内蒙古电力技术2024，Vol.42Issue(3)：89-93,5.DOI:10.19929/j.cnki.nmgdljs.2024.0045
低温低压脱硫废水蒸发物性模拟研究
Simulation Study on Evaporation Properties of Desulfurization Wastewater at Low Temperature and Low Pressure
摘要
Abstract
According to the analysis of the water quality of Puni desulfurization wastewater,the main types of salts in the desulfurization wastewater of power plants are chloride salts containing Na+and Mg2+,and the main insoluble substance is calcium carbonate.This paper uses Aspen Plus software to numerically simulate the evaporation characteristics of low-temperature and low-pressure desulfurization wastewater,calculates the effects of different concentrations of NaCl and NaCl MgCl2 solutions on boiling point rise at 0.1 MPa,as well as the effects of NaCl solutions on vapor pressure at different concentrations and temperatures.The numerical simulation results show that the bubble point temperature of desulfurization wastewater increases with the increase of salt content.At the same bubble point temperature,the mass fraction of NaCl is greater than that of MgCl2 and their mixed salt solution.As the salt mass fraction increases,the boiling point increases gradually.As the temperature increases,the vapor pressure gradually increases.With the increase of salt concentration in the solution,the vapor pressure shows a downward trend,which is lower than the vapor pressure of pure water,and the higher the temperature,the more the difference between the vapor pressure value of pure water at the corresponding temperature is.The numerical simulation results are compared with the experimental data in the literature,and the results shows that the simulated values of NaCl solution are basically consistent with the literature values.The simulated values of MgCl2 and NaCl mixed salt solution are between the two literature values,proving that this simulation method has a high degree of fitting and can provide guidance for practical applications.关键词
脱硫废水/低温低压/蒸发物性/Aspen Plus软件模拟/泡点温度/蒸汽压Key words
desulfurization wastewater/low temperature and low pressure/evaporation properties/Aspen Plus simulation/bubble point temperature/vapor pressure分类
动力与电气工程引用本文复制引用
罗浩东,曾涛..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(3):89-93,5.基金项目
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) （EV05171W）
