IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0483917
(2002-06-27)
|
우선권정보 |
FR-01 09307(2001-07-12) |
국제출원번호 |
PCT/FR02/002225
(2002-06-27)
|
§371/§102 date |
20040608
(20040608)
|
국제공개번호 |
WO03/006902
(2003-01-23)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- L'Air Liquide, Societe Anonyme A Directoire et Conseil De Surveillance Pour L'Etude et L'Exploitation Des Procedes Georges Claude
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
3 |
초록
▼
The invention concerns a method for driving at least a compression machine (7, 8) of an air distillation unit (3) which supplies oxygen and/or nitrogen and/or argon to an industrial plant (1) producing water vapour. In normal running conditions, the compression machine is driven at least partly by a
The invention concerns a method for driving at least a compression machine (7, 8) of an air distillation unit (3) which supplies oxygen and/or nitrogen and/or argon to an industrial plant (1) producing water vapour. In normal running conditions, the compression machine is driven at least partly by a steam turbine ( 13) fed with said water vapour, which is input at an input port ( 15) of the turbine. The turbine has two input ports (15, 16) which correspond to different intake pressures. During at least one operating phase of said plant (1), the turbine is partly supplied with water vapour from an auxiliary water vapour source (21) and input at the turbine other input port (16). The invention is useful for supplying air gas to a synthetic hydrocarbon production plant.
대표청구항
▼
What is claimed is: 1. A method of driving at least one compressor of an air distillation unit that produces at least one fluid selected from the group consisting of oxygen, nitrogen, and argon, wherein the compressor is driven only by steam expansion means with production of external work, said co
What is claimed is: 1. A method of driving at least one compressor of an air distillation unit that produces at least one fluid selected from the group consisting of oxygen, nitrogen, and argon, wherein the compressor is driven only by steam expansion means with production of external work, said compressor being joined to said steam expansion means via a disconnectable coupling device, said steam expansion means having two inlets that correspond to different intake pressures, fluid from the air distribution unit is sent to an industrial unit producing steam, wherein during a steady state mode, steam from the industrial unit is sent to an inlet of the steam expansion means, and, during at least the startup of said industrial unit, said steam expansion means are supplied with auxiliary steam coming from an auxiliary steam supply other than said industrial unit and introduced into an inlet of said steam, expansion means. 2. The method as claimed in claim 1, wherein the auxiliary steam comes from an auxiliary steam supply and is introduced into the other inlet and/or the same inlet of these expansion means. 3. The method as claimed in claim 2, wherein, as the industrial unit is progressively brought up to the normal operating conditions, the steam produced by said industrial unit is used to deliver some of the energy for driving the compressor of the air distillation unit via said expansion means. 4. The method as claimed in claim 3, wherein, in the steady state, the expansion means are predominantly supplied with steam coming from said industrial unit. 5. The method as claimed in claim 1, wherein the inlet corresponding to the high intake pressure of said expansion means is supplied practically permanently. 6. The method as claimed in claim 5, wherein the auxiliary steam is at the medium intake pressure and in that the following are supplied in succession: the two inlets with the auxiliary steam; the high-pressure inlet with the steam coming from said industrial unit and the medium-pressure inlet with the auxiliary steam; and in the steady state, at least the high-pressure inlet with the steam coming from the industrial unit. 7. The method as claimed in claim 5, wherein the auxiliary steam is at the high pressure and in that the following are supplied in succession: the high-pressure inlet with the auxiliary steam; the high-pressure inlet with the auxiliary steam and the medium-pressure inlet with the steam coming from said industrial unit; and in the steady state, the two inlets with the steam coming from said industrial unit. 8. The method as claimed in claim 5, wherein the auxiliary steam is at the high pressure and in that the following are supplied in succession: the high-pressure inlet with the auxiliary steam; and the high-pressure inlet with the auxiliary steam and the medium-pressure inlet with the steam coming from said industrial unit. 9. The method as claimed in claim 1, wherein at least two compressors of the air distillation unit, which are coupled to a single shaft, are driven in a similar manner. 10. The method as claimed in claim 1, wherein said expansion means comprise a steam turbine having a body provided with two inlets. 11. An apparatus comprising: (1) at least one air distillation unit which includes at least one compressor driven only by steam expansion means with production of external work, and a cold box containing an air distillation apparatus and a heat exchange line that is designed to cool the compressed air down to a temperature allowing it to be distilled; and (2) at least one industrial unit, which is optionally supplied with at least one industrial gas produced by said air distillation unit, and which produces steam, wherein at least some of this steam feeds said expansion means of said air distillation unit, wherein said expansion means has two inlets that correspond to two different intake pressures, wherein said air distillation unit includes an auxiliary steam supply, wherein this supply delivering steam is at a pressure that corresponds to one of the two inlets of said expansion means and is designed to be connected to this inlet, and herein said industrial unit produces steam at a pressure that corresponds to the other inlet of said expansion means and is designed to be introduced into this other inlet. 12. The apparatus as claimed in claim 11, further comprising means for simultaneously introducing the medium-pressure steam into the two inlets of said expansion means. 13. The apparatus as claimed in claim 11, wherein the compressor is a main air compressor of the air distillation unit. 14. The apparatus as claimed in claim 12, wherein the compressor is a main air compressor of the air distillation unit. 15. The apparatus as claimed in claim 11, further comprising at least a second compressor coupled to the same shaft as the main air compressor. 16. The apparatus as claimed in claim 15, wherein the second compressor is another gas compressor of the air distillation unit. 17. The apparatus as claimed in claim 16, wherein the second compressor is an air booster. 18. The apparatus as claimed in claim 12, wherein said expansion means comprises a steam turbine having a body provided with two inlets.
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