Coal gasification reactions with on-line in-situ FT-IR analysis. Ninth quarterly report, September 4-December 3, 1983

Technical Report · Tue Jan 31 04:00:00 EST 1984

OSTI ID:5314689

Solomon, P R; Hamblen, D G; Best, P; Markham, J R

During the ninth quarter, work continued on the measurements of coal particle temperatures from FT-IR emission spectra. Attention has been focused on the departures from black-body behavior which have been observed for several cases. Additional data have been obtained confirming that the high temperature departures from black-body behavior appear to be caused by soot formation. The short residence time departures still are not definitely confirmed. There is a wide discrepancy in reported rates for pyrolysis. Much of the problem appears to be due to heat transfer limitations which have not been properly accounted for. To address this problem a new experiment has been designed for rapid heat transfer. The experiments performed with a new reactor have yielded the highest rates ever measured in the 700 to 900/sup 0/C range. The results suggest that lower rates measured at these temperatures and comparable or lower rates measured at high temperatures were heat transfer limited. An interesting area of progress has resulted from a combined effort on our METC program and our GRI program. This work is aimed at examining the mechanisms of tar formation. A careful analysis of coal Field Ionization Mass Spectra (FIMS), specifically the regular arrangement of peaks, is providing some interesting results on coal structure. In a continuation of this work, several macerals and a coal which had been perdeutero-methylated have been analyzed by the FIMS technique. The maceral series shows very high molecular weight tars for the high hydrogen exinites and very low molecular weight tars for fusinites, with the vitrinites in the middle. This variation in molecular weight is similar to what is observed for rank variations. The perdeutero-methylated coals are also quite interesting. The results suggest substantial deuterium scrambling, more fluidity, and a shift of the spectral features by 17, consistent with 1 hydroxyl group per molecule. 8 refs., 25 figs.

• Research Organization: Advanced Fuel Research, Inc., East Hartford, CT (USA)
• DOE Contract Number: AC21-81FE05122
• OSTI ID: 5314689
• Report Number(s): DOE/FE/05122-2113; ON: DE86014840
• 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
BROWN COAL
CARBON COMPOUNDS
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHARS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COAL
COAL GASIFICATION
COAL TAR
DATA
DECOMPOSITION
ENERGY SOURCES
EXPERIMENTAL DATA
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
INFORMATION
INFRARED SPECTRA
KINETICS
LIGNITE
MACERALS
MATERIALS
MOLECULAR WEIGHT
NUMERICAL DATA
ON-LINE MEASUREMENT SYSTEMS
ON-LINE SYSTEMS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS
PYROLYSIS PRODUCTS
REACTION KINETICS
RESEARCH PROGRAMS
SOOT
SPECTRA
SUBBITUMINOUS COAL
TAR
THERMOCHEMICAL PROCESSES
YIELDS