关键词: 油制烯烃, 煤制烯烃, 聚乙烯, 聚丙烯, 经济效益, 瓶颈

Abstract: With the successful commercialization of the world's first coal olefin project, Shenhua Baotou coal chemical project, a number of coal olefin plants have been put into operation in China in recent years. The rise of coal olefins has brought new vitality to the polyolefin market, and the rapid development of China's plastic market has gradually formed the three-pronged situation of China's polyolefin supply, Sinopec and coal olefins. From the point of view of product profits, although the market price of olefins produced by oil is generally higher, due to the constraints of cost factors, especially under the influence of high international oil prices in recent years, the overall profit of olefins produced by oil is lower than that of coal olefins. With the gradual growth of coal olefins, it has slowly occupied the market for common materials. Coupled with the impact of imported materials on the high-end market, the domestic polyolefin market will eventually show an excess situation in the near future. Issues such as cost, environmental protection, high-end product technology research, and energy supply are also the main battlefields for oil olefins and coal olefins. The economic benefits of products and the breakthrough bottleneck of coal olefins are also the keys to winning the market.

Key words: olefins produced by oil, coal olefins, polyethylen, polypropylene, economic benefits, bottlenecks