The Chimney for CO2 Direct Air Capture – Enhanced Airflow for Capture

Background

The removal of CO2 from the atmosphere through direct air capture (DAC) can help to stabilize the planet’s climate. There is a need for large-scale negative emission systems as more CO2 will need to be captured and stored in the future. There are existing DAC systems for carbon capture using airflow, which can use large fans to bring the CO2 to the sorbents, or passively take advantage of the natural airflow. However, the current capture cost of DAC is expensive due to operational expenses.

Invention Description

Researchers at Arizona State University have developed The Chimney, a direct air capture (DAC) device with an enhanced airflow and liquid/gas-heat harvest mechanism. This device works using a “chimney” design to apply enhanced airflow across the capture sorbents. This device can acknowledge and adjust for shape, location, and supporting structures, depending on the application. This technology requires less energy and is less expensive than traditional DAC technologies, while providing efficient carbon capture capabilities. This device has the ability for solar photovoltaic electric panels to be incorporated, providing a sustainable energy source for the carbon capture process.

Potential Applications

• Direct air capture (DAC) of carbon dioxide:
  • Remote locations
  • Underground/above ground combination
  • Parabolic shape
  • Combination with solar heating

Benefits and Advantages

• Increased airflow compared to current DAC technology
• Less energy required for operation
• Can operate with multiple sorbents depending on application
• Scalable for mass production
• Requires minimal maintenance
• Automated operation, reducing operational costs