Process for removing sulfur dioxide from gas streams

Details Process for removing sulfur dioxide from gas streams Process for removing sulfur dioxide from gas streams

1974-12-16

1976-10-26

Granger, Theodore A.

Gas separation

Means within gas stream for conducting concentrate to collector

55 62, 55 73, B01D 5304

Patent

active

039881296

ABSTRACT:
In the prevention of atmospheric pollution by sulfur dioxide emissions from acid absorbers in contact process sulfuric acid plants in which the unconverted SO.sub.2 is accumulated by adsorption in a zeolite adsorbent bed and desorbed back into the acid production system, it is found that ambient moist air, after partial dehydration in an acid scrubber is suitably used both to cool down and hot purge desorb the zeolite beds. In addition the pure water derived from the ambient air is advantageously used in the acid-making system.

REFERENCES:
patent: 3511027 (1970-05-01), Roberts et al.
patent: 3712027 (1973-01-01), Hasz
patent: 3713272 (1973-01-01), Barrere, Jr.
patent: 3772854 (1975-11-01), Tamura
patent: 3808773 (1974-05-01), Reyhing et al.
patent: 3829560 (1974-08-01), Fornoff et al.
patent: 3836630 (1974-09-01), Noguchi et al.

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