Three-tower continuous distillation process of ethyl acetate from aldehyde condensation and purification by gas-phase oxidation of acetic acid and ethylene were also discussed.

加恒沸剂共沸蒸馏和乙酸萃取反应精馏过程。 乙醛缩合法生产乙酸乙酯的三塔连续精馏过程以及乙烯与乙酸气相催化反应的加水精制工艺过程。

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The corrosion of aldehyde condensation solution has been a great difficult technical problem in polyvinyl alcohol fibre production industry, which has been hindering the normal operation of the plant.

维纶醛化液腐蚀是维纶行业的一大技术难题，一直困扰着工厂的正常生产。

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It can be used as catalyst or catalyst carrier for dewaxing via isomerization, selective hydrogenation, cracking, condensation of alcohol and aldehyde, etc.

可在异构脱蜡、选择性加氢及裂化、醇醛缩合等反应中用作催化剂的活性组分和载体。

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