水泥廠噴霧降溫系統工作原理：當感溫探頭傳輸的(de)溫度信號高出(chu)設定值后系統(tong)自(zi)動啟動，冷(leng)卻水(shui)(shui)自(zi)水(shui)(shui)源水(shui)(shui)箱經過(guo)濾(lv)器過(guo)濾(lv)后由多級水(shui)(shui)泵(beng)升壓，經出(chu)口(kou)管(guan)路送到噴嘴，產(chan)生的(de)細小水(shui)(shui)霧(wu)顆粒與高溫煙(yan)氣混合并(bing)迅(xun)速(su)蒸發(fa)，吸(xi)收煙(yan)氣的(de)大量熱能(neng)，使煙(yan)氣溫度迅(xun)速(su)降低并(bing)維持在120～180℃范圍內。

水泥窯頭(tou)采用(yong)的(de)噴(pen)(pen)(pen)(pen)霧降溫系統，一般(ban)(ban)(ban)大(da)致分為單(dan)流(liu)(liu)體(ti)(ti)和雙(shuang)流(liu)(liu)體(ti)(ti)兩種類(lei)型(xing)。單(dan)流(liu)(liu)體(ti)(ti)主(zhu)要依靠高壓(ya)(ya)(ya)水泵對噴(pen)(pen)(pen)(pen)射水流(liu)(liu)進行加壓(ya)(ya)(ya)，經過噴(pen)(pen)(pen)(pen)嘴(zui)的(de)機械特性(xing)達(da)到霧化效果。該(gai)方(fang)式(shi)噴(pen)(pen)(pen)(pen)嘴(zui)處壓(ya)(ya)(ya)力(li)相對較大(da)，依據噴(pen)(pen)(pen)(pen)嘴(zui)類(lei)型(xing)工(gong)作(zuo)(zuo)壓(ya)(ya)(ya)力(li)一般(ban)(ban)(ban)在(zai)(zai)(zai)0.6～1.2MPa之間(jian)，水泵功(gong)率(lv)在(zai)(zai)(zai)15kW左右(you)，優點在(zai)(zai)(zai)于(yu)結構簡單(dan)，耗(hao)氣量低，投入成本(ben)相對較小。雙(shuang)流(liu)(liu)體(ti)(ti)是將高壓(ya)(ya)(ya)氣體(ti)(ti)和液(ye)體(ti)(ti)直(zhi)接在(zai)(zai)(zai)噴(pen)(pen)(pen)(pen)嘴(zui)內部(bu)混合，在(zai)(zai)(zai)高壓(ya)(ya)(ya)射流(liu)(liu)狀態下通(tong)過氣體(ti)(ti)對液(ye)體(ti)(ti)切割(ge)達(da)到霧化目的(de)，因此噴(pen)(pen)(pen)(pen)射介質除了水外(wai)，還需要提供一定壓(ya)(ya)(ya)力(li)的(de)壓(ya)(ya)(ya)縮空(kong)氣。雙(shuang)流(liu)(liu)體(ti)(ti)噴(pen)(pen)(pen)(pen)嘴(zui)的(de)工(gong)作(zuo)(zuo)壓(ya)(ya)(ya)力(li)一般(ban)(ban)(ban)在(zai)(zai)(zai)0.3～0.6MPa之間(jian)，工(gong)作(zuo)(zuo)氣壓(ya)(ya)(ya)在(zai)(zai)(zai)0.5MPa左右(you)，水泵功(gong)率(lv)約5.5kW。優點在(zai)(zai)(zai)于(yu)霧化效果好，水霧粒徑可達(da)3～4μm；噴(pen)(pen)(pen)(pen)嘴(zui)孔(kong)徑大(da)，對水質的(de)適(shi)應(ying)性(xing)更強(qiang)。

水泥廠噴霧降溫系統控制

綜合(he)考慮使用(yong)(yong)頻率和(he)投入(ru)成本，水泥(ni)窯頭(tou)(tou)(tou)較(jiao)多采(cai)(cai)用(yong)(yong)單(dan)流(liu)體噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)霧(wu)降溫(wen)(wen)(wen)系統，依(yi)據所(suo)采(cai)(cai)用(yong)(yong)的(de)(de)(de)噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)嘴(zui)(zui)(zui)(zui)類型和(he)所(suo)需噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)射流(liu)量(liang)來(lai)確(que)定不同(tong)風量(liang)和(he)溫(wen)(wen)(wen)降范圍下配備(bei)的(de)(de)(de)噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)槍(qiang)(qiang)(qiang)數(shu)(shu)(shu)量(liang)。一(yi)(yi)(yi)般(ban)而言，外資噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)霧(wu)公司（如美國spray）多采(cai)(cai)用(yong)(yong)六嘴(zui)(zui)(zui)(zui)廣角(jiao)噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)頭(tou)(tou)(tou)，即每(mei)把噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)槍(qiang)(qiang)(qiang)配有6個噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)嘴(zui)(zui)(zui)(zui)，如對(dui)(dui)于(yu)(yu)(yu)6000t/d及以下的(de)(de)(de)水泥(ni)窯頭(tou)(tou)(tou)，一(yi)(yi)(yi)般(ban)采(cai)(cai)用(yong)(yong)2～3把噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)槍(qiang)(qiang)(qiang)即可滿足要求，采(cai)(cai)用(yong)(yong)兩(liang)臺高(gao)壓水泵(beng)(beng)供水，水泵(beng)(beng)為一(yi)(yi)(yi)用(yong)(yong)一(yi)(yi)(yi)備(bei)。這種(zhong)噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)槍(qiang)(qiang)(qiang)數(shu)(shu)(shu)量(liang)較(jiao)少的(de)(de)(de)噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)霧(wu)模(mo)式在(zai)工(gong)(gong)作(zuo)(zuo)時，噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)槍(qiang)(qiang)(qiang)一(yi)(yi)(yi)直處于(yu)(yu)(yu)噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)霧(wu)狀態，調節流(liu)量(liang)大小主要依(yi)靠變頻器控(kong)(kong)(kong)制水泵(beng)(beng)的(de)(de)(de)轉速，可控(kong)(kong)(kong)溫(wen)(wen)(wen)度變化(hua)的(de)(de)(de)連(lian)續性(xing)較(jiao)好。國內(nei)噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)霧(wu)多采(cai)(cai)用(yong)(yong)螺旋噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)嘴(zui)(zui)(zui)(zui)或雙嘴(zui)(zui)(zui)(zui)、三(san)嘴(zui)(zui)(zui)(zui)的(de)(de)(de)廣角(jiao)噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)頭(tou)(tou)(tou)，噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)槍(qiang)(qiang)(qiang)數(shu)(shu)(shu)量(liang)相(xiang)對(dui)(dui)較(jiao)多。早(zao)期(qi)多采(cai)(cai)用(yong)(yong)單(dan)嘴(zui)(zui)(zui)(zui)噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)頭(tou)(tou)(tou)，如對(dui)(dui)于(yu)(yu)(yu)3　000t/d以上水泥(ni)窯頭(tou)(tou)(tou)，噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)槍(qiang)(qiang)(qiang)數(shu)(shu)(shu)量(liang)一(yi)(yi)(yi)般(ban)在(zai)12～20把之間(jian)，隨著(zhu)噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)嘴(zui)(zui)(zui)(zui)技術的(de)(de)(de)改進，目(mu)前噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)槍(qiang)(qiang)(qiang)數(shu)(shu)(shu)量(liang)一(yi)(yi)(yi)般(ban)在(zai)4～6把之間(jian)，同(tong)樣采(cai)(cai)用(yong)(yong)兩(liang)臺高(gao)壓水泵(beng)(beng)供水，一(yi)(yi)(yi)用(yong)(yong)一(yi)(yi)(yi)備(bei)。對(dui)(dui)于(yu)(yu)(yu)早(zao)期(qi)多噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)槍(qiang)(qiang)(qiang)的(de)(de)(de)噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)霧(wu)系統，控(kong)(kong)(kong)制上常采(cai)(cai)用(yong)(yong)開啟或關閉噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)槍(qiang)(qiang)(qiang)的(de)(de)(de)工(gong)(gong)作(zuo)(zuo)數(shu)(shu)(shu)量(liang)來(lai)實(shi)現(xian)對(dui)(dui)溫(wen)(wen)(wen)度的(de)(de)(de)控(kong)(kong)(kong)制，因(yin)此(ci)可控(kong)(kong)(kong)溫(wen)(wen)(wen)度的(de)(de)(de)連(lian)續性(xing)較(jiao)差，難以實(shi)現(xian)精準控(kong)(kong)(kong)溫(wen)(wen)(wen)。現(xian)階段采(cai)(cai)用(yong)(yong)4～6把噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)槍(qiang)(qiang)(qiang)時，多采(cai)(cai)用(yong)(yong)控(kong)(kong)(kong)制噴(pen)(pen)(pen)(pen)(pen)(pen)(pen)槍(qiang)(qiang)(qiang)的(de)(de)(de)工(gong)(gong)作(zuo)(zuo)數(shu)(shu)(shu)量(liang)和(he)水泵(beng)(beng)變頻控(kong)(kong)(kong)制相(xiang)結合(he)的(de)(de)(de)方式達到(dao)準確(que)控(kong)(kong)(kong)溫(wen)(wen)(wen)的(de)(de)(de)目(mu)的(de)(de)(de)。