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1.发明授权
公开(公告)号：US5021227A
公开(公告)日：1991-06-04
申请号：US474274
申请日：1990-02-02
CPC分类号： F02B37/02 , B01D53/9409 , B01D53/9431 , B01D53/9495 , F01N13/0097 , F01N3/08 , F01N3/208 , F01N2610/02 , F01N2900/08 , F02B3/06 , Y02T10/144 , Y02T10/24
摘要： The present invention concerns a method of removing nitrogen oxides in exhaust gases from a diesel engine by using a catalyst in a reacter under the presence of ammonia, wherein a humidity of in-take air as a specific factor and one or more of engine power, fuel consumption amount of engine, temperature of engine in-take air and exhaust gas temperature as selective factors are measured respectively as the measuring factors and the flow rate of ammonia is controlled based on measured values and ammonia is supplied to an exhaust gas flow channel from the engine to the reactor.
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公开(公告)号：US5116579A
公开(公告)日：1992-05-26
申请号：US678119
申请日：1991-04-01
CPC分类号： F02B37/02 , B01D53/9409 , B01D53/9431 , B01D53/9495 , F01N13/0097 , F01N3/08 , F01N3/208 , F01N2610/02 , F01N2900/08 , F02B3/06 , Y02T10/144 , Y02T10/24
摘要： The present invention concerns a method of removing nitrogen oxides in exhaust gases from a diesel engine by using a catalyst in a reacter under the presence of ammonia, wherein a humidity of in-take air as a specific factor and one or more of engine power, fuel consumption amount of engine, temperature of engine in-take air and exhaust gas temperature as selective factors are measured respectively as the measuring factors and the flow rate of ammonia is controlled based on measured values and ammonia is supplied to an exhaust gas flow channel from the engine to the reactor.
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公开(公告)号：US4854123A
公开(公告)日：1989-08-08
申请号：US148877
申请日：1988-01-27
CPC分类号： F01N3/208 , B01D53/9431 , B01D53/9495 , F02D41/1462 , F01N2610/02 , F01N2610/146 , F01N2900/08 , F02B1/04 , F02B3/06 , Y02T10/24
摘要： A method for the removal of nitrogen oxides from the exhaust gas of a diesel engine through catalytic reduction by the use of honeycomb catalyst in the presence of ammonia, which method comprises feeding ammonia into said exhaust gas proportionately to the product of the revolution number of said diesel engine multiplied by the torque of said diesel engine.
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4.发明授权Adsorbent for nitrogen oxides and method for removal of nitrogen oxides by use thereof 失效用于氮氧化物的吸附剂和使用它们去除氮氧化物的方法
公开(公告)号：US6068824A
公开(公告)日：2000-05-30
申请号：US738422
申请日：1996-10-25
IPC分类号： B01D53/02 , B01D53/86 , B01D53/94 , B01J20/02 , B01J23/38 , B01J23/54 , B01J37/03 , B01D59/26
CPC分类号： B01D53/9481 , B01D53/02 , B01D53/8628 , B01J20/02 , B01J20/0225 , B01J20/0233 , B01J20/0277 , B01J20/0281 , B01J20/0288 , B01J20/0296 , B01J20/06 , B01J20/10 , B01J20/18 , B01J20/223 , B01J23/38 , B01J23/54 , B01J37/031 , B01J37/033
摘要： This invention discloses an adsorbent ideal or the removal of nitrogen oxides (NO.sub.x : nitrogen monoxide and nitrogen dioxide), particularly nitrogen dioxide, from an exhaust gas containing the nitrogen oxides at low concentrations and a method for efficient removal of nitrogen oxides, particularly nitrogen dioxide, from an exhaust gas containing the nitrogen oxides at low concentrations by the use of the adsorbent. The adsorbent either comprises at least one noble metal selected from the group consisting of Pt, Au, Ru, Rh, and Pd and/or a compound thereof supported on a carrier or comprises the noble metal component and an oxide of at least one heavy metal selected from the group consisting of Mn, Fe, Co, Ni, Cu, Zn and Pb, which may be supported on the carrier, if necessary.
摘要翻译： 本发明公开了一种从含有低浓度氮氧化物的废气中理想或去除氮氧化物（NOx：一氧化氮和二氧化氮），特别是二氧化氮的吸附剂，以及有效去除氮氧化物，特别是二氧化氮的方法 ，通过使用吸附剂从含有低浓度的氮氧化物的排气中排出。 所述吸附剂包含至少一种选自Pt，Au，Ru，Rh和Pd的贵金属和/或其负载在载体上的化合物，或包含贵金属组分和至少一种重金属的氧化物 选自Mn，Fe，Co，Ni，Cu，Zn和Pb，如果需要，其可以负载在载体上。
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5.发明授权Catalyst for removal of nitrogen oxides and method for removal of nitrogen oxides by use of the catalyst 失效用于除去硝酸的催化剂和使用催化剂除去氮氧化物的方法
公开(公告)号：US5128301A
公开(公告)日：1992-07-07
申请号：US564448
申请日：1990-08-08
申请人： Motonobu Kobayashi , Futoru Kinoshita , Yoku Nanba , Akiras Inoue
发明人： Motonobu Kobayashi , Futoru Kinoshita , Yoku Nanba , Akiras Inoue
CPC分类号： B01D53/9418 , B01D2251/2062 , B01D2255/207 , B01D2255/20707 , B01D2255/30 , B01D2255/9207
摘要： A honeycomb catalyst for effecting catalytic reduction and removal of nitrogen oxides in waste gas in the presence of ammonia, which homeycomb catalyst (I) contains a catalytically active substance comprising 60 to 99.5% by weight of a binary oxide containing titanium and silicon and 40 to 0.5% by weight of the oxide of at least one metal selected from the group consisting of vanadium, tungsten, molybdenum, copper, manganese, cerium, and tin, (II) possesses an opening ratio in the cross section of said catalyst in the range of 80 to 90%, (III) has a thickness of partition walls separating through holes in the range of 0.2 to 0.8 mm, and (IV) possesses pores comprising substantially two independent pore groups each of a uniform pore diameter, such that the pore volume occupied by one pore group having a pore diameter in the range of 0.01 to 0.03 .mu.m accounts for a proportion in the range of 50 to 80% of the total pore volume and the pore volume occupied by the other pore group having a pore diameter in the range of 0.8 to 4 .mu.m accounts for the proportion of the range of 10 to 30% of the total pore volume.
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公开(公告)号：US5124303A
公开(公告)日：1992-06-23
申请号：US749671
申请日：1991-08-26
CPC分类号： B01J21/066 , B01D53/9413 , B01J21/063 , B01D2255/20707 , B01D2255/20715 , B01D2255/20776 , B01D2255/9202
摘要： A waste gas-treating catalyst produced by coating the gas inlet side leasing end part of an integrally formed titanium-containing porous nitrogen oxide removing catalyst with at least one sol selected from the group consisting of zirconia sol and zirconium silicate sol, drying and/or calcining the coated catalyst.
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