Process and apparatus for processing a gas stream and especially for processing a flue gas stream
US-2015375164-A1 · Dec 31, 2015 · US
Process and plant for the removal of nitrogen oxides from oxygen-containing gas streams
US8940262B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8940262-B2 |
| Application number | US-201214110718-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 12, 2012 |
| Priority date | Apr 14, 2011 |
| Publication date | Jan 27, 2015 |
| Grant date | Jan 27, 2015 |
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Abstract
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The invention relates to a process for the removal of NO and NO 2 from an oxygen-containing gas stream, which comprises a scrubbing step in which the gas stream is brought into contact with an ammonia-containing scrubbing solution, NO is oxidized to form NO 2 by means of the oxygen present at a pressure of at least 2 bar and temperatures of from 15° C. to 60° C. and at least part of the NO 2 present in the gas stream is converted by means of the ammonia-containing scrubbing solution into ammonium nitrite and a downstream decomposition step in which the ammonium nitrite present in the scrubbing solution is thermally decomposed into elemental nitrogen and water, where the decomposition step is carried out at temperatures of from 121° C. to 190° C. and a pressure of from 2 to 40 bar. The invention likewise relates to a plant for operation of the process of the invention.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for the removal of NO and NO 2 from an oxygen-containing gas stream, said process comprising: a scrubbing step in which the gas stream is brought into contact with an ammonia-containing scrubbing solution, and NO is oxidized to NO 2 , by means of the oxygen present, at a pressure of at least 2 bar and temperatures of from 15° C. to 60° C., wherein at least part of the NO 2 present in the gas stream is converted by means of the ammonia-conta…
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Operations & Transport · mapped topic
Mechanical Engineering · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
Operations & Transport · mapped topic
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- What does patent US8940262B2 cover?
- The invention relates to a process for the removal of NO and NO 2 from an oxygen-containing gas stream, which comprises a scrubbing step in which the gas stream is brought into contact with an ammonia-containing scrubbing solution, NO is oxidized to form NO 2 by means of the oxygen present at a pressure of at least 2 bar and temperatures of from 15° C. to 60° C. and at least part of the NO 2 …
- Who is the assignee on this patent?
- Schodel Nicole, Zander Hans-Jorg, Winkler Florian, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification B01D53/56. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Jan 27 2015 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).