浅谈中水回用技术在甲醇厂的实施

Reusing Technology of the Reclaimed Water in the Methanol Plant

川西北气矿甲醇厂(15万吨/年)以中坝气田须二气藏的优质天然气为原料,采用"一段转化、低压合成、三塔精馏、汽提法回收甲醇、MEA溶液回收烟气CO2、VPSA法回收驰放气中的H2和富CO2气"的生产工艺。概述了中水回用在该厂的实施,利用新技术、新方法对工艺废水进行处理,实施中水回用,实现节约、清洁、安全、可持续的发展。

Northwestern Sichuan Methanol Plant(150,000 t /a) is a chemical plant.The main material is the high-quality natural gas,which comes from T3X2 gas reservoir in Zhongba Gas Field.The process are 'one conversion,low pressure synthesis,three tower rectify,methanol reclaiming through stripping,CO2 recovery with MEA,the hydrogen and rich CO2 recovery with VPSA method'.This article discussed the plant craft improvement,the recycling water treatment,the sewage treatment,and outlined the reusing situation of reclaimed water in this plant.In order to fulfill saving,cleaning,safe production and sustainable development,the new techn