The world's largest coal-based ethylene-vinyl acetate copolymer (EVA) project-Baofeng Energy's annual output of 250,000 tons of EVA project. Since it was put into operation in early February, production has been stable. The current output load has increased to 90.4%, achieving stable operation. Baofeng Energy has thus set an industry precedent in using coal instead of oil to produce EVA, opening up the entire industrial chain and product chain of coal-based polyolefins.

It is reported that the project uses coal as raw material, undergoes pressurized gasification, transformation, and purification of pulverized coal, and uses low-pressure methanol synthesis technology to produce MTO grade methanol. Then, it uses DMTO unit and olefin separation to produce polymer-grade ethylene and propylene, polymer-grade ethylene and vinyl acetate copolymerize to produce EVA.

Industry experts said that the cost per ton of Baofeng Energy's coal-based EVA products has obvious advantages over that of oil-based EVA. One is because of the advanced technology. The project selects the Basell high-pressure pipe process technology in Germany. The technical and economic indicators in the process package design have reached the international advanced level, and have the advantages of high yield and low energy consumption of the device. Second, because the industrial chain is perfect. The project supports the construction of a vinyl acetate project with an annual output of 100,000 tons, forming a complete raw material supply guarantee system.

According to Liu Yuanguan, president of Baofeng Energy, China's current import dependence on high-end products such as EVA photovoltaic materials and hot melt adhesives is close to 40%. Baofeng Energy's 250,000-ton coal-to-EVA project production capacity accounts for 9.26% of China's total EVA production capacity. The commissioning of this project can effectively fill the import gap of high-end products such as EVA in China and inject new strong momentum into ensuring national energy security.

He said that Baofeng Energy EVA project has high-end products, complete categories and wide applications. It can produce 22 brands, enabling the switching of products of different brands on one production line. Among them, the VA content of 11 brands is as high as 30%. The products are of high purity and have good flexibility, ductility, transparency, film forming property, stability and insulation. They are mainly used for photovoltaic adhesive films, foaming, and hot melts. Adhesives and other fields can fully cover the market's diversified demand for high-end EVA materials.

Since the construction of Baofeng Energy EVA project started, the construction speed has also set many industry records. Among them, the debugging of primary and secondary compressors of key equipment has set the fastest record in the industry. The hydraulic oil system only took 25 days to pass the oil transportation, which is compared with similar projects. The construction period is shortened by more than 20 days; the high-pressure circulating gas heat exchanger and high-pressure pipeline of the secondary compressor system only took 17 days to complete purging, which is a shorter construction period than similar projects by more than 43 days. The construction period only took 40 months, and all EVA1803 products currently produced are qualified. Source: Sinochem New Network