StyroMax rib-shaped catalysts
Reactor pressure is critical in styrene production, as elevated pressures increase by-product formation. Extreme pressures may also impact the performance of the evaporating systems.
The solution: Clariant's StyroMax rib-shaped catalysts’ unique design reduces pressure drop by 30 to 50% compared to standard cylindrical shapes at similar operating conditions.
Going with the flow
StyroMax rib-shaped catalysts have a cylindrical core supported by five ribs that create five channels and strengthen the catalyst pellet. The unique geometry prevents the ribs from fitting into the channels.
![Clariant Icon Complete 2020 10 06](/images/blank.gif)
The higher void fraction of the rib extrusions lowers pressure resistance during operation.
![Clariant Icon Complete 2020 10 06](/images/blank.gif)
The channels improve flow distribution, enabling more uniform profiles in the reactor.
![Clariant Icon Complete 2020 10 06](/images/blank.gif)
Reduced overall pressures greatly benefit the thermodynamics of ethylbenzene dehydrogenation.
![Clariant Icon Complete 2020 10 06](/images/blank.gif)
The shape’s high surface area increases catalyst activity, since the reaction rate is mass-transfer controlled.
Lower pressure drop
![Clariant Image Pressure Drop Chart 21 12 06](/-/media/Images/Business-Units/Catalysts/Petrochemical-and-Refining-Catalysts/Clariant-Image-Pressure-Drop-Chart-21-12-06.png)
Proven technology, in commercial operation for more than 30 years
Excellent flow distribution throughout loaded beds
Higher activity due to greater catalyst surface area
Less by-product formation due to favorable pressure conditions
Improved performance, stability, and tolerance to operational upsets
Available for all StyroMax series catalysts
Unique performance benefits
ROBUST CATALYST
> 25%
higher mechanical strengthprotects catalyst during loadingand operation
ADDITIONAL PROTECTION
> 15%
lower loaded weightreduces mechanical stress in reactorand prevents screen damage
SMOOTH OPERATION
> 50%
lower pressure dropduring full cycle favors dehydrogenationand prevents by-products