Gasification process

Patent · Tue Feb 03 04:00:00 EST 1981

OSTI ID:6421756

Beall, J F; Dach, M M; Kaufman, H C; Woldy, P N

Coal or other high ash containing carbonaceous solid fuel is reacted with a free-oxygen containing gas, with or without a temperature moderator, in a down-flow partial oxidation gas generator to produce a stream of raw synthesis gas, fuel gas, or reducing gas. A large portion of the combustion residue, I.E., molten slag and/or particulate solids that is entrained in the down-flowing generated gas stream is removed by gravity when the gas stream is passed through a diversion chamber where the velocity of the gas stream is reduced and its direction is diverted. The main gas stream leaving the diversion chamber through the side outlet passes upward through a solids separation zone, optionally including gas-gas quench cooling, cyclones, filters, impingement separators, or combinations thereof, where additional entrained solids are removed and where some cooling of the gas stream may be effected by impingement with a cooled cleaned recycle portion of the gas stream. Next, most of the sensible heat in the gas stream is recovered by the production of steam. The gas stream, with a substantially reduced solids content, is passed through the tubes of one or more shell-and straight fire tube gas coolers.

• Assignee: Texaco Inc
• Patent Number(s): US 4248604
• OSTI ID: 6421756
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
010404* -- Coal
Lignite
& Peat-- Gasification
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320304 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
COAL GASIFICATION
ENERGY RECOVERY
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
GASIFICATION
HEAT RECOVERY
PURIFICATION
RECOVERY
STEAM GENERATION
SYNTHESIS GAS
THERMOCHEMICAL PROCESSES
WASTE HEAT UTILIZATION
WASTE PRODUCT UTILIZATION