The utility model relates to a compound bed layer purification tower, which comprises a purification tower body and an ammonia spray system. The main body of the purification tower is provided with a desulphurizing bed, a mixing chamber and a denitrification bed layer in turn from the intake side to the outgassing side, and the desulphurization bed is connected with the treated flue gas, the mixing chamber of the ammonia spraying and the desulphurization bed layer is connected, the denitrification bed layer and the spray are used. The ammonia mixing chamber is connected. The desulfurizing bed and the denitration bed are arranged in the same tower body, the structure is compact, the space is saved, and the overall cost of the equipment is reduced. In the way of high speed ammonia injection in the narrow cavity of the mixing chamber, the forced convection is made full use of the gas jet kinetic energy and the mass transfer efficiency is high. The uniform distribution of ammonia in the interlayer space can be realized in a short time, the efficiency of denitrification is improved and the two pollution of the ammonia escape to the environment is reduced. To a large extent, the thickness of the denitrification bed will be reduced, so that the overall pressure drop of the flue gas through the purification tower can be reduced, and the energy consumption of the equipment will be reduced.
【技术实现步骤摘要】
一种复合床层净化塔
:本技术涉及一种可以对含有二氧化硫SO2、氮氧化物NOx、粉尘、汞、二噁英等污染物进行一次性脱除的烟气净化塔,尤其是一种复合床层净化塔。
技术介绍
:活性焦烟气净化技术是一种可资源化的干法烟气净化技术,可高效脱除烟气中污染物中的粉尘、二氧化硫SO2、氮氧化物NOX、汞、二噁英等污染物,并且节省珍贵的水资源,对环境无二次污染,适用于净化燃煤烟气、垃圾焚烧烟气、烧结烟气等。活性焦烟气净化技术以活性焦颗粒作为吸附剂,烟气经过含有活性焦的床层时,烟气中的二氧化硫S02吸附到活性焦吸附剂上,然后被催化氧化为吸附态的硫酸H2S04,存在于活性碳的中微孔内;氮氧化物NOX与还原性的氨气NH3发生选择性催化还原反应,生成无害的氮气N2和水H20。汞、和二噁英被吸附反应除去,有害烟尘则通过与活性焦颗粒碰撞捕捉的方式除去。随着吸附作用的进行,活性焦对有害物质的吸附会逐渐饱和,吸附饱和的活性焦在重力作用下从净化塔底部排出,经过再生恢复吸附能力以后,在从净化塔顶部进入,进行循环利用。对于需要同时脱硫脱硝的一体化脱除系统,氨气NH3与二氧化硫SO2的反应、氨气NH3与氮 ...
【技术保护点】
一种复合床层净化塔,包括净化塔主体(Ⅰ)和喷氨系统(Ⅱ),其特征在于:净化塔主体(Ⅰ)由左向右依次设有脱硫床层(1)、喷氨混合室(2)、脱硝床层(3);脱硫床层(1)与待处理烟气相连通,喷氨混合室(2)与脱硫床层(1)相连通,脱硝床层(3)与喷氨混合室(2)相连通,处理后烟气与脱硝床层(3)相连通;脱硫床层(1)进气侧设有脱硫床层前侧壁(101),脱硫床层(1)与喷氨混合室(2)之间设有脱硫床层后侧壁(102)、喷氨混合室(2)与脱硝床层(3)之间设有脱硝床层前侧壁(301),脱硝床层(3)出气侧设有脱硝床层后侧壁(302);从脱硫床层前侧壁(101)到脱硝床层后侧壁(30 ...
【技术特征摘要】
1.一种复合床层净化塔,包括净化塔主体(Ⅰ)和喷氨系统(Ⅱ),其特征在于:净化塔主体(Ⅰ)由左向右依次设有脱硫床层(1)、喷氨混合室(2)、脱硝床层(3);脱硫床层(1)与待处理烟气相连通,喷氨混合室(2)与脱硫床层(1)相连通,脱硝床层(3)与喷氨混合室(2)相连通,处理后烟气与脱硝床层(3)相连通;脱硫床层(1)进气侧设有脱硫床层前侧壁(101),脱硫床层(1)与喷氨混合室(2)之间设有脱硫床层后侧壁(102)、喷氨混合室(2)与脱硝床层(3)之间设有脱硝床层前侧壁(301),脱硝床层(3)出气侧设有脱硝床层后侧壁(302);从脱硫床层前侧壁(101)到脱硝床层后侧壁(302)之间设置有的纵向连接板(5),纵向连接板(5)之间的间距为2000mm~3000mm;喷氨系统(Ⅱ)包括氨气主管道(401)、10~15个氨气分支管(402)和5~10个氨气喷嘴(403),氨气主管道(401)布置于喷氨混合室(2)的外侧,氨气分支管(402)和氨气喷嘴(403)设置在喷氨混合室(2)的空腔内。2.按照权利要求1所述的复合床层净化塔,其特征在于:所述脱硫床层前侧壁(101)为百叶窗或条形格栅,所述脱硫床层后侧壁(102)为百叶窗,所述脱硝床层前侧壁(301)为百叶窗,所述脱硝床层后侧壁(...
【专利技术属性】
技术研发人员:梁新文,刘德时,贾晓辉,黄运涛,赵石军,李冰,梁翠翠,杨夫裕,叶水祥,
申请(专利权)人:一重集团大连工程建设有限公司,
类型:新型
国别省市:辽宁,21
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。