Adsorption Reactor Assembly with Upstream Thermal Conditioning
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Solution Overview
Problem
Existing direct air capture (DAC) processes face challenges in efficiently operating at varying ambient temperatures and in locations with adverse environmental conditions, such as icing risks and reduced efficiency due to high or low temperatures, and require large air volumes, which can lead to system inefficiencies and clogging.
Innovation Solution
A reactor assembly with a gas mixture treatment device that includes a heat exchanger for temperature control and an electrostatic separator to manage ambient conditions, ensuring efficient operation across temperature ranges and removing particles, thereby decoupling the adsorption process from ambient conditions and maintaining optimal performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If large volumes of ambient air are passed through the capture system to extract CO2, then the CO2 extraction amount increases, but the system becomes more susceptible to temperature-related issues such as icing and reduced adsorption efficiency
Solution Approach 1:
The patent applies preliminary action by introducing a pre-treatment stage before the main adsorption process. A heat exchanger is used to pre-heat or pre-cool the ambient air to optimal temperature ranges (above 0°C to prevent icing, and within 20-40°C for efficient adsorption) before the air enters the adsorption bed. This preliminary temperature adjustment ensures that the subsequent CO2 extraction process operates reliably without temperature-related failures.
2Adaptability or versatility
If ambient air at low temperatures (below 0°C) is used for CO2 capture, then the system can operate in cold environments, but icing of the separator occurs
Solution Approach 1:
The patent uses a heat exchanger as an intermediary device between the cold ambient air and the adsorption system. The heat exchanger transfers thermal energy from the ambient air to a heating medium (or from a cooling medium to the ambient air), serving as a buffer that prevents the ambient air temperature from directly affecting the adsorption bed temperature. This intermediary mechanism allows the system to operate in cold environments while maintaining the adsorption bed above icing temperatures.
3Adaptability or versatility
If ambient air at high temperatures (above 30°C) is used for CO2 capture, then the system can operate in hot environments, but the adsorption efficiency decreases
Solution Approach 1:
The patent applies preliminary action by using a heat exchanger to pre-cool hot ambient air before it enters the adsorption bed. The heat exchanger removes excess thermal energy from the ambient air, bringing its temperature within the optimal adsorption range (20-40°C). This preliminary cooling action ensures that high-temperature ambient conditions do not degrade the adsorption efficiency, allowing the system to maintain high productivity even in hot environments.
4Device complexity
If particles in the ambient air are not removed, then the system structure remains simple, but the adsorber structure becomes clogged and service life is reduced
Solution Approach 1:
The patent applies preliminary action by incorporating a particle filtration stage before the adsorption process. A filter is used to remove particles from the ambient air in advance, preventing them from entering and clogging the adsorber structure. This preliminary particle removal extends the service life of the adsorber by preventing contaminant accumulation, while adding only a simple filtration component to the overall system.
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 solution ensures consistent operation of DAC reactors by maintaining optimal temperature ranges and effectively removing particles, enhancing efficiency and extending service life, even in harsh environments like deserts or offshore locations.
Implementation Method 1
the heat exchanger has a heat transfer surface for transmitting heat from the heating/cooling circuit to the gas mixture and vice versa
Implementation Method 2
an adsorber structure for capturing the gaseous components from the gas mixture
Implementation Method 3
a device for treating the gas mixture before entering the reactor which includes an electrostatic separator for removing particles from the gas mixture
Data Source
Figure 1
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Figure 3
AI summary
A reactor assembly (2) comprises a reactor (14) for separating gaseous components from a gas mixture in an adsorption mode. The reactor (14) comprises a housing (15) having an inlet portion (16) and an outlet portion (17). The reactor (14) further comprises an adsorber structure (18) for capturing the gaseous components from the gas mixture. The adsorber structure (18) is positioned in the housing (15) between the inlet portion (16) and the outlet portion (17). The reactor (14) further comprises a blower (19) for drawing the gas mixture from the inlet portion (16) through the adsorber structure (18) towards the outlet portion (17). The reactor assembly (2) further comprises a gas mixture treatment device (10) for treating the gas mixture before entering the inlet portion (17). The gas mixture treatment device (10) is arranged upstream of the inlet portion (16) in flow direction of the gas mixture. The gas mixture treatment device includes a heat exchanger (20) for heating and/or cooling the gas mixture. The heat exchanger (20) is connected to a heating/cooling circuit (21). The heat exchanger (20) has a heat transfer surface (22) for transmitting heat from the heating/cooling circuit (21) to the gas mixture and vice versa.