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Thermal Oxidizers


Thermal oxidizers reduce air pollution emissions emanating from a variety of industrial processes. The exhaust airflows in industrial applications may have particulate matter (PM) or dense concentrations of Volatile Organic Compounds (VOCs), which thermal oxidizers transform into an innocuous emission of water vapor, carbon dioxide, and heat.

What is a Thermal Oxidizer?


Conceptually a thermal oxidizer is a burner in a box that inputs contaminanted airstreams from industrial processes. The mechanism of thermal oxidation is a combustion process that interacts the exhaust gas with oxygen in a temperature controlled environment. The contaminants undergo a chemical oxidation reaction, leading to their destruction before discharging into the atmosphere. The output of a thermal oxidizer is an innocuous emission of carbon dioxide, water, and heat.

CCS&ES Thermal Oxidizers


Combustion Controls Solutions is a leading expert in oxidizer systems, offering a wide range of state-of-the-art, air pollution control technologies: featuring advances in the efficient abatement of Hazardous Air Pollutants (HAPs), Nitrogen Oxides (NOx), Volatile Organic Compounds (VOCs), and process odors. The air pollution control products are user-friendly, while maintaining a cost-efficient approach for the optimal destruction efficiency of contaminants. From the design, build, and servicing of air pollution control products CCS&ES is dedicated to working closely with customers anywhere and anytime. We provide innovative solutions for air pollution control, including process analysis, engineering, equipment manufacturing, installation, and 24-hour aftermarket service.

How does a regenerative thermal oxidizer work?



Regenerative thermal oxidizers operate in two phases, namely the pollutant destruction phase and the clean air cycle. In what follows we describe the input to the regenerative thermal oxidizer process, transformation of polluted waste into an innocuous mixture of carbon dioxide, water, and heat, and the output purified air.

Pollutant destruction phase

The pollutant destruction phase commences the regenerative thermal oxidation process, whereby a high pressure supply fan forces exhaust fumes from industrial processes into the oxidizer as the input. The input pollutant laden airstream is guided into an energy recovery canister by an inlet switch valve. Afterwards the airstream continues on a path from the valve assembly to the first heat exchanger. Due to thermodynamic and chemical effects energy is transferred to the airstream from the ceramic media, causing the particles in the airstream to move with great velocities. This increase in temperature is regarded as airstream preheating before arrival to the combustion chamber. As the air moves into the combustion chamber it becomes trapped, and the temperature of the air increases leading to a chemical reaction known as thermal oxidation. Thereby the contaminents in the air are destroyed, while in the combustion chamber.

Clean air cycle

In the second phase of the thermal oxidizing process the purified air is directed out of the combustion chamber and into a second energy recovery canister. The air is at a higher temperature than the ceramic media in the canister, thus the media acts as a heat reservoir. In other words energy in the form of heat is transferred from the air to the ceramic media. The last step involves reemission of the purified air into the atmosphere. An outlet switch valve directs the clean air through an exhaust stack and back into the atmosphere. The regenerative thermal oxidizer process has the advantageous property of achieving high and reliable thermal energy efficiencies, as well as optimal destruction efficiences over 99%.


Types of Thermal Oxidizer Systems


Regenerative Thermal Oxidizers

Regenerative Thermal Oxidizer Regenerative thermal oxidizers are widely used for their energy efficiency. Read more to learn about their design and state-of-the-art build for emissions abatement.


Recuperative Thermal Oxidizers

Recuperative Thermal Oxidizer Typically incorporating a multi-pass metal heat exchanger with cleanable tubes, a recuperative thermal oxidizer is a robust technology for applications with particulates.


Direct Fired Thermal Oxidizers

Direct Fired Thermal Oxidizer The direct fired oxidizer is the simplest thermal oxidizer. This oxidizer is an ideal technology for the abatement of process streams laden with pollutants and intermittent batch processes.
 
  Regenerative Thermal Oxidizers
  Recuperative Thermal Oxidizers
  Direct Fired Thermal Oxidizers
  Catalytic Oxidizers



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