Three-Dimensional Deformation Tube MVR Evaporator for Cellulose Production End Zero Wastewater Discharge Project
The heat transfer performance of an evaporator significantly impacts on the investment and operation of a mechanical vapor recompression(MVR)system.The in-tube heat transfer and pressure drop performances of MVR evaporators differ significantly between those based on three-dimensional deformed tubes and straight circular tubes.The performance criterion correlation equation of the MVR evaporator with a 3D deformed tube considering the brine concentration correction was established,and a set of new evaporator was designed for the zero wastewater discharge project at the end of cellulose production.Application practice shows that,compared with the traditional straight circular tube MVR evaporator,the new MVR evaporator based on a three-dimensional deformed tube has significant material and energy saving benefits,which can still fully meet the actual needs of the project with a saving of 29％of the heat exchange area.During the on-site investigation,the power consumption of the compressor of the MVR system per ton of wastewater treated was between 18.81 and 23.78 kW·h,which reflected the high energy-efficiency technical characteristics of the new evaporator,and was of great value for application and promotion.
MVR evaporatorthree-dimensional deformed tubeheat transfer enhancementzero discharge of wastewatercellulose production
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万方数据
维普
