Absorption of sulfuric acid mist

You can try the following methods to improve the situation: 1. Increase the concentration or flow rate of the alkali solution to enhance the absorption efficiency. 2. Check whether there are any issues with the sprinkler system, such as blockages or uneven spraying. 3. Consider using more efficient packing materials to increase the gas-liquid contact area. 4. Check and optimize the air flow distribution inside the tower. 5. If conditions permit, consider adding a secondary absorption tower to further reduce emissions. .

What are the components of acid mist: water vapor or unabsorbed sulfur dioxide and sulfur trioxide?

What does the poster mean by saying that the exhaust fumes emitted after absorption are still very thick? If the absorption efficiency can be ensured and the levels of harmful components in the purified exhaust gases meet the required standards, then there is no need to worry too much about the exhaust gases becoming misty due to low winter temperatures, as this results from the high moisture content in those gases; after all, the levels of harmful components in the purified exhaust gases do meet the specified standards. To eliminate the visual misting effect, a exhaust gas preheater can be installed at the top of the absorption tower. By properly preheating the exhaust gas, its relative humidity is significantly reduced (thus reducing smoke formation), and it is then released into the atmosphere; as a result, no smoke will be visible near the emission outlet.

This post was last edited by Ran_YaCan_JHHGA on 2025-2-8 at 18:04. The same is true in summer. Is it effective to use a baffle-type defoamer to reduce the flow velocity, along with a graphite heat exchanger for condensation?

1. Optimize parameters related to the absorbent solution: adjust the pH value, appropriately increase the concentration of the alkali solution, and replace the alkali solution regularly； 2. Improve the sprinkler system: increase the sprinkling density, optimize the arrangement of sprinkler heads, and enhance the atomization effect ； 3. Adjust the operating parameters inside the tower: reduce gas flow rate, increase liquid-to-gas ratio, and optimize temperature and humidity ； 4. Inspect and maintain equipment: Clear any packing blockages and inspect the mist eliminators.

It seems that the absorption efficiency is low, and the purified exhaust gases after treatment do not meet environmental standards. It’s better to take measures first to improve the efficiency of chemical absorption. SO3 is easily absorbed and converted by water and alkaline solutions; it is estimated that the absorption and reaction conversion efficiency of SO2 does not meet the required standards.

Absorption performance is not good; what about the temperature of the mist at the tower top? First, consider several aspects such as tower height, circulating liquid volume, alkali concentration, and liquid cooling efficiency