Coal gasification reactions with on-line in-situ FTIR analysis. Fifth quarterly report, September 4-December 3, 1982

Technical Report · Thu Dec 23 04:00:00 EST 1982

OSTI ID:5439919

Solomon, P R; Hamblen, D G; Best, P E

During the fifth quarter, the reactor configuration was unchanged. Good reproducibility was obtained and mass balances were acceptable for low tar coals. For high tar coals, missing material can be up to 20% due to accumulation of tar on the walls of the water cooled collector and cyclone. Data for a Pittsburgh No. 8 bituminous coal and a Gillette, Wyoming subbituminous coal were collected at a furnace temperature of 1100/sup 0/C. The general behavior of the various species is similar to the data on the Beulah lignite and Kentucky No. 9 coal except that the quantities of species vary. The similarity of the species evolution data for four coals of varying rank supports the assumption that species kinetics are insensitive to coal rank. The data for the two new coals are presented and compared to data for the original coals. Work on the pyrolysis theory is continuing. The major emphasis is validating the model for the same coal in both the heated grid and entrained flow reactors using the same coal composition and kinetic parameters. Simulations have been performed for a Beulah, North Dakota lignite and a Pittsburgh No. 8 bituminous coal. Theory modifications have been made for computing the changes in hydrogen functionality when a tar molecule is stabilized by an aliphatic or hydroaromatic hydrogen. The changes have resulted in improved simulations for the aromatic hydrogen and methane formation. Work continued on elucidating the mechanisms of particle swelling. The bubble growth and rupture equations were integrated into the pyrolysis theory and predictions compared to data. Good agreement was obtained in predicting the heating rate dependent swelling of a Pittsburgh Seam coal. Work has been initiated to improve the modeling of tar evolution. The tar is treated as a single product with an elemental and functional group distribution based on the parent coal. 5 refs., 31 figs., 17 tabs.

• Research Organization: Advanced Fuel Research, Inc., East Hartford, CT (USA)
• DOE Contract Number: AC21-81FE05122
• OSTI ID: 5439919
• Report Number(s): DOE/FE/05122-2110; ON: DE86014837
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
010406 -- Coal & Coal Products-- Pyrolysis & Cracking-- (-1987)
BITUMINOUS COAL
BLACK COAL
BUBBLES
CARBONACEOUS MATERIALS
CHARS
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL
COAL GASIFICATION
COAL RANK
COAL TAR
DATA
DECOMPOSITION
ENERGY SOURCES
EXPERIMENTAL DATA
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
HYDROGEN COMPOUNDS
INFORMATION
INFRARED SPECTRA
KINETICS
MATERIAL BALANCE
MATERIALS
NUMERICAL DATA
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PYROLYSIS
PYROLYSIS PRODUCTS
REACTION KINETICS
RESEARCH PROGRAMS
SPECTRA
SUBBITUMINOUS COAL
SWELLING
TAR
THERMOCHEMICAL PROCESSES
VERY HIGH TEMPERATURE
WATER
YIELDS