Gasification of fine-grained or sludgy carbonaceous material

Details Gasification of fine-grained or sludgy carbonaceous material Gasification of fine-grained or sludgy carbonaceous material

1986-11-18

1988-07-19

Kratz, Peter

Gas: heating and illuminating

Processes

Fuel mixtures

48202, 48209, C10J 306

Patent

active

047582480

ABSTRACT:
Method for gasifying carbonaceous fine-grained or sludgy material, such as powdered brown coal or biomass, in fixed bed reactors. Carbonaceous material to be gasified is pre-heated and dried, and mixed with coarse-grained, non-carbonaceous ballast material. This mixing is carried out prior to, during or after the pre-heating and drying of the carbonaceous material, to thereby obtain a pre-heated and dried mixture of the carbonaceous material and the ballast material, and to also obtain vapor from the pre-heating and drying of the same. The heated and dried mixture is contacted with a gasification medium within a fixed bed reactor, at a temperature sufficiently high to gasify the carbonaceous material. The gasification medium includes the vapor from the pre-heating and drying of the carbonaceous material. The ballast material provides sufficient gas permeability to the fine-grained or sludgy carbonaceous material, to permit gasification thereof in the fixed bed reactor.

REFERENCES:
patent: 189576 (1877-04-01), Rigby
patent: 538908 (1895-05-01), Gobbe
patent: 795874 (1905-08-01), Whitfield
patent: 906793 (1908-12-01), Greerstreet
patent: 1977684 (1934-10-01), Lucke
patent: 2175613 (1939-10-01), Radtke
patent: 2591595 (1952-04-01), Ogorzaly
patent: 4464183 (1984-08-01), Arisaki

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