EP0566435B1 - Echangeur de chaleur à ruissellement et installation de distillation d'air comportant un tel échangeur - Google Patents

Echangeur de chaleur à ruissellement et installation de distillation d'air comportant un tel échangeur Download PDF

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Publication number
EP0566435B1
EP0566435B1 EP93400746A EP93400746A EP0566435B1 EP 0566435 B1 EP0566435 B1 EP 0566435B1 EP 93400746 A EP93400746 A EP 93400746A EP 93400746 A EP93400746 A EP 93400746A EP 0566435 B1 EP0566435 B1 EP 0566435B1
Authority
EP
European Patent Office
Prior art keywords
exchanger
liquid
passages
exchanger according
horizontal
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.)
Expired - Lifetime
Application number
EP93400746A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0566435A1 (fr
Inventor
Jean-Yves Lehman
Christiane Muller
Frédéric Rousseau
Cécile Tosi
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.)
Air Liquide SA
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
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 pour lEtude et lExploitation des Procedes Georges Claude filed Critical Air Liquide SA
Publication of EP0566435A1 publication Critical patent/EP0566435A1/fr
Application granted granted Critical
Publication of EP0566435B1 publication Critical patent/EP0566435B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • 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
    • F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
    • F25J3/04872—Vertical layout of cold equipments within in the cold box, e.g. columns, heat exchangers etc.
    • F25J3/04878—Side by side arrangement of multiple vessels in a main column system, wherein the vessels are normally mounted one upon the other or forming different sections of the same 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S62/00—Refrigeration
    • Y10S62/902—Apparatus
    • Y10S62/903—Heat exchange structure

Definitions

  • the present invention relates to a liquid flow heat exchanger for vaporizing a liquid by heat exchange with a second fluid, of the type comprising a parallelepipedic body formed by an assembly of parallel vertical plates defining between them a multitude of flat passages distributed in a set of vaporization passages and in a set of heating passages, each passage, in its current heat exchange part, containing a spacer wave with vertical generators, means for distributing the liquid being provided at the upper end of the exchanger for distributing the liquid over the entire length of the vaporization passages, and means being provided for sending the second fluid into the heating passages.
  • Such an exchanger is known, for example, from document EP-A-0 130 122. It applies in particular to air distillation installations.
  • the liquid oxygen which is in the bottom of the low pressure column is vaporized by heat exchange with the nitrogen gas at the head of the medium pressure column.
  • the temperature difference between oxygen and nitrogen made necessary by the structure of the heat exchanger imposes the operating pressure of the medium pressure column. It is therefore desirable that this temperature difference is as small as possible, in order to minimize the expenses linked to the compression of the air to be treated injected into the medium pressure column.
  • EP-A-0 130 122 in the name of The Applicant has proposed a particularly efficient method of distributing liquid oxygen.
  • the object of the invention is to make it possible to increase the height of such a heat exchanger or, at a given height, to reduce the pressure drop of the flow of vaporized oxygen.
  • a heat exchanger of the aforementioned type characterized in that said distribution means are arranged in compartments closed at their upper end and each located above a heating passage, of which it is separated by a horizontal bar, in that a horizontal slot, extending over the entire length of the exchanger, just above the bar, puts the lower part of the compartment in free communication with an adjacent vaporization passage, and in that the spray passages are open at their two upper and lower ends, over their entire length, and contain at most one wave-spacer with vertical generators at any point of their height.
  • the invention also relates to an air separation installation by distillation, of the type comprising a first distillation column. operating under relatively high pressure, a second distillation column operating under relatively low pressure, and a heat exchanger enabling the liquid oxygen in the tank of the second column to be placed in heat exchange relationship with the top nitrogen gas of the first column, characterized in that the heat exchanger is as defined above, and in that the installation comprises supply means for supplying liquid oxygen to said liquid distribution means, and means for supplying the heating passages with gaseous nitrogen.
  • Figure 1 illustrates a possibility of installing an oxygen-nitrogen heat exchanger in an air distillation installation of the double column type.
  • This installation comprises a medium pressure column 1 at the bottom of which the air to be treated is injected, under a pressure of the order of 6 bars absolute.
  • the oxygen-enriched liquid which is collected in the tank of column 1 is sent under reflux in the middle of the height of a second column (not shown), called low pressure column, which operates slightly above atmospheric pressure.
  • the nitrogen gas which is at the head of column 1 is brought into indirect heat exchange relationship with the liquid oxygen collected in the bottom of the low pressure column; the resulting condensed nitrogen serves as reflux in column 1 and in the low pressure column, while the resulting vaporized oxygen is returned to the bottom of the low pressure column.
  • the two distillation columns can in particular be of the packed type, which also contributes to the energy gain by lowering the operating pressure of the installation, which is that of column 1.
  • the exchanger 2 consists of a sealed envelope 3, the main height of which contains a set of parallel plates 4 of rectangular aluminum shape, with a length of the order of 1 to 1.5 m and a height of the order of 3 to 7 m, between which waves also made of aluminum are fixed by brazing.
  • the latter can be controlled by a bath level regulator 5, or, alternatively, by a flow regulator.
  • the casing 3 forms a dome 7 which contains the bath 5. From this dome leaves a pipe 8 for returning to the bottom of the low pressure column of the vaporized oxygen coming from the bath 5, resulting from the heat inputs at the level of the pump and the pipes, and part of the oxygen vaporized in the exchanger 2.
  • the set of plates 4 is supplied at its upper part with nitrogen gas at 6 bars by a horizontal supply box 9, located under the bath 5, which communicates by a pipe 10 with the head of the medium pressure column.
  • the evacuation of the condensed nitrogen is carried out at the base of the plates 4 by a horizontal collecting box 11 which communicates by a pipe 12 with a guarded channel 13 arranged at the head of the column 1.
  • On the box 11 is stuck a pipe 14 evacuation of uncondensable rare gases.
  • a pipe 15 connects the tank of the low pressure column to the space located in the casing 3, below the plates 4. This pipe penetrates vertically into this space through the bottom point of the casing 3, and its upper end is surmounted by a conical deflector 16. From the bottom of the casing 3 also leaves a pipe 17 intended to return to the bottom of the low pressure column the excess liquid oxygen.
  • the exchanger has a parallelepiped shape, and the casing 3 is defined by the edges of the plates 4 and by spacer bars which close the passages that these plates define, except at the entry and exit locations of the fluids.
  • the plates 4 define a multitude of passages intended alternately for the flow of oxygen (passages 18) and for the flow of nitrogen (passages 19). Over most of their height, the passages 18 and 19 each contain a spacer wave 20 made of a corrugated perforated aluminum sheet with vertical generators.
  • the waves 20 of the nitrogen passages end, at the top as well as the bottom, before the waves 20 of the oxygen passages.
  • these waves of the passages 20 are extended by oblique waves of nitrogen collection (not shown) which lead to the entry of the manifold 11.
  • these same waves 20 are extended by oblique waves 21 of nitrogen distribution which emerge, through a side window 21A of the exchanger, at the outlet of the feed box 9.
  • the nitrogen passages 19 are closed by horizontal bars 22.
  • Other horizontal bars (not shown) close the lower end of the nitrogen passages below the nitrogen collection areas.
  • each nitrogen passage is extended by a compartment 23 for distributing liquid oxygen closed at the upper end of the exchanger by a horizontal bar 24.
  • the compartment 23 contains, from top to bottom: an oblique spacer wave 25 (or, as a variant, a perforated wave with horizontal generators) for rough distribution of liquid oxygen over the entire length of the compartment, this wave opening out laterally, via a side window 26 of the exchanger, in bath 5 ( Figure 2); a perforated bar 27 for predistribution of liquid oxygen; and a lining 28 for fine distribution of liquid oxygen.
  • a free space 29 is provided between this lining and the upper surface of the bar 22.
  • the perforated bar 27 is machined from a rectangular blank whose thickness is equal to the spacing of the plates 4, ie of the order of 5 to 15 mm, and whose length is equal to that of these plates.
  • Each recess 31 is located longitudinally opposite a recess 30 and overlaps the latter in height, so that there is, roughly halfway through the thickness of the bar (FIG. 4), a thin vertical wall 32 common to the two recesses. This wall is pierced with a circular hole 33.
  • the holes 33 are distributed at regular intervals along the perforated bar 27.
  • the lining 28 is constituted by a wave with horizontal generators (so-called “hard way” arrangement with respect to the flow of liquid oxygen) not perforated but of the "serrated" type. This means that at regular intervals, each horizontal or pseudo-horizontal facet of the wave is provided with a flat offset upward by a quarter of a wave step.
  • the width of the punctures, measured along a generatrix of the wave, is of the same order as the distance which separates each of them from the two adjacent punctures located on the same facet.
  • the oxygen vaporization passages 18 are open at their upper and lower ends. They contain the wave 20 from the lower end to the level of the bars 22, are devoid of any wave opposite the space 29, then, from the upper level of this space 29 to their upper end, they contain another spacer wave 20A similar to wave 20 but not larger.
  • the region of each wave-free passage 18 communicates freely with the space 29 of an adjacent passage 19 through a horizontal slot 34 of the same height extending over the entire length of the exchanger.
  • one plate out of two is continuous over the whole the extent of the exchanger, while one plate out of two is in fact made up of a rectangular plate 4A which extends upwards only to the bar 22, and of a rectangular plate 4B which delimits compartment 23 for dispensing liquid oxygen.
  • the upper surface 35 of the bar 22 is inclined laterally so as to descend from the adjacent plate 4 to the upper edge of the facing plate 4A. By virtue of a recess of the bar 22, this surface extends slightly beyond the face of the plate 4A which delimits the passage 18.
  • the liquid oxygen bath 5 is maintained at an approximately constant level, without exceeding the upper face of a vertical plate 5A welded on the exchanger above the windows 26.
  • the liquid oxygen penetrates laterally in the compartments 23, by one of their ends through the windows 26.
  • the nitrogen gas at 6 absolute bars enters the upper part of the passages 19, by one end of these passages, via the box 9 and the waves distribution 21.
  • the liquid oxygen thus forms a column of liquid of practically uniform height above all the holes 33. It is predistributed over the entire length of the passages 18 into a number of jets 36 by these holes 33, then falls freely on the lining 28, which, by its constitution and its arrangement, ensures a fine distribution of the liquid oxygen all along the passages 18. The liquid oxygen therefore falls uniformly on the inclined surface 35 of the bars 22, then pours through the slots 34 in the passages 18.
  • a film of liquid oxygen thus flows over all the metal surfaces contained in the passages 18, that is to say on the plates 4 and 4A and on waves 20, and it partially vaporizes by indirect heat exchange with nitrogen being condensed from top to bottom in the alternate passages 19.
  • the passages 18 are not only open upwards and downwards, but also free as much as possible, over their entire height, of obstacles to the flow of oxygen gas. Indeed, at any point of their height, these passages are either empty (opposite the slot 34), or provided with a simple wave 20, 20A with vertical generators and with relatively large pitch. Wave 20 improves the heat exchange with nitrogen by fin effect, while wave 20A only serves as a spacer and can even possibly be partially eliminated.
  • the holes 33 have a horizontal axis and there is a dead end 37 on the rear face of the bar, below these holes. Any solid impurities contained in the liquid oxygen can thus be deposited in these dead ends, which protects the holes 33 against the risks of clogging.
  • the configuration of the envelope 3 in the region of the liquid oxygen bath 5 forms a cul-de-sac 38 adjacent to the entry windows 26 and located under these, which allows the largest solid impurities to settle in this dead end, leaving the supply line 6, as indicated in 39 in Figure 2.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP93400746A 1992-04-17 1993-03-23 Echangeur de chaleur à ruissellement et installation de distillation d'air comportant un tel échangeur Expired - Lifetime EP0566435B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9204804A FR2690231B1 (fr) 1992-04-17 1992-04-17 Echangeur de chaleur a ruissellement et installation de distillation d'air comportant un tel echangeur.
FR9204804 1992-04-17

Publications (2)

Publication Number Publication Date
EP0566435A1 EP0566435A1 (fr) 1993-10-20
EP0566435B1 true EP0566435B1 (fr) 1996-04-24

Family

ID=9429022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93400746A Expired - Lifetime EP0566435B1 (fr) 1992-04-17 1993-03-23 Echangeur de chaleur à ruissellement et installation de distillation d'air comportant un tel échangeur

Country Status (9)

Country Link
US (1) US5321954A (ru)
EP (1) EP0566435B1 (ru)
JP (1) JPH0618166A (ru)
CN (1) CN1078801A (ru)
CA (1) CA2094087A1 (ru)
DE (1) DE69302319T2 (ru)
ES (1) ES2086896T3 (ru)
FR (1) FR2690231B1 (ru)
RU (1) RU2077010C1 (ru)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5438836A (en) * 1994-08-05 1995-08-08 Praxair Technology, Inc. Downflow plate and fin heat exchanger for cryogenic rectification
FR2728669B1 (fr) * 1994-12-21 1997-04-11 Air Liquide Appareil a circulation de fluide
FR2728670B1 (fr) * 1994-12-23 1997-03-21 Air Liquide Chambre d'entree/sortie de fluide, et appareil a circulation de fluide correspondant
FR2733039B1 (fr) * 1995-04-14 1997-07-04 Air Liquide Echangeur de chaleur a plaques brassees, et procede correspondant de traitement d'un fluide diphasique
US5649433A (en) * 1995-06-29 1997-07-22 Daido Hoxan Inc. Cold evaporator
US5709264A (en) * 1996-03-18 1998-01-20 The Boc Group, Inc. Heat exchanger
GB2316478A (en) * 1996-08-20 1998-02-25 Imi Marston Ltd Liquefaction heat exchanger
FR2786858B1 (fr) * 1998-12-07 2001-01-19 Air Liquide Echangeur de chaleur
ATE246790T1 (de) * 1999-03-17 2003-08-15 Linde Ag Vorrichtung und verfahren zur zerlegung eines gasgemischs bei niedriger temperatur
US6349566B1 (en) 2000-09-15 2002-02-26 Air Products And Chemicals, Inc. Dephlegmator system and process
US6393866B1 (en) 2001-05-22 2002-05-28 Praxair Technology, Inc. Cryogenic condensation and vaporization system
US7266976B2 (en) * 2004-10-25 2007-09-11 Conocophillips Company Vertical heat exchanger configuration for LNG facility
FR2895069B1 (fr) * 2005-12-20 2014-01-31 Air Liquide Appareil de separation d'air par distillation cryogenique
CN102650491B (zh) * 2012-05-10 2013-10-16 西安交通大学 空分板翅型膜式主冷液体分布器
JP5913245B2 (ja) * 2013-09-24 2016-04-27 株式会社フィルテック 張り合わせ流体熱交換装置
US10962294B2 (en) * 2018-12-07 2021-03-30 Hamilton Sundstrand Corporation Dual pass heat exchanger with drain system
US11774189B2 (en) * 2020-09-29 2023-10-03 Air Products And Chemicals, Inc. Heat exchanger, hardway fin arrangement for a heat exchanger, and methods relating to same

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
US3282334A (en) * 1963-04-29 1966-11-01 Trane Co Heat exchanger
US3992168A (en) * 1968-05-20 1976-11-16 Kobe Steel Ltd. Heat exchanger with rectification effect
FR2547898B1 (fr) * 1983-06-24 1985-11-29 Air Liquide Procede et dispositif pour vaporiser un liquide par echange de chaleur avec un deuxieme fluide, et leur application a une installation de distillation d'air
US4721164A (en) * 1986-09-04 1988-01-26 Air Products And Chemicals, Inc. Method of heat exchange for variable-content nitrogen rejection units
FR2665755B1 (fr) * 1990-08-07 1993-06-18 Air Liquide Appareil de production d'azote.
US5122174A (en) * 1991-03-01 1992-06-16 Air Products And Chemicals, Inc. Boiling process and a heat exchanger for use in the process

Also Published As

Publication number Publication date
CN1078801A (zh) 1993-11-24
JPH0618166A (ja) 1994-01-25
DE69302319T2 (de) 1996-09-12
RU2077010C1 (ru) 1997-04-10
DE69302319D1 (de) 1996-05-30
FR2690231B1 (fr) 1994-06-03
ES2086896T3 (es) 1996-07-01
FR2690231A1 (fr) 1993-10-22
US5321954A (en) 1994-06-21
CA2094087A1 (fr) 1993-10-18
EP0566435A1 (fr) 1993-10-20

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