Lämpöoksidoinnin

Lämpöoksidoinnin, sometimes referred to as thermal oxidation, is a process used to treat gaseous waste streams, primarily volatile organic compounds (VOCs) and odorous compounds. The fundamental principle involves exposing these waste gases to high temperatures, typically in the range of 700 to 1200 degrees Celsius, in the presence of oxygen. This high temperature and the presence of oxygen cause the organic pollutants to break down into less harmful substances, primarily carbon dioxide and water vapor.

The process typically begins with preheating the waste gas stream to optimize the reaction. The preheated gas then enters a combustion chamber where it is mixed with a fuel (often natural gas or propane) if the VOC concentration is too low to sustain combustion on its own. The high temperature maintained in the chamber ensures complete combustion of the pollutants. After combustion, the hot flue gases are usually passed through a heat exchanger. This heat exchanger recovers a significant portion of the heat generated during the oxidation process, which can then be used to preheat incoming waste gases or for other industrial purposes, thereby improving energy efficiency.

Lämpöoksidoinnin is an effective method for destroying a wide range of organic pollutants and is often employed in industries such as chemical manufacturing, printing, and automotive production. While it is a highly efficient method for pollutant destruction, it requires substantial energy input due to the high operating temperatures and can produce nitrogen oxides (NOx) as a byproduct, which may require further treatment depending on emission regulations.