Progress in the construction of the olefin production project via comprehensive utilization of exhaust gases from Qinghai Damei Coal Industry

Thread Content

Progress in the Construction of the Project for Utilizing Waste Gases from Qinghai Damei Coal Industry to Produce Olefins Author/Source: Huahua Network – Coal Chemicals Date: 11-15-2018 Clicks: 55 At 12 p.m. on November 13, after three hours of continuous work, the pouring of the final batch of concrete was completed at the 9.1-meter level of the roof of the cooling tower’s water tank in the circulating water facility of the public works section of the Qinghai Damei Coal Industry project. Thus, the last structural element of this circulating water facility was completed, marking the full and successful completion of the construction of its structural elements. The main structure of the utility circulating water plant consists of cooling towers, water intake tanks, pump rooms, chemical dosing rooms, etc. The cooling tower framework has four levels in total, and the water tank beneath each cooling tower is equipped with 2 cooling tower fans; the designed capacity is 50,000 cubic meters per hour. Before starting work, the project department organizes the assisting units and on-site construction workers to familiarize themselves with the drawings, participate in drawing reviews, study relevant regulations, standards, and specifications, prepare construction organization plans for various tasks, organize technical briefings, and develop plans for tracking the supply of key materials. During the construction process, the project team and the supporting units faced tight deadlines, heavy workload, difficulties and high risks associated with work at heights. They also had to overcome various adverse factors such as a poor construction environment, the negative effects of the high-altitude climate, and limited available time for construction. The project team formulated scientific plans and arranged the construction tasks in a logical manner. Adhere to quality and safety as the core, establish and improve a quality and safety management system, actively promote knowledge related to quality and safety, and enhance the awareness of quality and safety among construction workers ； Provide detailed safety and technical instructions to the workers carrying out the work, and assign dedicated personnel to supervise and guide them on site to ensure safe construction throughout the entire process ； Optimally allocate personnel and machinery to improve construction efficiency and ensure project progress. The completion of the main structure construction of the circulating water system for the Qinghai Damei project has laid a solid foundation for subsequent work. At present, the project is about to enter the phases of wall construction, secondary structure work, waterproofing and insulation, as well as decoration. On the morning of November 3, the plant’s air compressor station for the comprehensive utilization of exhaust gases from Qinghai Damei Coal Industry in the production of olefins was successfully handed over, with Baosteel Engineering Company acting as the general contractor for its construction. On November 2, the polyethylene unit of the Qinghai Damei Coal Industry project underwent acceptance testing for its main structure; the powder resin processing unit, the granular resin mixing unit, and all associated facilities passed the inspection successfully in one go. The olefin production project via the comprehensive utilization of exhaust gases from Qinghai Damei Coal Industry utilizes some of the regional methanol resources derived from projects that produce methanol from exhaust gases generated in the area’s smelting operations; the project does not directly use the exhaust gases from these smelting operations to produce methanol. The methanol used as raw material for this project comes from Qinghai Guilu Chemical Co., Ltd. (1 million tons per year), Western Petrochemical Co., Ltd. (600,000 tons per year), and the Golmud Refinery of CNPC’s Qinghai Oilfield (300,000 tons per year); agreements for the supply of methanol have been signed with all of these parties. The construction of the Qinghai Damei Coal Industry’s project for the comprehensive utilization of exhaust gases to produce olefins involves an investment of 12.7 billion yuan. The project is located in the West Area of the Ganhe Industrial Park, within the Xining Economic and Technological Development Zone in Qinghai Province. Construction began on March 23rd, with a capacity of 1.8 million tons per year for methanol-to-olefins production, 300,000 tons per year for polyethylene production, and 400,000 tons per year for polypropylene production. Additionally, the project includes necessary utility systems, auxiliary facilities, and external infrastructure. The project uses MTO-grade methanol as raw material, and through production units such as methanol to olefins, olefin conversion, MTBE/1-butene, polyethylene, and polypropylene, it produces polyethylene and polypropylene products, with MTBE and C4/C6 as by-products. The MTO combined unit in this project utilizes the DMTO technology developed by the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, and was EPC-general contracted by Sinopec Luoyang Engineering Co., Ltd.