On March 12, Huang Jiahui, a researcher in the gold catalyst design and selective oxidation research group of the Fossil Energy and Applied Catalysis Research Department of Dalian Institute of Chemical Physics, Chinese Academy of Sciences, and Liu Yingchun, a senior engineer in the engineering research group of the low-carbon catalysis and engineering research center, jointly developed with Binhua Group Co., Ltd., the "new process of liquid-solid circulating fluidized bed hydrogen peroxide direct oxidation of chloropropene to produce epichlorohydrin (FHPECH)" passed the scientific and technological achievements evaluation organized by the China Petroleum and Chemical Industry Federation (hereinafter referred to as the "Petrochemical Federation").
The evaluation committee is composed of 7 experts. Li Yadong, academician of the CAS Member, serves as the director of the evaluation committee, and Han Buxing and Xu Chunming, academicians of the CAS Member, serve as the deputy directors. At the meeting, Dr. Su Xin from Dalian Institute of Chemical Physics presented a work report, research report, novelty search report, and industrial test equipment assessment report on the FHPECH new process, introducing the development process of catalysts and liquid-solid circulating fluidized bed reactors, as well as the construction and operation of a thousand ton industrial test equipment. The expert group reviewed the assessment report, novelty search report, and related evaluation materials, and communicated and discussed with the R&D team. The evaluation committee unanimously believes that the technology of the achievement is advanced, innovative, has good application prospects, and has reached the international leading level. It also agrees to accelerate the promotion of the achievement technology through evaluation and suggestions.
The FHPECH thousand ton industrial test facility started construction in 2022, was completed and put into operation in 2023, and passed the continuous 72 hour assessment and calibration organized by the Petrochemical Federation from January 21 to 24, 2024. The device has achieved full load operation, with a hydrogen peroxide conversion rate of 99.7%, a selectivity of 96.6% for epichlorohydrin, and an effective utilization rate of 99.8% for hydrogen peroxide.
The FHTECH new process adopts a self-developed high-performance titanium silicon molecular sieve catalyst and a liquid-solid circulating fluidized bed reaction regeneration system, which can achieve continuous cycle regeneration of the catalyst, strengthen the heat and mass transfer process of chloropropene epoxidation reaction, reduce the generation of by-products, improve the production efficiency and safety of epichlorohydrin, and have the characteristics of green low-carbon, high safety, and good economy. This technology has been granted multiple patents and has a comprehensive layout of independent intellectual property rights. This technology is expected to promote the green and low-carbon development of China's epichlorohydrin industry.
Representatives from Dalian Institute of Chemical Physics, scientific research and functional departments, as well as Shaanxi Yuneng Group Co., Ltd. and Shaanxi Lean Chemical Co., Ltd. attended the evaluation meeting.
