Thermal and catalytic oxidizers are designed around emission constituents, concentrations and temperature.  Occasionally the destruction requirements, efficiency needs and process parameters will dictate certain enhancements or supplementary equipment to meet objectives.  

Below you will find the various options to consider for your emission abatement equipment but here is what you can expect from every Anguil oxidizer solution:

  • Uniform velocity for proper temperature distribution and emission destruction
  • Gas trains designed to meet FM Global or any international certifications such as CSA, TSSA, EN, CGA and ATEX
  • Alternative heating options such as electric heating elements or hydrogen burners for low carbon solutions
  • Pre-assembly and factory testing for reduced installation costs
  • Robust Programmable Logic Controller (PLC) based controls with multiple safety shutdowns to ensure safe operation
  • Custom-designed to your application without custom built prices
  • Seamless integration with your current process and future expansion plans
  • Full equipment warranty and 24-hour service support
  • Regulatory compliance is guaranteed

Enhanced User Interface-Custom Controls Packages

Anguil’s advanced controls and automation systems provide the safest, most efficient, and highly reliable operation while integrating smoothly into existing plant operations. From new equipment to upgrades and retrofits, our systems utilize the latest in Programmable Logic Controller (PLC) based controls, touch screen interfaces, and remote telemetry.

Learn more about our controls and automation capabilities here.

Reduced Energy Consumption-Heat Recovery

Every energy demand is unique, as is every energy-efficiency improvement opportunity. At Anguil, our track record includes an ability to blend time-tested, standard products with innovative, custom engineered solutions. We design, manufacture, and install energy recovery systems that decrease your energy consumption, reduce operating costs and maximize return on investment.

Each system is custom engineered to address your energy needs with a solution based on your specific objectives. Our energy recovery and heat transfer offerings include:

  • Air-to-Air Heat Exchangers (Shell & Tube, Plate Type)
  • Air-to-Water Heat Exchangers (Economizers)
  • Air-to-Steam Heat Exchangers (Waste Heat Boilers)
  • Air-to-Fluid Heat Exchangers (Oil, Glycol Loop)
  • Energy Audits

The Anguil Advantage

What separates Anguil from the competition is our ability to take your energy recovery project from start to finish. This provides single source responsibility, allowing you to focus on your business.

The installation process is quite possibly the most important portion of the project. We take special precautions to prevent disruptions in your process and ensure a timely, quality installation. Our capabilities include but are not limited to:

  • Mechanical, Electric, and Gas Installation
  • Ductwork Design, Supply, and Erection
  • Exhaust Stack Modification
  • Controls Design, Supply, and Integration
  • System Integration Into Existing Processes
  • Turnkey Installation
  • System Startup

Explore More Energy Recovery Options

Emission Capture: Permanent Total Enclosures (PTE)

Permanent Total Enclosures (PTEs) provide numerous advantages for manufacturers who paint, spray, coat or apply solvent based materials to their product. The primary function is to provide 100% capture of all fugitive over-spray of harmful air pollutants used within the enclosure, maximizing the capture and control efficiency of the facility. This results in fewer uncontrolled emissions being released to the atmosphere and compliance with most government regulations for indoor air quality. The PTE also reduces routine capture efficiency testing costs and provides a cleaner, healthier work environment in the rest of the production facility through better capture and noise containment.

The Anguil Advantage

  • Anguil will work with operating personnel to review the PTE design to ensure there is no production related issues
  • Anguil’s experience with cascading floor sweeps and hoods that can contain high concentrations of VOC into dryers – ovens or burners allow for better air quality within the PTE
  • Enclosures can be placed around the wet-end of production equipment to keep the PTE small, or large enclosures around the entire production line if required
  • Good capture efficiency within the PTE will minimize the exhaust flow from the enclosure to a control device, decreasing the overall cost for compliance

How the PTE works

PTEs allow 100% capture efficiency of the process emissions, including all fugitive air pollutants within the PTE, if there is an enclosure or structure that completely surrounds the production device. To qualify as a PTE, the following criteria must be met:

  1. Any natural draft opening (NDO) shall be at least four equivalent diameters from each Volatile Organic Compound (VOC) emitting point.
  2. The total area of all NDOs shall not exceed five percent of the surface area of the enclosure’s four walls, floor and ceiling.
  3. The average facial velocity of air through all NDOs shall be at least 3,600 m/h (200 ft/min).  The direction of air through all NDOs shall be into the enclosure.
  4. All access doors and windows should be closed during routine process operation.
  5. All exhaust gases from the enclosure must be directed to a control device.


  • 100% capture efficiency providing the highest level of VOC control efficiency
  • Once PTE is certified or proven, subsequent capture efficiency testing is generally not required
  • Indoor air quality within the rest of the production facility is improved as all VOCs or solvents are captured and sent to an emission control device.
  • Noise levels within the rest of the facility can be improved
  • Additional production capacity can be provided before emission limits for a given facility are reached

Available Options

  • Automatic, fast-acting doors and conveyor openings can be provided to minimize the volume of PTE exhaust sent to a control device
  • Makeup air systems to provide outside fresh air to points where personnel are routinely present to enhance worker comfort
  • Automatic controls for the PTE exhaust fan speed or door positions based on production levels
  • PTEs can be installed around the process “wet end” where VOCs may be become fugitive or the entire process line could be enclosed within
  • Floor sweeps and capture hoods to pickup solvent emissions and deliver them to a dryer, oven or an emission control unit.  This enhances the air quality for operating personnel within the PTE
  • Inspection windows for ensuring product quality

Sticky Particulate Control: Self-Cleaning Ceramic Filters (SCCF)

The Anguil Self-Cleaning Ceramic Filter (SCCF) collects, volatilizes and destroys particulate and condensable organics emitted from industrial process streams. It can be used independently as a filter media on hot and cold process streams or coupled with an oxidation module for total odor, Volatile Organic Compound (VOC) and Hazardous Air Pollutant (HAP) control.

How the Self-Cleaning Ceramic Filter Works

The SCCF is designed based on exhaust airflow volume, type of contaminant and desired collection efficiency. During operation, the process stream, containing hot or cold particulate laden air, condensable organics or VOCs, is drawn into the Ceramic Filter. The process stream passes over a ceramic matrix selected based on particle size and collection efficiency considerations. The Ceramic Matrix is either periodically or continuously heated by a natural gas burner or by heat from an RTO hot side bypass, where any organics collected on the Ceramic Matrix are volatilized. Any non-organics collected on the Ceramic Matrix are converted to inorganic ash and retained in the unit drop out chamber.

The volatilized organics may then be processed by an integral catalyst module, which can be supplied with the Ceramic Filter System or processed by an independent thermal or catalytic oxidizer. The oxidation of the volatilized organics results in the generation of CO2 and H2O vapor as the products of combustion.


  • Self-cleaning function eliminates the need for standard filter systems and the costs, downtime and liability associated with these disposable filtration methods
  • Can be located immediately following the process. Reduces fire hazard caused by build-up of flammable material on duct walls
  • Oxidizes organic compounds, eliminating odors
  • Automatic safety shutdowns prevent equipment damage during upset conditions
  • Removes particulate prior to a secondary control device, permitting the use of various oxidizer technologies on processes with particulate laden air streams.

Available Options

  • The SCCF can be cleaned off-line or supplied with the “on-line cleaning option” providing process flexibility and applicability to many different applications
  • Integrated into process line
  • Exhaust stack extensions
  • Heat exchanger and energy recovery modules
  • Not sure the SCCF is right for your application? We have rental pilot systems available for on-site testing.

Electric & Alternative Heating Options

Anguil has decades of experience supplying alternative heating methods for oxidizer technologies. While the electrically heated catalytic oxidizer is well established and widely applied, the industry has been slower to integrate lower carbon components like electric heating elements and hydrogen fueled burners into the Regenerative Thermal Oxidizer (RTO).

Thankfully, Anguil is at the forefront of low-carbon oxidation solutions with established designs and scalable options for both thermal and catalytic oxidizers. When compared to traditional natural gas fired combustion systems, these industry leading technologies offer:

  • Lower Carbon Footprint
  • Faster Installation
  • Quicker System Start-Up
  • Enhanced Flexibility During Low-Flow Conditions
  • Reduced Maintenance & High Reliability
  • Comparable Capital Costs

Anguil oxidizer designs with electric heating elements have zero NOX, SOX, or CO2 emissions and eliminate the need for gas connections, fuel trains and burners. For customers with hydrogen capacity, we also offer these specialty burners which eliminate SOX and CO2 emissions. Dual-fuel functionality is also an option for situations where redundancy is required.

All these benefits, with the same high-energy recovery and destruction efficiencies seen from using natural gas burners.

Acid Gas Control: Wet Scrubbers

The Anguil Acid Gas Scrubber neutralizes inorganic acids that often 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).

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

How the Scrubber Module Works

The acid containing stream is directed to a water quench located upstream of the scrubber module by an induced draft process fan located on the outlet of the scrubber. Within the quench, a re-circulation pump injects large volumes of water to cool the hot process stream, allowing the use of low-temperature materials of construction that are resistant to acid, such as Fiberglass Reinforced Plastic (FRP). 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. For most acid gases, 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

Corrosive Emission Control-Upgraded Materials of Construction

Anguil’s thermal and catalytic oxidizer technologies are capable of destroying halogenated organic acids and mixed organic vapor contaminants that are discharged from a variety of industrial process streams. We have also developed several destruction devices specifically for soil and groundwater remediation sites contaminated with chlorinated compounds such as carbon tetrachloride, tetrachloroethene (PCE) or trichloroethene (TCE). 

The Anguil Advantage

  • Upgraded materials of construction ensure long equipment lifetime
  • Decades of experience handling chlorinated compounds from various applications
  • System flexibility addresses a wide range of process conditions and easily controls multiple sources
  • Competitive capital equipment cost

How the Chlorinated Oxidizer Works

The Chlorinated model is selected based on volume of airflow, contaminant type and desired destruction efficiency. Similar to a standard thermal or catalytic oxidizer, destruction of emission laden air is achieved through high temperature combustion with heat recovery to reduce operating costs by preheating incoming contaminants. When halogenated hydrocarbons such as chlorine, bromine and fluorine are present in the process gas, Anguil makes special considerations to design an emission control system that will not only protect against corrosion but also scrub the acids produced during oxidation.

Design Considerations:

  • Temperature and residence times are increased to ensure halogen destruction efficiency
  • Induced draft fan design is used to eliminate acid gas escape
  • Critical components are upgraded to higher alloys to withstand the corrosive emissions
  • External shrouds are added or vinyl ester coatings applied to prevent acid corrosion of the external shell
  • When special coatings are applied they are subject to pre and post application inspections by a third party
  • Acid Gas Scrubbers are incorporated into the system for further treatment of acidic emissions
  • FRP (Fiberglass Reinforced Plastics) fan and ductwork are used when necessary

Turn-key Installation Packages-Single Source Responsibility

We understand how important it is for your Anguil system to be delivered and operational when planned. What separates Anguil from the competition is our ability to execute your oxidizer project in a turn-key fashion, from start to finish. Installation strategy is considered early when your project is still on the drawing board and continually cross-examined until ready for start-up. Anguil’s single source of responsibility gives you full confidence in a successful installation, allowing you to keep focus on your business.

The installation process is one of the most important portions of the project and can account for a substantial portion of the overall project budget and schedule. We take special precautions to prevent disruptions in your process and ensure a timely, quality, and on budget installation. Our full menu of installation capabilities include, but are not limited to:

  • Engineering services
  • Installation supervision
  • Mechanical, electric, and gas installation
  • Ductwork design, supply, and erection
  • System integration into your existing processes
  • System startup, operator training and remote monitoring
  • Controls design, supply, and integration

Many of our systems arrive on-site as modules: pre-assembled, pre-wired, factory tested and ready for a fast and efficient start-up. Our installation team can provide full turn-key services or simple installation supervision. You will be up and running with an Anguil-certified system from day one that will put you in full compliance, guaranteed.

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