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This major technical equipment was jointly developed by Beijing Chemical Industry University, Sinopec Engineering Construction Company, Yanshan Petrochemical Company, Dalian Rubber & Plastics Co., Ltd., Tianhua Chemical Machinery & Automation Design and Research Institute, and Zhejiang Zhongkong Control Technology Co., Ltd. After more than three years of joint efforts by R&D personnel, the large-scale twin-screw extrusion granulator has finally succeeded in its localization project, filling the domestic gap.
According to Cheng Weijun, deputy director of Yanshan Petrochemical Chemical Factory, the manufacturing level of the large twin-screw extrusion granulation unit reflects the latest achievements and comprehensive strengths of a country in the field of polymer blending processing technology and equipment research. In order for China's petroleum and chemical industries to achieve rapid development, advanced technology and equipment must be used as support. However, the core technology and equipment can't be purchased, and the only way is independent innovation.
According to reports, China's introduction of a set of 350,000 tons / year of twin-screw extrusion granulation unit requires about 12 million US dollars. According to China’s current ethylene production capacity, it is necessary to introduce 28 sets of large twin-screw extrusion granulation units with a capacity of 350,000 tons/year, which cost about 450 million US dollars. At present, there are 20 large and medium sized ethylene plants in China, with an ethylene production capacity of 17 million tons and a production capacity of 14 million tons, ranking third in the world. Prior to this, only three companies in Germany and Japan had the design and manufacturing capabilities of large-scale twin screw extrusion granulation units. China, as the third largest ethylene producer in the world, has no independent core technology, and large-scale ethylene key equipment can only rely on imports for a long time, causing foreign companies to monopolize the market and jointly raise prices.
In 2007, the National Development and Reform Commission formulated a special plan for the medium and long-term development of the ethylene industry, and proposed to speed up the process of localization and industrialization of major technical equipment in the ethylene industry, and strive to achieve key breakthroughs and developments in key technologies and equipment. The “Key Equipment Manufacturing Technology Development and Equipment Manufacturing of Ethylene Plants†has been listed in the current industry, product and technology catalogue that the country has focused on encouraging development. As the core equipment in the downstream process of ethylene production process, the large twin-screw extrusion granulation unit is an important part of China's domestic production of large-scale ethylene key equipment.
Good news came from Yanshan Petrochemical at the weekend, and the 200,000-ton polypropylene twin-screw extrusion granulation unit independently developed by China was successfully driven by the company at one time. The test results of the unit showed that the indicators met the production requirements. As a key equipment for polymer compounding and processing, it is the first time that a large twin-screw extrusion granulation unit has achieved localization.