Nowadays,a large number of chemical products are manufactured by oxidation reaction in chemical industry,such as the important organic chemical materials of propylene oxide (PO),epichlorohydrin (ECH) and hydroxylamine hydrochloride.The current manufacturing technology exists serious problems of high pollution,high energy consumption and high emissions,hence it is necessary to comprehensively upgrade technology considering environment,economy and safety issues.The independently- and domestically-developed H2O2oxidation technology is a catalytic oxidation process with H2O2as an oxidant and Ti-Si molecular sieve as catalysts,which has advantages of atomeconomy,environment-friendly and so on.However,since this process is a strong exothermic multiphase reaction,it is urgent to solve the problems of highly-efficient mixture,rapid heat exchange and safety in the design and engineering scale-up of reactors.Another common problem is the highly efficient separation of the oxidation by-products.In order to overcome these above problems,a research was carried out integratedly by whole-chain design from basic research to industrial application,and three common scientific problems of molecular mixing and interfacial transmission mechanism of H2O2oxidation system,cross-scale transfer and reaction coupling mechanism,and reactor scale-up law and new approach for process enhancement were mainly studied.Upon the project completion,manysets of independently-developed industrialization technologies will be formed,and two industrial demonstration units of H2O2green oxidation system,including a PO industrial demonstration unit and a hydroxylamine hydrochloride industrial demonstration unit,as well as a complete set of new technical packages for ECH,will be constructed.The project offers an opportunity to break the blockade and monopoly of foreign technologies and to subvert and eliminate the existing and highly-polluted technology for energy-saving,environmentally-benign and green manufacturing.
