重要监测要求-中英对照
重要监测要求、方法和紧急跳闸系统
5.1重要检测要求——方法和采样点
为了the 电解槽顺利有效运行，关键在于提供以下参数测量表中的方法和采样点。
参数 单元槽 分框架 电解槽 电解车间
进料侧盐水样品 7
淡盐水样品 视觉颜色监控1
原碱液样品
出料侧碱液样品
进料侧盐水温度 8
淡盐水温度
原碱液温度 8
出料侧碱液温度
氯气样品
视觉颜色监控 1 （氢气和电流效率） （氢气和电流效率）
氢气样品 2 2
电压 3 （包括H型跳闸断路器） 4 （包括H型跳闸断路器）
电流
进料侧盐水流量 5 6 （包括L型跳闸断路器）
原碱液流量 5 6 （包括L型跳闸断路器）
氢气压强 （包括H型跳闸断路器）
氯气压强 （包括H型跳闸断路器）
压差
进料侧盐水储槽液位
阳极液储槽液位 （包括H型和HH型跳闸断路器）
阴极液储槽液位
添加后盐水储槽液位
添加后碱液储槽液位
进入氢气系统的氮气清洗流
进入氮气系统的空气（氮气）清洗流
进料侧盐水酸添加量 7
淡盐水酸碱值 7
注：
1. 视觉颜色监控只能过半透平FEP排水管。当电量提升至极化电流量时，颜色在单元槽中会从 色变为绿色/黄色，稍后会出现微孔，与此
同时，测得电压升高。
2. 需要进一步确认氢气系统净化的满意程度，电解车间采样点可能来自电解车间之外。
3. 基本要求在于，人工测量独立单元槽电压时需要分接点。附加的独立单元槽的自动电压监控不是强制性的，但在强烈建议之列，或者
也可选择使用自动检测单元槽组（最大值为5）。电压检测需要在电解槽因高电压跳闸后，做出诊断具体哪一个部分错误。同时，在开车时需要
探测微孔，高电压跳闸是强制性的，可以由独立单元槽电压检测中直接导致，或由系统比较两组10个或以下单元槽的电压中导致（见有关跳闸
的章节）。
4. 考虑使用零点检测器以显示电解槽DC系统中严重的接地故障。
5. 流量由检测员在开车前观测排出管道。
6. 在选购设备时，需要考虑接地要求和对磁力地区的敏感度。
7. 只适用于进料侧盐水酸化的电解车间中，每一台电解槽都需要不间断的对淡盐水的酸碱值进行监测，对于 酸化的电解车间，由人工检
测淡盐水的酸碱度。
8. 如果每一台电解槽都有专用的热交换器来控制原液温度，那么每一台及其都要对进料侧盐水和原碱液温度进行测量。如果使用共同热
交换器，那么仅对原共同溶剂的温度要求显示。
5.2基本紧急跳闸和连锁系统
关键在于，相应的跳闸和连锁系统的安装用于防止危险情况的发展，并对电解槽可能造成的损害，导致的不良的系统运行，防患于未然。这些
见于下文。
5. Essential Monitoring Requirements, Instrumentation and Emergency Trip Systems
5.1 Essential Monitoring Requirements – Instrumentation and Sample Points
For successful operation of the Electrolyser it is essential that provision is made in the form of instruments and sample points for measurement of the following parameters.
PARAMETER MODULE PACK ELECTROLYSER CELLROOM
Feed brine sample no no Yes 7 yes
Depleted brine sample no visual colour monitor 1 no yes yes
Feed caustic sample no no no yes
Exit caustic sample no no yes yes
Feed brine temperature no no yes 8 yes
Depleted brine temperature no no yes no
Feed caustic temperature no no yes 8 yes
Exit caustic temperature no no yes no
Chlorine gas sample no
visual colour monitor 1 no yes (for H2 and current efficiency) yes (for H2 and current efficiency)
Hydrogen gas sample no no yes 2 yes 2
Voltage yes 3 (inc H trip) no yes 4 (inc H trip) no
Current no no yes no
Feed brine flow no 5 no yes 6 (inc L trip) no
Feed caustic flow no 5 no yes 6 (inc L trip) no
Hydrogen pressure no no yes (inc H trip) yes
Chlorine pressure no no yes (inc H trip) yes
Differential pressure no no yes yes
Feed brine tank level NA NA NA yes
Anolyte tank level NA NA NA yes (inc H & HH trips)
Catholyte tank level NA NA NA yes
Brine top-up tank level NA NA NA yes
Caustic top-up tank level NA NA NA yes
Nitrogen purge flow to hydrogen system no no yes no
Air (or nitrogen) purge flow to chlorine system no no yes no
Acid addition flow to feed brine no no yes 7 no
pH of depleted brine no no yes 7 no
Notes
1. Visual colour monitoring only via translucent FEP outlet pipes. As power is raised from polarisation current, the colour change from colourless to green/yellow in a module with pinholes will occur later. This will coincide with a shift upwards in measured voltage.
2. Needed to confirm satisfactory purging of hydrogen system. Cellroom sample point may be outside cellroom.
3. Basic requirement is provision of tapping points for manual measurements of individual module voltages. Additional automatic voltage monitoring for individual modules is not mandatory but highly recommended. Alternatively automatic monitoring of groups of modules (maximum number 5) can be employed. Voltage monitoring is needed to diagnose which element is at fault after Electrolyser has been tripped on high voltage. Also needed at start up to detect pinholes. High module voltage trip is mandatory – can be taken directly from individual module voltage monitoring system or from systems comparing voltage in two blocks of 10 or less modules (see section on trips).
4. Consider use of a null-point detector to indicate serious earth faults in Electrolyser DC system.
5. Flows are checked by operator by observation of exit hoses prior to start up.
6. Need to consider earthing requirements, and sensitivity to magnetic fields in choosing instruments.
7. Only for cellrooms employing feed brine acidification – continuous pH monitoring of depleted brine is required for each Electrolyser. For non acidified cellrooms will employ manual sampling for depleted brine pH checks.
8. Feed brine and feed caustic temperature measurement is required for each electrolyser, if each has dedicated heat exchanger controlling feed temperatures. Where a common heat exchanger is used, temperature indication is only required on common liquor feeds.
5.2 Essential Emergency Trip and Interlock Systems
It is essential that certain trip and interlock systems are installed to prevent hazardous situations developing, and to prevent damage to Electrolysers, resulting in poor performance. These are listed below.
2014.8.21