Views: 255 Author: Site Editor Publish Time: 2025-06-11 Origin: Site
An acid fume scrubber is an environmental protection device used to treat acidic exhaust gases generated during industrial production. Its working principle is based on a combination of physical, chemical, and biological processes, achieving efficient purification of acidic gases through multiple steps.
Pre-treatment: The exhaust gas is conditioned by adjusting humidity and flow rate to create optimal conditions for the subsequent purification process.
Washing and Absorption: After entering the tower, the exhaust gas comes into countercurrent contact with an alkaline scrubbing solution (such as sodium hydroxide) sprayed from the top. A packed bed within the tower provides a large surface area to enhance the contact. Acidic components in the gas (e.g., sulfuric acid, hydrochloric acid) are absorbed and neutralized by the alkaline solution, forming harmless salts.
Neutralization and Final Treatment: The gas then passes through a demisting section to remove entrained liquid droplets. The final cleaned gas is discharged in accordance with environmental standards.
The core advantage of the acid fume scrubber lies in its high purification efficiency—up to 95% or more. It is typically constructed using corrosion-resistant materials such as stainless steel or fiberglass-reinforced plastic (FRP), ensuring long-term and stable performance even under harsh operating conditions.
