The moisture level at the fan outlet is high, allowing condensate acid to be drained out (about 4 kilograms is drained each time after shutdown)
Thread Content
The moisture content at the fan outlet is relatively high, reaching 0.3 g/NM3, with an average of 0.2 g/NM3. Parking the fan will result in approximately 4 kg of condensed acid being discharged from its outlet. Could you please advise which issues might cause this? What are some good ways to solve this (keep the acid concentration at a normal level of 95%)? There is no air leakage at the fan inlet.
This is brought about by the gas-liquid equilibrium; it’s normal evaporation, and there’s no way to address it
It is best to check against the process requirements and parameters to see if high suction pressure or flow rate is the cause.
Acid present at the fan outlet can cause corrosion to the fan; it is recommended that you check the uniformity of the acid distribution, as well as whether there has been an increase in the resistance of the tower
This post was last edited by guisheng9hzh on 2019-2-21 at 16:11. What is the inlet temperature of the drying tower? The higher the temperature, the higher the water vapor partial pressure, and thus the amount of water carried will be greater. It’s best to keep the temperature below 38 degrees. Here, we control the water content to be less than 0.1 g/NM3; more water leads to more acid mist as well as more condensed acid
Hello, sir. Our company has been specializing in the production and installation of packing materials for many years. We currently offer S-shaped, structured packing that helps reduce pressure drop and energy consumption, thereby increasing production by around 5%
You’d better stop the machine for maintenance and check the wire mesh demister – see if there are any damages to the stones, whether the design of the wire mesh is appropriate, and whether the seal between the wire mesh and the tower wall is secure； Check again whether the seal between the screens is tight
Condensed acid is discharged from the fan outlet; in other words, the flue gas exits containing acid droplets. It is necessary to shut down the equipment to check the metal mesh filters for any gaps or holes. If everything is normal, then the acid separation device should be inspected for blockages or an increase in its pore size. Finally, it is important to check whether there have been any changes in the process, such as an increase in flue gas temperature due to higher production rates or increased gas flow.