Regenerative Thermal Oxidizer

Widely considered to be the most energy-efficient oxidizer, Anguil’s Regenerative Thermal Oxidizer (RTO) uses ceramic media to recover upwards of 97% of the available energy.

What makes our RTO so popular is its ability to repurpose the thermal energy generated during operation to reduce operating costs and energy consumption of the system itself. The regenerative component makes it capable of fuel-free operation at very low VOC concentrations.

WHAT SETS ANGUIL’S RTO APART?

Anguil’s first RTO was designed and manufactured in the early 1990’s. Since then, our design has undergone countless enhancements with operator input always at the forefront.

Destruction efficiency (99+%) and thermal energy recovery efficiency (up to 97%), guaranteed compliance with industrial regulations
Custom-designed poppet valves ensure minimal leakage and thus high destruction efficiency and optimized heat recovery
Small equipment footprint

Product Overview
Benefits of Anguil’s RTOs

System pressure drop resulting in reduced electrical consumption

Multiple designs for easier and faster installation

Greater system flexibility and versatility

High reliability and long-life expectancy (15-20 years+)
Programmable Logic Controllers (PLCs): automate operation startup to shutdown, minimizing operator interface requirements. Remote telemetry enables the system’s operation to be viewed and altered via modem, reducing maintenance costs and downtime. Control rooms and various enclosure options available.

Ceramic Media: True Thermal Rate Efficiencies up to 97% with low pressure drop and multiple options for handling particulate.

Poppet Valves: Zero leakage, dual-disk Poppet valve design achieves 99%+ destruction efficiency without a puff chamber or reliability concerns.

Low NOX burner designed to maintain temperature during full flow, no VOC process conditions.

Gas trains are designed to meet FM Global or any international certifications such as CSA, EN, TSSA and CGA.

Hinged Access Doors: allow for easy maintenance and inspection of the valves and media beds.

Hinged Access Doors: allow for easy maintenance and inspection of the valves and media beds.

99%+ Destruction Rate Efficiency (DRE): Regulatory Compliance Guaranteed.
Air Flow Range & Efficiency
Air Flow Range

3,000-70,000 SCFM (4,815-112,350 Nm3/hr) / Single Unit

70,000-500,000 SCFM (112,350-802,500 Nm3/hr) / Multiple Units

Concentration Range

0 – 25% LEL

Destruction & Removal Efficiency

99%+
Programmable Logic Controllers (PLCs): automate operation startup to shutdown, minimizing operator interface requirements. Remote telemetry enables the system’s operation to be viewed and altered via modem, reducing maintenance costs and downtime. Control rooms and various enclosure options available.

Ceramic Media: True Thermal Rate Efficiencies up to 97% with low pressure drop and multiple options for handling particulate.

Poppet Valves: Zero leakage, dual-disk Poppet valve design achieves 99%+ destruction efficiency without a puff chamber or reliability concerns.

Low NOX burner designed to maintain temperature during full flow, no VOC process conditions.

Gas trains are designed to meet FM Global or any international certifications such as CSA, EN, TSSA and CGA.

Hinged Access Doors: allow for easy maintenance and inspection of the valves and media beds.

Hinged Access Doors: allow for easy maintenance and inspection of the valves and media beds.

99%+ Destruction Rate Efficiency (DRE): Regulatory Compliance Guaranteed.
Ideal Applications
Ideal Applications

High DRE (Destruction Rate Efficiency) & TER (Thermal Energy Recovery) requirements

Large flow, low concentration process streams

Wide range of temperature and contaminant capability

Corporate sustainability drivers: highly energy efficient, reduced utility costs, low carbon footprint
Programmable Logic Controllers (PLCs): automate operation startup to shutdown, minimizing operator interface requirements. Remote telemetry enables the system’s operation to be viewed and altered via modem, reducing maintenance costs and downtime. Control rooms and various enclosure options available.

Ceramic Media: True Thermal Rate Efficiencies up to 97% with low pressure drop and multiple options for handling particulate.

Poppet Valves: Zero leakage, dual-disk Poppet valve design achieves 99%+ destruction efficiency without a puff chamber or reliability concerns.

Low NOX burner designed to maintain temperature during full flow, no VOC process conditions.

Gas trains are designed to meet FM Global or any international certifications such as CSA, EN, TSSA and CGA.

Hinged Access Doors: allow for easy maintenance and inspection of the valves and media beds.

Hinged Access Doors: allow for easy maintenance and inspection of the valves and media beds.

99%+ Destruction Rate Efficiency (DRE): Regulatory Compliance Guaranteed.

DESIGN FEATURES AND OPTIONS FOR ANGUIL TECHNOLOGY

Features

Pre-assembly, wiring, and testing as much as possible prior to shipment
Can handle process flows up to 25% Lower Explosive Limits (LEL) with self-sustaining LELs as low as 3%
The burner is sized for full flow, zero process VOC emissions so that the RTO can maintain temperature and VOC destruction efficiency over the entire range of process operation.
Bake-out capabilities designed to remove organic particulate buildup
Hinged access doors for ease of maintenance
Variable Frequency Drives (VFDs) to support high volumetric turn-down during low-process and idle conditions
Compliance with FM Global and other international certifications

Options

Various burner options including electric heating elements or multiple gas fuel inputs (natural gas, propane, hydrogen) and ultra-low NOx
Specialty designs for high-temperature, corrosive, or silicon-bearing compound conditions
Two-chamber and multi-chamber configurations
Hot Gas Bypass (HGB) for high VOC emission concentrations
Induced or forced draft fan arrangements
Supplemental Fuel Injection (SFI) with mixing vanes for fuel efficiency, low NOx operation, burner redundancy, and uniform temperature distribution
Acid gas scrubber module with a completely integrated control system
Secondary Heat and Energy Recovery systems for waste heat utilization
Integrated process air pre-heating to minimize condensation and allow the use of less expensive materials of construction

Explore All Oxidizer Options

Operating Cost Reduction Strategies

Cascade of process exhaust emissions to low total exhaust flow and capital/operating cost.
Secondary heat and energy recovery solutions
Oxidizer service and Preventive Maintenance Evaluations (PMEs)

HOW DOES THE RTO TECHNOLOGY WORK?

Regenerative thermal oxidizers are designed to destroy HAPs, VOCs, and odorous emissions discharged during industrial and manufacturing operations. They achieve emission destruction through high-temperature thermal oxidation—a process that employs a combination of temperature, residence time, turbulence, and oxygen to convert pollutants into carbon dioxide and water vapor.

Operations within RTOs occur as follows:

System fan draws process emissions into the RTO
The process stream is routed into the poppet flow control valves
Poppet valves direct the untreated process emissions into the first chamber filled with ceramic energy recovery media
High temperature and turbulence quickly break apart the contaminated compounds in the combustion chamber
The purified stream exits via the second media bed, releasing up to 97% of its heat value
Every few minutes, the poppet valves switch, and the flow reverses direction. The captured heat from the exiting purified stream preheats the incoming dirty process emissions.
Cleaned, cool air is released to atmosphere via the exhaust stack

Regenerative Catalytic Oxidizers (RCOs)

When catalyst is added to the media chambers of an RTO it is then referred to as an RCO. The abatement device still relies on high energy recovery to minimize auxiliary energy usage. However, the VOC compounds will oxidize at lower temperatures with the use of catalyst, further lowering the need for auxiliary energy. This is a great option for catalyst friendly compounds. Multiple catalyst and ceramic media options are available.

WHAT SETS ANGUIL’S RCO APART?

Decrease fuel usage (50-100%)
Less thermal cycling
Lower carbon monoxide emissions
Lower NOx emissions
Flexible design options allowing for conversion back to RTO

IDEAL RCO APPLICATIONS

Very low VOC concentrations

At Anguil, our engineers are always available to discuss your specific application and determine if an RTO or RCO is the best solution for your emission control needs. With decades of experience designing, manufacturing, installing and servicing air pollution control systems worldwide, we have the knowledge and expertise to provide custom solutions that meet the unique compliance needs of each customer. Contact us today to learn more about our RTO technology.