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GoogleGranted patentBatteries & energyInterest 4/10

Google patents system using waste heat to pull CO2 from air

Patent drawing
Patent drawing from the official filing.

This patent describes a direct air capture system that uses waste heat from industrial processes and power plants to release carbon dioxide from a solid filter. The system combines this heat with electricity to separate the captured gas from the filter material.

Why it mattersIt offers a method to make carbon capture more efficient by reusing heat that would otherwise be wasted in industrial settings.

In the filing’s own words

Techniques for providing carbon dioxide include generating thermal energy, an exhaust fluid, and electrical power from a power plant; providing the exhaust fluid and the generated electrical power to an exhaust fluid scrubbing system to separate components of the exhaust fluid; capturing heat from a source of heat of an industrial process in a heating fluid; transferring the heat of the industrial process captured in the heating fluid to a carbon dioxide source material of a direct air capture (DAC) system; providing the generated electrical power from the power plant to the DAC system; providing the thermal energy from the power plant to the DAC system; and separating, with the transferred portion of the heat of the industrial process and the provided thermal energy, carbon dioxide from the carbon dioxide source material of the DAC system.

What exactly they claim (claim 1)

1. A direct air capture (DAC) system, comprising: an ambient airflow input through which ambient air enters the DAC system; a carbon dioxide output; a carbon dioxide source material disposed within an airflow path between the airflow input and the carbon dioxide output, the carbon dioxide source material comprising an adsorbent to which carbon dioxide from the ambient air bonds, wherein the adsorbent comprises a solid adsorbent; a circuit configured to flow the adsorbent with the circuit; and a heating system configured to heat a heating fluid and transfer heat from the heating fluid to the carbon dioxide source material, wherein the carbon dioxide source material is arranged to receive heat from the heating fluid, and wherein the heating system is configured to add thermal energy to the heating fluid, and wherein, when heated, adsorbed carbon dioxide is separated from the carbon dioxide source material and provided as a carbon dioxide output.

Facts

Company
Google (X Development LLC)
Official title
Producing carbon dioxide with waste heat
Patent number
US12767542B2
Application number
18948550
Filed
Nov 15, 2024
Granted
Oct 20, 2026
Inventors
4
Claims
20

Classified under

C01B 32/50 Chemistry & metalsB01D 53/62 Operations & transportF25J 3/0266 Mechanical engineering
Read the full filing (official PDF) ↗ Open in the Patent Tracker

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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.