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    • 78. 发明授权
    • Depolymerization method for resource recovery from polymeric wastes
    • 聚合废物资源回收解聚方法
    • US5369215A
    • 1994-11-29
    • US107281
    • 1993-08-16
    • Gerald A. Platz
    • Gerald A. Platz
    • C07B63/02C07C4/22C07C4/04C07C4/06
    • C07B63/02C07C4/22B29B17/02B29L2030/00C07C2527/232Y02W30/622Y02W30/68Y10S241/37Y10S264/912Y10S425/044
    • Polymeric feedstocks, such as scrap or waste tires, rubber, and plastics, in a size range of -6 to +25 mesh are washed with an organic solvent to remove stabilizing additives which have migrated to the surface of the polymer particles, thus eliminating the stabilizers from participation in subsequent reactions and allowing the final production of more pure monomeric products. The polymer particles are exposed to ozone under conditions to cause stress cracking, fissuring and cleavage of the polymer feedstock particles. The ozonated polymer particles are depolymerized to produce one or more monomeric compounds, with the reaction taking place rapidly and occurring in the presence of a system of one or more catalysts which may be metallic salts. The depolymerization is accomplished under conditions of elevated temperatures and reduced pressure, the conditions being less severe than those conditions associated with thermal pyrolysis. The monomeric compounds are recovered by conventional means from otherwise waste polymers and are recycled. Other products of this invention may be collected and recycled or disposed of with no adverse impact on the environment.
    • 用有机溶剂洗涤尺寸范围为-6至+25目的聚合物原料,例如废料或废轮胎,橡胶和塑料,以除去迁移到聚合物颗粒表面的稳定添加剂,从而消除 稳定剂参与后续反应并允许最终生产更纯的单体产品。 聚合物颗粒在引起应力开裂,裂缝和聚合物原料颗粒裂开的条件下暴露于臭氧。 臭氧化的聚合物颗粒被解聚以产生一种或多种单体化合物,反应发生迅速并且在一种或多种可以是金属盐的催化剂的体系存在下发生。 解聚在升高的温度和降低的压力条件下完成,条件不如热分解条件那么苛刻。 通过常规方法从另外的废聚合物中回收单体化合物并且被再循环。 本发明的其它产品可以被收集和再循环或处理,对环境没有不利的影响。
    • 79. 发明授权
    • Process for the thermal pyrolysis of hydrocarbons using an electric
furnace
    • 使用电炉对烃进行热解的方法
    • US5321191A
    • 1994-06-14
    • US972782
    • 1992-11-09
    • Jacques AlagyPaul BroutinChristian BussonJerome Weill
    • Jacques AlagyPaul BroutinChristian BussonJerome Weill
    • C10G9/24C07C4/04
    • C10G9/24Y10S585/921Y10S585/926
    • A process for the thermal pyrolysis of hydrocarbons in a reactor (1) of elongate shape comprising at a first end supply means (5) for a gaseous mixture containing at least one hydrocarbon, at the opposite end discharge means (10) for the effluents produced and between these two ends supply means (9) for effluent cooling fluid, the reactor comprising in a first part (first end side) a plurality of electric heating means (3) enclosed by casings (4) disposed in substantially mutually parallel layers perpendicular to the axis of the reactor, in such a way as to define between the casings and/or the casings and the walls (22), spaces or passages for circulation of the gaseous mixtures and/or effluents. The heating means heat the passages in successive, individual, transverse sections which are substantially perpendicular to the axis of the reactor. The reactor comprises means for introducing into the casings (4) a gas G known as a casing gas which preferably contains water vapour and/or hydrogen. The permeability of the casings is sufficient to permit diffusion, at least at certain points, of at least a part of the gas G from inside the casings to the outside of the casings, the gas G then being diluted in the gaseous mixture.
    • 一种用于在细长形状的反应器(1)中热解烃的方法,该方法包括在第一端供应装置(5),用于含有至少一种烃的气态混合物,在相对的端部排出装置(10)用于所产生的流出物 并且在这两个端部之间,用于流出物冷却流体的供应装置(9),所述反应器包括在第一部分(第一端侧)中的多个电加热装置(3),所述多个电加热装置(3)由壳体(4)包围, 反应器的轴线以限定壳体和/或壳体和壁(22)之间的方式,用于气态混合物和/或流出物循环的空间或通道。 加热装置加热基本上垂直于反应器轴线的连续的,单独的横向部分中的通道。 反应器包括用于将优选含有水蒸气和/或氢气的称为外壳气体的气体G引入壳体(4)的装置。 壳体的渗透性足以允许至少在某些点处将气体G的至少一部分从壳体内部扩散到壳体的外部,然后将气体G稀释在气体混合物中。