Method for collecting volatile organic substances

申请公布号：: US5702505(A)
申请号：: US19960646488
申请日期：: 1996.05.08
申请公布日期：: 1997.12.30
申请人：: MITSUBISHI JUKOGYO KABUSHIKI KAISHA
发明人：: IZUMI, JUN;YASUTAKE, AKINORI;TSUTAYA, HIROYUKI;HARADA, TAKAYUKI;HAMADA, KENICHI
分类号：: B01D53/44;B01D53/04;B01D53/047;B01D53/06;B01D53/26;B01D53/81;(IPC1-7):B01D53/04
主分类号：: B01D53/44
摘要：: A method for collecting volatile organic substances from an off-gas containing moisture and volatile organic substances. The organic substances are removed from the gas containing the organic substances and the moisture by introducing the gas into an adsorbing tower filled with the adsorbents and being in the adsorbing process under a relatively low temperature condition. The gas is discharged outside the system as the gas containing the moisture but from which the organic substances have been removed. The organic substances are desorbed under a relatively high temperature condition in the regenerating process for the regeneration. The moisture is removed from the desorbed gas discharged from the adsorbent regenerating process in a dehumidifying tower filled with the moisture absorbent by the temperature swing method or pressure swing method. The obtained dry gas containing a high concentration of organic substances is introduced into a liquefier to be cooled and/or pressurized and to be liquefied so that the organic substances are collected. It is therefore possible to collect the organic substances at a high concentration magnification rate without degrading the organic substances and the adsorbents.