Exploration of the causes of foaming in circulating water in the refining industry
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What can cause excessive foaming in circulating water?
Excessive foam in circulating water is usually caused by organic matter in the water.
Generally, the addition of non-oxidizing bactericidal and algaecidal agents results in the formation of a large amount of foam, but it disappears on its own after two or three days of discontinuing its use； Furthermore, when the symbiotic bacteria and algae multiply in large numbers, bubbles of black oily substance appear ； Leakage of process media can also produce foam
It is most likely caused by the use of non-oxidizing algaecides, such as quaternary ammonium salts, which tend to produce foam easily； Second, whether there is oil leakage in the system ；
If there are no abnormalities in the system, it is mainly due to the use of fungicides
Agree with the view from the 3rd floor; if no non-oxidizing biocides are added, then there is a leak of process media. In the event of a leak in the process medium, it is possible to conduct inspections of the COD levels at the inlet and outlet of the heat exchanger to identify the source of the leak and take appropriate actions.
1. If an anti-oxidizing bactericide is added, too little defoamer may result in excessive foam. 2. Material leakage 3. A large accumulation of foaming microorganisms in the circulating water
Surfactant-based non-oxidizing bactericides, microorganisms, and high salt levels can all be the cause