Abnormal fluctuations in the brine flow rate of the electrolyzer
Thread Content
This post was last edited by sunjl1981 on 2013-1-6 at 23:54. The flow rate of brine entering Wood’s electrolyzer experiences abnormal fluctuations; the flow rate often increases or decreases suddenly by 1–3 m3/h over a period of about 20–30 seconds. This occurs more frequently at night, but it happens occasionally during the day as well. The other two cells do not exhibit this phenomenon, and the temperature and pressure of the electrolytic cells remain relatively stable as well. I wonder why? Please help analyze it. Thank you! # ， ， &
This kind of situation has also occurred in our company before; it might be caused by gas at the branch pipe entering the tank. Releasing the gas through the vent before the flow meter could possibly bring about changes.
1. Electromagnetic flowmeters are commonly used as the flow meters for brine inlet in Wood’s electrolyzers, and interference occurs； 2. As mentioned above, the pipeline is designed with an exhaust port that allows for exhaust operations: open the exhaust valve to its maximum position and then close it slowly ； 3. Are the automatic valves designed for use actually in operation? At present, we are using all manual ones ； 4. If the temperature of the electrolyte cell remains stable, it can be assumed that the flow rate actually does not fluctuate; any variation is merely due to interference from the flow meter ； 5. The pressure in the electrolytic cell cannot be relied on, as pressure control is not determined by the saltwater flow rate, but rather by the regulation of the chlorine-hydrogen main pipe ； 6. Adjust the high-level tank deliberately to see if there are indeed fluctuations.
Thank you to the two people above! The flow rates of our three electrolyzers are under automatic control, and the other two are very stable. YZHMS, I would like to ask—6. Adjust the high-level tank deliberately to see if there are indeed fluctuations. How exactly should this be done? This post was last edited by limingshuguang on 2007-12-17 11:37.]
1. Adjust the reflux from the high-level tank to zero, then observe to ensure stability. When the flow rate fluctuates, does there be any change in backflow? 2. When an anomaly occurred, we adjusted the positions of the flow meter and control valve, and added grounding rings to provide grounding. 3. As for the case of a sump, we have not tried it, but according to the original poster, sumps are generally not large, so such fluctuations allow it to be possible to detect changes in the liquid level of the sump. 4. If it is as the original poster mentioned, with such phenomena occurring in certain slots, could the process engineering team help identify the cause to check for any issues in the pipeline design? This post was last edited by yzhms on 2007-12-17 08:21]
The reason might be the presence of gas in the pipeline. In such a case, it is necessary to open the exhaust valve of the pipeline to release the gas――open the exhaust valve to its maximum position and then close it slowly； It can be done several times.
Then why is there gas? Where did it come from? Please help me analyze it, thank you!