Cryogenic rectification system for fluorine compound recovery us

Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture

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62918, F25J 300

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056260237

ABSTRACT:
A cryogenic system for the recovery of fluorine compounds from a carrier gas stream such as an effluent stream from a semiconductor facility comprising combining the carrier gas feed stream with additive liquid to keep fluorine compounds from solidifying and to reduce the vapor pressure of the fluorine compounds, followed by separation and recovery using a cryogenic rectification column system.

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patent: 4484954 (1984-11-01), Tarancon
patent: 5201918 (1993-04-01), Vobach
patent: 5367881 (1994-11-01), Henzler

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