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近日，CSPPLAZA光(guang)(guang)熱發電平(ping)臺會員單位——山東華寧電伴熱科(ke)技有限公司結合哈密熔鹽(yan)塔(ta)式50MW光(guang)(guang)熱發電項目分享了光(guang)(guang)熱發電項目電伴熱的選(xuan)型原則，具體(ti)如下(xia)：

哈(ha)密熔鹽塔式50MW光熱(re)發電項(xiang)目的(de)熔鹽吸(xi)熱(re)器(qi)系統(tong)(tong)由東(dong)(dong)方(fang)(fang)鍋爐自主設計(ji)和(he)供(gong)貨(huo)，其中(zhong)(zhong)，電伴熱(re)系統(tong)(tong)在(zai)吸(xi)熱(re)器(qi)系統(tong)(tong)的(de)設備和(he)管(guan)線中(zhong)(zhong)得到廣泛應用。我們作為東(dong)(dong)方(fang)(fang)電氣的(de)供(gong)貨(huo)商，提(ti)供(gong)了優質(zhi)的(de)電伴熱(re)產(chan)品(pin)，成功協助東(dong)(dong)方(fang)(fang)鍋爐順利完成50MW光熱(re)發電項(xiang)目建設。

目(mu)(mu)前塔式熔鹽(yan)光(guang)熱(re)技(ji)術已(yi)成為光(guang)熱(re)發電產業中(zhong)的(de)(de)主流(liu)技(ji)術之一，熔鹽(yan)同(tong)時作為吸熱(re)、儲熱(re)和(he)傳熱(re)工(gong)質。但(dan)是(shi)，熔鹽(yan)在(zai)物性(xing).上存在(zai)凝固點較(jiao)高(gao)的(de)(de)缺(que)陷，當系(xi)(xi)統(tong)工(gong)作溫(wen)度接近或低于(yu)其(qi)凝固點時，內部流(liu)動(dong)熔鹽(yan)就會(hui)發生結晶甚至凝固堵塞現(xian)象，導(dao)致設備(bei)損(sun)壞或系(xi)(xi)統(tong)停運。哈(ha)密項目(mu)(mu)吸熱(re)器系(xi)(xi)統(tong)的(de)(de)工(gong)質熔點約為220°C的(de)(de)二(er)元熔鹽(yan)。

根(gen)(gen)據(ju)塔式光(guang)熱(re)(re)(re)(re)(re)(re)(re)(re)太陽能(neng)(neng)發(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)站設計(ji)標準，熔融鹽管(guan)(guan)道及(ji)(ji)(ji)換熱(re)(re)(re)(re)(re)(re)(re)(re)器應設置(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)宜冗(rong)余配置(zhi)(zhi)。在吸熱(re)(re)(re)(re)(re)(re)(re)(re)器不能(neng)(neng)被陽光(guang)照射的(de)(de)部位也(ye)應設置(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)功率宜滿足預(yu)熱(re)(re)(re)(re)(re)(re)(re)(re)和防凝要求(qiu)叫。在太陽能(neng)(neng)光(guang)熱(re)(re)(re)(re)(re)(re)(re)(re)發(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)系(xi)(xi)統(tong)中，熔鹽凝固點溫(wen)(wen)(wen)度(du)較高，而且系(xi)(xi)統(tong)運行(xing)溫(wen)(wen)(wen)度(du)也(ye)很高，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)系(xi)(xi)統(tong)的(de)(de)預(yu)熱(re)(re)(re)(re)(re)(re)(re)(re)溫(wen)(wen)(wen)度(du)必須(xu)達到260~300 C以(yi)上(shang)(shang)，并且要求(qiu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)系(xi)(xi)統(tong)可以(yi)在600°C以(yi)上(shang)(shang)的(de)(de)使(shi)(shi)用溫(wen)(wen)(wen)度(du)下能(neng)(neng)夠長(chang)期(qi)穩定(ding)(ding)工作凹，因(yin)此，對(dui)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)系(xi)(xi)統(tong)的(de)(de)耐溫(wen)(wen)(wen)性能(neng)(neng)和可靠性提出了嚴格要求(qiu)。吸熱(re)(re)(re)(re)(re)(re)(re)(re)器系(xi)(xi)統(tong)布置(zhi)(zhi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)的(de)(de)部電(dian)(dian)(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)系(xi)(xi)統(tong)的(de)(de)選型(xing)原則是等值熱(re)(re)(re)(re)(re)(re)(re)(re)量(liang)(liang)替(ti)代補償(chang)，即電(dian)(dian)(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)帶(dai)的(de)(de)發(fa)熱(re)(re)(re)(re)(re)(re)(re)(re)量(liang)(liang)滿足維(wei)(wei)持特定(ding)(ding)溫(wen)(wen)(wen)度(du)下設備(bei)和管(guan)(guan)線的(de)(de)熱(re)(re)(re)(re)(re)(re)(re)(re)損失。根(gen)(gen)據(ju)設備(bei)及(ji)(ji)(ji)管(guan)(guan)線的(de)(de)操作溫(wen)(wen)(wen)度(du)和設計(ji)溫(wen)(wen)(wen)度(du)，參照伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)帶(dai)的(de)(de)維(wei)(wei)持溫(wen)(wen)(wen)度(du)及(ji)(ji)(ji)最高暴露溫(wen)(wen)(wen)度(du)來選擇合(he)適的(de)(de)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)帶(dai)，功率宜為(wei)設備(bei)及(ji)(ji)(ji)管(guan)(guan)線理(li)論(lun)熱(re)(re)(re)(re)(re)(re)(re)(re)損失值的(de)(de)1.2倍以(yi)上(shang)(shang)。選型(xing)時，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)補償(chang)的(de)(de)熱(re)(re)(re)(re)(re)(re)(re)(re)量(liang)(liang)不小(xiao)于(yu)設備(bei)和管(guan)(guan)線的(de)(de)實(shi)際最大(da)散熱(re)(re)(re)(re)(re)(re)(re)(re)量(liang)(liang)，并根(gen)(gen)據(ju)供電(dian)(dian)(dian)(dian)(dian)(dian)(dian)條件及(ji)(ji)(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)帶(dai)使(shi)(shi)用長(chang)度(du)等條件確(que)定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)帶(dai)的(de)(de)選型(xing)，確(que)定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)帶(dai)總長(chang)時需(xu)考慮管(guan)(guan)線附件.上(shang)(shang)的(de)(de)閥(fa)門及(ji)(ji)(ji)儀表等，并根(gen)(gen)據(ju)使(shi)(shi)用場所決定(ding)(ding)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)伴(ban)(ban)(ban)熱(re)(re)(re)(re)(re)(re)(re)(re)帶(dai)結構。

熔(rong)鹽(yan)管(guan)(guan)道通(tong)常根據環境溫(wen)度、介質(zhi)(zhi)、管(guan)(guan)徑、長度、保溫(wen)材質(zhi)(zhi)及厚度和(he)管(guan)(guan)線附件(jian)等計算管(guan)(guan)線的(de)熱(re)損失，確定電(dian)伴熱(re)帶輸(shu)出功率及電(dian)伴熱(re)帶型號。罐體(ti)根據保溫(wen)層材料的(de)厚度和(he)介質(zhi)(zhi)所需要維持的(de)溫(wen)度，求(qiu)得單位面積散熱(re)量(liang)后根據總散熱(re)量(liang)進行電(dian)伴熱(re)帶選型。

哈密光熱(re)(re)(re)項目(mu)中，電(dian)加熱(re)(re)(re)系統(tong)(tong)的(de)配(pei)置需(xu)(xu)滿足吸(xi)熱(re)(re)(re)器(qi)系統(tong)(tong)不工(gong)作時(shi)(shi)的(de)時(shi)(shi)間，長時(shi)(shi)間存留熔鹽(yan)的(de)管道和罐體有兩套獨立的(de)加熱(re)(re)(re)系統(tong)(tong)。電(dian)加熱(re)(re)(re)系統(tong)(tong)應滿足系統(tong)(tong)運行(xing)時(shi)(shi)和啟動前(qian)(qian)的(de)溫度需(xu)(xu)求(qiu)。當(dang)吸(xi)熱(re)(re)(re)器(qi)系統(tong)(tong)運行(xing)時(shi)(shi)，熔鹽(yan)管道及設備內充滿熔鹽(yan)，此時(shi)(shi)電(dian)加熱(re)(re)(re)系統(tong)(tong)應維(wei)持熔鹽(yan)管道、閥(fa)門和罐體的(de)溫度在290°C以上。系統(tong)(tong)啟動前(qian)(qian)，電(dian)伴熱(re)(re)(re)系統(tong)(tong)應滿足使空熔鹽(yan)管道、閥(fa)門和質及厚度和管線(xian)(xian)附件等計算管線(xian)(xian)的(de)熱(re)(re)(re)損失，確定電(dian)伴熱(re)(re)(re)帶輸出功(gong)率及電(dian)伴熱(re)(re)(re)帶型號。罐體根據保溫層材料的(de)厚度和介質所需(xu)(xu)要維(wei)持的(de)溫度，求(qiu)得單位面積散熱(re)(re)(re)量后根據總散熱(re)(re)(re)量進(jin)行(xing)電(dian)伴熱(re)(re)(re)帶選型。

哈(ha)密(mi)光熱(re)(re)(re)項(xiang)目中，電加熱(re)(re)(re)系(xi)(xi)統(tong)(tong)(tong)的(de)(de)(de)配(pei)置需滿足吸熱(re)(re)(re)器(qi)系(xi)(xi)統(tong)(tong)(tong)不工作(zuo)時(shi)(shi)(shi)的(de)(de)(de)時(shi)(shi)(shi)間，長(chang)時(shi)(shi)(shi)間存留熔(rong)(rong)鹽(yan)的(de)(de)(de)管道和罐體有兩(liang)套(tao)獨立的(de)(de)(de)加熱(re)(re)(re)系(xi)(xi)統(tong)(tong)(tong)。電加熱(re)(re)(re)系(xi)(xi)統(tong)(tong)(tong)應(ying)滿足系(xi)(xi)統(tong)(tong)(tong)運(yun)行時(shi)(shi)(shi)和啟(qi)動前(qian)的(de)(de)(de)溫度(du)(du)需求(qiu)。當吸熱(re)(re)(re)器(qi)系(xi)(xi)統(tong)(tong)(tong)運(yun)行時(shi)(shi)(shi)，熔(rong)(rong)鹽(yan)管道及設備內充滿熔(rong)(rong)鹽(yan)，此時(shi)(shi)(shi)電加熱(re)(re)(re)系(xi)(xi)統(tong)(tong)(tong)應(ying)維持熔(rong)(rong)鹽(yan)管道、閥門和罐體的(de)(de)(de)溫度(du)(du)在290°C以上。系(xi)(xi)統(tong)(tong)(tong)啟(qi)動前(qian)，電伴熱(re)(re)(re)系(xi)(xi)統(tong)(tong)(tong)應(ying)滿足使空熔(rong)(rong)鹽(yan)管道、閥門和罐體在24 h內從環境(jing)溫度(du)(du)預熱(re)(re)(re)至290°C。