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偏三甲苯非临氢异构化制均三甲苯工艺的研究 总被引:2,自引:0,他引:2
在M-2型复合丝光沸石催化剂上,研究了偏三甲苯液相非临氢异构化合成均三甲苯的工艺。考察了反应温度、反应压力、液态空速等因素对反应的影响,得出最佳的反应条件:反应温度310~320℃,反应压力1.5~2.0MPa,液态空速1.0~1.5h-1;在此条件下,偏三甲苯的单程转化率可达39%,均三甲苯的选择性可达66.29%。用精密精馏方法分离得到高纯度均三甲苯(质量分数大于等于98.5%),回收偏三甲苯循环使用。该工艺解决了邻甲乙苯累积的问题,满足了工业化的要求。 相似文献
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1 INTRODUCTION The column packed with Dixon gauze ring or heli-pak has been widely used for separating isotopes and isomerides for its remarkably low HETP when operated under optimum conditions. However a fatal weakness of such columns is that it works well only for small diameter columns. No matter whatever type of packing is used in the column, normally the HETP increases with the increase of the diameter of the column, and it appears that the more efficient the packing is, the more … 相似文献
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