300000 tons/year glycol production process preliminary design

Abstract

乙二醇是主要用作生产聚酯纤维及织物工业制造的原料的有机化合物。也被用于工业应用，如防冻剂配方和其它工业产品。它是一种无色无味的，糖浆，甜味液体。目前，国内生产乙二醇的方法主要有两种：煤制乙二醇；环氧乙烷直接水合制乙二醇。对于煤制乙二醇，催化剂很重要，很难找到高效成本低的催化剂，过程复杂；直接水合法虽然过程简单，但是装置落后，耗能耗水量大。因此本设计采用较先进的设备—反应精馏塔，采用较新的反应精馏工艺来克服乙二醇工艺的缺点，并且利用化工模拟软件ASPEN PLUS对过程进行模拟以及优化，最后得到达到满足产品生产标准又可满足设计任务的结果。同时还对主要设备进行了选型，绘制了PID工艺流程图。

Ethylene glycol is an organic compound primarily used as a raw material in the manufacture of polyester fibers and fabric industry. A small percent is also used in industrial applications like antifreeze formulations and other industrial products. It is an odorless, colorless, syrupy, sweet-tasting liquid. At present, the two main methods to produce Ethylene glycol are: produced by coal; ethylene oxide legitimate direct water. For using coal to producing Ethylene glycol, catalyst is very important compound, it is difficult to find low-cost and efficient catalyst, and process is also complicated; although the process of ethylene oxide legitimate direct water is sample, but this method have a couple of weakness, like backward technology of these devices, energy and water consumption higher. Therefore, this design uses more advanced equipment - reactive distillation column. Using newer reactive distillation technology to overcome the shortcomings of process of producing ethylene glycol, and the use of chemical process simulation software ASPEN PLUS to simulate and optimize, and finally get to meet the production standards and to meet the design task results. Also the main equipment’s selection, draw the PID process flow diagram.