In-Situ Catalyst Replacement^SM

Cormetech’s innovative In-Situ Catalyst Replacement^SM (patent pending) process comprises removing catalysts from modularized sections of catalyst layers within a reactor. This is performed without removing the steel frame modules that support the catalyst, resulting in reduced time and costs compared to conventional replacement methods. Prior to catalyst removal, a visual inspection or spot sampling, in conjunction with chemical and physical performance tests may be conducted to pre-qualify the process for a given unit. The In-Situ method has been used to replace honeycomb and can be extended to perform replacement of low surface area plate or corrugated SCR catalysts. The In-Situ method can be performed on an entire layer or partial layer of catalyst. On a case specific basis the in-situ method can be a more economical and efficient approach compared to conventional methods of catalyst replacement when a facility’s key requirements are:

• Performance improvement by installing the latest catalyst technology
• Compressed outage turn-around
• High cost and/or limited availability of cranes and other services needed for a traditional extract and install plan
• Limited reactor access or preference to utilize existing entry doors
  

Cormetech’s In-Situ Catalyst Replacement^SM is successfully employed at TVA’s Allen Station, Units1, 2 and 3.