Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1982-11-05
1984-03-06
Spitzer, Robert H.
Gas separation
Means within gas stream for conducting concentrate to collector
55 52, 55190, 55203, 55409, 162 55, B01D 1900
Patent
active
044351933
ABSTRACT:
The operation of a centrifugal pump which pumps a liquid or suspension (e.g. 8-12 percent consistency) containing gas is controlled to minimize pump power consumption, or to vary the pump flow rate. The suspension is rotated within the pump so that a gas bubble is created at a central part of the pump, and gas is discharged from the gas bubble, at a gas discharge pressure. The differential pressure between the suspension inlet and the gas discharge is determined, and the head and/or discharge flow rate of the pump are controlled by controlling the differential pressure so determined. The discharge flow rate may be maintained constant utilizing a control valve and flow meter in the pump discharge line, in which case controlling the discharge of gas from the gas bubble controls the head, and minimizes power consumption for a given flow rate. Alternatively the flow rate is controlled by controlling the gas discharge, with no control valve in the pump discharge line being provided.
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Gullichsen Johan E.
Harkonen Esko
Kujala Jaakko
Niskanen Toivo
Reponen Voitto
Kamyr AB
Spitzer Robert H.
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