EP3636932A1 - Système de compression d'air pour une séparation d'air - Google Patents

Système de compression d'air pour une séparation d'air Download PDF

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Publication number
EP3636932A1
EP3636932A1 EP18199514.3A EP18199514A EP3636932A1 EP 3636932 A1 EP3636932 A1 EP 3636932A1 EP 18199514 A EP18199514 A EP 18199514A EP 3636932 A1 EP3636932 A1 EP 3636932A1
Authority
EP
European Patent Office
Prior art keywords
air
compressor
steam turbine
compander
lsu
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.)
Withdrawn
Application number
EP18199514.3A
Other languages
German (de)
English (en)
Inventor
Holger HERTWIG
Manfred Peschen
Lars Schlüter
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to EP18199514.3A priority Critical patent/EP3636932A1/fr
Priority to PCT/EP2019/076409 priority patent/WO2020074300A1/fr
Publication of EP3636932A1 publication Critical patent/EP3636932A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/04—Units comprising pumps and their driving means the pump being fluid-driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/08—Adaptations for driving, or combinations with, pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
    • F04D17/08—Centrifugal pumps
    • F04D17/10—Centrifugal pumps for compressing or evacuating
    • F04D17/12—Multi-stage pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
    • 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
    • F25J3/04109—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
    • F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
    • F25J2230/20—Integrated compressor and process expander; Gear box arrangement; Multiple compressors on a common shaft

Definitions

  • the invention has set itself the task of reducing investment costs without significantly reducing the efficiency of such systems.
  • the invention proposes an air compression system for air separation of the type defined in the introduction with the additional features of the characterizing part of the claim 1 before.
  • the dependent claims relate to advantageous developments of the invention.
  • a compressor module in the sense of the invention is a compressor or a compressor stage and, in the case of the radial compressor or centrifugal compressor, comprises at least one impeller.
  • the main air compressor and the booster air compressor each have at least one compressor module that is driven by the respective drive steam turbine.
  • the invention is essentially concerned with the compression of air for air separation, which must meet the specific requirements of air separation, and with the drive of this compression process.
  • Booster Air Compressor BAC booster air compressors
  • an individual speed and possibly a separate speed control can advantageously be provided for each individual compander. It is particularly expedient to provide an inlet guide device, a nozzle housing or an inlet valve - possibly with a bypass around the steam turbine - for the inflowing steam for the steam turbine of the compander that is in each case driving. In this way, an individual thermodynamic and mechanical optimization of each compander can be carried out during operation.
  • An advantageous development of the invention provides that the driving first, second or further steam turbines are in fluid-conducting connection with a first boiler of the air compression system for air separation in such a way that steam generated by the first boiler serves to drive the drive steam turbines or the compander.
  • main air compressor and the first drive steam turbine and / or the booster air compressor and the second steam turbine each have a common housing.
  • This can be a common outer housing or a common inner housing or both.
  • a single-shell construction of the compander is also conceivable.
  • a further development of the invention is particularly expedient in which the first compander and / or the second compander have a first compressor of the compander in an axial sequence along the respective shaft, and the drive steam turbine has a second compressor of the compander.
  • the axial sequence provides for the two compressors to be arranged next to one another and for the drive steam turbine to be arranged next to this compressor pairing.
  • the compressors are preferably each designed as a single-stage radial compressor.
  • an advantageous development of the invention provides that the first compressor and the second compressor each have an inflow and an outflow, the axial arrangement of the inflow and outflow of the first compressor and the second compressor being opposite to one another and in particular the axial flow direction the two compressors are oriented opposite to each other.
  • the term "axial” here refers to the respective axis of rotation or shaft axis of the compressors designed as turbo compressors. This reference always applies - unless otherwise defined in the respective context.
  • a first intercooler for cooling the compressed air flow is provided between the main air compressor and the booster air compressor.
  • Another advantageous development provides that an air flow for compression flows from the main air compressor to the booster air compressor and a steam flow flows opposite this air flow from the second drive steam turbine to the first drive steam turbine. Accordingly, the steam driving the first compander or the first drive steam turbine has a lower pressure level than the steam driving the second compander or the second drive steam turbine.
  • a particular advantage of this arrangement when using companders according to the invention is that only reduced pressure differences occur in the companders between the steam side and the air side, which are to be sealed by means of seals.
  • FIGS. 1 and 2nd show two different embodiments of an air compression system for air separation LSU according to the invention schematically as a flow chart. Components that are identified identically mean elements that have the same function.
  • the in the Figure 1 Air compression system shown for an air separation LSU provides a main air compressor MAC and a booster air compressor BAC.
  • the main air compressor MAC of the embodiment of FIG Figure 1 comprises three individual companders CX1, CX2, CX3 and the booster air compressor BAC comprises four individual companders CX4 - CX7.
  • the main air compressor comprises a first compander CX1, the first booster air compressor BAC2 a second compander CX2 and a second booster air compressor BAC2 a third compander CX3. While the companders CX1-CX7 used in the embodiment of FIG.
  • FIG Figure 1 all have only a single compressor CP1-CP7, in the embodiment of FIG Figure 2 provided compander CX1 - CX3 each two compressors CP1 - CP6. All companders CX1-CX7 in the two exemplary embodiments each have a drive steam turbine ST1-ST7, which is arranged on a common shaft SH1-SH7 with the respective compressors CP1-CP7.
  • the compressors CP1-CP7 assigned to a single drive steam turbine ST1-ST7 are referred to in the conceptual understanding of this description as a compressor module.
  • the individual companders CX1-CX7 each have a common housing CAS for the drive steam turbine ST1-ST7 and the compressors CP1-CP7 arranged on the common shaft SH1-SH7.
  • the common case CAS is in Figure 1 only shown as an example on some companders.
  • the air compression system for air separation LSU has a common lubricating oil device LOU.
  • the individual shaft bearings and corresponding supply lines are not shown.
  • the individual drive steam turbines ST1-ST7 are supplied with steam STM, the amount of steam being regulated by means of a valve VLV and / or an inlet guide device IGV or by means of a comparable device upstream of the blading of the drive steam turbine ST1-ST7.
  • An air flow AIR enters the main air compressor MAC and is passed on to the booster air compressor (s) BAC1, BAC2, BAC.
  • a first intermediate cooling IC1 can be provided in order to bring the air flow AIR to an inlet temperature that is advantageous for the compression process.
  • Intermediate cooling IC2, IC3, IC4 is particularly expediently provided between the individual companders CX1-CX7.
  • the corresponding intermediate cooling systems are only provided between the individual companders CX1 - CX7 and labeled I1 - I5.
  • the heat removed from the air flow AIR by means of the intercoolers IC1-IC4, I1-I5 can also be used to heat the steam STM.
  • a condenser COD is provided for the circulation of the steam STM.
  • the steam STM downstream of the condenser COD is pumped to a higher pressure level by a pump PMP before it evaporates and overheats in a boiler BOI.
  • the BOI boiler generates the STM steam, which is used to drive the ST1 - ST7 drive steam turbines.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP18199514.3A 2018-10-10 2018-10-10 Système de compression d'air pour une séparation d'air Withdrawn EP3636932A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP18199514.3A EP3636932A1 (fr) 2018-10-10 2018-10-10 Système de compression d'air pour une séparation d'air
PCT/EP2019/076409 WO2020074300A1 (fr) 2018-10-10 2019-09-30 Système de compression d'air pour une séparation de l'air

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18199514.3A EP3636932A1 (fr) 2018-10-10 2018-10-10 Système de compression d'air pour une séparation d'air

Publications (1)

Publication Number Publication Date
EP3636932A1 true EP3636932A1 (fr) 2020-04-15

Family

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Family Applications (1)

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EP18199514.3A Withdrawn EP3636932A1 (fr) 2018-10-10 2018-10-10 Système de compression d'air pour une séparation d'air

Country Status (2)

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EP (1) EP3636932A1 (fr)
WO (1) WO2020074300A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4163500A1 (fr) * 2021-10-11 2023-04-12 Siemens Energy Global GmbH & Co. KG Installation de compression de l'air pour une séparation de l'air

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR356836A (fr) * 1905-05-03 1905-12-09 Auguste Rateau Turbo-ventilateurs à haute pression
WO2011141439A1 (fr) 2010-05-11 2011-11-17 Siemens Aktiengesellschaft Compresseur à engrenage multiétagé
WO2017065843A1 (fr) * 2015-10-15 2017-04-20 Praxair Technology, Inc. Procédé de compression d'un flux d'air d'alimentation entrant dans une installation de séparation d'air cryogénique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR710516A (fr) * 1930-01-27 1931-08-24 Ljungstroms Angturbin Ab Groupe compresseur à commande par turbine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR356836A (fr) * 1905-05-03 1905-12-09 Auguste Rateau Turbo-ventilateurs à haute pression
WO2011141439A1 (fr) 2010-05-11 2011-11-17 Siemens Aktiengesellschaft Compresseur à engrenage multiétagé
WO2017065843A1 (fr) * 2015-10-15 2017-04-20 Praxair Technology, Inc. Procédé de compression d'un flux d'air d'alimentation entrant dans une installation de séparation d'air cryogénique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4163500A1 (fr) * 2021-10-11 2023-04-12 Siemens Energy Global GmbH & Co. KG Installation de compression de l'air pour une séparation de l'air

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WO2020074300A1 (fr) 2020-04-16

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