公开(公告)号：US11673128B2

公开(公告)日：2023-06-13

申请号：US16960007

申请日：2019-09-12

申请人： Sinocat Environmental Technology Co., Ltd.

发明人： Zhimin Liu ,  Xi Feng ,  Yanhua Zhang ,  Dong Zeng ,  Jie Wen ,  Ganxue Wu ,  Ruifang Wang ,  Kuan Wei ,  Yun Li ,  Qizhang Chen ,  Yaoqiang Chen

IPC分类号： B01J29/80 ,  B01D53/94 ,  B01J29/76 ,  B01J37/00 ,  B01J37/02 ,  B01J37/04 ,  B01J37/06 ,  B01J37/08 ,  B01J37/30 ,  B01J29/04 ,  B01J29/06 ,  B01J29/072 ,  B01J29/00 ,  B01J29/70 ,  B01J35/00 ,  B01J35/04

CPC分类号： B01J29/80 ,  B01D53/9418 ,  B01J29/005 ,  B01J29/04 ,  B01J29/06 ,  B01J29/061 ,  B01J29/072 ,  B01J29/7057 ,  B01J29/7065 ,  B01J29/76 ,  B01J29/763 ,  B01J29/7615 ,  B01J35/0006 ,  B01J35/04 ,  B01J37/0009 ,  B01J37/0036 ,  B01J37/0225 ,  B01J37/0236 ,  B01J37/04 ,  B01J37/06 ,  B01J37/088 ,  B01J37/30 ,  B01D2255/206 ,  B01D2255/207 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/502 ,  B01D2257/40 ,  B01D2257/402 ,  B01D2257/404 ,  B01D2258/012 ,  B01J2029/062 ,  B01J2229/186 ,  B01J2229/42

摘要： A method for preparing a molecular sieve SCR (selective catalytic reduction) catalyst and a prepared catalyst therethrough. In the method, several molecular sieves are mixed and modified by transition metal or rare-earth metal via ion exchange, then loaded Fe by equivalent-volume impregnation, and loaded Cu by one or more liquid ion exchange. This present invention, combined with several techniques, such as modification of stable molecular sieve by transition and rare-earth metal, Fe loading by equivalent-volume impregnation and Cu loading by one or more liquid ion exchange, and after through stable and effective modification and loading control, the obtained catalyst material is coated on a carrier substrate via size mixing and coating process to be prepared into an integral catalyst.

公开(公告)号：US11596932B2

公开(公告)日：2023-03-07

申请号：US17040523

申请日：2019-05-30

申请人： Sinocat Environmental Technology Co., Ltd.

发明人： Yun Wang ,  Yi Dan ,  Hongyi Du ,  Zan Zhu ,  Tiantian Luo ,  Yanhua Zhang ,  Qin Wang ,  Yun Li ,  Qizhang Chen ,  Yongxiang Cheng

IPC分类号： B01J29/06 ,  B01J29/76 ,  B01D53/86 ,  B01J21/04 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J29/46 ,  B01J29/85 ,  B01J29/74 ,  B01J37/02 ,  B01J37/08

摘要： Disclosed in the present invention is a tail gas treatment catalyst. The catalyst consists of a carrier, a first catalyst, and a second catalyst. The first catalyst and the second catalyst are provided on both ends of the carrier. The first catalyst can purify pollutants in tail gas. The second catalyst can purify a byproduct, ammonia, obtained by the purification by the first catalyst and pollutants that are not completely purified by the first catalyst. The second catalyst is of a double-layer structure; the lower layer consists of an oxygen storage material, aluminum oxide, and a second active component; the second active component is a composition of Pt and Pd, or a composition of Ce, Fe, Ni and Cu; the upper layer consists of a molecular sieve and a third active component; the third active component is Cu or a composition of Cu and Fe. The tail gas treatment catalyst of the present invention has high purification treatment efficiency, and can significantly reduce the emissions of CH4, CO, and NOx in the tail gas, especially reduce the content of the byproduct, NH3, so that the tail gas can meet China VI emission standards.