Apparatus and method for reactive distillation for waste water treatment
US-10590009-B2 · Mar 17, 2020 · US
Organic carbonate production process
US11807599B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11807599-B2 |
| Application number | US-202017637205-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 6, 2020 |
| Priority date | Aug 30, 2019 |
| Publication date | Nov 7, 2023 |
| Grant date | Nov 7, 2023 |
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- Title
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Abstract
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The present invention relates to a process for preparing an organic carbonate, comprising contacting carbon dioxide with an alcohol in the presence of water and a catalyst in a reaction zone resulting in the production of the organic carbonate, wherein the organic carbonate is continuously removed from the reaction zone.
First claim
Opening claim text (preview).
We claim: 1. A process for preparing an organic carbonate, comprising contacting carbon dioxide and an alcohol in the presence of water and a catalyst in a reaction zone resulting in the production of the organic carbonate, wherein the organic carbonate is continuously removed from the reaction zone, and wherein the reaction zone is part of a distillation column and the organic carbonate is continuously removed from the distillation column. 2. The process according to claim 1 , wherein the alcohol is an aromatic C 5 -C 9 alcohol and/or an aliphatic C 1 -C 30 alcohol. 3. The process according to claim 1 , wherein the temperature is of from 50 to 200° C. 4. The process according to claim 1 , wherein the pressure is from 5 mbar to 10 bar. 5. The process according to claim 1 , wherein carbon dioxide is contacted with an alcohol in the presence of water and a catalyst in a reaction zone of a first distillation column resulting in a mixture comprising carbon dioxide, water, alcohol and organic carbonate, wherein organic carbonate is continuously removed from the first distillation column in a bottom stream from the first distillation column and wherein the top stream from the first distillation column comprises carbon dioxide, water, alcohol and optionally organic carbonate. 6. The process according to claim 5 , wherein the top stream from the first distillation column comprises carbon dioxide, water, alcohol and organic carbonate, and wherein: said top stream is at least partially condensed and separated into a gas stream comprising carbon dioxide, a first liquid stream comprising organic carbonate and alcohol and a second liquid stream comprising alcohol and water; the separated first liquid stream comprising organic carbonate and alcohol is recycled to the first distillation column; the separated second liquid stream comprising alcohol and water is fed to a second distillation column wherein separation into a stream comprising alcohol and a stream comprising water is performed; the separated stream comprising alcohol from the second distillation column is recycled to the first distillation column. 7. The process according to claim 1 , wherein the catalyst is an acidic catalyst. 8. The process according to claim 7 , wherein the acidic catalyst is an acidic resin. 9. The process according to claim 1 , wherein the catalyst is a heterogeneous, immobilized catalyst. 10. The process according to claim 8 , wherein the acidic catalyst is an acidic resin based on sulfonated polystyrene.
Assignees
Inventors
Classifications
- C07C68/04Primary
from carbon dioxide or inorganic carbonates · CPC title
in combination with chemical reactions · CPC title
by two or more of a fractionation, separation or rectification step · CPC title
sulfonated · CPC title
Purification; Separation; Stabilisation · CPC title
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Frequently asked questions
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- What does patent US11807599B2 cover?
- The present invention relates to a process for preparing an organic carbonate, comprising contacting carbon dioxide with an alcohol in the presence of water and a catalyst in a reaction zone resulting in the production of the organic carbonate, wherein the organic carbonate is continuously removed from the reaction zone.
- Who is the assignee on this patent?
- Shell Oil Co, Shell Usa Inc
- What technology area does this patent fall under?
- Primary CPC classification C07C68/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 07 2023 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).