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Catalyst Cleaning and Rejuvenation

SCR-Tech catalyst processing facility

Cleaning and Rejuvenation Processes

SCR-Tech applies Cleaning & Rejuvenation processes to lightly or severely plugged or blinded catalyst that may have limited deactivation from catalyst poisons, or as part of the full ReGen™ process for severely poisoned and deactivated catalyst. The Cleaning & Rejuvenation processes eliminate materials physically plugging the catalyst in order to improve NO_x reduction efficiency and remove poisons, thereby extending the useful life of the catalyst.

Ultrasonic Cleaning: Our patented ultrasonic cleaning technique deep cleans the catalyst pores to remove physical and microscopic pluggage.

Rejuvenation:Catalyst modules are soaked, washed and rinsed in a series of temperature and pH-controlled baths that eliminate physical restrictions (e.g., blinding layers, large particle and fly ash) and remove catalyst poisons contributing to catalyst deactivation such as arsenic, phosphorus, thallium, sodium, potassium and calcium. The catalyst is then prepared for regeneration, if required.

Benefits of SCR-Tech Cleaning & Rejuvenation

• Extends useful catalyst life
• Optimizes NO_X reduction capability
• Guarantees:
  > No physical damage to the catalyst
  > No loss of structural integrity
  > No loss in remaining activity

Limitations

SCR-Tech’s Cleaning & Rejuvenation processes cannot cure reutilization, erosion, abrasion or other physical and/or structural damage to the catalyst, or restore catalyst activity levels. For full restoration of catalyst activity, our regeneration process may be applied.

Large particle ash damage to honeycomb catalyst	Erosion damage to plate catalyst