CAJ | 학술논문

根据甲醇制低碳烯烃(MTO)产物分布特点，提出了对传统的前脱丙烷流程的改进，针对脱甲烷塔耗能高乙烯损失量大的问题，通过在脱甲烷塔后加一洗涤塔的方式避免了耗能巨大的深冷分离，同时又保证了烯烃产品的收率和纯度，最终乙烯的质量收率可达99.7%，丙烯的质量收率可达99.3%，乙烯的纯度可达99.98%。采用Aspen Plus模拟软件，选择RK-SOVE物性方法，应用系统中的RadFrac精馏模块对流程进行模拟优化，通过灵敏度分析得到回流比、塔板数、进料位置等工艺参数，为该工艺的开发提供理论依据。
근거갑순제저탄희경(MTO)산물분포특점，제출료대전통적전탈병완류정적개진，침대탈갑완탑모능고을희손실량대적문제，통과재탈갑완탑후가일세조탑적방식피면료모능거대적심랭분리，동시우보증료희경산품적수솔화순도，최종을희적질량수솔가체99.7%，병희적질량수솔가체99.3%，을희적순도가체99.98%。채용Aspen Plus모의연건，선택RK-SOVE물성방법，응용계통중적RadFrac정류모괴대류정진행모의우화，통과령민도분석득도회류비、탑판수、진료위치등공예삼수，위해공예적개발제공이론의거。
A method based on the characteristics of Methanol to Light Olefins (MTO) is proposed to improve the traditional depropanizer before cryogenic-separation process. This paper solved the problem of the high energy consumption for demethanizer and large amount of ethylene loss by adding a scrubbing tower before the demethanizer. Finally, the quality of the ethylene yield up to 99.7%, the quality of the propylene yield up to 99.3%and the purity of ethylene up to 99.98%. Simulation software Aspen Plus was used in this article. Selecting the physical method of RK-SOVE and the rectification module of RadFrac, the reflux ratio, number of column plate, feeding locations and other technological parameters were determined through sensitivity analysis in Aspen Plus. This article provided a theoretical basis for process development.