[Ten years of major development in chemical technology] 044-2023 Million tons of slurry bed Fischer-Tropsch synthesis and its high-end wax preparation technology passed the appraisal

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Chemical equipment has developed greatly in the past ten years. Praise for China's prosperity and strength in the prosperous age. It will be more lively and exciting with everyone's participation. Everyone is welcome to participate in more forum exchanges and discussions. Everyone pays attention to safety and knows how to respond to emergencies. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * On June 1, the "Million-ton Slurry Bed Fischer-Tropsch Synthesis Process and Key Technology Development and Industrial Application of High-end Wax Preparation" project developed by Shaanxi Future Energy Chemical Co., Ltd. passed the achievement appraisal organized by the Shaanxi Petroleum and Chemical Industry Federation in Xi'an. The appraisal committee believes that this technology is at the internationally advanced level. As China's first million-ton slurry bed low-temperature Fischer-Tropsch synthesis device, Future Energy's 1 million tons/year coal indirect liquefaction project is located in Yuheng Industrial Zone, Yulin, Shaanxi Province. It was completed in August 2015 and the entire process was opened to produce qualified oil products. It mainly produces diesel, naphtha, liquefied petroleum gas, etc. 　　According to the person in charge of Future Energy Company, the project has been directly scaled up from a 5,000-ton/year pilot plant to a million-ton level. It uses an iron-based catalyst low-temperature slurry bed reaction system. The reactor has a diameter of 9.8 meters and a volume of 3,500 cubic meters. It was the largest in the world at the time of project construction. In response to the problems of short operating cycle, low production load, and high energy consumption in technical engineering, we have been conducting technical research on low-temperature Fischer-Tropsch synthesis equipment since October 2018, and developed high-efficiency liquid-solid separation technology under high-temperature and high-solid conditions, a slurry bed reactor gas distributor, and a Fischer-Tropsch synthesis iron-copper low-temperature catalyst. We are the first in China to achieve high selectivity of high-carbon hydrocarbons at a low temperature of 240°C, achieve uniform distribution of gas and catalyst, reduce the reactor bed temperature difference, and improve reaction efficiency. Through system research and implementation of a series of technical transformation, optimization and industrial applications, a number of technical bottlenecks have been solved, and the low-temperature Fischer-Tropsch synthesis process technology has been optimized. The production capacity of the synthesis unit has been increased by 450,000 tons/year, and the daily output has increased by more than 10%, achieving long-term stable operation and significantly reducing the unit consumption of oil per ton. 　　Experts' 72-hour on-site calibration assessment of the low-temperature Fischer-Tropsch synthesis device showed that the device has achieved long-term continuous and stable operation, and the consumption of various materials has been significantly reduced compared with the 2017 average. Among them, the consumption of syngas per ton of product is 5571Nm3, fresh water consumption is 6.222m3, power consumption is 192.63kWh, and the energy conversion efficiency reaches 42.75%.