公开(公告)号：US06380128B1

公开(公告)日：2002-04-30

申请号：US09452278

申请日：1999-11-30

申请人： Pyung Sam Ji ,  Hee Mun Eum ,  Jung Bin Lee ,  Dong Hwa Kim ,  In Young Lee ,  In Sik Nam ,  Sung Won Ham ,  Soo Tae Choo

发明人： Pyung Sam Ji ,  Hee Mun Eum ,  Jung Bin Lee ,  Dong Hwa Kim ,  In Young Lee ,  In Sik Nam ,  Sung Won Ham ,  Soo Tae Choo

IPC分类号： B01J2106

CPC分类号： B01J21/063 ,  B01D53/8628 ,  B01J23/02 ,  B01J23/22 ,  B01J35/10 ,  B01J37/0236

摘要： Disclosed are a catalyst for removing NOx from flue gas and its preparation. The catalyst comprises vanadium pentoxide, and barium oxide or calcium oxide as active components on a titanium dioxide support and is prepared by uniformly dispersing the metal oxides on the surface of the titanium dioxide support. This support is prepared by sufficiently drying and calcining a metatitanate (TiO(OH)2)-predominating slurry which is obtained from the course of the production of titanium dioxide for pigment from ilmenite. The catalyst exbihits excellent NOx removal activity as well as high durability against SO2, so that it can remove NOx for relatively longer period of time without being deteriorated by the poisoning induced by SO2 and significantly contribute to the prevention of plugging and corrosion of the downstream of a SCR reactor system.

摘要翻译： 公开了一种从烟气中除去NOx的催化剂及其制备方法。 催化剂包含五氧化二钒，氧化钡或氧化钙作为二氧化钛载体上的活性组分，并通过将金属氧化物均匀分散在二氧化钛载体的表面上制备。 通过充分干燥和煅烧从钛铁矿的颜料生产二氧化钛的过程中获得的偏钛酸盐（TiO（OH）2） - 浆液制备该载体。 催化剂具有优异的NOx去除活性以及对SO2的高耐久性，因此可以在不会被SO2引起的中毒的情况下，将NOx除去较长的时间，而且可以有效地防止下游的堵塞和腐蚀 SCR反应器系统。