Suspension deaerating process

Details Suspension deaerating process Suspension deaerating process

1990-05-11

1993-02-16

Bascomb, Jr., Wilbur

Gas separation

Means within gas stream for conducting concentrate to collector

55 46, 55 48, 55 49, 55 55, 159 21, 159 471, 159DIG31, 162 46, 162 53, 203 42, 203 88, 210634, B01D 1900

Patent

active

051867265

ABSTRACT:
A method and apparatus for deaerating a suspension of solids in a liquid such as, for instance, papermaking stock. The suspension is flashed in a vacuum tank connected to a condenser. The vapor released when the suspension is flash cooled in the tank is condensed into an absorption liquid having a higher temperature but a lower vapor pressure than that of the released vapor on a heat exchange surface of the condenser. The flash cooled suspension is used as the cooling medium in the condenser. The diluted absorption liquid is regenerated in an evaporator and recirculated to the condenser. The vapor released in the evaporator can be condensed to heat the suspension further or for other suitable heating purposes.

REFERENCES:
patent: 1401101 (1921-12-01), Ehrhart
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patent: 4295864 (1981-10-01), Rudolph et al.
patent: 4402795 (1983-09-01), Erickson
patent: 4670027 (1987-06-01), Becker et al.
patent: 4696718 (1987-09-01), Lasater
patent: 4754613 (1988-07-01), Brito

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