Apparatus for pumping gas-containing fiber suspensions
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United States of America Patent
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Jan 27, 1998
Issued Date -
N/A
app pub date -
Oct 13, 1993
filing date -
Sep 25, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a method and an apparatus for separating gas from solids-containing liquid. The apparatus in accordance with the invention may be applied in such places where air is separated from a medium by means of reduced pressure or vacuum condition. The apparatus in accordance with the present invention is especially applicable for the pulp and paper industry in situations where gas has been separated from the fiber suspension, but where the gas contains some fibers or other solids, which must be separated from the gas flow prior to the vacuum pump generating suction. The method in accordance with the present invention is characterized in that the fraction containing gas, liquid and solid material is passed from the pulp treatment apparatus to a separate separating apparatus, solids are separated from that fraction, which are then discharged from the separation apparatus. A gas or gas-liquid solution is guided to the vacuum apparatus and the gas or gas-liquid solution is discharged from the system. The apparatus in accordance with the present invention consists of a separating apparatus with a separation chamber having an impeller and a vacuum apparatus, which are separate from a centrifugal pump for pumping the medium.
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