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Linde signs three supply contracts for 100,000 Nm3/h air separation units Author/Source: Qipin Network Date: 2019-05-16 Clicks: 16 On May 13, a signing ceremony was held in Xi’an between Linde Group and Yulin Chemical Company of Shaanxi Coal Group regarding the design, supply, and service contracts for three 100,000 Nm3/h air separation units as part of an ethylene glycol production project with an annual capacity of 1.8 million tons. Song Shijie, executive director of Yulin Chemical of Shaanxi Coal Group, Zhang Guangrui, deputy general manager, and heads of relevant business departments; Jan Nopper (Yang Bocheng), president of Linde Engineering’s East Asia region; Cha Wenjie, general manager of Linde Engineering’s Hangzhou office; Chen Chun, general manager of the Dalian office, along with relevant business leaders from that office; Chai Jianyu, president of Kao Chemical Technology Co., Ltd., and other relevant officials attended the signing ceremony. It is understood that the construction scope of the air separation unit supporting the 1.8 million tons per year ethylene glycol production facility in the first phase of Shaanxi Coal Group’s Yulin Chemical project, which focuses on the differentiated utilization of coal to produce new chemical materials, includes: 3 sets of air separation equipment with an oxygen production capacity of 100,000 Nm3/h, a shared 5,000 m3 liquid nitrogen backup system, a 3,000 m3 liquid oxygen backup system, and a vaporization system. It supplies high-pressure and low-pressure oxygen products with a purity of ≥99.60% for the production of subsequent process units such as project gasification, medium-pressure and low-medium-pressure nitrogen products with a purity of ≥99.99%, as well as low-pressure nitrogen products with a purity of ≥99.60%. Meanwhile, it provides medium such as instrument air and plant air for the plant’s utility systems. The design of this facility is guided by the technical principles of advanced processes, high extraction efficiency, low energy consumption, mature technology, reliable operation, ease of handling, and a continuous operating cycle of at least 3 years. It employs advanced process technologies such as a steam turbine with two drives, full-low-pressure molecular sieve purification and adsorption, air pressure enhancement cycles, gas and liquid expansion refrigeration, internal compression of liquid oxygen, and enhanced efficiency in the crude argon column, thereby achieving an optimal balance between energy consumption and investment while ensuring high reliability and economic efficiency. It is reported that through international competitive bidding procedures, Linde Engineering was ultimately selected as the system integrator to undertake the design, supply, and technical services for the air separation unit. The scope of the contract includes: the technical design of the plant process package and the basic engineering design, the detailed engineering design of the cryogenic tank system, the supply of complete process equipment along with related technical services such as installation and commissioning; the initial planned contract duration is 17 months. Song Shijie, executive director of Shaanxi Coal Group Yulin Chemical, said, “In this partnership, Shaanxi Coal Group Yulin Chemical will keep its promises and fulfill its obligations strictly in accordance with the agreement. We hope that Linde Engineering will also meet all the requirements stipulated in the contract. We wish for a successful cooperation between the two parties that leads to mutual benefit.” ”