On July 17, ZCPT 200,000 tons/year polypropylene plant successfully produced special materials for automobile bumpers for the first time, To further meet the needs of downstream high-end customers. The product is an anti-impact copolymerization product, with high impact strength and medium rigidity at low temperature. It is a special material for car bumpers, with large demand, considerable economic benefits and broad market prospects.

The product ethylene content is high, continuous production is difficult, especially the impact reaction system test is great. Zhongke Refining and Chemical continues to collect feedback information from downstream customers, and continuously further finalize the performance of counterimpact copolymerization series products. Under the guidance of experts from Beihua Institute, the additive system of similar products in China is upgraded and optimized by reference; Give full play to the role of the model worker studio, actively coordinate, carefully prepare the pilot production plan, repeatedly examine the additive formula and production parameters, refine and improve the brand switching instructions; Evaluate the possible operational risks in the production process, formulate emergency measures, and organize teams to learn in advance to ensure the smooth completion of production tasks.

The conversion of production is also the first time for the device to use a new catalyst, which has higher reactive activity and difficult reaction control. The inner operation carefully monitors the plate, pays close attention to the opening of the chilled water valve of the pre-polymerization reactor, and timely adjusts the amount of catalyst to avoid the reaction flying temperature. At the same time, by controlling the circulating air volume of the compressor, to ensure that the polymer powder flow is good. In view of the challenges such as the higher amount of ethylene added to the product, the pressure and the material level are difficult to control, the internal operation accurately controls the reaction balance of the two reactors to ensure the material level is controllable; Fine adjustment of ethylene feed amount, ethylene propylene ratio, hydrogen and electron donor concentration and other key parameters, improve product performance, shorten the switching cycle, to ensure product quality. External inspection monitoring, pay close attention to the appearance of the particles, and timely sampling analysis, to ensure that product quality is controllable and stable.