Passive CO2 Absorption Tower Using Natural Pressure Gradients
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Solution Overview
Problem
Current Direct Air Capture (DAC) systems face challenges in efficiency and energy consumption due to the reliance on fans and complex mechanical designs, which hinder their scalability and maintenance-free operation.
Innovation Solution
The development of a process and device for CO2 absorption using a liquid absorbent, leveraging natural atmospheric pressure differences to facilitate CO2 capture without the need for fans, and employing dynamic control algorithms to optimize absorption conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If fans and mechanical conveying devices are used to force exhaust gas through the absorption process, then CO2 capture efficiency is improved, but energy consumption increases
Solution Approach 1:
The system utilizes natural atmospheric pressure differences and wind-driven air movement to force atmospheric gas through the absorption device, eliminating the need for external fans or mechanical conveying devices. The device serves itself by harnessing environmental forces naturally present in the atmosphere, thereby achieving CO2 capture without additional energy input for gas movement.
Solution Approach 2:
The patent replaces mechanical conveying devices (fans, pumps) with a passive system that relies on natural atmospheric pressure gradients and wind flow. This substitution eliminates mechanical components that consume energy, transitioning from an active mechanical system to a passive atmospheric-driven system.
2Productivity
If complex mechanical designs with multiple components are used, then CO2 absorption capability is improved, but device complexity and maintenance needs increase
Solution Approach 1:
The patent extracts and removes all unnecessary mechanical components (fans, pumps, complex conveying systems) from the CO2 absorption device, retaining only the essential absorption functionality. By taking out superfluous mechanical elements, the design achieves simplicity while maintaining absorption capability through optimized liquid-gas contact structures.
Solution Approach 2:
The simplified device design relies on self-service principles where natural atmospheric forces perform the work of gas movement, eliminating the need for complex mechanical control systems, motors, and actuators. The structure serves itself by leveraging environmental conditions to achieve its primary function.
3Productivity
If centralized CO2 capture systems are used, then removal efficiency is improved, but scalability to decentralized sources is limited
Solution Approach 1:
The absorption device is designed with universal applicability to handle various CO2 emission scenarios. The same passive absorption technology can be deployed at centralized facilities (power plants, cement factories) as well as decentralized sources (individual buildings, small industrial units, mobile applications). The device's simplicity and reliance on natural forces make it adaptable across different scales and locations without requiring system redesign.
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 approach results in a more energy-efficient and flexible CO2 absorption process, capable of operating continuously and reducing energy consumption per mass unit of CO2 captured, while minimizing mechanical complexity and maintenance needs.
Implementation Method 1
the atmospheric gas penetrates the device according to the invention due to natural ambient conditions and thereby comes into contact with at least one planar non-dispersible liquid surface, wherein the planar non-dispersible liquid surface contains at least one substance suitable for absorbing CO2, such that the CO2 partial pressure immediately above the liquid surface is lower than the CO2 partial pressure of the penetrating atmospheric gas
Implementation Method 2
the atmospheric gas penetrates the device according to the invention due to natural ambient conditions and thereby comes into contact with at least one planar non-dispersible liquid surface
Data Source
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AI summary
Gas from the atmosphere enters an absorption device, open on at least two sides and containing at least one freely accessible homogeneous, planar, non-dispersible liquid surface, due to natural atmospheric conditions and without the use of additional energy. The liquid forming the liquid surface is suitable for absorbing carbon dioxide from the atmospheric gas. The present invention relates to a method, a procedure, and a device for absorbing carbon dioxide from the atmosphere.