B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
23/348, 23/358
B01D 53/34 (2006.01) B01D 53/68 (2006.01) B01D 53/86 (2006.01)
Patent
CA 2001002
A PROCESS FOR THE REMOVAL OF SULFUR DIOXIDE AND HYDROGEN CHLORIDE FROM HOT GASES ABSTRACT OF THE DISCLOSURE In the removal of sulfur dioxide and hydrogen chloride from waste gases with simultaneous production of sulfuric acid and hydrochloric acid, in which SO2 is catalytically oxidized to H2SO4 on moist active carbon and washed out as thin acid with water, the improvement which comprises concentrating the accumulating mixture of thin hydrochloric and sulfuric acid by evaporation of water and hydrogen chloride in the hot waste gas stream to a 40 to 80 Y. concentrated sulfuric acid, corresponding to the HCl- H2SO4-water equilibrium.
Engels Hans
Klaumann Karl-Heinz
Soppe Alfred
Aktiengesellschaft Bayer
Engels Hans
Fetherstonhaugh & Co.
Klaumann Karl-Heinz
Soppe Alfred
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