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    • 8. 发明授权
    • Processes for refining butyl acrylate
    • 精制丙烯酸丁酯的方法
    • US06605738B1
    • 2003-08-12
    • US08859143
    • 1997-05-20
    • Fungau HoVivek Julka
    • Fungau HoVivek Julka
    • C07C6748
    • C07C67/54Y02P20/582C07C69/54
    • Crude butyl acrylate streams, e.g., from the reaction of butanol and acrylic acid, are refined using a splitter distillation column to yield a butyl acrylate- and heavies-containing bottoms fraction and an overhead fraction containing dibutyl ether, butyl acetate, butanol and butyl acrylate. The bottoms fraction is then subjected to separation, e.g., by distillation, to separate heavies from the bottoms fractions and to recover butyl acrylate. A process for the production of butyl acrylate is also disclosed, which process comprises not only the above-mentioned refining steps but also includes the steps of withdrawing from the splitter distillation column the overhead fraction and distilling the overhead fraction to recover a bottoms stream containing butanol and butyl acrylate, at least a portion of which could be recycled for reaction with acrylic acid to make butyl acrylate, and recovering the separated heavies, at least a portion of which could be recycled to a reaction zone for the production of butyl acrylate. At least 10,000 lb(avoir) quantities of a butyl acrylate product comprising at least 99.8 wt % butyl acrylate and containing not more than about 200 ppm butyl ether and not more than about 200 ppm butyl acetate are producible.
    • 粗丁基丙烯酸酯流,例如从丁醇和丙烯酸的反应中使用分离器蒸馏塔进行精制,得到含丙烯酸丁酯和重质基的塔底馏分和含有二丁基醚,乙酸丁酯,丁醇和丙烯酸丁酯的塔顶馏分 。 然后将塔底馏分进行分离,例如通过蒸馏分离塔底馏分中的重质物并回收丙烯酸丁酯。 还公开了制备丙烯酸丁酯的方法,该方法不仅包括上述精制步骤,而且还包括从分离器蒸馏塔中抽出塔顶馏分并蒸馏塔顶馏分以回收含有丁醇的塔底物流的步骤 和丙烯酸丁酯,其至少一部分可以再循环用于与丙烯酸反应以制备丙烯酸丁酯,并回收分离的重质物,其至少一部分可以再循环到用于生产丙烯酸丁酯的反应区中。 可生产至少10,000磅(阿维诺)量的包含至少99.8重量%丙烯酸丁酯和不超过约200ppm丁基醚和不超过约200ppm乙酸丁酯的丙烯酸丁酯产物。
    • 10. 发明申请
    • Process for conducting equilibriun-limited reactions
    • 进行平衡限制反应的方法
    • US20060094895A1
    • 2006-05-04
    • US10544817
    • 2004-02-19
    • Leah PattersonFungau Ho
    • Leah PattersonFungau Ho
    • C07C69/02
    • C07B41/12C07C67/08C07C67/327Y02P20/582C07C69/54
    • This invention relates to a process for conducting equilibrium-limited reactions, such as esterification and alcoholysis reactions, that uses two reaction zones. The first reaction zone operates under reaction conditions that retain at least a portion of the product in a liquid phase, and at least a portion of the liquid from the first reaction zone is introduced into a second reaction zone which operates under conditions sufficient to crack heavies, for example, Michael-addition heavies, formed in or introduced into said second reaction zone and to vaporize at least a portion of the product upon production thereof. Such a process allows for removal of product from the reaction system while catalyst desirably remains in the reaction system.
    • 本发明涉及一种使用两个反应区进行平衡有限反应的方法,如酯化和醇解反应。 第一反应区在反应条件下操作,该反应条件保留产物在液相中的至少一部分,并且来自第一反应区的至少一部分液体被引入第二反应区,其在足以破裂重质的条件下操作 例如,形成或引入所述第二反应区的迈克尔加成物重质物,并在其生产时汽化至少一部分产物。 这种方法允许从反应体系中除去产物,同时催化剂理想地保留在反应体系中。