■熔鹽電加熱器：

　　熔(rong)(rong)鹽(yan)(yan)(yan)電(dian)(dian)加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)器(qi)(qi)(qi)是(shi)一(yi)(yi)(yi)種電(dian)(dian)加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)設備,用(yong)(yong)于對流動的(de)液態(tai)(tai)(tai)、氣態(tai)(tai)(tai)介質的(de)升(sheng)溫、保溫、加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)。熔(rong)(rong)鹽(yan)(yan)(yan)電(dian)(dian)加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)器(qi)(qi)(qi)利(li)用(yong)(yong)特殊(shu)管狀(zhuang)電(dian)(dian)熱(re)(re)(re)(re)(re)元件結合法(fa)蘭集束(shu)的(de)形式(shi)與(yu)壓力容器(qi)(qi)(qi)組成(cheng)(cheng)一(yi)(yi)(yi)個供熱(re)(re)(re)(re)(re)整(zheng)體(ti),利(li)用(yong)(yong)加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)二元熔(rong)(rong)鹽(yan)(yan)(yan)或三(san)元熔(rong)(rong)鹽(yan)(yan)(yan)作為(wei)加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)介質。一(yi)(yi)(yi)般這種加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)方式(shi)與(yu)熔(rong)(rong)鹽(yan)(yan)(yan)罐組成(cheng)(cheng)一(yi)(yi)(yi)個整(zheng)體(ti),當(dang)常溫下的(de)硝(xiao)鹽(yan)(yan)(yan)倒入熔(rong)(rong)鹽(yan)(yan)(yan)罐中以后(hou)，利(li)用(yong)(yong)熔(rong)(rong)鹽(yan)(yan)(yan)罐內(nei)的(de)少(shao)量電(dian)(dian)熱(re)(re)(re)(re)(re)元件給其預(yu)熱(re)(re)(re)(re)(re)，使(shi)之變(bian)為(wei)液態(tai)(tai)(tai)，然后(hou)通過熔(rong)(rong)鹽(yan)(yan)(yan)泵抽取熔(rong)(rong)鹽(yan)(yan)(yan)往加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)器(qi)(qi)(qi)內(nei)部流，進一(yi)(yi)(yi)步給熔(rong)(rong)鹽(yan)(yan)(yan)增溫，到達熔(rong)(rong)鹽(yan)(yan)(yan)加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)器(qi)(qi)(qi)出口(kou)處已經基本完成(cheng)(cheng)加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)的(de)目的(de)，并與(yu)用(yong)(yong)戶的(de)用(yong)(yong)熱(re)(re)(re)(re)(re)設備形成(cheng)(cheng)一(yi)(yi)(yi)個循環(huan)的(de)整(zheng)體(ti)，源(yuan)(yuan)源(yuan)(yuan)不斷的(de)給其加(jia)(jia)(jia)熱(re)(re)(re)(re)(re)，從而(er)滿足工藝(yi)的(de)要求。

■熔(rong)鹽電加熱器應(ying)用(yong)范圍：

　　 熔鹽電加熱器(qi)廣(guang)泛應(ying)用于儲(chu)能(neng)、儲(chu)熱、火電調(diao)峰、化(hua)(hua)肥(fei)、三聚(ju)氫(qing)胺、氧化(hua)(hua)鋁等(deng)高溫加熱生產工藝。

■熔鹽電(dian)加熱(re)器控制系統概述：

　　1、有常規的電氣保護(hu)，如流量和短(duan)路(lu)保護(hu)等。

　　2、有一套獨(du)立于溫(wen)度控(kong)制的超(chao)溫(wen)報警系統，當(dang)電(dian)(dian)加熱器(qi)內部溫(wen)度超(chao)過計(ji)定值時，它(ta)將不(bu)可自動復位(wei)地關閉電(dian)(dian)加熱器(qi)，并輸出(chu)一個(ge)觸(chu)點信號(hao)。

　　3、有一(yi)套獨(du)立的低(di)液(ye)位報警，當液(ye)位低(di)于要求值時，它(ta)將自動(dong)關閉電加熱器，并(bing)輸出一(yi)個信號。

　　4、提(ti)供數個聯鎖接(jie)口，以便和其它設備如泵、流量(liang)（壓力）開關等裝(zhuang)置(zhi)聯鎖，確保(bao)加熱器加熱時有(you)一定流量(liang)的介質在(zai)流動，保(bao)證系(xi)統的安全。

　　5、控制可(ke)以向DCS系統(tong)提供加(jia)熱系統(tong)處于(yu)運行、停止(zhi)、超溫報警、液位信(xin)(xin)號（低液位報警）、互(hu)鎖狀(zhuang)態、溫度信(xin)(xin)號（4~20mA）等信(xin)(xin)號，除溫度信(xin)(xin)號外，它們均(jun)為無源觸點；可(ke)以接受DCS發出的(de)啟動、停止(zhi)操(cao)作命令，要(yao)求的(de)觸點容量亦為220V   1A。

　　6、具有PID溫度調(diao)節功(gong)能(neng)，加熱(re)(re)系(xi)統(tong)可以通(tong)過程(cheng)序設置介質(zhi)的升(sheng)溫曲線，并能(neng)在流(liu)量不足(zu)或(huo)停止加熱(re)(re)后，根據(ju)(ju)工(gong)藝要(yao)求控(kong)(kong)(kong)制泵，本控(kong)(kong)(kong)制系(xi)統(tong)采用多級控(kong)(kong)(kong)制技術，即把加熱(re)(re)器(qi)分成幾組，其中(zhong)一(yi)組也就是(shi)很大的一(yi)組可以無(wu)級調(diao)壓，根據(ju)(ju)出(chu)(chu)口溫度，經運算后，控(kong)(kong)(kong)制系(xi)統(tong)自動控(kong)(kong)(kong)制加熱(re)(re)器(qi)每組的通(tong)斷(duan)和另一(yi)組加熱(re)(re)器(qi)的輸出(chu)(chu)功(gong)率，達到無(wu)級調(diao)功(gong)。這(zhe)樣，能(neng)很有效(xiao)地達到提高控(kong)(kong)(kong)溫精(jing)度的目的。