海水冷却塔盐沉积特性分析  

Salt Deposition Characteristic of Seawater Cooling Tower

作　　者：张连强[1] 李雪[1] 李治洁 游春华[2] 杨宗甄[2] 尹建华[1] 

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]苏州热工研究院有限公司,江苏苏州215000

出　　处：《盐科学与化工》2017年第7期25-30,共6页Journal of Salt Science and Chemical Industry

基　　金：国家海洋局业务化项目(YWH-2012-01);中央级公益性科研院所基本科研业务费专项资金项目(K-JBYWF-2016-T5)

摘　　要：海水循环冷却技术是沿海地区节约淡水资源、降低海洋热污染的有效途径,在海水循环冷却技术的推广过程中,对于海水冷却塔飘滴造成的生态环境影响越来越受到用户的关注。目前此方向在国内鲜有研究,为此文章提出了一种数值模拟与现场监测相结合的新评价方法。选取海水冷却塔环境气象参数与设计参数作为特性参数,利用SACTI(Seasonal/Annual Cooling Tower Impact)模型模拟分析了沿海某电厂海水冷却塔的盐沉积分布,将模拟数据指导现场监测布点,采用湿式沉降法监测获得盐沉积分布,并与模拟结果进行对比。研究结果表明:数值模拟结果与现场监测结果吻合良好,盐沉积分布与风向风频密切相关,盐沉积率监测最大值为13.5 g/m^2·月,建议对海水冷却塔进行升级改造,提高飘滴控制水平,为海水循环冷却技术的推广应用提供了有力支撑。Though seawater circulating cooling technology is an effective technology to save fresh water and reduce ocean thermal pollution,there are few reports about the drift influence on environment. The method combined numerical simulation with field monitoring was proposed to solve the problem. The distribution of salt deposition was simulated by SACTI program using environmental meteorological parameter and design parameter of seawater cooling tower,and the field monitoring position were chosen based on the simulation result. Comparison between experiment and simulation was carried out,which showed a good agreement. The result showed that amount of salt deposition was closely related with the wind direction and frequency. The maximum value of salt deposition is 13. 5 g/m2 omonth which is much higher than the specified value. It is advised to upgrade and improve the seawater circulating cooling tower for the control of seawater drift. In the end,this method provided strong support for the application of seawater circulation cooling technology.

关 键 词：沉积物 预测 数值模拟 沉降 海水冷却塔 

分 类 号：X830[环境科学与工程—环境工程]