高压静电场对火电厂循环冷却水阻垢效果及机理  

Scale inhibition effects and mechanism of high voltage electrostatic fields in thermal power plant circulating cooling water system

作　　者：安慧凤[1] 刘智安[1] 赵巨东[1] 张旭[1] 龙山[1] 赵婧[1] 夏添[1] 张欣[1] 

机构地区：[1]内蒙古工业大学能源与动力工程学院,呼和浩特010051

出　　处：《环境工程学报》2013年第11期4295-4299,共5页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(51068020);内蒙古高等学校科学研究基金(NJ10086)

摘　　要：利用双通道工业循环冷却水分析测试台和高压静电水处理器，对火电厂的冷却水进行阻垢效果和机理研究。结果表明，施加工作电压2．0～4．0kV时，平均阻垢率随电压的升高而增大，达到61．7％，以后随着电压的升高平均阻垢率呈下降趋势，在7．5kV电压作用下平均阻垢率43．4％。对垢样晶体的SEM扫描图片表明，经高压静电场处理前的水垢晶体以方解石型硬垢为主，处理后发生了晶型转化，转化为文石型软垢，有利于垢的去除。The scale inhibition effects and mechanism for thermal power plant coohng water were stuu,cu -： use of a two-channel industrial circulating cooling water test bench and a high voltage electrostatic water proces- sor. The results revealed that the average scale inhibition rate increases with the voltage increasing and the maxi- mum is up to 61.7% when working voltage ranges from 2.0 to 4.0 kV. Exceed 4.0 kV, the average scale inhi- bition rate decreases with the increase of voltage and is down to 43.4% when working voltage reaches 7.5 kV. From the SEM photographs of scale crystals, we can find that the crystal structure transforms from a hard calcite type to a soft aragonite type after the high voltage electronic field treatment so that tlae scale can be washed away easily instead of being deposited on the heat transfer surface.

关 键 词：高压静电场 循环冷却水 阻垢率 

分 类 号：X703[环境科学与工程—环境工程]