Fossil energy program. Progress report for February 1978

Technical Report · Mon May 01 04:00:00 EDT 1978

DOI:https://doi.org/10.2172/7178005· OSTI ID:7178005

McNeese, L. E.

In support of in situ gasification, block pyrolysis experiment BP2-44 was conducted in which a bituminous coal block was heated to 650/sup 0/C in three steps using a H/sub 2/ reactor purge gas. Swelling of the block and plastic behavior during pyrolysis were substantially reduced at the higher heating rate of this experiment (5 C/sup 0//min) compared with previous experiments at a heating rate of 3 C/sup 0//min. The first CoCrAlY specimens have been plasma sprayed in our coatings inspection program. In the welding and cladding program, the first samples of 2/sup 1///sub 4/ Cr-1 Mo steel with a clad overlay of type 320 Cb were prepared by submergered arc welding with an alloy-fortified flux. No fissuring was detected either visually or by dye penetrant inspection. Experimental work in the fireside corrosion tests to expose various heat exchanger tubes at the Fluidyne atmospheric fluidized bed combustor continues. Scale on types 304, 310, and 316 stainless steels and Alloy 800 exposed for 1000 and 1500 hr is composed primarily of Ca compounds and coal ash with minor amounts of iron, nickel, and chrome oxides. In the gas-fired potassium boiler experiment, 4.5 hrs of stable boiling operation was obtained at power levels up to about 3 x 10/sup 6/ Btu/hr. A potassium leak occurred at a 2-in. tee where liquid potassium streams from the condenser and the gas separator mix. Work is in progress for repairing the system. In the work on environmental controls for low-BTu gasification, preliminary estimates of the raw, low-Btu product gas and the aqueous wastes likely to be generated in the gasification of coal by four representative gasifiers have been developed. Work continued on an evaluation of an in situ coal gasification facility for producing methanol which would then be converted to gasoline via the Mobil-M process.

• Research Organization: Oak Ridge National Lab., Tenn. (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 7178005
• Report Number(s): ORNL/TM-6329
• 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
ALCOHOLS
ALKALI METALS
ALLOYS
BOILERS
BURNERS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-MOLYBDENUM STEELS
CLADDING
COAL
COAL GASIFICATION
COAL LIQUEFACTION
COAL PREPARATION
COATINGS
COMBUSTORS
COMMINUTION
COMPARATIVE EVALUATIONS
CONCENTRATORS
CORROSION
DECOMPOSITION
DEPOSITION
DISSOLUTION
ELEMENTS
ENERGY SOURCES
EQUIPMENT
FABRICATION
FLUIDIZED-BED COMBUSTORS
FLUIDS
FOSSIL FUELS
FRACTURE PROPERTIES
FUEL FEEDING SYSTEMS
FUEL GAS
FUEL SYSTEMS
FUELS
GAS FUELS
GASES
GASIFICATION
GASOLINE
HIGH BTU GAS
HYDROXY COMPOUNDS
HYGAS PROCESS
IN-SITU GASIFICATION
IN-SITU PROCESSING
INSPECTION
IRON ALLOYS
IRON BASE ALLOYS
JOINING
LEACHING
LIQUEFACTION
MAGNETIC SEPARATORS
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
METALS
METHANOL
ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
POTASSIUM
PROCESSING
PRODUCTION
PROTECTIVE COATINGS
PURIFICATION
SEPARATION PROCESSES
SNG PROCESSES
SOLID WASTES
STEELS
SURFACE COATING
TEST FACILITIES
TESTING
WASTES
WELDING
WORKING FLUIDS