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The main methods for desulfurizing boilers in Weihai include in-furnace desulfurization, dry flue gas desulfurization, and wet flue gas desulfurization. The dry processing equipment required is huge, resulting in high investment costs ； From economic and practical perspectives, wet filler absorption towers, plate-type absorption towers, and swirl plate absorption towers are commonly used. Weihai boiler denitration and desulfurization process: 1. Technical requirements for desulfurization and dust removal equipment during operation. 1) Pay attention to the modification of areas prone to wear, such as the inner wall of the outer cylinder. Dust removal equipment: dust collectors. 2) When the temperature of dust-containing gases is altered or humidity decreases, be cautious of dust accumulation, blockages, and degradation. Dust collector. 3) Pay attention to the pressure difference changes and the color of the exhaust smoke. Wear and degradation can cause perforations in the dust collector, leading to dust emission; as a result, the dust removal efficiency declines, the color of the exhaust smoke worsens, and the pressure difference changes. 4) Pay attention to the airtightness of various parts of the dust collector, and check the modifications to the gas flow rate in the cyclone and the dust collection concentration. 2. Preparatory work before startup 1) Check whether all adjacent parts are in proper contact with each other. 2) Verify the airtightness of the joints between the dust collector and the flue, between the dust collector and the ash hopper, between the ash hopper and the ash discharge equipment, as well as the ash conveying equipment, in order to eliminate any leaks of ash or air. 3) Close the damper valves, start the ventilator; once there are no abnormal phenomena, gradually open the damper valves so that the dust collector can handle a normal volume of dust-laden gas.