Falling film evaporator

Details Falling film evaporator Falling film evaporator

1977-02-04

1979-05-15

Yudkoff, Norman

Concentrating evaporators

Film type

Moving film

159 2R, 159 27D, F25J 106

Patent

active

041546423

ABSTRACT:
A falling-film evaporator is provided with improved means for uniformly supplying liquid to the heating tubes thereof. The means includes an arrangement whereby a substantially constant-level head of liquid is formed upon the upper tube sheet above which the heating tubes project so that the vapor can pass directly into the open ends of these tubes, the liquid being introduced into lateral openings of constant cross section for each of the tubes below the level of liquid standing on the upper tube sheet. An annular gap surrounding the array of tubes projecting upwardly from the upper tube sheet serves to feed the liquid phase to the standing liquid upon the tube sheet and the substance to be evaporated is introduced into a chamber above the upper tube sheet and is expanded therein to the pressure of the vaporator. The vapor phase passes through the open upper ends of the tubes.

REFERENCES:
patent: 1005553 (1911-10-01), Kestner
patent: 3016067 (1962-01-01), Edmonds
patent: 3132064 (1964-05-01), Scheffers

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