Abstract: The article introduces the general process of Shenhua Baotou coal to light olefins demonstration project，which is composed of coal gasification，CO shift and purification，methanol synthesis，methanol to olefin，light olefin recovery，and PE/PP production units. During the construction and operation of the project，technologies like the coal to light olefins integration，engineering，commissioning and operation，C4 processing，waste water treatment，etc. have been developed and mastered. The project commercial operation and results during the past 3 years are also summarized with a conclusion that the coal to light olefins demonstration project has established safe and stable operation and generated good economic returns. Finally，the successful operation of the coal to olefin demonstration project makes China the first country in the world which has developed this commercialized technology. It is also of great importance to China’s efforts to lower the import dependence of oil and basic chemical raw materials.

Key words: coal to light olefins, demonstration project, technology development, project progress

摘要： 介绍了神华包头煤制低碳烯烃示范工程的工艺总流程，包括煤气化，合成气变换与净化，甲醇合成，甲醇制烯烃，烯烃分离，烯烃聚合生产聚乙烯、聚丙烯等工艺过程。总结该工程在建设和生产运营过程中，开发和掌握了煤制烯烃系统集成技术、工程化技术、开工和运行技术、C4深加工技术、污水处理技术等。文章还介绍了工程商业化运行情况，指出3年的商业化运行结果表明，煤制烯烃示范工程运行安全稳定，并创造了较好的经济效益。总结指出煤制烯烃示范工程的成功运营使中国成为世界上首个掌握此项工业化技术的国家，对中国降低石油和基础化工原料对外依存度具有重要意义。

关键词: 煤制低碳烯烃, 示范工程, 技术开发, 工程进展