MVR蒸發(fā)器MVR EVAPORATOR
機械蒸汽壓縮MVR或MVC（Mechanical Vapor Compression）蒸發(fā)器，其原理是利用蒸汽壓縮機壓縮蒸發(fā)產(chǎn)生的二次蒸汽，提高二次蒸汽熱量和溫度，壓縮后的蒸汽打入蒸發(fā)器作為熱源，再次使其原液產(chǎn)生蒸發(fā)，從而達到不需要外部鮮蒸汽，依靠蒸發(fā)器系統(tǒng)自循環(huán)來達到蒸發(fā)濃縮的目的。通過PLC控制系統(tǒng)、組態(tài)軟件等工程軟件來控制系統(tǒng)溫度、壓力、馬達轉(zhuǎn)速，保持蒸發(fā)器穩(wěn)定、高效智能運行。
性能特點及適用范圍:
1、沒有廢熱蒸汽排放，節(jié)能效果十分顯著，相當(dāng)于10效蒸發(fā)器；
2、運用該技術(shù)可實現(xiàn)對二次蒸汽的逆流洗滌，因此冷凝水干物含量遠低于多效蒸發(fā)器；
3、采用低溫負(fù)壓蒸發(fā)（50-90℃），有利于防止被蒸發(fā)物料的高溫變性；
4、MVR蒸發(fā)器是傳統(tǒng)多效降膜蒸發(fā)器的換代產(chǎn)品，是在單效蒸發(fā)器的基礎(chǔ)上通過對二次蒸汽逆流洗滌及再壓縮重新利用。
凡單效及多效蒸發(fā)器適用的物料，均適合采用MVR蒸發(fā)器，在技術(shù)上具有完全可替代性，并具有更優(yōu)良的環(huán)保與節(jié)能特性。
MVR蒸發(fā)器技術(shù)由于其節(jié)能效果顯著，70年代開始在國外迅速發(fā)展，現(xiàn)已廣泛使用，應(yīng)用于工業(yè)廢水處理及乳品、制糖、淀粉、氧化鋁、造紙、已內(nèi)酰胺、海水淡化、煉焦廠）回收二氧化硫生產(chǎn)硫氨）、鹽化工等很多生產(chǎn)領(lǐng)域。
Summary:
Mechanical vapor compression MVR or MVC(Mechanical Vapor Compression) evaporator, the principle is to use the secondary steam which is produced through compressing the steam by the steam compressor, secondary steam heat and temperature is increased by the compressor, steam compressed into the evaporator as the heat source, again makes the raw material liquid start evaporation, so there is no need to rely on external fresh steam, just need to rely on the evaporator system itself circulating to achieve the purpose of evaporation. Through the PLC control system, configuration software and engineering software to control the temperature, pressure, speed motor system, maintain stable, intelligent and efficient operation of the evaporator.
Performance Characteristics and Scope Of Application:
1. No waste heat steam emissions, energy-saving effect is very sigmificant, which is ecquivalent of 10 effect evaporator.
2. Using this technology can achieve to countercurrent washing of secondary steam, therefore the dry matter content in condensed water is far lower than the number of evaporator.
3. Using low temperature negative pressure evaporation(50-90℃), help to prevent the degeneration resulted from high temperature evaporation.
4. MVR evaporator is a substitute of traditional multi-effect falling-
film evaporator, is based on single effect evaporator through the reuse of the secondary steam countercurrent washing and recompression. All material that applicable for single effect and multi-effect evaporator, are suitable for use in the MVR evaporator, technically have the substitutability. It has perfect characteristics of environmental protection and energy saving. Because of its significant energy-saving effect, MVR evaporator technology started rapid development in foreign countries at the beginning of 70's, now is widely used, which is used in industrial wastewater treatment and dairy, sugar, starch, alumina, papermaking, caprolactam, seawater desalination, coking plant(recovery of sulfur dioxide production sulfur ammonia), salt chemical industry, and other many production areas.
