太阳池型钾石盐热溶槽底层溶液提取和补充实验  

Extraction and replenishment tests of bottom solution ofsolar pond type potash salt thermal solution tank

作　　者：汤毅慧 赵启文[1] 屠兰英[1] 陈得清 赵榕 TANG Yihui;ZHAO Qiwen;TU Lanying;CHEN Deqing;ZHAO Rong(School of Chemical Engineering,Qinghai University,Xining 810016,China)

机构地区：[1]青海大学化工学院,青海西宁810016

出　　处：《大连理工大学学报》2023年第3期241-247,共7页Journal of Dalian University of Technology

基　　金：国家自然科学基金资助项目(2166060069)。

摘　　要：太阳池型钾石盐热溶槽运行稳定后,采取合理方法提取和补充溶液是其实际应用的重要环节,影响其运行效率的主要因素为单次取补液量、取补液速率和补液管位置.为探索取补液最优方法,通过实验考察了单次取补液量、取补液速率和补液管位置对太阳池型钾石盐热溶槽性能的影响.结果表明:太阳池型钾石盐热溶槽运行至第6 d时其密度、盐度与温度处于稳定状态,在15℃左右室温下运行稳定后其最高温度达到36.7℃;单次取补液量越大、取补液速率越快,热溶槽底层溶液温度下降越多,恢复时间越长,对盐梯度层的破坏也越明显.实验得出取补液最优方法:连续操作单次取补液量1 000 mL,间歇操作单次取补液量2 000 mL;取液管位置在热溶槽底部,补液管位置在距热溶槽底部150 mm处;取补液速率1.243 mL/s,太阳池型钾石盐热溶槽能够稳定运行,且单位时间内取补液量较大.After the operation of the solar pond type potash salt thermal solution tank is stable, taking a reasonable method to extract and replenish the solution is an important part of its practical application. The main factors influencing the operation efficiency are the single amount of solution extracted and replenished, the rate at which the solution is extracted and replenished and the location of the replenishment tube. To explore the optimum method of extracting and replenishing the solution, the effects of the single amount and the rate of extraction and replenishment of solution and the location of the replenishment tube on the performance of the solar pond type potash salt thermal solution tank are investigated. The results show that the density, salinity and temperature of the solar pond type potash salt thermal solution tank are in a stable state by the sixth day of operation, with a maximum temperature of 36. 7 ℃ after stabilization at room temperature of around 15 ℃. The larger the single amount and the faster the rate of extraction and replenishment of solution are, the more the temperature of the bottom layer of the thermal solution tank drops, the longer the recovery time and the more obvious the damage to the salt gradient layer are. The optimum method for the extraction and replenishment of solution is: the single amount of extraction and replenishment of solution is 1 000 mL for continuous operation and 2 000 mL for intermittent operation;the extraction tube is positioned at the bottom of the thermal solution tank and the replenishment tube is positioned at 150 mm to the bottom;the rate of extraction and replenishment of solution is 1.243 mL/s, the solar pond type potash salt thermal solution tank can operate stably and the extraction and replenishment volume per unit time is higher.

关 键 词：太阳池 钾石盐 热溶槽 

分 类 号：TQ021.8[化学工程]