Downflow evaporator

Details Downflow evaporator Downflow evaporator

1982-02-11

1983-11-15

Garris, Bradley

Concentrating evaporators

Film type

Moving film

159 27D, 159 431, B01D 110, B01D 122, B01D 130

Patent

active

044154070

ABSTRACT:
A downflow evaporator for concentrating a descending stream of liquid containing solids comprises a bundle of downflow tubes having open upper ends affixed to an upper tube sheet and open lower ends affixed to a lower tube sheet, the tubes receiving the stream of liquid through the upper ends and discharging it through the lower ends. The liquid is caused to cascade over the entire surface of the upper tube sheet whereby the liquid is distributed thereover and over the open upper tube ends. A covering is placed over the upper end of each downflow tube and spaced therefrom so as to prevent the liquid from dripping into the central portion of the tube whereby the stream of liquid descends peripherally along the inner surface of the tube.

REFERENCES:
patent: 491659 (1893-02-01), Lillie
patent: 1557838 (1925-10-01), Hiller
patent: 2753932 (1956-07-01), Eckstrom et al.
patent: 2764233 (1956-09-01), Skinner
patent: 2949935 (1960-08-01), Edmonds
patent: 3351119 (1967-11-01), Rosenblad
patent: 3412778 (1968-11-01), Witt et al.

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