燃煤电厂电除尘器超低排放升级改造

发布时间：2018-03-30 08:44

  本文选题：超低排放　切入点：电除尘器改造　出处：《高电压技术》2017年02期

【摘要】：面临烟气超低排放要求,燃煤电厂现有电除尘器改造需求巨大。传统电除尘器改造依据修正的Deutsch公式,仅能通过增大本体的方式来控制排放浓度。因此,定义峰值、平均电场强度和比收尘面积的乘积作为电除尘指数,在其指导下可通过提高放电电压和电流来降低粉尘排放。在此基础上通过采用三相电源、降低烟气温度至110℃以下、应用前端电场侧部振打和末端电场顶部振打的混合振打、协同脱硫塔和电除尘器等优化改造措施,均可将电除尘器出口浓度控制在10 mg/m3以下。将袋式除尘器改造为电除尘器则可在控制颗粒物排放的同时,进一步减少酸雾、盐结晶等引起的堵塞和烟羽问题。
[Abstract]:In the face of the requirement of ultra-low flue gas emission, there is a huge demand for the retrofit of the existing electrostatic precipitators in coal-fired power plants. According to the modified Deutsch formula, the traditional electrostatic precipitator transformation can only control the emission concentration by increasing the bulk. Therefore, the peak value is defined. The product of the average electric field intensity and the specific dust collecting area can be used as the precipitating index, under the guidance of which the dust emission can be reduced by increasing the discharge voltage and current. On this basis, the flue gas temperature can be reduced to below 110 鈩，

本文编号：1685171