Methods and apparatus for removing dissolved gases from fermentation streams
US-9221734-B2 · Dec 29, 2015 · US
CO2 desorption without stripper
US9566539B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9566539-B2 |
| Application number | US-201113701764-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 1, 2011 |
| Priority date | Jun 2, 2010 |
| Publication date | Feb 14, 2017 |
| Grant date | Feb 14, 2017 |
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- Title
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Abstract
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A CO 2 desorption method and equipment for performing this method is described. More specific, a method for desorbing CO 2 from an absorption fluid without involving a traditional stripper but instead using a heat exchanger as a flash-tank is disclosed. Further described is the utilization of cooling heat from a condenser for cooling the lean absorbent fluid.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for desorbing carbon dioxide from a CO 2 rich absorption fluid comprising a CO 2 absorbent, a solvent and absorbed CO 2 , the method comprising: heating the CO 2 rich absorption fluid, expanding the heated CO 2 rich absorption fluid in a flash tank, separating the expanded absorption fluid in a vapour phase comprising desorbed CO 2 and vaporised solvent and a main liquid phase comprising CO 2 lean absorption fluid, condensing at least part of the solvent within the vapour phase, recycling a part of the main liquid phase which has left the flash tank into the CO 2 rich absorption fluid which is about to enter the flash tank, and then mixing the condensed solvent with the rest of the main liquid phase comprising CO 2 lean absorption fluid from the flash tank to obtain a cooled CO 2 lean absorption fluid which is all recirculated back to a CO 2 absorption unit for use as a CO 2 absorbent in said absorption unit. 2. A method according to claim 1 , wherein the absorption fluid comprises amine and the difference in CO 2 loading between the rich and lean amine stream is within the range 0.20-0.30 mol CO 2 /mol absorbent. 3. A method according to claim 1 further comprising heating a part of the main liquid phase and returning it to the flash tank. 4. A method according to claim 1 , wherein the absorption fluid comprises amine and the difference in CO 2 loading between the rich and lean amine stream is within the range 0.23-0.27 mol CO 2 /mol absorbent.
Assignees
Inventors
Classifications
with evaporation or distillation · CPC title
Carbon dioxide · CPC title
- B01D19/0036Primary
Flash degasification (the other groups take precedence) · CPC title
Carbon dioxide · CPC title
Regeneration of liquid absorbents · CPC title
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Frequently asked questions
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- What does patent US9566539B2 cover?
- A CO 2 desorption method and equipment for performing this method is described. More specific, a method for desorbing CO 2 from an absorption fluid without involving a traditional stripper but instead using a heat exchanger as a flash-tank is disclosed. Further described is the utilization of cooling heat from a condenser for cooling the lean absorbent fluid.
- Who is the assignee on this patent?
- Svendsen John Arild, Statoil Petroleum As
- What technology area does this patent fall under?
- Primary CPC classification B01D19/0036. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Feb 14 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).