Coal gasification reactions with on-line in-situ FT-IR analysis. Fourteenth quarterly report, December 3, 1984-March 3, 1984

Technical Report · Sun Jan 01 04:00:00 EST 1984

OSTI ID:5305812

Solomon, P R; Serio, M A; Hamblen, D G; Best, P E; Markham, J R; Heninger, S G

During the fourteenth quarter, the particle temperature model was modified to include the effects of latent heats and heats of reaction. This was done by coupling the particle temperature model with a simplified (3 rates) kinetic model to predict the volatile evolution and char composition during pyrolysis. Several material balance runs were done with Illinois No. 6 coal in the heated tube reactor using helium as the carrier. The results obtained for weight loss and individual product yields were consistent with the high kinetic rates observed with the North Dakota lignite and Montana Rosebud coals in this same reactor. Additional FT-IR temperature measurement experiments were not done during the past quarter due to some problems reproducing transmission levels from previous experiments. Some desulfurization experiments were done in the tube reactor using Illinois No. 6 coal with helium, carbon dioxide, and/or ethane present. The raw coal contained about 3.3 wt % total sulfur of which 2.4 wt % was organic. With helium present, significantly enhanced desulfurization was obtained when compared to chars prepared from the same coal in the entrained flow reactor. The addition of ethane reduced sulfur levels even further. A total of 24 hot coal tests have been done in the high pressure reactor (HPR), 3 with the North Dakota Lignite and 21 with the Montana Rosebud coal (for our other METC contract). These include experiments at a nominal temperature of 800/sup 0/C, a residence time of about 0.5 s, and pressures ranging up to 225 psig. The reproducibility of product yields and material balances was generally excellent. In addition, an experiment was done at 1150/sup 0/C, 25 psig, and 0.5 s residence time. Operation was again very good. 15 refs., 16 figs., 1 tab.

• Research Organization: Advanced Fuel Research, Inc., East Hartford, CT (USA)
• DOE Contract Number: AC21-81FE05122
• OSTI ID: 5305812
• Report Number(s): DOE/FE/05122-2118; ON: DE86014845
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
010404* -- Coal
Lignite
& Peat-- Gasification
010406 -- Coal & Coal Products-- Pyrolysis & Cracking-- (-1987)
ALKANES
BITUMINOUS COAL
BLACK COAL
BROWN COAL
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHARS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL
COAL GASIFICATION
DATA
DECOMPOSITION
DESULFURIZATION
DIAGNOSTIC TECHNIQUES
ELEMENTS
EMISSION SPECTRA
ENERGY SOURCES
ENERGY TRANSFER
ETHANE
EXPERIMENTAL DATA
FLUIDS
FOSSIL FUELS
FUELS
GASES
GASIFICATION
HEAT TRANSFER
HELIUM
HYDROCARBONS
INFORMATION
KINETICS
LIGNITE
MATERIAL BALANCE
MATERIALS
MATHEMATICAL MODELS
MEDIUM PRESSURE
NONMETALS
NUMERICAL DATA
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS
PYROLYSIS PRODUCTS
RARE GASES
REACTION KINETICS
RESEARCH PROGRAMS
SPECTRA
SUBBITUMINOUS COAL
TEMPERATURE MEASUREMENT
THERMOCHEMICAL PROCESSES
TIME DEPENDENCE
VERY HIGH TEMPERATURE