会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明授权
    • Process for separating water from mixtures thereof with vinyl acetate
and acetic acid
    • 从乙酸乙烯酯和乙酸与其混合物中分离水的方法
    • US4353783A
    • 1982-10-12
    • US201752
    • 1980-10-29
    • Gunter RoscherKarl-Heinz SchmidtHorst LangnerHermann NeuAladar LienerthDominik DempfKlaus Kaiser
    • Gunter RoscherKarl-Heinz SchmidtHorst LangnerHermann NeuAladar LienerthDominik DempfKlaus Kaiser
    • C07C67/055C07C67/54C07C69/15B01D3/36
    • C07C67/055C07C67/54B01J2219/1942
    • Process for separating water from a gas mixture, obtained in the manufacture of vinyl acetate by reacting ethylene with acetic acid and oxygen in contact with catalysts containing palladium or palladium compounds in the gaseous phase said gas mixture consisting essentially of acetic acid, vinyl acetate, water, carbon dioxide and ethylene, wherein(a) the gas mixture leaving the reaction zone is condensed to give a condensate containing the major portion of acetic acid, vinyl acetate and water and(b) an acetic acid solution containing the residual amount of vinyl acetate and water being prepared by absorption of the non-condensed gas in acetic acid, is characterized in that(c) the condensate obtained in step (a) and the solution obtained in step (b) are introduced separately from each other into the same distillation column, the feeding point of the condensate being above the feeding point of the solution, the water is distilled off at the head of said column as azeotrope together with the vinyl acetate and(d) the water phase is removed from the distillate separating into a water phase and a vinyl acetate phase.
    • 从气相混合物中分离水的方法,所述气体混合物是通过使乙烯与乙酸和氧气在气相中与含有钯或钯化合物的催化剂接触而在乙酸乙烯酯的制备中获得的,所述气体混合物主要由乙酸,乙酸乙烯酯,水 ,二氧化碳和乙烯,其中(a)离开反应区的气体混合物被冷凝,得到含有主要部分的乙酸,乙酸乙烯酯和水的冷凝物和(b)含有残留量的乙酸乙烯酯的乙酸溶液 和通过在乙酸中吸收非冷凝气体制备的水,其特征在于(c)将步骤(a)中获得的冷凝物和步骤(b)中获得的溶液彼此分开引入相同的蒸馏 柱,冷凝水的进料点高于溶液的进料点,水在所述塔的头部被蒸馏出来,作为共沸物一起 h乙酸乙烯酯和(d)从分离成水相和乙酸乙烯酯相的馏出物中除去水相。