Successful commissioning of the largest air separation unit at Yongmei

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On December 4, reporters learned from Yongmei Group that for the key project of Yongmei Group’s Longyu Coal Chemical Complex, which is a major construction project in our province, the air separation equipment with the largest domestic design capacity and the most advanced technology in China has now completed its initial trial run successfully and has entered the stage of producing oxygen and nitrogen on a regular basis. 　　This move not only signifies the complete completion of all utility services such as power and gas supply for Longyu Coal Chemical, marking the entry into the chemical commissioning phase and taking another significant step forward in the production of methanol and the expansion of the coal industry chain, but it also makes our country the fourth country, after the United States, Germany, and France, to be able to produce such equipment. 　　Air separation equipment is a device with a high level of technical complexity in China; it falls under the category of major equipment manufacturing projects. It enables the separation of air into various gases required for industrial production, and is widely used in fields such as chemicals and metallurgy. Previously, China’s large-scale air separation equipment had relied on imports for a long time. 　　It is reported that the air separation equipment for Longyu Coal Chemical Industry was designed by Kaifeng Air Separation Plant, a subsidiary of Yongmei Group, and is capable of producing 53,000 cubic meters of standard oxygen per hour. This unit utilizes the latest technologies in the air separation industry, namely: molecular sieve purification, air recycling, a pressurized turbine expander, a dual-pump internal compression process, structured packing in the column, and hydrogen-free full distillation technology for argon production.