【Ten Years of Great Progress in Chemical Technology】From 198 to 2023, China’s first PDH plant using independent ADHO process technology was put into operation
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Ten years of rapid development in chemical technology – praise for China’s prosperity and strength. This is just a starting point; more participation from everyone will make things even more lively. Haichuan becomes even better with your involvement; we welcome everyone to take an active part in the forum discussions. The fragrance of rice flowers in August ------------------------------------------- Puyang Yuandong Technology Co., Ltd.’s 150,000 tons per year PDH (propane dehydrogenation) plant was successfully put into operation on June 19, 2022, marking the successful commissioning of China’s first PDH plant using domestic technology. The total investment in this PDH plant was 1.1 billion yuan, and it is located in the Puzhou Chemical Industry Park, Fan County, Puyang City, Henan Province. Public information shows that Henan Puyang Yuandong Technology Co., Ltd. has a registered capital of 720 million yuan and covers an area of 518 mu; its business scope mainly includes the production and sales of propane, propylene, C4, and hydrogen. It is reported that this PDH unit utilizes the ADHO process developed by the Key Laboratory of Heavy Oil at China University of Petroleum (Huadong). The catalyst used is a non-precious metal oxide that is non-toxic and non-corrosive, representing a green and environmentally friendly catalyst with independent intellectual property rights. This set of equipment was accompanied by the development of a high-efficiency circulating fluidized bed reactor, which enabled the continuous carrying out of dehydrogenation reactions and catalyst coking regeneration, thus filling a gap in China. This technical advantage features the following benefits and characteristics: First, it will enable the localization of China’s first complete set of propane dehydrogenation technology, breaking the monopoly of foreign technologies in this field ； Secondly, both the investment cost and operating costs of the equipment are lower than those of foreign technologies, resulting in significant economic benefits ； Thirdly, the use of green and environmentally friendly alkane dehydrogenation catalysts has led to significant improvements in terms of safety and environmental benefits. It is worth noting that this project can complement the surrounding downstream industries. Projects near the site that use propylene as a raw material include polypropylene plants and acrylonitrile plants within a 5-kilometer radius ； The 400,000-ton propylene oxide plant planned for the industrial park ； Acrylic acid and other materials needed for the green coating industrial park. Hydrogen can be widely used in the petrochemical and fine chemical industries. This PDH facility can supply raw materials to Badfu Company, a global leader in the acrylic emulsion industry. The Badfu (Puyang) New Materials Industrial Park, located in Puyang County, officially began construction on January 4th. Once the PDH project is completed, it will enable the establishment of the propylene-acrylic acid/ester-acrylic emulsion-green coatings industrial chain in Puyang City. In addition, Puyang Yuandong Technology Co., Ltd. in Henan Province plans to invest 4 billion yuan to build a second PDH plant with an annual production capacity of 750,000 tons. Once this second plant is fully operational, the company’s total PDH production capacity will reach 900,000 tons per year, placing it among the leaders in its industry.
Almost all of the catalysts used in the propane dehydrogenation projects that are currently in operation in China are monopolized by foreign companies. New, highly efficient domestic propane dehydrogenation catalysts for propylene production are of great significance for breaking foreign technological monopolies and achieving localization. It is understood that the 1,000-ton/year PDH pilot project at Sinopec Beihai Refining & Chemicals, which is under construction, also employs Sinopec’s independently developed SPRIT propane dehydrogenation technology. Table 1 compares domestic ADHO technology with similar foreign technologies.
【Ten Years of Rapid Development in Chemical Engineering Equipment】Hydrogen liquefaction systems using domestically produced continuous primary-secondary hydrogen conversion heat exchangers from 1086 to 2023 https://bbs.hcbbs.com/thread-4529618-1-1.html (Source: Haichuan Chemical Engineering Forum)
【Ten Years of Great Progress in Chemical Engineering Technology】199–2023: China’s first new synthetic lubricant with an ultra-high viscosity index – mPAO150 https://bbs.hcbbs.com/thread-4531439-1-1.html (Source: Haichuan Chemical Industry Forum Website)
Grow and strengthen, achieve new glory:lol:lol
In 2022, China’s hydrogen production amounted to 37.81 million tons, representing a year-on-year increase of 14.58%. Among them, the hydrogen produced as a by-product of the PDH industry amounted to 562,100 tons, accounting for 1.5% of China’s total hydrogen production. Although it accounts for a small proportion, the hydrogen produced as a by-product of PDH is one of the lowest-cost methods. It should be specifically noted that most PDH units in China use UOP’s Oleflex production process and Lummus’ Catofin process; only one unit employs the fluidized-bed alkane dehydrogenation ADHO process technology developed by China University of Petroleum. According to Rockchip’s latest statistics, among the processes used in PDH units in China, 66% choose the UOP process, 31% opt for the Lummus process, and 3% use domestic processes. Due to differences in the process, the hydrogen yield generated as a by-product varies among different PDH units. According to statistics, the hydrogen yield of UOP’s Oleflex process is around 6%, while that of Lummus’ Catofin process is about 3%; the hydrogen yield of the domestically developed ADHO process is approximately 4%. Based on different process types and the actual operation rates of enterprises in 2022, it was found that the yield of hydrogen produced as a by-product in the PDH industry increased significantly by 29% on a year-on-year basis in 2022. Pingtouge believes that this is mainly driven by the growth in the industrial scale of PDH; in 2022, China added more than 3 million tons of PDH production capacity. According to the survey, among the PDH units in China, hydrogen produced as a by-product is used for fuel combustion in about 3 units, with no supporting infrastructure for the utilization of hydrogen at subsequent stages. There are 10 units in which hydrogen is used for the refining of petroleum products. Hydrogen produced as a by-product from 16 sets of units is used downstream in the production of chemical products such as aniline, hydrogen peroxide, and carbon black. In addition, there are several sets of PDH units, and projects for the comprehensive utilization of hydrogen energy, such as hydrogen refueling stations and hydrogen transportation pipelines, are currently being developed; these are also considered part of chemical production.