Electrochemical carbon monoxide production
US-9486771-B2 · Nov 8, 2016 · US
Process for safe production of phosgene
US10486972B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10486972-B2 |
| Application number | US-201515316405-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jun 1, 2015 |
| Priority date | Jun 11, 2014 |
| Publication date | Nov 26, 2019 |
| Grant date | Nov 26, 2019 |
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- Title
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Abstract
Official abstract text for this publication.
In a process for safe production of phosgene (COCI2) from carbon monoxide and chlorine according to the reaction scheme CO (g)+Cl2 (g)−>COCI2 (g) in a plant with a capacity of phosgene below 10 t/hr, the CO is produced on site from a feed stock based mainly on CO2. The plant preferably comprises a solid oxide electrolysis cell (SOEC) stack system producing CO for use together with chlorine in the phosgene synthesis. This way of producing phosgene is based on using primary raw materials for which escape concentrations above 1000 ppm or even above 10000 ppm or 10% will not result in any health risk.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for the production of phosgene (COCl 2 ) from carbon monoxide and chlorine using a catalyst according to the reaction scheme CO( g )+Cl 2 ( g )->COCl 2 ( g ) (1) wherein the CO is produced electrolytically on site from CO 2 in a solid oxide electrolysis cell (SOEC) stack system; and wherein the concentration of the CO is increased through a separation process prior to feeding to the production of phosgene. 2. Process according to claim 1 , wherein the SOEC stack system producing CO is accommodated to turndown ratios below 30%. 3. Process according to claim 1 , wherein oxygen from the SOEC stack system is used wholly or in part for the production of chlorine. 4. Process according to claim 1 , wherein part of the SOEC unit is used to make electrical energy from the hydrogen produced in a chlorine plant when full capacity on the CO production is not needed. 5. Process according to claim 1 , wherein the SOEC stack system producing CO is accommodated to turndown ratios below 10%.
Assignees
Inventors
Classifications
Supplying or removing reactants or electrolytes; Regeneration of electrolytes · CPC title
- C01B32/80Primary
Phosgene · CPC title
Electrolytic production of inorganic compounds or non-metals · CPC title
Chemistry & Metallurgy · mapped topic
Chlorine; Compounds thereof (by simultaneous production of alkali metal hydroxides and chlorine, oxyacids or salts of chlorine C25B1/34) · CPC title
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- What does patent US10486972B2 cover?
- In a process for safe production of phosgene (COCI2) from carbon monoxide and chlorine according to the reaction scheme CO (g)+Cl2 (g)−>COCI2 (g) in a plant with a capacity of phosgene below 10 t/hr, the CO is produced on site from a feed stock based mainly on CO2. The plant preferably comprises a solid oxide electrolysis cell (SOEC) stack system producing CO for use together with chlorine in t…
- Who is the assignee on this patent?
- Haldor Topsoe As
- 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 Nov 26 2019 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).