Concentrating sodium or potassium hydroxide

Details Concentrating sodium or potassium hydroxide Concentrating sodium or potassium hydroxide

1974-12-10

1976-12-14

Sofer, Jack

Concentrating evaporators

Processes

Film

159 13A, 159 17VS, 159 27D, 159 46, B01D 100, B01D 122

Patent

active

039973891

ABSTRACT:
Method of concentrating sodium or potassium hydroxide liquids by means of a heated evaporator whereby for a preliminary pre-evaporation of the liquid to be concentrated the liquid is first of all heated by direct contact with the superheated evaporation vapors issuing from the evaporator; a suitable apparatus for this method is disclosed which comprises an evaporator and a pre-evaporator this arranged at the upstream side of the evaporator and heated by direct contact with the evaporation vapors issuing from the evaporator.

REFERENCES:
patent: 1597809 (1926-08-01), Lavett
patent: 1883211 (1932-10-01), Wilson
patent: 2467529 (1949-04-01), Hormel
patent: 2519618 (1950-08-01), Wilson et al.
patent: 2562495 (1951-07-01), Hulme
patent: 2698779 (1955-01-01), Adams et al.
patent: 2758061 (1956-08-01), Geller
patent: 2823742 (1958-02-01), Ludin et al.
patent: 3131110 (1964-04-01), Duval
patent: 3147174 (1964-09-01), Cook
patent: 3370635 (1968-02-01), Kumm
patent: 3380806 (1968-04-01), Bradbury et al.
patent: 3872910 (1975-03-01), Kuhnlein

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