甲醇制烯烃工艺水系统运行问题研究进展

Progress on water system operation ofmethanol to olefin process

随着甲醇制烯烃技术发展的不断成熟,其瓶颈集中表现在水系统,比如急冷/水洗塔压差异常、系统管线堵塞和换热设备效率下降等。为了降低其对平稳生产的影响,目前主流处理方法包括高温萃取剂、分散剂的注入,旋液分离设备的使用和工艺流程改造以及高效沸腾床过滤器使用等。本文从生产实际出发,根据各方法的优缺点,采取多方法联合实施应对问题,对实际生产具有一定指导意义。

With the development and maturation of methanol to olefin technology,its bottleneck problems are concentrated in the water system,such as quench/wash tower pressure difference,system pipeline blockage and heat transfer equipment efficiency decline.In order to reduce its influence on stable production,the current mainstream treatment methods include injection of high temperature extractant and dispersant,use of spinning separation equipment and process modification,and use of high efficiency boiling bed filter.Based on the actual production,we comprehensively consider the advantages and disadvantages of different methods,and find that the implementation of multiple methods has a certain guiding significance for the actual production.