Concentrating evaporators – Film type – Moving film
Patent
1973-12-18
1976-07-20
Sofer, Jack
Concentrating evaporators
Film type
Moving film
159 29, 159 49, 159 16A, 159DIG6, 159DIG15, 159DIG19, 23275, 23307, 423529, 423531, B01D 114, B01D 122, B01D 102, C01B 1790
Patent
active
039705110
ABSTRACT:
Dilute solutions of corrosive products, such as sulphuric or phosphoric acid, are concentrated by pre-concentrating the dilute solution and then introducing the pre-concentrated solution into a tunnel in which it flows in a thin layer over successive cascades while being heated, preferably by indirect radiant heating. An installation for carrying out the process is also described.
REFERENCES:
patent: 339552 (1886-04-01), Hughes
patent: 548303 (1895-10-01), Dyson
patent: 573219 (1896-12-01), Haubtman
patent: 699011 (1902-04-01), Quinan
patent: 1263950 (1918-04-01), Slater
patent: 2486684 (1949-11-01), Schlesman et al.
patent: 2527410 (1950-10-01), Fleischer
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patent: 3221711 (1965-12-01), Beggs
patent: 3294650 (1966-12-01), Manteufel
patent: 3353920 (1967-11-01), Kitzen
Patouillet Jean J.
Pollozec Francois A.
Rat Roger M.
Societe Nationale des Poudres et Expolsifs, Antar Petroles de
Sofer Jack
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