초록 ▼

A process for hydrogenation of glycerol in which a feed comprising glycerol is contacted with a stream of a hydrogen-containing gas and subjected to hydrogenation in the vapour phase in the presence of a catalyst at a temperature of from about 160�� C. to about 260�� C., a pressure of from about 10

A process for hydrogenation of glycerol in which a feed comprising glycerol is contacted with a stream of a hydrogen-containing gas and subjected to hydrogenation in the vapour phase in the presence of a catalyst at a temperature of from about 160�� C. to about 260�� C., a pressure of from about 10 to about 30 bar, a hydrogen to glycerol ratio of from 400:1 to about 600:1 and a residence time of from about 0.01 to about 2.5 secs.

대표청구항 ▼

The invention claimed is: 1. A process for hydrogenation of glycerol in which a feed comprising glycerol is contacted with a stream of a hydrogen-containing gas and subjected to hydrogenation in the vapour phase in the presence of a catalyst at a temperature of from about 160�� C. to about 260�� C.

The invention claimed is: 1. A process for hydrogenation of glycerol in which a feed comprising glycerol is contacted with a stream of a hydrogen-containing gas and subjected to hydrogenation in the vapour phase in the presence of a catalyst at a temperature of from about 160�� C. to about 260�� C., a pressure of from about 10 to about 30 bar, a hydrogen to glycerol ratio of from 400:1 to about 600:1 and a residence time of from about 0.01 to about 2.5 hr-1. 2. A process according to claim 1 wherein the glycerol feed is vaporised into a stream of hydrogen-containing gas in a vaporiser before being passed to a hydrogenation reactor. 3. A process according to claim 1 or claim 2 wherein the catalyst is provided as a fixed bed located in the hydrogenation reactor. 4. A process according to any one of claims 1 to 3 wherein the catalyst is a reduced copper catalyst. 5. A process according to any one of claims 1 to 4 wherein the reaction temperature is from about 200�� C. to about 240�� C. 6. A process according to any one of claims 1 to 5 wherein the reaction temperature is from about 205�� C. to about 220�� C. 7. A process according to any one of claims 1 to 6 wherein the reaction pressure is from about 17 bar to about 23 bar. 8. A process according to any one of claims 1 to 7 wherein the reaction pressure is from about 20 bar. 9. A process according to any one of claims 1 to 8 wherein the residence time is from about 0.3 secs to about 1.5 secs. 10. A process according to any one of claims 1 to 8 wherein the residue time is about 0.5 secs. 11. A process according to any one of claims 1 to 10 wherein the hydrogen to glycerol ratio is from about 450:1 to about 550:1. 12. A process according to any one of claims 1 to 11 wherein the hydrogen to glycerol ratio is from about 500:1. 13. A process according to any one of claims 1 to 12 wherein the process is selective for the formation of 1,2-propanediol. 14. A process according to claim 13 wherein the temperature is less than about 210�� C. 15. A process according to any one of claims 1 to 12 wherein the process is selective for the formation of propanols. 16. A process according to claim 15 wherein the temperature is about 210�� C. or more.