# Capturing Carbon Dioxide While Making Industrial Materials > This patent describes a system and method for capturing carbon dioxide released during industrial processes like making cement or steel, while also producing useful materials and recovering energy. - **Patent:** US 20220203297 - **Original title:** Systems and methods for carbon capture - **Owner:** 8 Rivers Capital - **Status:** Active - **Times cited:** 6 - **Field:** energy, materials, environmental, chemical, industrial_manufacturing ## What it does The patent outlines a system for capturing carbon dioxide (CO2) from processes that heat carbonate-containing raw materials, such as limestone. A reactor heats the raw material with an oxidant, creating a decomposition stream of solids and CO2 gas (Claim 1). A separator then splits this stream into a gas stream (with CO2) and a solids stream. A heat exchange unit cools these streams, recovering energy. Finally, a CO2 separation unit purifies the cooled gas, creating a CO2-rich stream for capture and a CO2-lean stream. For example, this system can be integrated with a cement plant to capture CO2 released during clinker production (Claim 13) or with a steel-making plant (Claim 16). ## What it does NOT cover - Does not cover carbon capture methods that do not involve heating a carbonate-containing raw material (calcination). - Does not cover systems that capture CO2 from sources other than the decomposition stream, such as general combustion flue gases not from calcination. - Does not cover systems that lack a dedicated heat exchange unit to cool the gas and solids streams for energy recovery. - Does not cover systems where the CO2 is not separated into distinct 'lean' and 'rich' streams. - Does not cover carbon capture processes that are not integrated with the production of industrially useful materials or power generation as described. ## The clever bit The novelty lies in tightly integrating carbon capture with the production of industrially useful materials, like cement clinker, and simultaneously recovering heat for power generation. This combined approach aims to make carbon capture more efficient and cost-effective by leveraging existing industrial processes and energy streams. ## Real-world examples 1. Cement manufacturing plants 2. Steel production facilities 3. Lime production facilities 4. Power generation plants using carbonate-containing fuels ## Why it matters Industrial processes like cement and steel production are major sources of carbon dioxide emissions. This patent provides a way to integrate carbon capture directly into these processes, potentially making them more environmentally friendly. By recovering heat and producing useful materials alongside CO2 capture, it aims to make decarbonization more economically viable for heavy industry. ## Frequently asked questions ### What does Capturing Carbon Dioxide While Making Industrial Materials cover? This patent describes a system and method for capturing carbon dioxide released during industrial processes like making cement or steel, while also producing useful materials and recovering energy. ### Who owns patent US 20220203297? This patent is owned by 8 Rivers Capital. ### When does this patent expire? This patent is expected to expire on March 17, 2042, when the invention enters the public domain. ### What is patent US 20220203297 cited by? This patent has been cited by 6 later patents that build on its ideas. ### What problem does this patent solve? Industrial processes like cement and steel production are major sources of carbon dioxide emissions. This patent provides a way to integrate carbon capture directly into these processes, potentially making them more environmentally friendly. By recovering heat and producing useful materials alongside CO2 capture, it aims to make decarbonization more economically viable for heavy industry. ### What does this patent NOT cover? Does not cover carbon capture methods that do not involve heating a carbonate-containing raw material (calcination). **Full plain-English explainer:** https://patentbrief.org/patent/us/20220203297/systems-and-methods-for-carbon-capture **Original patent:** https://patents.google.com/patent/US20220203297 --- _Source: PatentBrief — https://patentbrief.org. Patent facts are from public records; the plain-English explanation is PatentBrief's._ ## Related patents Semantically similar inventions in the PatentBrief corpus: - [Making Iron More Efficiently and Generating Power with Oxygen](https://patentbrief.org/patent/us/8133298/blast-furnace-iron-production-with-integrated-power-generation) — This patent describes an integrated system that uses extra oxygen in a blast furnace to make iron more efficiently, while also capturing the furnace's waste gases to generate electricity and reduce carbon dioxide emissions. - [Two-Layer Membrane with Tiny, Ordered Pores for Carbon Capture](https://patentbrief.org/patent/us/11325075/carbon-capture-membrane) — This patent describes a two-layer filter, called a mixed matrix membrane, that uses a support layer with precisely arranged, uniform tiny holes and a carbon dioxide capture layer to trap CO2. - [Capturing Carbon Dioxide While Making Electricity with Hydrogen and Solar](https://patentbrief.org/patent/us/12327854/apparatuses-and-methods-for-carbon-dioxide-capturing-and-electrical-energy-produ) — This patent describes an integrated system that captures carbon dioxide from the air or industrial exhaust while simultaneously generating clean electricity using a hydrogen gas turbine powered by solar-generated hydrogen and oxygen, all without burning fossil fuels. - [How to Capture Carbon Dioxide from Air or Smoke Using Seawater](https://patentbrief.org/patent/us/11648507/process-and-apparatus-of-ocean-carbon-capture-and-storage) — This patent describes a system that uses natural seawater to wash carbon dioxide out of industrial smoke or the air, then stores it safely in the ocean, aiming for an affordable, green way to fight climate change. - [Making Chemicals from Carbon Dioxide and Steam Using Electricity](https://patentbrief.org/patent/us/20110132770/process-for-producing-compounds-of-the-cxhyoz-type-by-reduction-of-carbon-dioxid) — This patent describes a process that uses electricity to split steam and then reacts the resulting hydrogen with carbon dioxide or carbon monoxide to create various carbon-based compounds, like fuels or plastics.