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    • 1. 发明申请
    • MULTI-STAGE PROCESS AND APPARATUS FOR RECOVERING DICHLOROHYDRINS
    • 用于回收二氯乙烯的多级处理和装置
    • WO2009126415A1
    • 2009-10-15
    • PCT/US2009/037487
    • 2009-03-18
    • DOW GLOBAL TECHNOLOGIES INC.HOOK, Bruce, D.TIRTOWIDJOJO, DanMERENOV, Andrei
    • HOOK, Bruce, D.TIRTOWIDJOJO, DanMERENOV, Andrei
    • C07C29/82C07C31/42B01D3/36
    • C07C29/82B01D3/14B01D3/36C07C31/36
    • A process and apparatus for recovering dichlorohydrins from a mixture comprising dichlorohydrins, one or more compounds selected from esters of dichlorohydrins, monochlorohydrins and/or esters thereof, and multihydroxylated- aliphatic hydrocarbon compounds and/or esters thereof, and optionally one or more substances comprising water, chlorinating agents, catalysts and/or esters of catalysts is disclosed. The mixture is distilled or fractionated to separate a lower boiling fraction comprising dichlorohydrin(s) from the mixture to form a higher boiling fraction comprising the residue of the distillation or fractionation. The higher boiling fraction is distilled or fractionated to separate remaining dichlorohydrin(s) from the above mixture to form an even higher boiling fraction comprising the residue of the distillation or fractionation. At least some of the lower boiling fraction and the dichlorohydrin(s) are recovered. Advantages include more efficient recovery of dichlorohydrins for a given distillation column, less waste due to avoiding the conditions conducive to the formation of heavy byproducts, reduced capital investment in recovery equipment, and reduced energy utilization while maintaining the quality of dichlorohydrin product produced and not increasing the amount of undesired byproducts formed.
    • 一种用于从包含二氯代醇的混合物中回收二氯代醇的方法和装置,一种或多种选自二氯丙醇,一氯代醇和/或其酯的化合物和多羟基化脂族烃化合物和/或其酯的化合物,以及任选的一种或多种包含水的物质 ,公开了氯化剂,催化剂和/或催化剂的酯。 将混合物蒸馏或分馏以从混合物中分离包含二氯丙醇的低沸点馏分以形成包含蒸馏或分馏残余物的较高沸点馏分。 将较高沸点馏分蒸馏或分馏以从上述混合物中分离剩余的二氯代醇,以形成包含蒸馏或分馏残余物的更高沸点馏分。 回收至少一些较低沸点馏分和二氯代丙醇。 优点包括对于给定的蒸馏塔更有效地回收二氯代醇,由于避免了有利于形成重质副产物的条件而减少了浪费,减少了回收设备的资本投入,并降低了能源利用率,同时保持了生产的二氯丙醇产品的质量并且不增加 形成不希望的副产物的量。
    • 7. 发明申请
    • PROCESS FOR PRODUCING AN OXIRANE
    • 生产氧化锡的方法
    • WO2011017401A1
    • 2011-02-10
    • PCT/US2010/044354
    • 2010-08-04
    • DOW GLOBAL TECHNOLOGIES, INC.CRAMPTON, Hannah, L.CARLBERG, Philip, J.WEST, David, H.HOOK, Bruce, D.FAN, William, W.FORLIN, Anna
    • CRAMPTON, Hannah, L.CARLBERG, Philip, J.WEST, David, H.HOOK, Bruce, D.FAN, William, W.FORLIN, Anna
    • C07D301/12
    • C07D301/12Y02P20/52
    • A multiple liquid phase composition and process for preparing an oxirane product, such as epichlorohydrin, including a reaction mixture of: (a) at least one olefin, wherein the olefin is selected from one of (i) an aliphatic olefin or substituted aliphatic olefin, with the proviso that the aliphatic olefin is not propylene, (ii) a cycloaliphatic olefin, (iii) an aromatic olefin, (iv) a cycloaromatic olefin, and (v) mixtures thereof; (b) at least one peroxide compound, (c) at least one catalyst, and (d) and a solvent mixture; wherein the solvent mixture comprises at least (i) at least one alcohol or a combination of alcohols, and (ii) at least one non-reactive co-solvent; wherein the solvents are mixed at a predetermined concentration; wherein the non-reactive co- solvent has a different boiling point than the oxirane product; and wherein the oxirane product partitions into a high affinity solvent during the reaction. The process of the present invention advantageously produces a waste stream with no significant amount of sodium chloride (NaCl). In one embodiment, the present invention includes a process for preparing epichlorohydrin from allyl chloride and hydrogen peroxide including reacting (a) an allyl chloride with (b) hydrogen peroxide, in the presence of (c) a titanium silicalite-1 (TS-1) catalyst and (d) in the presence of a predetermined amount of a mixed solvent system; wherein the mixed solvent system includes at least (i) methanol and (ii) at least one non-reactive co-solvent.
    • 一种多液相组合物和用于制备环氧乙烷产物如表氯醇的方法,包括:(a)至少一种烯烃的反应混合物,其中烯烃选自(i)脂族烯烃或取代的脂族烯烃, 条件是脂族烯烃不是丙烯,(ii)脂环族烯烃,(iii)芳族烯烃,(iv)环芳族烯烃和(v)它们的混合物; (b)至少一种过氧化物化合物,(c)至少一种催化剂,和(d)和溶剂混合物; 其中所述溶剂混合物至少包含(i)至少一种醇或醇的组合,和(ii)至少一种非反应性助溶剂; 其中所述溶剂以预定浓度混合; 其中所述非反应性助溶剂具有与环氧乙烷产物不同的沸点; 并且其中环氧乙烷产物在反应期间分成高亲和力溶剂。 本发明的方法有利地产生没有显着量氯化钠(NaCl)的废物流。 在一个实施方案中,本发明包括由烯丙基氯和过氧化氢制备环氧氯丙烷的方法,包括在(c)钛硅沸石-1(TS-1)存在下使(a)烯丙基氯与(b)过氧化氢反应 )催化剂和(d)在预定量的混合溶剂体系的存在下; 其中所述混合溶剂系统至少包括(i)甲醇和(ii)至少一种非反应性助溶剂。