Fluidized bed combustion process
    1.
    发明授权
    Fluidized bed combustion process 失效
    流化床燃烧过程

    公开(公告)号:US5106799A

    公开(公告)日:1992-04-21

    申请号:US646911

    申请日:1991-01-28

    摘要: A process and apparatus for fluidized bed combustion using a dense phase combustion zone over a dilute phase combustion zone. When used to regenerate FCC catalyst containing coke with relatively large amounts of NO.sub.x precursors, the catalyst is added to and partially regenerated in the dense phase zone and then falls down into the dilute phase zone. Most of the combustion air is added to the dilute phase and rises into and fluidizes the dense phase zone. NO.sub.x formed in the dilute phase is reduced to N.sub.2 in the dense phase.

    摘要翻译: 一种用于在稀相燃烧区上使用密相燃烧区的流化床燃烧的方法和装置。 当用于再生具有相当大量的NOx前体的含有FCC的FCC催化剂时,将催化剂加入并在密相区域中部分再生,然后落入稀相区。 大部分燃烧空气被加入到稀相中并且上升并使稠相区流化。 在稀相中形成的NOx在密相中降低到N2。

    Fluidized bed combustion process and apparatus
    2.
    发明授权
    Fluidized bed combustion process and apparatus 失效
    流化床燃烧过程和装置

    公开(公告)号:US4991521A

    公开(公告)日:1991-02-12

    申请号:US180755

    申请日:1988-04-12

    IPC分类号: B01J8/28 F23C10/00

    CPC分类号: F23C10/002 B01J8/28

    摘要: A process and apparatus for fluidized bed combustion using a dense phase combustion zone over a dilute phase combustion zone. When used to regenerate FCC catalyst containing coke with relatively large amounts of NO.sub.x precursors, the catalyst is added to and partially regenerated in the dense phase zone and then falls down into the dilute phase zone. Most of the combustion air is added to the dilute phase and rises into and fluidizes the dense phase zone. NO.sub.x formed in the dilute phase is reduced to N.sub.2 in the dense phase.

    摘要翻译: 一种用于在稀相燃烧区上使用密相燃烧区的流化床燃烧的方法和装置。 当用于再生具有相当大量的NOx前体的含有FCC的FCC催化剂时,将催化剂加入并在密相区域中部分再生,然后落入稀相区。 大部分燃烧空气被加入到稀相中并且上升并使稠相区流化。 在稀相中形成的NOx在密相中降低到N2。

    Catalytic cracking of hydrocarbons
    3.
    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
    4.
    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。

    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。

    Catalytic cracking of hydrocarbons
    8.
    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 。

    Method and apparatus for determining phase transition temperature using
laser attenuation
    9.
    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。