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MVR-FF<\/span>降膜蒸發(fā)器<\/span><\/h2>

工作原理<\/span><\/span><\/b><\/p>

選用降膜形式蒸發(fā)器作為主蒸發(fā)單元,<\/span>以蒸發(fā)濃縮為操作目的。蒸發(fā)過程中稀物料從蒸發(fā)器頂部加入，經(jīng)液體分布裝置均勻分布到各換熱管內(nèi)，被殼程蒸汽加熱至沸騰汽化，物料憑借重力和下行二次汽的帶動作用沿?fù)Q熱管內(nèi)壁呈膜狀流下。在下流過程中，產(chǎn)生的二次蒸汽與濃縮液共同進(jìn)入蒸發(fā)室進(jìn)行氣液分離，濃縮液連續(xù)排離系統(tǒng)。分離后的二次蒸汽進(jìn)入壓縮機(jī)，經(jīng)壓縮后二次蒸汽品位提升，被作為熱源送入蒸發(fā)器殼程。殼程蒸汽放熱后冷凝為水排離系統(tǒng)。<\/span><\/span><\/p>

產(chǎn)品特點(diǎn)<\/span><\/span><\/b><\/p>

v  <\/span><\/span><\/span>膜狀流動的換熱過程，傳熱系數(shù)顯著高于滿管流蒸發(fā)器。<\/span><\/span><\/p>

v  <\/span><\/span><\/span>溫差損失小，在小溫差下仍能保證較高的傳熱系數(shù)，所需壓縮機(jī)壓比更小。<\/span><\/span><\/p>

v  <\/span><\/span><\/span>降膜蒸發(fā)器的開車、停車、操作簡單快捷，溫度響應(yīng)靈敏。<\/span><\/span><\/p>

v  <\/span><\/span><\/span>蒸發(fā)器內(nèi)的滯留物料量非常小，開車時(shí)間短，停車后可迅速將蒸發(fā)器內(nèi)的物料排空。<\/span><\/span><\/p>

v  <\/span><\/span><\/span>物料被加熱時(shí)間短，可保證熱敏性物料的優(yōu)良品質(zhì)。<\/span><\/span><\/p>

應(yīng)用范圍<\/span><\/span><\/b><\/p>

v  <\/span><\/span><\/span>用于低到高蒸發(fā)量的濃縮場合。<\/span><\/span><\/p>

v  <\/span><\/span><\/span>用于蒸發(fā)過程無固相產(chǎn)生或很少量固相的蒸發(fā)濃縮過程。<\/span><\/span><\/p>

v  <\/span><\/span><\/span>石化、制藥、果汁、飲料、乳品無固相濃縮。<\/span><\/span><\/p>

v  <\/span><\/span><\/span>蒸發(fā)結(jié)晶工藝無固相預(yù)濃縮。<\/span><\/span><\/p>

v  <\/span><\/span><\/span>含鹽廢水零排放的前期預(yù)濃縮。<\/span><\/p>

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文章來源：河北諾達(dá)化工設(shè)備有限公司<\/span><\/p>

公司網(wǎng)址：www.ndhgsb.com<\/span><\/p>

     www.hbndzb.com<\/span><\/p>

咨詢電話：0311-85850678<\/span><\/p>

企業(yè)郵箱：ndhgsb@163.com
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