EP1409937A1 - Verfahren und vorrichtung zur dampferzeugung und luftzerlegung - Google Patents

Verfahren und vorrichtung zur dampferzeugung und luftzerlegung

Info

Publication number
EP1409937A1
EP1409937A1 EP02751288A EP02751288A EP1409937A1 EP 1409937 A1 EP1409937 A1 EP 1409937A1 EP 02751288 A EP02751288 A EP 02751288A EP 02751288 A EP02751288 A EP 02751288A EP 1409937 A1 EP1409937 A1 EP 1409937A1
Authority
EP
European Patent Office
Prior art keywords
steam
inlet
expansion means
unit
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02751288A
Other languages
English (en)
French (fr)
Other versions
EP1409937B1 (de
Inventor
Jean-Pierre Gourbier
Lasad Jaouani
Frédéric Staine
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
Air Liquide SA
LAir Liquide SA a Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Air Liquide SA, LAir Liquide SA a Directoire et Conseil de Surveillance pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP1409937A1 publication Critical patent/EP1409937A1/de
Application granted granted Critical
Publication of EP1409937B1 publication Critical patent/EP1409937B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
    • F25J3/04018—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of main feed air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
    • F25J3/04024—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of purified feed air, so-called boosted air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
    • F25J3/0409—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression of oxygen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04109—Arrangements of compressors and /or their drivers
    • F25J3/04115—Arrangements of compressors and /or their drivers characterised by the type of prime driver, e.g. hot gas expander
    • F25J3/04121—Steam turbine as the prime mechanical driver
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04109—Arrangements of compressors and /or their drivers
    • F25J3/04145—Mechanically coupling of different compressors of the air fractionation process to the same driver(s)
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04527—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general
    • F25J3/04539—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the H2/CO synthesis by partial oxidation or oxygen consuming reforming processes of fuels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04527—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general
    • F25J3/04539—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the H2/CO synthesis by partial oxidation or oxygen consuming reforming processes of fuels
    • F25J3/04545—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the H2/CO synthesis by partial oxidation or oxygen consuming reforming processes of fuels for the gasification of solid or heavy liquid fuels, e.g. integrated gasification combined cycle [IGCC]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04563—Integration with a nitrogen consuming unit, e.g. for purging, inerting, cooling or heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
    • F25J3/04812—Different modes, i.e. "runs" of operation
    • F25J3/04818—Start-up of the process

Definitions

  • the present invention relates to a method for driving at least one compression machine of an air distillation unit which supplies oxygen and / or nitrogen and / or argon to a industrial unit producing water vapor, this process being of the type in which, in steady state, the compression machine is driven at least in part by means of steam expansion with production of external work, supplied by steam of water from said industrial unit, this vapor being introduced at an inlet of said expansion means.
  • the vapor is generally used as a source of drive, via a steam turbine, of at least one compression machine of the distillation unit of air that produces oxygen.
  • the steam turbine can be a backpressure turbine, escaping at a pressure higher than atmospheric pressure, or a condensing turbine, escaping at a pressure lower than atmospheric pressure and associated with a water condenser, cooled by water or by ambient air, and to a pump for recycling the water to the steam generator.
  • steam is only fully available in steady state, which poses the problem of starting the entire installation.
  • EP-A-0930268 describes an air separation device in which the main compressor is coupled to an electric motor and a steam turbine which receives steam at two different pressures. During start-up, the main compressor and the electric motor operate using electricity generated by a gas turbine. The invention aims to solve this problem in a particularly flexible way, by eliminating the electric motor.
  • the subject of the invention is a method for driving at least one compression machine of an air distillation unit which produces oxygen and / or nitrogen and / or l argon, this process being of the type in which, in steady state, the compression machine is driven only by means of steam expansion with production of external work, this steam being introduced at an inlet of said expansion means, said means steam expansion device having two inlets which correspond to different inlet pressures, respectively high and medium, and, during at least the start-up of said industrial unit, said expansion means are supplied at least partially with steam auxiliary from an auxiliary steam source and introduced to an inlet of these expansion means.
  • the auxiliary water vapor comes from an auxiliary steam source and is introduced at the other inlet and / or the same inlet of these expansion means.
  • said operating phase includes the start-up phase of said industrial unit;
  • the industrial unit being supplied with oxygen and / or nitrogen and / or argon by the air distillation unit, the steam produced is used by the latter to provide part of the drive energy of the compression machine, via said expansion means;
  • said turbine means are mainly supplied with steam from said industrial unit;
  • the auxiliary steam is at high pressure, and the following is supplied successively: the high pressure inlet by the auxiliary steam; the high pressure inlet by the auxiliary steam and the medium pressure inlet by steam from said industrial unit; and in steady state, the two inlets by steam from said industrial unit;
  • the auxiliary steam is at high pressure, and we successively supply: high pressure input by auxiliary steam; and the high pressure inlet by the auxiliary steam and the medium pressure inlet by steam from said industrial unit; at least two compression machines are similarly driven coupled to the same shaft, namely a main air compressor and another gas compressor, in particular an air booster, from the air distillation unit;
  • Said expansion means comprise a steam turbine having a body provided with two inlets.
  • the invention also relates to a combined installation for the distillation of air and the production of water vapor, of the type comprising on the one hand at least one air distillation unit which comprises at least one compression machine driven only by means of steam expansion with production of external work, and a cold box containing an air distillation apparatus and a heat exchange line adapted to cool the compressed air to a temperature allowing its distillation, and d on the other hand an industrial unit which is optionally supplied with oxygen and / or nitrogen and / or argon produced by the air distillation unit and which produces water vapor, a at least part of this steam supplying the steam turbine, said expansion means comprising two inlets which correspond to different inlet pressures, respectively high and medium, in that the installation comprising a source of auxiliary steam, and this source supplying steam under a pressure which corresponds to one of the two inlets of said expansion means and being adapted to be connected to this inlet, while the industrial unit produces steam under pressure which corresponds to the other entry said expansion means and which is adapted to be introduced into this other entry
  • FIG. 1 schematically represents a combined installation in accordance with the invention
  • Figures 2A to 2C illustrate three successive phases of the start-up of this installation
  • - Figures 3A and 3B illustrate similarly the start of a variant.
  • the combined installation shown in Figure 1 consists on the one hand of a GTL 1 unit which produces, among other things, steam under high pressure in a line 2, and on the other hand of a unit of air distillation 3 which supplies unit 1 with high pressure oxygen gas HPGOX, via a line 4, and also high pressure nitrogen gas HPGN, via a line 5 equipped with a nitrogen compressor 6.
  • a GTL 1 unit which produces, among other things, steam under high pressure in a line 2
  • a unit of air distillation 3 which supplies unit 1 with high pressure oxygen gas HPGOX, via a line 4, and also high pressure nitrogen gas HPGN, via a line 5 equipped with a nitrogen compressor 6.
  • HPGOX high pressure oxygen gas
  • HPGN high pressure nitrogen gas
  • the unit 3 essentially comprises a first compression machine constituted by a main air compressor 7 (or, as a variant, by several compressors in parallel), a second compression machine constituted by an air booster 8 (or, in variant, by several boosters in parallel), and a cold box 9.
  • the latter essentially comprises an air distillation apparatus 10, for example a double column comprising a medium pressure distillation column and a low pressure distillation column coupled by a vaporizer-condenser, and a heat exchange line 11.
  • the compressor 7 and the booster 8 are mounted on the same shaft 12, coupled to a steam turbine 13 via a uncouplable coupling device 14.
  • the turbine 13 has two inputs: a high pressure input 15, located at the intake of the turbine, and a medium pressure input 16, located between the high pressure supply and the exhaust of the turbine .
  • the exhaust port of the turbine is indicated at 17 at atmospheric pressure or at a pressure higher or lower than atmospheric pressure.
  • the apparatus 10 produces LOX liquid oxygen under low pressure, and this liquid oxygen is brought to high production pressure by a pump 18, before being vaporized and heated in the exchange line 11.
  • the apparatus 10 also produces nitrogen gas GN, under low pressure and / or under medium pressure, which is heated in the exchange line and then compressed into 6 at high production pressure.
  • the atmospheric air, compressed at medium pressure at 7, is precooled in an air or water precooler 19, purified with water and C0 2 in an adsorption purification device 20, and separated into two streams: a first medium pressure air stream which is cooled at 11 to the vicinity of its dew point to be distilled at 10, and a second air stream which is boosted at 8 at a high pressure allowing vaporization high pressure liquid oxygen in the exchange line.
  • the unit 3 also includes an auxiliary boiler 21 which produces medium pressure auxiliary water vapor in a line 22.
  • the latter provided with a valve 23, is connected to the medium pressure inlet 16 of the turbine. 13, while line 2 is connected to the high pressure inlet 15.
  • the high pressure steam is around 60 bars and the medium pressure steam around 15 bars.
  • a bypass 24 equipped with a valve 25 connects the inputs 15 and 16.
  • unit 1 When the installation starts, unit 1 does not produce high pressure steam, then it produces in increasing quantity, until the nominal speed is established. Start-up takes place in three successive phases:
  • this vapor is introduced both into the inlets 15 and 16, via the pipe 24, the valve 25 of which is open.
  • Valve 25 is closed.
  • the high pressure steam, with increasing flow, is introduced, via line 2, into the inlet 15, and the necessary energy boost is supplied by a decreasing flow of medium pressure steam, introduced into the inlet 16.
  • Valve 25 remains closed. Once the established speed has been reached, the nominal flow rate of high pressure steam is introduced into the inlet 15 and drives the compression machines 7 and 8.
  • an addition of medium-pressure steam can be provided at inlet 16, as indicated in phantom.
  • Figures 3A and 3B relate to the case where the auxiliary steam is at a pressure higher than that of the steam produced by unit 1.
  • the first start-up step consists ( Figures 1 and 3A) of introducing the auxiliary steam at inlet 15.
  • a second step illustrated in lines mixed in FIG. 3A, the medium pressure steam, with increasing flow rate, is introduced at the inlet 16, via line 2, while the flow rate of the auxiliary steam is reduced correspondingly.
  • the valve 23 is closed.
  • the medium pressure steam, at its nominal flow rate, is introduced at the inlet 16.
  • unit 1 can be started with this oxygen.
  • the turbine 13 is then, at the start of the unit 3, supplied mainly by the steam coming from the unit 1, and mainly by the auxiliary steam coming from the source 21.
  • the ratio is for example 30% - 70%.
  • the proportion of auxiliary steam gradually decreases, until the established regime, where it is a minority, in particular less than 30% and, more preferably, less than 10%, or even zero.
  • the turbine can be composed either of a single body with two inlets which correspond to different intake pressures, or of two bodies each having an inlet. In the latter case, one body of the turbine is supplied by steam from industrial unit 1, and the other body by auxiliary steam.
  • the two bodies of the turbine are then either mechanically connected to each other, or mechanically connected to the body of at least one compression machine of the air distillation unit.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Control Of Turbines (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
EP02751288A 2001-07-12 2002-06-27 Verfahren zur dampferzeugung und luftzerlegung Expired - Lifetime EP1409937B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0109307A FR2827187B1 (fr) 2001-07-12 2001-07-12 Procede et installation de production de vapeur d'eau et de distillation d'air
FR0109307 2001-07-12
PCT/FR2002/002225 WO2003006902A1 (fr) 2001-07-12 2002-06-27 Procede et installation de production de vapeur d'eau et de distillation d'air

Publications (2)

Publication Number Publication Date
EP1409937A1 true EP1409937A1 (de) 2004-04-21
EP1409937B1 EP1409937B1 (de) 2010-12-08

Family

ID=8865438

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02751288A Expired - Lifetime EP1409937B1 (de) 2001-07-12 2002-06-27 Verfahren zur dampferzeugung und luftzerlegung

Country Status (7)

Country Link
US (1) US7010919B2 (de)
EP (1) EP1409937B1 (de)
JP (1) JP4422478B2 (de)
DE (1) DE60238537D1 (de)
ES (1) ES2357500T3 (de)
FR (1) FR2827187B1 (de)
WO (1) WO2003006902A1 (de)

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US20060123844A1 (en) * 2004-12-09 2006-06-15 Patrick Le Bot Integrated process for the separation of air and an integrated installation for the separation of air
JP4240155B1 (ja) * 2008-03-06 2009-03-18 三浦工業株式会社 蒸気システム
US20090235641A1 (en) * 2008-03-20 2009-09-24 Kevin Marion Brown T-Jet
WO2020160842A1 (en) 2019-02-07 2020-08-13 Linde Gmbh Gas treatment method and apparatus including an oxidative process for treating a sour gas mixture using gas from an air separation process

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DE60238537D1 (de) 2011-01-20
JP2004536251A (ja) 2004-12-02
WO2003006902A1 (fr) 2003-01-23
ES2357500T3 (es) 2011-04-27
FR2827187A1 (fr) 2003-01-17
US7010919B2 (en) 2006-03-14
FR2827187B1 (fr) 2004-07-23
EP1409937B1 (de) 2010-12-08
JP4422478B2 (ja) 2010-02-24
US20040211183A1 (en) 2004-10-28

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