Sulfur recovery process using metal oxide absorbent with improve

Details Sulfur recovery process using metal oxide absorbent with improve Sulfur recovery process using metal oxide absorbent with improve

1988-07-06

1989-10-03

Doll, John

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

423244, 423574R, C01B 1716, C01B 3120, C01B 1702

Patent

active

048715212

ABSTRACT:
Sulfur species are removed from a Claus plant tail gas stream by contacting with ZnO producing ZnS which is regenerated to ZnO by dilute O.sub.2. Following regeneration, fresh regenerated ZnO in one ZnO absorber is purged with an effective reducting gas stream producing SO.sub.2 emissions while another ZnO absorber is downstream operating under effective absorption conditions for removing thus produced SO.sub.2 from the first ZnO absorber effluent.

REFERENCES:
patent: 4533529 (1985-08-01), Lee

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