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.
The higher void fraction of the rib extrusions lowers pressure resistance during operation.
The channels improve flow distribution, enabling more uniform profiles in the reactor.
Reduced overall pressures greatly benefit the thermodynamics of ethylbenzene dehydrogenation.
The shape’s high surface area increases catalyst activity, since the reaction rate is mass-transfer controlled.
Lower pressure drop
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
