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玻璃钢脱硫塔


  玻璃钢脱硫塔工作原理

  1、热烟气进入预洗涤塔,与饱和硫酸铵溶液接触,烟气在此过程中被冷却,同时,由于饱和硫酸铵溶液中水的蒸发而析出硫酸铵晶体。已被冷却的烟气通过除雾器进入SO2吸收塔。

  2、在吸收塔中,氨与水混合成氨液。烟气中的SO2在此被吸收,与氨反应生成硫酸铵。

  3、脱硫后烟气经120米高的烟囱排入大气。硫酸铵溶液被送入预洗涤塔循环利用。预洗涤塔中的硫酸铵料浆进入脱水系统。先经水利旋流器脱水,然后经离心机得到硫酸铵滤饼。从旋流器和离心机回收的清液返回预洗涤器,循环利用。硫酸铵滤饼被送至造粒系统,得到高利用价值的颗粒硫酸铵肥料,在被火车或者卡车运走前,存放在能容纳50000吨硫酸铵的圆顶储仓内。

  玻璃钢脱硫塔作用;

  脱硫塔可采用CaO粉作为脱硫剂,或者水等采用湿法脱硫。

  脱硫塔需要的参数有:进口烟气量、进口烟气温度、进口含硫量、进口含烟尘量、出口含硫量、O阻力损失等。

  脱硫塔可做自控系统,做到一切靠电动实行操作的整体装置。

  玻璃钢脱硫塔烟囱施工质量控制;

  浓缩塔和吸收塔PP塑料衬里施工时,pp塑料衬里与塔基内壳贴合应紧密,不得有脱开、空层等现象。PP塑料板搭接缝处应采用热熔法焊接。焊接坡口应符合设计规定,焊接速率和焊接工艺参数应符合焊接工艺评定的要求。焊接时,在上、下两板搭接内缝处每200mm处先点焊固定,再采用热风枪熔融本体加压焊接,搭接缝处应用焊条满焊封缝,焊缝平整光滑无缺陷。

  玻璃纤维增强塑料烟囱施工质量控制,一是玻璃钢复合材料烟囱现场制作质量,纤维增强塑料类材料制成品的质量应符合相应标准。二是玻璃钢烟囱对接安装以及各段烟囱粘结质量。任何一个环节的失误都会使O终的防腐效果大打折扣,尤其是用环氧树脂、乙烯基酯树脂进行粘接的镶嵌槽口容易受低浓度酸腐蚀,进而影响玻璃钢烟囱的使用寿命。



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