Claims
- 1. Process for partial oxidation in a Claus furnace of at least one gas stream comprising hydrogen sulphide, comprising the steps of:
- (a) injecting at least one gas stream comprising hydrogen sulphide and at least one oxygen-enriched gas stream into the Claus furnace, wherein said streams are injected such that the angle formed by the speed vectors of each of the streams is smaller than approximately 15.degree. when taken immediately after said streams emerge,
- (b) controlling the speed of injection of the gas stream comprising hydrogen sulphide and the speed of injection of the oxygen-enriched gas stream such that said speeds have a ratio between 0.8 and 1.2, and such that the furnace temperature is from 1000.degree. C. to 1800.degree. C.
- 2. Process according to claim 1, wherein said oxygen-enriched gas stream is air enriched in oxygen to a content higher than 25 mol %.
- 3. Process according to claim 1, wherein the hydrogen sulphide stream comprises hydrogen sulphide at a concentration which is higher than or equal to 10 mol %.
- 4. Process according to claim 1, wherein the oxygen-enriched gas stream comprises two distinct streams, wherein said streams are injected such that the angle formed by the speed vectors of each of the streams is smaller than approximately 15.degree. when taken immediately after said streams emerge, and wherein said distinct streams have distinct oxygen contents.
- 5. Process according to claim 4, wherein the oxygen-enriched gas stream comprises a stream of pure oxygen surrounded by a stream of air.
- 6. Process according to claim 1, wherein the gas stream comprising hydrogen sulphide is a sour gas stream.
- 7. Process according to claim 1, comprising injecting at least a portion of the gas stream comprising hydrogen sulphide so that at least a portion of this stream surrounds the oxygen-enriched stream.
- 8. Process according to claim 1, wherein the gas stream comprising hydrogen sulphide is an ammonia-containing gas stream.
- 9. Process according to claim 1, further comprising reacting an ammonia-containing gas stream and a sour gas stream with the oxygen-enriched gas stream.
- 10. Process according to claims 8 or 9, wherein the ammonia-containing gas stream is surrounded by at least a portion of the oxygen-enriched gas stream.
- 11. Process according to claims 8 or 9, wherein the ammonia-containing gas stream is surrounded by a stream of pure oxygen.
- 12. Process according to claim 1, wherein the streams injected into the Claus furnace are coaxial.
- 13. Process according to claim 1, wherein a single Claus furnace is used without recycling of cooled reacting effluents.
- 14. Process according to claim 1, wherein said Claus furnace is one adapted for the oxidation of a gas stream comprising hydrogen sulphide by reaction with a stream of air not enriched in oxygen.
- 15. Process according to claim 1, further comprising the step of obtaining a gas stream at an exit of the Claus furnace which is at a temperature higher than 1000.degree. C.
- 16. Process according to claim 2, wherein the air is enriched in oxygen to a content of between 40 and 100 mol %.
- 17. Process according to claim 3, wherein the hydrogen sulphide stream comprises between 40 and 99% hydrogen sulphide.
- 18. Process according to claim 7, wherein said stream comprising hydrogen sulphide is a sour gas stream.
- 19. Process according to claim 15, wherein the gas obtained at the exit of the Claus furnace is at a temperature higher than 1300.degree. C.
- 20. Process according to claim 19, wherein the gas obtained at the exit of the Claus furnace is at a temperature higher than 2000.degree. C.
Priority Claims (1)
Number |
Date |
Country |
Kind |
95 01989 |
Feb 1995 |
FRX |
|
Parent Case Info
This application is the National Stage of PCT/FR96/00266, filed Feb. 20, 1996.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
102e Date |
371c Date |
PCT/FR96/00266 |
2/20/1996 |
|
|
11/17/1997 |
11/17/1997 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO96/26157 |
8/29/1996 |
|
|
US Referenced Citations (12)
Foreign Referenced Citations (3)
Number |
Date |
Country |
315255 |
Oct 1987 |
EPX |
325286 |
Jan 1988 |
EPX |
3430015 |
May 1986 |
DEX |