On October 8, a message came from the other side of the ocean that the patent for invention “a selective hydrogenation catalyst (HPC) and its preparation method†declared by the Lanzhou Chemical Research Center of the China Petroleum and Petrochemical Research Institute obtained the US patent grant. This marked that the selective hydrogenation catalyst for pyrolysis gasoline fractions with independent intellectual property rights reached the international advanced level, and opened the prelude to the participation of PetroChina's petrochemical technology in the international technology division and chemical catalyst products entering the global market.
The researchers of the Institute creatively applied the new technology of electrostatic perturbation to suppress catalytic side reactions and catalyst poisoning. For the first time, the cesium, bismuth and their combined elements were introduced into the catalytic system, and electrostatic perturbation and modulation of the outer electrons of palladium atoms were performed. Its inherent electronic structure properly weakens the adsorptive power of active sites to mono-olefins and impurities, thereby greatly increasing the hydrogenation selectivity and anti-impurity performance of the catalysts, and conquering the technical problems that have plagued researchers in the field for a long time.
Industrial applications show that compared with the world-class cracked gasoline hydrogenation catalyst products, the hydrogenation selectivity of this catalyst is 11% higher, and the sulfur accumulation rate and carbon deposition rate are reduced by 30 and 22%, respectively, breaking the patent of foreign companies. Blockade and technical monopoly. At the same time, in the course of many years of industrial application, R&D personnel continuously improved the performance of the catalyst according to the actual conditions in the country. According to the different requirements of users, it achieved a series of “tailor-made and tailored†production, which not only broke the market of foreign companies. The monopoly further forced foreign products to quickly exit the domestic market.
In recent years, the conversion of cracked raw materials to diversification, heavier quality, and inferior quality has caused a change in the composition of cracked products and a dramatic increase in the content of impurities, which has led to the inability of catalysts to meet the requirements of hydrogenation feedstocks in terms of selectivity, resistance to poisoning, and stability. Seriously affect the quality of cracking products, yield and equipment energy consumption, material consumption and long-term stable operation. Therefore, CNPC set out to develop a new generation of hydrogenation catalysts for high selective pyrolysis gasoline.
Lanzhou Chemical Research Center is the earliest research institute in China dedicated to the development of pyrolysis gasoline hydrogenation catalysts. It has successively developed LY-7901, LY-8016, LY-8602, LY-9801, LY-9802, LY-2008 series pyrolysis gasoline plus Hydrogen catalysts have applied for more than 40 Chinese invention patents. The pyrolysis gasoline hydrogenation catalyst produced by the center once occupied 85% of the domestic market. In response to China's "going out" strategy for petroleum and participating in the international market competition and technological division of labor, the Petroleum and Chemical Research Institute, on the basis of summing up the experiences and lessons learned in the process of manufacturing in China, adopted the method of protecting intellectual property one step ahead of the Others. The market is applying for patent protection to do a good job of technical protection and market preparation for the future participation in international petrochemical technology competition.
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