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1. (WO2017069677) METHOD FOR DEGASSING LIQUID MIXTURES WITH LOW BOILING POINTS IN CLOSED SYSTEMS

Pub. No.:    WO/2017/069677    International Application No.:    PCT/SE2016/050979
Publication Date: Fri Apr 28 01:59:59 CEST 2017 International Filing Date: Wed Oct 12 01:59:59 CEST 2016
IPC: F25B 43/04
B01D 3/06
B01D 3/10
B01D 19/00
F24D 19/08
F25J 3/06
Applicants: QTF SWEDEN AB
Inventors: CARLSSON, Björn
Title: METHOD FOR DEGASSING LIQUID MIXTURES WITH LOW BOILING POINTS IN CLOSED SYSTEMS
Abstract:
Method for degassing certain compounds in liquid mixtures with low boiling point in closed liquid systems, wherein a part of the liquid is isolated for degassing and wherein degassed liquid is restored to the closed system. The invention is characterised in that a part of the liquid mixture is diverted from the closed system (1), lowered in pressure by a vacuum control valve (3), brought to a degassing tank (4) in which the liquid is degassed, in that a first pump (6) after the degassing tank increases the pressure of a smaller part of the diverted liquid and gas to a sufficient pressure for certain compounds to dissolve in the liquid while other compounds remain in gas phase, in that the first pump (6) pumps the liquid and gas from the degassing tank (4) to a deairing tank (7) comprising a deairing valve (8) through which valve separated gas flow out to the environment and in that the liquid flows back to the closed system.