Classifications

• • 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
  • 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
  • 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
  • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
  • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
  • F28F9/02—Header boxes; End plates
  • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
• • 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
  • F25J2250/04—Down-flowing type boiler-condenser, i.e. with evaporation of a falling liquid film
• • 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

Definitions

• the liquid oxygen which is in the bottom of the low pressure column is vaporized by heat exchange with the nitrogen gas taken at the top of the medium pressure column.
• the temperature difference inks the oxygen and the nitrogen made necessary by the structure of the heat exchanger imposes the operating pressure of the medium pressure column so it is desirable that this difference in temperature is as small as possible, in order to minimize the expenses related to the compression of the air to be treated injected into the medium-pressure column.
• phase-change exchangers consist of aluminum exchangers with brazed plates and fins, which make it possible to obtain very compact members with a large exchange surface.
• These exchangers consist of plates between which are inserted waves or fins, thus forming a stack of "passages” vaporization and "passages” condensation.
• waves such as straight waves, perforated or “serrated” waves.
• the wave with horizontal generatrix 1 is located between two plates 35 defining a heat exchanger passage which is closed by a bar 7.
• the clearances 31 between the waves and the bars are also indicated in FIG.
• a heat exchanger for vaporizing a liquid by heat exchange with a second fluid comprising a parallelepiped body formed of an assembly of parallel vertical plates defining between them a multitude of flat passages and side bars closing the outlets, means for sending the liquid in a first set of passages and the second fluid in the remaining passages, a packing for dispensing the liquid at the upper end of the passages of said first set, on any the horizontal length of these, by a fine distribution over the entire length of these passages, characterized in that at least one of the side bars has, towards the inside of the exchanger, a curved profile on most of its length and a flat profile over part of its length and in that an edge of the lining contacts the part of its length where the profile is flat.
• the two waves have at least one cut and in that the cutouts of the two waves marry each other and possibly each wave has an L-shaped cutout, so that for a wave, an upper part of the wave has a width I less wide than the rest of the wave which has a width L and for the other wave, a portion less than width I and is narrower than the remainder of the wave which has a width L, where the sum of I and L is equal to the total width of passages or b) the cutout in each wave has a zigzag shape.
• at least two waves, preferably at least three waves, are superimposed, each wave having a width greater than half the total width of the passages and less than the total width of the passages, so that the waves overlap;
• the waves are attached together by staples, locking keys and / or springs;
• the waves are embedded and / or fit together.
• a distillation air separation plant of the type comprising a first distillation column operating under a relatively high pressure, a second distillation column operating under a relatively low pressure, and a heat exchanger making it possible to put the bottom liquid of the second column in heat exchange relation with the overhead gas of the first column, characterized in that the heat exchanger as defined above and in that the installation comprises supply means for supplying the tank liquid to the exchanger and gas supply means for the passages of the exchanger.
• Air separation systems of this type correspond for the known part to a so-called double-column separation apparatus, well known from classic works such as Kerry's "Tieftemperaturtechnik” or “Industrial Gas Handbook”.
• the first model is equipped with two classic sidebars (with curved profile) and the second is equipped with two sidebars whose empty spaces have been filled with aluminum to obtain a flat profile.
• the liquid nitrogen flow rate is approximately 0.7 l / h / channel, which is slightly less than the flow rates conventionally used.
• FIG. 3A shows a portion of the exchanger according to the invention seen from above, all the Figures from Figure 3B, except Figure 12B, show a cut of an exchanger according to the invention seen from the front and Figure 12B represents a lining of the exchanger according to the invention seen from the side.
• FIG. 5 Three superimposed waves 1, 3 and 17 are seen whose waves 3 and 17 contact one edge of the exchanger and the wave 1 contacts the other.
• Each wave consists of two undulations and has the same width, equal to a value between half and the total of the total width of the passages. In this way, the waves overlap forming a central portion having a thickness of six corrugations.
• the waves 1, 3 can be locked together by shims 21 placed between the bars 5 and each wave, as can be seen in FIG. 6.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Separation By Low-Temperature Treatments (AREA)
• Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (2)

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ID=40897275

Family Applications (1)

Country Status (7)

Families Citing this family (3)

Citations (3)

Family Cites Families (13)

• 2008
  • 2008-11-24 FR FR0857951A patent/FR2938904B1/fr not_active Expired - Fee Related
• 2009
  • 2009-11-24 JP JP2011536938A patent/JP2012516425A/ja active Pending
  • 2009-11-24 US US13/130,375 patent/US9086244B2/en active Active
  • 2009-11-24 EP EP09795504.1A patent/EP2368084B1/fr active Active
  • 2009-11-24 WO PCT/FR2009/052269 patent/WO2010058142A2/fr active Application Filing
  • 2009-11-24 CN CN200980146908.0A patent/CN102334002B/zh active Active
  • 2009-11-24 PL PL09795504T patent/PL2368084T3/pl unknown

Patent Citations (3)

Non-Patent Citations (1)

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