Method of cleaning humid air contaminated with vapour

Details Method of cleaning humid air contaminated with vapour Method of cleaning humid air contaminated with vapour

F - Mech Eng,Light,Heat,Weapons

24

F

162/129

F24F 3/14 (2006.01)

Patent

CA 1213208

ABSTRACT: "A method of cleaning humid air contaminated with vapour" A method of cleaning humid air contaminated with vapour, such as ventilation air from a rolling mill or the like, comprises the steps of cooling the air in one or more stages to a temperature below the condensation temperature of the contaminating vapour in the air, and below the dew point of water. The condensate is collected in such a way that the condensed vapour is substantially separated from the condensed water. The condensed vapour may then be re-used. The water, which may still be contaminated with a small proportion of the condensed vapour, is returned to the air to re- humidify the air. In a preferred embodiment the cooling is conducted in two stages, the initial stage condensing substantially only the vapour, and the second stage condensing the water together with a relatively small propor- tion of the vapour still remaining in the air. The condensate may be separated into two phases in a separation tank.

428533

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