Breaking through 70 years of foreign technology monopoly to pick the "pearl" of polyurethane crown

fat/ring isocyanate (ADI) is the core raw material for the production of high-grade polyurethane, and its prepared polyurethane material has become a key base material to support the development of aerospace industry, high-end equipment, automobile industryChina has approved several sets of imported technology to build ADI devices, all due to foreign technical blockade and strandedWanhua Chemical after 17 years of unremitting efforts, finally broke the foreign 70 years of technology monopoly, the successful development of ADI industry chain manufacturing technology, took this polyurethane industry crown "pearl." At last week's conference on scientific and technological innovation in the petrochemical industry, Wanhua Chemical Executive Vice President described the development process of the manufacturing technology of the whole industry chain of fat/ring isocyanate, which was the result of the Science and Technology Progress AwardADI product technology is blocked
polyurethane is a polymer generated by isocyanate (MDI, TDI, ADI) and polyol, various additive reactions, isocyanate is the most core raw material of polyurethane, in which the fatty isocyanic acid The sub-acetylene is ADI and its representative varieties are isoketone diisocyanate (IPDI), 16-hexamethyl diisocyanate (HDI), and dicyclic hexalythane diisocyanate (H12MDI)Adi prepared polyurethane material sits extremely good anti-aging, exposure to sun, yellowing performance, is to support the aerospace industry, high-end equipment, automotive and other industries to develop the key basic materials, but also coatings, adhesives, artificial leather and other traditional industries green upgrade of the key raw materials, has been the polyurethane industry crown "pearl" reputationin THE three representative varieties of ADI, IPDI is the most ideal solid rocket propellant curing agent, long-term by the Paris Commission to restrict the export of China, by foreign technology and product blockade, China can only be forced to adopt the poor performance of TDI curing system; H12MDI is the key monomer for the preparation of transparent armored bulletproof glass, high-speed train front glass, optical lenses, and high-grade spandexbecause of the long process of ADI manufacturing industry chain, high technical development difficulties, industrialization more than 70 years, the world can produce HDI only Covestro and BASF, France's Kangrui, Japan Nanyang into 4 companies, can produce IPDI and H12MDI only Evonik and Covestro 2 companiesstarted from basic synthetic research
China has approved the introduction of technology to build ADI devices several times, all due to foreign technology blockade stranded"We also planned to buy a device from abroad to digest and absorb it, but we were bought and dismantled by multinationalcompanies and banned the sale of ADI raw materials to WanhuaWanhua Chemical Executive Vice Presidentsaidgiven ADI's important role in national defense and the development of the national economy, Wanhua began 17 years of relentless effortsADI manufactures three industrial chains, including HDI and Adder, IP-IPN-IPDA-IPDI, MDA-H12MDA-H12MDI"Unlike the digestion and absorption re-innovation spree we have taken in MDI technology development before, we have no technical information to reference and learn from when we selected the ROUTE of ADI gas-phase photogasification technology around 2000, so this technology is Wanhua from the laboratory basic synthesis research, on this basis, the formation of a system concept design, and after engineering experimental verification, and finally developed an industrialization set of technology.", executive vice president of Wanhua Chemical, , said develop four core technologies
According to Wanhua Chemical Executive Vice President , Wanhua developed ADI industry chain manufacturing technology mainly includes photogasification, ammonia hydrogenation, catalytic hydrogenation and reaction distillation four core technologies is the common technology of gas-phase photogasification of isocyanate Wanhua developed the common technology of isocyanate by improving the photogasification reaction Compared with the liquid phase method, the yield of this technology is increased by 3% to 8%, the solvent consumption is reduced by 50%, and the energy saving is more energy-saving, and the optical gas stock is reduced by 30% and the reaction is safer second is the common technology of ammonia hydrogenation Wanhua independently developed a high-selectivity, high conversion rate of composite nano-hydrogenation catalyst, under 150 atmospheric pressure, IPDA yield reached 95.5%, aminotrix content is less than 0.4%, catalyst can be continuously stable operation for more than 2 years; third is the highly active catalytic hydrogenation technology of the benzene ring The technology hydrogenation pressure is low, can reduce the cost of equipment investment, the use of newly developed load nano-palladium catalyst to reduce the consumption of tons of product catalyst 1200 yuan, hydrogenation selectivity, better application performance Using the catalytic system and the kettle hydrogenation process, Wanhua has developed the industrialization technology of HTDA, H6XDA, cyclohemine and other products fourth is the reaction distillation coupling technology Wanhua through the development of segmented shrinking reaction distillation process, the realization of the reaction and distillation of high-efficiency coupling, so that acetone one-way conversion rate of 10% to 15%, isofone selectivity up to 90%, while the reaction heat for product distillation, energy saving significantly build ADI specialty industry group
relying on these innovations, Wanhua has built 50,000 tons / year HDI, 15,000 tons / year IPDI, 10,000 tons / year H12MDI, 25,000 tons / year IPDA, 10,000 tons / year H12MDA and other industrialization devices, built the world's most complete variety, the most complete industrial chain, the most technologically leading ADI industry group in the world As of November 2019, the cumulative sales revenue of 12 billion yuan, profits and taxes 5.2 billion yuan the successful implementation of the Wanhua ADI project, breaking the foreign companies to ADI products industry chain manufacturing technology for 70 years of monopoly, so that Wanhua becomethe world's only master of the entire industrial chain MDA-H12MDA-H12MDI, the world's second master of the entire industry chain IP-IPN-IPDA-IPDI, the only domestic master of HDI and derivatives and other core technologies, to achieve the key industry-