Method and apparatus for purifying a gas stream in a sorption filter

US4516988A · kind A · utility

Assignee

• Rekuerator KG Dr.-Ing. Schack & Co. · DE

Inventor

• Karl Winter · Obertshausen, DE

Key dates

• Filing date: Aug 25, 1983
• Grant date: May 14, 1985
• Expiry date: Aug 25, 2003

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2259/4148
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Method for the purification of a gas stream loaded with organic gases or vapors, especially up to near the saturation limit, in a sorption filter, in which the gas stream loaded with organic gases or vapors is mixed with a gas conducted in a loop, and together with the latter is conducted through the sorption medium layer of the sorption filter, the volumetric flow of the circulating gas being larger than the volumetric flow of the gas to be purified. After the mixed gas stream is conducted through the sorption medium layer, a partial stream of the now purified gas is branched off and removed, where the volumetric flow of the branched-off gas corresponds to the volumetric flow of the gas to be purified and where the remainder of the purified gas is returned to the mixing point as circulating gas and is mixed there again with the gas to be purified.