摘要
煤经甲醇制化工产品的新技术在我国兴起,并且呈现出产能快速增长的势头,文章分析了采用粗甲醇单塔分离的方案,实现甲醇脱水制二甲醚装置对甲醇原料的技术要求。利用稳定塔脱除粗甲醇中的轻组分杂质后,作为甲醇制二甲醚装置的原料时,重组分杂质在甲醇气化塔内脱除。方案可以避免以粗甲醇为原料生产二甲醚技术中,由于CO2等多种轻组分杂质含量高,导致二甲醚精馏能耗上升,影响产品质量的杂质含量高等问题。与采用精甲醇为原料,经甲醇脱水生产二甲醚相比,实施粗甲醇单塔分离制甲醇原料,简化了甲醇分离的操作过程,降低了粗甲醇精制过程的设备投资和生产成本,降低了二甲醚的成本,有利于提高煤经甲醇制二甲醚项目的竞争力。
In recent years, coal to Dimethyl Ether via methanol technology rises with rapid capacity growth. The thesis analyzes technical requirements of methanol feedstock through single tower separation in DME units. As compared with using refined methanol as feedstock, single tower separation technology not only simplifies the separation process, but also lowers down the refin-ing process, equipment investment and production cost, which highly improves the competitiveness of to DME via methanol projects.
出处
《神华科技》
2014年第2期75-78,共4页
Shenhua Science and Technology
关键词
甲醇合成工艺
精馏
二甲醚
Methanol Synthesis Process
Rectification
Dimethyl Ether
