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在化学、化工及新材料领域,世界主流工艺一直通过石油加工生产乙烯、丙烯等重要的化工基础原料。数据显示,2015年我国石油对外依存度突破了60%。相比石油资源,我国的煤炭储量比较丰富。发展以煤为原料制取石油类产品的煤化工技术,相当于把煤炭资源变成石油化工的补充原料,可替代部分原油进口。煤制烯烃的过程中,关键的“一跃”在于甲醇制烯烃技术。本文中通过综述调研介绍了低温深冷空气分离法内压缩流程,并且详细解释了在进行煤制甲醇工作过程中的工艺流程和空气深冷分离法,说明了两者之间的关系,具体分解了煤制甲醇过程中空气深冷分离的每个步骤,希望对甲醇生产和发展有所裨益。
In the chemical, chemical and new materials fields, the world’s mainstream process has been through the oil processing of ethylene, propylene and other important chemical raw materials. Data show that in 2015 China’s oil dependence on foreign countries exceeded 60%. Compared to oil resources, China’s coal reserves are abundant. Development of coal as raw material for petroleum products from coal chemical technology, the equivalent of coal resources into petrochemical supplement raw materials, alternative part of the import of crude oil. Coal-to-olefins process, the key “leap ” is the methanol-to-olefins technology. In this paper, we review the investigation of the cryogenic cryogenic air separation process, and explain in detail the process and air cryogenic separation process in the process of coal-to-methanol production, and illustrate the relationship between the two. The specific decomposition Methanol in the process of coal in the air cryogenic separation of each step, hoping to methanol production and development of some benefit.