Record of the emergency repair work on the denitration equipment of Boiler No. 2 at the Yulin Coal Chemical Public Works Center of Shaanxi Yanchang Petroleum

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Record of the Emergency Repair Work on the Denitrification Equipment of Boiler No. 2 at the Public Engineering Center of Yulin Coal Chemical Industry, Shaanxi Yanchang Petroleum Company / Author/Source: Shaanxi Yanchang Petroleum Yulin Coal Chemical Co., Ltd. Date: 2022-07-02 Views: 12 Recently, the on-site operators at the Public Engineering Center of Yulin Coal Chemical Industry, Shaanxi Yanchang Petroleum Company, noticed an abnormal pressure in the air supply for denitrification at Boiler No. 2; this pressure increased from 2.7 KPa to 3.1 KPa. After conducting on-site inspections and discussions, it was initially determined that there was a blockage in the denitrification pyrolysis furnace, which was affecting the normal operation of the facility. In response to this issue, the center immediately established a maintenance team and developed a detailed maintenance plan. At 11 p.m., all maintenance personnel arrived and made preparations in advance. At 11:30, the denitration equipment was shut down to begin cooling; by 0:30, the temperature had dropped to around 60 degrees Celsius. The maintenance team worked in shifts, overcoming challenges such as limited time for cleaning and high temperatures in the working environment. They completed tasks such as cleaning and installing filters within just two hours. After a trial run, the nitrogen oxide levels in Boiler No. 2 returned to normal, and the system operated stably. In the future, the center will closely monitor the equipment’s operational data, promptly address any unexpected issues, and ensure the steady operation of the devices over extended periods of time.