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    Method for treating ammonia
    1.
    发明授权
    Method for treating ammonia 失效
    氨处理方法

    公开(公告)号：US5589146A

    公开(公告)日：1996-12-31

    申请号：US626577

    申请日：1996-04-02

    申请人： Atsushi Morii ,  Osamu Naito ,  Toshiyuki Onishi ,  Hitoshi Nakamura ,  Kouzo Iida

    发明人： Atsushi Morii ,  Osamu Naito ,  Toshiyuki Onishi ,  Hitoshi Nakamura ,  Kouzo Iida

    IPC分类号： B01D53/56 ,  B01D53/04 ,  B01D53/34 ,  B01D53/58 ,  B01D53/86 ,  B01D53/94 ,  C01C3/00

    CPC分类号： B01D53/8634 ,  B01D53/0454

    摘要： A method for treating ammonia in an exhaust gas on the downstream side of a dry denitration device using ammonia as a reducing agent comprises the step of alternately carrying out ammonia adsorption and ammonia desorption/decomposition to continuously treat ammonia in the exhaust gas in a plurality of constitutional units parallelly connected on an exhaust gas line, the aforesaid constitutional units being constituted so as to carry out the steps of adsorbing/removing ammonia in an ammonia adsorbent-filling tower disposed at a position, where an exhaust gas temperature is 200.degree. C. or less, on the downstream side of the dry denitration device; heating, up to a temperature of 300.degree. C. or more, the ammonia adsorbent-filling tower on which ammonia is adsorbed in a saturated state, to desorb ammonia; and decomposing ammonia in an ammonia decomposition catalyst-filling tower disposed on a desorption ammonia gas line.

    摘要翻译： 使用氨作为还原剂在干脱硝装置的下游侧的废气中处理氨的方法包括交替进行氨吸附和氨解吸/分解以在废气中连续处理多个氨中的氨的步骤 结构单元并排连接在废气管线上，上述结构单元构成为在排气温度为200℃的氨气吸附剂填充塔中进行氨吸附除去步骤。 或更少，在干脱硝装置的下游侧; 加热至300℃以上的温度，将氨吸附在饱和状态的氨吸附剂填充塔脱氨; 并在设置在解吸氨气管线上的氨分解催化剂填充塔中分解氨。

    Method for the denitration of exhaust gas
    2.
    发明授权
    Method for the denitration of exhaust gas 失效
    废气脱硝方法

    公开(公告)号：US5505919A

    公开(公告)日：1996-04-09

    申请号：US282962

    申请日：1994-07-29

    申请人： Atsushi Morii ,  Satoru Serizawa ,  Osamu Naito ,  Masanori Demoto ,  Toshiyuki Onishi ,  Norihisa Kobayashi ,  Kouzo Iida

    发明人： Atsushi Morii ,  Satoru Serizawa ,  Osamu Naito ,  Masanori Demoto ,  Toshiyuki Onishi ,  Norihisa Kobayashi ,  Kouzo Iida

    IPC分类号： B01D53/86 ,  B01D53/94 ,  F01N3/08 ,  B01J8/02

    CPC分类号： B01D53/8625 ,  B01D53/8628 ,  Y02C20/10

    摘要： A method for the denitration of exhaust gas from a gas turbine or an internal combustion engine which comprises (a) reducing a part of the NO.sub.2 constituting NO.sub.x contained in the exhaust gas to NO by means of a reduction catalyst bed for reducing NO.sub.2 to NO, the reduction catalyst bed being installed in flow communication with the exhaust gas outlet of the gas turbine or internal combustion engine, and (b) injecting NH.sub.3 into the exhaust gas within an exhaust heat recovery unit and then decomposing and removing NO.sub.x contained in the exhaust gas and now composed chiefly of NO, by means a denitration catalyst bed installed within the exhaust heat recovery unit to effect the catalytic reduction of NO.sub.x with NH.sub.3.

    摘要翻译： 一种用于从燃气轮机或内燃机脱硝废气的方法，该方法包括：（a）通过用于将NO 2还原为NO的还原催化剂床将排气中所含的构成NO 2的NO 2的一部分还原为NO， 所述还原催化剂床安装成与所述燃气轮机或内燃机的排气出口流动连通，以及（b）将NH 3喷射到排气热回收单元内的废气中，然后分解和除去废气中所含的NOx 现在主要由NO组成，通过设置在废热回收装置内的脱硝催化剂床，以实现用NH 3催化还原NOx。

    Method for the regeneration of a denitration catalyst
    4.
    发明授权
    Method for the regeneration of a denitration catalyst 失效
    脱硝催化剂再生方法

    公开(公告)号：US6025292A

    公开(公告)日：2000-02-15

    申请号：US023219

    申请日：1998-02-12

    申请人： Yoshiaki Obayashi ,  Kouzo Iida ,  Atsushi Morii ,  Osamu Naito ,  Akira Hattori

    发明人： Yoshiaki Obayashi ,  Kouzo Iida ,  Atsushi Morii ,  Osamu Naito ,  Akira Hattori

    IPC分类号： B01D53/86 ,  B01D53/94 ,  B01D53/96 ,  B01J23/92 ,  B01J38/60 ,  B01J27/28

    CPC分类号： B01J23/92 ,  B01D53/8625 ,  B01J38/60 ,  Y02C20/30

    摘要： Disclosed are (1) a method for the regeneration of a denitration catalyst wherein, in order to regenerate a denitration catalyst having reduced denitration power, the catalyst is cleaned with a cleaning fluid having a hydrofluoric acid concentration of 0.3 to 3% by weight and maintained at a temperature of 20 to 80.degree. C., and (2) a method for the regeneration of a denitration catalyst which comprises the steps of cleaning a denitration catalyst having reduced denitration power under the conditions described in (1) above, drying the cleaned catalyst, and impregnating the catalyst with a catalytically active component so as to support it on the catalyst.

    摘要翻译： 公开了（1）一种用于再生脱硝催化剂的方法，其中为了再生具有降低的脱硝功率的脱硝催化剂，用具有0.3至3重量％的氢氟酸浓度的清洁流体清洁催化剂，并保持 温度为20〜80℃，（2）脱硝催化剂的再生方法，其特征在于，在上述（1）所述的条件下，对具有降低的脱硝功率的脱硝催化剂进行清洗， 催化剂，并用催化活性组分浸渍催化剂以便将其载于催化剂上。

    Ammonia decomposition catalysts
    5.
    发明授权
    Ammonia decomposition catalysts 失效
    氨分解催化剂

    公开(公告)号：US5679313A

    公开(公告)日：1997-10-21

    申请号：US472057

    申请日：1995-06-06

    申请人： Shigeru Nojima ,  Rie Tokuyama ,  Kouzo Iida

    发明人： Shigeru Nojima ,  Rie Tokuyama ,  Kouzo Iida

    IPC分类号： B01D53/86 ,  B01J29/04 ,  B01J29/08 ,  B01J29/18 ,  B01J29/70 ,  B01J37/02 ,  C01B3/04

    CPC分类号： B01D53/8634 ,  B01J29/04 ,  B01J29/082 ,  B01J29/084 ,  B01J29/18 ,  B01J29/7003 ,  B01J37/0246 ,  Y02E60/364

    摘要： An ammonia decomposition catalyst wherein a first catalyst having a crystalline silicate which is represented by the formula in terms of molar ratio of oxides as dehydrated: (1.+-.0.8)R.sub.2 O.�aM.sub.2 O.sub.3.bM'O.cAl.sub.2 O.sub.3 !.ySiO.sub.2, wherein R denotes an alkaline metal ion and/or hydrogen ion, M denotes a VIII Group element, rare earth element, titanium, vanadium, chromium, niobium, antimony or gallium, M' denotes magnesium, calcium, strontium or barium, a.gtoreq.0, 20>b.gtoreq.0, a+c=1, 3000>y>11 or a specific porous material as a carrier and iridium or a noble metal as an active metal is present together with or covered with a second catalyst having at least one element selected from the group consisting of titanium, vanadium, tungsten and molybdenum, if necessary, as well as a method of using the same.

    摘要翻译： 一种氨分解催化剂，其中具有由式表示的结晶硅酸盐的第一催化剂以氧化物的脱水摩尔比计：（1 +/- 0.8）R2O。[aM2O3.bM'O.cAl2O3] .ySiO2，其中 R表示碱金属离子和/或氢离子，M表示VIII族元素，稀土元素，钛，钒，铬，铌，锑或镓，M'表示镁，钙，锶或钡， 作为载体的特定多孔材料，作为活性金属的铱或贵金属与或者被第二催化剂一起存在或被第二催化剂覆盖，所述第二催化剂具有 如果需要，选自钛，钒，钨和钼的至少一种元素，以及使用该元素的方法。

    Ammonia decomposition catalysts
    6.
    再颁专利
    Ammonia decomposition catalysts 有权
    氨分解催化剂

    公开(公告)号：USRE39041E1

    公开(公告)日：2006-03-28

    申请号：US10052225

    申请日：2002-01-16

    申请人： Shigeru Nojima ,  Rie Tokuyama ,  Kouzo Iida

    发明人： Shigeru Nojima ,  Rie Tokuyama ,  Kouzo Iida

    IPC分类号： C01B3/04

    CPC分类号： B01D53/8634 ,  B01J29/04 ,  B01J29/082 ,  B01J29/084 ,  B01J29/18 ,  B01J29/7003 ,  B01J37/0246 ,  Y02E60/364

    摘要： An ammonia decomposition catalyst wherein a first catalyst having a crystalline silicate which is represented by the formula in terms of molar ratio of oxides as dehydrated: (1±0.8)R2O.[aM2O3.bM′O.cAl2O3].ySiO2, wherein R denotes an alkaline metal ion and/or hydrogen ion, M denotes a VIII Group element, rare earth element, titanium, vanadium, chromium, niobium, antimony or gallium, M′ denotes magnesium, calcium, strontium or barium, a≧0, 20>b≧0, a+c=1, 3000>y>11 or a specific porous material as a carrier and iridium or a noble metal as an active metal is present together with or covered with a second catalyst having at least one element selected from the group consisting of titanium, vanadium, tungsten and molybdenum, if necessary, as well as a method of using the same.

    摘要翻译： 一种氨分解催化剂，其中具有由以式表示的结晶硅酸盐的第一催化剂以氧化物的脱水摩尔比计：<？in-line-formula description =“In-line Formulas”end =“lead” （1±0.8）R 2 O 2。[aM 2 O 3] 3 .M'O.cAl 2 O ＆lt; 3-in-line-formula description =“In-line formula”end =“tail”？>其中R表示碱金属离子， /或氢离子，M表示VIII族元素，稀土元素，钛，钒，铬，铌，锑或镓，M'表示镁，钙，锶或钡，a> = 0,20> b> = 0 ，a + c = 1，3000> y> 11或作为载体的特定多孔材料，作为活性金属的铱或贵金属与第二催化剂一起存在或被具有至少一种选自以下的元素的第二催化剂覆盖： 的钛，钒，钨和钼，如果需要，以及使用它们的方法。

    Methods of denitrating exhaust gases
    7.
    发明授权
    Methods of denitrating exhaust gases 失效
    废气排放方法

    公开(公告)号：US6080376A

    公开(公告)日：2000-06-27

    申请号：US988116

    申请日：1997-12-10

    申请人： Kouzo Iida ,  Shigeru Nojima ,  Yoshiaki Obayashi ,  Norihisa Kobayashi ,  Satoru Serizawa

    发明人： Kouzo Iida ,  Shigeru Nojima ,  Yoshiaki Obayashi ,  Norihisa Kobayashi ,  Satoru Serizawa

    IPC分类号： B01D53/86 ,  B01J29/04 ,  B01J29/06 ,  C01B21/00

    CPC分类号： B01D53/8625 ,  B01D53/8628 ,  B01D53/8634 ,  B01J29/04 ,  B01J29/061

    摘要： A method of denitrating an exhaust gas by means of removing nitrogen oxides catalytically using ammonia as a reducing agent while introducing an exhaust gas containing the nitrogen oxides into a reaction vessel packed with a catalyst, comprising:providing a denitration catalyst layer in the upstream of the gas flow, an ammonia decomposition catalyst layer capable of decomposing oxidatively ammonia into nitrogen and nitrogen oxides in the downstream and a second denitration catalyst layer or a denitration catalyst layer capable of decomposing ammonia in the further downstream; and,adding ammonia in an amount not less than the reaction equivalence for the nitrogen oxides in the exhaust gas to the inlet of the first denitration catalyst layer.

    摘要翻译： 一种通过使用氨作为还原剂催化除去氮氧化物，同时将含有氮氧化物的废气引入填充有催化剂的反应容器中来对废气进行脱硝的方法，包括：在所述催化剂的上游提供脱硝催化剂层 气流，能够将氧化性氨分解成下游的氮和氮氧化物的氨分解催化剂层和能够在下游分解氨的第二脱硝催化剂层或脱硝催化剂层; 并且将不少于排气中的氮氧化物的反应当量的氨加入到第一脱硝催化剂层的入口。