Selectively recovering metal chlorides from gaseous effluent
AssigneeE. I. Du Pont de Nemours and Company
InventorsArnold William Kilgren, David Nicholson Low, Robert Warwick Porter
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Abstract
Process for selectively recovering metal chlorides from a gaseous mixture of metal chlorides by contacting the gaseous mixture at a temperature above the condensation point of the mixture with at least one stream of liquid to cool all the mixture to below the freezing point of at least one metal chloride in the mixture, the average velocity of the mixture being at least the pneumatic conveyance velocity at the point of contact. This process provides for recovery of metal chlorides without plugging the apparatus.
Claims7
In a process for recovering metal chlorides from a gaseous mixture consisting essentially of at least two gaseous metal chlorides,
- the improvement comprising contacting the gaseous mixture flowing through a transfer duct at a temperature above the condensation point of the gaseous mixture with at least one stream of liquid to rapidly cool substantially all of the gaseous mixture to a temperature below the freezing point of at least one of the metal chlorides in the gaseous mixture, the velocity of the gaseous mixture being at least the pneumatic conveyance velocity at the contact zone and the rate of cooling substantially all of the gaseous mixture being less than one second.
Dependencies are inferred from the claim text.