合成气直接制低碳烯烃技术进展与经济性分析

摘要

合成气直接制低碳烯烃是近年来研究较多的石油替代路线合成重要有机化学品的工艺之一。本文对该工艺的技术进展,包括催化剂和工艺的开发情况进行了综述,认为高催化活性、高选择性催化剂是打破产品分布受ASF规律限制的关键,而反应器和新工艺的开发也可提高低碳烯烃的收率,减少CO2排放,并通过与其它成熟技术的组合,推进该工艺的工业化进程。由初步的技术经济性分析可见,与传统蒸汽裂解和经甲醇制烯烃工艺相比,合成气直接制低碳烯烃工艺具有较强的经济竞争力。%The production of light olefins from syngas is one of the hot topics to prepare important organic chemicals from non-oil resources.Technical progress in the process,including research on catalysts,reactors and process,was summarized.It is believed that highly active and selective catalysts are key to break the limit of ASF product distribution.Meanwhile,new reactors and novel processes development also contribute to the high yield of light olefins,CO2 emission reduction and acceleration of process commercialization via the combination of the process with other existing technologies.Compared with conventional steam cracking and methanol to olefins process,the direct production of lower olefins from syngas is economically competitive.