Prozess zur Abtrennung von 1,1,1,2-Tetrafluorethan aus Gemischen desselben mit Fluorwasserstoff und/oder 1-Chlor-2,2-difluorethylen

• Main Authors: TAYLOR, ANDREW MARK, HUNTINGDON, CHESTER CH3 6DY, GB, WHEELHOUSE, ROBERT WILLIAM, CHESHIRE WA7 4AL, GB
• Format: Patent
• Language: German
• Published: 16.02.1995
• Edition: 6
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; ORGANIC CHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

A method for separating HFA 134a from an HFA 134a-rich mixture thereof with HF and/or CFC 1122 which comprises feeding the mixture to a distillation column to separate an azeotrope or near-azeotrope of HFA 134a and HF and/or CFC 1122 from a residue comprising substantially pure HFA 134a. Starting fr...