Method for treating gas streams
AssigneeEFB Inc.
InventorsJeffery C. Alexander, Karim Zahedi
Life of this patent
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Abstract
A gaseous constituent, such as sulfur dioxide, is removed from a gas stream in a granular bed filter containing granules coated with a sorbent material which is reactive with the gaseous constituent. Granules carrying reacted sorbent material are removed from the granular bed filter, cleaned of reacted sorbent material and coated with further sorbent material for reuse in the granular bed filter. Electrification of the filter bed permits simultaneous, highly efficient removal of particulates entrained in the gas stream.
Claims15
A metod of treating a gas stream containing a gaseous sulfur oxide constituent to be removed, comprising providing a granular bed filter, supplying to the bed of said filter granules of gravel having deposited thereon a coating of an alkali sorbent material reactive with said gaseous constituent, and passing said gas stream through said bed for contacting the gas stream with said sorbent material and for reacting said sorbent material with said gaseous constituent to substantially remove that constituent from said gas stream.
Dependencies are inferred from the claim text.