Carbon Composite Screen Liquid Distributor for Mass Transfer Columns
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Solution Overview
Problem
Existing liquid distributors for mass transfer columns, particularly in packing columns, face challenges with wettability, chemical resistance, mechanical stability, and cost-efficiency, especially when forming a uniform and thin liquid film, especially at low liquid loadings, due to the use of heavy and expensive metal materials like titanium, tantalum, or zirconia.
Innovation Solution
A liquid distributor with a screen made partially or entirely of carbon composite materials, such as carbon fiber reinforced carbon, which enhances wettability, chemical resistance, and mechanical stability, allowing for complex shapes and reduced costs, enabling uniform liquid distribution onto packing surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If metal materials (titanium, tantalum, zirconia) are used for screens, then chemical resistance and mechanical stability are improved, but weight and cost increase
Solution Approach 1:
The patent applies composite materials by combining carbon fiber reinforcement with a polymer matrix to create screens that maintain mechanical stability and chemical resistance while significantly reducing weight compared to solid metal screens. The composite structure provides both structural integrity and functional performance.
Solution Approach 2:
The patent utilizes porous carbon composite materials with controlled porosity to achieve the desired balance between mechanical strength and weight. The porous structure reduces material density while maintaining sufficient structural support for screen functionality in liquid distribution applications.
2Strength
If metal materials (titanium, tantalum, zirconia) are used for screens, then mechanical stability is improved, but cost increases
Solution Approach 1:
The patent employs carbon fiber reinforced composite materials that provide adequate mechanical stability at lower cost compared to exotic metals like tantalum and zirconia. The composite material offers a cost-effective alternative while maintaining the structural requirements for screen operation.
Solution Approach 2:
The patent optimizes the mechanical properties of the carbon composite by adjusting parameters such as fiber orientation, resin matrix composition, and curing conditions to achieve the required mechanical stability at reduced manufacturing cost compared to metal screens.
3Reliability
If metal screens are used, then chemical resistance is improved, but wettability deteriorates
Solution Approach 1:
The patent uses carbon fiber reinforced polymer composites that inherently provide better wettability characteristics compared to metal surfaces. The composite material surface properties facilitate improved liquid distribution and film formation while maintaining corrosion resistance through the chemical inertness of the carbon and polymer components.
4Adaptability or versatility
If complex shapes are implemented for screen optimization, then functionality is improved, but manufacturing difficulty increases
Solution Approach 1:
The patent leverages the formability of carbon fiber reinforced composites to create complex three-dimensional screen shapes that optimize liquid distribution patterns. These composite materials can be molded into intricate geometries more easily than metals, allowing functional optimization without proportionally increasing manufacturing difficulty.
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 carbon composite material improves wettability and corrosion resistance, forming broad and smooth liquid films even at low liquid loadings, optimizing liquid distribution and reducing costs and weight, while allowing for complex shapes that enhance the screen's functionality.
Implementation Method 1
the wettability of these materials is not excellent, so it is difficult, if not impossible to form a broad and smooth liquid film on screens made of such materials
Data Source
AI summary
A liquid distributor for a separation device, such as for a mass transfer column for a packing column for absorption, stripping, scrubbing or distillation. The liquid distributor includes at least one distributor member having two or more outlet openings for an outflow of liquid in the form of jets, and the liquid distributor further includes at least one screen which is arranged in front of the outlet openings so that liquid jets outflowing through the outlet openings of the distributor member impinge onto the surface of the at least one screen and are deformed thereon to thin flowing liquid films. At least one of the at least one screen is made at least partially of a carbon composite material.