing system must be able to operate with: Natural Gas Heavy Oil #6 Dual Fuel Firing (NG and Oil) 25% FGR 12% Excess Air 18
19 Problem description Tangentially Fired 300MW Utility Boiler: New Combustion System : Most of the NOx produced in this furnace are the result of thermal NOx formation. Thermal NOx formation requires: High temperatures (T>1800K). The presence of sufficient quantities of oxygen and nitrogen. Limiting Thermal NOx formation in this furnace is achieved by: Fuel Staging at the burner level Fuel and air are injected in such a way as to minimize the presence of high temperature zones and high concentrations of oxygen at the same place. Furnace Staging The overall Fuel/Air mixture at the burner level is maintained fuel-rich in order to minimize NOx formation by denying the reaction the necessary oxygen. The remainder of the combustion air is injected at the OFA level once the temperature of the combustion products has decreased. Secondary combustion, in excess air, at the OFA level of the CO remaining in the combustion products therefore takes place at a lower temperature and produce less thermal NOx. 19
20 Problem description Tangentially Fired 300MW Utility Boiler: New Combustion System : CFD investigation of the new combustion system: Determine the optimal tangential burner firing angles to: Ensure stable fireball aerodynamics for all fuels fired at the given altitude. Ensure adequate mixing of Combustion Products and OFA for complete combustion. Avoid flame impingement on the superheaters and the furnace walls. Ensure that the furnace heat transfer characteristics are similar to those of Cerrey s performance run predictions (idealized design cases) for each type of fuel firing by comparing theoretical and CFD predictions of Furnace Outlet Plane (FOP) gas temperatures. 20
21 CFD Modeling Numerical Models Code: STAR-CD Fluid Flow Steady-State (SIMPLE) Oil Droplets Lagrangian Particle Tracking Model - Coupled Turbulence High-Reynolds k-ε Model Radiation Discrete Ordinate Model Participating Media Radiation Model Superheaters, Re-Heaters and Economizer Volumetric heat-sink corresponding to empirical measurements => sorent.f Source term for dp according to empirical measurements => sormom.f 21
22 CFD Modeling Numerical Models Combustion In-house 5 fluid stream combustion model implemented with STAR-CD User Subroutines sorsca.f and scalfn.f The 5 fluid streams represent: Heavy Oil #6 Natural Gas FGR Gases Dry Combustion Air Water Vapor NOTE: - Because of the varying levels of humidity (0% in Natural Gas to 100% in the oil atomizing steam) streams 1-4 are considered dry. - The humidity content of the different streams is modeled using the 5 th scalar for water vapor. 22
23 CFD Modeling Numerical Models Combustion Primary Reaction Model Each fuel stream is considered to react independently of the others. Combustion air within a given cell is distributed proportionally between the different fuel streams present. Chemical Equilibrium solution (Gibbs Free Energy Minimization) for the reaction of each fuel stream with its portion of the combustion air. Transport equation for CO CO concentrations obtained from the chemical equilibrium model in the Reacting zones are used as the source of CO production for the kinetically controlled transport equation Transport equation for NOx Reaction rate for thermal NOx production based on the Zeldovich mechanism Final combustion product concentrations are obtained by recombining the products from each of the streams and transport equations. 23
24 CFD Modeling Discretization: Detailed Burner 24
25 CFD Modeling Discretization: Detailed Burner - 4 million cells 25
26 CFD Modeling Inlet Boundary Conditions for the Boiler Simulations are obtained from the Detailed Burner Simulations 26
27 CFD Modeling Discretization: Boiler & Burners - 8 million cells 27
28 Results and Analysis Optimization of the Firing System 25 different burner angles and OFA placement configurations were tested with CFD. The final firing system design allows for both Natural Gas and Oil #6 fireball flames to develop properly and be contained inside the furnace area. The final Firing System / OFA design allows for all combustion products to be properly mixed within the furnace area. The final firing system design was also verified to operate properly at 50% turndown. 28
29 Results and Analysis Natural Gas Firing 29
30 Results and Analysis Natural Gas Firing Burner Level 1 - Velocity Magnitude (m/s) 30
31 Results and Analysis Natural Gas Firing Burner Level 2 - Velocity Magnitude (m/s) 31
32 Results and Analysis Natural Gas Firing Burner Level 3- Velocity Magnitude (m/s) 32
33 Results and Analysis Natural Gas Firing Burner Level 4 - Velocity Magnitude (m/s) 33
34 Results and Analysis Natural Gas Firing OFA Level - Velocity Magnitude (m/s) 34
35 Results and Analysis Natural Gas Firing Temperature (K) 35
36 Results and Analysis Natural Gas Firing Furnace Centerline - Temperature (K) 36
37 Results and Analysis Natural Gas Firing Platen SH3 - Gas Temperature (K) 37
38 Results and Analysis Natural Gas Firing Right view Left view Furnace Wall Heat Flux (W/m 2 ) 38
39 Results and Analysis Heavy Oil #6 Firing 39
40 CFD Analysis - Salamanca Unit 3 Oil #6 Firing Droplets diameter (m) 40
41 CFD Analysis - Salamanca Unit 3 Oil #6 Firing Velocity Magnitude (m/s) 41
42 Results and Analysis Oil #6 Firing Burner Level 1 - Velocity Magnitude (m/s) 42
43 Results and Analysis Oil #6 Firing Burner Level 2 - Velocity Magnitude (m/s) 43
44 Results and Analysis Oil #6 Firing Burner Level 3- Velocity Magnitude (m/s) 44
45 Results and Analysis Oil #6 Firing Burner Level 4 - Velocity Magnitude (m/s) 45
46 Results and Analysis Oil #6 Firing OFA Level - Velocity Magnitude (m/s) 46
47 Results and Analysis Oil #6 Firing Temperature (K) 47
48 Results and Analysis Oil #6 Firing Furnace Centerline - Temperature (K) 48
49 Results and Analysis Oil #6 Firing Platen SH3 - Gas Temperature (K) 49
50 Results and Analysis Oil #6 Firing Right view Left view Furnace Wall Heat Flux (W/m 2 ) 50
51 Results and Analysis Dual-Fuel (54% Oil 46% NG) Firing 51
52 Results and Analysis Dual-Fuel (54% Oil 46% NG) Firing Velocity Magnitude (m/s) 52
53 Results and Analysis Dual-Fuel (54% Oil 46% NG) Firing Temperature (K) 53
54 Results and Analysis Dual-Fuel (54% Oil 46% NG) Firing Furnace Centerline - Temperature (K) 54
55 Results and Analysis Dual-Fuel (54% Oil 46% NG) Firing Platen SH3 - Gas Temperature (K) 55
56 Results and Analysis Dual-Fuel (54% Oil 46% NG) Firing Right view Left view Furnace Wall Heat Flux (W/m 2 ) 56
57 Results and Analysis Comparisons of Natural Gas, Oil#6 and Dual Fuel Firing 57
58 Results and Analysis Temperature Contours VS Type of Fuel Fired Gas Oil #6 Dual Fuel Furnace Centerline - Temperature (K) 58
59 Results and Analysis Luminous Flame Contour VS Type of Fuel Fired Gas Oil #6 Dual Fuel 59
60 Results and Analysis OPTIMIZED FIRING SYSTEM RESULTS Case CFD T(K) FOP Cerrey T(K) FOP relative difference of FOP Temperatures Natural Gas % Oil # % Dual Fuel (54% Oil 46% NG) % 60
61 Summary The STAR-CD simulations have enabled us to design a combustion system with the following characteristics: The optimized burner firing angles enable complete mixing of combustion products and Over Fire Air before leaving the furnace for all three firing modes. The temperature of the combustion products at the FOP (Furnace Outlet Plane) closely match with Cerrey s design predictions. The temperatures at the FOP correspond to the inlet temperatures of Platen SH3, and these temperatures closely match design values so the Platen SH3 should not be subject to excessive heating. The gas temperature contours in the furnace area are similar for all three firing modes; the oil flames being slightly hotter. 61
62 Summary The STAR-CD simulations have enabled us to design a combustion system with the following characteristics. The Luminous Flame Contours are similar for all three fuels. The Furnace Wall Heat Fluxes are within normal values for natural gas and heavy oil flames. Wall Heat Fluxes are normally higher for Oil than NG because of the increased radiation from the Oil flame. The wall heat flux corresponding to the dual-fuel fireball is between the two extremes as expected. The steady-state simulation results show that emissions and temperatures will be within technical specifications. 62
63 Conclusions The aerodynamics of the flow and the mass transfer inside the furnace are extremely complex. Altitude creates an additional constraint which must be taken into account. The combustion system design must be adjusted to accommodate the size and altitude of the boiler to be retro-fitted. CFD is an integral and critical part of BMA s engineering process when dealing with the interaction of so many complex physical phenomena. With so many operational requirements, CFD analyses are necessary in order to gain enough information about boiler operation under different conditions in order to ensure that the design meets all of the project s requirements. 63
2010 STAR European Conference: 22 & 23 March, London, UK
EMULATING THE DIRECT BLISTER FURNACE (DBF) PROCESS WITH COAL COMBUSTION CAPABILITIES IN STAR-CCM+ V4.06 joint development venture between Bateman & Aerotherm 2010 STAR European Conference: 22 & 23 March,
More informationA BASIC IMMERSION FIRETUBE FLOWNEX MODEL
A BASIC IMMERSION FIRETUBE FLOWNEX MODEL This case study demonstrates the implementation of a basic immersion firetube model in Flownex and presents natural draft and forced draft examples. OIL AND GAS
More informationPower-Cost Alternative De-NOx Solutions for Coal-Fired Power Plants
Power-Cost Alternative De-NOx Solutions for Coal-Fired Power Plants 12/21/2015 Power Engineering By Bin Xu, David Wilson, and Rob Broglio Traditionally, large coal-fired generating units have complied
More informationANSYS Combustion Analysis Solutions - Overview and Update
ANSYS Combustion Analysis Solutions - Overview and Update Gilles Eggenspieler ANSYS, Inc. 1 Agenda Overview of Combustion Analysis Solution Reduced Order Models Finite Rate Models Pollutant Models Examples
More informationUnderstanding Spray Technology to Optimize Sulfur Burning
Understanding Spray Technology to Optimize Sulfur Burning Presenters: Chuck Munro Dan Vidusek About Spraying Systems Co. 75 year nozzle engineering & manufacturing company Leader in spray technology Manufacturing
More informationCFD MODELING FOR DESIGN OF NOX CONTROL SYSTEMS IN TWO UTILITY BOILERS
CFD MODELING FOR DESIGN OF NOX CONTROL SYSTEMS IN TWO UTILITY BOILERS James Valentine, Marc Cremer, and Kevin Davis Reaction Engineering International J. J. Letcatvits American Electric Power Scott Vierstra
More informationPrediction of Pollutant Emissions from Industrial Furnaces Using Large Eddy Simulation
Paper # B03 Topic: Turbulent Flames 5 th US Combustion Meeting Organized by the Western States Section of the Combustion Institute and Hosted by the University of California at San Diego March 25-28, 2007.
More informationThe effect of hydrogen containing fuel blends upon flashback in swirl burners. Nick Syred Cardiff School of Engineering Wales, U.K.
The effect of hydrogen containing fuel blends upon flashback in swirl burners. Nick Syred Cardiff School of Engineering Wales, U.K. Objectives Investigate flashback behaviour in swirl combustors representative
More informationIFRF Combustion Journal Article Number , June 2000 ISSN X
IFRF Combustion Journal Article Number 200005, June 2000 ISSN 1562-479X SCALING OF LOW NO X FLAMES OF NATURAL GAS S. Orsino and R. Weber Corresponding Author: Stefano Orsino IFRF Research Station B.V.
More informationAnalysis of the corrosion test process for heat exchangers in corrosion test chambers by CFD simulation
Analysis of the corrosion test process for heat exchangers in corrosion test chambers by CFD simulation STAR Global Conference, Wien, March 17-19, 2014 R. Stauch, F. Brändle, M. Pfitzer, W. Kühnel MAHLE
More informationNumerical Modelling of Coal Combustion Processes in the Vortex Furnace with Dual-Port Loading
Energy and Power Engineering, 2013, 5, 306-310 doi:10.4236/epe.2013.54b060 Published Online July 2013 (http://www.scirp.org/journal/epe) Numerical Modelling of Coal Combustion Processes in the Vortex Furnace
More information40-Ton Articulated Truck Cooling System Modelling Using STAR-CCM+
40-Ton Articulated Truck Cooling System Modelling Using STAR-CCM+ Gary Yu, Martin Timmins and Mario Ciaffarafa DENSO Marston Ltd, Bradford, BD17 7JR, UK DENSO Marston Founded in 1904 Acquired by DENSO
More informationCECEBE Technologies Inc.
98.2.8 Improving Furnace-Boiler System in Sulfuric Acid Plants Dr. Gordon M. Cameron and Dr. Dahya Bhaga CECEBE Technologies Inc. 4 Wellesbourne Crescent Toronto, Ontario Canada, M2H 1Y7 Tel: (416) 490-9840
More informationPAPER-I (Conventional)
1. a. PAPER-I (Conventional) 10 kg of pure ice at 10 ºC is separated from 6 kg of pure water at +10 O C in an adiabatic chamber using a thin adiabatic membrane. Upon rupture of the membrane, ice and water
More informationRetrofit of Rodenhuize 4 power station: The Max Green and Cold Back-up-projects
Retrofit of Rodenhuize 4 power station: The Max Green and Cold Back-up-projects Dr. Stefan Hamel, Babcock Borsig Steinmüller GmbH Dr. Christian Storm, Babcock Borsig Steinmüller GmBH Peter Goorden, Project
More informationSimulation of Low-Btu Syngas Combustion in Trapped Vortex Combustor
Simulation of Low-Btu Syngas Combustion in Trapped Vortex Combustor K. Zbeeb and C. Ghenai 1 Ocean and Mechanical Engineering Department College of Engineering and Computer Outline Project Goal and Objectives
More informationSteam Generation Solutions
Steam Generation Solutions Proven Steam Generation Solutions from John Zink Hamworthy Combustion. For more than a century, the Coen and Hamworthy Combustion brands have stood for the most advanced science
More informationTheory Comparison between Propane and Methane Combustion inside the Furnace
International Journal of Current Engineering and Technology E-ISSN 2277 4106, P-ISSN 2347 5161 2015 INPRESSCO, All Rights Reserved Available at http://inpressco.com/category/ijcet Research Article Theory
More informationFLAME AERODYNAMICS COMBUSTION AND FUELS
FLAME AERODYNAMICS IMPORTANCE OF AERODYNAMICS IN COMBUSTION Fuel Heat Combustion chamber, furnace Flue gas Air Heat Flow reactor Oxidizer: Fuel: Flue gas: MEDIA - air: primary, secondary sometimes tetriary
More informationDesign of a Small Scale CFB Boiler Combustion Chamber for Laboratory Purposes
International Journal of Emerging Engineering Research and Technology Volume 3, Issue 9, September, 2015, PP 1-7 ISSN 2349-4395 (Print) & ISSN 2349-4409 (Online) Design of a Small Scale CFB Boiler Combustion
More informationUnderstand boiler performance characteristics. Use these suggestions when buying, designing or optimizing steam generators
Understand boiler performance characteristics Use these suggestions when buying, designing or optimizing steam generators V Ganapathy, ABCO Industries, Abilene, An understanding of the major differences
More informationNumerical Investigation of the Flow Dynamics of a Supersonic Fluid Ejector
Proceedings of the International Conference on Heat Transfer and Fluid Flow Prague, Czech Republic, August 11-12, 2014 Paper No. 171 Numerical Investigation of the Flow Dynamics of a Supersonic Fluid Ejector
More informationSimulation of Flameless Combustion of Natural Gas in a Laboratory Scale Furnace
Turkish J. Eng. Env. Sci. 30 (2006), 135 143. c TÜBİTAK Simulation of Flameless Combustion of Natural Gas in a Laboratory Scale Furnace Sébastien MURER, Barbara PESENTI and Paul LYBAERT Thermal Engineering
More informationOxygen-Enriched Combustion of a Powder River Basin Black Thunder Coal for NOx Reduction In a Cyclone Furnace
Technical Paper BR-1825 Oxygen-Enriched Combustion of a Powder River Basin Black Thunder Coal for NOx Reduction In a Cyclone Furnace Author: H. Sarv Z. Chen A.N. Sayre G.J. Maringo Babcock & Wilcox Power
More informationDesign and distribution of air nozzles in the biomass boiler assembly
TRANSACTIONS OF THE INSTITUTE OF FLUID-FLOW MACHINERY No. 125, 2013, 13 28 KAROL RONEWICZ, TOMASZ TURZYŃSKI, DARIUSZ KARDAŚ Design and distribution of air nozzles in the biomass boiler assembly The Szewalski
More informationOptimising design of secondary combustion chambers using CFD
17 th European Symposium on Computer Aided Process Engineering ESCAPE17 V. Plesu and P.S. Agachi (Editors) 2007 Elsevier B.V. All rights reserved. 1 Optimising design of secondary combustion chambers using
More informationNumerical Modeling of Urea Injection and NO Emission in a Stoker Boiler
Paper # 070CO-0196 Topic: Coal and Biomass Combustion and Gasification 8 th U. S. National Combustion Meeting Organized by the Western States Section of the Combustion Institute and hosted by the University
More informationPERFORMANCE BASED EVALUATION OF FIRE SCENARIOS USING FLUENT
PERFORMANCE BASED EVALUATION OF FIRE SCENARIOS USING FLUENT Shyam Dayanandan, Dan Chong Computational Engineering Solutions LLP E-mail: shyam@ce-sol.com Website: www.ce-sol.com ABSTRACT The Fire and Engineering
More informationNumerical Investigation of the Combustion of Methane Air Mixture in Gas Turbine Can-Type Combustion Chamber
International Journal of Scientific & Engineering Research, Volume 3, Issue 10, October-2012 1 Numerical Investigation of the Combustion of Methane Air Mixture in Gas Turbine Can-Type Combustion Chamber
More informationNumerical Analysis on the CO-NO Formation Production near Burner Throat in Swirling Flow Combustion System
Jurnal Teknologi Full paper Numerical Analysis on the CO-NO Formation Production near Burner Throat in Swirling Flow Combustion System Mohamad Shaiful Ashrul Ishak a,b*, Mohammad Nazri Mohd Jaafar b a
More informationChallenges in Designing Fuel-Fired sco2 Heaters for Closed sco2 Brayton Cycle Power Plants
5th International Supercritical CO 2 Power Cycles Symposium March 29-31, 2016, San Antonio, Texas Challenges in Designing Fuel-Fired sco2 Heaters for Closed sco2 Brayton Cycle Power Plants David Thimsen
More informationPERFORMANCE ANALYSIS OF NATURAL DRAFT WET COOLING TOWER AT OPTIMIZED INJECTION HEIGHT
PERFORMANCE ANALYSIS OF NATURAL DRAFT WET COOLING TOWER AT OPTIMIZED INJECTION HEIGHT 1 ALOK SINGH, 2 SANJAY SONI, 3 R. S. RANA 1 Assistant Professor, 2 Associate Professor, 3 Mechanical Engineering Department
More informationPREDICTING THE EFFECTS OF BAGASSE DEPITHING OPERATIONS ON BOILER COMBUSTION PERFORMANCE A P MANN 1, I M O HARA 1.
PREDICTING THE EFFECTS OF BAGASSE DEPITHING OPERATIONS ON BOILER COMBUSTION PERFORMANCE By A P MANN 1, I M O HARA 1 1 Queensland University of Technology a.mann@qut.edu.au KEYWORDS: Bagasse, Boiler, CFD,
More informationDesign and evaluation of open volumetric air receiver for process heat applications
Design and evaluation of open volumetric air receiver for process heat applications P. Sharma, R. Sarma, D. Patidar, G. Singh, D. Saini, N. Yadav L. Chandra*, R. Shekhar, P. S. Ghoshdastidar Centre for
More informationCONTROL VOLUME ANALYSIS USING ENERGY. By Ertanto Vetra
CONTROL VOLUME ANALYSIS USING ENERGY 1 By Ertanto Vetra Outlines Mass Balance Energy Balance Steady State and Transient Analysis Applications 2 Conservation of mass Conservation of mass is one of the most
More informationModelling and Simulation of Thermodynamic Processes of Vertical Shaft Kiln in Magnesia Plant Using CFD Code Fluent
Proceedings of the 5th IASME/WSEAS Int. Conference on Heat Transfer, Thermal Engineering and Environment, Athens, Greece, August 25-27, 2007 85 Modelling and Simulation of Thermodynamic Processes of Vertical
More informationChapter 10 VAPOR AND COMBINED POWER CYCLES
Thermodynamics: An Engineering Approach, 6 th Edition Yunus A. Cengel, Michael A. Boles McGraw-Hill, 2008 Chapter 10 VAPOR AND COMBINED POWER CYCLES Copyright The McGraw-Hill Companies, Inc. Permission
More informationIndustrial Steam Generation Solutions
Industrial Steam Generation Solutions More Experience and More Expertise, For More Advanced Solutions. Since 1912, the Coen brand has been a global leader in clean-burning combustion technologies. Today,
More informationWelcome to. Kendal Power Station
Welcome to Kendal Power Station Technical Overview of the power station Scope General Overview Coal Handling Milling Plant Boiler Plant Turbine Train Steam Flow Path Ash Handling Generator HV Yard Cooling
More informationflow work, p. 173 energy rate balance, p. 174 nozzle, p. 177 diffuser, p. 177 turbine, p. 180 compressor, p. 184 (4.4b) p. 166
0 Chapter 4 Control Volume Analysis Using Energy The use of mass and energy balances for control volumes at steady state is illustrated for nozzles and diffusers, turbines, compressors and pumps, heat
More informationTananop Piemsinlapakunchon, and Manosh C. Paul
Proceedings of the World Congress on Engineering 2017 Vol II, July 5-7, 2017, London, U.K. Tananop Piemsinlapakunchon, and Manosh C. Paul , July 5-7, 2017, London, U.K. is 0.8 cm above the air inlet. This
More informationUSE OF CFD MODELING IN DESIGNING ADVANCED NO X CONTROL TECHNOLOGY FOR UTILITY BOILERS. Guisu Liu 1, Baiyun Gong 1, Brian Higgins 1, Muhammad Sami 2
The 37 th International Technical Conference on Clean Coal & Fuel Systems, Clearwater, Florida, USA June 3-7, 2012 USE OF CFD MODELING IN DESIGNING ADVANCED NO X CONTROL TECHNOLOGY FOR UTILITY BOILERS
More informationExperimental Investigation to Improve Flame Intensity in 250MW Tangentially Firing Furnace
Experimental Investigation to Improve Flame Intensity in 250MW Tangentially Firing Furnace Syed Mujtaba Umair 1, P.T.Borlepwar 2 1 PG Student, Mechanical engineering Department, Maharashtra Institute of
More informationCOMBUSTION PROCESS ANALYSIS IN BOILER OP-650K BASED ON ACOUSTIC GAS TEMPERATURE MEASURING SYSTEM
3 rd International Conference on Contemporary Problems of Thermal Engineering CPOTE 2012, 18-20 September 2012, Gliwice, Poland Institute of Thermal Technology COMBUSTION PROCESS ANALYSIS IN BOILER OP-650K
More informationCFD BASED PROCESS MODELLING OF A ROTARY FURNACE FOR ALUMINIUM SCRAP MELTING
Fourth International Conference on CFD in the Oil and Gas, Metallurgical & Process Industries SINTEF / NTNU Trondheim, Norway 6-8 June 2005 CFD BASED PROCESS MODELLING OF A ROTARY FURNACE FOR ALUMINIUM
More informationNUMERICAL SIMULATION RESEARCH ON 600MW BOILER WITH DIFFERENT SINGLE BURNER HEAT POWER
NUMERICAL SIMULATION RESEARCH ON 600MW BOILER WITH DIFFERENT SINGLE BURNER HEAT POWER Qulan Zhou Department of Thermal Engineering Xi an Jiaotong University Contents 1 2 Introduction Modeling and methods
More informationQuenching steels with gas jet arrays
Quenching steels with gas jet arrays PAUL F STRATTON ANDREW P RICHARDSON BOC Rother Valley Way, Holbrook, Sheffield UNITED KINGDOM Paul.stratton@boc.com http://www.catweb.boc.com Abstract: - Single components
More informationENERGY EFFICIENCY AND EMISSION REDUCTION OF TPM, PM 2.5, AND SO 2 FROM NATURAL GAS AND FUEL OIL FIRED BOILER EXHAUSTS
ENERGY EFFICIENCY AND EMISSION REDUCTION OF TPM, PM 2.5, AND SO 2 FROM NATURAL GAS AND FUEL OIL FIRED BOILER EXHAUSTS Robert W. Triebe, M.A.Sc., P.Eng. CTO, Thermal Energy International Inc. Robert A.
More informationCFD analysis of double-chambered crematories using biomass producer gas as a fuel source
CFD analysis of double-chambered crematories using biomass producer gas as a fuel source Yaowateera Achawangkul 1, Naoki Maruyama 1, Chatchawan Chaichana 2 Masafumi Hirota 1, Akira Nishimura 1, Pimpawat
More informationLiquid-Solid Phase Change Modeling Using Fluent. Anirudh and Joseph Lam 2002 Fluent Users Group Meeting
Liquid-Solid Phase Change Modeling Using Fluent Anirudh and Joseph Lam 2002 Fluent Users Group Meeting Solidification Model FLUENT can be used to solve fluid flow problems involving both solidification
More informationFundamentals of NO X Control for Coal-Fired Power Plants
Fundamentals of NO X Control for Coal-Fired Power Plants CastleLight Energy Corp Re-Engineering Coal-Fired Power Boilers for Improved Efficiency, Low Pollutant Emissions and Reduced Operating Cost By Keith
More informationSHRI RAMSWAROOP MEMORIAL COLLEGE OF ENGG. & MANAGEMENT B.Tech. [SEM IV (ME-41, 42,43 & 44)] QUIZ TEST-1 (Session: )
QUIZ TEST-1 Q.1. In a stage of an impulse turbine provided with a single row wheel, the mean diameter of the blade ring is 80cm and the speed of the rotation is 3000rpm. The steam issues from the nozzle
More informationFundamental oxy-fuel combustion research carried out within the ENCAP project
Oxy-fuel workshop, Cottbus, 29-3 th November 25 Fundamental oxy-fuel combustion research carried out within the ENCAP project KLAS ANDERSSON Department of Energy and Environment, Chalmers University of
More informationPerformance Analysis for Natural Draught Cooling Tower & Chimney through Numerical Simulation
Performance Analysis for Natural Draught Cooling Tower & Chimney through Numerical Simulation Kanteyya A 1, Kiran Kumar Rokhade 2 Assistant Professor, Department of Mechanical Engineering, HKESSLN College
More informationME 239: Rocket Propulsion. Real Nozzles. J. M. Meyers, PhD
ME 239: Rocket Propulsion Real Nozzles J. M. Meyers, PhD 1 Most Typical Real Nozzle Effects 1) Divergence of the flow 2) Low nozzle contraction ratios ( / ) 3) Boundary Layer Flow 4) Multiphase Flow 5)
More informationTHE STUDY OF THE BAKING OVENS BY COMPUTER SIMULATION
DOI: 10.2478/aucft-2013-0018 THE STUDY OF THE BAKING OVENS BY COMPUTER SIMULATION short communcation Igor LITOVCHENKO 1 National University of Food Technologies, Kiev, Ukraine Abstract. Configuring ovens
More informationComparison Between PIV Measurements and CFD Simulation on a Model of GT Annular Burner
Comparison Between PIV Measurements and CFD Simulation on a Model of GT Annular Burner D. Giordano, S. Giammartini, M. Rufoloni, G. Calchetti, F. Manfredi, E. Giacomazzi ENEA - C. R. Casaccia Sec. ENE-IMP
More informationA SUMMARY OF EXPERIENCES RELATED TO COMBUSTION OPTIMIZATION STEAG WORKSHOP=COMBUSTION OPTIMIZATION
A SUMMARY OF EXPERIENCES RELATED TO COMBUSTION OPTIMIZATION STEAG WORKSHOP=COMBUSTION OPTIMIZATION 19.09.2013-20.09.2013 Optimizing combustion in pulverized Coal fired Boilers Optimizing combustion in
More informationME ENGINEERING THERMODYNAMICS UNIT III QUESTION BANK SVCET
1. A vessel of volume 0.04m 3 contains a mixture of saturated water and steam at a temperature of 250 0 C. The mass of the liquid present is 9 kg. Find the pressure, mass, specific volume, enthalpy, entropy
More informationDownsizing a Claus Sulfur Recovery Unit
INFRASTRUCTURE MINING & METALS NUCLEAR, SECURITY & ENVIRONMENTAL Downsizing a Claus Sulfur Recovery Unit OIL, GAS & CHEMICALS By Charles L. Kimtantas and Martin A. Taylor ckimtant@bechtel.com & mataylo1@bechtel.com
More informationGreen FSRU for the future
Green FSRU for the future Presentation at GREEN4SEA Athens April 6 th 2016 Dr. John Kokarakis Vice President Technology & Business Development, Africa, S. Europe Hellenic, Black Sea & Middle East Zone
More informationCombustion in anode baking furnaces: Comparison of two modeling approaches to predict variability
338 Proceedings of Combustion Institute Canadian Section Spring Technical Meeting Université Laval May 13-16, 2013 Combustion in anode baking furnaces: Comparison of two modeling approaches to predict
More informationEFFECTS OF LoD AND PoD IN COMBINED-HOLE FILM COOLING
EFFECTS OF LoD AND PoD IN COMBINED-HOLE FILM COOLING Haswira Hassan and Kamil Abdullah Center for Energy and Industrial Environmental Studies, Faculty of Mechanical and Manufacturing Engineering, Universiti
More informationHoneywell UOP Callidus Solutions
Alex Norris Sales Manager, EMEA Callidus Technologies May 15, 2017 May 17, 2017 Honeywell UOP Callidus Solutions Efficient and Clean Combustion 2017 Honeywell Oil & Gas Technologies Symposium Cairo, Egypt
More informationOptimization of Air Preheater Design for the Enhancement of Heat Transfer Coefficient
Optimization of Air Preheater Design for the Enhancement of Heat Transfer Coefficient P. N. Sapkal 1, P. R. Baviskar 2, M. J. Sable 3 & P. A. Makasare 4 Department of Mechanical Engineering, Rajarshi Shahu
More informationTHE FORMATION OF CO-NO IN A CONFINED CAN COMBUSTOR DUE TO SWIRLING FLOW
THE FORMATION OF CO-NO IN A CONFINED CAN COMBUSTOR DUE TO SWIRLING FLOW M. N. Mohd Jaafar 1 & M. S. A. Ishak 2 1 Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81300 UTM Johor Bahru,
More informationComputer Models For Fire and Smoke
Computer Models For Fire and Smoke Model Name: KAMELEON FIREEX KFX Version: KAMELEON FIREEX KFX 2010 Date: August 6 th, 2013 Classification: Very Short Description: Field model KAMELEON FIREEX KFX is an
More informationEvaluation of new combustion technologies for CO 2 and NO x reduction in steel industries
Evaluation of new combustion technologies for CO 2 and NO x reduction in steel industries W. Blasiak, K. Narayanan & W. Yang Division of Energy and Furnace Technology, Royal Institute of Technology (KTH),
More informationModelling Urea Distributions in SCR Exhaust Aftertreatment Systems. A Simple Approach.
Modelling Urea Distributions in SCR Exhaust Aftertreatment Systems. A Simple Approach. Dr. Joachim Braun, Dr. Rainer Lehnen J. Eberspächer GmbH & Co. KG Germany ABSTRACT The upcoming emission standards
More informationNumerical Prediction of Turbulent Combustion Flows for 1700 C Class Gas Turbine Combustor
Chapter 3 Epoch Making Simulation Numerical Prediction of Turbulent Combustion Flows for 1700 C Class Gas Turbine Combustor Project Representative Nobuyuki Oshima Author Nobuyuki Oshima Division of Mechanical
More informationESTIMATION OF THE GAS EXHAUST RATE REQUIRED ON AN ALUMINIUM REDUCTION CELL DURING START-UP USING TASCflow3D
ESTIMATION OF THE GAS EXHAUST RATE REQUIRED ON AN ALUMINIUM REDUCTION CELL DURING START-UP USING TASCflow3D Marc Dupuis (GéniSim Eng.) Edgar Dernedde (Kroll International) ABSTRACT During the start-up
More informationHeat Storage Performance of a Honeycomb Ceramic Monolith
Send Orders for Reprints to reprints@benthamscience.ae The Open Fuels & Energy Science Journal, 2014, 7, 113-120 113 Heat Storage Performance of a Honeycomb Ceramic Monolith Xiaoni Qi * and Yongqi Liu
More informationnatcom burner solutions Advanced burner technology for stringent emissions requirements
natcom burner solutions Advanced burner technology for stringent emissions requirements The benchmark of the industry Our Technological Edge HyperMix TM technology for ultra-low NOx and CO with compact
More informationYoung Dong Unit 1 Oxyfuel Feasibility Study and FEED
Available online at www.sciencedirect.com Energy Procedia 37 (2013 ) 1357 1364 GHGT-11 Young Dong Unit 1 Oxyfuel Feasibility Study and FEED K Kuczynski a*, M Kaliyaperumal a, G Hesselmann a, H P Kim b
More informationROTARY KILN COMBUSTION SYSTEMS
ROTARY KILN COMBUSTION SYSTEMS Rotary Kiln Combustion Systems from Coen Company Since 1912 Coen Company has specialized in the design, manufacture, servicing and maintenance of burner equipment and combustion
More informationAnalysis of Flue Gas Flow Behavior in Economiser Duct Using Cfd
Analysis of Flue Gas Flow Behavior in Economiser Duct Using Cfd Anand Kumar S Malipatil 1, Shivaraj 2 Department of Thermal Power Engineering, VTU-Gulbarga Abstract-- Energy saving and efficiency are the
More informationCoal Pipe Coal Flow Distribution Control for Coal Pulverizer Systems
Technical Publication Coal Pipe Coal Flow Distribution Control for Coal Pulverizer Systems by John Rath Engineer Pulverizer Engineering RILEY POWER INC. Jilin Zhang Engineer Fuel Equipment Design RILEY
More informationEffect of Fuels on Gas Turbine Can-Type Combustor using CFD Code
Effect of Fuels on Gas Turbine Can-Type Combustor using CFD Code Guessab A., Aris A. Benabdallah T. and Chami N. Abstract This paper describes reacting flow analysis of a gas turbine combustion system.
More informationTailor-made SNCR to Meet Future Emission Standards for Power Boilers
Tailor-made SNCR to Meet Future Emission Standards for Power Boilers POWER-GEN Europe Amsterdam (June 9-11, 2015) Mehldau & Steinfath Umwelttechnik GmbH, Alfredstr. 279, 45133 Essen www.ms-umwelt.de POWER-GEN
More informationCFD MODELLING OF PULVERIZED COAL COMBUSTION IN A ROTARY LIME KILN
Seventh International Conference on CFD in the Minerals and Process Industries CSIRO, Melbourne, Australia 9-11 December 2009 CFD MODELLING OF PULVERIZED COAL COMBUSTION IN A ROTARY LIME KILN James E.
More informationmetals temperature limits.
9:41 Page 39 Richard F. Storm, Stephen K. Storm and Sammy Tuzenew, Storm Technologies, Inc., US, consider how to conduct a comprehensive diagnostic test on a pulverised coal-fuelled boiler. T Tuning of
More informationPreparatory study for Steam Boilers Ecodesign
www.pwc.com Preparatory study for Steam Boilers Ecodesign Stakeholder Meeting Brussels, Task 1: Scope PwC - ICCS - Fraunhofer ISI Slide 2 Tasks structure Task 1: Scope Task 2: Task 3: Task 4: Markets Users
More informationKnowledge Objectives (2 of 2) Skills Objectives. Introduction (1 of 2) Introduction (2 of 2) 12/20/2013
Explosions Knowledge Objectives (1 of 2) Describe the types of explosions. Discuss the characteristics of explosion damage. Discuss the effects of explosions and the factors that control them. Knowledge
More informationHeat exchangers and thermal energy storage concepts for the off-gas heat of steelmaking devices
Journal of Physics: Conference Series Heat exchangers and thermal energy storage concepts for the off-gas heat of steelmaking devices To cite this article: T Steinparzer et al 2012 J. Phys.: Conf. Ser.
More informationNUMERICAL MODELLING OF BROWN COAL COMBUSTION IN A TANGENTIALLY-FIRED FURNACE
Seventh International Conference on CFD in the Minerals and Process Industries CSIRO, Melbourne, Australia 9-11 December 009 NUMERICAL MODELLING OF BROWN COAL COMBUSTION IN A TANGENTIALLY-FIRED FURNACE
More informationRegenerative Firing vs. Oxy Fuel Firing: An Applications Approach Steven J. O Connor Senior Applications Engineer, Bloom Engineering Company
Regenerative Firing vs. Oxy Fuel Firing: An Applications Approach Steven J. O Connor Senior Applications Engineer, Bloom Engineering Company KEY WORDS Combustion Oxy Fuel Regenerative Burners Reheat Furnace
More informationChapter 8. Vapor Power Systems
Chapter 8 Vapor Power Systems Introducing Power Generation To meet our national power needs there are challenges related to Declining economically recoverable supplies of nonrenewable energy resources.
More informationSelective Use of Oxygen and In- Furnace Combustion Techniques for NO x Reduction in Coal Burning Cyclone TM Boilers
Technical Paper BR-1809 Selective Use of Oxygen and In- Furnace Combustion Techniques for NO x Reduction in Coal Burning Cyclone TM Boilers Authors: H. Sarv A.N. Sayre G.J. Maringo Babcock & Wilcox Power
More informationPerformance and NOx Emissions of Refinery Fired Heaters Retrofitted to Hydrogen Combustion
Available online at www.sciencedirect.com Energy Procedia 37 (2013 ) 7214 7220 GHGT-11 Performance and NOx Emissions of Refinery Fired Heaters Retrofitted to Hydrogen Combustion M. Ditaranto*, R. Anantharaman,
More informationFUEL- OXYDANT FLEXIBLE COMBUSTION
FUEL- OXYDANT FLEXIBLE COMBUSTION WITH FLAMELESS OXIDATION A. Milani, J.G. Wünning WS GmbH Recent and expected measures for reducing CO 2 released from combustion equipment affect the composition of both
More informationOptimization of embedded Heat Exchanger in a flat plate Integrated Collector Storage Solar Water Heater (ICSSWH), with indirect heat withdrawal.
World Renewable Energy Congress (WRECX) Editor A. Sayigh 2008 WREC. All rights reserved. 1815 Optimization of embedded Heat Exchanger in a flat plate Integrated Collector Storage Solar Water Heater (ICSSWH),
More informationIn The Name OF God Hampa E ner ner Ener y gy Engineering EEngineering & & Design Company Design Compan
In The Name OF God Hampa Energy Engineering & Design Company 1 Introduction Ammonia plants Methanol plants Hydrogen Plants Other plants 2 A Brief historical Review Greater capacity 3300 mtpd 20 rows with
More informationReduction Systems and Equipment at Moss Landing Power Plant
B&W s NO x Reduction Systems and Equipment at Moss Landing Power Plant Presented to: ICAC NO x Forum March 23-24, 2000 Washington D.C., U.S.A. Bill Becker Don Tonn Babcock & Wilcox Barberton, Ohio, U.S.A.
More informationImpact of Selective Oxygen Injection on NO, LOI, and Flame Luminosity in a Fine Particle, Swirl-Stabilized Wood Flame
Paper # 7CO-63 Topic: Coal and Biomass Combustion and Gasification 8 th U. S. National Combustion Meeting Organized by the Western States Section of the Combustion Institute and hosted by the University
More informationSimulation of Binary Mixture Droplet Evaporation using VOF Methods
Peter Keller and Christian Hasse Department of Energy Process Engineering and Chemical Engineering TU Bergakademie Freiberg Simulation of Binary Mixture using VOF Methods June 14, 2011 6 th OpenFOAM R
More informationCFD Analysis of Pelton Runner
International Journal of Scientific and Research Publications, Volume 4, Issue 8, August 2014 1 CFD Analysis of Pelton Runner Amod Panthee *, Hari Prasad Neopane **, Bhola Thapa ** * Turbine Testing Lab,
More informationFSI ANALYSIS OF TRAILING EDGE REGION COOLING IN HP STAGE TURBINE BLADE
FSI ANALYSIS OF TRAILING EDGE REGION COOLING IN HP STAGE TURBINE BLADE Harishkumar Kamat Chandrakant R Kini Engineering,Manipal Institute of Technology, Engineering,Manipal Institute of Technology, N Yagnesh
More informationModelling of the off-gas exit temperature and slag foam depth. of an Electric Arc Furnace
odelling of the off-gas exit temperature and slag foam depth of an Electric Arc Furnace Daniël Jacobus Oosthuizen ), Johannes Henning Viljoen ), Ian Keith Craig ), Petrus Christiaan Pistorius 2) ) Department
More informationPLUME ANALYSIS AND CFD MODELING FOR EFFECTIVE EAF MELTSHOP ENVIRONMENT CONTROL
PLUME ANALYSIS AND CFD MODELING FOR EFFECTIVE EAF MELTSHOP ENVIRONMENT CONTROL BY NILS BECHT *, PAYKAN SAFE ** AND MATT RUSSELL *** SYNOPSIS: Process gas emissions from Electric Arc Furnace (EAF)-based
More informationAn overview of CFD applications in flow assurance From well head to the platform. Simon Lo
An overview of CFD applications in flow assurance From well head to the platform Simon Lo Contents From well head to the platform Heat transfer in Christmas tree Multiphase flow in long pipe Severe slugging
More information