Control of Volatile Organic Compounds Dr. Wesam Al Madhoun. Characteristics.
1- When the VOC-laden gas stream only contains one to three organic solvent compounds, and it is economical to recover and reuse these compounds, or
2- When the VOC-laden gas stream contains a large number of organic compounds at low concentration, and it is necessary to preconcentrate these organics prior to thermal or catalytic oxidation.
- by using a freon-based refrigerant to create very cold coils, or by injecting cryogenic gases such as liquid nitrogen into the gas stream.
- and the VOC removal efficiencies are in the 90 to 99% range depending on the vapor pressures of the specific compounds.
- due to the extremely low vapor pressures of essentially all VOC compounds at the very low operating temperatures of -70°F to less than -200°F.