Oxidation of coal--water slurry feed to hydrogasifier. [7 claims; 1 drawing]

Patent · Tue May 18 00:00:00 EDT 1976

OSTI ID:7335063

Lee, B S

An aqueous coal slurry is preheated, subjected to partial oxidation and vaporization by injection of high pressure oxygen and is introduced into a top section of a hydrogasifier in direct contact with hot methane-containing effluent gases where vaporization of the slurry is completed. The resulting solids are reacted in the hydrogasifier and the combined gases and vapors are withdrawn and subjected to purification and methanation to provide pipeline gas. The amount of oxygen injected into the slurry is controlled to provide the proper thermal balance whereby all of the water in the slurry can be evaporated in contact with the hot effluent gases from the hydrogasifier. 7 claims, 1 drawing figure.

• Assignee: Energy Research and Development Administration
• Patent Number(s): US 3957460
• OSTI ID: 7335063
• Resource Relation: Patent File Date: Filed date 9 Sep 1975; Other Information: PAT-APPL-611,780
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL GASIFICATION
EQUIPMENT
HIGH BTU GAS
PRODUCTION
COAL
ENERGY BALANCE
EVAPORATION
HEATING
OXIDATION
OXYGEN
SLURRIES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CRYOGENIC FLUIDS
DISPERSIONS
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
MIXTURES
NONMETALS
PHASE TRANSFORMATIONS
SUSPENSIONS
010404* - Coal
Lignite
& Peat- Gasification