Contaminent removal system using separate liquid sorbent loops
US-2024359132-A1 · Oct 31, 2024 · US
Carbon dioxide fixation method
US12186704B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12186704-B2 |
| Application number | US-201917429966-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 2, 2019 |
| Priority date | Feb 14, 2019 |
| Publication date | Jan 7, 2025 |
| Grant date | Jan 7, 2025 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Provided is a simple and low-cost method for efficiently fixing a sufficient amount of carbon dioxide contained in a carbon dioxide-containing gas (e.g. a plant exhaust gas). The method of fixing carbon dioxide comprises a contact step of bringing a carbon dioxide-containing gas having a temperature of 350° C. or more into contact with a cementitious hardened body to fix carbon dioxide in the carbon dioxide-containing gas to the cementitious hardened body. The carbon dioxide-containing gas may be a gas that is free from being supplied with moisture before the contact step and during the contact step. One of examples of the carbon dioxide-containing gas is a plant exhaust gas.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method of fixing carbon dioxide, comprising a contact step of bringing a carbon dioxide-containing gas having a temperature of from 400° C. to 500° C. into contact with a cementitious hardened body to fix carbon dioxide in the carbon dioxide-containing gas to the cementitious hardened body, wherein moisture is not supplied to the carbon dioxide-containing gas before the contact step and during the contact step, during the contact step, the carbon dioxide-containing gas comprises a carbon dioxide gas at a ratio of 25% or more as a volume fraction value, and the cementitious hardened body has a form of grain having a grain size of 2 mm to 50 mm. 2. The method of fixing carbon dioxide according to claim 1 , wherein the carbon dioxide-containing gas is a plant exhaust gas. 3. The method of fixing carbon dioxide according to claim 1 , wherein the cementitious hardened body is a recycled aggregate, a waste material of a building material formed of concrete or mortar, a waste material of a cement paste hardened body, or sludge produced in using ready-mixed concrete. 4. The method of fixing carbon dioxide according to claim 1 , wherein the carbon dioxide-containing gas has a ratio of water vapor of 0% as a volume fraction value. 5. The method of fixing carbon dioxide according to claim 1 , wherein the cementitious hardened body has a carbonation ratio of from 6% to 12% after contacting the carbon dioxide-containing gas for 60 minutes.
Assignees
Inventors
Classifications
from cement factories · CPC title
Carbon dioxide · CPC title
Solid phase processes · CPC title
- B01D53/1475Primary
Removing carbon dioxide · CPC title
of CO2 · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12186704B2 cover?
- Provided is a simple and low-cost method for efficiently fixing a sufficient amount of carbon dioxide contained in a carbon dioxide-containing gas (e.g. a plant exhaust gas). The method of fixing carbon dioxide comprises a contact step of bringing a carbon dioxide-containing gas having a temperature of 350° C. or more into contact with a cementitious hardened body to fix carbon dioxide in the c…
- Who is the assignee on this patent?
- Taiheiyo Cement Corp, Univ Tokyo
- What technology area does this patent fall under?
- Primary CPC classification B01D53/1475. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 07 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).