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首页> 外文期刊>E3S Web of Conferences >Investigation of the components nature and concentration influence on carbon dioxide equilibrium in the system CaCl 2-Na 2CO 3-NaOH-H 2O by potentiometric titration
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Investigation of the components nature and concentration influence on carbon dioxide equilibrium in the system CaCl 2-Na 2CO 3-NaOH-H 2O by potentiometric titration

机译：系统CaCl 2 2 Co 3 -NaOH-H 3 -NaOH-H 3 -NAOH-H 3 -NAOH-H 通过电位滴定2 o

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The modern thermal power plants equipment requires strict deposits control on the surfaces. Such deposits are formed from impurities entering the cycle with water, the amount of which has significantly increased at modern powerful thermal power plants. At the modern level of the coolant water treatment, it is possible to exclude most of the impurities responsible for salt deposition. Analysis of various types of the sediments has shown that carbonate deposits are an integral part of them. Modern research methods (potentiometric titration in combination with methods of mathematical modelling) for carbonate, silicate, phosphate water systems have shown the existence of phase-unstable states leading to salt deposition during the coolant circulation. In this article, the carbonate system CaCl_(2)-Na_(2)CO_(3)-NaOH-H_(2)O was studied by potentiometric titration with a glass indicator electrode. The influence of the components nature (Li_(2)CO_(3), Na_(2)CO_(3), Ca_(2)CO_(3), LiOH, NaOH, KOH, CaCl_(2), MgCl_(2)) and the conditions for the existence of phase-unstable systems with varying concentrations of these components were studied. It is known that organic phosphonates are effective inhibitors of deposits in the carbonate system. In this paper, the action of two compounds of the specified class is considered. The concentration limits of their inhibitory action have been determined.
机译：现代火力发电厂设备需要严格的沉积物控制表面。这种沉积物由进入循环的杂质与水进入杂质，其量在现代强大的热发电厂中显着增加。在冷却剂水处理的现代水平，可以排除负责盐沉积的大部分杂质。对各种类型的沉积物的分析表明，碳酸盐沉积物是它们的组成部分。现代研究方法（电位滴定与数学建模方法组合）用于碳酸盐，硅酸盐，磷酸盐水系统表明存在在冷却剂循环期间导致盐沉积的相位不稳定状态。在本文中，通过用玻璃指示器电极电位滴定研究碳酸盐体系CaCl_（2）-NA_（2）CO_（3）-NAOH-H_（2）O。组件性质的影响（Li_（2）CO_（3），NA_（2）CO_（3），CA_（2）CO_（3），LIOH，NaOH，KOH，CACL_（2），MGCL_（2））研究了具有不同浓度的这些组分的相位不稳定系统存在的条件。已知有机膦酸盐是碳酸盐体系中沉积物的有效抑制剂。在本文中，考虑了两种规定类化合物的作用。已经确定了其抑制作用的浓度限制。

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