Coal Technology Program. Progress report for November 1977

Technical Report · Sun Jan 01 04:00:00 EST 1978

DOI:https://doi.org/10.2172/5164486· OSTI ID:5164486

A block of Pittsburgh seam bituminous coal and a block of Wyodak subbituminous coal were pyrolyzed under reducing gas in support of in situ gasification. Information from previously completed block pyrolysis of bituminous coal under an argon atmosphere show that differences in evolved gas result from differences in heating rates. Compared to block pyrolysis at 0.3 C/sup 0//min, block pyrolysis at 3 C/sup 0//min produces less gas but gas with a higher heating value, yielding a higher overall pyrolysis gas efficiency in recovering coal heating value. Experimental work on the fracture toughness and tensile properties of steels that may be used for piping and pressure vessels in very large gasification systems continued. The toughness of quenched 2/sup 1///sub 4/ Cr-1 Mo steel simulating the surface of a 254 to 305 mm-thick plate was measured, and the differences in toughness and tensile properties following two temperature treatments were determined. Post-weld heat treatment effects were also characterized. All properties remained within the range for ASME SA 387, Grade 22, Class 2 material. Work on inspection techniques for ceramic and cermet coatings is being closed out by completing and updating reports in various draft stages. Work is underway to establish a program for testing coal feeders under development by DOE/FE. Jet Propulsion Laboratory has recommended five feeders for testing. (LTN)

• Research Organization: Oak Ridge National Lab., Tenn. (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5164486
• Report Number(s): ORNL/TM-6217
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
36 MATERIALS SCIENCE
360100 -- Metals & Alloys
ALKALI METALS
ALLOYS
BENCH-SCALE EXPERIMENTS
BOILERS
BURNERS
CARBONACEOUS MATERIALS
CHARPY TEST
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-MOLYBDENUM STEELS
CHROMIUM-NICKEL STEELS
COAL
COAL GASIFICATION
COAL LIQUEFACTION
COAL LIQUIDS
COATINGS
COMBUSTORS
CONTAINERS
CORROSION
CORROSION RESISTANT ALLOYS
DECOMPOSITION
DOCUMENT TYPES
ELEMENTS
ENERGY RECOVERY
ENERGY SOURCES
FABRICATION
FLUIDIZED-BED COMBUSTORS
FLUIDS
FOSSIL FUELS
FRACTURE PROPERTIES
FUEL FEEDING SYSTEMS
FUEL GAS
FUEL SYSTEMS
FUELS
GAS FUELS
GASES
GASIFICATION
HEAT EXCHANGERS
HEAT RECOVERY
HEAT RESISTING ALLOYS
HEAT TREATMENTS
HOT GAS CLEANUP
IN-SITU GASIFICATION
IN-SITU PROCESSING
INSPECTION
IRON ALLOYS
IRON BASE ALLOYS
JOINING
LIQUEFACTION
MECHANICAL PROPERTIES
METALS
NICKEL ALLOYS
PIPES
PRESSURE VESSELS
PROCESSING
PROTECTIVE COATINGS
PURIFICATION
RECOVERY
REVIEWS
STAINLESS STEEL-310
STAINLESS STEELS
STEELS
TENSILE PROPERTIES
TEST FACILITIES
TESTING
TOPPING CYCLES
TUBES
VAPORS
WELDING
WORKING FLUIDS
YIELDS