Thread Content
The Gasification and Purification Center of Yan’an Energy Chemicals, under Yanchang Petroleum, successfully carried out the online replacement of the burner in Gasifier C for the first time. Author/Source: Yanchang Petroleum Yan’an Energy Chemicals News. Date: March 16, 2023. Clicks: 26. On March 13, the gasification and purification center completed this operation for the first time, thereby improving production continuity and reducing the safety risks associated with frequent furnace heating; it also provided valuable experience for the long-term operation of the gasifiers. The burner used in Gasifier C is a new type of experimental jacketed burner, which operated continuously, safely and stably for 105 days. Under the coordination of the Production Planning Department, the center carried out various tasks in an orderly manner, including shutting down the system, replacing the burners, starting up the system with new materials, and increasing pressure and introducing gas. It took 4 hours and 30 minutes to successfully complete the task of replacing the burners and resuming operation. Long-term operation of the gasifier is one of the key challenges for the coal gasification and purification center. Taking the “3-for-3 Improvement” initiative as a starting point, the center actively carried out exchanges and learning with peers in the same industry. On this basis, and by taking into account the characteristics of the equipment, it successfully developed a standard operating procedure for replacing process burners while keeping operations ongoing. This procedure was continuously optimized throughout various start-up and shutdown processes, and training was enhanced to improve employees’ operational skills, thereby laying a solid foundation for the successful completion of these continuous operation tasks. The coal gasification and purification center gives top priority to the long-term stable operation of the equipment, earnestly carrying out the approach of \"handling tasks on a daily basis and making progress on a weekly basis.\" It focuses on precise operation of the processes and standardized management of the equipment; on one hand, it adjusts operating conditions in a timely manner in response to changes in coal quality, carefully controlling key process parameters such as the composition of the shifted gas and the oxygen-to-coal ratio, and adjusting in real time the amounts of additives, dispersants, and flocculants used in the water-coal slurry ； On the other hand, it is necessary to promptly maintain and replace the wear-prone parts of equipment such as slag scoopers, slag breakers, and filters, in order to keep the equipment in good working condition and ensure the continuous and stable operation of the gasification system.