Pipeline gas from coal-hydrogenation (IGT hydrogasification process). Interim report No. 2, July 1974--June 1975

Technical Report · Wed Jan 01 04:00:00 EST 1975

DOI:https://doi.org/10.2172/7131739· OSTI ID:7131739

Ten tests were conducted in the HYGAS pilot plant, using Montana lignite as feed. In June 1974, Test 28 signified the beginning of the program wherein steam-oxygen gasification was combined with hydrogasification to produce SNG from coal, steam, and oxygen. During the next two tests, solid flow behavior through the high-temperature reactor and the steam-oxygen gasifier were examined and modifications were made to improve solids flow and control. As a result of the changes made, Test 31 showed a much-improved solids flow into and out of the steam-oxygen gasifier, indicating good fluidization throughout. The test was terminated when the upper transfer lines were plugged. Good material balance and engineering data were collected. Test 33 provided a continuous and extended operation of the HYGAS plant in which over 500 tons of coal were fed to the gasifier. The entire plant was on-stream, and the methanator behaved extremely well. Test 34 represented one of the most important runs in the program. The entire plant was operated from coal feeding through methanation with no external hydrogen addition and no supplemental heat added to the gasifier. On a nitrogen-free basis, the product gas after methanation was 95 percent CH/sub 4/ and 5 percent H/sub 2/ with a heating value of over 950 Btu/SCF. Substantial information was gathered. Material and heat balances were obtained for the entire plant. With Tests 34, 35, and 36, important operating parameters for the system were established to enable the HYGAS/steam-oxygen gasification program with lignite as the feedstock to be successfully concluded with Test 37. A total of 395 hours of continuous operation was logged, during which over 790 tons of dried coal were fed.

• Research Organization: Institute of Gas Technology, Chicago, IL (USA)
• OSTI ID: 7131739
• Report Number(s): FE-1221-144
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360205* -- Ceramics
Cermets
& Refractories-- Corrosion & Erosion
360604 -- Materials-- Corrosion
Erosion
& Degradation
AGGLOMERATION
ASHES
BROWN COAL
CALORIFIC VALUE
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COAL GASIFICATION
COMBUSTION PROPERTIES
CORROSION
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
FUNCTIONAL MODELS
GAS FUELS
GASES
GASIFICATION
HIGH BTU GAS
HYGAS PROCESS
LIGNITE
MASS BALANCE
METHANATION
OPERATION
OXIDATION
PHASE STUDIES
PILOT PLANTS
REFRACTORIES
RESIDUES
SNG PROCESSES
THERMAL INSULATION