Experimental program for the development of peat gasification. Interim report No. 3. Coiled tube reactor experiments

Technical Report · Sun Jan 01 00:00:00 EST 1978

DOI:https://doi.org/10.2172/6875922· OSTI ID:6875922

This interim report presents the results of 28 peat hydrogasification tests conducted in a dilute-phase, short-residence time (a few seconds) coiled-tube reactor to determine the effects of temperature (850/sup 0/ to 1500/sup 0/F) and hydrogen partial pressure (0 to 1000 psia) on product distribution and yields. In general, the results show that many features of peat hydrogasification are qualitatively similar to those of lignite and higher rank coals. However, the quantitative and kinetic characteristics of peat gasification are quite unique. Therefore, the process concept most advantageous for converting peat to SNG is different from those which are most suitable for gasifying coals. The tests show that the carbon converted directly to hydrocarbon gases in a short-residence-time hydrogasifier is up to four times as high for peat as for lignite. Therefore, a single hydrogasification stage will be adequate for converting peat to SNG and a high yield of hydrocarbon gases is obtained at relatively low hydrogen partial pressures. Another unique feature of peat hydrogasification is that temperature is very effective in controlling relative yields of gas and oil. The data obtained have been quantitatively analyzed and a peat-gasification model has been developed. Based on the laboratory test results, a preferred configuration for gasifying peat has been selected and named a PEATGAS reactor. It incorporates a dilute-phase, concurrent, short-residence time hydrogasifier and a fluidized-bed, nonslagging, char gasifier with oxygen. Currently, process development unit tests are under way with the objective of determining the effects of initial scale-up from laboratory to PDU-scale.

• Research Organization: Institute of Gas Technology, Chicago, Ill. (USA)
• DOE Contract Number: EX-76-C-01-2469
• OSTI ID: 6875922
• Report Number(s): FE-2469-17
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
10 SYNTHETIC FUELS
PEAT
GASIFICATION
HYDROGENATION
PEATGAS PROCESS
CHEMICAL REACTION KINETICS
BENCH-SCALE EXPERIMENTS
CHARS
COAL GASIFICATION PLANTS
DESIGN
MATHEMATICAL MODELS
PROCESS DEVELOPMENT UNITS
YIELDS
CHEMICAL REACTIONS
ENERGY SOURCES
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
INDUSTRIAL PLANTS
KINETICS
REACTION KINETICS
SNG PROCESSES
010404* - Coal
Lignite
& Peat- Gasification
090121 - Hydrocarbon Fuels- Chemical Synthesis- (1976-1989)