04343691 is referenced by 26 patents and cites 6 patents.

A hot aqueous waste, containing solids, such as tailings from the hot water extraction of bitumen from tar sands, is contacted with air to increase the heat and moisture content of the air, followed by contacting the heated and moisturized air with water to condense moisture from the air and increase the heat content of the water, with the heated water containing condensed moisture being employed as make-up hot water in the extraction. Water recovery can be further increased by subjecting at least a portion of the tailings, prior to contact with air, to an evaporation procedure wherein heat requirements are provided by indirect heat transfer with steam. Evaporate and condensed steam are employed in the extraction.

Title
Heat and water recovery from aqueous waste streams
Application Number
92908
Publication Number
4343691
Application Date
March 5, 1981
Publication Date
August 10, 1982
Inventor
Ari A Minkkinen
Versailles
FR
Agent
James N Blauvelt
Assignee
The Lummus Company
NJ, US
IPC
C10G 1/04
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