Reasons for acidity at the fan outlet
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Ladies and gentlemen: In the process of producing sulfuric acid, the fan located after the tower generates nicotinic acid; the filter at the inlet of the drying tower is equipped with a negative-pressure pipeline to draw in nicotinic acid and sulfur trioxide from the tank. Please discuss what factors might cause acid to be present at the fan’s outlet.
The SO3 from nicotinic acid only causes the sub-micron acid mist at the exit of the drying tower to exceed the specified levels; the acid carried by the fan is mainly due to the acid trapped on the mesh.
It is mainly the efficiency of the dryer tower mesh demister and the operating gas velocity.
It’s a listed company that doesn’t lack money; it can simply go ahead and install another set with a capacity of 1 million tons
Check if the moisture content of the dry air at the outlet of your dryer is above the limit Another point is the situation regarding the operation of the dryer demister when the machine is parked – whether there is corrosion
This post was last edited by infowang2006 on 2017-12-13 22:49. Have you used fiber mist eliminators? If so, check whether the liquid seal under the fiber demister is filled with acid
There might be a problem with the screen or the demister; check the acid level and gas flow rate as well