聯合脫硫脫汞的濕式氨法煙氣凈化工藝及其系統
來源：武漢凱迪電力環保有限公司(si) 閱(yue)讀：3757 更新時間：2008-11-19 08:45該工藝采用氯氣(qi)(qi)作為(wei)氧(yang)化(hua)劑對煙氣(qi)(qi)中(zhong)的(de)單質汞(gong)(gong)(gong)(gong)進行充(chong)分氧(yang)化(hua)，并通過改進的(de)濕式氨(an)法脫(tuo)硫(liu)(liu)工藝使(shi)氧(yang)化(hua)后的(de)氣(qi)(qi)相(xiang)二價離子(zi)汞(gong)(gong)(gong)(gong)轉化(hua)為(wei)液相(xiang)二價離子(zi)汞(gong)(gong)(gong)(gong)，進而(er)通過液相(xiang)二價離子(zi)汞(gong)(gong)(gong)(gong)穩定(ding)劑使(shi)液相(xiang)二價離子(zi)汞(gong)(gong)(gong)(gong)轉化(hua)為(wei)穩定(ding)的(de)硫(liu)(liu)化(hua)汞(gong)(gong)(gong)(gong)沉淀。
其(qi)系(xi)統包(bao)括由氧化(hua)(hua)(hua)劑噴射裝置和靜電除塵(chen)器(qi)(qi)組成煙(yan)氣氧化(hua)(hua)(hua)脫(tuo)(tuo)汞(gong)預處(chu)理(li)系(xi)統；由反(fan)應吸收塔構(gou)成濕(shi)式氨法煙(yan)氣脫(tuo)(tuo)硫(liu)脫(tuo)(tuo)汞(gong)系(xi)統；由旋流分離(li)器(qi)(qi)、脫(tuo)(tuo)水(shui)(shui)器(qi)(qi)和干燥器(qi)(qi)構(gou)成脫(tuo)(tuo)硫(liu)副產物(wu)處(chu)理(li)系(xi)統；由廢水(shui)(shui)緩沖池、液(ye)相離(li)子(zi)(zi)汞(gong)反(fan)應箱(xiang)和澄清(qing)池構(gou)成硫(liu)化(hua)(hua)(hua)汞(gong)HgS沉淀處(chu)理(li)系(xi)統。該工藝及(ji)系(xi)統能有效(xiao)提高煙(yan)氣中(zhong)單質汞(gong)的氧化(hua)(hua)(hua)率(lv)，克服二(er)價離(li)子(zi)(zi)汞(gong)易還原(yuan)釋(shi)放(fang)的缺陷和過量氧化(hua)(hua)(hua)劑帶來的二(er)次污(wu)染問題，大幅提高脫(tuo)(tuo)硫(liu)脫(tuo)(tuo)汞(gong)效(xiao)率(lv)。
