A novel catalyst for high-temperature deacidification of the methanol to olefin(MTO) product was developed,which can solve the dew-point corrosion of organic acid in the MTO process.The deacidification reaction conditions of the catalyst were optimized.Under conditions of temperature 480 ℃,pressure 0.1 MPa,WHSV no more than 2.3 h-1,organic acid content was below 5.0 × 10-6(W) after 1 600 h running.Distribution of products was not affected by applying of the deacidification catalyst.Based on the catalyst effect,a new process of high-temperature deacidification of MTO products was proposed,and the energy recovery process was designed.The novel process was simulated by means of Aspen Plus software.The results showed that when the high-temperature deacidification unit was added and high-temperature heat recovery network was optimized,the total energy consumption of the full process can be reduced by 24.5％ compared with the traditional process.%针对甲醇制烯烃工艺中存在的有机酸露点腐蚀问题,开发了新型甲醇制烯烃产品气高温脱酸催化剂,并优化了催化剂脱酸工艺条件.在反应温度480℃、压力0.1 MPa、重时空速不大于2.3 h-1时,可实现MTO产品气中有机酸组分的高效脱除,催化剂可长周期稳定运行1 600 h,产物中有机酸含量小于5.0×10-6(w),且对产物分布无影响.基于脱酸催化剂的效果,提出了甲醇制烯烃高温脱酸节能新工艺,设计了高温产物的能量回收流程.采用Aspen Plus过程模拟软件对新工艺进行模拟计算.模拟结果表明,引入高温脱酸反应单元并优化产品气高温热回收网络后,与传统工艺相比,新工艺的全流程总能耗降低24.5％.
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