Ferrite Catalyst Pore Structure Butadiene Yield Steam Reduction
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Solution Overview
Problem
The oxidative dehydrogenation of butene to produce butadiene using ferrite catalysts is economically inefficient due to the high cost and heat energy loss associated with excessive steam usage, which also leads to increased wastewater treatment costs and reduced process feasibility.
Innovation Solution
A ferrite catalyst is developed with a specific pore structure and preparation method involving metal precursors, heat treatment, and loading into a carrier with controlled porosity, allowing for a reduced steam requirement while maintaining high butadiene yield and selectivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If excessive steam is used in oxidative dehydrogenation of butene, then butadiene selectivity and conversion rate increase, but steam cost and heat energy loss increase significantly
Solution Approach 1:
The patent employs a porous support structure with controlled pore size distribution to enhance catalyst performance. The porous material increases the surface area for reaction while improving mass transfer efficiency, allowing the reaction to proceed effectively with reduced steam requirements. This resolves the contradiction by maintaining high conversion rates without the need for excessive steam.
Solution Approach 2:
The patent optimizes multiple parameters including steam-to-butene ratio, reaction temperature, and catalyst composition to achieve high butadiene selectivity with minimal steam consumption. By carefully controlling these parameters, the process achieves high conversion rates while minimizing energy loss associated with steam generation and condensation.
2Reliability
If excessive steam is used in oxidative dehydrogenation of butene, then reactor stability improves, but wastewater treatment cost increases
Solution Approach 1:
The porous support structure provides thermal management capabilities that stabilize reactor operation. The porous material's heat capacity and surface area facilitate efficient heat distribution and removal, maintaining reactor stability without requiring excessive steam for heat carrier functions, thereby reducing wastewater generation.
Solution Approach 2:
The patent converts the potential harm of oxygenates produced during reaction into a benefit by utilizing them as additional feedstock or by designing the catalyst to selectively minimize their formation. This approach reduces the amount of wastewater requiring treatment while maintaining reactor stability through optimized catalytic activity.
3Productivity
If traditional ferrite catalyst is used, then oxidative dehydrogenation reaction can proceed, but butadiene selectivity and conversion rate are insufficient under low steam conditions
Solution Approach 1:
The patent employs a composite catalyst system consisting of ferrite active phases supported on porous materials with optimized pore structures. This composite structure combines the catalytic activity of ferrite with the mass transfer and thermal management benefits of the porous support, achieving high butadiene yield under reduced steam conditions where traditional ferrite catalysts would be insufficient.
Solution Approach 2:
The porous support structure enhances the traditional ferrite catalyst by providing increased surface area, improved reactant access to active sites, and better product desorption. This allows the catalyst to achieve high conversion rates and selectivity with significantly reduced steam requirements compared to conventional ferrite catalysts.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The ferrite catalyst achieves a high butadiene yield and stable reactor operation using less steam, reducing waste water generation and enhancing process efficiency by controlling catalyst activity and heat management.
Implementation Method 1
An oxidative dehydrogenation reaction of butene for preparing butadiene... is a reaction producing butadiene and water by the reaction of butene and oxygen
Implementation Method 2
steam is known to... enhance stability of a reactor by removing reaction heat released during the oxidative dehydrogenation reaction
Implementation Method 3
mixing the aqueous precursor solution with a basic solution and coprecipitating the result
Data Source
AI summary
The present specification provides a ferrite catalyst, a method for preparing the same and a method for preparing butadiene using the same.