Removing pollutants from aqueous liquor used to scrub fuel gasif

Details Removing pollutants from aqueous liquor used to scrub fuel gasif Removing pollutants from aqueous liquor used to scrub fuel gasif

1977-04-20

1978-09-19

Bashore, S. Leon

Gas separation

Means within gas stream for conducting concentrate to collector

48197R, 55 70, 55 73, 423574G, B01D 1900

Patent

active

041150791

ABSTRACT:
A process of treating an aqueous liquor which has been used to scrub a hot raw gas produced by the gasification of a solid, liquid or gaseous fuel, which liquor has dissolved therein gaseous pollutant, comprising flashing said liquor from a temperature of at least 100.degree. C and a pressure of at least about 5 bars in at least on preliminary flashing stage to an intermediate pressure in the range of about 1.1 to 4 bars, separating the flashed-off gases containing the bulk of the pollutants from the residual aqueous liquor, and then flashing off the residual liquor to atmospheric pressure. The pollutant gas may contain H.sub.2 S and the gas product of the preliminary flashing can be fed to a Claus process for removing sulfur compounds.

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patent: 3975172 (1976-08-01), Ranke
patent: 4011066 (1977-03-01), Bratzler et al.

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