How Is the Working of Regenerative Thermal Oxidation Equipment Affected by the TSS?

The TSS (Temperature Safety System) either allows the process lines to feed into the oxidizer as soon as the required operating set-point temperature is reached, or it keeps the system in idle mode until production is ready. When production is complete, the fresh air purge damper closes, and one or more of the diverting dampers open, drawing VOCs away from the process lines.

One or more VOC-laden exhausts from your process lines are drawn into the system by a booster fan. VOCs are then channeled into one of the system’s regenerators (an internally insulated vessel containing ceramic media). The contaminated gases travel through the first regenerator, which transfers energy from the ceramic RTO medium to the gas, raising the temperature. This high temperature is directed from the ceramic bed into the combustion chamber, where it approaches the ignition point for most solvents.

Minimal heat is added to the process stream as it departs the ceramic bed and goes through the internally enclosed combustion chamber. The heat energy is subsequently absorbed by the oxidized gases, which are directed to the second regenerator. The CPI Posi-Seal Valves switch as the ceramic media loads with enough heat, and the gases are reversed through the system to the second regenerator bed, where the energy transfer and oxidation cycle is continued before being released to the atmosphere, or auxiliary heating systems such as secondary air to air recovery, air to water recovery, air to oil recovery, or directly back to the process.

How Does an RTO (regenerative thermal oxidation device) Work? 

The regenerative thermal oxidation device receives process exhaust air (which contains VOCs) and directs it into the ceramic heat-exchange media, where it is preheated.

The combustion chamber receives pre-heated air, which is then heated to the set-point temperature, completing the oxidation of the VOCs.

The heat exchange media cools the hot treated clean air before it is vented from the stack into the atmosphere.

The airflow process reverses direction every three minutes as the poppet valves change positions, allowing the heat captured in the ceramic medium from the exiting clean air stream to heat the incoming process air. A regenerative thermal oxidation device can achieve greater than 95% thermal efficiency thanks to the regeneration of the ceramic heat exchanger media, which has a high heat capacity.