Cleaning method using a solvent while preventing discharge of so

Details Cleaning method using a solvent while preventing discharge of so Cleaning method using a solvent while preventing discharge of so

1989-09-25

1991-09-24

Chaudhuri, Olik

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

134 12, 34 15, 34 37, B08B 704, F26B 504

Patent

active

050511351

ABSTRACT:
A cleaning method and cleaning system using an organic solvent such as Freon. A cleaning tank is closed after an article to be cleaned is placed within the cleaning tank. The solvent is supplied to the cleaning tank from a solvent storage tank. The article is cleaned with the supplied solvent. After the cleaning, the solvent is discharged in liquid state from the cleaning tank while vapor of the solvent which remains in the cleaning tank is discharged to a condenser to condense the vapor. The condensed solvent is returned from the condenser into the solvent storage tank. After the liquid solvent and vapor solvent are discharged from the cleaning tank, the cleaned article is taken out from the cleaning tank. The condenser is incorporated in a distiller. A solvent vapor supplying unit is connected to the cleaning tank. The thus provided closed system prevents release of Freon to the atmosphere.

REFERENCES:
patent: 3011924 (1961-12-01), Rand
patent: 3078860 (1963-02-01), Rand
patent: 4101340 (1978-07-01), Rand
patent: 4339283 (1982-07-01), McCord
patent: 4755261 (1988-07-01), McCord
patent: 4822429 (1989-04-01), McCord

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