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Catalyst passivation services

Cat Tech International uses CATnapTM, an exclusive technique for quick and safe unloading of catalysts from petroleum processing units. The CATnap process allows the spent catalyst to be removed in an air atmosphere versus purging the reactor with nitrogen and performing inert entry.

Shorter Unit Shutdown Time
Because the CATnap process allows for the reactor to be cooled down in a liquid state, the need for hot hydrogen stripping can be eliminated in most cases. This can decrease the unit’s shutdown time by as much as 48 hours depending on the size of the unit.

Eliminates Inert Entry
CATnap technology passivates pyrophoric or self-heating catalysts by the application of a proprietary coating chemical. Catalyst and equipment surfaces are coated with an organic film, which retards oxygen penetration and reaction. The passivated catalyst can be unloaded under air, which eliminates many of the hazards and expenses related to inert entry.

Eliminates Airborne Dust
CATnap coats the smaller particulates and dust particles, which typically bind to the larger catalyst particles during unloading, thereby eliminating dust.

Increases Vacuum Unloading Rates
Dust is essentially eliminated during the vacuum process, which greatly enhances the vacuum rates for unloading due to increased efficiencies in the bag house filtration systems of the vacuum equipment.

Other Literature

CATnap delivers faster, safer catalyst changeout

Is a dust-fee catalyst changeout process that should save you over 24 hours in your initial reactor shutdown timeline. Its also a safer process (non-inert-entry) that reduces the hazards of handling, transporting and storing passivated catalyst. And CATnap renders the catalyst non-pyrophoric to prevent ...


Tower field services

Cat Tech Tower Field Services offers bespoke mechanical services to oil refinery and petrochemical plants all around the world. Our team has vast experience in overseeing and undertaking the installation of all types of Tower internals. Our Tower tray, packing and other internals installation services ...


Catalyst passivation services

Cat Tech International uses CATnapTM, an exclusive technique for quick and safe unloading of catalysts from petroleum processing units. The CATnap process allows the spent catalyst to be removed in an air atmosphere versus purging the reactor with nitrogen and performing inert entry.

Shorter ...


Making your plant work smarter

Cat Tech is at the forefront of new technologies. After years of research we are now unloading and loading catalysts from petroleum processing units faster, safer and more economically than ever before. And we continue to create specialised equipment and processes to help you stay on schedule and increase ...


CATnapTM catalyst passivation process - an alternative to inert entry

Cat Tech is pleased to present the CATnap® Catalyst Passivation Process - an exclusive, patented technique for unloading catalysts from petroleum processing units. CATnap technology passivates pyrophoric or self-heating catalysts by the application of a proprietary CATnap catalyst coating chemical. ...