Title: Method for reducing hydrogen halide content in synthesis gas
Application Number: 94194120 Application Date: 1994.11.08
Publication Number: 1135233 Publication Date: 1996.11.05
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: B01D53/68;C10K1/20
Applicant(s) Name: Shell Internationale Research Maatschappij B. V. Address:
Inventor(s) Name: F. G. A Van Den Berg;E. L. Doering;U. Mahagaokar
Attorney & Agent: SUN AI
Abstract:
    A method for reducing the hydrogen halide(s) content of a synthesis gas stream by gasifying a carbonaceous feed material in a gasifier to produce a gas/solids mixture of hydrogen, carbon monoxide, hydrogen halide gas, and fly slag particles; passing the gas/solids mixture to a solids removal zone where at least a portion of the fly slag particles are removed, to produce a gas stream; admixing with the said gas stream an alkali metal oxide, hydroxide, bicarbonate, or carbonate to produce an alkali metal compound/gas mixture; passing the alkali metal compound/gas mixture to a means for increasing the contact time between said hydrogen halide(s) and said alkali metal compound(s) or their thermal decomposition products; reacting the alkali metal compound(s) with the said hydrogen halide(s) to produce solid alkali metal halide(s); and recovering a gas stream substantially free of hydrogen halide(s) and solids.
Time: 14
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