Acid Scrubber Systems

Industrial processes often generate hazardous acidic gas emissions, which can pose a significant threat to the environment and workers’ health. Acid scrubber systems are a proven technology designed to capture and neutralize these harmful acids, ensuring cleaner air and a safer work environment.

MACH Engineering designs efficient acid gas scrubber systems to address specific client requirements, offering tailored solutions to enhance operational efficiency and safety.

HCL Scrubber
Compatible Acids and Efficiency

The effectiveness of an acid scrubber system depends on several factors, including the specific acid being targeted and the chosen scrubbing solution. Common acidic emissions that scrubber systems are typically used for include:

  • HCl: Highly soluble in water, HCl reacts readily with water-based scrubbing solutions, providing high-efficiency removal.
  • H2SO4: Sulfuric acid is another highly water-soluble acid that can be efficiently neutralized using sulfuric acid scrubbers with strong alkali solutions.
  • HNO3: Nitric acid scrubbers often use water-based scrubbing solutions to neutralize the acid from gaseous emissions.
  • H2S: H2S scrubber systems prevent the release of this toxic and odorous gas effectively.
  • NH3: Though not an acid, ammonia is a gas frequently managed in industrial settings. Ammonia stripping systems can be designed with scrubbing solutions that effectively neutralize ammonia, preventing its release into the environment. 
Efficiency Considerations

Several factors influence the overall efficiency of an acid scrubber system, such as:

  • Packing media: The type of tower packing media used within the scrubber tower plays a crucial role in maximizing gas-liquid contact while minimizing the pressure differential.
  • Liquid-to-gas ratio (L/G ratio): This ratio determines the amount of scrubbing solution used in relation to the volume of acidic gas being treated. A higher L/G ratio typically translates to higher removal efficiency but also increases operational costs.
  • pH control: Maintaining the optimal pH level and reagent concentration of the scrubbing solution is critical.
Available Tower Construction Materials

MACH Engineering provides a variety of construction materials for acid scrubber towers. Choosing the right material keeps the system from degrading, failing or even interacting with and releasing gases. The optimal material selection depends on the specific acid(s) being targeted, their concentration, temperature and other process factors. Options include:

  • Stainless steel
  • Polypropylene/polyethylene
  • PVC
  • CPVC
  • FRP

Acid scrubber systems are widely used in various industries to control and eliminate harmful acid emissions. Common applications include:

  • Chemical processing
  • Petrochemical industries
  • Power plants
  • Metal plating
  • Wastewater treatment
  • Food and beverage industry
  • Pulp and paper industry
Advantages And Disadvantages?

Acid scrubber systems come with numerous benefits, such as:

  • High effectiveness in capturing and neutralizing a wide range of acidic gasses
  • Customization opportunities to meet the unique needs of each application
  • Construction designed to withstand harsh chemicals and conditions
  • Protection from corrosive damage, leading to lower operational costs

There are also some drawbacks to using acid scrubber systems, including:

  • Ongoing maintenance and replacement of scrubbing solution.
  • Generating wastewater streams that need further treatment.
  • Requiring proper design and engineering for optimal performance.

Contact MACH Engineering Today for All Your Acid Scrubber System Requirements

Enhance your facilities’ operational safety and environmental compliance. MACH Engineering offers customized acid scrubber solutions tailored to specific needs. Contact our experts today to discover how our advanced scrubber systems can enhance your business’s operations.