The water in the chamber of the acetylene water ring pump is acidic
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This post was last edited by sunjl1981 on 2013-1-6 at 22:48. Please share your thoughts: in our facility, the circulating water in the chamber of the acetylene water ring pump becomes abnormally acidic on a regular basis, and this problem is quite severe; it causes corrosion and damage to the pump. The system uses pressurized cleaning, with the waste sodium returning to the cooling tower and washing tower before the water ring pump. How can it be completely resolved? # ， ， &
It’s definitely because the effective chlorine content in your sodium hypochlorite is relatively high; the waste sodium hypochlorite oxidizes substances such as hydrogen sulfide carried by acetylene in the cooling towers and water scrubbers, resulting in the formation of acids. This leads to a high acidity level of acetylene, which in turn causes corrosion of the pumps. This post was last edited by edc1233 on 2008-5-29 22:00]
The alkali in the neutralization tower is added to the booster’s working fluid from time to time depending on the actual conditions, and the pH value of the booster is measured frequently. Make it alkaline >9. This post was last edited by OpticalMouse on 2008-4-16 14:52.]
Just measure the effective chlorine content of hypochlorite at the outlet of each tower and you’ll know
This is related to the sulfur and phosphorus content in calcium carbide
The water inside the machine is acidic; there are several possible explanations for this. 1\ The sodium hydroxide used is too active, and reactions between S and P occur during the previous processing steps as well as with acetylene. 2\ There is a problem with the connection at the compressor outlet to the purification tower, which causes the solution in the tower to flow back. This is just my personal opinion, for reference only. This post was last edited by edc1233 on 2008-5-29 at 21:56
It is related to the sulfur and phosphorus content in calcium carbide. Generally, pressure purification is used, with the water ring pump coming first; it’s mainly related to sulfur and phosphorus.
This problem occurs when defective sodium enters the cooling tower; by moving the cleaning process forward, you can apply anti-corrosion treatment to the impeller and end caps of the water ring pump
We have also encountered this phenomenon here, but after taking measures, the water ring pump no longer shows acidity. It is preliminarily assumed that the cause might be the acidic gases carried in by the defective sodium solution as it passes through the cooling tower, as well as the acidic gases present in the acetylene gas coming out of the generator. Due to the high temperature, these acidic gases enter the water ring pump via the gas outlet; after cooling, they turn into acidic liquid. We have now added an additional supply of cooling water at the top of the cooling tower, with the flow rate set at a low level, so that this water can cool the acetylene gas through spraying from the top. In this way, even if acidic gases are present, they are cooled down by the cooler system cooling water. Since the modification was made, there has been no occurrence of acidic substances in the water ring pump anymore.