重要監(jiān)測要求-中英對照

重要監(jiān)測要求、方法和緊急跳閘系統(tǒng)  
5.1重要檢測要求——方法和采樣點
為了the 電解槽順利有效運行，關鍵在于提供以下參數(shù)測量表中的方法和采樣點。

參數(shù) 單元槽 分框架 電解槽 電解車間
    
進料側鹽水樣品      7 
淡鹽水樣品                                 視覺顏色監(jiān)控1    
原堿液樣品       
出料側堿液樣品      
    
進料側鹽水溫度      8 
淡鹽水溫度       
原堿液溫度     8 
出料側堿液溫度      
    
氯氣樣品  
視覺顏色監(jiān)控 1     （氫氣和電流效率）  （氫氣和電流效率）
氫氣樣品      2  2
    
電壓  3 （包括H型跳閘斷路器）    4 （包括H型跳閘斷路器） 
電流      
    
進料側鹽水流量   5     6 （包括L型跳閘斷路器） 
原堿液流量   5            6 （包括L型跳閘斷路器） 
    
氫氣壓強      （包括H型跳閘斷路器） 
氯氣壓強      （包括H型跳閘斷路器） 
壓差      
    
進料側鹽水儲槽液位       
陽極液儲槽液位       （包括H型和HH型跳閘斷路器）
陰極液儲槽液位       
添加后鹽水儲槽液位       
添加后堿液儲槽液位       
    
進入氫氣系統(tǒng)的氮氣清洗流       
進入氮氣系統(tǒng)的空氣（氮氣）清洗流      
    
進料側鹽水酸添加量      7  
淡鹽水酸堿值      7 
 
注：

1. 視覺顏色監(jiān)控只能過半透平FEP排水管。當電量提升至極化電流量時，顏色在單元槽中會從 色變?yōu)榫G色/黃色，稍后會出現(xiàn)微孔，與此

同時，測得電壓升高。
2. 需要進一步確認氫氣系統(tǒng)凈化的滿意程度，電解車間采樣點可能來自電解車間之外。
3. 基本要求在于，人工測量獨立單元槽電壓時需要分接點。附加的獨立單元槽的自動電壓監(jiān)控不是強制性的，但在強烈建議之列，或者

也可選擇使用自動檢測單元槽組（最大值為5）。電壓檢測需要在電解槽因高電壓跳閘后，做出診斷具體哪一個部分錯誤。同時，在開車時需要

探測微孔，高電壓跳閘是強制性的，可以由獨立單元槽電壓檢測中直接導致，或由系統(tǒng)比較兩組10個或以下單元槽的電壓中導致（見有關跳閘

的章節(jié)）。
4. 考慮使用零點檢測器以顯示電解槽DC系統(tǒng)中嚴重的接地故障。
5. 流量由檢測員在開車前觀測排出管道。
6. 在選購設備時，需要考慮接地要求和對磁力地區(qū)的敏感度。
7. 只適用于進料側鹽水酸化的電解車間中，每一臺電解槽都需要不間斷的對淡鹽水的酸堿值進行監(jiān)測，對于 酸化的電解車間，由人工檢

測淡鹽水的酸堿度。
8. 如果每一臺電解槽都有專用的熱交換器來控制原液溫度，那么每一臺及其都要對進料側鹽水和原堿液溫度進行測量。如果使用共同熱

交換器，那么僅對原共同溶劑的溫度要求顯示。
5.2基本緊急跳閘和連鎖系統(tǒng)
關鍵在于，相應的跳閘和連鎖系統(tǒng)的安裝用于防止危險情況的發(fā)展，并對電解槽可能造成的損害，導致的不良的系統(tǒng)運行，防患于未然。這些

見于下文。
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