Process and installation for desulphurizing gases containing SO.

Details Process and installation for desulphurizing gases containing SO. Process and installation for desulphurizing gases containing SO.

1976-10-12

1981-08-11

Peters, G. O.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423244, 423 76, 55 73, C01B 5334

Patent

active

042833809

ABSTRACT:
In a process for desulphurizing gases containing SO.sub.2 and SO.sub.3 by absorption of the sulphur containing compounds by means of absorbents based on alumina free of alkaline substances, activated alumina or alumina carrying salts or oxides of at least one element selected from the groups IB, IIB, IVB, VB, VIB, VIIB, VIII of the Periodic Classification, the absorption takes place at temperatures comprised between 100.degree. and 400.degree. C., and the absorbent loaded with said compounds in the form of sulphates is heated with a gas containing a reducing gas, especially H.sub.2 S, to a temperature of 250.degree. C. to 450.degree. C., while the elementary sulphur thus formed is separated from said absorbent, whereafter the latter is re-used in a subsequent absorption operation.

REFERENCES:
patent: 1836357 (1931-12-01), Benner et al.
patent: 2747968 (1956-05-01), Pigache
patent: 2992884 (1961-07-01), Bienstock
patent: 3755535 (1973-08-01), Naber
patent: 3917799 (1975-11-01), Torrence
patent: 4008169 (1977-02-01), McGauley
patent: 4014982 (1977-03-01), Paull et al.
Pearson, M. J.; "Catalysts for Claus Process" Kaiser Aluminum & Chem. Corp.; 1972 pp. 14-15.

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