Process for the treatment of material-gas mixtures

Details Process for the treatment of material-gas mixtures Process for the treatment of material-gas mixtures

1990-01-29

1991-05-21

Hart, Charles

Gas separation

Means within gas stream for conducting concentrate to collector

55 52, 55199, 55203, B01D 1900

Patent

active

050171984

ABSTRACT:
The invention relates to processes for the treatment of in particular medium and highly consistent material-gas mixtures to be pumped, preferably gas-containing, in particular air-containing fibrous material suspensions, a separation of the gas being effected prior to the pumping operation. The invention is mainly characterized in that the material-gas mixture, preferably the gas-containing fibrous material suspension, is subjected in a separate container separate from the pump housing for the separate gas separation, in particular air separation, preceding the pumping operation, to a conveniently high-speed rotation of in particular between 1,200 and 3,400 rpm, preferably of about 3,000 rpm, while at least in operation, gas, in particular air, is sucked off or a vacuum is generated approximately in the center of the rotating motion of the material-gas mixture. The invention further relates to plants and devices e.g. suitable for carrying out these processes. Conveniently, separate housings are provided for the degassing device and the pump.

REFERENCES:
patent: 2849930 (1958-09-01), Freeman et al.
patent: 4201555 (1980-05-01), Trach
patent: 4326863 (1982-04-01), Day et al.
patent: 4362536 (1982-12-01), Gullichsen
patent: 4410337 (1983-10-01), Gullichsen et al.
patent: 4435193 (1984-03-01), Gullichsen et al.
patent: 4640771 (1987-02-01), Whalen et al.
patent: 4645600 (1987-02-01), Filippi
patent: 4776758 (1988-10-01), Gullichsen
patent: 4832709 (1989-05-01), Nagyszalanczy

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