海水循环冷却系统排放水浓缩规律及制盐研究  

The Crystallization Rule of Salts in the Brine from Seawater Circulating Cooling System

作　　者：焦春联[1,2] 成国辰[1] 徐旭[1] 吴东霞[1] 吴芸芳[1] 尹建华[1] 侯纯扬[3,2] 

机构地区：[1]国家海洋局天津海水淡化与综合利用研究所,天津300192 [2]中国海洋大学化学化工学院,山东青岛266100 [3]国家海洋技术中心,天津300111

出　　处：《盐业与化工》2013年第2期33-36,共4页Jounral of Salt and Chemical Industry

基　　金：海洋公益性行业科研专项(201005023);中央级公益性行业科研院所基本科研业务费专项基金项目(K-JBYWF-2009-G12)

摘　　要：文章研究了海水循环冷却系统排放浓海水在室内自然蒸发过程中,CaSO4、NaCl的析出规律、主要离子的浓度变化规律以及日晒盐的化学组成和毒性。试验结果表明:海水循环冷却系统排放浓海水的CaSO4析出点为13.89°Be',NaCl析出点为25.76°Be',此时CaSO4的析出率为90.32%;实验制得的日晒盐化学组成符合制盐业一级品标准,并属实际无毒。因此,利用海水循环冷却系统排放浓海水制盐切实可行。Based on natural evaporation and condensation experiments, the crystallization rule of salts in the brine from circulating cooling system is studied. The results show that when the concentration of the brine reaches 13. 89 °Be＇, the crystal of calcium sulfate begins to form. When the concentration of the brine reaches 25. 76 °Be＇, the crystal of sodium chloride begins to form and the separation rate of calcium sulfate is about 90.32% ; The produced solar salt by experiment accords with first - grade standards for salt. Toxicity study shows that solar salt is non - toxic. All the results indicate that the brine from the seawater circulating cooling system can be used to produce solar salt.

关 键 词：浓海水 自然蒸发 制盐 海水循环冷却系统 

分 类 号：P746[天文地球—海洋科学]