COSTEAM: low-rank coal liquefaction; an updated analysis

Journal Article · Thu Jan 01 04:00:00 EST 1976 · Energy (Stamford, Conn.); (United States)

OSTI ID:7325752

Appell, H R

COSTEAM, a process that can use the lowest-cost coal and reducing gas without adding catalysts, may yield a lower-cost liquid oil from coal. Either carbon monoxide or synthesis gas is used with water (from lignite rocks) in place of hydrogen. Process descriptions and data are given for carbon monoxide and synthesis gas at different temperatures, pressures, and times. Autoclave experiments at ERDA's Pittsburgh Energy Research Center have yielded 90 to 94% conversion of lignite to oil, gas, and water at temperatures of 425 to 450/sup 0/C and pressures of 3000 to 4000 lb/in/sup 2/. The yield of oil is lower (60 to 63%) than from liquefaction of bituminous coal because lignite has a high oxygen content. Btu content of the oil yield is 17,000 compared to the 8000 Btu content of the base lignite. Applications of the COSTEAM process include preparation of coal oil slurry and the processing of solid organic wastes. The method is environmentally good because of the low sulfur content of the oil product. 11 references. (DCK)

• Research Organization: Pittsburgh Energy Research Center
• OSTI ID: 7325752
• Journal Information: Energy (Stamford, Conn.); (United States), Journal Name: Energy (Stamford, Conn.); (United States) Vol. 1:4; ISSN ENGYD
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010900 -- Coal
Lignite
& Peat-- Environmental Aspects
29 ENERGY PLANNING, POLICY, AND ECONOMY
294001 -- Energy Planning & Policy-- Coal
BITUMINOUS COAL
BLACK COAL
BROWN COAL
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
COAL
COAL LIQUEFACTION
COSTEAM PROCESS
DISPERSIONS
ECONOMICS
ENERGY SOURCES
ENVIRONMENTAL EFFECTS
FLUIDS
FOSSIL FUELS
FUELS
GASES
LIGNITE
LIQUEFACTION
MANAGEMENT
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PROCESSING
RESEARCH PROGRAMS
SLURRIES
SUSPENSIONS
SYNTHESIS GAS
WASTE MANAGEMENT
WASTE PROCESSING