China Drying Network News On December 27, 2012, Datang Duolun Coal Chemical Company polypropylene (PP) branch after a week of continuous testing, the polypropylene catalyst polymerization process of the domestic catalyst triethyl aluminum performance The indicators met the production requirements and achieved the goal of localizing triethylaluminum. It is reported that the use of domestic co-catalyst triethylaluminum can save 1.56 million yuan annually for Duolun Coal Chemical Company.
In December 2012, Datang Duolun Coal Chemical Company's first-line reactors for polypropylene units had been operating at full capacity, and the consumption of various raw materials and auxiliary agents was also increasing. Triethylaluminum, one of the catalyst additives, was one of them. Triethylaluminum is a dangerous substance that encounters water explosion and air combustion. As a co-catalyst in the propylene polymerization catalyst system, it can reduce the tetravalent titanium of the catalyst into active trivalent titanium in the polymerization of propylene. Plays a vital role.
The polypropylene plant of the company is the last one of the entire chemical plant. Since the commissioning, the triethylaluminum catalyst has been imported from Japan. Each tank is 1.2 tons, equivalent to RMB 80,000. In order to fundamentally reduce the production cost, the technical personnel of the PP branch decided to replace the existing triethylaluminum with a domestic product after several discussions, screenings, and performance tests. Each can saves 15,000 yuan.
On December 20th, 2012, the domestic triethyl aluminum test began, and the technicians carefully operated and paid attention to the changes of various operational indicators of the reactor. After testing, during the use of domestic triethyl aluminum in the reactor, the material polymerization reaction rate did not decrease, and the product quality was not affected, and the device was always in a stable operation state.
Calcium Zinc Compound Stabilizer For PVC Cable Sheath
Calcium zinc composite stabilizer for PVC cable sheath is an additive used for PVC cable sheath. It is composed of a mixture of calcium and zinc salts, used to improve the thermal stability and weather resistance of PVC cable sheaths. The addition of calcium zinc composite stabilizers in the manufacturing process of PVC cable sheaths can effectively prevent the decomposition and degradation of PVC materials at high temperatures, and improve the heat resistance performance of cable sheaths. At the same time, it can also enhance the UV and oxidation resistance of PVC cable sheath, extending the service life of the cable. Calcium zinc composite stabilizer for PVC cable sheath is an efficient and environmentally friendly additive that can improve the thermal stability and weather resistance of the cable sheath, and extend the service life of the cable.
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