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    Process for the catalytic oxidation of ammonia and methane to hydrogen cyanide
    76.
    发明授权
    Process for the catalytic oxidation of ammonia and methane to hydrogen cyanide 失效
    将氨和甲烷催化氧化成氰化氢的方法

    公开(公告)号：US4078044A

    公开(公告)日：1978-03-07

    申请号：US712003

    申请日：1976-08-05

    申请人： James M. Whelan

    发明人： James M. Whelan

    IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J23/10 ,  B01J23/76 ,  B01J23/78 ,  C01B17/04 ,  C01B17/50 ,  C01B17/78 ,  C01B21/02 ,  C01B21/26 ,  C01B32/50 ,  C01C3/02 ,  C04B35/50 ,  F23C13/00

    CPC分类号： F23C13/00 ,  B01D53/8603 ,  B01D53/945 ,  B01J23/10 ,  B01J23/76 ,  B01J23/78 ,  C01B17/0486 ,  C01B17/508 ,  C01B17/78 ,  C01B21/02 ,  C01B21/265 ,  C01B31/20 ,  C01C3/02 ,  C04B35/50 ,  F23C13/08 ,  Y02T10/22

    摘要： A process for the oxidation of ammonia to hydrogen cyanide which comprises combining ammonia with a predetermined amount of oxygen and methane to produce hydrogen cyanide and water and passing the resulting mixture over a ceramic catalyst of the following empirical formula at a temperature between about 700.degree. and 1100.degree. C.:W.sub.k X.sub.n J.sub.(1-k-n) ZO.sub.(3.+-.m')Wherein:W is zirconium, tin or thorium or mixture thereof;X is an alkaline earth metal or mixture thereof;J is scandium, yttrium, a rare-earth element or mixture thereof;Z is a metal of the first transition series or a mixture thereof, at least 0.01% of said metal having an oxidation state other than +3;k is a number having a value of between 0 and about 0.1;m' is a number having a value of from 0 to about 0.26, provided m' has a value other than 0 when n has a value of 0; andn is a number having a value from 0 to about 0.51, provided when n has a value of 0, k has a value of between 0 and about 0.05. These mixed oxide catalysts can be used to catalytically oxidize organic compounds to various states of oxidation, ammonia, carbon monoxide, hydrogen, sulfur dioxide, and hydrogen sulfide, with oxygen, or carbon monoxide with water, sulfur dioxide or nitric oxide. The catalyst can also be employed in the catalytic removal of carbon monoxide, hydrocarbons, nitric oxides and sulfur dioxide from the exhaust gases of generating or heating plants and automobiles burning fossil fuels. In addition these catalysts can be employed to produce hydrogen cyanide from methane, ammonia and oxygen.

    摘要翻译： 一种将氨氧化成氰化氢的方法，其包括将氨与预定量的氧和甲烷结合以产生氰化氢和水，并使得到的混合物在约700℃和约700℃之间的温度下通过以下经验式的陶瓷催化剂 1100℃：WkXnJ（1-kn）ZO（3 +/- m'）其中：

    Method for removing sulfur oxide from waste gases and recovering elemental sulfur
    77.
    发明授权
    Method for removing sulfur oxide from waste gases and recovering elemental sulfur 失效
    从废气中除去硫氧化物并回收元素硫的方法

    公开(公告)号：US4041142A

    公开(公告)日：1977-08-09

    申请号：US638677

    申请日：1975-12-08

    申请人： Raymond H. Moore

    发明人： Raymond H. Moore

    IPC分类号： B01D53/86 ,  C01B17/04 ,  C01B17/78 ,  B01D47/00 ,  C01B17/02

    CPC分类号： C01B17/78 ,  B01D53/8609 ,  C01B17/0408 ,  Y10S423/12

    摘要： A continuous catalytic fused salt extraction process is described for removing sulfur oxides from gaseous streams. The gaseous stream is contacted with a molten potassium sulfate salt mixture having a dissolved catalyst to oxidize sulfur dioxide to sulfur trioxide and molten potassium normal sulfate to solvate the sulfur trioxide to remove the sulfur trioxide from the gaseous stream. A portion of the sulfur trioxide loaded salt mixture is then dissociated to produce sulfur trioxide gas and thereby regenerate potassium normal sulfate. The evolved sulfur trioxide is reacted with hydrogen sulfide as in a Claus reactor to produce elemental sulfur. The process may be advantageously used to clean waste stack gas from industrial plants, such as copper smelters, where a supply of hydrogen sulfide is readily available.

    摘要翻译： 描述了从气流中除去硫氧化物的连续催化熔盐萃取方法。 使气流与具有溶解催化剂的熔融硫酸钾盐混合物接触，将二氧化硫氧化成三氧化硫和熔融的正态硫酸钾，使三氧化硫溶剂化，从气流中除去三氧化硫。 然后将一部分负载三氧化硫的盐混合物解离以产生三氧化硫气体，从而再生正态硫酸钾。 如克劳斯反应器中所演化的三氧化硫与硫化氢反应产生元素硫。 该方法可有利地用于清洁来自诸如铜冶炼厂的工业设备的废料堆气体，其中硫化氢供应容易获得。

    Catalytic fused salt extraction process for removal of sulfur oxides from flue or other gases
    78.
    发明授权
    Catalytic fused salt extraction process for removal of sulfur oxides from flue or other gases 失效
    用于从FLUE或其他气体中除去硫氧化物的催化熔融盐提取方法

    公开(公告)号：US3855386A

    公开(公告)日：1974-12-17

    申请号：US31147172

    申请日：1972-12-04

    申请人： BATTELLE MEMORIAL INSTITUTE

    发明人： MOORE R

    IPC分类号： B01D53/86 ,  B01J35/12 ,  B01J37/34 ,  C01B17/04 ,  C01B17/58 ,  C01B17/69 ,  C01B17/74 ,  C01B17/78 ,  C25B1/00 ,  B01D47/00 ,  B01J9/04 ,  C01B17/00

    CPC分类号： B01J37/348 ,  B01D53/8609 ,  B01J35/12 ,  C01B17/0482 ,  C01B17/58 ,  C01B17/69 ,  C01B17/74 ,  C01B17/78 ,  C25B1/00

    摘要： A continuous catalytic fused salt extraction process is described for removing sulfur oxides from gaseous streams. The gaseous stream is contacted with a molten liquid potassium sulfate salt mixture at a temperature below 500* C. having dissolved V2O5 to catalytically oxidize sulfur dioxide to sulfur trioxide and molten potassium normal sulfate to solvate the sulfur trioxide to remove the sulfur trioxide from the gaseous stream. A portion of the sulfur trioxide loaded salt mixture is then placed in an electrolytic cell and with an electrical potential applied between an anode and a cathode to fume the SO3 solute and form a high purity offgas of SO3 and regenerate the molten potassium normal sulfate. The evolved SO3 may be used directly to yield a variety of useful sulfur by-products including liquid sulfur trioxide, sulfuric acids and oleums of any concentrations, liquid sulfur dioxide and elemental sulfur.

    摘要翻译： 描述了从气流中除去硫氧化物的连续催化熔盐萃取方法。 气态物流与熔融的液体硫酸钾盐混合物在温度低于500℃的温度下与溶解的V2O5接触以将二氧化硫催化氧化成三氧化硫和熔融的正态硫酸钾溶剂化三氧化硫以从气态中除去三氧化硫 流。 然后将一部分负载三氧化硫的盐混合物放置在电解槽中，并施加在阳极和阴极之间的电位以使SO 3溶质蒸发并形成高纯度的SO 3废气并再生熔融的正态硫酸钾。 演化的SO3可以直接用于产生各种有用的硫副产物，包括液态三氧化硫，硫酸和任何浓度的发烟，液态二氧化硫和元素硫。