Segmented Radial Catalytic Reactor for High-Flow Hydrocarbon Reforming
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional radial bed catalytic reactors for hydrocarbon reforming face limitations such as catalyst blocking, high pressure drops, and low productivity due to restricted hydrocarbon flow rates, which hinder efficient catalytic reforming and lead to catalyst deactivation.
Innovation Solution
A catalytic reactor design featuring a thin catalytic bed and an annular zone with a solid thread, allowing for increased productivity by controlling pressure drops and enabling higher hydrocarbon flow rates, with a reaction zone comprising multiple independent catalytic modules for improved maintenance and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the hydrocarbon charge flow rate is increased to improve productivity, then the productivity increases, but the catalyst grains become blocked against the central manifold wall
Solution Approach 1:
The reactor is divided into multiple independent catalytic modules (at least two modules) arranged radially, each module containing its own catalyst bed. This segmentation allows the hydrocarbon charge to be distributed across multiple parallel flow paths, reducing the flow rate through each individual module and preventing catalyst blocking while maintaining high overall productivity.
Solution Approach 2:
The invention transitions from a single large radial bed to multiple smaller radial modules arranged in a radial pattern around the central manifold. This dimensional reorganization allows simultaneous processing of multiple streams, effectively increasing productivity without increasing the flow rate through any single catalyst bed, thereby avoiding the pinning phenomenon.
2Productivity
If the catalyst bed thickness is increased to improve reaction efficiency, then the reaction efficiency improves, but the pressure drop increases
Solution Approach 1:
The total catalyst volume is distributed across multiple thin catalytic beds in separate modules rather than one thick bed. Each module contains a catalyst bed with thickness optimized to maintain low pressure drop while providing sufficient reaction efficiency. The parallel arrangement of multiple modules compensates for the reduced thickness of individual beds.
3Reliability
If the hydrocarbon charge flow rate is limited to avoid catalyst blocking, then catalyst blocking is prevented, but the productivity remains low
Solution Approach 1:
The reactor system segments the hydrocarbon charge flow into multiple parallel streams, each passing through separate catalytic modules. This allows the total productivity to be increased by processing multiple streams simultaneously while each individual stream maintains a low enough flow rate to prevent catalyst blocking and maintain reliable catalyst flow.
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 design achieves significantly higher productivity rates, exceeding 50 h^-1, while maintaining reactor efficiency and preventing catalyst deactivation, facilitating continuous operation and easier maintenance.
Implementation Method 1
catalytic reforming reactions aimed at converting paraffinic C7-C10 and naphthenic C7-C10 compounds into aromatic compounds
Implementation Method 2
the gravity flow of catalyst grains ceases
Data Source
Figure 1
Figure 2a~2b
Figure 3~4
AI summary
Catalytic reactor (10) with radial flow of a hydrocarbon-based feedstock to be treated, comprising: - a reaction zone (13) enclosed in a substantially cylindrical external shell (14) which is in the form of at least one catalytic module (15) extending along a vertical axis (AX), - an annular zone (30) located at the same level as said catalytic modulus (15), outside the reaction zone (13), said catalytic reactor being characterized in that it comprises an empty space (27) located between two side walls (23, 24) of at least one catalytic module (15), located outside the reaction zone (13) and opening onto said annular zone (30), wherein said empty space (27) comprises at least one solid web (26) extending along the vertical axis (AX) and positioned adjacent to the collecting means (29).