Multistage molecular evaporator with wiped off film and continuo

Details Multistage molecular evaporator with wiped off film and continuo Multistage molecular evaporator with wiped off film and continuo

1980-11-10

1982-06-15

Yudkoff, Norman

Concentrating evaporators

Film type

Rotary drum or disk

159 12, 159 6W, 202173, 202187, B01D 122

Patent

active

043349528

ABSTRACT:
A liquid seal for a multistage molecular evaporator which is in the form of an elongated vessel having convex evaporating surfaces for carrying out a continuous redistillation. The evaporator includes at least two vacuum stages superposed one over the other in the vessel. The upper stage has two inwardly extending troughs one superposed over the other. An overflow tube extends from the upper trough into a collecting trough of the adjacent lower vacuum stage to form a first liquid seal. A collecting member in the upper stage extends into the lower trough of the upper stage to collect distillate therein and to form a second liquid seal therein. The upper and lower vacuum stages have evaporator bodies which are connected to each other by sealing means.

REFERENCES:
patent: 2078841 (1937-04-01), Fauth
patent: 2614973 (1952-10-01), Burrows
patent: 3434935 (1969-03-01), Habendorff et al.
patent: 4053006 (1977-10-01), Tkac et al.

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