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    • 8. 发明授权
    • Process for the production of 2-chlorobutadiene-1,3 from
3,4-dichlorobutene-1
    • 从3,4-二氯丁烯-1生产2-氯丁二烯-1,3的方法
    • US3965203A
    • 1976-06-22
    • US437906
    • 1974-01-31
    • Lawrence A. Smith, Jr.
    • Lawrence A. Smith, Jr.
    • C07C17/00C07C17/25C07C21/21C07C67/00C07C21/20
    • C07C17/25
    • A process is described whereby 2-chlorobutadiene-1,3 is produced from 3,4-dichlorobutene-1 in a two-phase reaction system wherein the reaction predominantly occurs in the organic phase and the production of undesirable by-products, particularly 1-chlorobutadiene-1,3 and acetaldehyde, is suppressed. The practice of the process results in a brine effluent from the reactor containing small amounts of organic materials resulting in a waste product which is less polluting and more easily cleaned.The organic phase is selected from primary and secondary alcohols, alkoxyethanols and mixtures thereof, preferably alkoxyethanols wherein the alkyl group has two or more carbon atoms. Surprisingly, I have discovered that the selection of the organic phase of the reaction system is made by a screening test wherein a two-phase system of a 20% brine and 3,4-dichlorobutene-1 is prepared and the alcohol or alkoxyethanol being investigated is added to obtain equilibrium in the system. Materials selected as the organic phase material are selected from those where the product of the weight percent water in the organic phase and weight percent alcohol being investigated in the organic phase is greater than 200.
    • 描述了一种方法,其中在二相反应体系中由3,4-二氯丁烯-1产生2-氯丁二烯-1,其中反应主要发生在有机相中,并产生不期望的副产物,特别是1- 氯代丁二烯-1,3和乙醛被抑制。 该方法的实践导致来自反应器的盐水流出物含有少量有机材料,导致污染物较少并且更容易清洁的废物。
    • 10. 发明授权
    • Diolefin production and purification
    • 二烯烃生产和净化
    • US3943185A
    • 1976-03-09
    • US473341
    • 1974-05-28
    • Lloyd D. Tschopp
    • Lloyd D. Tschopp
    • C07C5/48C07C7/11C07C11/00C07C7/02
    • C07C11/00C07C5/48C07C7/11
    • A process for producing a stream of oxidatively dehydrogenated C.sub.4 hydrocarbons with substantially all of the oxygen and inert noncondensable gases removed comprising absorbing the C.sub.4 hydrocarbons in an absorber oil in a first zone; stripping oxygen and inert noncondensable gases from the mixture of adsorber oil and C.sub.4 hydrocarbons in a second zone which is operated under conditions of temperature and pressure to maintain an aqueous phase in the second zone; and withdrawing (1) a predominately aqueous phase from the second zone, (2) an overhead of predominately all of the oxygen and inert noncondensable gases and a bottoms of adsorber oil and C.sub.4 hydrocarbon substantially free of oxygen and inert noncondensable gases.
    • 一种生产氧化脱氢的C4烃的方法,其中基本上除去所有的氧气和惰性不可冷凝气体,包括吸收第一区域中的吸收剂油中的C4烃; 在温度和压力条件下操作的第二区中从吸附器油和C4烃的混合物中汽提氧气和惰性不可冷凝气体,以将水相保持在第二区域; (2)主要是所有氧气和惰性不可冷凝气体的塔顶馏出物和基本上不含氧气和惰性不可冷凝气体的吸附剂油和C4烃的塔底物。