TVR蒸發(fā)系統(tǒng)

特點(diǎn)：

噴射泵沒(méi)有活動(dòng)部件，不易磨損限度保證操作的可靠性使用一臺(tái)噴射泵節(jié)約的蒸汽耗量相當(dāng)于額外增加了一效蒸發(fā)器帶噴射泵的蒸發(fā)工藝，可有效減少未效的蒸發(fā)量，節(jié)省系統(tǒng)冷卻水耗量。除TVR外，MVR是最近化工行業(yè)發(fā)展迅速的新型蒸發(fā)技術(shù)，其基本原理是用壓縮機(jī)或者高壓蒸汽提高二次蒸汽的壓力和溫度，然后送回原蒸發(fā)器的加熱室，作為加熱蒸汽使用，或者以二次蒸汽為低溫?zé)嵩?，回收部分余熱。提高二次蒸汽的壓力和溫度常用的有兩種方法，一種是蒸汽機(jī)械再壓縮技術(shù)MVR(MechanicalVaporRecompression)，另一種則是蒸汽熱力再壓縮技術(shù)TVR(ThermalVapourRecompression)。TVR蒸發(fā)器此蒸發(fā)器系統(tǒng)相對(duì)于直排放二次蒸汽的系統(tǒng)來(lái)說(shuō)有所改進(jìn)，它利用暗射式熱泵來(lái)回收部分二次蒸汽，由干噴射式熱泵1ka高壓菜汽只能引射0.3kg的二次蒸汽，因此雖然此系統(tǒng)結(jié)構(gòu)簡(jiǎn)單緊湊，但是能效比較低。熱泵蒸發(fā)常用的形式大體上有上文所述的噴射式熱泵蒸發(fā)(TVR)和直接壓縮二次蒸汽機(jī)械壓縮式熱泵蒸發(fā)(MVR)，近年來(lái)，由于工程材質(zhì)、結(jié)構(gòu)及制造技術(shù)的顯著進(jìn)步以及能源價(jià)格的上漲，機(jī)械壓縮式熱泵已越來(lái)越為人們所重視。熱泵廣泛用于各種稀溶液的蒸發(fā)濃縮，在實(shí)際的工業(yè)生產(chǎn)中，使用熱泵蒸發(fā)技術(shù)已經(jīng)被證明有很好的經(jīng)濟(jì)性。熱泵裝置只需消耗少量的高質(zhì)能量就能得到比較多的熱能，減少了能源的浪費(fèi)。在大多數(shù)應(yīng)用中，熱泵蒸發(fā)的能量消耗比單效或多效蒸發(fā)的低得多，并且熱泵技術(shù)的采用可以取代大量的鍋爐房，節(jié)省燃料、減少大氣的污染、余熱得到利用的同時(shí)也減少了熱污染，因而使城市的環(huán)境衛(wèi)生必然得到改善，也有利于生態(tài)平衡。熱泵蒸發(fā)是一種低能耗的十分可靠的蒸發(fā)方法，由于節(jié)能和穩(wěn)定已經(jīng)在化工過(guò)程中取得了廣泛的應(yīng)用。

The jet pump has no moving partsso it is not easy to wear, and the reliability of operation is guaranteed to the maximum extent The steam consumption saved by using one jet pump is equivalent to adding an additional one-effect evaporator. The evaporation process with jet pump can effectively reduce the ineffective evaporation and save the cooling water consumption of the system. In addition to TVRMVR is a new evaporation technology that has developed rapidly in the chemica industry recently.ts basic principle is to increase the pressure and temperature of the secondary steam with a compressor or high-pressure steam, and then send it back to the heating chamber of the original evaporator to beused as heating steam. or use the secondary steam as a low-temperature heat source to recover part of the residual heat.There are two common methods to improve the pressure and temperature of secondary steam, one is mechanical vapor recompression (MVR) and the other is thermal vapor recompression(TVR).TVR evaporator Compared with the system of directly discharging secondary steam, this evaporator system is improved.It uses jet heat pump to recover part of secondary steam. Because 1kg of high-pressure steam of jet heat pump can only inject 0.3kg of secondary steam, although the structure of this system is simple and compact, its energy efficiencyisrelatively low. Generally, the commonly used forms of heat pump evaporation are jet heat pump evaporation(TVR) and direct compression secondary steam mechanical compression heat pump evaporation(MVR).In recent years. due to the remarkable progress of enaineering materias, structure and manutacturing technoloay and the rising enerayprice.mechanicacompression heat pump solutions, In actual industrial production,the use of heat pump evaporation technology has been proved to be very economical, has aftracted more and more aftention. Heat pump is widelyused in the evaporation and concentration of various dilute The heat pump device can get more heat energy only by consuming a small amount of high-quality energy. which reduces the waste of eneray In most applications.the eneray consumption of heat pump evaporation is much lower than that of single-effect evaporation or multi-effect evaporation and the adoption of heat pump technology can replace a large number of boiler rooms. saving fuel,reducing atmospheric pollution. and reducing heat pollution while using waste heat. thus improving the environmental sanitation of cities and benefiting the ecological balance.Heat pump evaporation is a very reliable evaporation method with low energy consumption, which has been widely used in chemical process because of its energy saving and stability.