Spent solvent recovery in circuit processing

Details Spent solvent recovery in circuit processing Spent solvent recovery in circuit processing

1989-10-02

1991-05-21

Woo, Jay H.

Gas separation

Means within gas stream for conducting concentrate to collector

55355, 55466, 137132, 137171, 137177, 137187, B01D 5300

Patent

active

050171992

ABSTRACT:
The invention provides an apparatus and method for removing spent solvent from manufacturing apparatus during operation. The apparatus uses a collection housing having input, exhaust, and output ports with U-shaped output transfer tubing positioned inside the housing and connected on one end to the output port. The output tubing arches upward inside the housing and has a tapered opening positioned near the bottom of the housing. Negative pressure is applied to the exhaust port to move cleaned air out of the housing and solvent laden air into the housing through the input port. Solvent precipitates from the air and collects as a liquid in the housing until the liquid level rises above the arched bottom of the transfer tubing. At this point, the solvent flows through the tubing and the output port, and out of the housing under the influence of gravity at atmospheric pressure. In further embodiments, a liquid level indicator using translucent is secured between a pair of access ports extending outward from a sidewall of the housing.

REFERENCES:
patent: 541277 (1895-06-01), Hornig
patent: 2626006 (1953-01-01), Anderson
patent: 3216663 (1965-11-01), Frampton et al.
patent: 3422608 (1969-01-01), Hubbard
patent: 3933449 (1976-01-01), Miselem
patent: 4846206 (1989-07-01), Peterson

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