Entrained flow coal gasification process

Details Entrained flow coal gasification process Entrained flow coal gasification process

1983-07-25

1985-07-30

Kratz, Peter

Gas: heating and illuminating

Processes

Coal and water

48206, 48210, 48DIG4, 252373, C10J 346

Patent

active

045319499

ABSTRACT:
A process for gasifying coal comprising supplying to an upper portion of an entrained flow gasifier a coal powder having a particle size of 100 .mu.m or less whereby gasification is conducted at 900.degree. C. or higher in the absence of oxygen, supplying a coal powder including coarser particles and oxygen in an amount from that necessary for complete combustion of coal to a half of said amount to a lower portion of the gasifier whereby gasification is conducted at a melting point of coal ash or higher, and leading the gases produced at the lower portion of the gasifier directly to the upper portion of the gasifier, does not require recycle of char to the gasifier and gives a high gasification efficiency by passing coal powder through the gasifier only one time.

REFERENCES:
patent: 3817723 (1974-06-01), Donath
patent: 4168956 (1979-09-01), Blaskowski
Young, "Recent Development in High Pressure, Entrained Flow, Slagging Gasification of Coal", Aug. 4-6, 1981.

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