提高浓盐水蒸发效率的试验

An Experiment on Evaporation Efficiency Improvement of Concentrated Saltwater

摘要: 某些化工项目运行过程中产生的高浓度盐水一般是通过蒸发塘来进行处理和回收利用，但是该工艺具有占地面积大、蒸发效率低等缺点。针对这些不足，本文根据晾晒衣物的原理，通过将传统平面布局的蒸发塘更改为竖立布置来进一步提升蒸发塘的处理效率。即在蒸发池上方竖直放置强吸水性的材料，这些材料定时与蒸发池内的浓盐水接触，充分浸润饱和后晾晒在蒸发池上方，以此来增大水面与空气接触的表面积，并最终达到提升蒸发效率的目的。进一步的对比试验表明：在相同面积内，竖置的吸水性材料越多，蒸发效率越高；而增加浸润频率对蒸发效率的提升有限。本文提出的蒸发塘工艺改进方案相对于传统工艺具有建设简单、运行费用低、蒸发效率高等优点，具有广泛的应用前景。

Abstract: The high concentration of brine produced during the operation of chemical projects is generally processed and recycled through the evaporation pond, but the evaporation pond has the short-comings of large area and low evaporation efficiency. In this paper, according to the theory of hanging clothes to dry, the evaporation pond was changed from traditional flat layout to erect layout to enhance the efficiency of the pond. That is, the water-absorption materials were placed on the evaporation pool; these materials regularly contacted with the salt water in the evapora-tion pool, then dangled above the evaporation pool for drying after the salt water in materials was saturated, in order to increase the water surface’s contact with air, and eventually enhance the evaporation efficiency of the evaporation pond. Comparison experiments showed that the more the water-absorption materials are, the higher evaporation efficiency is in the same evaporation pond areas, and the increase of the infiltration frequency was limited to improve the evaporation efficiency. The improvement scheme of the evaporation pond proposed in this paper has the advantages of simple construction, low operating cost and high evaporation efficiency, and has widely application prospect.