利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

12 条记录 (耗时 0.02 秒)

    Vinyl chloride production
    3.
    发明授权
    Vinyl chloride production 失效
    氯乙烯生产

    公开(公告)号：US4788357A

    公开(公告)日：1988-11-29

    申请号：US074137

    申请日：1987-07-16

    申请人： Gerhard Dummer ,  Klaus Haselwarter ,  Hermann Klaus ,  Ludwig Schmidhammer ,  Rudolf Strasser

    发明人： Gerhard Dummer ,  Klaus Haselwarter ,  Hermann Klaus ,  Ludwig Schmidhammer ,  Rudolf Strasser

    IPC分类号： C07C17/00 ,  C07C17/25 ,  C07C17/383 ,  C07C21/06 ,  C07C67/00

    CPC分类号： C07C17/25 ,  C07C17/383

    摘要： An improved method of producing vinyl chloride by pyrolysis of purified 1,2-dichloroethane at temperatures from 480.degree. C. to 540.degree. C. at a pressure of 10 to 36 bar absolute with partial utilization of the heat content of the flue gases from the pyrolysis furnace firing to preheat liquid 1,2-dichloroethane almost to its boiling temperature utilizing the flue gas waste heat to generate steam, cool the pyrolysis gas mixture in several stages and separate the hydrogen chloride from the pyrolysis gas mix in a hydrogen chloride column as well as separate vinyl chloride from the pyrolysis gas mix in a vinyl chloride monomer column.

    摘要翻译： 一种改进的制备氯乙烯的方法，其通过在绝对压力为10至36巴的压力下，在480℃至540℃的温度下热解纯化的1,2-二氯乙烷，部分利用来自 利用废气废热，利用烟气废热预热液体1,2-二氯乙烷几乎达到沸点，分几个阶段冷却热解气体混合物，将氯化氢与热解气体混合物在氯化氢柱中分离， 以及来自氯乙烯单体柱中的热解气体混合物的单独的氯乙烯。

    Process for thermal cracking of 1,2-dichloroethane to form vinyl chloride
    4.
    发明授权
    Process for thermal cracking of 1,2-dichloroethane to form vinyl chloride 失效
    1,2-二氯乙烷热裂解形成氯乙烯的方法

    公开(公告)号：US4746759A

    公开(公告)日：1988-05-24

    申请号：US923327

    申请日：1986-10-27

    申请人： Gerhard Dummer ,  Klaus Haselwarter ,  Hermann Klaus ,  Ludwig Schmidhammer ,  Rudolf Strasser

    发明人： Gerhard Dummer ,  Klaus Haselwarter ,  Hermann Klaus ,  Ludwig Schmidhammer ,  Rudolf Strasser

    IPC分类号： C07C17/00 ,  C07C17/25 ,  C07C21/06 ,  C07C67/00 ,  C07C17/24 ,  C07C17/34

    CPC分类号： C07C17/25 ,  B01J2219/00006

    摘要： An improved process for the preparation of vinyl chloride from 1,2-dichloroethane (EDC) wherein 0.10 to 0.15 % by weight of carbon tetrachloride based on EDC, is used as a cracking promoter and the CHCl.sub.3 content is limited to less than 200 ppm. Before being fed to the cracking zone, the EDC is brought almost to the boiling point at 15 to 31 bar and then expanded to 10 to 16 bar with flashing EDC vapors and the fraction which has remained liquid is vaporized externally, and the combined EDC gas streams are heated, after being fed into the cracking furnaces, so that the energy required for cracking is already supplied in the first 75 to 85% of the reaction zone, whereby a conversion of 60 to 70% is obtained at residence time from 10 to 25 seconds and the exit temperature from the reaction zone is 485.degree. to 510.degree. C.

    摘要翻译： 用于从1,2-二氯乙烷（EDC）制备氯乙烯的改进方法，其中基于EDC的0.10至0.15重量％的四氯化碳用作裂化促进剂，CHCl 3含量限于小于200ppm。 在进料到裂化区之前，EDC几乎达到15至31巴的沸点，然后用闪烁的EDC蒸气膨胀至10至16巴，剩余液体的馏分从外部蒸发，并将组合的EDC气体 在进料到裂解炉中之后，将物流加热，使得裂化所需的能量已经在反应区的第一个75-85％的比例中提供，从而在10至10的停留时间内获得60至70％的转化率 25秒，反应区出口温度为485〜510℃。

    Heat recovery in production of vinyl chloride by pyrolysis of dichloroethane
    8.
    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

    申请人： Gerhard Dummer ,  Klaus Haselwarter ,  Hermann Klaus ,  Ludwig Schmidhammer ,  Rudolf Strasser

    发明人： Gerhard Dummer ,  Klaus Haselwarter ,  Hermann Klaus ,  Ludwig Schmidhammer ,  Rudolf Strasser

    IPC分类号： C07C17/00 ,  C07C17/25 ,  C07C17/38 ,  C07C17/383 ,  C07C21/06 ,  C07C67/00 ,  C07C17/24 ,  C07C17/34

    CPC分类号： C07C17/25 ,  C07C17/38 ,  B01J2219/00006 ,  Y02P20/51

    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。

    Purification by hydrogenation of hydrogen chloride containing acetylene obtained by the thermal cracking of 1,2-dichloroethane
    9.
    发明授权
    Purification by hydrogenation of hydrogen chloride containing acetylene obtained by the thermal cracking of 1,2-dichloroethane 失效
    通过1,2-二氯乙烷的热裂解获得的含有乙炔的氯化氢的氢化进行纯化

    公开(公告)号：US4388278A

    公开(公告)日：1983-06-14

    申请号：US316521

    申请日：1981-10-29

    申请人： Ludwig Schmidhammer ,  Gerhard Dummer ,  Rudolf Straszer

    发明人： Ludwig Schmidhammer ,  Gerhard Dummer ,  Rudolf Straszer

    IPC分类号： C07C5/05 ,  B01J23/00 ,  C01B7/01 ,  C01B7/07 ,  C07C1/00 ,  C07C5/08 ,  C07C7/167 ,  C07C67/00

    CPC分类号： C01B7/0706

    摘要： The invention is a process for the purification of hydrogen chloride formed during the thermal cracking of 1,2-dichloroethane, by hydrogenating the acetylene impurities with excess hydrogen, at pressures of from 8 to 20 bar absolute and at temperatures of from 120.degree. to 180.degree. C., using platinum or palladium supported catalysts, wherein, according to the invention, carrier materials having a specific surface area of not more than 5 m.sup.2 /g are used, the hydrogen excess used is a function of the acetylene content, the gas mixture, after reaching a temperature of approximately 70.degree. C., is permitted a dwell time of not more than 0.8 second before it enters the catalyst, and the temperature, pressure and volume flow rates are dependent on one another within narrow limits.The purified hydrogen chloride is used for oxychlorination.

    摘要翻译： 本发明是一种在1,2-二氯乙烷的热裂解过程中形成的氯化氢的纯化方法，通过在8至20巴的绝对压力和120至180℃的温度下氢化具有过量氢气的乙炔杂质 使用铂或钯负载的催化剂，其中根据本发明，使用比表面积不大于5m 2 / g的载体材料，所用的氢过量是乙炔含量的函数，气体 混合物在达到约70℃的温度后，允许其进入催化剂之前不超过0.8秒的停留时间，并且温度，压力和体积流速在狭窄的范围内彼此依赖。 纯化的氯化氢用于氧氯化。

    Novel heat recovery process
    10.
    发明授权
    Novel heat recovery process 失效
    新型热回收工艺

    公开(公告)号：US4606742A

    公开(公告)日：1986-08-19

    申请号：US743161

    申请日：1985-06-10

    申请人： Gerhard Dummer ,  Ludwig Schmidhammer ,  Peter Hirschmann ,  Gerhard Stettner

    发明人： Gerhard Dummer ,  Ludwig Schmidhammer ,  Peter Hirschmann ,  Gerhard Stettner

    IPC分类号： F23G7/00 ,  B01D53/68 ,  B01D53/77 ,  F23J15/00 ,  F23J15/02 ,  B01D53/14

    CPC分类号： B01D53/68

    摘要： In a method of recovering heat from flue gas resulting from the combustion of chlorinated organic compounds at 900.degree. to 1300.degree. C. at a pressure of 0.9 to 1.5 bar absolute whereby the flue gas is cooled with the recovery of heat and hydrogen chloride is processed, the improvement comprising (a) cooling the flue gas in a first step to a temperature of 250.degree. to 350.degree. C. with a contact time of 0.05 to 0.15 seconds, (b) cooling the flue gas in a second step to a minimum of 140.degree. C. with a contact time of 1.3 to 2.0 seconds, the cooling medium in both stages being water flowing at an initial temperature of 100.degree. to 140.degree. C. in step (b) counter to the flue gas flow direction and added to cooling stage (a) at a temperature of 200.degree. to 220.degree. C. and (c) cooling the flue gas in a third stage to its dew point and scrubbing it with water to recover the hydrogen chloride therein in solution.

    摘要翻译： 在从0.9-1.5巴绝对压力下在900〜1300℃的氯化有机化合物的燃烧产生的烟道气中回收热量的方法，由烟道气被回收而冷却，加入氯化氢 改进包括（a）在第一步骤中将烟道气冷却至250℃至350℃的温度，接触时间为0.05至0.15秒，（b）将第二步骤中的烟道气冷却至最小 的接触时间为1.3至2.0秒，两个阶段的冷却介质是在步骤（b）中在100至140℃的初始温度下流动的水与烟气流动方向相反，并加入 到冷却阶段（a），并且（c）在第三阶段将烟道气冷却至其露点，并用水洗涤以在溶液中回收其中的氯化氢。