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发明公开
CN104387219A 一种乙烯装置碱洗塔黄油抑制剂及其制备方法 有权 转让

一种乙烯装置碱洗塔黄油抑制剂及其制备方法
摘要：
本发明为一种乙烯装置碱洗塔黄油抑制剂及其制备方法；特征在于：抑制剂由A组份、B组份、C组份组成，各组分百分含量为：A组分10-30％，B组分10-30％，C组分40-80％；所述A组分制备方法为：将80％的水合肼搅拌升温至70℃，另将环氧乙烷导入以进行气液接触反应，未反应的环氧乙烷尾气以水吸收；待温度下降后进行减压蒸馏；蒸去过量的水合肼和系统的游离水；蒸出的水合肼再循环使用，得到淡黄色油状液体A组分产品；所述B组分选自为甲基脲、乙基脲、正丙基脲、正丁基脲；所述C组分为无水乙醇；所述的制备方法；是在常温、常压和不断搅拌下，将A组分、B组分加入到C组分中，直至各组分完全溶解，即制得乙烯装置碱洗塔黄油抑制剂。
摘要（英）：

The invention discloses an ethylene-apparatus caustic-wash-tower butter inhibitor and a preparation method thereof. The technical scheme is characterized in that the inhibitor is composed of, in percent by weight, 10-30% of a composition A, 10-30% of a composition B and 40-80% of a composition C; a preparation method of the composition A comprises, stirring hydrazine hydrate with the concentration of 80%, heating to 70 DEG C, introducing ethylene oxide to perform gas-liquid contact reaction, and absorbing unreacted ethylene oxide with water, performing reduced-pressure distillation after the temperature is reduced, and distilling to remove excess hydrazine hydrate and free water in the system, so as to obtain a light-yellow oily liquid product which is the composition A, and recycling the distilled-out hydrazine hydrate; the composition B is selected from methylurea, ethylurea, N-propylurea and N-butylurea; the composition C is anhydrous ethanol; and the preparation method for the inhibitor comprises adding the composition A and the composition B into the composition C at normal temperature under normal pressure with continuous stirring until all composition are completely dissolved, so as to prepare the ethylene-apparatus caustic-wash-tower butter inhibitor.

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