公开(公告)号：US06517801B2

公开(公告)日：2003-02-11

申请号：US09827223

申请日：2001-04-05

申请人： Richard William Watson ,  Stephen Rhys Graville ,  Vijay Ramanand Balse

发明人： Richard William Watson ,  Stephen Rhys Graville ,  Vijay Ramanand Balse

IPC分类号： B01D5348

CPC分类号： B01D53/526 ,  B01D53/1462 ,  C01B17/04 ,  Y02P20/152

摘要： A feed gas stream containing hydrogen sulphide is subjected in a furnace 6 to reactions in which part of the hydrogen sulphide is burned to form sulphur dioxide, and is which the sulphur dioxide reacts with residual hydrogen sulphide to form sulphur vapor. The sulphur vapor is condensed from the gas stream exiting the furnace 6 in a sulphur condenser 16. Residual sulphur dioxide is reduced back to hydrogen sulphide by hydrogen in a reactor 22. Water vapor is removed from the reduced gas in a quench tower 28 to form a water vapor-depleted gas stream. One part of the water vapor-depleted gas stream is sent to an adsorber vessel 30 in which hydrogen sulphide is absorbed in an absorbent. The resulting hydrogen sulphide-depleted gas stream is vented from the vessel 30 as a purge stream. Another part of the water vapor-depleted gas stream and a hydrogen sulphide-rich gas formed by desorbing hydrogen sulphide from the absorbent in a vessel 38 are returned as recycle streams to the furnace 6.

公开(公告)号：US5932509A

公开(公告)日：1999-08-03

申请号：US665714

申请日：1996-06-18

申请人： Vijay Ramanand Balse ,  Martin Bulow ,  Philip Connolly ,  Frank Fitch ,  Adeola Florence Ojo

发明人： Vijay Ramanand Balse ,  Martin Bulow ,  Philip Connolly ,  Frank Fitch ,  Adeola Florence Ojo

IPC分类号： B01J29/08 ,  B01J37/30 ,  B01J29/06

CPC分类号： B01J37/30 ,  B01J29/082 ,  B01J29/087 ,  B01J2229/42

摘要： Zeolites in particulate form that are uniformly exchanged with both lithium ions and trivalent cations are produced by first partially ion-exchanging the zeolite in powdered form with one or more selected trivalent ions, then agglomerating and calcining the partially trivalent cation-exchanged zeolite, then ion-exchanging the calcined agglomerate with lithium ions, and finally activating the trivalent cation- and lithium ion-exchanged zeolite.

摘要翻译： 与锂离子和三价阳离子均匀交换的颗粒形式的沸石通过首先部分离子交换具有一种或多种选择的三价离子的粉末形式的沸石，然后将部分三价阳离子交换的沸石进行附聚和煅烧，然后离子 用煅烧的聚集体与锂离子交换，最后活化三价阳离子和锂离子交换的沸石。