現場電解槽直流供電-中英對照

 電解工藝所需的直流電源由現場交流電源通過變壓器/整流器單元提供。連至三相電源的基礎單元將產生6伏脈沖直流電輸出。更加復雜的整流器單元能夠生成12伏和24伏的脈沖直流電輸出。

 直流輸出的脈沖導致直流電壓出現“波動”。可以通過增加脈沖的數目來減小波動大小。為了達到電解槽滿意的工作要求，直流電壓波動（通過電壓波動峰谷幅值進行測量）不應超過總電壓的5%。此限制要求適用于所有可能的正常工作條件，包括停車和設備使用壽命結束的情況。

在實際操作中，整流器的要求更易于受到其它因素的影響，例如，交流系統中的諧波和允許整流變壓器功率因數。
電解槽壓降
 
 供給分框架總管的鹽水和堿液必須具有足夠高的壓力，以克服電解槽和進口/出口分框架總管的摩擦壓力損失和靜壓力水頭影響。在各種流體條件下，從入口到分框架總管、從分框架出口總管（電解槽供給界區）到出口的聯合壓力損失都不能超過以下數值。

鹽水壓力損失  - 0.60 bar
堿液壓力損失  - 0.72 bar
電解槽吹掃用氣

對于吹掃電解槽的氫氣總管而言，壓縮氮氣是必不可少的。氮氣供給壓力必須至少為0.5 bar g。
 對于吹掃電解槽的氯氣總管而言，壓縮空氣（不含油）或氮氣是必不可少的。空氣或氮氣供給壓力必須至少為0.5 bar g。

如果在氯氣系統吹掃工作中使用氮氣，則必須將其與氫氣系統吹掃所使用的氮氣分離開來，這樣氫氣和氯氣將不會通過氮氣吹掃系統發生混合。
工作條件
正常工作條件

 下表（3.1）對BICHLORTM電解槽成功操作所需的正常穩態操作條件進行了比較說明。表中列出的數據應被理解為可以接受的正常工作范圍，具有建議的工作目標值（括號中的數據），可以實現電解槽的優化性能。以下所有數據都在生產商的擔保要求之內，但是會根據離子膜生產商的建議而發生變化。除另行說明外，以下條件以單個電解槽界區表示。

表 3.1 BICHLORTM離子膜電解槽工作應滿足的正常工作條件

 NAFION TM
電流密度
（kA/m2） 1.5 - 6
陽極液pH值
（23oC下的pH值） 2 - 11
1. 在新離子膜工作的最初48小時之內，為30 - 32%
2. 所有鹽水條件都適用于進入電解槽進料總管的鹽水物料。此物料將包括用于供給鹽水酸化的酸液。
停車條件和程序

表3.2中對停車條件進行了總結。表中列出的數據應被理解為可以接受的正常工作范圍，具有建議的工作目標值（括號中的數據）。除另行說明外，以下條件以單個電解槽界區表示。
Electrolytic cell DC power supply
Electrolytic process for dc power supply provided by the site ac power through the transformer/rectifier unit. Even to the basis of three-phase power supply unit will have a 6 volt dc pulse output. More sophisticated rectifier unit can generate the pulse dc 12 v and 24 v output.
Dc output pulse dc voltage will appear "volatility". Can increase the size to reduce the number of pulse wave. In order to meet the requirements of electrolyzer satisfied work, the dc voltage fluctuation (through the voltage fluctuation in peak amplitude measurement) should not exceed 5% of the total voltage. This restriction requirements apply to all possible normal working conditions, including parking and equipment service life of the end of the situation.
In practice, the requirement of the rectifier are more easily affected by other factors, for example, in the ac system harmonic and allow the power factor rectifier transformer.
The pressure drop of the electrolytic cell
Supply framework manager of saline and alkaline solutions must have a high enough pressure, in order to overcome the electrolyzer and import/export framework of main friction pressure loss and static pressure head. Under the condition of all kinds of fluid, from the entrance to the main framework, from export main framework supply battery (cell) to the export of pressure loss are no more than the following values.
Salt water pressure loss - 0.60 bar
Lye pressure loss - 0.72 bar
Electrolytic tank venting gas
For purging electrolytic tank of hydrogen manifold, compressed nitrogen is essential. Nitrogen supply pressure must be at least 0.5 bar g.
For purging chlorine director general of the electrolytic cell, compressed air (oil) or nitrogen is essential. Air or nitrogen supply pressure must be at least 0.5 bar g.
If in chlorine system used in the nitrogen purging work, it must be with the hydrogen system used by purging nitrogen separation, such hydrogen and chlorine gas mixture will not occur through the nitrogen purging system.
The working conditions
Normal working conditions
In the table below (3.1) needed for the successful operation of BICHLORTM cell normal steady state operating conditions were compared. The data listed in the table should be understood as an acceptable scope of work, has the work target (the data in parentheses), can achieve the optimal performance of cell. All of the following data is within the collateral requirements of producers, but will change on the advice of the ionic membrane manufacturers. Unless otherwise specified, the following condition expressed in a single cell battery.
Table 3.1 BICHLORTM ionic membrane electrolyzer work should meet the normal working conditions
NAFION TM
Current density
1.5 6 (kA/m2)
Anode liquid pH
23 oc (pH) under 2 to 11
1. Working in a new ionic membrane first within 48 hours, for 30-32%
2. All saline conditions apply to enter the cell feed brine material manifold. This material will include acid is used to supply brine acidification.
Parking requirements and procedures
 The parking conditions are summarized in table 3.2. The data listed in the table should be understood as an acceptable scope of work, has the work target (the data in parentheses). Unless otherwise specified, the following condition expressed in a single cell battery.

2014.9.2