November 7-9, 2018 The 4th China Polyolefins Conference and the first Polyolefin Special Materials Development Summit was held in Xi'an. Experts, scholars and business representatives from the polyolefin industry, around the development trend of olefin polymerization catalysts, new polyolefin products In-depth analysis of cutting-edge technologies such as development and device intelligence is in-depth discussion and exchange.
"Olefin polymerization-supported Ziegler-Natta (ZN) catalyst has high catalytic activity, is not sensitive to impurities, has relatively good stability, and is suitable for various polymerization processes, which is beneficial to the long-term stable and continuous production operation of the device. The catalyst is low in cost and relatively easy to prepare. At present, there are many domestic development and utilization, but there is still a gap compared with the world advanced level.” Fan Zhiqiang, a professor at Zhejiang University, said that although the olefin polymerization metallocene catalyst develops rapidly, the supported catalyst has comprehensive performance. Excellent, will continue to occupy a dominant position can not be replaced. Through catalyst optimization and innovation, combined with optimization of polymerization process, it is expected to achieve more accurate regulation of polyolefin structure and adjustable performance of new generation polyolefin.
Liu Bo, former president of Sinopec Yangzi Petrochemical Research Institute, said that the development of new polyolefin products is a systematic project involving various aspects such as process, equipment and control, showing marketization, serialization, customization, integration, characterization and stabilization. Features. Through the introduction of digestion and absorption and independent innovation, we must make fine general materials, enlarge and strengthen special materials, and make thick technical reserves to meet the needs of high-end market.
"Currently, the core original technology of olefin polymerization catalyst and polymerization process is still controlled by foreign countries, which is the main reason for the high import of high-end polyolefin products in China." Feng Lianfang, a professor at Zhejiang University, told the reporter. He shared the progress and application of olefin slurry polymerization technology and its intelligent reactor technology. He believed that the liquid phase + gas phase series polymerization technology has the advantages of both, and the intelligentization of the polymerization process will become a trend, helping the industry to achieve high quality and high quality. Benefit development.
At the meeting, the experts also introduced the progress of olefin polymerization gas phase process and the development of special materials for the end of the cockroach, the construction of new product research and development system, the development of intelligent control and assisted products, and the future development trend of the polyolefin industry.
In recent years, China's polyolefin production has increased rapidly. In 2017, the output of polyethylene and polypropylene reached 14.41 million tons and 20.9 million tons respectively, and the external dependence was 45% and 22% respectively. In the next three years, polypropylene and polyethylene will be expanded respectively. Over 10 million tons, the growth rate exceeds 50%, facing the increasingly fierce competition for homogenization, some high-end products rely heavily on imports, and downstream requirements are constantly improving.