Coal gasification reactions with on-line in-situ FT-IR analysis. Fifteenth quarterly report, March 3-June 3, 1985

Technical Report · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5380292

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

During the fifteenth quarter, the particle-temperature and Functional Group Models were used to simulate results of pyrolysis of Illinois No. 6 coal in the heated tube reactor with good results. Pyrolysis studies were done with North Dakota lignite and Montana Rosebud coals at 30 K/min in a combined TGA/EGA instrument developed at AFR. We optimized the set of kinetic rates and coal composition parameters to fit both the low heating rate data from this system (0.5 K/s) and high heating data from the heated tube reactor (20,000 K/s), with reasonable success. The procedures for char reactivity, active site density, and surface area measurements were established and a set of chars was selected. Chars were analyzed for sulfur forms from pyrolysis of Kentucky No. 9 coal in the entrained flow reactor at 1100/sup 0/C and 1600/sup 0/C. A test plan was completed for pyrolysis experiments in the high pressure reactor. Data collection was begun with North Dakota lignite, which shows only modest pressure effects. Work proceeded on the application of the FT-IR emission/transmission spectroscopy in two areas: (1) the measurement of the spectral emittance for coal and char and (2) the measurement of temperature in the Entrained Flow Reactor (EFR). We have begun work on integrating a version of the hydrocarbon cracking model into the Functional Group (FG) Model for coal pyrolysis. This will allow us to make better predictions of olefin and acetylene yields and will add the ability to predict soot formation. We have also begun work in integrating the DRC (depolymerization, repolymerization, crosslinking) model into the FG model. This will allow prediction of the amount and molecular weight distribution of tar, along with pressure effects on tar yields. 13 refs., 21 figs.

• Research Organization: Advanced Fuel Research, Inc., East Hartford, CT (USA)
• DOE Contract Number: AC21-81FE05122
• OSTI ID: 5380292
• Report Number(s): DOE/FE/05122-2119; ON: DE86014846
• 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)
ABSORPTION SPECTRA
ACTIVATION ENERGY
BITUMINOUS COAL
BLACK COAL
BROWN COAL
CARBONACEOUS MATERIALS
CHARS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL
COAL GASIFICATION
COAL TAR
DATA
DECOMPOSITION
DENSITY
EMISSION SPECTRA
ENERGY
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUELS
GASIFICATION
HEATING RATE
INFORMATION
INFRARED SPECTRA
KINETICS
LIGNITE
MATERIALS
MATHEMATICAL MODELS
MOLECULAR WEIGHT
NUMERICAL DATA
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PHYSICAL PROPERTIES
PRESSURE EFFECTS
PYROLYSIS
PYROLYSIS PRODUCTS
REACTION KINETICS
RESEARCH PROGRAMS
SOOT
SPECTRA
SUBBITUMINOUS COAL
SULFUR CONTENT
SURFACE AREA
SURFACE PROPERTIES
TAR
THERMOCHEMICAL PROCESSES