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**The first air separation unit of the Energy Yulin Chemical Project came online / Author/Source: Shaanxi Petrochemical News / Date: 10-14-2020 / Clicks: 6. At 16:30 on October 12, the first trial operation of the first air separation unit of the Energy Group Yulin Chemical Project was successful, with qualified oxygen and nitrogen products being produced; this was 18 days ahead of the scheduled timeline, marking another significant advancement in the project’s trial operations. The project is equipped with 3 air separation units, each with an oxygen production capacity of 100,000 standard cubic meters per hour, and is primarily responsible for supplying high-pressure and low-pressure oxygen, nitrogen, instrument air, and plant air to production units such as those for gasification and ethylene glycol production. The unit employs the widely used in industrial applications cryogenic air separation technology, which includes an air compression system, a pre-cooling system, a molecular sieve purification system, and a distillation tower system. The unit that successfully completed the test run this time is Unit 1 of the air separation plant. To ensure the successful production of qualified products during the first commissioning attempt, **Yulin Energy Chemical Company actively implemented the \"100-Day Campaign\" plan for commissioning, strictly following the scheduled timeline for various tasks. It successfully completed the preliminary steps such as the \"three inspections and four determinations,\" the startup of the turbine, the joint testing of the unit, cooling of the cold box, and the filling with perlite. At present, the unit is operating smoothly, and all parameters of the oxygen and nitrogen products meet the design requirements.