Method for operating a gas-phase phosgenation plant
US-9840461-B2 · Dec 12, 2017 · US
Process and reactor for producing phosgene
US12590005B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12590005-B2 |
| Application number | US-202017612237-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 20, 2020 |
| Priority date | May 20, 2019 |
| Publication date | Mar 31, 2026 |
| Grant date | Mar 31, 2026 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The invention relates to a process for producing phosgene by gas-phase reaction of carbon monoxide and chlorine in the presence of a catalyst in a reactor which comprises a plurality of parallel catalyst tubes which are filled with the catalyst and around which at least one fluid heat transfer medium flows, where a feed stream of a mixture of a chlorine input stream and a carbon monoxide input stream is fed into the catalyst tubes and is allowed to react to give a phosgene-comprising product gas mixture, wherein the reaction is carried out at an area load of more than 2.75 kg of phosgene/m2s. The invention also provides a reactor for carrying out the process.
First claim
Opening claim text (preview).
The invention claimed is: 1 . A process for producing phosgene by gas-phase reaction of carbon monoxide and chlorine in the presence of a catalyst in a reactor which comprises a plurality of parallel catalyst tubes which are filled with the catalyst and around which at least one fluid heat transfer medium flows, where a feed stream of a mixture of a chlorine input stream and a carbon monoxide input stream is fed into the catalyst tubes and is allowed to react to give a phosgene-comprising product gas mixture, wherein the reaction is carried out at an area load of from 3.7 to 9 kg of phosgene/m 2 s, and wherein an amount of carbon tetrachloride formed from a reaction of activated carbon with chlorine is less than 125 g per metric ton of phosgene produced. 2 . The process according to claim 1 , wherein the catalyst comprises an activated carbon catalyst. 3 . The process according to claim 1 , wherein the reaction is carried out at an area load of from 4.1 to 9 kg of phosgene/m 2 s. 4 . The process according to claim 3 , wherein the reaction is carried out at an area load of from 4.1 to 6 kg of phosgene/m 2 s. 5 . The process according to claim 1 , wherein the feed stream has a stoichiometric excess of carbon monoxide over chlorine of from 0.1 to 50 mol %. 6 . The process according to claim 1 , wherein the feed stream is introduced with an absolute pressure in the range from 50 to 2000 kPa. 7 . The process according to claim 1 , wherein the at least one fluid heat transfer medium flows around the catalyst tubes in separate cooling zones. 8 . The process according to claim 1 , wherein the at least one fluid heat transfer medium is a liquid heat transfer medium.
Assignees
Inventors
Classifications
Heating or cooling the reactor · CPC title
Heating or cooling the reactor (B01J8/062 takes precedence) · CPC title
Feeding reactive fluids · CPC title
in tube reactors; the solid particles being arranged in tubes · CPC title
- C01B32/80Primary
Phosgene · CPC title
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- What does patent US12590005B2 cover?
- The invention relates to a process for producing phosgene by gas-phase reaction of carbon monoxide and chlorine in the presence of a catalyst in a reactor which comprises a plurality of parallel catalyst tubes which are filled with the catalyst and around which at least one fluid heat transfer medium flows, where a feed stream of a mixture of a chlorine input stream and a carbon monoxide input …
- Who is the assignee on this patent?
- Basf Se
- What technology area does this patent fall under?
- Primary CPC classification C01B32/80. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 31 2026 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).