Jinling Petrochemical sets a new record for the operation of key water-coal slurry equipment

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On May 4, Gasification Unit B in Chemical Operations Department 1 was shut down as scheduled. The process burner of this unit operated continuously for 126 days, setting a new record for the operating duration of burners since the start-up of the coal water slurry plant; this figure also represents a leading level among similar plants in China. The water-coal slurry gasification unit in the First Chemical Engineering Department utilizes GE’s patented gasification technology. Its process burners are used in a high-temperature furnace at approximately 4.0 MPa (G) and 1300°C, and they have to withstand flame scouring, high-temperature thermal radiation, as well as the erosive effects of fast-moving materials; thus, the operating conditions are quite severe. At present, the average service life of burners in similar units in China is around 80 days. As a key device that determines the long-term operation of coal gasification units, the safe and stable long-term operation of process burners also reflects the overall level of management of the process equipment in such units. At the beginning of 2016, the Operations Department identified extending the service life of burners as a key approach to ensuring the long-term operation of the equipment and reducing maintenance costs. It established a specialized technical team that, with the guidance of the company’s Maintenance Department, adopted new burner heads and implemented comprehensive control over the entire process by focusing on monitoring usage, analyzing operational issues, and ensuring quality control in burner repairs. The Operations Department has established maintenance management files for each burner, detailing information such as the serial number, design parameters, material used, date of commissioning, and maintenance records. During the operation of the process burner, regular \"health\" checks are carried out by adjusting the burner’s operating parameters, analyzing the shape of the slag and the amount of residual carbon. The task force promptly follows up with analyses and evaluations to devise appropriate countermeasures ； After the burner was taken out of service, special meetings were held to summarize and analyze issues such as burner wear and refractory brick erosion, in order to continuously accumulate experience in its use. Through more than a year of unremitting efforts, the service life of the burners in the gasification furnace process has been continuously extended, while the stable operation rate of the facility and its overall economic efficiency have seen significant improvements. From January to April, Chemical Operations Department 1 achieved a profit of 40.58 million yuan.