The present invention proposes an electric bag composite dust collector based on the synergistic removal of Hg/SO3 by intermediate injection, which comprises an inlet head, an electric area and a bag area arranged in turn according to the direction of flue gas flow. The inlet head is connected with an electric area. A diversion device and a dry powder injection device are installed in the flue between the electric area and the bag area. The air distribution box is arranged in the bag area, and the electric area and the bag area are connected with each other. A number of ash hoppers are arranged under the shell of the area. Under the ash hopper of the first electric field in the area, a coarse ash output pipeline is arranged. The output terminal of the coarse ash output pipeline is provided with a coarse ash aggregate device. The output terminal of the coarse ash aggregate device is connected with the storage pump through a mechanical grinding crushing device, a reagent addition and a mixing device in turn, and the output terminal of the storage pump is connected with the dry through a Venturi launcher. The input end of the powder injection conveying pipeline is connected, and the output end of the dry powder injection conveying pipeline is connected with the dry powder injection device. It has the functions of pre-coated ash, Hg removal and SO3 removal, and meets the emission standards.
【技术实现步骤摘要】
一种基于中间喷射的Hg/SO3协同脱除的电袋复合除尘器
本专利技术涉及电袋除尘的
,特别是一种基于中间喷射的Hg/SO3协同脱除的电袋复合除尘器。
技术介绍
燃煤电厂烟尘污染控制水平的提高,对改善我国城市大气质量现状至关重要。鉴于颗粒物污染重大的环境和社会影响,国家发改委等三部委联合印发《煤电节能减排升级与改造行动计划(2014~2020年)》,明确规定了东部地区新建燃煤发电机组大气污染物排放浓度基本达到燃气轮机组标准限值,即基准氧含量6%条件下,烟尘、SO2、NOx排放浓度分别不高于10mg/m3、35mg/m3、50mg/m3,鼓励西部地区新建机组接近或达到燃气轮机组标准限值。超低排放已成为燃煤机组污染治理的主旋律。传统的电袋除尘装置仅作为除尘装置,无Hg/SO3协同脱除性能或性能较低。Hg/SO3排放指标不能满足国外(美国Hg:2~5μg/m3,美国SO3:0.6~20mg/m3)及国内部分地方(北京Hg:0.5μg/m3,上海SO3:5mg/m3)标准要求。并且传统的活性炭脱Hg或碱基脱SO3技术投资较大,运行费用较高。现提出一种基于中间喷射 ...
【技术保护点】
1.一种基于中间喷射的Hg/SO3协同脱除的电袋复合除尘器,其特征在于:包括按烟气流动方向依次设置的进口封头(5)、电区(1)、袋区,所述进口封头(5)与电区(1)相通,所述电区(1)、袋区之间的烟道内设有安装有导流装置(17)和干粉喷射装置(31),所述袋区内设有气流分布箱(18),所述气流分布箱(18)的顶部设有与其相通的高净气室(14),所述高净气室(14)的一端与外界相连通,所述电区(1)、袋区的壳体(8)下方设有若干个灰斗(9),所述电区(1)第一电场的灰斗(9)下布置粗灰输出管路(22),所述粗灰输出管路(22)的输出端设有粗灰集料装置(23),所述粗灰集料装置 ...
【技术特征摘要】
1.一种基于中间喷射的Hg/SO3协同脱除的电袋复合除尘器,其特征在于:包括按烟气流动方向依次设置的进口封头(5)、电区(1)、袋区,所述进口封头(5)与电区(1)相通,所述电区(1)、袋区之间的烟道内设有安装有导流装置(17)和干粉喷射装置(31),所述袋区内设有气流分布箱(18),所述气流分布箱(18)的顶部设有与其相通的高净气室(14),所述高净气室(14)的一端与外界相连通,所述电区(1)、袋区的壳体(8)下方设有若干个灰斗(9),所述电区(1)第一电场的灰斗(9)下布置粗灰输出管路(22),所述粗灰输出管路(22)的输出端设有粗灰集料装置(23),所述粗灰集料装置(23)的输出端设有机械研磨破碎装置(24),所述机械研磨破碎装置(24)的输出端通过药剂添加及混合装置(25)与储料仓泵(27)相连,所述储料仓泵(27)的输出端通过文丘里发射器(28)与干粉喷射输送管路(30)的输入端相连,所述干粉喷射输送管路(30)的输出端与干粉喷射装置(31)相连。2.如权利要求1所述的一种基于中间喷射的Hg/SO3协同脱除的电袋复合除尘器,其特征在于:所述粗灰输出管路(22)上安装有控制阀(21),...
【专利技术属性】
技术研发人员:陈招妹,刘含笑,颜士娟,郭高飞,许东旭,罗诗凯,王建忠,沈敏超,罗亮,
申请(专利权)人:浙江菲达环保科技股份有限公司,
类型:发明
国别省市:浙江,33
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。