Precautions for restarting a diaphragm cell after a long period of shutdown
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This post was last edited by sunjl1981 on 2013-1-6 20:26. Happy New Year to everyone! Our company’s diaphragm cells (116 units, 55 KA current, type 30-III) have been shut down for about a month; they are set to be put back into operation the day after tomorrow. There are some issues we need to pay attention to – I would appreciate it if everyone could share their advice! # ， ， &
We later discussed several points to note: First, pay attention to the outlet for chlorine gas； II. Increase the frequency of hydrogen analysis in chlorine ； III. The current must increase rapidly, reaching 30,000 amperes within 3 minutes. Make the following preparations: 1. Measure the flow rate ； 2. Replace nozzle with a larger one ； 3. Replace with saline, using warm saline ； 4. Replace the hose, increase the amount of saline added to the tank, and prepare for intubation ； 5. Open and inspect the cells with extremely high saline flow rates and a red color ； 6. Add as much brine as possible at the end of each individual cell to ensure the pressure and flow rate of the brine entering that cell ； 7. Prepare an accident response plan.
The most important issue is safety; it is necessary to intensify hydrogen analysis and prepare several new tanks so that those with high hydrogen levels can be replaced at any time.
A month of parking isn’t that long. When driving a vehicle, it is necessary to be prepared for grouting; for those cases where the flow rate is high and the water level cannot keep up, it is also important to analyze the hydrogen content in the chlorine ； As mentioned on the 2nd floor, the current needs to increase rapidly, usually at 5000 A per minute ； Chlorine and hydrogen analysis in the main pipeline needs to be performed every 10 minutes; pay attention to safety ； Prepare 3 to 5 new slots and install them (fit the cathode boxes) for standby use. It’s generally normal; there are no issues.