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On June 16, after the user's trial, Fushun Petrochemical developed the polyethylene special material for large hollow containers using the titanium-based catalyst with independent intellectual property rights to meet the needs of users
.
In recent years, with the technological upgrading of the domestic and international logistics industry, the demand for polyethylene resin used in the production of packaging containers has shown a rapid growth trend, especially the large hollow special containers larger than 150 liters used for the packaging of chemicals, food and medicine, etc.
The domestic market demand for ethylene special materials is more than 500,000 tons per year
.
Because of this, Fushun Petrochemical and China Petroleum and Chemical Research Institute have in-depth cooperation to carry out the first industrial application test of the titanium-based catalyst-PLE-01 developed by it on a 350,000-ton/year high-density polyethylene plant to produce large hollow containers.
Polyethylene special material FHM8255A, and a success
.
Fushun Petrochemical's 350,000-ton/year high-density polyethylene plant adopts the low-pressure slurry polyethylene production process, and titanium-based catalysts are used for the first time
.
Since it is the first time to change the original catalyst system, and the first time to apply a catalyst with a polymerization activity of 30,000 gPE/gcat, in order to ensure the safety and stability of production, the plant has formulated detailed plans for 10 aspects such as the inability to control the reaction effectively and the blockage of the discharge line.
The fallback plan was adopted, and the production of FHM8255A was converted to FHM8255A at the end of production using the material of the overhaul front pipe
.
In the trial production, the titanium-based PLE-01 catalyst showed good process applicability, the catalyst feeding was smooth, the activity release process was stable, the powder drying process was good, and the extrusion granulation system was optimized to run smoothly, and the polymerization activity reached 30000gPE.
/gcat or above
.
