-
公开(公告)号：US06197091B1
公开(公告)日：2001-03-06
申请号：US09263614
申请日：1999-03-05
IPC分类号： B01D5322
CPC分类号： B01D53/228 , B01D53/229 , C01B13/10 , C02F1/78
摘要： An ozone-oxygen gas stream produced by passing oxygen into an ozone generator is introduced into a membrane separation unit containing an ozone-permeable membrane. Ozone-enriched gas passes through the membrane and is recovered or it contacts a liquid or gas stream which contains ozone-reactive substances, thereby oxidizing the substances. The oxygen-enriched gas stream produced on the feed side of the membrane by permeation of ozone through the membrane is recycled to the ozone generator. Prior to being recycled, the oxygen-enriched stream may be purified to remove gaseous impurities which permeate through the membrane from the liquid or gas stream being treated.
摘要翻译： 通过将氧气传递到臭氧发生器中产生的臭氧 - 氧气流被引入到含有臭氧渗透膜的膜分离单元中。 富含臭氧的气体通过膜并被回收或接触含有臭氧反应物质的液体或气体物流，从而氧化物质。 通过臭氧渗透膜在膜的进料侧产生的富氧气流再循环到臭氧发生器中。 在再循环之前，可以纯化富氧物流以除去从被处理的液体或气流中透过膜的气态杂质。
-
公开(公告)号：US06197268B1
公开(公告)日：2001-03-06
申请号：US09347316
申请日：1999-07-02
IPC分类号： C01B2100
CPC分类号： B01D53/8625 , B01D53/56 , B01D53/75
摘要： Nitrogen oxides are removed from a waste gas stream by contacting the waste gas stream with ammonia, thereby reducing the nitrogen oxides to nitrogen. Residual nitrogen oxides and unreacted ammonia in the waste gas stream leaving the nitrogen oxides reducing step are oxidized to nitrogen pentoxide or nitric acid by contacting this gas stream with ozone. Contact of the ozone and waste gas is preferably carried out in the presence of an aqueous solution at a pH above about 9 and at a temperature above about 75° C., and this step is preferably carried out in the presence of an ammonia-oxidizing catalyst.
摘要翻译： 通过使废气流与氨接触，从废气流中除去氮氧化物，从而将氮氧化物还原成氮气。 离开氮氧化物还原步骤的废气流中的残留的氮氧化物和未反应的氨通过使该气流与臭氧接触而氧化成五氧化二氮或硝酸。 臭氧和废气的接触优选在高于约9的pH高于约75℃的水溶液存在下进行，该步骤优选在氨氧化的存在下进行 催化剂。
-
公开(公告)号：US06190436B1
公开(公告)日：2001-02-20
申请号：US09263615
申请日：1999-03-05
IPC分类号： B01D5322
CPC分类号： B01D53/22 , B01D53/228 , B01D63/02 , B01D63/06 , B01D63/087 , B01D2313/18 , B01D2313/38 , C01B13/10 , C02F1/78
摘要： An ozone-oxygen gas stream is introduced into feed side of a membrane separation unit containing an elastomeric polymer membrane. Ozone-enriched gas passes through the membrane to a permeate zone and is contacted with an ozone-reactive substance-containing gas stream in the permeate zone, thereby oxidizing the substances or is removed from the permeate zone. Removal of the ozone-enriched gas from the permeate zone may be effected by purging the permeate zone with an inert gas and/or evacuating the permeate zone. Ozone-enriched gas removed from the permeate zone may be mixed with a liquid or gas stream which contains ozone-reactive substances in, for example, a venturi device, thereby oxidizing the substances.
摘要翻译： 将臭氧 - 氧气流引入含有弹性聚合物膜的膜分离单元的进料侧。 富含臭氧的气体通过膜进入渗透区，并与渗透区中的含臭氧反应性物质的气流接触，从而氧化物质或从渗透区除去。 可以通过用惰性气体清洗渗透区域和/或抽空渗透区域来实现从渗透区域去除富臭氧气体。 从渗透区域除去的富含臭氧的气体可以与在例如文丘里装置中含有臭氧反应性物质的液体或气体流混合，从而氧化物质。
-
-
搜索结果
3 条记录 (耗时 0.013 秒)
