Process for the purification of inert gases

Details Process for the purification of inert gases Process for the purification of inert gases

1995-11-16

1997-03-18

Langel, Wayne

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Organic component

423351, 528272, 528274, B01J 800

Patent

active

056120117

ABSTRACT:
Process for the purification of an inert gas recycled from a solid state polycondensation (SSP) reactor of aromatic polyester resins, comprising the step of adding the gas with oxygen or gas containing oxygen in stoichiometric quantity or in such an excess that the gas at the outlet of the catalytic bed contains no more than 250 ppm of oxygen, circulating the gas on a catalytic bed comprising Pt or Pt and Pd heated at temperatures from 250.degree. to 600.degree. C. and recycling the gas to SSP reactor with previous drying to eliminate the water formed in the oxidation stage.

REFERENCES:
patent: 2756121 (1956-07-01), Grimes
patent: 4919903 (1990-04-01), Gandhi et al.
Derwent Abstract week 8711; Class E36, AN 87-073107 & DD-A-240 672 (Veb Leuna-Werk Ulbricht.
Abstract: Database WPI, Section Ch, Week 8711, Derwent Publications, Inc. (London, GB), AN 87-073107 & DD,A,240 672 (Veb Leuna-Werk Ulbricht).

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