Oxidative dehydrogenation and cracking of paraffins with a promoted
cobalt catalyst
    32.
    发明授权
    Oxidative dehydrogenation and cracking of paraffins with a promoted cobalt catalyst 失效
    用促进的钴催化剂氧化脱氢和裂解石蜡

    公开(公告)号:US4497971A

    公开(公告)日:1985-02-05

    申请号:US552557

    申请日:1983-11-16

    摘要: A paraffin or mixture of paraffins having from 2 to 5 carbon atoms is oxidatively dehydrogenated in the presence of a cobalt based catalyst composition which has been calcined in the absence of oxygen. The catalyst composition comprises cobalt; phosphorus; at least one promoter selected from the group consisting of zinc, titanium, zirconium, niobium, indium, lead and bismuth; at least one alkali metal and oxygen. The catalyst composition may also contain sulfur and/or a halogen. If the feed to the oxidative dehydrogenation process contains paraffins having more than two carbon atoms, some cracking of such paraffins will also occur at the conditions at which the oxidative dehydrogenation process is carried out.

    摘要翻译: 在已经在不存在氧气的情况下煅烧的钴基催化剂组合物存在下,具有2至5个碳原子的链烷烃或链烷烃的混合物被氧化脱氢。 催化剂组合物包括钴; 磷; 选自锌,钛,锆,铌,铟,铅和铋的至少一种助催化剂; 至少一种碱金属和氧。 催化剂组合物还可以含有硫和/或卤素。 如果氧化脱氢方法的进料含有具有多于2个碳原子的链烷烃,则在进行氧化脱氢过程的条件下也会发生这种链烷烃的一些裂解。

    Method of burning a fossil fuel
    39.
    发明授权
    Method of burning a fossil fuel 失效
    燃烧化石燃料的方法

    公开(公告)号:US4076486A

    公开(公告)日:1978-02-28

    申请号:US711999

    申请日:1976-08-05

    申请人: James M. Whelan

    发明人: James M. Whelan

    摘要: A method of burning a fossil fuel and air with the emmission of an exhaust gas consisting essentially of atmospheric gases, carbon dioxide and water vapor and essentially free of carbon monoxide, hydrocarbons and nitric oxide, which comprises burning the fossil fuel at a temperature between 1000.degree. C. and 1500.degree. C. with less than the stoichiometric amount of atmospheric oxygen required for complete combustion of the fossil fuel to yield a combustion gas containing uncombusted fossil fuel, partially combusted fossil fuel, water vapor, carbon dioxide, carbon monoxide, and atmospheric nitrogen, said carbon dioxide and carbon monoxide being in the ratio of 100 parts carbon dioxide to between 1 and about 11 parts carbon monoxide; combining said combustion gas with a predetermined amount of an oxygen containing gas to give at least a 1% excess of the stoichiometric amount of oxygen for oxidizing the uncombusted and partially combusted fossil fuel and carbon monoxide; and passing the resulting mixture over a novel ceramic catalyst at a temperature between about 200.degree. C. and about 1000.degree. C. The usable heat energy of said combustion gas may be employed for work. The fossil fuel may also contain sulfur which is oxidized to sulfur trioxide by said catalyst in the presence of excess oxygen.

    摘要翻译: 一种燃烧化石燃料和空气的方法,其中排放了基本上由大气,二氧化碳和水蒸气组成的废气,基本上不含一氧化碳,碳氢化合物和一氧化氮,其中包括在1000℃以下的温度下燃烧化石燃料 低于化学燃料的化学计量量的大气氧,产生含有未燃烧的化石燃料,部分燃烧的化石燃料,水蒸气,二氧化碳,一氧化碳和 所述二氧化碳和一氧化碳的比例为100份二氧化碳与1至约11份的一氧化碳; 将所述燃烧气体与预定量的含氧气体组合,以产生至少1%的化学计量量的氧气,用于氧化未燃烧和部分燃烧的化石燃料和一氧化碳; 并将所得混合物在约200℃至约1000℃的温度下通过新型陶瓷催化剂。所述燃烧气体的可用热能可用于工作。 化石燃料还可以含有硫,其在过量的氧的存在下被所述催化剂氧化成三氧化硫。