利索-全球专利检索

  1. 登录
  2. 注册
发明公开
CN103102239A 一种从C10重芳烃中连续提取均四甲苯的方法 无效 - 撤回

一种从C10重芳烃中连续提取均四甲苯的方法
摘要：
本发明公开了一种从C10重芳烃中连续提取均四甲苯的方法，包括如下步骤：a、将C10重芳烃加入精馏塔，所述精馏塔塔板数为52；b、当装置达到全回流时，调节塔顶温度为185～186℃，第一侧线采出口处温度为194～202℃，塔底温度为230～235℃，所述第一侧线采出口在第15块塔板；c、采用连续中间进料方式，C10重芳烃在精馏塔的第26块板加入精馏塔，调节回流比为3～5，从塔顶、第一侧线采出口和塔底分别连续得到C10轻组分、均四甲苯富集液和C10渣油部分。本发明均四甲苯晶体纯度为99％以上，收率为90％以上，反应周期短、操作简单、能耗低，可工业化生产。
摘要（英）：

The invention discloses a method for continuous extraction of durene from C10 heavy aromatics. The method comprises the following steps: a, adding C10 heavy aromatics into a rectifying column with column plates in the number of 52; b, when the device achieves total reflux, adjusting the temperature at column top to 185-186 DEG C, the temperature at a first side-draw port to 194-202 DEG C, and the temperature at column bottom to 230-235 DEG C, wherein the first side-draw port is arranged at the fifteenth column plate; and c, adding the C10 heavy aromatics into the rectifying column from the twenty-sixth column plate by using a continuous intermediate feeding mode, adjusting a reflux ratio to 3-5, and continuously acquiring a C10 light component, a durene beneficiation solution and a C10 residue part respectively from the column top, the first side-draw port and the column bottom. The durene crystal provided by the invention has purity higher than 99%, yield higher than 90%, short reaction period, simple operation, low energy consumption and suitability for industrial production.

0/0