燃煤电厂末端废水调质与干化技术研究及其工程示范

摘要

为了顺应燃煤电厂对废水零排放的需求,实现燃煤电厂末端废水合理处理,在分析梳理末端废水水质与现有零排放处理工艺的基础上,对燃煤电厂末端废水调质及干化技术进行了研究与探讨.研究了含盐雾滴的干燥过程及其影响因素,通过比选雾化方式和烟气分配方式,最终确定了以烟气旁路干化的方式来处理末端废水的技术,并进行了工程应用,完成了工程示范项目,并对其工程效果和运行经济性进行了评估.%In compliance with the requirement for zero wastewater discharge in coal-fired power plants, the quality control technology and drying technology of the terminal wastewater are studied and discussed in this paper in order to properly dispose the terminal wastewater based on the analysis of the wastewater quality and the existing wastewater zero discharge treatment technology. The drying process and its influencing factors of saline drip are researched. After the comparison of atomization and flue gas distribution, the technology of treating terminal wastewater by flue gas bypass drying is finally determined to be applied, and then corresponding engineering application is carried out, which is the first project demonstration project completed in China. Moreover, the engineering effect and operation economy are evaluated.