Conditioning drum for a tar sands hot water extraction process

Details Conditioning drum for a tar sands hot water extraction process Conditioning drum for a tar sands hot water extraction process

C - Chemistry, Metallurgy

10

G

196/17

C10G 1/04 (2006.01)

Patent

CA 1134309

ABSTRACT OF THE DISCLOSURE The thermodynamic efficiency of a tar sands condition- ing drum is improved by continuously and simultaneously dis- charging steam from all the nozzles of an array of a few relatively large nozzles distributed circumferentially around the inner drum periphery rather than selectively sparging the steam only from those nozzles beneath the tar sands pulp sur- face. As a result, the drum shell and components above the pulp are heated and thus heat the pulp by radiation and, after entering the pulp, by convection as well as by sparging. Hot water droplets formed continuously in the steam cloud rain onto the pulp surface to provide another highly important heat transfer mechanism. Coincidentally, mechanical reliability and economics are achieved by eliminating the sparge valve and multiplicity of smaller nozzles which characterize the prior art tar sands conditioning drums.

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