Upflow Reactor Pressing Device for Catalyst Dust Control
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Solution Overview
Problem
Existing upflow reactors face issues with catalyst dust generation, leading to clogging and rapid pressure drops, which shorten their operational period due to the expansion and contraction of the catalyst bed layer under fluctuating flow rates and pressures.
Innovation Solution
An upflow reactor design featuring a movable pressing device that maintains constant pressure on the catalyst bed layer, reducing abrasion and dust generation, combined with a filtering device and dust removal system to manage catalyst dust and maintain stable pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fixed bed-type upflow reactor is used to treat oil products, then the hydrogenation process can be performed, but catalyst dust is generated which causes clogging and rapid pressure drop
Solution Approach 1:
The patent applies a movable pressing device that can dynamically adjust its position and pressing force on the catalyst bed layer. This dynamic mechanism allows the system to adapt to varying operating conditions, maintaining optimal pressure on the catalyst bed to prevent dust generation while ensuring efficient hydrogenation process continues uninterrupted
Solution Approach 2:
The patent introduces a pressing device as an intermediary component between the catalyst bed layer and the reactor walls. This intermediary structure exerts controlled pressure on the catalyst bed to minimize dust generation, while also including a dust removal system that acts as another intermediary to capture and remove any generated dust particles, thus preventing clogging
2Loss of substance
If the catalyst bed layer is pressed to reduce dust generation, then abrasion decreases, but the structure becomes more complex
Solution Approach 1:
The pressing device is designed with movable components that can adjust their position and applying force dynamically. This dynamic structure allows the system to maintain optimal pressure on the catalyst bed layer to minimize dust generation, while the ability to adjust prevents excessive complexity by allowing operation under varying conditions without requiring an overly rigid and complex fixed structure
Solution Approach 2:
The pressing device incorporates elastic members that can automatically adjust and maintain appropriate pressure on the catalyst bed layer without requiring complex external control systems. The elastic members self-regulate based on the bed layer's state, reducing the need for additional complex control mechanisms while still achieving effective dust prevention
3Productivity
If flow rate and pressure fluctuate during operation, then reaction efficiency varies, but catalyst bed layer expands and contracts causing abrasion and dust
Solution Approach 1:
The pressing device is designed with movable components that can dynamically adjust their position and pressing force in response to fluctuations in flow rate and pressure. This dynamic adjustment allows the system to maintain optimal pressure on the catalyst bed layer despite varying operating conditions, preventing bed layer expansion and contraction that would cause abrasion and dust generation while still allowing reaction efficiency to vary with flow conditions
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 significantly reduces catalyst dust generation, prevents clogging, and prolongs the operational period of the reactor by minimizing abrasion and maintaining stable pressure drops.
Implementation Method 1
a pressing device arranged in the reaction chamber and located above the catalyst bed layer, wherein at least a part of the pressing device is arranged to be movable up and down, so that the at least a part of the pressing device can be pressed against the catalyst bed layer
Implementation Method 2
If an upflow reactor is used, the gas-liquid parallel flow move upward in the reaction process so as to cause expansion of the catalyst bed layer, thus the void fraction of the catalyst bed layer can be increased and the clogging of the catalyst bed layer can be avoided
Data Source
AI summary
An upflow reactor (1), includes a housing (20), a catalyst bed layer (30) and a pressing device (10). The housing (20) is internally provided with a reaction chamber (210), a reaction material inlet (220) and a reaction material outlet (230) which are in communication with the reaction chamber (210) are provided on the housing (20). The catalyst bed layer (30) is provided within the reaction chamber (210), the pressing device (10) is provided within the reaction chamber (210) and located above the catalyst bed layer (30). At least a part of the pressing device (10) is movable up and down so that the at least a part of the pressing device (10) can be pressed against the catalyst bed layer (30).