Advanced Burner Technology for Alternative Fuels. heatingdays 2013 Hamburg, 13/14 June 2013 Dr.-Ing. Norbert Schopf

Transcription

1 Advanced Burner Technology for Alternative Fuels heatingdays 2013 Hamburg, 13/14 June 2013 Dr.-Ing. Norbert Schopf

2 Family-owned Enterprise since st generation: Carl Saacke, the founder ( ) 2 nd generation: Dr. Herbert Saacke ( ) 3 rd generation: Hans-Herbert Saacke ( ) 4 th generation: Henning Saacke, Angelika Saacke-Lumper, Stefan Lumper (collective since 2005) SAACKE Group // Company Presentation 2009 // The Company // Family-owned Enterprise since 1931

3 SAACKE Companies, Branches and Partners Worldwide America Europe Asia Africa Australia SAACKE Group // Company Presentation 2009 // The Company // SAACKE Worldwide

4 Overview 1. Alternative Fuels Properties of example fuels Swirl burner systems 2. Burner Modification to reduce Fuel NOx Swirl burner with air staging Gaseous, liquid and pulverized fuels 3. Application Areas 4. Summary & Outlook 4

5 Alternative Fuels Properties of example fuels Fuel Heat value (MJ/m 3 or kg) Nitrogen content (ppm) Water content % by weight Ash content % by weight Lean gas 2-4 < 10 < 0,1 < 0,01 Gasification gas 4-6 < < 0,1 < 0,01 Molasses / vinasse 7-10 < Liquid residue < < 1 <1 Pulverized lignite < < 10 < 5 5

6 Alternative Fuels Challenge: Reduction/prevention of NOx formation in medium level of fuel nitrogen Solution: Simple structural burner modification Air staging for use in cooled furnaces Prevention of secondary measures (SNCR, SCR) 6

7 Swirl Burner System SSB burner Flow guide Stable, clean combustion without or with low quantities of support fuel 7

8 SSBGL 8

9 Low-Calorific Gases Blast Furnace Gas, Steel Mill, Bremen BFG combustion without support fuel: Burner capacity: 2 x 11 MW per boiler Heat value of furnace gas: MJ/m 3 Pressure of furnace gas: mbar N org < 10 ppm NO x < 30 mg/m 3 CO < 10 mg/m 3 Combustion system for BFG, lean gases and vents 9

10 Low-Calorific Liquids Molasses Combustion, Soya Plant, Brazil Molasses combustion: Heat value: 7-10 MJ/kg Water content: % Burner capacity: 2 x 26 MW O 2 approx. 4-6 % CO < 150 mg/m 3 NO X < 300 mg/m 3 Versatile firing system for molasses, natural gas, soya oil and animal fat Stable flame, little support fuel Solves environmental problems and produces heat 10

11 SSBGL-LCL 11

12 Swirl Burner with Air Staging Primary air Schematic diagram of the material flows Natural gas Lean gases / Vents Secondary air

13 Gasification Gas District Heating, Gasification Plant, Finland Water-tube boiler: Burner: 4 x SSB 200 Output per burner: 40 MW Fuels: Natural gas, Gasification Gas (400 C) LHV Gasif. Gas: MJ/Nm 3 Emission values : Natural gas: Gasification Gas CO: < 50 < 50 mg/nm³ NO X : < 200 < 500 mg/nm³ Expected value 300 mg/nm³

14 Liquid Residue Chemical Industry, France Solvent Waste water Natural gas Primary air Technical data Secondary air SSB 50 Solvent Mass-flow max. N org approx. Waste water Vent Gas Start-up fuel: 10 MW MJ/kg 1,450 kg/h 5000 ppm max. 500 kg/h max. 60m³/h Natural gas Schematic diagram of the material flows

15 Liquid Residue Chemical Industry, France

16 Lignite Paper Industry, Germany Natural gas Coal dust Primary air Secondary air Temperature distribution ( C), Longitudinal section

17 Lignite Paper Industry, Germany Caption? Technical data WTB: Burner capacity: Fuels: 22 t/h hot steam 48 bar, 400 C 19 MW Natural gas Pulverized lignite

18 Lignite Paper Industry, Germany Furnace keeping warm mode Furnace gas firing operation Furnace

19 Lignite Paper Industry, Germany Pulverized lignite NOx,CO [mg/m³,3%o2,en 676] Emissionswerte CO, NOx = f(lastwert) NOx-Emissionsw ert CO-Emissionsw ert Grenzw ert CO Grenzw ert NOx O2-Messw ert, trocken 11,0 10,0 9,0 8,0 7,0 6,0 5,0 4,0 O2, trocken [Vol.-%] On left: Emission values obtained NO X + CO depending on the output 50 3,0 Natural gas NOx,CO [mg/m³,3%o2,en 676] 0 2, Emissionswerte Lastwert CO, VMS NOx [Digit] = f(lastwert) NOx-Emissionswert CO-Emissionswert Grenzwert CO Grenzwert NOx O2-Messwert, trocken 7,0 6,0 5,0 4,0 3,0 2,0 1,0 O2, trocken [Vol.-%] 0 0, Lastwert VMS [Digit] Simulation: Carbon monoxide distribution (mol. %), Longitudinal section magnified

20 SSBG-D 20

21 Application Areas 1. Gases Vent gases (tank storage) Formalin gas (contains H2) CO gases (cat regeneration, production of carbon black) Blast Furnace Gas, Coke Oven Gas 2. Liquids Loaded waste water (phenol resin) Solvent mixtures Sugar Cane Vinasse, Soya Molasses 21

22 Application Areas 3. Pulverized Fuels Pet Coke Hard Coal Lignite (Brown Coal) Wooden Dust Waste Dust from Tobacco, Sugar Beat Chips, Rape.. 22

23 Summary 1. The SSB swirl burner has many application areas: With standard fuels for waste incineration plants and combustion chambers With muffle for low-calorific gases and liquids With staged air muffle to reduce fuel-no formation 2. The swirl burner is characterised by a very stable flame and its excellent mixing efficiency. 3. In combination with a staged air muffle NOx reduction rates over 50 % can be achieved for a mean nitrogen content. 4. This air staging is used for gaseous, liquid and pulverized fuels directly in cooled furnaces. 23

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