Laboratory support for in situ gasification: reaction kinetics. Annual report October 1977-September 1978

Technical Report · Thu Jan 31 23:00:00 EST 1980

DOI:https://doi.org/10.2172/5571378· OSTI ID:5571378

Young, J. E.; Wong, S. H.; Johnson, J. E.; Sikand, N.; Jonke, A. A.

This work is directed toward support studies for the national program for the development and demonstration of in situ coal gasification processes. The objective of this work is to determine the reaction-controlling variables and reaction kinetics for the gasification of chars obtained by pyrolyzing coal in simulated underground gasification conditions. The reactions being studied and to be studied include steam-char, CO/sub 2/-char, H/sub 2/-char, the water-gas shift reaction, and the methanation reaction. In this report are presented data regarding the kinetics of the reaction of steam with chars prepared from Pittsburgh seam high-volatile bituminous coal. In addition, a reaction model is described correlating the steam-char reaction rates measured earlier for Hanna subbituminous coal with operating conditions including temperature, partial pressures of steam and hydrogen, and extent of carbon gasification. Partial results are presented and discussed for an investigation of structural parameters of Hanna char as a function of pyrolysis conditions and extent of carbon gasified.

• Research Organization: Argonne National Lab., IL (USA)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5571378
• Report Number(s): ANL/CEN/FE-79-4
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHARS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COAL GASIFICATION
CRYOGENIC FLUIDS
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASIFICATION
HYDROGEN
IN-SITU GASIFICATION
IN-SITU PROCESSING
KINETICS
METHANATION
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PROCESSING
PYROLYSIS
PYROLYSIS PRODUCTS
REACTION KINETICS
SHIFT PROCESSES
STEAM
THERMOCHEMICAL PROCESSES