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JP2013017930A Method for improving voc recovery rate in low-temperature liquefied voc recovery method by moisture removal and cold heat recovery using adsorbent 审中-公开
标题翻译：通过水分去除和冷热回收利用吸附剂改善低温液化VOC回收方法中的VOC回收率的方法
公开(公告)号：JP2013017930A
公开(公告)日：2013-01-31
申请号：JP2011151691
申请日：2011-07-08
申请人： Kyuchaku Gijutsu Kogyo Kk , 吸着技術工業株式会社
发明人： IZUMI JUN , O KOKO , TAZOE MINORU , IDETA YUSUKE
IPC分类号： B01D53/72 , B01D53/02 , B01D53/04 , B01D53/26 , B01J20/18 , B01J20/20 , B01J20/34
CPC分类号： Y02A50/235
摘要： PROBLEM TO BE SOLVED: To provide a VOC recovery method which uses an adsorbent and has a high recovery rate by low-temperature VOC concentration following moisture removal.SOLUTION: The VOC recovery method includes: pressurizing and introducing air containing VOC and moisture to a moisture selection-type adsorbent adsorption tower to remove the moisture; liquefying and recovering VOC at low temperature; recovering cold heat from low-temperature dry air after the VOC recovery; and decompressing the moisture-adsorbed moisture selection-type adsorbent adsorption tower by use of the dry air as countercurrent purge gas to detach the moisture. Coadsorbed VOC which is desorbed from the moisture adsorbent in an early stage of a regeneration step of the moisture adsorption tower is adsorptively removed in an installed VOC adsorption tower, and the adsorbed VOC is desorbed by carrying air in a countercurrent direction from the rear of the tower in the remaining time and refluxed to the inlet of the moisture adsorption tower in an adsorption step, whereby the VOC recovery rate is improved. The VOC adsorbent being used is a VOC adsorbent using, singly or in combination, high silica zeolite, mesoporous silica and activated charcoal.
摘要翻译：要解决的问题：提供使用吸附剂的VOC回收方法，并且在去除湿气后通过低温VOC浓度具有高回收率。解决方案：VOC回收方法包括：将含有VOC和水分的空气加压并引入水分选择型吸附塔，去除水分; 在低温下液化和回收VOC; VOC回收后从低温干燥空气中回收冷热; 并且通过使用干燥空气作为逆流吹扫气体来减压吸湿水分选择型吸附塔，以分离水分。在安装的VOC吸附塔中吸附除去在水分吸附塔的再生步骤的早期阶段从水分吸附剂中脱附的共吸附VOC，并且通过沿着逆流方向从空气的背面携带空气解吸吸附的VOC 塔在剩余时间内并在吸附步骤中回流到吸湿塔的入口，从而提高VOC回收率。使用的VOC吸附剂是单独或组合使用高二氧化硅沸石，介孔二氧化硅和活性炭的VOC吸附剂。版权所有（C）2013，JPO＆INPIT

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