B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
23/356.5
B01D 53/12 (2006.01) B01D 53/64 (2006.01)
Patent
CA 1141523
ABSTRACT A method of highly efficiently separating preferably low contents of gaseous mercury from a gas mixture, where the gas mixture is caused to contact a solid sorbent consisting of powdered calcium hydroxide, which in an atmosphere containing hydrogen chloride is to a certain part converted to calcium chloride. The temperature of the gas mixture is between 80°C. and 280°C. The contact between the gas and the sorbent preferably takes place in a fluidized bed, whereafter the sorbent is separated in a dust separator. The method is suitable for use at the separation of mercury occurring in flue gases, for example from refuse incin- erators or in mercury-containing gases from process industries. At experiments with flue gas from a refuse incinerator the mercury content was reduced from 200 to 5µg of gaseous mercury/cubic metre flue gas.
343313
Flakt Aktiebolag
Gowling Lafleur Henderson Llp
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