Separation of hydrogen sulfide from gases by the use of cuprous

Details Separation of hydrogen sulfide from gases by the use of cuprous Separation of hydrogen sulfide from gases by the use of cuprous

1984-12-17

1987-03-31

Doll, John

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423463, 423467, B01D 5334

Patent

active

046542027

ABSTRACT:
H.sub.2 S:CuAlCl.sub.4 and 2 H.sub.2 S:CuAlCl.sub.4 are complex addition compounds which may be prepared by contacting CuAlCl.sub.4 with gaseous H.sub.2 S at partial pressures of 0.1 to 1.0 atma and temperatures of 20.degree.-60.degree. C. These new compounds are useful in processes to separate hydrogen sulfide from gaseous mixtures and to prepare pure hydrogen sulfide. Complexation can be accomplished by using CuAlCl.sub.4 in the solid state, in solution or in a slurry. H.sub.2 S is recovered by subjecting the complex addition compounds to some combination of temperature and hydrogen sulfide partial pressure as to break up the complexes and to evolve the hydrogen sulfide content of the complex as a gas stream.

REFERENCES:
patent: 3754047 (1973-08-01), Long et al.
patent: 3927176 (1975-12-01), Turnbo et al.
patent: 4141960 (1979-02-01), Long et al.

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