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    • 3. 发明授权
    • Heat recovery in production of vinyl chloride by pyrolysis of
dichloroethane
    • 通过二氯乙烷热解生产氯乙烯时的热回收
    • US4822932A
    • 1989-04-18
    • US178477
    • 1988-04-07
    • Gerhard DummerKlaus HaselwarterHermann KlausLudwig SchmidhammerRudolf Strasser
    • Gerhard DummerKlaus HaselwarterHermann KlausLudwig SchmidhammerRudolf Strasser
    • C07C17/00C07C17/25C07C17/38C07C17/383C07C21/06C07C67/00C07C17/24C07C17/34
    • C07C17/25C07C17/38B01J2219/00006Y02P20/51
    • 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.
    • 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。
    • 8. 发明授权
    • Supported catalyst, process for its production as well as its use in the
oxychlorination of ethylene
    • 负载催化剂,其生产方法及其在乙烯氧氯化中的应用
    • US5986152A
    • 1999-11-16
    • US198251
    • 1998-11-24
    • Herbert MullerStefan BosingLudwig SchmidhammerAlbin FrankKlaus Haselwarter
    • Herbert MullerStefan BosingLudwig SchmidhammerAlbin FrankKlaus Haselwarter
    • B01J23/83B01J27/122B01J35/02B01J35/10C07B61/00C07C17/08C07C17/156C07C19/045B01J23/72
    • B01J35/026B01J23/83B01J27/122C07C17/156
    • A supported catalyst includes: a) 0.5-15 wt. % of one or more Cu-II compounds, the quantitative amounts referring to copper metal; b) 0.1-8 wt. % of one or more alkali metal compounds, the quantitative amounts referring to alkali metal; c) 0.1-10 wt. % of an oxide mixture including; c1) 80-95 mole % of oxides of cerite rare earths with atomic Nos. 57 to 62, except promethium, and c2) 5-20 mole % of zirconium dioxide, where c1) and c2) must together total 100 mole % and the quantitative amount of c) refers to the oxides of the mixture, and d) the remainder up to 100 wt. % being .gamma. and/or .alpha.-aluminum oxide as support material, wherein e) the support material d) has a total pore volume in the range from 0.65 to 1.2 cm.sup.3 /g, and wherein f) the supported catalyst is present in the form of cylindrical hollow bodies having at least one passage channel, the ratio of height h to external diameter d.sup.e being less than 1.5 for diameters d.sub.e of up to 6 mm, and the ratio h/d.sub.e being less than 0.6 for diameter d.sub.e greater than 6 mm. A process for producing the supported catalyst is also described.
    • 负载催化剂包括:a)0.5-15wt。 %的一种或多种Cu-II化合物,定量为铜金属; b)0.1-8wt。 %的一种或多种碱金属化合物,定量为碱金属; c)0.1-10重量% %的氧化物混合物包括: c1)80-95摩尔%的原子号为57〜62的铈铈稀土的氧化物,除了碲,和c2)5-20摩尔%的二氧化锆,其中c1)和c2)必须总共为100摩尔% 定量的c)是指混合物的氧化物,和d)余量高达100wt。 %为γ和/或α-二氧化铝作为载体材料,其中e)载体材料d)具有在0.65-1.2cm 3 / g范围内的总孔体积,并且其中f)负载型催化剂以 具有至少一个通道的圆柱形空心体,对于直径为d至6mm,高度h与外径之比de小于1.5,直径d大于0.6的比率h / de小于0.6 。 还描述了制备负载型催化剂的方法。