吉林石化公司苯酚丙酮装置中设计有一套α-甲基苯乙烯回收单元，由于2001改造时对原有精馏塔进行利旧使用，且工艺流程设计不合理导致生产的α-甲基苯乙烯产品存在纯度低、颜色发黄等质量问题，严重影响了α-甲基苯乙烯作为产品销售。本项目在流程模拟研究和实验室研究的基础上，重新设计了工艺流程，提出改造方案，在保持主体设备不动的前提下，采用脱轻塔和成品塔均增设侧线采出的方式，成功地解决了α-甲基苯乙烯产品质量问题。
A set of alpha methyl styrene recovery unit is designed in the phenol acetone plant of Jilin Petro-chemical Co. In 2001, the transformation of the original rectification tower for the use of the old, and unreasonable process design resulted in that the production of alpha methyl styrene products had quality problem, such as purity is low, color is yellow and so on, which had serious impact on the alpha methyl styrene as product sales. In this project, based on a process simulation research and laboratory research, we redesign the process and put forward the reform plan. Under the premise of keeping the main equipment unchanged, using the way of light off tower and finished tower being added with the sidestreams, the alpha methyl styrene production quality issue is successfully solved.
