Honeycomb Ceramic Cleaning Technology

Honeycomb ceramics are core materials in catalysis, filtration, and heat storage. In practical use, their pores are easily clogged by contaminants, leading to performance degradation. Scientific cleaning technology is crucial for maintaining efficiency, extending lifespan, and reducing costs.

Types of Contaminants

Physical Clogging: Caused by particulate matter such as dust and oil mist, it increases system pressure and reduces processing capacity.

Chemical Poisoning: Harmful substances such as sulfur and phosphorus combine with the catalyst, causing permanent deactivation.

Carbon Deposits: Carbon soot and organic matter cover the surface, hindering catalytic reactions.

Ash Deposition: Metal compounds deposit at high temperatures, potentially damaging the ceramic structure.

Cleaning Methods

Physical Cleaning

Gas Backflushing: Uses high-pressure gas to remove loose dust; simple to operate and suitable for online cleaning.

High-Temperature Calcination: Removes carbon deposits through temperature-controlled combustion; commonly used for DPF regeneration.

Ultrasonic Cleaning: Utilizes acoustic cavitation for deep cleaning; suitable for high-value components.

Chemical Cleaning

Acid/Alkali Cleaning: Dissolves specific deposits (such as alkali metal salts and scale), but caution must be taken regarding the corrosiveness to the material.

Specialized Reagents: Selectively removes toxins such as sulfur and phosphorus; requires advanced technical skills.

Water Washing/Steam Cleaning: Removes water-soluble salts; thorough drying is required afterward.

Operating Points

Diagnose: Identify the type of contaminant to avoid damage from improper cleaning.

Consider the Material: Different ceramics (such as cordierite and silicon carbide) have different chemical resistances; a matching solution must be selected.

Protect the Coating: Protect the catalyst coating during cleaning to prevent peeling.

Dry Thoroughly: Thorough drying is essential after wet cleaning to prevent cracking.

Test: For valuable catalysts, small-scale testing is recommended first.

Conclusion

Cleaning honeycomb ceramics is a key technology for maintaining their core performance and economic benefits, not just a simple maintenance procedure. It requires accurate contaminant diagnosis, strict matching of material properties, and priority protection of functional coatings. Effective cleaning can significantly restore system efficiency and extend service life. We are a Chinese manufacturer of honeycomb ceramics. For more information, please contact us via email at annayu@169chem.net or WhatsApp at +8618909016373.