摘要
甲醇制丙烯(MTP)装置在生产丙烯的同时,产出大量含低浓度甲醇的废水,采用传统单塔分离甲醇和水能耗较大。本文在单塔分离的基础上,采用双效精馏技术,在有效分离甲醇和水的同时大幅度降低了分离能耗。本文首先对逆流、平流和顺流双效精馏技术的分离和节能效果进行了对比和优选,并对优选分离方案的工艺参数进行了考察及优化。结果表明,在MTP装置废水处理中,平流双效精馏技术为较优的节能方案。与单塔分离相比,在实现分离目标的同时可节约能耗20.04%左右,达到了节能降耗的目的。
Methanol to propylene（MTP） device in production of propylene, and produce lots of low concentration methanol waste water, using the traditional single-tower separation methanol and water results in larger energy consumption. Based on the single-tower separation, using double-effect distillation technology, while the effective separation of methanol and water substantially reduces energy consumption. Firstly, the separation and energy saving effect of counterflow, advection and downstream double-effect distillation techniques were compared and optimized, then the process parameters of preferred separation technology were investigated and optimized. The results showed that in the MTP device wastewater treatment, advection double-effect distillation technology solutions for optimum energy efficiency. Compared to single-tower separation, while achieving the goal of the separation, reducing energy consumption about 20.04 %, reaching the energy saving purpose.
出处
《计算机与应用化学》
CAS
2015年第6期717-722,共6页
Computers and Applied Chemistry
关键词
双效精馏
MTP
废水处理
甲醇
节能技术
double-effect distillation
MTP
wastewater treatment
methanol
energy-saving technologies
