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Hydroxyl group-containing amine-based sulfur dioxide and sulfurous acid absorbent, and method for preparing the same
US2020155997A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020155997-A1 |
| Application number | US-201916454566-A |
| Country | US |
| Kind code | A1 |
| Filing date | Jun 27, 2019 |
| Priority date | Nov 20, 2018 |
| Publication date | May 21, 2020 |
| Grant date | — |
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- Title
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Abstract
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The present disclosure relates to a hydroxyl group-containing amine-based sulfur dioxide and sulfurous absorbent, and a method for preparing the same. The absorbent uses an ionic liquid in the form of a salt including a diamine compound substituted with a hydroxyl group, and can be used as an absorbent capable of removing not only sulfur dioxide (SO 2 ) but also sulfurous acid (H 2 SO 3 ) formed by combination of sulfur dioxide with water.
First claim
Opening claim text (preview).
What is claimed is: 1 . A sulfur dioxide absorbent selected from the group consisting of the following [Chemical Formula 1] to [Chemical Formula 3]: In Chemical Formula 1 to Chemical Formula 3, R 1 -R 4 are the same or different and each is independently selected from the group consisting of H, a C1-C6 alkyl, carbonyl and a C1-C6 alkoxy; X is selected from the group consisting of Cl, Br, I, MeSO 3 , CF 3 SO 3 , CF 3 CO 2 , HCO 2 , CF 3 CO 2 and CH 3 CO 2 ; and n is an integer of 1-10. 2 . The sulfur dioxide absorbent according to claim 1 , which is one that absorbs sulfur dioxide and sulfurous acid (H 2 SO 3 ) formed by combination of sulfur dioxide with water. 3 . The sulfur dioxide absorbent according to claim 1 , wherein the sulfur dioxide absorption temperature is 10-80° C. 4 . The sulfur dioxide absorbent according to claim 1 , wherein the sulfur dioxide desorption temperature may be 50-150° C. 5 . The sulfur dioxide absorbent according to claim 1 , which is selected from the group consisting of the following [Chemical Formula 4] to [Chemical Formula 11]:
Assignees
Inventors
Classifications
containing a piperazine-ring · CPC title
with gas-liquid contact · CPC title
by treating the gases with other liquids · CPC title
Tertiary amines · CPC title
Ionic liquids and zwitter-ions · CPC title
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- What does patent US2020155997A1 cover?
- The present disclosure relates to a hydroxyl group-containing amine-based sulfur dioxide and sulfurous absorbent, and a method for preparing the same. The absorbent uses an ionic liquid in the form of a salt including a diamine compound substituted with a hydroxyl group, and can be used as an absorbent capable of removing not only sulfur dioxide (SO 2 ) but also sulfurous acid (H 2 SO 3 ) forme…
- Who is the assignee on this patent?
- Korea Inst Sci & Tech
- 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 Thu May 21 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). 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).