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

B - Operations, Transporting

01

D

183/30

B01D 53/04 (2006.01) C01B 17/60 (2006.01) C01B 17/76 (2006.01)

Patent

CA 1047414

PROCESS FOR REMOVING SULFUR DIOXIDE FROM GAS STREAMS ABSTRACT OF DISCLOSURE In the prevention of atmospheric pollution by sulfur dioxide emissions from acid absorbers in contact process sulfuric acid plants in which the unconverted SO2 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 cooldown 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. - 1 -

239515

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