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Analysis and Prediction of Corrosion of Refractory Materials by Sodium Salts during Waste Liquid Incineration—Thermodynamic Study

机译：废液焚烧热力学研究中钠盐耐火材料腐蚀的分析与预测

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Incineration of high-content sodium salt organic waste liquid will corrode the refractory material in the incinerator, causing the refractory material to peel off and be damaged. A thermodynamics method was used to study the thermodynamic properties of three common sodium salts (NaCl, Na2CO3 and Na2SO4) on the corrosion of refractory materials (MgO·Cr2O3, MgO·Al2O3, Al2O3, MgO and Cr2O3). The results determined that MgO has the best corrosion resistance and is not corroded by the three sodium salts. On this basis, the thermodynamic corrosion experiments of NaCl corrosion of magnesium oxide at three temperatures of 600, 1000 and 1200 °C were carried out. Analysis of the corrosion product by X-ray diffraction (XRD) showed no corrosion product formation. Studies have shown that thermodynamic calculation can accurately predict the thermodynamic mechanism of alkali metal corrosion to refractory materials, and MgO is a good anti-alkali metal corrosion refractory material.

机译：焚烧高含量钠盐有机废液将腐蚀焚烧炉中的耐火材料，导致耐火材料剥离并损坏。使用热力学方法研究三种常见的钠盐（NaCl，Na 2 CO 3和Na 2 SO 4）的热力学性质对耐火材料的腐蚀（MgO·Cr2O3，MgO·Al2O3，Al2O3，MgO和Cr2O3）的腐蚀。结果确定MgO具有最佳的耐腐蚀性，并且不会被三种钠盐腐蚀。在此基础上，进行了在600,1000和1200℃的三个温度下氧化镁的NaCl腐蚀的热力学腐蚀实验。通过X射线衍射（XRD）分析腐蚀产物（XRD）显示没有腐蚀产物形成。研究表明，热力学计算可以准确地预测碱金属腐蚀对耐火材料的热力学机制，MgO是良好的抗碱金属腐蚀耐火材料。

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期刊名称 Materials
作者
Guishi Cheng; Ying Zhao; Fei Long; Jiahe Zhang; Tengfei Zhao; Lu Liu; Xiaoqiang Wang; Changqing Dong;
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作者单位

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年(卷),期 2020(13),21
年度 2020
页码 4729
总页数 9
原文格式 PDF
正文语种
中图分类外科学;
关键词
sodium salt; refractory; corrosion; thermodynamics;

机译：钠盐;耐火;腐蚀;热力学;

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Analysis and Prediction of Corrosion of Refractory Materials by Sodium Salts during Waste Liquid Incineration—Thermodynamic Study

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