Evaporating apparatus and process

Details Evaporating apparatus and process Evaporating apparatus and process

1976-02-04

1977-08-09

Yudkoff, Norman

Concentrating evaporators

Closed evaporating chambers

Indirectly heated

159 47R, B01D 106

Patent

active

040408981

ABSTRACT:
A vertical tube evaporator is disclosed comprised of two sets of tubes, one set forming an upflow zone and the other set forming a downflow zone. The liquid to be treated comprised of fresh feed and a recirculating liquid stream is introduced into the upflow zone at an initial velocity of about 0.5 feet per second based on the cross-section area of the tubes. The vapor-liquid stream withdrawn from the first set is then passed through a distribution plate having orifices aligned with the tubes in the second set and of smaller diameter prior to passage thereof through the second set of tubes. The condition of the vapor-liquid stream between the sets of tubes is visually observed to permit adjustment of initial flow rate to the first set of tubes of the evaporator for optimization of heat transfer coefficients.

REFERENCES:
patent: 2257531 (1941-09-01), Peebles
patent: 2624401 (1953-01-01), Schilt
patent: 2732008 (1956-01-01), Seeley
patent: 2741303 (1956-10-01), Bergstrom
patent: 3075578 (1963-01-01), Sumiya

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