Overview Of a Regenerative Thermal Oxidation Device and How Does It Work?

Regenerative thermal oxidation is the most extensively utilized technique for removing volatile organic compounds (VOCs) from industrial emissions.

At ordinary room temperature, VOCs are all organic compounds that exist as gas or an extremely volatile liquid. In practice, VOCs are all organic compounds with a vapor pressure of 0.01 kPa or above, or equivalent volatility, in the specific conditions of usage at 20ºC. VOCs contain additional elements such as oxygen, fluoride, chlorine, bromine, Sulphur, or nitrogen and usually have fewer than twelve carbon atoms in their chain.

Although there are over 1,000 different VOCs, methane, toluene, n-butane, isopentane, ethane, benzene, n-pentane, propane, and ethylene are the most common in the air. Organic solvents (such as benzene, acetaldehyde, aniline, acetone, carbon tetrachloride, ethanol, and others) are utilized in industrial processes to produce these chemicals.

VOCs are destroyed through regenerative thermal oxidation, which converts them to CO2 and H2O. The procedure takes place inside towers packed with ceramic material, where the contaminants are oxidized at 750 degrees Celsius. The system has a thermal efficiency of more than 95%, reducing the amount of gas used to maintain the temperature.

Regenerative thermal oxidation has a wide range of flow rates, ranging from 2,000 to 100,000 Nm3/h, making it excellent for medium-high concentrations of VOCs (0.3-10 g/Nm3) and a wide range of VOCs.

This equipment uses a set of conical closure valves to produce a high level of purifying efficiency while avoiding the risk of untreated air leakage. This technology allows the equipment to remain closed throughout the night shift or on weekends, keeping a high temperature and so allowing for a quick start and reduced energy use.

What Are the Main Components of a Regenerative Thermal Oxidation Device?

• Chamber for combustion.
• Main fan.
• Ceramic bed.
• Combustion air fan and burner.
• The platform for operation and maintenance.
• Valves used in the manufacturing process.
• System of purging.

What Are the Applications of a Regenerative Thermal Oxidation Device?

• Industry of iron and steel.
• Industry of plastics.
• Industry of food.
• Forestry industry.
• Industry of paint, varnish, and lacquer.
• Industry of livestock.
• Industry of pharmaceuticals.
• Industry of cosmetics.