摘要:采用四效精馏工艺对环己酮装置烷回收系统进行分离。运用Aspen Plus软件,选用NRTL模型为物性计算方法,在保证各塔塔顶醇酮含量均低于0.05wt%的前提下,以再沸器热负荷为指标,对各塔回流量、釜液出料量、产品质量等操作变量进行了模拟计算优化。得到了最佳工艺生产参数为:初馏塔回流量为27.6t/h,塔釜出料量为315t/h。烷一塔回流量为27.0t/h,塔釜出料量为320t/h。烷二塔回流量为29.5t/h,烷三塔回流量为42.7t/h,烷四塔回流量为55.2t/h,烷五塔釜液出料量为23t/h。
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