Overdependence on crude oil has restricted the development of olefin industry in China. In order to alleviate the shortage of domestic olefin raw materials, the state has put forward the requirement that the diversification rate of olefin raw materials reach 20%. Under the guidance of national industrial policy, propane dehydrogenation, coal/methanol to olefin technology have risen, and new technologies for increasing propylene production, such as steam cracking, catalytic cracking, olefin conversion and propane dehydrogenation, have jointly formed a new pattern of diversification of olefin sources.
China’s ethylene industry has developed rapidly and its production capacity has increased rapidly, making it the second largest ethylene producer in the world after the United States. From 2014 to 2018, ethylene production capacity increased from 20.43 million tons per year to 25.2 million tons per year, with an annual composite growth rate of about 5.20%. There are more than 40 ethylene production enterprises in China. The naphtha cracking route involves 19.91 million tons of ethylene production capacity, accounting for 76% of the total ethylene production capacity in China. The other main sources are coal (methanol) to ethylene and ethane dehydrogenation.
| Gamma-PGA (gamma polyglutamic acid) |
With the diversified development of olefin raw materials, China’s polyolefin production capacity and output will continue to grow, self-sufficiency rate will continue to improve, diversified competition will further intensify; but at the same time, due to the insufficient supply of domestic high-end polyolefin products, it is heavily dependent on imports. Therefore, the high-end development of polyolefin products and the realization of import substitution will be the key direction of upgrading China’s polyolefin industry.
In recent years, our government attaches great importance to the healthy development of advanced polymer materials industry. As an important branch of advanced polymer materials, high-end polyolefin resins have received a lot of support in policy. According to the requirements of the 13th Five-Year Development Plan of New Chemical Materials Industry of Sinopec Federation, the advanced polymer materials industry will make further development in the next few years, especially in the future. The self-sufficiency rate will develop rapidly. According to Jin Lianchuang’s information, the average annual composite growth rates of four categories of high performance resins (including high-end polyolefins), special rubber, high-performance fibers and functional membrane materials in China’s advanced macromolecule materials industry are 8.83%, 8.99%, 26.19% and 7.19% respectively in 2018-2022.
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