Efficient Sulfuric Acid Vapor Absorption with Wet Air Scrubbers

Sulfuric acid vapor is one of the main pollutants that occur during zinc production. Sulfuric acid vapors do not exist as vapors; instead, they manifest as a fine mist or aerosol in the workplace atmosphere due to their low vapor pressure and hygroscopic characteristics. The mist mainly originates from the electrolyte that consists of a solution of zinc sulfate and sulfuric acid. The bubbles that form on the surface of the solution release an acid mist after bursting.

Sulfuric acid is not only detrimental to zinc production but is also dangerous to human health. Sulfuric acid irritates the mucous epithelium of the respiratory system, causes irritation and inflammation in the upper respiratory tract, and abundant production of mucous in the bronchial tree. Exposure to sulfuric acid vapors is associated with an increased risk of laryngeal cancer. Therefore, pollution control during zinc production is essential to reduce sulfuric acid vapors concentrations.

Wet air scrubbing is one of the most effective ways of removing pollutants from the air. Most wet air scrubbers can work with both vapors and particulate matter. Scroiler™  – a new type of wet air scrubber – is already used in sulfuric acid vapors absorption at the zinc production plant in Kazakhstan. Scroiler™ has proven to be more effective than other types of wet air scrubbers, namely a venturi scrubber, with air treatment quality being 10% higher than that of the competitors.

To remove sulfuric acid vapors, both water and NaOH or KOH may be used:

  1. Water may be used in a situation where the level of sulphuric mist present in the air is low. Water is used to effectively scrub the air and remove dangerous sulfuric acid vapors.
  2. If the volume of acid vapors in the air is high, NaOH or KOH are used instead of water. This allows for a more effective way of neutralizing acid. The ability to reuse the cleaning solution is the most notable aspect of Scroiler™. NaOH or KOH solutions are used over and over until most of the solution becomes alkaline, in which case a fresh solution is added to the scrubber.

The ability to utilize both water and other chemical compounds provides zinc manufacturers with an effective way of air pollution control.

Scroiler™ produces the cleaning mist differently from other scrubber systems, which results in running costs that are much lower than for a common wet air scrubber. Scroiler™ is compact, eco-friendly, low-maintenance, and economical.

If you are looking for the best air treatment device to improve air quality, Redwood Technology offers a cutting-edge type of wet scrubber – a Multi-Vortex wet air scrubber.

Redwood technology is a fast-growing vendor of wet air scrubbers. The multi-vortex scrubber can remove gas emissions, dust, vapors, and other pollutants from a gas stream. It is an innovative technology created to save water that makes it more cost-efficient and differs from other types of scrubbers.  If you have any questions or would like to purchase a multi-vortex wet air scrubber, please contact us at info@rdwd.tech

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