新型CACE法测氢电导率关键技术的研究与应用

Research and Application of New CACE Method Measuring Hydrogen Conductivity Key Technology

传统阳树脂法测氢电导率存在一系列弊端,如在线监测数据不稳定,树脂易失效、再生度低,再生药品危害大及日常维护繁琐等。新型阳离子交换后的电导率(conductivity after cation exchanger,CACE)技术可实现连续同步在线监测多项指标,无失效再生问题,具有运行使用后不需维护的特点。某联合循环机组余热锅炉给水高pH值运行,氢交换柱失效频繁,水汽氢电导率监测情况欠佳。以此为研究对象,使用阳树脂法和CACE法相结合,通过离子色谱、原子吸收等手段对水样连续跟踪检测,CACE法技术优势明显,显著提高了水汽在线监测数据的可靠性和稳定性,为电厂解决此类问题提供了一定参考。

The traditional method of measuring hydrogen conductivity of water samples has a series of disadvantages,such as the unstable online monitoring data,the failure of the cation resin,the low regeneration degree,the harm of regenerated drugs and the tedious routine maintenance.The new CACE method for measuring hydrogen conductivity can realize continuous and synchronous online monitoring of multiple indicators,without failure and regeneration problems,and basically zero maintenance in operation.A heat boiler of combined-cycle unit requires high pH feedwater operation.Large amount of ammonia addition leads to frequent failure of hydrogen exchange column,and poor monitoring of water vapor hydrogen conductivity rate.As the research object,the combination of the actinic resin method and CACE.Continuous tracking and detection of water samples by ion chromatography and atomic absorption,CACE technology has obvious advantages.The reliability and stability of water vapor monitoring data is improved,which provides some reference for power plant to solve such problems.