Metallic Sheet Percolations for Catalyst Bed Condensation
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Solution Overview
Problem
In catalytic processes, the condensation of liquid reaction products on catalyst particles can reduce catalyst activity and hinder efficient product removal from the gaseous phase to the liquid phase, as seen in methanol production from synthesis gas, where existing methods either fail to prevent condensation on catalysts or reduce catalyst effectiveness.
Innovation Solution
A method and apparatus utilizing a metallic sheet with geometric-shaped protrusions between the catalyst bed and a cooling surface, where the protrusions have an open base facing upwards towards the catalyst bed and downwards towards the cooling surface, allowing condensation and transport of the liquid reaction product outside the catalyst bed, thereby preventing detrimental redirection into the catalyst bed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If condensation of liquid reaction product is allowed on catalyst particles to improve product removal from gaseous phase, then the equilibrium yield and reaction rate are improved, but the catalyst activity is reduced
Solution Approach 1:
The invention segments the condensation function from the catalyst bed by introducing a separate cooling surface with percolations. The catalyst bed is divided into regions where condensation occurs on the cooling surface rather than on catalyst particles, allowing simultaneous high productivity and maintained catalyst activity through spatial separation of functions.
Solution Approach 2:
The cooling surface with percolations acts as an intermediary between the gaseous reaction stream and the liquid condensation collection system. This intermediary structure enables efficient heat transfer and liquid transport while preventing direct contact between condensed liquid and catalyst particles, thus resolving the contradiction between product removal efficiency and catalyst protection.
2Ease of operation
If condensation occurs directly on catalyst particles, then product removal is simplified, but liquid redirection into catalyst bed causes catalyst deactivation
Solution Approach 1:
The invention extracts the harmful condensation process from the catalyst bed environment by providing a dedicated cooling surface with percolations located at the periphery. Liquid condensate forms on this separate surface and is channeled away through percolations before it can redirect into the catalyst bed, thus taking out the harmful effect while maintaining efficient product removal.
Solution Approach 2:
The invention converts the potentially harmful condensation process into a beneficial operation by directing it onto a specially designed cooling surface with percolations. The condensation that would otherwise harm the catalyst is instead used to drive liquid flow through the percolations and out of the reactor, transforming a harmful effect into a useful transport mechanism.
3Productivity
If cooling surface is placed directly in contact with catalyst bed, then condensation efficiency is improved, but liquid transport back into catalyst bed occurs
Solution Approach 1:
The invention applies local quality by providing cooling surface only at specific locations (periphery of catalyst bed) rather than throughout the entire catalyst bed. The percolations are strategically positioned to allow liquid transport in controlled directions, creating local zones with different functional qualities that prevent harmful liquid redirection while maintaining condensation efficiency.
Solution Approach 2:
The invention moves the condensation function to another spatial dimension by placing the cooling surface at the periphery of the catalyst bed rather than within it. This dimensional relocation allows efficient heat transfer and condensation while the peripheral positioning and percolation design prevent liquid from redirecting back into the catalyst bed interior.
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
This approach effectively separates the liquid reaction product from the gaseous stream without reducing catalyst activity, allowing for high methanol yields while maintaining catalyst effectiveness by ensuring condensation and transport occur outside the catalyst bed, thus overcoming thermodynamic equilibrium limitations.
Implementation Method 1
condensing a gaseous reaction product being formed by reaction of the gaseous stream in the catalyst bed to the liquid reaction product on the metallic sheet
Implementation Method 2
providing in the metallic sheet being indirectly cooled by the cooling surface
Data Source
AI summary
Method and apparatus for separating a liquid reaction product from a gaseous stream in a catalytic reactor by means of a metallic sheet being indirectly cooled by a cooling surface and having a plurality of percolations in form of geometric-shaped protrusions on both sides of the sheet each with an open base, the open base is on the side of the sheet facing a catalyst bed are arranged upwards and on the side facing the cooling surface the open base faces downwards.