Method and apparatus for sustainable carbon dioxide sequestration
US-2024424442-A1 · Dec 26, 2024 · US
Method of inhibiting nitrosation of an aqueous amine solution used in a process of removing carbon dioxide from a flue gas
US9675928B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9675928-B2 |
| Application number | US-201514628728-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 23, 2015 |
| Priority date | Feb 25, 2014 |
| Publication date | Jun 13, 2017 |
| Grant date | Jun 13, 2017 |
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Abstract
Official abstract text for this publication.
A method is provided for inhibiting nitrosation of an aqueous amine solution used in a process of removing carbon dioxide from a flue gas. That method includes a step of adding an effective amount of an antioxidant to the aqueous amine solution being circulated between an absorber and a stripper of a carbon dioxide capture system.
First claim
Opening claim text (preview).
What is claimed: 1. A method of inhibiting nitrosation of an aqueous amine solution used in a process of removing carbon dioxide from a flue gas, comprising: adding an effective amount of an antioxidant to the aqueous amine solution being circulated between an absorber and a stripper of a carbon dioxide capture system whereby carbon dioxide is removed from flue gas and formation of undesirable nitrosamines and nitramines is inhibited, wherein the antioxidant is selected from the group consisting of vanillin, vitamin D, erythorbic acid, triphenylmethylmercaptan, 2-mercapto 1-methyl benzimidazole and 2,5-dimercapto 1,3,5-thiodiazole. 2. The method of claim 1 , including maintaining said antioxidant at a concentration of between about 0.01 mM to about 1,000 mM in said aqueous amine solution. 3. The method of claim 1 , including maintaining said antioxidant at a concentration of between about 0.1 mM to about 100 mM in said aqueous amine solution. 4. The method of claim 1 , wherein said antioxidant includes a is vanillin. 5. The method of claim 1 , wherein said antioxidant is vitamin D. 6. The method of claim 1 , wherein said antioxidant is erythorbic acid. 7. The method of claim 1 , wherein said antioxidant is triphenylmethylmercaptan. 8. The method of claim 1 , wherein said antioxidant is 2-mercapto 1-methyl benzimidazole. 9. The method of claim 1 , wherein said antioxidant is 2,5-dimercapto 1,3,5-thiodiazole.
Assignees
Inventors
Classifications
- B01D53/1493Primary
Selection of liquid materials for use as absorbents · CPC title
Cross-Sectional Technologies · mapped topic
Amines · CPC title
Cross-Sectional Technologies · mapped topic
Stabilisers or agents inhibiting degradation · CPC title
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Frequently asked questions
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- What does patent US9675928B2 cover?
- A method is provided for inhibiting nitrosation of an aqueous amine solution used in a process of removing carbon dioxide from a flue gas. That method includes a step of adding an effective amount of an antioxidant to the aqueous amine solution being circulated between an absorber and a stripper of a carbon dioxide capture system.
- Who is the assignee on this patent?
- Univ Kentucky Res Found, The Univ Of Kentucky Res Found
- What technology area does this patent fall under?
- Primary CPC classification B01D53/1493. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jun 13 2017 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).