21
DEVELOPMENT OF A FLUIDIZED BED DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Jerzy TOMECZEK Department of Process Energy Department of Process Energy Silesian University of Technology Silesian University of Technology Presentation, Gliwice, 22 November 2005 Presentation, Gliwice, 22 November 2005

DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

Embed Size (px)

Citation preview

Page 1: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

DEVELOPMENT OF A FLUIDIZED BED DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGYCOAL GASIFICATION TECHNOLOGY

  

Jerzy TOMECZEKJerzy TOMECZEKDepartment of Process EnergyDepartment of Process Energy

Silesian University of TechnologySilesian University of Technology    

Presentation, Gliwice, 22 November 2005Presentation, Gliwice, 22 November 2005

Page 2: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

RESEARCH ACTIVITY

Clean Coal Technologies:·      Gasification,·      Combustion.Low Pollutants Emission Combustion:·      Mechanisms of NOx Formation,

·      NOx Abatement Technologies.

Heat and Mass Transfer in Furnaces:·      Mathematical Modelling,·      Semi-Isothermal Combustion Conditions,·      Fluidized Bed Structure Modelling,·      Prediction of Deposits in Boilers.

 

Page 3: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

INDUSTRIAL FLAME RESEARCH LABORATORY

Page 4: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

INDUSTRIAL FLAME RESEARCH LABORATORY

Page 5: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

HIGH TEMPERATURE FURNACE LABORATORY

Page 6: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

COAL GASIFICATION PILOT PLANT

Page 7: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

CONCEPT OF ELEKTRO-GAS PLANT

DEVOLATILIZER

GASIFICATION

CHAR

LIQUID HYDROCARBONS

FUEL GAS

COAL

ELECTRIC ENERGY

Page 8: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

RANGE OF PARAMETERS USED IN GASIFICATION EXPERIMENTS

Page 9: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

CHARACTERISTICS OF GASIFIED MATERIALS 

Page 10: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

FLUIDIZED BED GASIFIER

Page 11: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

D

D1

D D

1.3D1 1.3D1

1.5

m

1.5

m

2.0

m

D2 D2D2

D3 D3D3

Characteristic of tested variants of reactor geometry: D=100mm, D1=140 mm, D2=240 mm, D3=300 mm.

Page 12: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

LOWER GAS HEATING VALUE, MJ/m3

COAL/AIR RATIO kg/kg/ ,C am m

2/ 0H O am m Gas heating value as function of coal/air ratio for :

1- coal ● – A and ▲ - B, d=1.0-1.5 mm; 2- coal ○ – A and Δ - B, d=0.5-1.0mm;

3 - char ■ – C and □ - E.

Page 13: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

STEAM/AIR RATIO kg/kg2/ ,H O am m

LOWER GAS HEATING VALUE,MJ/m3

Gas heating value as function of steam/air ratio: 1- char Δ – C, □ - D and ■ – E, Tb=900oC;

2- coal ● – A and ▲ - B, d=1.0-1.5 mm, Tb=900oC.

Page 14: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

DECOMPOSED STEAM XH2O, %

STEAM/AIR RATIO kg/kg

Decomposed steam as function of steam/air ratio: 1- coal ○ – A and ● – B, char ■ – C and Δ – D for Tb=900oC;

2- coal for Tb=800oC by Tomeczek et al. (1983).

2/ ,H O am m

Page 15: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

LOWER GAS HEATING VALUE, MJ/m3

PARTICLE RESIDENCE TIME t, minGas heating value as function of bed residence time for air gasification and

Tb=900oC: 1- coal ● – A and ▲ - B, d=1.0-1.5 mm; 2- coal ○ – A and Δ - B, d=0.5-1.0mm;

3 - char ■ – C and □ - E, d=0.5-1.5mm.

Page 16: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

PARTICLE RESIDENCE TIME t, min

CARBON CONVERSION xc, %

Carbon conversion as function of particle residence time for Tb=900oC: 1- coal ○– A and ● - B air gasification; 2- char Δ – C, ◊ - D and □ - E air

gasification,▲ – C and ■ -E steam - air gasification.

Page 17: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

Schematic diagram of the devolatilizer

Page 18: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

AMOUNT OF LIQUIDS, kg liquids/kg coal daf

PYROLYSYS TEMPERATURE, oCAmount of liquids as a function of pyrolysis temperature:

— coal “Siersza” (Tomeczek et al, 1988), — coal “Loy Yang” (Edwards et al, 1985)

— coal “Millmerran” (Edwards et al, 1985), — coal eastern U.S. bituminous (Sass, 1988).

Page 19: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

COAL DEVOLATILIZATION UNIT DIAGRAM

Page 20: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

DEVOLATILIZER

BOILERCOMBUSTION

GASES

HEAT CHAR

AIR

WATER

TAR

GAS

COAL

STEAM

Connection of a coal devolatizer with the boiler

Page 21: DEVELOPMENT OF A FLUIDIZED BED COAL GASIFICATION TECHNOLOGY Jerzy TOMECZEK Department of Process Energy Silesian University of Technology Presentation,

CHARACTERISTICS OF 1, 15, 50 t/h REACTORS