放射性废液蒸发器参数调试及试验分析

蒸发器是放射性废液蒸发系统中的关键换热设备,为保证蒸发器的稳定运行,在正式投运之前,须对蒸发器的参数进行冷调试和热调试,以验证设备的换热性能、处理废液能力及净化效率。在冷调试阶段,采用模拟信号输入法,主要验证蒸发器液位、温度、压力等工艺参数是否正常显示,报警、联锁功能是否正常。在热调试阶段,采用DCS控制及PID液位调节方法,进行蒸发器液位试验、综合参数的联锁控制试验。通过热调试的试验数据分析,结果表明:蒸发器运行稳定,液位稳定在工艺设定值上,满足工艺运行设计指标,保证了蒸发器设备的蒸汽品质和工艺安全。

Parameter Commissioning and Test Analysis of Radioactive Waste Liquid Evaporator

The evaporator equipment is the key heat exchange equipment in the evaporation system.In order to ensure the stable operation of the evaporator,before it is put into operation,the process parameters of the evaporator must be cold commissioning and thermal commissioning,to verify the heat transfer performance,waste capacity and purification efficiency of the equipment.In the cold commissioning phase,the analog signal input method is adopted to verify whether the process parameters such as evaporator liquid level,temperature and pressure are displayed normally,and whether the alarm and interlock functions are normal.In the thermal commissioning phase,the DCS control and PID liquid level adjustment method are used to conduct the evaporator liquid level test and the interlocking control test of the integrated parameters.Through the analysis of the test data of the thermal commissioning,the results show that the evaporator is stable,the liquid level is stable at the process setting value,Fulfilling process design specifications,ensuring the steam quality and process safety of the evaporator equipment.