Central Liquid Collector for Reactive Distillation Flooding
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Solution Overview
Problem
Existing reactive distillation columns face challenges in accommodating large variations in liquid flow rates, leading to flooding of the catalytic zone and reduced operational efficiency, particularly during overcapacity operations.
Innovation Solution
The implementation of a central liquid collector with a cylindrical and tubular portion that distributes liquid upstream of the catalytic zone, combined with a dedicated peripheral zone for gas bypass and optional vent systems for liquid evacuation, allowing for flexible liquid flow management and preventing flooding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional liquid distribution system is used in the catalytic zone, then the structure is simple, but the system cannot accommodate large variations in liquid flow rate without flooding the catalytic zone
Solution Approach 1:
The liquid distribution system is segmented into multiple functional zones: a central collection zone for receiving liquid from above, intermediate distribution channels, and peripheral distribution points at the catalytic zone inlet. This segmentation allows liquid to be collected centrally and distributed systematically, accommodating variable flow rates without flooding any single area.
Solution Approach 2:
The invention transitions from a simple planar distribution approach to a three-dimensional distribution architecture with vertical layering. Liquid is collected from the upper surface, distributed through intermediate channels at different elevations, and delivered to the catalytic zone inlet, creating a multi-level distribution pathway that handles flow variations effectively.
2Productivity
If the liquid flow rate is increased to handle overcapacity operations, then productivity increases, but the catalytic zone floods and operational efficiency decreases
Solution Approach 1:
The system performs preliminary liquid collection and distribution before liquid enters the catalytic zone. The central collection zone and intermediate distribution channels pre-position liquid at controlled rates, preventing sudden flooding when high flow rates occur during overcapacity operations, thus maintaining catalytic zone integrity and operational efficiency.
Solution Approach 2:
The invention introduces intermediate distribution channels as mediator elements between the liquid source and the catalytic zone. These channels act as buffer zones that regulate and distribute liquid flow, preventing direct flooding of the catalytic zone while handling elevated flow rates during overcapacity operations.
3Adaptability or versatility
If a central liquid collector is added upstream of the catalytic zone, then liquid flow variation accommodation improves, but the device complexity increases
Solution Approach 1:
The central liquid collector is merged with the existing contact means structure rather than being a completely separate addition. The collector integrates with the distribution channels and catalytic zone inlet structure, combining multiple functions (collection, distribution, and flow regulation) into a unified system that manages complexity while improving adaptability.
Data Source
AI summary
The present invention describes a device for supplying the catalytic zone of a reactive distillation column using a liquid stream as the reaction stream, the flow of liquid in the reactive zone being of the upflow type and gas not encountering the liquid in the reactive zone.