Abstract:

In thermal power plants，it is important to determine carbonate in water accurately in water treatment,water analysis and scale salt and corrosion. But there isn't a method of determining carbonate in water directly. The alkalinity adjustment method of calculating every ingredient concentration of ca山onate species is used currently. The alkalinity adjustment method is complicated and not accurate. Based on the alkalinity adjustment method of calculating every ingredient concentration of carbonate species. The method of determining carbonate in water directly is presented and the process of determining carbonate in water is described in detail with natural water,boiler water and influent and effluent water of decarbonator in thermal power plants taken as examples.

Key words: carbonate, standard solution, titration method

摘要：

在火力发电厂中，准确测定水中碳酸盐对水处理、水质分析以及研究热力设备的结垢、积盐和腐蚀产生的原因都有十分重要的意义。但是,目前对水中碳酸盐还没有直接测定的方法，而是采用碱度校正法对水中碳酸盐物种各组分的浓度进行计算，不但计算繁琐，而且误差也大。在碱度校正法的基础上，提出了用硫酸或氢氧化钠标准溶液直接测定水中碳酸盐的方法，并以火力发电厂中的生水、锅炉水和除碳器进出口水为例，详细叙述了水中碳酸盐的测定过程。

关键词: 碳酸盐, 标准溶液, 滴定法

CLC Number: 

• TK223.5

• TU991.2