刘峰均¹,董伟钢²,杨林军¹,赵宁³,冯永新³

• 1:能源热转换及其过程测控教育部重点实验室(东南大学)，江苏 南京 210096
• 2:绍兴市生态环境局柯桥分局，浙江绍兴 312000
• 3:广东电科院能源技术有限责任公司，广东广州 510080

摘要(Abstract)：

为了探讨脱硫废水蒸发过程中HCl的释放特性，对脱硫废水蒸发过程中析出的3种氯盐MgCl₂·6H₂O、CaCl₂·6H₂O、NaCl的晶体和溶液进行蒸发实验，采用实际脱硫废水探究蒸发温度、总可溶性固体（TDS）浓度、pH值、Cl^-浓度对脱硫废水蒸发过程中HCl释放特性的影响。结果表明，HCl的释放途径主要为溶液中H⁺与Cl^-结合以及氯盐结晶盐热分解。其中，MgCl₂·6H₂O晶体及MgCl₂溶液在蒸发过程中HCl析出占比最多。脱硫废水蒸发过程中降低蒸发温度、增大脱硫废水的TDS浓度、pH值可降低HCl的析出占比，添加的结晶盐种类以及蒸发温度的不同，Cl^-浓度的变化对HCl析出占比的影响也不同。

关键词(KeyWords)： 脱硫废水;蒸发;HCl析出;氯盐

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金（52076046）；中国南方电网有限责任公司科技项目（GDKJXM20183546）。

作者(Author): 刘峰均¹,董伟钢²,杨林军¹,赵宁³,冯永新³

DOI: 10.3969/j.issn.1003-9015.2021.04.021

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