工(gong)作原理
石膏法脫硫的原理是依據雙堿法脫硫與石灰石膏法脫硫相結合,利用電石渣中含有的OH-與煙氣中的二氧化硫反應,從而進行脫硫,達到排放要求。電石渣脫硫的產物脫硫石膏主要應用于凈水裝置和建筑行業。從而實現電石渣固廢的有效處理。
主要設備(bei)
漿液制備系(xi)(xi)統(tong)(tong)(tong)(tong)(tong)、堿液制備系(xi)(xi)統(tong)(tong)(tong)(tong)(tong)、脫硫塔系(xi)(xi)統(tong)(tong)(tong)(tong)(tong)、除霧系(xi)(xi)統(tong)(tong)(tong)(tong)(tong)、脫硫產物(wu)除水系(xi)(xi)統(tong)(tong)(tong)(tong)(tong)、電控系(xi)(xi)統(tong)(tong)(tong)(tong)(tong)、檢(jian)測系(xi)(xi)統(tong)(tong)(tong)(tong)(tong)等。
工藝優點
(1)具(ju)有(you)較好的經濟技術指標。運(yun)行成本僅為(wei)其它工(gong)藝(yi)的30~70%。
(2)脫硫效率高達99.9%以上,可滿足(zu)環保(bao)SO2排放低于(yu)100mg/Nm3的要(yao)求。
(3)吸收劑價格便宜。
(4)技(ji)術成熟(shu),運行(xing)可(ke)靠(kao)性高。由(you)于設(she)置(zhi)了多級反應吸收裝置(zhi),因此當(dang)任何一臺(tai)設(she)備出(chu)現(xian)問題時(shi),均有其它(ta)設(she)備可(ke)以補(bu)足脫(tuo)硫(liu)效率,因此整套(tao)系統可(ke)以不間斷(duan)地運行(xing)。
(5)設(she)備(bei)檢修方便(bian),每層噴(pen)(pen)淋,每個(ge)噴(pen)(pen)淋管均可(ke)(ke)單獨拆卸,可(ke)(ke)實現在線更換噴(pen)(pen)頭,不需要(yao)停機更換。
(6)產生的脫硫產物為石膏,可(ke)以綜合利用,無廢物排出。