甲醇醋酸联产系统中碳的高效回收与利用

摘要

介绍了兖矿国泰化工有限公司甲醇醋酸联产装置存在的问题,并综合考虑碳的高效循环利用,对甲醇脱碳系统和固定层连续富氧造气工艺安全性进行了技术改进与优化,对生产装置各工序所产出的CO2气通过处理后回收利用,形成CO2高效循环利用的多联产系统.改造后CO2纯度提高,醋酸生产规模提升到30万t/a.%Efficient and cyclic utilization of the carbon from the methanol and acetic acid polygeneration system was introduced.Through technical optimization and improvement,the CO2 from all sections of the production facilities was recycled after proper treatment,and a polygeneration system with efficient and cyclic utilization of CO2 was established.After revamping,the CO2 purity became higher and the acetic acid production capacity rose to 300 000 t/a.