Method of reducing halides in synthesis gas

Details Method of reducing halides in synthesis gas Method of reducing halides in synthesis gas

1994-08-24

1997-03-18

Lewis, Michael

Compositions

Gaseous compositions

Carbon-oxide and hydrogen containing

423240R, 423240S, 48197R, 48210, B01D 5368, C01B 350, C01B 334

Patent

active

056119631

ABSTRACT:
The invention is a method for reducing halide content of a synthesis gas stream by mixing a metal compound of potassium oxide, potassium hydroxide, potassium bicarbonate, potassium carbonate, sodium oxide, sodium hydroxide, sodium bicarbonate, or sodium carbonate, with a carbonaceous feed material which contains halide-containing compounds; gasifying the carbonaceous feed material in an entrained flow gasifier under gasifying conditions thus producing a synthesis gas containing hydrogen and carbon monoxide; where the metal compound vaporizes and the vaporized metal compound reacts with the halide from the halide-containing compounds, thus producing a vaporized metal halide; cooling the vaporized metal halide, thus producing solid metal halide particles; passing the synthesis gas stream to a solids removal unit for removing the solid metal halide particles; and recovering the synthesis gas stream substantially free of halide-containing compounds.

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David A. Fox and Alfred H. White, "Effect of Sodium Carbonate Upon Gasification of Carbon and Production of Producer Gas," Industrial and Engineering Chemistry, vol. 23, No. 3, pp. 259-266.

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