Gas purification

Details Gas purification Gas purification

1973-12-18

1976-06-29

Peters, G. O.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423236, 423571, 423573G, C01B 1704

Patent

active

039668762

ABSTRACT:
Gas purification processes for removing hydrogen sulphide (H.sub.2 S) from a foul gas stream, such as coal carbonization gases, involving a circulating liquid reagent in which the H.sub.2 S is absorbed and converted to sulphur which is recovered and the reagent regenerated and recycled exhibit progressive deterioration of the circulating reagent due to contamination by process by-products. The invention provides a method of decontaminating such a circulating reagent by subjecting a bled-off sidestream to high temperature hydrolysis, so producing gaseous products recyclable to the foul gas stream. Solid products may also be produced which may be recycled to the reagent, perhaps after high-temperature reduction.

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patent: 1852160 (1932-04-01), Hansen
patent: 1932819 (1933-10-01), Hansen
patent: 1961255 (1934-06-01), Sperr
patent: 3086838 (1963-04-01), Giammarco
patent: 3558272 (1971-01-01), Urban
patent: 3878289 (1975-04-01), Beavon
patent: 3887682 (1975-06-01), Kumata et al.

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