HCI Scrubber Module | Acid Gas Scrubber

HCl Scrubber Module

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The Anguil Acid Gas Scrubber neutralizes inorganic acids that exist in a process exhaust stream or are created during the oxidation of air pollutants.  The module can effectively scrub a variety of acids including Hydrogen Chloride (HCl),  Hydrogen Bromide (HBr), Hydrogen Fluoride (HF) and Sulfur Dioxide (SO2).

How the Scrubber Module Works

The acid containing stream is directed to the scrubber module where a recirculation pump injects large volumes of water into a quench section, inducing vapor flow through the scrubber. Water then quenches the hot vapor and absorbs a portion of the acid.  The gases exit the eductor and enter a countercurrent absorption column.  Recirculation solution is fed to the top of the absorption column through a nozzle.   The remaining acid vapors are absorbed into the solution while the gases pass through a mist eliminator before exiting the column.  Sodium hydroxide, or another caustic, is added to control the pH in the sump to the neutral range.


  • High temperature systems available for processes up to 1800 °F (982 °C)
  • pH control system automatically monitors the solution to a neutral solution, optimizing scrubbing efficiency
  • Conductivity controller regulates water discharge from the scrubber and ensures there is no salt buildup
  • Automatic liquid level controls monitor the liquid in the sump
  • Automatic fresh water make-up prevents water depletion
  • High temperature safety shutdown
  • Programmable Logic Controller (PLC) based controls with digital data recorder and remote telemetry.  Truly integrated control system with the oxidizer.
  • Variable Frequency Drive (VFD) allows for high volumetric turn-down during idle or low process conditions
  • Completely shop assembled, pre-wired and tested prior to shipment

Available Options:

  • Complete "turnkey" packages
  • Forced or induced draft arrangements
  • Diverse material of construction options depending on the acid and inlet temperature to the quench
  • Skid or remote mounted panels and enclosure rooms available for system controls
  • Custom designed options to meet space restrictions
  • Winterization packages
  • SO3 removal systems

The Anguil Acid Gas Scrubber Advantage:

  • 99.9+% Removal Rate Efficiency
  • Regulatory Compliance Guaranteed
  • Low pressure drop reduces electrical consumption
  • Competitive capital equipment cost
  • Rapid installation time on most systems
  • Small equipment footprint

Anguil's Cost Effective Design

The Acid Gas Scrubber Module is designed as part of Anguil's broad line of technologically advanced, yet user-friendly, air pollution control products. Anguil's experience includes over 35 years of Regenerative, Recuperative, Catalytic and Direct-Fired oxidizer manufacturing, ranging in size from 100 to 500,000 SCFM (150-800,000 Nm3/hr). These scrubbers are used in conjunction with Emission Concentrator Systems, Oxidizers, Soil Remediation Equipment and Ceramic Filter Systems for industrial processes. Each product line represents value-engineered systems with emphasis on cost minimization. All systems are designed for seamless integration into the process, optimal performance and trouble-free operation.

Optional Equipment and Operating Cost Reduction Strategies:

The Anguil philosophy is to provide innovative pollution control technology including engineering, equipment manufacturing, installation, startup and post-sale service. Other benefits to working with Anguil:

  • 24 Hour customer service and support
  • Multiple technology offerings ensure unbiased recommendations
  • Complete aftermarket sales department
  • Over 30 years of oxidizer manufacturing experience

Have a scrubber project?  Contact Anguil for equipment reccomendations, pricing and availability.