How to deal with the large amount of white mist generated by exhaust gas spraying
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Since the exhaust gas is at a temperature of 50-60 degrees, water spray is used to treat it, which results in the formation of a large amount of white mist. Is there any effective way to deal with this white mist? Visually, it is not possible to see the mist drifting away
Is white mist water vapor or matter? If it is water vapor, an additional heat exchanger is added to cool the working fluid. If it is material entrainment, add a mist catcher at the top of the spray tower. And it is necessary to check whether the gas velocity in the empty spray tower is appropriate.
It can only be solved by installing an efficient demister. Since they are submicron droplets formed by condensation, conventional baffle mist eliminators or four-way mist eliminators are not very effective.
I’ve just entered this industry; I’m here to learn more. I’ll be coming around here often in the future to keep improving my knowledge*
1. Increase the height of the spray tower, or add an exhaust gas absorption tower in series； 2. The exhaust gas is pre-cooled before being fed into the spray tower. 3. More spray nozzles are added to increase the amount of spraying…… If it’s caused by temperature, then lowering the temperature should resolve the issue ； It’s a different matter if other gases are produced as a result of the reaction between other materials that may be present in the material being absorbed and water.
The white mist that appears in exhaust gas treatment spray towers is caused by a large amount of water vapor; the water droplets in this vapor give rise to the white mist. The standard approach for exhaust gas treatment is to install an electrostatic demisting device behind the spray tower, which can effectively eliminate this phenomenon. This method is now used in the treatment of exhaust gases from rotary kilns