Thread Content
Progress on the Construction of the Pyrolysis Phase of the Shaanxi Coal Yulin Chemical’s 15 million tons/year Demonstration Project for Clean and Efficient Conversion of Coal by Different Grades. Author/Source: Refining and Coal Chemicals Industry. Date: 2020-08-16. Clicks: 41. The first-phase underground pipeline network construction for this project was completed on July 13, following 3 months of intensive and orderly work; with the assistance and guidance of supervisors and construction parties, the underground pipelines were connected and put into use. The Phase 1 underground pipeline project for the pyrolysis startup project was under general contract construction by Sinochem Second Construction Group Co., Ltd., and work officially commenced on April 15. During the project implementation, to ensure progress, the project team, the client, the supervision unit, and the construction contractor held multiple special meetings to address various issues arising from the first-level pipeline installation work, and to arrange personnel, equipment, and the sequence of construction activities in an appropriate manner. The first-phase underground pipeline network project for this facility is the first underground pipeline network to be successfully completed and put into use within the Yulin Chemical Plant area. The main scope of work includes: a total pipeline length of 11,925 meters, a total internal diameter of 21,751 DB, 184 manholes, and approximately 200,000 cubic meters of earthwork removal. The successful operation of this first-phase underground fire protection pipeline network provides a solid guarantee for the water supply needed for subsequent construction activities in various units within the plant. The \"Demonstration Project on the Utilization of Coal at Different Grades to Produce New Chemical Materials\" carried out by Yulin Chemical of Shaanxi Coal Group is currently the largest coal chemical project under construction in the world. The project covers an area of approximately 13 square kilometers, with an estimated total investment of 125 billion yuan. As a coal conversion demonstration project with the highest coal processing capacity, the greatest degree of industrial integration, the most complex technology integration, and a supply chain that is closest to the end market, this project represents, to a certain extent, the highest level of development in the coal chemical industry. It will have a profound impact on the further development and direction of China’s coal chemical industry, as well as determine the extent to which China’s coal chemical industry supply chain can be expanded in the future. The project will be constructed in two phases and four stages, comprising a total of 27 process units along with associated utility systems. These mainly include the medium- and low-temperature pyrolysis of 15 million tons of coal, the production of 5.6 million tons of methanol, 1.8 million tons of ethylene glycol, 2 million tons of MTO, as well as downstream products derived from these intermediates. The investment for the first phase of this project is approximately 70 billion yuan, which will be used to build facilities capable of producing 1.8 million tons per year of ethylene glycol and 2 million tons per year of olefins, as well as a large number of fine chemical products derived from olefins. The facility for producing 1.8 million tons per year of ethylene glycol is part of the first stage of this project, and it represents the largest coal-based ethylene glycol production facility under construction worldwide. The estimated investment for this facility is 26.5 billion yuan. The project utilizes Collin’s patented dry powder gasification technology and Japan’s patented technology for producing ethylene glycol from syngas. Shaanxi Coal Group Yulin Chemical Co., Ltd. and Nippon Kako Kagaku Co., Ltd. jointly invested in establishing Shanxi Coal Group Yulin Chemical Yugao Chemical Co., Ltd. to build and operate facilities for the production of oxalate esters as well as for the hydrogenation of oxalate esters to produce ethylene glycol.