Progressing of high efficient and clean coal technologies

Transcription

1 Progressing of high efficient and clean coal technologies October 1, 2015 Hidetoshi Aiki Director Boiler Business Strategy Planning Dept. Boiler Products Headquarters Mitsubishi Hitachi Power Systems, LTD

2 Contents 1. Introduction of Mitsubishi Hitachi Power Systems 2. Supercritical / Ultra-Supercritical Power Plant 3. Advanced Clean Coal Technology 1

3 1. Introduction of Mitsubishi Hitachi Power Systems 2

4 Mitsubishi Hitachi Power Systems, Ltd (MHPS) Name Head Office MITSUBISHI HITACHI POWER SYSTEMS, LTD. Yokohama, Kanagawa, JAPAN Representatives Koji Tanaka (Chairman of the Board) Takato Nishizawa (President and CEO) Capital 100 Billion JPY Effective Date February 1, 2014 Integration in the Thermal Power Generation Systems Field Employees 23,000 (incl. 7,600 outside Japan) 3

5 Global Network of MHPS MHPS Europe (UK) MHPS Europe (Germany) MHPS Dongfang JV DHME (Dalian) MHPS Canada MHPS America Energy and Environment MHI Kiev Office (Ukraine) Yokohama Head Office MHPS Philippines MHPS Africa (RSA) L&T MHPS JV MHPS Technical Services MHPS Americas MHPS has 54 companies in 24 countries. CBC 4

6 MHPS s Business Field Products & Services Gas Turbine Combined Cycle (GTCC) Power Plants Boilers Integrated coal Gasification Combined Cycle (IGCC) Power Plants Environmental Plants SCR Systems, FGD Systems Gas Turbines Generators Boiler & Turbine Generation Plants Geothermal Power Plants Steam Turbines Power Generating Plant Peripheral Equipment SCR Systems Plant Control System Fans Fuel Cells (SOFC) 5

7 MHPS Activities in Ukraine Zmiivska (Centroenergo) 1 x 300MW Boiler rehabilitation Ukraine Regenza Dneprodzerzhinsk GTCC 150MW - M701S(DA) x 1 (100MW) - ST x 1 (50MW) OJAC Alchevsk and Steel Works Alchevsk Iron and Steel Works GTCC 450MW No.1 GT M701S(DA) x 1 (100MW), ST x 1 (50MW) No.2 GT M701S(DA) x 1 (100MW), ST x 1 (50MW) No.3 GT M701S(DA) x 1 (100MW), ST x 1 (50MW) 6

8 2. Supercritical/Ultra-Supercritical Power Plant 7

9 Average Gross Thermal Efficiency (LHV, %) Comparison of Coal Fired Plant Thermal Efficiency by Individual Countries 石炭焚火力発電プラントの比較 ( 米国 vs. 日本 ) Source:; International comparison of fossil power efficiency and CO2 intensity - Update 2013, Ecofys 8

10 Coal fired SC(Supercritical) Steam Temp. ( o C) USC(Ultra-Supercritical) Gross Plant Efficiency (LHV%) Efficiency vs Steam Condition for Coal Fired Plant History of steam condition and thermal efficiency in Japanese thermal power plant 700 Gross Plant Efficiency Steam Temperature 620 C 600 C 610 C C 566 C 593 C A-USC Note: History of plant efficiency and steam temp. includes oil and/or gas fired power plant 9 Year Higher steam temperature and pressure improve thermal plant efficiency In other words, SC/USC technology provides economical power production, fuel energy saving, lower carbon emission and environment-friendly

11 MHPS Various Coal Experience MHPS can provide various power plants best suited for various kinds of coal based on abundant experiences. Anthracite Ukrainian Anthracite Bituminous Sub-Bituminous Lignite 10

12 Design Considerations for Coal Fired Boiler In initial design stage, many points are considered, such as operability, construction and anti-slagging. Sufficient distance between SH panels For easy construction and anti-slagging Suitable furnace sizing Against slagging characteristics Optimized SH/RH arrangement Based on static and dynamic simulation High performance combustion system Low NOx burner and vertical type pulverizer Gas biasing damper For RH temperature control 11

13 Air Quality Control System for Coal Fired Plant Harmful NO is decomposed into harmless N2 and H2O by catalytic action catalytic action 4NO + 4NH 3 + O 2 4N 2 + 6H 2 O Boiler 360 SCR AH GGH ESP Harmful SO2 is recovered as harmless gypsum(caso4) SO 2 + CaCO 3 + 2H 2 O CaSO 4 2H 2 O + CO 2 FG D 50 GG H FGD Stack 2 次空気 Low NOx Combustion SCR GGH Heat Extractor (GGH: Gas to Gas Heater) ESP* * ESP will be supplied by MHI-Mechatronics Systems or Hitachi Plant Construction One-stop AQCS solution by MHPS GGH Re Heater World lowest level emission (SOx, NOx, PM) can be achieved by applying the integrated AQCS system 12

14 Coal-Fired SC/USC Plant in overseas German: 14units China: 63units (by MHPS / Licensee) Japan: 26units Total: 160units MHPS : 110 units Others: 50 units (Chinese licensee) Boxberg R Henung Yuhuan #1 to #4 Misumi #1 Netherlands: 2units Italy: 3units Korea: 4 units USA: 4units Poland: 2unit Canada: 2units ENEL Torrevaldaliga Nord #2-4 Greece: 1unit Enea, Kozienice Taiwan: 8units Taiwan Power Co., Ltd. LIN KOU #1-3 Malaysia: 1unit Midamerican Energy, Walter Scott Jr. Energy Center #4 South Africa: 12units India: 15units (by L&T-MHPS Boilers Pvt. Ltd. as JV) Indonesia: 1unit Australia: 1unit Mexico: 1uinit Jaypee Nigrie #1,2 Mahagenco Koradi #8,9,10 Rajpura #1,2 Paiton III Expansion CS Energy Kogan Creek #1 CFE Pacifico #1 13

15 Latest USC Plant Tokyo Electric Power Co., Ltd Hirono #6 Germany Project Boxberg R Output : 600 MW Main Steam Flow : 1,770 t/h Main Steam : 600 o C / 24.5 MPag Reheat Steam : 600 o C Commercial Operation : 2013/12 Fuel : Bituminous Coal Output : 670 MW Main Steam Flow : 1,760 t/h Main Steam : 600 o C / 29.3 Mpag Reheat Steam : 610 o C Commercial Operation : 2012/10 Fuel : German Lignite Coal 14

16 Latest SC Plant South Africa Project Medupi, Kusile SC technology is applied to South African Project 2 projects, total 12 boilers are under construction and commissioning Medupi Output : Main Steam Flow : Main Steam : Reheat Steam : Fuel : 6 x 800MW 2,288 t/h 564 o C/ 25.7 MPag 572 o C Bituminous Coal Kusile Output : Main Steam Flow : Main Steam : Reheat Steam : Fuel : 6 x 800MW 2,288 t/h 564 o C/ 25.7 MPag 572 o C Bituminous Coal 15

17 MHPS Experience of Anthracite Firing Boiler China Qinbei #1,2 Anthracite firing boiler with conventional combustion system Output : 600MW x 2 Main Steam Flow : Main Steam : Reheat Steam : 1,900 t/h 566 o C/ 24.1 MPag 566 o C Commercial Operation : 2004/12, 2005/3 Fuel : Minimum Load Combustion System Chinese Anthracite (VM: 8~15%) 45% (Without Support Fuel) Opposed Firing (Direct Firing) NR Burner MPS Mill 16

18 Activities at Indian Market IPP L&T Rajpura 700MW x 2 LMB(L&T-MHPS Boilers Private Ltd.) NTPC /Tanda 660MW x 2 Rajasthan State Power Generation /Chhabra 660MW x 2 IPP Jaypee Nigrie 660MW x 2 LMTG(L&T MHPS Turbine Generators Private Ltd.) NTPC /Khargone 660MW x 2 Maharashtra State Power Generation /Koradi 660MW x 3 Madhya Pradesh Power Generation /Shree Singaji 660MW x 2 MHPS has contributed to Indian power generation CCT originated from Japan through the JV with Indian company, Larsen & Toubro, Ltd. 17

19 Global Activity with SC/USC Technology Indian Project Rajpura #1 Rajpura #1 was placed under commercial operation from Feb 1 st, 2014 This unit was constructed by joint venture established by MHPS and Indian local company Larsen & Toubro, Ltd. Fuel is Indian high ash content bituminous coal (ash content is 30%) Local staff performed engineering/manufacturing/construction/commissioning works under MHPS s instruction High efficiency and reliability of Japanese leading CCT were also proved in India Fuel Property Actual HHV (kcal/kg, A.R.) 4,560 Fuel Ratio (-) 1.20 Moisture (A.R. %) 11.8 Ash (A.R. %) 27.5 Project Schedule Output : 700MW Main Steam Flow : 2,322 t/h Main Steam : 565 o C / 24.1 MPag Reheat Steam : 593 o C Thermal efficiency : Approx. 4 ~ 5% better * months from LNTP to COD was achieved. *1: Relative value as compared with Sub-critical plant (16.7MPag, 538/538 o C) 18

20 3. Advanced Clean Coal Technology Integrated coal Gasification Combined Cycle 19

21 Outline of IGCC System What is IGCC? *Integrated coal Gasification Combined Cycle Higher efficiency through coal gasification process coupled with a combined cycle (CC) system. Reduce CO2 emission by high efficiency and prevent global warming Combined Power Generation (Combination of Brayton & Rankine Cycles) IGCC Projects in Japan (Demonstration and Commercial Plant) Coal Gasifier Steam Turbine ~ TEPCO Fukushima IGCC Project (2020~) Nakoso site, Hirono site Clean up Air Comp. Combustor ~ Air C T Gas Turbine HRSG Flue Gas Osaki CoolGen Corp. Osaki CoolGen Project (Demo ) Rendering Image Joban Joint Power Co.LTD Nakoso #10 (Demo , Commercial 2013-) 20

22 Nakoso 250MW IGCC Plant Nakoso 250MW IGCC Major Specification Output 250 MW (gross) Gasifier Gas Clean-Up Air-blown Dry Feed MDEA (Methyldiethanolamine) Gas Turbine M701DA GT (1 on 1) Plant Efficiency Project Schedule 42% (LHV, net) Operation Started Sep Commercial Operation July Nakoso 250MW IGCC Demonstration Plant achieved all the following targets. Excellent Performance Higher Reliability Fine Operability Fuel Flexibility (Highest Efficiency, Less Environmental impact) (World record of continuous operation 3,917hr) (Load change rate >3%/min) (Verified applicability for low-rank coal, 10 kinds coals) JSME* Medal for Technology (2013) Awarded Converted to the First Commercial IGCC Plant in Japan. (Total operating hours are approx. 30,000 hrs.) 2015 MITSUBISHI HITACHI POWER SYSTEMS, LTD. All Rights Reserved * Japan Society of Mechanical Engineering) 21

23 Commercial-scale IGCC Project Major Specification Output Gasifier Gas Clean-Up 540 MW (gross) 480 MW (net) Air-blown Dry Feed MDEA (Methyldiethanolamine) Gas Turbine M701F GT (1 on 1) High Efficiency by using state of the art Gas Turbine Lower CO2 emission intensity than the latest USC coal fired power plant. Fuel Flexibility for high moisture Low Rank Coal Highly Reliable system verified in Nakoso 250MW IGCC plant 2015 MITSUBISHI HITACHI POWER SYSTEMS, LTD. All Rights Reserved 22

24 MHPS s Policy for Clean Coal Technology MHPS shall be continuously developing Clean Coal Technology to improve plant efficiency and reduce CO 2 emissions. MHPS shall contribute to Environmental Conservation and CO 2 Emission Reduction to provide Japanese clean coal technology worldwide. 23

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