B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
166/3, 23/349
B01D 53/34 (2006.01) B01D 47/00 (2006.01)
Patent
CA 1077240
ABSTRACT The invention is concerned with improved process and apparatus for the removal of sulphur dioxide from flue gas or other waste gas of the kind in which the waste gas is is scrubbed by a circulating wash liquid containing lime suspensions, i.e. suspensions of calcium oxide, hydroxide or carbonate, the the calcium/sulphur compounds so formed being oxidised and removed from the circulation, the improvements of the present invention comprising primarily the freeing of the wash liquid from solid matter before contact with the waste gas and then the control of pH values of the wash liquid at different stages of the circulation to facilitate for example the oxidation of the particular calcium/sulphur compound, formed In the scrubbing process, to calcium sulphate, the apparatus also being designed to improve the oxidation step.
235756
Gresch Heinz
Holter Heinz
Igelbuscher Heinrich
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