Molten hydroxide membrane for separation of acid gases from emissions
US-2020030741-A1 · Jan 30, 2020 · US
Molten hydroxide membrane for separation of acid gases from emissions
US11260343B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11260343-B2 |
| Application number | US-201916592532-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 3, 2019 |
| Priority date | May 19, 2016 |
| Publication date | Mar 1, 2022 |
| Grant date | Mar 1, 2022 |
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- Title
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Abstract
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In one embodiment, a method for separating acidic gases from a gas mixture includes exposing the gas mixture to a separation membrane at an elevated temperature, where the separation membrane includes a porous support and at least one molten alkali metal hydroxide disposed within pores of the porous support.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for separating acidic gases from a gas mixture, the method comprising: exposing the gas mixture to a separation membrane at an elevated temperature, wherein the separation membrane comprises a porous support and at least one molten alkali metal hydroxide disposed within pores of the porous support. 2. The method as recited in claim 1 , comprising reversibly solvating the acidic gases in the at least one molten alkali metal hydroxide at an inlet of the separation membrane. 3. The method as recited in claim 1 , comprising releasing solvated ions from an outlet of the separation membrane, the solvated ions being anionic forms of the acidic gases. 4. The method as recited in claim 1 , comprising applying a potential across the separation membrane. 5. The method as recited in claim 1 , comprising applying an alternating current (A/C) across the separation membrane. 6. The method as recited in claim 1 , comprising applying a pressure gradient across the separation membrane, wherein the pressure gradient is in a range from about 0 atmospheres to about 20 atmospheres. 7. The method as recited in claim 1 , wherein the elevated temperature is in a range from about 200 C to about 700 C. 8. The method as recited in claim 1 , wherein the acidic gases are gases having a formula selected from a group consisting of: CO x , NO y and SO z , wherein x is a value in a range from 1-2, y is a value in a range from 1-3, and z is a value in a range from 1-4. 9. The method as recited in claim 1 , comprising exposing the separation membrane to a sweep gas on a side of the separation membrane opposite a side to which the gas mixture is exposed, wherein the sweep gas comprises steam.
Assignees
Inventors
Classifications
Pore size · CPC title
Composite membranes; Ultra-thin membranes · CPC title
Silicon carbide; Silicon nitride; Silicon oxycarbide · CPC title
Inorganic support material · CPC title
Oxides · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US11260343B2 cover?
- In one embodiment, a method for separating acidic gases from a gas mixture includes exposing the gas mixture to a separation membrane at an elevated temperature, where the separation membrane includes a porous support and at least one molten alkali metal hydroxide disposed within pores of the porous support.
- Who is the assignee on this patent?
- L Livermore Nat Security Llc
- What technology area does this patent fall under?
- Primary CPC classification B01D53/228. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 01 2022 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).