Vapor recovery system

Details Vapor recovery system Vapor recovery system

1989-12-11

1991-01-08

Bennet, Henry A.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

62 502, 62 18, 34 27, 34 74, 34 79, 34 80, F26B 2106

Patent

active

049825127

ABSTRACT:
A solvent recovery system comprises a flotation-type coating oven for evaporating solvent from a coating on a film, the oven including a bed of nitrogen vapor for supporting the film and discharging a vapor stream including the nitrogen vapor and the solvent vapor. A vapor phase molecular sieve means dries the vapor stream from the oven and discharges a dried vapor stream. Condensation-type solvent recovery heat exchangers condense the solvent vapor in the dried vapor stream from the sieve and discharge nitrogen vapor and liquid solvent separately. A cryogenic vaporizer converts liquid nitrogen to nitrogen vapor with heat from a heat exchange fluid in heat exchange relationship with the liquid nitrogen. The heat exchange fluid from the vaporizer passes through the solvent recovery heat exchangers in heat exchange relationship with the dried vapor stream therein to cool the same.

REFERENCES:
patent: 3714719 (1973-02-01), Wayne
patent: 4053990 (1977-10-01), Bielinski
patent: 4150494 (1979-04-01), Rothchild
patent: 4295282 (1981-10-01), Fox
patent: 4370357 (1983-01-01), Swartz
patent: 4466202 (1984-08-01), Merten
patent: 4469720 (1984-09-01), Morris
patent: 4475293 (1984-10-01), Banerjee

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