Operating principle Ecopure® TAR
As in all thermal processes, the exhaust air is heated to a high enough temperature to oxidize the pollutants (hydrocarbons). This produces steam and carbon dioxide. In the Ecopure® TAR Air Pollution Control System, the polluted air is initially heated by the hot clean air in the integral recuperative heat exchanger. This allows a large proportion of the combustion heat to be recovered.
When the air enters the combustion chamber, the burner heats it further to over 700°C. This starts the process of oxidizing the pollutants, which is completed after the exhaust air has passed through the chamber. The hot clean gases then pass into the exhaust air heat exchanger, which removes the heat and uses it to pre-heat the incoming exhaust air.
Before the treated exhaust air is released into the atmosphere, any residual heat is generally used by downstream heat recovery systems to heat thermal oil, hot water, or air or to generate saturated steam.
The consumption of primary energy in the oxidation process is typically highly dependent on the quantity and heating value of the pollutants. For this reason, natural gas, liquid gas, heating oil, and other organic fuels can be used as supplementary fuels in the Ecopure® TAR Air Pollution Control System.