利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

183 条记录 (耗时 0.017 秒)

    Process for the production of sulfuric acid using coated catalysts
    82.
    发明授权
    Process for the production of sulfuric acid using coated catalysts 失效
    使用涂覆催化剂生产硫酸的方法

    公开(公告)号：US4552744A

    公开(公告)日：1985-11-12

    申请号：US635626

    申请日：1984-07-30

    申请人： Karl T. Chuang ,  David R. P. Thatcher

    发明人： Karl T. Chuang ,  David R. P. Thatcher

    IPC分类号： B01J31/00 ,  B01J33/00 ,  C01B17/775 ,  C01B17/78 ,  C01B17/80 ,  C01B17/74 ,  C01B17/48 ,  C01B17/98

    CPC分类号： C01B17/775 ,  C01B17/78

    摘要： A process is described for producing sulphuric acid from sulphur dioxide (SO.sub.2) wherein two fluid streams, in the form of a gaseous SO.sub.2 gas and oxygen (air), and a liquid, primary sulphuric acid and water, are contacted with each other and a catalyst assembly at a temperature in the range 150.degree. to 280.degree. C., the catalyst assembly comprising, for example, non-combustible, sulphuric acid resistant, porous ceramic supports with outer, porous membrane coatings on them of, say, polytetrafluorethylene, which is a process temperature and sulphuric acid resistant, water repellent, gaseous sulphur dioxide and oxygen gas permeable, high molecular, organic polymeric material, and platinum crystallites dispersed on the support in the polytetrafluorethylene so that:(i) gaseous sulphur dioxide and oxygen are catalytically combined to form sulphur trioxide,(ii) exothermic heat generated in the catalyst assembly by the formation of sulphur trioxide therein dissipated by the sulphuric acid and water,(iii) the sulphur trioxide and the water combine to form secondary sulphuric acid, and(iv) the primary sulphuric acid combines with the secondary sulphuric acid to form a relatively more concentrated sulphuric acid solution therewith which is collected.

    摘要翻译： 描述了从二氧化硫（SO 2）生产硫酸的方法，其中以气态SO 2气体和氧气（空气）形式的两种流体流和液体，一级硫酸和水彼此接触，并且 催化剂组件在150℃至280℃的温度范围内，催化剂组合物包括例如不可燃的耐硫酸的多孔陶瓷载体，其上具有外部多孔膜，例如聚四氟乙烯，其中，聚四氟乙烯 是加工温度和耐硫酸，防水，气态二氧化硫和氧气可透过的高分子有机聚合材料和分散在聚四氟乙烯载体上的铂微晶，从而：（i）气态二氧化硫和氧气是催化剂 合并形成三氧化硫，（ii）在催化剂组件中通过形成其中由硫酸和水分散的三氧化硫产生的放热 r，（iii）三氧化硫和水结合形成仲硫酸，（iv）一次硫酸与次硫酸结合形成相对较浓的硫酸溶液，并收集。

    Heat exchange techniques for the catalytic oxidation of gaseous sulfur compounds to sulfur trioxide
    83.
    发明授权
    Heat exchange techniques for the catalytic oxidation of gaseous sulfur compounds to sulfur trioxide 失效
    用于将气态硫化合物催化氧化成三氧化硫的热交换技术

    公开(公告)号：US4296088A

    公开(公告)日：1981-10-20

    申请号：US96127

    申请日：1979-11-20

    申请人： Adolf Stauffer

    发明人： Adolf Stauffer

    IPC分类号： C01B17/76 ,  B01J8/02 ,  B01J8/04 ,  C01B17/80

    CPC分类号： C01B17/803 ,  B01J8/0285 ,  B01J8/0446 ,  B01J2208/00053 ,  B01J2208/00212 ,  B01J2208/00256 ,  B01J2208/00274 ,  B01J2208/00495 ,  Y02P20/129

    摘要： In a process for the catalytic oxidation of gaseous sulfur compounds to sulfur trioxide comprising passing said gaseous sulfur compounds through a plurality of serially connected catalytic stages at 400.degree.-580.degree. C., the improvement which comprises circulating a liquid heat exchange medium in indirect heat exchange relationship to the reaction gases in the catalytic stages and with a heat consumer and optionally a heat source at a rate and amount such that the liquid heat exchange medium absorbs substantially all the exothermic reaction heat and fluctuates no more than 5 centrigrade degrees, thereby controlling the temperature of said catalytic stages.

    摘要翻译： 在气态硫化合物催化氧化成三氧化硫的方法中，包括使所述气态硫化合物在400-580℃下通过多个串联连接的催化级，其改进包括使液体热交换介质在间接加热 与催化阶段的反应气体和热消耗者和任选的热源的速率和量的交换关系，使得液体热交换介质几乎吸收所有的放热反应热并且波动不超过5摄氏度，从而控制 所述催化级的温度。

    Contact node of a system for production of sulphuric acid
    84.
    发明授权
    Contact node of a system for production of sulphuric acid 失效
    用于生产硫酸的系统的接点节点

    公开(公告)号：US4244921A

    公开(公告)日：1981-01-13

    申请号：US40028

    申请日：1979-05-18

    申请人： Andrzej Tasior ,  Marian Blicharz ,  Jozef Kania ,  Jozef Strzelski ,  Ignacy Kracik

    发明人： Andrzej Tasior ,  Marian Blicharz ,  Jozef Kania ,  Jozef Strzelski ,  Ignacy Kracik

    IPC分类号： B01J8/04 ,  C01B17/765 ,  C01B17/80 ,  C01B17/48 ,  F28D7/00

    CPC分类号： C01B17/803 ,  C01B17/765

    摘要： A contact system for production of sulphuric acid of a high yield, especially of pyrite or roaster gases by means of the contact method in a system of single- or double-stage conversion consists of a number of separate contact units, each of them including one layer of a catalyst and a heat exchanger. A layer of a catalyst is in the form of a vertical cylinder, and in the space enclosed by the said layer a heat exchanger is situated. A contact apparatus is provided with a helical guide of the gas supplied onto a layer of the catalyst.

    摘要翻译： 通过单级或双级转换系统中的接触方法生产高产率硫酸的接触系统，特别是黄铁矿或焙烧气体的接触系统由多个单独的接触单元组成，每个接触单元包括一个 催化剂层和热交换器。 催化剂层为垂直圆柱体的形式，并且在由所述层包围的空间中设置有热交换器。 接触装置设置有供应到催化剂层上的气体的螺旋引导件。

    Process for the production of concentrated sulfuric acid and/or oleum from a wet sulfur dioxide feed
    86.
    发明授权
    Process for the production of concentrated sulfuric acid and/or oleum from a wet sulfur dioxide feed 失效
    用于从湿二氧化硫进料生产浓硫酸和/或发烟硫酸的方法

    公开(公告)号：US4064223A

    公开(公告)日：1977-12-20

    申请号：US655027

    申请日：1976-02-03

    申请人： Franz Maier ,  Robert Peichl

    发明人： Franz Maier ,  Robert Peichl

    IPC分类号： C01B17/775 ,  C01B17/765 ,  C01B17/80 ,  C01B17/72

    CPC分类号： C01B17/7655

    摘要： Concentrated sulfuric acid and/or oleum is prepared by the catalytic oxidation of sulfur dioxide to sulfur trioxide using a gas containing water vapor, SO.sub.2 and oxygen. The catalytic oxidation is carried out in two stages. After the first stage an intermediate cooling of the reaction gas, and absorption of the water vapor content and an intermediate absorption of the sulfur trioxide formed in the first stage are performed. In the second stage the unreacted SO.sub.2 is catalytically oxidized to SO.sub.3 in the absence of water vapor, this SO.sub.3 being absorbed in sulfuric acid. An apparatus for carrying out the process is disclosed including a primary catalysis stage, means for the intermediate cooling of the reaction gas, means for the removal of the water vapor content, means for the intermediate absorption of the SO.sub.2 of the first stage, a secondary stage for the catalytic oxidation of the unreacted sulfur dioxide in the absence of water and an end absorption unit for SO.sub.2 absorption produced in the secondary stage.

    摘要翻译： 通过使用含有水蒸汽，SO 2和氧气的二氧化硫催化氧化成三氧化硫来制备浓硫酸和/或发烟硫酸。 催化氧化分两个阶段进行。 在第一阶段之后，进行反应气体的中间冷却，以及在第一阶段中形成的水​​蒸气含量的吸收和三氧化硫的中间吸收。 在第二阶段，在没有水蒸气的情况下，未反应的SO 2被催化氧化成SO 3，该SO 3被吸收在硫酸中。 公开了一种用于实施该方法的装置，包括一级催化级，用于中间冷却反应气体的装置，用于除去水汽含量的装置，用于中间吸收第一级SO2的装置，二级 在不存在水的情况下催化氧化未反应的二氧化硫的阶段，以及在次级阶段产生的SO 2吸收的终端吸收单元。

    Process for absorbing SO.sub.3
    87.
    发明授权
    Process for absorbing SO.sub.3 失效
    吸收SO（HD 3）的方法

    公开(公告)号：US3950493A

    公开(公告)日：1976-04-13

    申请号：US508443

    申请日：1974-09-23

    申请人： Karl-Heinz Dorr ,  Lothar Reh ,  Hugo Grimm ,  Karel Vydra

    发明人： Karl-Heinz Dorr ,  Lothar Reh ,  Hugo Grimm ,  Karel Vydra

    IPC分类号： B01D53/50 ,  B01D53/77 ,  C01B17/74 ,  C01B17/80 ,  B01D53/34

    CPC分类号： C01B17/806 ,  Y10S261/54

    摘要： A process for removing sulfur trioxide from gases wherein the sulfur trioxide-containing gas is treated with sulfuric acid in a Venturi absorber, the sulfur-trioxide laden sulfuric acid is passed in indirect heat exchange with a cooling fluid within the widening outlet of the absorber and the sulfur trioxide-laden sulfuric acid is separated from the gas phase.

    摘要翻译： 一种从气体中除去三氧化硫的方法，其中在文氏管吸收器中用硫酸处理含三氧化硫的气体，将含硫三氧化硫的硫酸与吸收器加宽出口内的冷却流体进行间接热交换， 将含三氧化硫的硫酸与气相分离。