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The 3×75,000 Nm3/h O₂ air separation units supplied by Linde Engineering to Sinopec Zhong’an United Coal Chemical have all begun producing oxygen successfully. Author/Source: Coal Chemical Industry 114 Forum; Date: July 17, 2019; Views: 37. In July, the 3×75,000 Nm3/h O₂ air separation units were able to produce oxygen successfully, thus fulfilling the interim goals set for the unit’s commissioning process and laying a solid foundation for the full-scale operation of the entire coal chemical plant. Since the delivery of the air separation unit last November, Zhongan United Coal Chemical and Linde Engineering have worked together to carry out tasks such as the startup of the turbine & air compressor, the combined operation of the units, the purging & pressure testing of the unit, the cooling process using cold boxes, and the filling with perlite, until successful commissioning was achieved, with the product purity meeting the requirements specified in the contract. Subsequently, tasks such as performance verification of the three sets of devices will be carried out. The Zhongan United Coal Chemical Integration Project is funded and constructed by Zhongan United Coal Chemical Co., Ltd., a company established jointly by Sinopec Corporation and Anhui Wanbei Coal and Electricity Group Co., Ltd. The total investment for the first phase of this project is 26.7 billion yuan; it involves the construction of facilities for producing 1.7 million tons per year of methanol, as well as 350,000 tons per year of linear low-density polyethylene and 350,000 tons per year of polypropylene. The project also requires 856 million tons of coal resources, with a coal mine capable of producing 4 million tons per year. Once the first phase is operational, it is expected to generate annual sales revenue of around 9 billion yuan and annual tax revenues of around 800 million yuan.