Sorption Module Flow Homogenization for Uniform CO2 Bed Loading
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Solution Overview
Problem
Existing systems for separating carbon dioxide from ambient air face challenges such as sorbent degradation, high energy consumption, and inefficiencies due to varying ambient conditions, particularly when using amine-based chemisorbents and zeolites, and require laborious and expensive measures to manage oxygen and humidity.
Innovation Solution
A sorption module with a cylindrical housing, sorbent beds, and flow deflectors that ensure uniform gas flow and efficient adsorption/desorption, minimizing energy use and preventing premature saturation of sorbent beds, using renewable energy sources like wind and solar power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If amine-based chemisorbents are used to separate carbon dioxide, then separation efficiency is improved, but sorbent degradation occurs due to aging when exposed to oxygen at temperatures above 60°C
Solution Approach 1:
The system divides the sorption process into multiple beds that can operate in parallel, with some beds undergoing adsorption while others undergo desorption. This segmentation allows the sorbent to be regenerated periodically without interrupting the overall carbon dioxide separation process, thereby maintaining both high separation efficiency and sorbent stability over time.
Solution Approach 2:
The system performs preliminary drying of the ambient air before it enters the adsorption bed, removing excess moisture that would otherwise compete with carbon dioxide for sorbent binding sites. This preliminary action prevents premature saturation of the sorbent and extends its effective operational life, maintaining reliability while preserving separation efficiency.
2Productivity
If physisorbents such as zeolites are used to separate carbon dioxide, then separation capability is improved, but the sorbent requires preliminary drying of ambient air due to higher affinity for water vapor
Solution Approach 1:
A drying unit is integrated into the system to remove excess moisture from ambient air before it reaches the zeolite adsorption bed. This preliminary drying action prevents the zeolite from preferentially adsorbing water vapor, ensuring that carbon dioxide separation capability is maintained without requiring overly complex drying systems.
Solution Approach 2:
The system optimizes operational parameters such as temperature, pressure, and flow rate to balance the competing affinities of zeolite for both water vapor and carbon dioxide. By carefully controlling these parameters, the system achieves effective carbon dioxide separation while minimizing the complexity of the drying system required.
3Productivity
If ambient air is dried before adsorption to improve carbon dioxide separation, then adsorption efficiency is improved, but energy consumption and system complexity increase
Solution Approach 1:
The drying unit performs preliminary moisture removal at a controlled level that is sufficient to prevent sorbent saturation by water vapor but does not require excessive energy input. This optimized preliminary action achieves the necessary adsorption efficiency while minimizing energy consumption compared to complete drying.
Solution Approach 2:
The system adjusts drying parameters such as temperature, residence time, and drying agent selection to achieve the minimum necessary drying level for optimal carbon dioxide adsorption. By optimizing these parameters, the system balances adsorption efficiency improvements against the increasing energy consumption and system complexity that would result from more aggressive drying.
4Productivity
If complete and homogeneous gas flow through sorbent material is achieved to improve carbon dioxide adsorption, then separation efficiency is improved, but the system requires optimized flow distribution that increases device complexity
Solution Approach 1:
The system incorporates flow distribution elements such as distributors or structured support materials at the inlet of each adsorption bed to create locally optimized flow patterns. These local quality improvements ensure homogeneous gas flow through the sorbent material, maximizing carbon dioxide adsorption efficiency without requiring complex system-wide flow control 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
Enhances the efficiency of carbon dioxide separation by uniformly loading sorbent beds, reducing energy requirements, and optimizing flow resistance, while utilizing renewable energy sources.
Implementation Method 1
carbon dioxide is adsorbed in the sorbent material of the sorbent beds
Implementation Method 2
the carbon dioxide is desorbed
Data Source
AI summary
The disclosure relates to a sorption module for sorption of carbon dioxide from the ambient air. The sorption module comprises a housing with at least one inlet opening and at least one outlet opening, a sorbent bed support arranged in the housing, which supports a plurality of sorbent beds filled with a sorbent material, and closure flaps for closing the at least one inlet opening and the at least one outlet opening in the housing of the sorption module. The closure flap is configured to homogenize the flow to the different sorbent beds in the sorption module.