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The No. 1 air separation unit of Hua Lu Technology’s Shenhua Yulin SYCTC-1 project produced qualified oxygen and nitrogen. Author/Source: Hua Lu; Date: October 14, 2020; Clicks: 7. At 16:30 on October 12, the No. 1 air separation unit of the Shenhua Yulin Circular Economy Coal Comprehensive Utilization Project (Phase I), which was constructed under EPC contract by Hua Lu Technology, successfully produced qualified oxygen and nitrogen products, with the unit operating smoothly. To ensure the successful achievement of the commissioning goals for the air separation unit, the project department established a Party member responsibility team for the \"commissioning of the air separation unit\", led by the project manager, and actively organized and coordinated the efforts of the owner’s project team, suppliers, patent holders, construction contractors, as well as the production and operation staff from Yulin Company. With the full cooperation of the design and procurement teams, as well as the relentless efforts of the project management staff and the participating units, the preliminary tasks such as completing the final steps of the \"three inspections and four determinations\", starting up the turbine, conducting joint tests of the unit, performing cold cooling in the cold box, and filling it with perlite were successfully carried out. During the holiday period, the project team members stayed at their posts, working overtime to carry out all the inspections and preparatory tasks prior to starting up the equipment. On the afternoon of the 10th, the “one driving two” compressor unit of Unit 1 air separation plant was started up. On October 11, the medium-pressure expander and the energy-saving expander were started to cool the cryogenic tank; once the temperature reached -180°C, liquid began to accumulate in the main condensation evaporator of the air separation unit. At 16:30 on October 12, the cryogenic tank successfully produced qualified oxygen and nitrogen products. All systems of the unit are operating stably, and the various parameters of the oxygen and nitrogen products meet the design requirements; the commissioning of Unit 1 air separation plant was successful. At the same time, the turbine startup of Unit 2 air separation plant and the natural cooling process for the cold box of Unit 3 air separation plant were successfully completed. Efforts are also being made to prepare for the trial operation of the \"one drives two\" unit in Unit 2 air separation plant, while the filling of the pearlite sand in Unit 3 air separation plant has begun. The air separation unit of the SYCTC-1 project employs the low-temperature air separation technology that is most widely used in industry, including an air compression system, a pre-cooling system, a molecular sieve purification system, and a distillation column system. There are 3 air separation units in total, each with an oxygen production capacity of 100,000 Nm3/h; the overall oxygen production capacity is therefore 300,000 Nm3/h. These units are primarily responsible for supplying high and low pressure oxygen, nitrogen, instrument air, and plant air to downstream units such as gasification plants and ethylene glycol production facilities. The first air separation unit was the first process unit in the SYCTC-1 project to be put into formal operation, laying a solid foundation for the project to achieve its overall goals across the entire process as well as for the stable production of future units.