Mao metal polyolefins: starting with catalyst development

In recent years, the market demand for Mao metal polyolefin products is rising rapidly, as the world's number one producer of polyolefin products, China should seize this opportunity, starting from the core catalyst development, the development of high-performance Mao metal polyolefin technology, to promote the polyolefin industry to do better and stronger, to achieve "change of lane overcarry." Several industry experts expressed this view in the interview.
industrialization into the fast lane
"Compared with the traditional Ziegler-Ata polyolefin catalyst, the mao metal catalyst has unique properties, controlling the relative molecular mass of the polymer, stereoscopic structure, copolymer monomer content, etc., thus producing high-performance polyolefin resin . Mao metal polyolefin catalyst industrialization application time is short, with its production of polyolefin products market capacity is small, but due to excellent product performance, in recent years, the market demand for Mao metal polyolefin products is rising rapidly, there have been a variety of high-performance specialty products have been recognized by the market, such as Mao metal polyethylene, Mao metal polypropylene, Mao metal polyolefin elastomer, Mao metal polyolefin lubricant (PAO) and Mao metal polyolefin wax. Yi Jianjun, director of the Polyolefin Research Office of the China Petroleum and Petrochemical Research Institute, said.
" at present, foreign countries have achieved elastomer, ultra-low density polyethylene, Twin Peaks polyethylene products industrialization. The technology is mainly concentrated in the hands of ExxonMobil, Dow Chemical, DSM, Mitsui oil and other foreign companies, of which Exxon Mobil's technical strength is the strongest. According to statistics, the world has more than 100 brands of mao metal polyolefins to achieve industrialization, last year's output of more than 10 million tons. Zhang Peng, a senior engineer at the China Petroleum and Petrochemical Research Institute, said.
the development of mao metal polyolefins in China has also entered the fast lane of industrialization. Zhang Peng introduced, in September 2007, Daqing Petrochemical 60,000 tons / year LLDPE device in China for the first time using imported Mao metal catalyst to produce Mao metal polyethylene products; Since then, Shenyang Paraffin Chemical Co., Ltd. and Dushanzi Petrochemical Co., Ltd. introduced Uunivation technology in August 2014 and December 2015, respectively, to achieve the production of Mao metal polyethylene; Qilu Petrochemical's 60,000 tons/year industrial plant successfully carried out industrialization test using the independent technology of Sinopec Beijing Chemical Research Institute.
Yijian introduced the progress made in China in recent years. In June 2017, Ha Petrochemical produced highly transparent mao metal polypropylene mPP6006 using catalyst PMP-01 on the intermittent liquid phase ontide polypropylene device, and realized the industrial production of mao metal polypropylene for the first time. The Lanzhou Center of China Petroleum and Petrochemical Institute carried out the pilot development of MPH36Y of Mao metal polypropylene fiber material at the end of 2017. Yanshan Petrochemical first achieved the production of polypropylene from mao metal on an industrial continuous unit in March 2018.
development of autonomous catalysts lags behind
"Catalysts are at the heart of technological advances in the polyolefin industry, significantly increasing polymer yields, simplifying polymerization processes, improving product quality, and expanding the range of applications." Zhang Peng said.
" but from the current domestic situation, we are in mao metal catalyst structural design, solution polymerization process development, product application research and other aspects of serious lag. Due to the introduction of technology-led, and mao metal polyolefin technology development is difficult, large investment, long development time, the current domestic research units engaged in the development of mao metal polyolefins and scattered forces. Zhang Peng said.
Yijian also believes that catalysts remain the core of the development of polyolefin processes in Mao metal. However, at present, almost all the catalysts used in the large-scale production of mao metal polyolefins in China come from foreign companies, and China has not yet set up the independent technology of mao metal polyolefin catalysts.
It is understood that the current rapid development of domestic ethylene polymerization with Mao metal catalyst, Sinopec basically achieve industrialization, PetroChina is also close to industrialization, private enterprises - Zibo new plastic development of Mao metal catalyst is only one step away from industrialization. The research and development of polypropylene-rich metal catalysts is still in its infancy. China Petroleum and Petrochemical Institute broke through the key technology of Mao metal catalyst load, solved its applicability problem in the existing polypropylene device, and successfully developed the first carrier-type Mao metal polypropylene catalyst PMP-01 that can produce transparent polypropylene.more than
measures to promote industrial applications
In today's polyolefin industry, the research and development of polyolefin catalysts and polyolefins is very active, we must seize this opportunity, it is possible to make China's polyolefin industry in a short period of time to catch up with the world's advanced level. "It is suggested that the competent authorities should combine the national petrochemical industry planning, according to the current situation of China's Mao metal polyolefin industry, set up a special fund to encourage research and development, integrate scientific and technological forces, focus on and step by step to carry out technical research, improve the necessary small test, pilot plant construction, so that the results of transformation and application development work effectively advanced," said Wang Pingfang, professor of Northwest Normal University.
Zhang Peng believes that the current focus should be on the development of polyethylene with mao metal catalyst, and strive to achieve industrialization in a relatively short period of time. At the same time, increase the development and marketing of high-end polyolefin products such as polyolefin elastomers, twin peak polyolefins and ultra-high relative molecular quality polyethylene, improve the production ratio of polypropylene pipe materials, capacitive film special materials, etc., and enhance the competitiveness of China's polyolefin industry.
" compared with traditional polyolefin resin, Mao metal polyolefin resin does have many excellent properties, but due to the relatively narrow distribution of molecular mass, the resulting processing problems also restrict the production and application of Mao metal polyolefin resin to a large extent. Therefore, we should strengthen the processing application research of Mao metal resin, so that the existing processing equipment can adapt to the characteristics of the new resin, in addition to considering the existing processing equipment screw structure, membrane gap, wind ring diameter size, but also in the processing aid selection, processing processing process to carry out a lot of research work. Zhao Dongbo, deputy director of Lanzhou Petrochemical Ethylene Plant, said.
at present, the domestic production of a small number of mao metal polyolefins is mostly in the development or trial production stage, the output is relatively small, product performance is not stable. In this regard, YiJianJun believes that in the future with Qilu Petrochemical, Daqing Petrochemical, Dushanzi Petrochemical and other polyolefin production in Mao metal scale, this problem may be resolved. And large-scale stable performance of domestic Mao metal polyolefin products into the market, will be conducive to downstream users, especially large-scale processing enterprises, thereby increasing the market demand for Mao metal products.
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