Removal of acetylene from products of 1,2-dichloroethane pyrolysis
    4.
    发明授权
    Removal of acetylene from products of 1,2-dichloroethane pyrolysis 失效
    从1,2-二氯乙烷热解产物中除去乙炔

    公开(公告)号:US4482770A

    公开(公告)日:1984-11-13

    申请号:US241281

    申请日:1981-03-06

    IPC分类号: C01B7/07 C07C17/38

    CPC分类号: C07C17/38 C01B7/0706

    摘要: An improved process for the removal of acetylene from a hydrogen chloride stream in which the acetylene is converted to vinyl chloride by contact with a hydrochlorination catalyst, the improvement comprising, prior to contacting the stream with the hydrochlorination catalyst, contacting said stream with a catalyst comprising a noble metal, preferably of the platinum group, or salt or oxide thereof, supported or unsupported, at a temperature of between about 50.degree. and about 200.degree. C. and a pressure between about 8 and about 20 bar absolute.

    摘要翻译: 一种用于从氯化氢料流中除去乙炔的改进方法,其中通过与氢氯化催化剂接触将乙炔转化为氯乙烯,其改进包括在将料流与氢氯化催化剂接触之前,使所述料流与催化剂接触,所述催化剂包含 优选铂族的贵金属或其盐或氧化物,在约50至约200℃的温度和约8至约20巴绝对压力之间的负载或未负载。

    Heat recovery in production of vinyl chloride by pyrolysis of
dichloroethane
    5.
    发明授权
    Heat recovery in production of vinyl chloride by pyrolysis of dichloroethane 失效
    通过二氯乙烷热解生产氯乙烯时的热回收

    公开(公告)号:US4822932A

    公开(公告)日:1989-04-18

    申请号:US178477

    申请日:1988-04-07

    摘要: In a method of treating the reaction product of pyrolysis of 1,2-dichloroethane to form vinyl chloride and hydrogen chloride with multiple stage cooling and distillation separation of the reaction product and recycle of unreacted 1,2-dichloroethane to the pyrolysis step, the improvement comprising direct cooling of the reaction product immediately after leaving the pyrolysis step, within 1 sec from a temperature range of 480.degree. to 540.degree. C. down to 150.degree. to 250.degree. C., charging the cooled product into a quench column, recovering the vapors from the head of the quench column and indirectly cooling the same by heat exchange to at least its condensation point, the heat exchange media being at least one member of the group consisting of (a) 1,2-dichloroethane to be fed in heated condition to the pyrolysis unit, (b) air used as combustion air to fire the pyrolysis zone, (c) the sump of the hydrogen chloride column as defined above, (d) liquid hydrogene chloride to be evaporated and, (e) water, to dissipate heat not used within the measures according to the present invention.

    摘要翻译: 在处理1,2-二氯乙烷热解反应产物形成氯乙烯和氯化氢的方法中,多级冷却和蒸馏分离反应产物并将未反应的1,2-二氯乙烷再循环到热解步骤中,改进 包括在离开热解步骤后立即直接冷却反应产物,在480℃至540℃的温度至150℃至250℃的1秒内,将冷却的产物装入骤冷塔中,回收 来自骤冷塔头部的蒸气并通过热交换间接地冷却至至少其冷凝点,所述热交换介质是由(a)1,2-二氯乙烷组成的组中的至少一个组分,所述组分由待加热的 (b)用作燃烧空气来燃烧热解区的空气,(c)如上所述的氯化氢柱的贮槽,(d)待蒸发的液体氯化烯,(e) 水,以消散根据本发明的措施中不使用的热量。

    Process for oxychlorination of ethylene
    8.
    发明授权
    Process for oxychlorination of ethylene 失效
    乙烯氧氯化方法

    公开(公告)号:US4754088A

    公开(公告)日:1988-06-28

    申请号:US13285

    申请日:1987-02-11

    CPC分类号: C07C17/02 C07C17/156

    摘要: In a process for preparation of 1,2-dichloroethane by chlorination of ethylene-containing reaction vent gases from the oxychlorination of ethylene in the presence of a catalyst carrier impregnated with metal compounds wherein the waste from the oxychlorination stage are chlorinated, the improvement comprising preheating the ethylene-containing waste gases to at least 50.degree. C. and then chlorinating the ethylene at 100.degree. to 300.degree. C. at a pressure of 1 to 7 bar with a space velocity of 100 to 5000 h.sup.-1 related to standard conditions in the presence of at least one metal compound selected from the group consisting of chlorides and oxides of manganese, nickel and cobalt supported on a catalyst carrier with reduced formation of oxychlorinated by-products.

    摘要翻译: 在通过氯化来自乙烯的氧氯化反应的含乙烯的反应排放气体在浸渍有金属化合物的催化剂载体(其中氯氧化阶段的废物被氯化)的情况下制备1,2-二氯乙烷的方法中,改进包括预热 含乙烯废气至少50℃,然后在1至7巴的压力下在100至300℃下以100至5000h -1的空间速度将乙烯氯化为与标准条件相关的 存在至少一种金属化合物,其选自负载在催化剂载体上的氯化物和锰,镍和钴的氧化物,并减少氧氯化副产物的形成。

    Process for the work-up of residues of chlorination
    9.
    发明授权
    Process for the work-up of residues of chlorination 失效
    氯化残留物的处理工艺

    公开(公告)号:US4540837A

    公开(公告)日:1985-09-10

    申请号:US519969

    申请日:1983-08-03

    CPC分类号: A62D3/38 A62D2101/22

    摘要: A process for the work-up of chlorination residues by dissolving the same at temperatures between 100.degree. and 180.degree. C. in chlorine- and oxygen-containing hydrocarbons having a ratio by weight of hydrogen to chlorine of 0.028-0.06:1, a ratio by weight of oxygen:carbon of 0.0038-0.0089:1, and an atomic ratio of carbon:hydrogen of 1:1.1-1.9 and/or in hydrocarbons, boiling between 160.degree. and 380.degree. C. at one bar abs. and having an atomic ratio carbon:hydrogen of 1:1.85-2.0 so as to obtain a liquid preparation having a ratio by weight of hydrogen:chlorine of 0.028-0.05:1.

    摘要翻译: 将氯化残留物在100-180℃的温度下溶解在含氢气和含氧烃的烃中,其中氢与氯的重量比为0.028-0.06:1,其比例为 的氧:碳为0.0038-0.0089:1,碳:氢原子比为1:1.1-1.9,和/或在沸点为160- 380℃之间的烃中,在一个bar abs下。 并且具有1:1.85-2.0的原子比碳:氢,以获得氢:氯的重量比为0.028-0.05:1的液体制剂。