EP1026468A1 - Wärmatauscher, insbesondere Plattenwärmetauscher für Luftzerlegungsvorrichtung - Google Patents

Wärmatauscher, insbesondere Plattenwärmetauscher für Luftzerlegungsvorrichtung Download PDF

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Publication number
EP1026468A1
EP1026468A1 EP00400094A EP00400094A EP1026468A1 EP 1026468 A1 EP1026468 A1 EP 1026468A1 EP 00400094 A EP00400094 A EP 00400094A EP 00400094 A EP00400094 A EP 00400094A EP 1026468 A1 EP1026468 A1 EP 1026468A1
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EP
European Patent Office
Prior art keywords
plates
heat exchanger
copper
air
exchanger
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Withdrawn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
EP00400094A
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English (en)
French (fr)
Inventor
Benoit Davidian
Marc Wagner
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 pour lEtude et lExploitation des Procedes Georges Claude
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Filing date
Publication date
Application filed by Air Liquide SA, LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP1026468A1 publication Critical patent/EP1026468A1/de
Withdrawn legal-status Critical Current

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    • 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
    • F25J3/04854—Safety aspects of operation
    • F25J3/0486—Safety aspects of operation of vaporisers for oxygen enriched liquids, e.g. purging of liquids
    • 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
    • F25J3/04084—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 nitrogen
    • 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
    • F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
    • F25J3/04187—Cooling of the purified feed air by recuperative heat-exchange; Heat-exchange with product streams
    • F25J3/04218—Parallel arrangement of the main heat exchange line in cores having different functions, e.g. in low pressure and high pressure cores
    • 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
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
    • F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
    • F25J3/04296—Claude expansion, i.e. expanded into the main or high pressure column
    • 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
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
    • F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
    • F25J3/04303—Lachmann expansion, i.e. expanded into oxygen producing or low pressure column
    • 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
    • F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
    • F25J3/04375—Details relating to the work expansion, e.g. process parameter etc.
    • F25J3/04393—Details relating to the work expansion, e.g. process parameter etc. using multiple or multistage gas work expansion
    • 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
    • F25J3/04406—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 using a dual pressure main column system
    • F25J3/04412—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 using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • 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
    • F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
    • F25J5/002—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger
    • 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
    • F25J5/00—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants
    • F25J5/002—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger
    • F25J5/005—Arrangements of cold exchangers or cold accumulators in separation or liquefaction plants for continuously recuperating cold, i.e. in a so-called recuperative heat exchanger in a reboiler-condenser, e.g. within a column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0062—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements
    • F28D9/0068—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by spaced plates with inserted elements with means for changing flow direction of one heat exchange medium, e.g. using deflecting zones
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements
    • 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
    • F25J2250/00—Details related to the use of reboiler-condensers
    • F25J2250/02—Bath type boiler-condenser using thermo-siphon effect, e.g. with natural or forced circulation or pool boiling, i.e. core-in-kettle heat exchanger
    • 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
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/20—Particular dimensions; Small scale or microdevices
    • 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
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/32—Details on header or distribution passages of heat exchangers, e.g. of reboiler-condenser or plate heat exchangers
    • 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
    • F25J2290/00—Other details not covered by groups F25J2200/00 - F25J2280/00
    • F25J2290/44—Particular materials used, e.g. copper, steel or alloys thereof or surface treatments used, e.g. enhanced surface
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0033—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cryogenic applications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/10—Particular pattern of flow of the heat exchange media
    • F28F2250/108—Particular pattern of flow of the heat exchange media with combined cross flow and parallel flow

Definitions

  • the present invention relates to a heat exchanger and, more in particular, a plate heat exchanger, allowing to exchange heat between at least two fluids in an air separation device.
  • An air separation device includes several types of exchanger heat.
  • a main heat exchanger is used to cool the supply air to the apparatus at distillation temperature by heat exchange with one or several fluids from the distillation apparatus. In some cases, this are pressurized liquids from the device that vaporize against air at distill in the exchanger.
  • These exchangers are normally made entirely made of aluminum or copper or alloys of these metals (WO95 / 28610, Hausen, Linde “Tieftemperaturtechnik", pages 468-471, “Large Tonnage Oxygen Plants -Brazed Aluminum Technology and Equipment for the 80's ", Duncan et al., Cryogenic Processes and Equipment Conference, ASME, August 1980, "Improved Plant Main Condenser", O'Neill et al. , Cryogenic Processes and Equipment Conference, ASME, August 1980).
  • the apparatus also comprises at least one vaporizer-condenser which is a heat exchanger placed inside or outside of the column.
  • vaporizers are usually made entirely of copper, stainless steel, nickel or aluminum and consist of at least two circuits, at least one of which is connected to the rest of the installation by means of piping welded to the equipment.
  • exchangers usually include a plurality of plates aluminum separated between them from 5 to 7.6 mm (US-A-4715433) with aluminum waves between the plates.
  • FIG. 7 shows the evolution of the effective area in wavelength function for different materials and at temperatures different.
  • the effective surface corresponds to the primary surface (sheets separators) plus the secondary surface (waves) corrected by the fin coefficient.
  • the separation between the adjacent edges of the plates is greater than 9 mm or 10 mm.
  • the thickness of the plates varies from 1mm to 2.5mm.
  • the thickness of the waves varies from 0.1mm to 0.4mm.
  • the frequency of the waves varies from 300 waves / meter to 1200 waves / meter.
  • all the exchanger waves are made of copper.
  • the exchanger can fulfill one of the roles described above in a air separation device.
  • it can be the main exchanger which is used to cool the air to its distillation temperature or a sub-cooler.
  • a heat exchanger can make it possible to heat the tank of the second column with the head gas from the first column. Only two different flows circulate in the exchanger.
  • the heat exchanger according to the invention can be an exchanger intermediate of the second column or a single overhead condenser column.
  • a heat exchanger 20 comprises a series of parallel aluminum plates brazed together which define a multitude of passages intended alternately for one of the three fluid flow rates, for example, a gaseous air flow, a nitrogen-enriched gas flow at about 5 bars and a liquid flow enriched with oxygen at around 1.5 bars.
  • pressures can take other values.
  • the gas or liquid enters the exchanger by means of a pipe 2 in stainless steel welded in the middle of a head 1 (sometimes called “box” or in English “header”) semi-cylindrical and stainless steel which distributes the gas over the entire height of the exchanger 20 to send it to an inlet of passages defined by the stainless steel separator bar 12.
  • a pipe 2 in stainless steel welded in the middle of a head 1 (sometimes called “box” or in English “header") semi-cylindrical and stainless steel which distributes the gas over the entire height of the exchanger 20 to send it to an inlet of passages defined by the stainless steel separator bar 12.
  • These parallel rectangular plates 8 are separated by waves 9 of copper or an alloy comprising at least 80% copper fixed not soldering.
  • the separation between the adjacent edges of the plates is constant and equal to 9.6 mm with plates with a thickness of 1.8 mm.
  • the wave height is 9.63 mm.
  • an air flow is cooled in an exchanger 20A according to the invention by heat exchange with waste gases, liquid nitrogen and nitrogen gas before being sent to a double column.
  • This includes a medium pressure column thermally connected with a low pressure column by a vaporizer-condenser 20C according to the invention.
  • a flow of oxygen-rich liquid is drawn from the tank of the low pressure column and vaporizes by heat exchange with a flow of compressed air in a dedicated exchanger 20B according to the invention.
  • the exchanger comprises a stack of plates vertical and parallel rectangulars between which are interposed spacer waves also forming thermal fins.
  • Each pair of plates delimits a passage of generally flat shape.
  • the passages are closed by bars.
  • the bars corresponding to the treated fluid are however removed on the face upper 103 of the body 101, and also on its lower face.
  • the exchanger works like a thermosiphon, with an upward circulation of oxygen vaporized, causing liquid oxygen.
  • the two-phase mixture leaves the body 102 by its upper face 103.
  • the closing bars are moreover arranged so as to leave free, on the vertical lateral faces of the body 101, horizontal rows nitrogen input-output windows. These windows are capped by boxes generally cylindrical input-output, such as the box 104 shown in the drawing, provided at the upper part of the body and used to the entry of nitrogen gas into the nitrogen passages, which box is supplied by a pipe 105.
  • the ball constituting the fluid inlet-outlet chamber can be in stainless steel or nickel or an alloy comprising one of these two metals.
  • the exchangers according to the invention can be co-current exchangers or against the tide. They can be bath type vaporizers (to thermosiphon) or film. Channels can be rectangular or cylindrical or a combination of the previous two.

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  • 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)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
EP00400094A 1999-02-01 2000-01-14 Wärmatauscher, insbesondere Plattenwärmetauscher für Luftzerlegungsvorrichtung Withdrawn EP1026468A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9901098A FR2789165B1 (fr) 1999-02-01 1999-02-01 Echangeur de chaleur, notamment echangeur de chaleur a plaques d'un appareil de separation d'air
FR9901098 1999-02-01

Publications (1)

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EP1026468A1 true EP1026468A1 (de) 2000-08-09

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Country Link
US (1) US6347662B1 (de)
EP (1) EP1026468A1 (de)
JP (1) JP2000227295A (de)
AU (1) AU1135400A (de)
BR (1) BR0000231A (de)
CA (1) CA2295453A1 (de)
CZ (1) CZ2000220A3 (de)
FR (1) FR2789165B1 (de)

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FR2845152A1 (fr) * 2002-10-01 2004-04-02 Air Liquide Echangeur de chaleur a plaques comportant une ailette epaisse, et utilisation d'un tel echangeur de chaleur.
DE10328746A1 (de) * 2003-06-25 2005-01-13 Behr Gmbh & Co. Kg Vorrichtung zum mehrstufigen Wärmeaustausch und Verfahren zur Herstellung einer derartigen Vorrichtung
WO2019025689A1 (fr) * 2017-08-04 2019-02-07 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Élément intercalaire en alliage d'aluminium de fonderie pour un échangeur de chaleur

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DE10022595A1 (de) * 2000-05-09 2001-11-15 Linde Ag Plattenwärmetauscher
US6516874B2 (en) * 2001-06-29 2003-02-11 Delaware Capital Formation, Inc. All welded plate heat exchanger
FR2832336B1 (fr) * 2001-11-22 2004-02-20 Air Liquide Echangeurs thermiques en cuivres brases et leur procede de fabrication par soudage
US20030116311A1 (en) * 2001-12-20 2003-06-26 Fitzpatrick Michael D. High temperature primary surface recuperator air cell
US7188492B2 (en) * 2002-01-18 2007-03-13 Linde Aktiengesellschaft Plate heat exchanger
FR2843059B1 (fr) * 2002-07-30 2005-02-25 Air Liquide Echangeurs thermiques en cuivre brases et leur procede de fabrication par soudage
FR2853723B1 (fr) * 2003-04-10 2007-03-30 Air Liquide Procede et installation de traitement d'un bain de liquide riche en oxygene recueilli en pied d'une colonne de distillation cryogenique
SE527509C2 (sv) * 2003-10-17 2006-03-28 Alfa Laval Corp Ab Lödd plattvärmeväxlare med plattor av i huvudsak rostfritt stål och förfarande för tillverkning av en sådan plattvärmeväxlare
EP1762807B2 (de) * 2005-09-07 2016-12-28 Modine Manufacturing Company Wärmetauscher
FR2884436B1 (fr) * 2005-04-13 2007-07-20 Air Liquide Colonne de distillation a dispositif pare-feu
FR2887020B1 (fr) * 2005-06-09 2007-08-31 Air Liquide Echangeur de chaleur a plaques avec structure d'echange formant plusieurs canaux dans un passage
US7306028B2 (en) * 2005-06-23 2007-12-11 Thermal Corp. Modular heat sink
DE102008033302A1 (de) * 2008-07-15 2010-01-21 Linde Aktiengesellschaft Ermüdungsfester Plattenwärmetauscher
CN101806529A (zh) * 2010-03-12 2010-08-18 杭州杭氧股份有限公司 一种整体式主换热器与过冷器
US8979983B2 (en) 2012-12-13 2015-03-17 Hamilton Sundstrand Corporation Air separation module manifold flow structure and system
PL2770286T3 (pl) * 2013-02-21 2017-10-31 Linde Ag Sposób i urządzenie do pozyskiwania tlenu pod wysokim ciśnieniem i azotu pod wysokim ciśnieniem
US20140352933A1 (en) * 2013-05-28 2014-12-04 Hamilton Sundstrand Corporation Core assembly for a heat exchanger and method of assembling
US10823511B2 (en) * 2017-06-26 2020-11-03 Raytheon Technologies Corporation Manufacturing a heat exchanger using a material buildup process

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EP0578218A2 (de) * 1992-07-08 1994-01-12 Air Products And Chemicals, Inc. Reformierung in Wärmeaustauscher mit von Rippen versehenen Platten

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2845152A1 (fr) * 2002-10-01 2004-04-02 Air Liquide Echangeur de chaleur a plaques comportant une ailette epaisse, et utilisation d'un tel echangeur de chaleur.
EP1406057A1 (de) * 2002-10-01 2004-04-07 L'AIR LIQUIDE, Société Anonyme à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Plattenwärmetauscher mit dicker Rippe
US6951245B1 (en) 2002-10-01 2005-10-04 L'Air Liquide, Société Anonyme à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude Plate-type heat exchanger comprising a thick fin, and use of such a heat exchanger
DE10328746A1 (de) * 2003-06-25 2005-01-13 Behr Gmbh & Co. Kg Vorrichtung zum mehrstufigen Wärmeaustausch und Verfahren zur Herstellung einer derartigen Vorrichtung
WO2019025689A1 (fr) * 2017-08-04 2019-02-07 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Élément intercalaire en alliage d'aluminium de fonderie pour un échangeur de chaleur
FR3069919A1 (fr) * 2017-08-04 2019-02-08 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Element intercalaire en alliage d'aluminium de fonderie pour un echangeur de chaleur

Also Published As

Publication number Publication date
JP2000227295A (ja) 2000-08-15
US6347662B1 (en) 2002-02-19
FR2789165B1 (fr) 2001-03-09
BR0000231A (pt) 2000-11-14
CZ2000220A3 (cs) 2001-10-17
FR2789165A1 (fr) 2000-08-04
AU1135400A (en) 2000-08-03
CA2295453A1 (en) 2000-08-01

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