On June 18, the first air separation unit and backup system of the 1.8 million tons/year ethylene glycol project of Shaanxi Coal Group Yulin Chemical Co., Ltd. were successfully handed over. At around 20:15 that night, the first air separation unit The steam turbine successfully rotated once and completed the overspeed test.
The air separation unit of Shaanxi Coal Yulin Chemical Project adopts Linde technology, with a scale of 3 sets of 100,000 Nm³/h air separation, and the backup is divided into liquid nitrogen system (5000m3) and liquid oxygen System (3000m3). From the signing of the EPC project contract in April 2020 to the successful completion of the delivery, it only took 14 months, once again setting a new speed for the company’s construction of air separation units.
Project Overview
The construction scale of Shaanxi Coal Group Yulin Chemical 1.8 million tons of ethylene glycol project is 1.8 million tons/year of ethylene glycol, and it will not be constructed in batches. The entire device series is divided into three series, including ethylene glycol synthesis, The single series scale of ethylene glycol distillation is 600,000 tons/year. The system is highly integrated and the scale benefits are obvious.
Shaanxi Coal Group Yulin Chemical Company Coal Quality Utilization to Make New Chemical Materials Demonstration Project is currently the largest coal chemical project under construction in the world. The total project area is about 13 square kilometers. The planned total investment is about 126.2 billion yuan, and the annual coal conversion is about 24 million tons. It includes a total of 27 process devices and supporting public works, mainly including 15 million tons of medium and low-temperature pyrolysis of coal, 5.6 million tons of methanol, and 1.8 million tons of ethylene glycol. , 2 million tons of olefins and downstream products using them as intermediate raw materials.
Among them, the first phase of the project has a 1.8 million tons/year ethylene glycol project, covering an area of approximately 4.4 million square meters, and the total project investment budget is approximately 26.5 billion yuan, it is also the largest coal-to-ethylene glycol device currently under construction in the world, and is scheduled to be mechanically completed in June 2021;
The first and second phases are to build 5.6 million tons/ The annual methanol, 2 million tons/year olefins and deep processing projects are planned to be completed before the end of 2023.
The second phase of the project is led by coal pyrolysis and is also divided into two phases. One phase is 1.2 million tons/year pulverized coal pyrolysis and 500,000 tons/year coal. The tar deep processing industrialization demonstration device is scheduled to be mechanically completed in June 2021;
The second phase will expand the pyrolysis scale to 15 million tons and extend the coal tar industry chain to produce aromatic hydrocarbons As well as downstream products combining aromatic olefins, construction is planned to start in 2022 and all construction content will be completed by the end of 2025. </p
