SUB-ATMOSPHERIC PRESSURE GAS SCRUBBERS

Title:

SUB-ATMOSPHERIC PRESSURE GAS SCRUBBERS

Document Type and Number:

WIPO Patent Application WO/2013/014421

Kind Code:

A3

Abstract:

In order to minimise the amount of contaminants that pass through a pump, or that are allowed to accumulate therein, a sub-atmospheric pressure gas scrubber (100) suitable for use upstream of a vacuum pump is provided. The gas scrubber comprising a vessel (12) and means (22) for forming a spray of cleaning solvent within the vessel, the vessel comprising an inlet (14) and an outlet (18) for the gas to be cleaned at sub atmospheric pressure, the inlet and outlet being arranged to cause the gas to be cleaned to pass through the spray of cleaning solvent, the means for forming a spray comprising a cleaning solvent inlet (24) connected to at least one spray nozzle (22) and a cleaning solvent outlet (28) through which used solvent can be pumped from the vessel using a pump, wherein the pump (102) is arranged to recirculate the used solvent back to the cleaning solvent inlet.

Inventors:

RANA MANILAL GORDHANDAS (GB)
COLLINS DONOVAN (GB)

Application Number:

PCT/GB2012/051584

Publication Date:

March 21, 2013

Filing Date:

July 06, 2012

Export Citation:

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Assignee:

EDWARDS LTD (GB)
RANA MANILAL GORDHANDAS (GB)
COLLINS DONOVAN (GB)

International Classes:

F04F9/00; B01D53/18

Domestic Patent References:

WO2009014285A1	2009-01-29
WO1998001214A1	1998-01-15

Foreign References:

US3091513A	1963-05-28
US6667419B1	2003-12-23
BE536896A
US6007604A	1999-12-28
US20100230830A1	2010-09-16
US20080174032A1	2008-07-24

Other References: