Haat makes both Regenerative Thermal Oxidizers (RTOs) and Direct Fired Thermal Oxidizers (DFTOs). In this blog, let us talk about the DFTOs.  These types of thermal oxidizers are sometimes also simply referred to as Vent Gas Incinerators or as an Incinerator Package.

Practically every manufacturing process produces gaseous waste by-products which are a serious concern for the environment.  Thermal oxidation has been proved to be an effective and safe method for the disposal of a wide variety of industrial gaseous wastes if proper thermal oxidizer design practices are followed.

Thermal Oxidizers typically handle and destroy Hazardous Air Pollutants (HAPs) and Volatile Organic Compounds (VOCs) from industrial air streams.  These pollutants are generally hydrocarbon based and when destroyed via thermal oxidation, they are chemically changed to form CO2 and H2O.

Thermal oxidizer design can be relatively straight forward or complex, depending on the application, waste characteristics, and the air emission requirements.  Most thermal oxidizer designs incorporate similar design principles to ensure that the desired oxidation reaction occurs and the waste stream contaminants are reduced to the levels necessary to achieve emission compliance.

The waste stream has to be analysed and put through specialised software to produce heat mass balance data, which will decide the design of the thermal oxidiser, the oxidation temperature, residence time, etc.  Depending on the area classification, the motors, instruments and electrical panel may be selected to conform to suitable categories.

Haat has supplied and installed thermal oxidisers in different industries for various gaseous wastes. 

These include:

- Chemical industry

- Dairy industry

- Graphite products manufacturing

- Can manufacturing

- Printing presses

- Raw material manufacturing for paints and other chemicals

When the waste gas contains fewer amounts of VOCs, a fuel assisted thermal oxidation process is adopted in designing the DFTO.

In the case of dairy industry applications, the DFTO is generally electrically operated at a lower temperature than the other designs and the waste gas passes through the chamber where the bacteria gets fully destroyed, helping to release clean gases to the atmosphere.

Whatever be the nature of waste, liquid, solid, semi-solid, gaseous, etc. the industry can always count on Haat to provide an acceptable solution.

More on Haat’s Direct Fired Thermal Oxidiser here – OXR.