Catalytic cracking of hydrocarbons
    1.
    发明授权
    Catalytic cracking of hydrocarbons 失效
    碳氢化合物的催化裂化

    公开(公告)号:US4973399A

    公开(公告)日:1990-11-27

    申请号:US454475

    申请日:1989-12-21

    摘要: Emission of noxious nitrogen oxides with the flue gas from the regenerator of a fluid catalytic cracking plant are reduced by incorporating into the circulating inventory of cracking catalyst separate additive particles that contain a copper-loaded zeolite. A particularly effective additive is provided, for example, by treating a ZSM-5 zeolite in a matrix consisting predominantly of titania, zirconia or a mixture thereof with a solution containing both copper and rare earth cations to incorporate both of these elements with the zeolitic composition.

    摘要翻译: 通过将含有负载铜的沸石的裂化催化剂分离的添加剂颗粒结合到循环库存中,减少了来自流化催化裂化装置的再生器的烟道气的有害氮氧化物的排放。 提供了特别有效的添加剂,例如通过在主要由二氧化钛,氧化锆或其混合物组成的基质中处理ZSM-5沸石与含有铜和稀土阳离子的溶液以将这两种元素与沸石组合物结合 。

    Catalytic cracking of hydrocarbons
    2.
    发明授权
    Catalytic cracking of hydrocarbons 失效
    碳氢化合物的催化裂化

    公开(公告)号:US4980052A

    公开(公告)日:1990-12-25

    申请号:US433407

    申请日:1989-11-03

    摘要: Emission of noxious nitrogen oxides with the flue gas from the regenerator of a fluid catalytic cracking plant are reduced by incorporating into the circulating inventory of cracking catalyst separate additive particles that contain a copper-loaded zeolite. A particularly effective additive is provided by ion-exchanging ZSM-5 zeolite with cupric ion. With such preferred additive, CO emissions also are reduced, and the recovered gasoline has enhanced octane number.

    摘要翻译: 通过将含有负载铜的沸石的裂化催化剂分离的添加剂颗粒结合到循环库存中,减少了来自流化催化裂化装置的再生器的烟道气的有害氮氧化物的排放。 通过离子交换ZSM-5沸石与铜离子提供特别有效的添加剂。 使用这种优选的添加剂,CO排放也减少,回收的汽油具有增强的辛烷值。

    Zeolitic copper catalyst
    3.
    发明授权
    Zeolitic copper catalyst 失效
    沸石铜催化剂

    公开(公告)号:US4962075A

    公开(公告)日:1990-10-09

    申请号:US279613

    申请日:1988-12-05

    摘要: Improved zeolitic copper catalysts are prepared by incorporating with the catalyst a steam-stabilizing amount of titanium or zirconium compound. The novel compositions are particularly useful in treating wet exhaust gases to reduce the content of one or more pollutants such as nitrogen oxides, carbon monoxide and hydrocarbons.

    摘要翻译: 改进的沸石铜催化剂通过与催化剂掺入蒸汽稳定量的钛或锆化合物来制备。 该新型组合物特别可用于处理湿废气以减少一种或多种污染物如氮氧化物,一氧化碳和碳氢化合物的含量。

    Catalytic cracking of hydrocarbons
    4.
    发明授权
    Catalytic cracking of hydrocarbons 失效
    碳氢化合物的催化裂化

    公开(公告)号:US5085762A

    公开(公告)日:1992-02-04

    申请号:US548349

    申请日:1990-07-05

    IPC分类号: B01J29/70 B01J29/86 C10G11/05

    摘要: Emission of noxious nitrogen oxides with the flue gas from the regenerator of a fluid catalytic cracking plant are reduced by incorporating into the circulating inventory of cracking catalyst separate additive particles that contain a copper-loaded zeolite material having a characteristic structure with a defined X-ray diffraction pattern. The preferred material of this type is zeolite MCM-22. The copper may be exchanged onto the zeolite or impregnated into the catalyst. In addition, the catalyst may include titanium or zirconium to provide stability and further improvements in stability may be obtained with the addition of rareearth metal cations, especially cerium or yttrium. NOX and CO emissions from the regenerator are reduced, and the gasoline produced in the unit may have an improved octane number.

    摘要翻译: 流化催化裂化装置的再生器的废气中的有害氮氧化物的排放通过将含有具有特定结构的含铜负载沸石材料的裂化催化剂的分开的添加剂颗粒加入循环库存中来减少,所述添加剂颗粒具有规定的X射线 衍射图案。 这种类型的优选材料是沸石MCM-22。 铜可以交换到沸石上或浸入催化剂中。 此外,催化剂可以包括钛或锆以提供稳定性,并且通过添加乳剂金属阳离子,特别是铈或钇,可以获得稳定性的进一步改善。 来自再生器的NO x和CO排放减少,并且在该单元中产生的汽油可能具有改善的辛烷值。

    Method and apparatus for activating catalysts using electromagnetic
radiation
    5.
    发明授权
    Method and apparatus for activating catalysts using electromagnetic radiation 失效
    使用电磁辐射活化催化剂的方法和装置

    公开(公告)号:US4970397A

    公开(公告)日:1990-11-13

    申请号:US367175

    申请日:1989-06-16

    IPC分类号: B01J37/34 G01N21/35

    摘要: This invention relates to electromagnetically induced thermal activation method and apparatus for in-situ preparation of samples including zeolite catalyst. More particularly, the invention relates to preparation of samples for IR spectroscopic characterization analysis. The technique is based on electromagnetically introduced thermal treatment of a catalyst situated in a specially designed vacum cell which is housed in the sample compartment of an IR analyzer. The sample is selectively heated by adsorption of direct infrared radiation from a laser. The sample is supported on a negligible mass which preferably comprises a wire made of nichrome.

    摘要翻译: 本发明涉及电磁感应热活化方法和装置,用于原位制备包括沸石催化剂的试样。 更具体地,本发明涉及用于IR光谱表征分析的样品的制备。 该技术基于对位于IR分析仪的样品室中的特别设计的真空电池中的催化剂的电磁引入热处理。 通过吸收来自激光的直接红外辐射来选择性地加热样品。 样品被支撑在可以忽略的质量上,其优选地包括由镍铬合金制成的线。

    Enhancement of solid fuel combustion by catalyst deposited on a substrate
    6.
    发明授权
    Enhancement of solid fuel combustion by catalyst deposited on a substrate 失效
    通过沉积在基底上的催化剂增强固体燃料燃烧

    公开(公告)号:US4515092A

    公开(公告)日:1985-05-07

    申请号:US569816

    申请日:1984-01-11

    IPC分类号: F23C10/00 F23C13/00 F23D1/00

    CPC分类号: F23C13/00 F23C10/002

    摘要: A combustion enhancing catalyst is deposited on a particulate refractory substrate such as sand. The solid fuel is contacted with the impregnated substrate and burned, for example, in a fluidized bed combustor. The substrate and catalyst remains in the combustor thereby obviating problems of catalyst loss and adverse effects of emitted metal particles.

    摘要翻译: 燃烧增强催化剂沉积在颗粒耐火基材如砂上。 固体燃料与浸渍的基材接触并在例如流化床燃烧器中燃烧。 衬底和催化剂保留在燃烧器中,从而消除了催化剂损失和发射的金属颗粒的不利影响的问题。

    Reducing NO.sub.x emissions from a circulating fluid bed combustor
    7.
    发明授权
    Reducing NO.sub.x emissions from a circulating fluid bed combustor 失效
    减少循环流化床燃烧室的NOx排放

    公开(公告)号:US5055029A

    公开(公告)日:1991-10-08

    申请号:US660913

    申请日:1991-02-27

    IPC分类号: F23C10/10

    摘要: A circulating fluid bed combustion (CFBC) unit, which burns a carbon and nitrogen containing fuel to produce heat and flue gas comprising NO.sub.x, operates with reduced emissions of NO.sub.x from the flue gas by adding to the circulating fluid bed a catalytically effective amount of a DeNO.sub.x catalyst, such as bismuth oxide on a silica/alumina support. The DeNO.sub.x catalyst may circulate freely with the circulating inventory of particulates in the CFB, or can be disposed on a heavier particle which "slips" and has an extended residence time in the combustion zone where the carbonaceous fuel is burned. A CO combustion promoter, such as Pt on silica/alumina may also be present.

    摘要翻译: 燃烧含碳和氮的燃料以产生包含NOx的烟气的循环流化床燃烧(CFBC)单元通过向循环流化床中减少催化有效量的 DeNOx催化剂,例如二氧化硅/氧化铝载体上的氧化铋。 DeNOx催化剂可以与CFB中的颗粒的循环库存自由循环,或者可以放置在较重的颗粒上,该颗粒“滑倒”并且在碳燃料燃烧的燃烧区域具有延长的停留时间。 还可以存在CO燃烧促进剂,例如二氧化硅/氧化铝上的Pt。

    Method and apparatus for determining phase transition temperature using
laser attenuation
    8.
    发明授权
    Method and apparatus for determining phase transition temperature using laser attenuation 失效
    使用激光衰减确定相变温度的方法和装置

    公开(公告)号:US4804274A

    公开(公告)日:1989-02-14

    申请号:US947927

    申请日:1986-12-30

    申请人: Gary J. Green

    发明人: Gary J. Green

    IPC分类号: G01N25/04 G01N33/28 G01N25/12

    CPC分类号: G01N33/2811 G01N25/04

    摘要: Disclosed are methods and apparatus for determining phase transition temperatures and, more particularly, for determining cloud, fluidity, freezing, and haze points of hydrocarbon fuels and hydrocarbon/oxygenate fuel blends. The attenuation of laser light as it passes through the sample, then through a laser line filter, and then into a photodetector is used to determine the transition temperature.

    摘要翻译: 公开了用于确定相变温度的方法和装置,更具体地,涉及用于确定碳氢燃料和烃/含氧化合物燃料混合物的云,流动性,冷冻和雾度点。 激光通过样品时,然后通过激光线滤波器,然后进入光电检测器的衰减被用来确定转换温度。