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    Method for producing acrylonitrile, catalyst for use therein and method for preparing the same
    1.
    发明授权
    Method for producing acrylonitrile, catalyst for use therein and method for preparing the same 有权
    生产丙烯腈的方法，其中使用的催化剂及其制备方法

    公开(公告)号：US06723869B1

    公开(公告)日：2004-04-20

    申请号：US10110129

    申请日：2002-04-09

    申请人： Kunio Mori ,  Yutaka Sasaki ,  Kenichi Miyaki ,  Hirokazu Watanabe

    发明人： Kunio Mori ,  Yutaka Sasaki ,  Kenichi Miyaki ,  Hirokazu Watanabe

    IPC分类号： C07C25326

    CPC分类号： C07C253/26 ,  B01J23/8876 ,  Y02P20/52 ,  C07C255/08

    摘要： For the production of acrylonitrile by ammoxidation of propylene, there is provided a catalyst capable of giving a high yield for a long period of time. In producing acrylonitrile by ammoxidation of propylene, there is used a metal oxide as a catalyst, which metal oxide contains iron, antimony, molybdenum, bismuth, potassium, an F element, a G element, an H element and silica as essential components in a specific composition ratio, and in which metal oxide iron antimonate exists as a crystal phase, provided that the F element is at least one element selected from the group consisting of magnesium, calcium, strontium, barium, manganese, cobalt, nickel, copper, silver, zinc and cadmium, the G element is at least one element selected from the group consisting of chromium, aluminum, gallium and indium, and the H element is at least one element selected from the group consisting of yttrium, lanthanum, cerium, praseodymium, neodymium and samarium.

    摘要翻译： 为了通过丙烯的氨氧化生产丙烯腈，提供了能够长期获得高产率的催化剂。 在通过丙烯氨氧化制备丙烯腈时，使用金属氧化物作为催化剂，该金属氧化物含有铁，锑，钼，铋，钾，F元素，G元素，H元素和二氧化硅作为必需成分 F元素是选自镁，钙，锶，钡，锰，钴，镍，铜，银中的至少一种元素，其中金属氧化物锑酸铁作为结晶相存在。 ，锌和镉，G元素是选自铬，铝，镓和铟中的至少一种元素，H元素是选自钇，镧，铈，镨， 钕和钐。

    Method of quenching gaseous acrylonitrile and hydrogen cyanide product stream
    3.
    发明授权
    Method of quenching gaseous acrylonitrile and hydrogen cyanide product stream 失效
    淬灭气态丙烯腈和氰化氢产物流的方法

    公开(公告)号：US06339169B1

    公开(公告)日：2002-01-15

    申请号：US09372005

    申请日：1999-08-11

    申请人： Charles R. Hunt ,  Daniel E. Steinmeyer

    发明人： Charles R. Hunt ,  Daniel E. Steinmeyer

    IPC分类号： C07C25326

    CPC分类号： C07C253/26 ,  C07C253/34 ,  C07C255/08

    摘要： The present invention provides an improvement in a process and apparatus for manufacturing acrylonitrile by the vapor phase ammoxidation of a hydrocarbon. The invention comprises contacting the gaseous product stream with a quench fluid in a reverse jet scrubber. The quenching fluid is injected counter-current to the gas flow, and the gas velocity is sufficient to reverse the flow direction of the water, thereby forming a standing wave or froth zone wherein the quench is rapidly achieved. The quench fluid may be obtained from many sources, but is preferably obtained from a waste process stream emanating from a subsequent recovery or purification step. The quench fluid may contain acid to facilitate removal of ammonia from the gas stream. The quench fluid that is not vaporized may be recirculated. Impurities and contaminants may be removed from the quench fluid prior to recycle. In a most preferred embodiment, the quench fluid is not cooled during recirculation, and the cooling process is essentially adiabatic, with the sensible heat of the hot gaseous stream being converted to latent heat in the form of vapor.

    摘要翻译： 本发明提供了通过烃的气相氨氧化制备丙烯腈的方法和装置的改进。 本发明包括使气态产物流与反向喷射洗涤器中的骤冷流体接触。 淬火流体与气流逆流注入，气体流速足以反转水的流动方向，从而形成驻波或泡沫区，其中快速实现骤冷。 骤冷流体可以从许多来源获得，但优选地从随后的回收或纯化步骤发出的废物流中获得。 骤冷流体可含有酸，以便于从气流中除去氨。 未蒸发的骤冷液体可以再循环。 杂质和污染物可以在循环之前从骤冷流体中除去。 在最优选的实施方案中，骤冷流体在再循环过程中不被冷却，并且冷却过程基本上是绝热的，热气流的显热转化为蒸气形式的潜热。