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Recently, the world's first coke oven gas to liquefy natural gas project - "New Mine Inner Mongolia Energy Co., Ltd. Inner Mongolia Hengkun Chemical Co., Ltd. 120 million m3 / year coke oven gas LNG project" trial production of the entire process successfully, marking the world coke New breakthroughs in liquefied natural gas technology from furnace gas. The project adopts a mixed refrigerant process for the cryogenic liquefaction of coke oven gas to produce LNG. The Institute of Physics and Chemistry, Chinese Academy of Sciences, is responsible for the design and technical service of the mixed refrigerant refrigeration process package.
Inner Mongolia Hengkun Chemical Co., Ltd. is affiliated to Xinkuang Inner Mongolia Energy Co., Ltd. The company plans to build 5 million tons/year tamping coke project, 600,000 tons/year coal tar deep-processing project and 300,000 tons/year coke oven. Gas LNG projects. The first phase of the coking park project is currently in operation, with an annual output of 1.3 million tons of rammed coke and 120 million cubic meters of liquefied natural gas.
The project is provided by the physics and chemistry institute for the design and technical service of the mixed refrigerant refrigeration process package. According to the process design of the process package, coke oven gas from coking plant raw materials, after compression, pretreatment, and fine desulfurization, it enters the methanation process, carbon monoxide, carbon dioxide and hydrogen After the methanation reaction produces methane, the reaction heat is removed and recycled through the by-product intermediate pressure steam. After the final methanation, the methane-rich mixed gas enters the cryogenic liquefaction separation process after dewatering and decarbonization to produce the product LNG and Rich in hydrogen. After the implementation of this project, natural gas in coke oven gas can be extracted and the production of liquefied natural gas can be increased by about 30%. Each year, 3.2 billion standard cubic meters of exhaust emissions can be reduced, and 100,000 tons of standard coal can be saved, which is significant in terms of energy saving and emission reduction and recycling economy. The economic and social benefits have made positive contributions to building a "resource-saving and environment-friendly" society.
The research group of key technologies for low-temperature systems at the Institute of Physics, Chemistry and Chemistry is part of the Key Laboratory of Cryogenic Engineering of the Chinese Academy of Sciences. It has been devoted to the research and development of comprehensive utilization of various exhaust gas resources (oxygen-bearing coalbed gas, coke oven gas and synthetic ammonia bleed air, etc.) for many years. The work combines the key technologies of the cryogenic system with the chemical process to create new ways to turn waste into treasure and develop green energy. It has developed the unpowered ammonia recovery process, the comprehensive utilization of coke oven gas, and the liquefaction separation of oxygenated coalbed methane. The liquefied natural gas process has been widely used in industrialized experimental devices and industrialized production devices, and the process of systematic, engineering and industrialization has been continuously strengthened. At present, the research group is undertaking the design of the LNG project for the comprehensive utilization of coke oven gas, which is the largest at home and abroad.
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