When coating mica insulation materials, peaks of high contamination occur. The exhaust air containing organic compounds generates excess heat when oxidized in the regenerative thermal oxidizer (RTO) due to the properties of CTP's ceramic honeycomb elements (highest cleaning efficiency). This excess heat is used for the production of high-pressure steam. 

During the destruction of contaminants, SiO₂ is produced from siliceous components. The SiO₂ accumulates in the combustion chamber area of the ceramic blocks. In conventional heat exchangers these deposits are difficult to remove. CTP has developed a special kind of RTO with two grid levels which facilitates the cleaning of the ceramic layers with water, the channels of the honeycomb block allowing a washing process.

Conclusion: The cleaning problem of the heat exchangers was solved. The contaminants were destroyed efficiently and economically while steam for the production process was generated at no additional cost.