B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/34 (2006.01) B01D 53/50 (2006.01) C01F 11/46 (2006.01)
Patent
CA 2083310
D-16836 REMOVAL OF SULFUR DIOXIDE FROM GAS STREAMS Abstract of the Disclosure Processes are provided for the removal of sulfur dioxide from gas streams using aqueous lime or limestone slurries containing an additive comprising an amine. The amines have an available alkalinity of at least 0.5 meq/gram at a pH between 3.0 and 5.5. The amines are highly soluble in the . slurry and can have a low volatility, thereby reducing amine losses with the gas product. Furthermore, amines which are absorbed on the calcium sulfate or calcium sulfite by-products can be recovered by water-washing with a water make-up stream. -26-
Chang John Chung-Shih
Hakka Leo Ernest
Roy Veronique
Sim & Mcburney
Union Carbide Chemicals & Plastics Technology Corporation
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