Concentrating evaporators – Closed evaporating chambers – Indirectly heated
Patent
1976-08-05
1978-09-12
Emery, Stephen J.
Concentrating evaporators
Closed evaporating chambers
Indirectly heated
23295R, 422245, B01D 130, B01D 902
Patent
active
041135520
ABSTRACT:
The transfer of agitational forces from a main vessel to an elutriation leg connected thereto is effectively minimized with a slurry inlet and liquor outlet device mounted in the upper end of the elutriation leg. The device includes a slurry flow directing member which receives the gravitational flow of slurry from the main vessel and directs such flow in a downward path of reduced cross-sectional area with respect to the cross-sectional area of the elutriation leg for impingement onto a target member mounted below the slurry flow directing member. The downward slurry flow is radially outwardly deflected by the target member to substantially reduce the concentrated downward forces of the slurry which would otherwise tend to disrupt or restrict the formation and maintenance of a fluidized bed in the elutriation leg. The upward flow of elutriating liquor through the leg exits through liquor flow apertures or passages which can have baffle members operatively associated therewith for preventing short circuited slurry flow therethrough.
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Bella, Jr. Frank
Bennett Richard C.
Emery Stephen J.
Whiting Corporation
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