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26 条记录 (耗时 0.015 秒)

    Process for preparing an oxidation catalyst
    1.
    发明授权
    Process for preparing an oxidation catalyst 失效
    制备氧化催化剂的方法

    公开(公告)号：US4485190A

    公开(公告)日：1984-11-27

    申请号：US136585

    申请日：1980-04-02

    申请人： Fawzy G. Sherif

    发明人： Fawzy G. Sherif

    IPC分类号： B01J23/22 ,  C01B17/79 ,  B01J27/02 ,  C01B17/68

    CPC分类号： B01J23/22 ,  C01B17/79

    摘要： A process for preparing a catalyst for the oxidation of sulfur dioxide comprising:(a) intimately contacting a siliceous support with a mixture of a water-insoluble vanadium (V) compound, a potassium (K) salt so that the K/V molar ratio is maintained between about 2.5 and about 4.0, a source of sulfite anion, a water-insoluble sodium (Na) salt of an acid having a pKa between about 3 and about 7 so that the K/Na molar ratio is between about 4 and about 8, and water to form an intermediate product;(b) drying the intermediate product;(c) calcining the dried intermediate product; and(d) sulfating the calcined intermediate product; thus providing a catalyst with high durability and high catalytic activity with an alpha-cristobalite content between from about 1 to about 30 percent.The wet catalyst may be extruded into shaped forms such as spheres, cylinders, trilobes, or tablets before drying.

    摘要翻译： 一种制备用于氧化二氧化硫的催化剂的方法，包括：（a）使硅质载体与水不溶性钒（V）化合物，钾（K）盐的混合物紧密接触，使得K / V摩尔比 维持在约2.5至约4.0之间，亚硫酸根阴离子源，具有约3至约7的pKa的酸的水不溶性钠（Na）盐，使得K / Na摩尔比为约4至约约 8和水形成中间产物; （b）干燥中间产物; （c）煅烧干燥的中间产物; 和（d）硫化煅烧的中间产物; 从而提供具有高耐久性和高催化活性的催化剂，其中α-方英石含量为约1至约30％。 在干燥之前，湿催化剂可以挤出成形状，例如球体，圆柱体，三叶片或片剂。

    Catalytic process for removing SO.sub.2 from sulfuric acid plant off gases
    2.
    发明授权
    Catalytic process for removing SO.sub.2 from sulfuric acid plant off gases 失效
    从硫酸植物废气中除去SO'2的催化方法

    公开(公告)号：US3987153A

    公开(公告)日：1976-10-19

    申请号：US397722

    申请日：1973-09-17

    申请人： Alvin B. Stiles

    发明人： Alvin B. Stiles

    IPC分类号： B01D53/50 ,  B01J23/22 ,  C01B17/79 ,  C01B17/68 ,  C01B17/00

    CPC分类号： B01D53/50 ,  B01J23/22 ,  C01B17/79

    摘要： The invention is directed to an integrated process for reducing the SO.sub.2 content of sulfuric acid plant off gases by (1) passing the SO.sub.2 -containing feed gas to the process over a specially defined multistage oxidation catalyst to convert SO.sub.2 to SO.sub.3, (2) absorbing the SO.sub.3 in water to form H.sub.2 SO.sub.4 and (3) scrubbing the off gases with aqueous hydrogen peroxide and/or sulfur-containing peroxy acids. At least the final oxidation stage of the process employs a supported CsVO.sub.3 or RbVO.sub.3 catalyst which is activated with cobalt or nickel sulfate and promoted with alkali metal sulfates, potassium aluminum sulfate or chromium potassium sulfate.

    Producing sulphuric acid
    4.
    发明授权
    Producing sulphuric acid 失效
    生产硫酸

    公开(公告)号：US4139596A

    公开(公告)日：1979-02-13

    申请号：US875739

    申请日：1978-02-06

    申请人： Vesper A. Vaseen

    发明人： Vesper A. Vaseen

    IPC分类号： C01B17/775 ,  C01B17/74 ,  B01K1/00 ,  C01B17/68

    CPC分类号： C01B17/775

    摘要： This invention is based on the factors that both oxygen gas and oxides of sulphur as well as hydrogen sulphide are highly soluble in saturated, halogenated hydrocarbon liquids which are also dielectric liquids. The absorber liquid, saturated with dissolved oxygen and sulphur dioxide and/or hydrogen sulphide is then ozonated using the solvent or absorber liquid dielectric as the dielectric in an ozone generator. The sulphur trioxide produced by the ozone reacting with the sulphur dioxide and hydrogen sulphide in the presence of a catalyst (accelerates reactions) also carried in the liquid dielectric or, in the liquid stream at the ozonator, is then mixed with sufficient water to absorb the sulphur trioxide and produce the strength of sulphuric acid desired from the system. The sulphuric acid having a different specific gravity than the inert absorber liquid is gravity separated from the absorber liquid. The absorber liquid is returned to the scrubber or dissolver of the gaseous sulphur compounds for recycle use.

    摘要翻译： 本发明基于氧气和硫的氧化物以及硫化氢都高度溶于也是介电液体的饱和卤代烃液体的因素。 然后用溶解氧和二氧化硫和/或硫化氢饱和的吸收剂液体使用溶剂或吸收剂液体电介质作为臭氧发生器中的电介质进行臭氧化。 在催化剂存在下，臭氧与二氧化硫和硫化氢反应产生的三氧化硫（加速反应）也在液体电介质中携带，或者在臭氧发生器的液体流中与足够的水混合以吸收 三氧化硫，并产生系统所需的硫酸强度。 比惰性吸收剂液体具有不同比重的硫酸与吸收剂液体重力分离。 吸收剂液体返回到气态硫化合物的洗涤器或溶解器中以便循环使用。

    Catalytic reactor having annular catalyst tray means
    8.
    发明授权
    Catalytic reactor having annular catalyst tray means 失效
    具有环状催化剂托盘装置的催化反应器

    公开(公告)号：US3963423A

    公开(公告)日：1976-06-15

    申请号：US488137

    申请日：1974-07-12

    申请人： Karl Heinz Dorr ,  Waldemar Weber ,  Hugo Grimm ,  Gustav Rowedder

    发明人： Karl Heinz Dorr ,  Waldemar Weber ,  Hugo Grimm ,  Gustav Rowedder

    IPC分类号： C01B17/765 ,  B01J8/02 ,  B01J8/04 ,  C01B17/80 ,  C01B17/68

    CPC分类号： C01B17/803 ,  B01J8/0469 ,  B01J8/0473 ,  B01J8/0496 ,  B01J2208/00194 ,  B01J2208/021

    摘要： A catalytic reactor for converting sulfur dioxide to sulfur trioxide, suitable for high throughput rates of up to about 500,000 standard cubic meters per hour. The reactor includes a plurality of separate reaction chambers each containing catalyst trays connected in parallel in the gas flow path. The catalyst trays define gas spaces and alternate gas spaces are provided with inlets for supplying a partial stream of the sulfur dioxide containing gases which are divided in the gas spaces. The gas spaces adjacent to the gas spaces provided with inlets are provided with outlets for withdrawing partial streams of the gases which have passed through the catalyst trays.

    摘要翻译： 用于将二氧化硫转化为三氧化硫的催化反应器，适用于高达每小时约500,000标准立方米的高通量。 反应器包括多个单独的反应室，每个反应室包含在气体流路中并联连接的催化剂塔板。 催化剂托盘限定气体空间，交替的气体空间设置有用于供应分配在气体空间中的含二氧化硫气体的部分流的入口。 与设置有入口的气体空间相邻的气体空间设置有用于抽出已经通过催化剂塔盘的气体的部分气流的出口。

    Production of sulfur trioxide and sulfuric acid
    9.
    发明授权
    Production of sulfur trioxide and sulfuric acid 失效
    生产三氧化硫和硫酸

    公开(公告)号：US3803297A

    公开(公告)日：1974-04-09

    申请号：US30728972

    申请日：1972-11-16

    申请人： BAYER AG

    发明人： GUTH H ,  KLEINE WEISCHEDE K ,  REHER P ,  WIESCHEN H

    IPC分类号： C01B17/76 ,  C01B17/54 ,  C01B17/765 ,  C01B17/68

    CPC分类号： C01B17/765 ,  C01B17/54

    摘要： D R A W I N G
    IN THE METHOD OF PRODUCING SULFUR TRIOXIDE AND SULFURIC ACID FROM ELEMENTAL SULFUR, THE SULFUR IS BURNED WITH OXYGEN IN MULTIPLE STAGES WITH INTERSTAGE COOLING THE SULFUR DIOXIDE GAS STREAM IS SPLIT INTO SEVERAL STREAMS AND FEED WITH OXYGEN INTO A MULTISTAGE CATALYTIC CONVERTOR. A PORTION OF THE SULFUR TRIOXIDE PRODUCED IS RECYCLED TO THE FIRST CONVERTOR STAGE TO CONTROL THE TEMPERATURE IN THE CONVERTOR. A SECOND PORTION OF THE SULFUR TRIOXIDE IS RECYCLED TO THE FIRST STAGE OF THE BURNER TO MODERATE THE TEMPERATURE THEREIN. THE LAST PORTION OF THE SULFUR TRIOXIDE IS COOLED, PART IS CONDENSED AND THE REMAINDER IS ABSORBED IN SULFURIC ACID.

    Process for preparation of so3
    10.
    发明授权
    Process for preparation of so3 失效
    制备SO3的方法

    公开(公告)号：US3592592A

    公开(公告)日：1971-07-13

    申请号：US3592592D

    申请日：1968-05-17

    申请人： RESEARCH CORP

    发明人： SCHMIDT MAX

    IPC分类号： C01B17/69 ,  C01B17/74 ,  C01B17/68

    CPC分类号： C01B17/74 ,  C07C323/00

    摘要： A PROCESS FOR PREPARING SO3 IS DISCLOSED, WHEREIN SULPHUR IS BURNED IN THE PRESENCE OF AN OXYGEN CONTAINING GAS AND THE RESULTANT SO3 IS STABILIZED TO PREVENT DECOMPOSITION INTO SO2. THE STABILIZATION MAY BE BY MEANS OF A SUITABLE STABILIZING COMPOUND, SUCH AS LEWIS BASE, OR MAY BE BY WAY OF THERMAL QUENCHING.