中国能源建设集团广东省电力设计研究院有限公司,广州 510663;中国科学院广州能源研究所,广州 510610
根据谱尼-脱硫废水水质分析, 电厂脱硫废水中盐的主要种类为含Na+、 Mg2+的氯盐, 主要不溶物为CaCO3。 利用AspenPlus软件对低温低压脱硫废水的蒸发特性进行数值模拟, 结果显示, 脱硫废水的泡点温度随着溶液含盐量的增大而升高;在相同的泡点温度下, NaCl溶液的质量分数要大于MgCl2溶液以及两者的混合盐溶液的质量分数; 随着溶液含盐量的增大, 沸点升高值呈逐渐上升趋势; 随着温度的升高, 蒸汽压呈逐渐上升趋势; 而随着溶液中盐浓度的升高蒸汽压呈下降趋势, 均小于纯水蒸汽压, 且温度越高与纯水在相应温度下的蒸汽压相差越多。 数值模拟结果和文献中试验数据进行对比, 结果显示, NaCl溶液模拟值与文献值基本相符, MgCl2和NaCl混合盐溶液蒸汽压模拟计算值曲线在从文献中查找到的纯MgCl2和纯NaCl溶液的曲线之间,证明此模拟方法拟合程度较高,可为实际应用提供指导。
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基本信息:
DOI:10.19929/j.cnki.nmgdljs.2024.0045
中图分类号:
引用信息:
[1]罗浩东1,曾涛2.低温低压脱硫废水蒸发物性模拟研究[J].内蒙古电力技术,2024,42(03):89-93.DOI:10.19929/j.cnki.nmgdljs.2024.0045.
基金信息:
中国能源建设集团广东省电力设计研究院有限公司科技项目“污废水热力闪蒸工艺的核心技术研发”(EV05171W)