Floating Particle Catcher for Catalytic Reactor
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Solution Overview
Problem
Catalytic chemical reactors face challenges with particle impurities in inlet fluid streams, leading to clogging and operational inefficiencies, particularly in processes like naphtha hydrotreating and FCC regenerators, where existing solutions require structural modifications that weaken the reactor or are costly and complex to install.
Innovation Solution
A catalytic chemical reactor with a floating particle catcher unit that uses an S-shaped flow path to trap particles above the catalyst bed, supported by the catalyst bed itself, allowing for easy installation and maintenance without structural modifications, utilizing a screen with apertures to ensure gas flow while preventing catalyst pellets from entering the catcher unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a particle separator is installed as an independent unit operation prior to sensitive equipment, then particles can be removed from the fluid stream, but the installation becomes complex and requires structural modifications to the reactor
Solution Approach 1:
The particle separator is merged with the catalyst support structure, combining two functions (particle separation and catalyst support) into a single integrated component. This eliminates the need for separate support structures and simplifies installation while maintaining effective particle removal capability.
Solution Approach 2:
The support structure serves multiple functions: it provides mechanical support for the catalyst bed, acts as a particle separator with screening surfaces, and facilitates fluid distribution. This multi-functionality reduces the number of separate components needed and simplifies the overall reactor design.
2Reliability
If particle separation equipment is installed independently before sensitive equipment, then particles are removed, but the equipment requires welding or drilling that weakens the reactor structure
Solution Approach 1:
The particle separator is integrated into the catalyst support structure rather than being installed as a separate component requiring welding or drilling. This merging approach maintains reactor structure integrity while achieving effective particle separation through the screening surfaces of the support structure.
3Reliability
If a particle separator is installed within the reactor, then particles are removed, but the installation and maintenance become difficult without easy access
Solution Approach 1:
The catalyst support structure is divided into multiple modular layers that can be independently accessed and maintained. Each layer contains screening surfaces for particle separation, and the modular design allows for easy removal, inspection, and replacement of individual layers through standard reactor access points.
4Ease of operation
If the catalyst bed is used to support the particle separator, then installation is simplified without additional support structures, but the particle separator must be designed to float or rest on the catalyst
Solution Approach 1:
The support function and particle separation function are merged into a single integrated structure. The catalyst support layers inherently provide the screening function through their porous or mesh structure, eliminating the need for separate floating support mechanisms while simplifying installation.
Solution Approach 2:
The catalyst support structure serves itself by providing both mechanical support and particle separation functions. The inherent structure of the support layers (porous plates, mesh screens, or packed beds) automatically performs particle separation without requiring additional floating or support mechanisms.
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 solution enables prolonged effective operation of catalytic chemical reactors by effectively removing particles and impurities without weakening the reactor structure, facilitating easy installation and service, and ensuring uninterrupted gas flow to the catalyst bed.
Implementation Method 1
A catalytic chemical reactor with a floating particle catcher unit which uses an S-shaped flow path to trap particles above the catalyst bed
Implementation Method 2
trap particles above the catalyst bed
Implementation Method 3
utilizing a screen with apertures to ensure gas flow while preventing catalyst pellets from entering the catcher unit
Data Source
AI summary
A catalytic reactor comprises a floating particle catcher unit and a particle catching surface which extracts particles from the fluid flow stream above the catalyst bed whereby at least a part of the particles settles on the particle catching surface instead of clogging the catalyst bed.