Multiple Downcomer Tray Segmentation for Uniform Liquid Flow
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Solution Overview
Problem
Multiple downcomer trays in chemical production equipment experience inhomogeneous liquid flow, leading to inconsistent liquid-gas ratios and reduced efficiency due to diffusion and contraction flow patterns, which affect the overall operation capability and tray efficiency.
Innovation Solution
The introduction of anti-jump plates to divide the tray body into sections with parallel and perpendicular downcomer assemblies, ensuring consistent liquid flow directions and distances, and the use of bubbling units to enhance gas-liquid interaction, resulting in uniform gas-liquid distribution and improved tray efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple downcomer trays use diffusion flow or contraction flow patterns, then liquid treatment capacity is improved, but liquid flow becomes inhomogeneous and tray efficiency decreases
Solution Approach 1:
The tray body is divided into multiple sections by anti-jump plates, with each section having its own downcomer assembly. This segmentation creates independent flow paths that prevent the inhomogeneous diffusion and contraction flows, ensuring uniform liquid distribution across the tray while maintaining high liquid treatment capacity through multiple parallel downcomers.
2Productivity
If multiple downcomer trays use combined diffusion and contraction flow, then liquid treatment capacity increases, but liquid-gas ratio consistency deteriorates
Solution Approach 1:
The tray is segmented into multiple sections with anti-jump plates creating distinct flow zones. Each section has dedicated downcomer assemblies that provide independent, controlled liquid flow paths. This segmentation eliminates the unpredictable combined diffusion-contraction flow patterns, ensuring consistent liquid-gas ratios across the entire tray surface while maintaining high productivity through multiple parallel flow paths.
3Manufacturing precision
If overflow trays are used with parallel liquid flow, then flow direction consistency is improved, but liquid treatment capacity is limited
Solution Approach 1:
The invention merges the advantages of overflow trays (parallel flow direction consistency) with multiple downcomer configurations. The anti-jump plates create sections that maintain parallel flow patterns like overflow trays, while multiple downcomer assemblies in each section provide the high liquid treatment capacity. This combination achieves both flow direction consistency and high productivity simultaneously.
Data Source
AI summary
A multiple downcomer tray and a tray column comprising the same are provided. The multiple downcomer tray comprises: a tray body; at least one anti-jump plate disposed on the tray body to divide the tray body into at least two sections; and at least two downcomer assemblies disposed corresponding to the at least two sections respectively, in which each of the at least two downcomer assemblies comprises at least one tray floor, at least one downcomer and at least one liquid receiving pan which are disposed parallel to each other, and the liquid receiving pan and the downcomer are positioned at two sides of the tray floor respectively.