MVR低放废液热泵蒸发系统设计及性能分析  

Design and Performance Analysis of MVR Low Level Liquid Waste Heat Pump Evaporation System

作　　者：鄢枭[1] 张生栋[1] 张昭 赵大鹏[1] 韩一丹 张志良 穆建波 Yan Xiao;Zhang Shengdong;Zhang Zhao;Zhao Dapeng;Han Yidan;Zhang Zhiiang;Mu Jianbo(China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《广东化工》2024年第11期98-101,共4页Guangdong Chemical Industry

摘　　要：为了研究MVR技术在低放废液中的可行性,构建了系统热力学数学模型,设计了MVR低放废液热泵蒸发系统工艺路线,并进行了AspenPlus模拟分析,根据模拟结果搭建了试验系统台架,分析了系统性能,研究了压缩机压比、蒸发温度、进料温度对系统蒸发量、传热效率的影响。结果表明:设计的MVR热泵蒸发系统连续运行稳定,系统平均蒸发量5.13t/h,每处理1吨模拟料液平均耗电量44.78 kW,净化系数达到1.02×10^(6),净化系数达到;蒸汽压缩机压比较低时有助于提高系统的节能效果,但系统蒸发量下降,会增加系统设备腐蚀的风险;系统蒸发量、制热系数受蒸发温度影响较大,随着蒸发温度的升高呈现上升趋势;随着料液温度的升高,系统中二次蒸汽将进料液加热至沸点所需要的热量降低,在增加系统蒸发量的同时降低了能耗。In order to study the feasibility of MVR technology in radioactive waste liquid,a thermodynamic mathematical model of the system was constructed,the process route of MVR low-emission waste liquid heat pump evaporation system was designed,and Aspen Plus simulation analysis was carried out.According to the simulation results,a test system bench was built and the system performance was analyzed.The influences of compressor pressure ratio,evaporation temperature and feed temperature on evaporation and heat transfer efficiency were studied.The results show that the designed MVR heat pump evaporation system runs continuously and stably,the average evaporation capacity of the system is 5.13 t/h,the average power consumption is 44.78 kW without processing 1 ton of simulated material liquid,the purification coefficient reaches 1.02×10^(6),and the purification coefficient reaches.When the steam compressor pressure ratio is low,it is helpful to improve the energy-saving effect of the system,but the decrease of evaporation will increase the risk of corrosion of the system equipment.The evaporation capacity and heating coefficient of the system are greatly affected by the evaporation temperature,and show an upward trend with the increase of evaporation temperature.With the increase of the feed liquid temperature,the heat required by the secondary steam in the system to heat the feed liquid to the boiling point is reduced,and the energy consumption is reduced while the evaporation of the system is increased.

关 键 词：低放废液 MVR 热泵 蒸发量 

分 类 号：TL352[核科学技术—核技术及应用]