Method and apparatus for removing volatile contaminants from...

Details Method and apparatus for removing volatile contaminants from... Method and apparatus for removing volatile contaminants from...

B - Operations, Transporting

01

D

B01D 53/68 (2006.01) B01D 53/14 (2006.01) B01D 53/64 (2006.01) B01D 53/96 (2006.01)

Patent

CA 2712993

A method and apparatus for simultaneously removing alkali chlorides from an industrial process and purifying vaporizable contaminants such as mercury from a particulate material. Gases containing alkali chlorides are cooled to a temperature above the boiling point of the contaminants and below the boiling point of the alkali chlorides. Particulates rich in alkali chlorides are removed from the gas stream with a first dust collector. The gas stream cleaned of alkali chlorides is directed to a reaction area where particulate material containing mercury contaminants is inserted into the gas stream to vaporize the contaminants from the material and entrain the cleaned material in the gases. The gases are directed to a second dust collector to remove the entrained particulate material, after which a sorbent or chemical reagent is injected in the gases to interact with the contaminants and form a contaminant containing product that is entrained in the gases and thereafter separated from the gases.

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