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Zhong’an Coal Chemical’s gasification furnace has operated continuously for over 365 days Author/Source: Zhong’an Coal Chemical Date: 2022-03-19 Clicks: 13 As of March 18, the fourth series of gasification furnaces in this facility had been operating continuously for more than 365 days, while continuing to function stably. This achievement once again set a new record for continuous operation of coal gasification furnaces in China’s petrochemical industry, raising the operational duration to a new level. Strengthen management and operate with care to ensure the safe and stable operation of the facility. Since the four series of gasifiers in the gasification unit began operating over a long period, they have faced numerous challenges. To address prominent issues such as slag blockage in the quench chamber of the gasifiers, severe ash accumulation in the raw syngas system, and a high failure rate of slag removers, the unit has taken targeted measures including process optimization and preventive maintenance. It has also formulated and implemented a special protection operation plan to enhance the emergency response capabilities of its personnel. In February this year, due to the load demands from downstream processes, the gasification unit operated at reduced capacity. The team members studied carefully the operation procedures for the gasification furnace during the \"two furnaces and two machines\" operation mode, intensified on-site inspections, and resolved the blockage issue of valve LV0007 in the ash water system on multiple occasions. The operators closely monitored the system, addressing issues such as high oil pressure in the slag removal machine and abnormal current levels in the slag scooper on multiple occasions. It is precisely this high level of responsibility and proactive attitude at all levels that has ensured the safe and stable operation of the Series 4 gasifiers. Overcoming challenges through technological innovation to help the gasification furnace set new operational records: During the Spring Festival, the clarifier tank in the ash water system of the gasification unit experienced problems such as malfunctioning agitators and excessive accumulation of sludge inside, which severely restricted the furnace’s ability to operate for extended periods of time. The gasification unit management team and the professional technical staff developed a special plan for cleaning up as a result of overtime work, and promptly mobilized resources to put it into action. After isolating the clarification tank, the facility organized Party member task forces and youth task forces; specialized experts were assigned to carry out continuous flushing and agitation operations inside the clarification tank throughout the day, working overtime to clear the pipelines. In total, 23 attempts were made to clear blockages in the inlet and outlet pipelines of the slurry pump, and the vacuum belt filter was switched and adjusted 16 times – ultimately allowing them to win this \"battle for defense\". While being willing to take on challenging tasks, the gasification unit always focuses on ensuring its safe, stable, and high-capacity operation. By leveraging projects aimed at addressing technical challenges faced by young workers, it conducts technical discussions on issues such as burnout of downcomers and ash accumulation in the syngas system, and implements various technical improvements to ensure that the gasification furnace can operate efficiently and smoothly, continuously setting new records for performance.