摘要:
辽宁省燃煤电厂超低排放工作全面推进,燃煤电厂经超低排放改造后,污染物指标控制限值要求为颗粒物10 mg/m3。某燃煤电厂面临烟气超低排放要求,提标改造现有除尘器,每台炉配两台双室六电场干式低温静电除尘器,并在吸收塔喷淋层下方增设聚气环,在吸收塔净烟道处加装一级烟道除雾器。除尘器和吸收塔改造后,除尘效率由99.8%提高到99.94%,改造后总出口浓度6.80 mg/m3,改造后排放量6.0 kg/h,削减量16 kg/h,各工况下烟气污染物折算浓度均符合标准要求。
Abstract:
The ultra-low emission work of coal-fired power plants in Liaoning Province has been comprehensively promoted. After the ultra-low emission transformation of coal-fired power plants, the limit value of pollutant index control is required to be 10 mg/m3 for particulate matter. Facing with the requirement of flue gas ultra-low emission in a coal-fired power plant, the existing dust remover was upgraded according to the standard. Each furnace was equipped with two double-chamber six-electric field dry low-temperature electrostatic precipitators, and a gas-collecting ring was added below the spray layer of the absorption tower, a first-level flue gas remover was installed at the clean flue of the absorption tower. After the transformation of the dust remover and absorption tower, the dust removal efficiency increased from 99.8% to 99.94%. After the transformation, the total outlet concentration was 6.80 mg/m3, the emission was 6.0 kg/h, and the reduction was 16 kg/h. The converted concentration of flue gas pollutants under various working conditions met the standard requirements.
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