CN102216709A - Main exchange line and cryogenic distillation air separation unit incorporating such an exchange line - Google Patents

Main exchange line and cryogenic distillation air separation unit incorporating such an exchange line Download PDF

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Publication number
CN102216709A
CN102216709A CN2008801064126A CN200880106412A CN102216709A CN 102216709 A CN102216709 A CN 102216709A CN 2008801064126 A CN2008801064126 A CN 2008801064126A CN 200880106412 A CN200880106412 A CN 200880106412A CN 102216709 A CN102216709 A CN 102216709A
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China
Prior art keywords
assembly
replacement part
plume
exchange
exchange system
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Pending
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CN2008801064126A
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Chinese (zh)
Inventor
B·达维迪安
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LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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Application filed by LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Publication of CN102216709A publication Critical patent/CN102216709A/en
Pending legal-status Critical Current

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    • 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
    • F28D9/0031—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 paired plates touching each other
    • F28D9/0037—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 paired plates touching each other the conduits for the other heat-exchange medium also being formed by paired plates touching each other
    • 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
    • F25J3/04193—Division of the main heat exchange line in consecutive sections having different functions
    • 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
    • F25J3/044—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 single pressure main column system only
    • 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.
    • 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
    • F25J2200/00—Processes or apparatus using separation by rectification
    • F25J2200/72—Refluxing the column with at least a part of the totally condensed overhead gas
    • 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
    • F25J2290/40—Vertical layout or arrangement of cold equipments within in the cold box, e.g. columns, condensers, heat exchangers etc.
    • 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
    • F25J2290/42—Modularity, pre-fabrication of modules, assembling and erection, horizontal layout, i.e. plot plan, and vertical arrangement of parts of the cryogenic unit, e.g. of the cold box
    • 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
    • F28F2230/00—Sealing means

Abstract

An exchange line, designed to be incorporated into an air separation unit, comprises at least two exchange assemblies, the 2 assemblies being connected in parallel, each assembly comprising at least two exchange bodies (11A, 11B, 11C, 13A, 13B, 13C), preferably at least three exchange bodies, connected together in series.

Description

Host switching system and the low temperature distillation air separation equipment that is combined with this exchange system
Technical field
The present invention relates to a kind of equipment that uses low temperature distillation to come separation of air.
Background technology
As everyone knows, aluminium soldering plate interchanger can be used for low-temperature switch.
But for mini-plant, manufacturing cost is very high.This technology mainly is applicable to " customization (ser mesure) " equipment, but for the cost of equipment than for the even more important mini-plant of its performance, the solution of " customization " be not a kind of justifiable/appropriate selection.
In addition, the solution of " customization " can cause the very long manufacturing lead time (d é laisde fabrication) usually.
However, the advantage of this class interchanger is to carry out heat exchange between multiple fluid.
According to the present invention, host switching system is made up of the interchanger of one group of standardized soldering corrosion resistant plate type, and these interchangers can be installed in the heat insulation ice chest of perlite conventional or vacuum.
The interchanger of each board type can carry out heat exchange at most between two kinds of fluids.
This class interchanger (for example being provided by Tranter Inc., Swep or Alfa Laval company) allows at two kinds of fluids---promptly, hot fluid and cold fluid---between carry out heat exchange.
In the cryogenic nitrogen generator, three kinds of fluids are arranged usually:
● a kind of hot fluid: air;
● two kinds of cold fluids: the rich solution of nitrogen and vaporization (LRV).
In order to use these interchangers, be two-way (preferably according to the ratio of two kinds of cold fluid flow or by the pro rate of the thermic load of every kind of fluid) with the air flow point, so that in two parallel exchanges, carry out whole heat exchanges:
● one is air/nitrogen exchange;
● one is the rich solution exchange of air/vaporization.
The air stream that enters two interchangers can utilize balanced valve to come separately, or separates naturally under the situation of the pressure drop balance of air loop in two interchangers.
Air stream is divided into the overall performance not influence of two-way for exchange,, does not have central exit/output (sortie) because initial interchange graph (diagramme d ' é change) almost walks abreast.When air stream was correctly separated, two exchange process that have parallel interchange graph respectively can carry out concurrently.
In addition, the length of these interchangers quite limited (generally being shorter than 1 meter), this is for reaching 200 ℃ thermograde between hot junction that exchanges and cold junction and being very short for the little temperature difference (Δ T logarithmic mean is between 2 to 10 ℃).
Summary of the invention
This makes a plurality of interchangers that need to use multi channel heat exchanger and/or use to be in series realize heat exchange.An object of the present invention is to provide a kind of exchange system that is designed for being attached in the air separation equipment, this exchange system comprises: at least two exchange assemblies, described assembly is parallel to be connected, and each assembly comprises at least two replacement parts connecting of being one another in series, preferred at least three replacement parts; Be used for first plume to be cooled sent into first assembly so that the device that this first plume is cooled at each replacement part of first assembly; Be used for second plume to be cooled sent into second assembly so that the device that this second plume is cooled at each replacement part of second assembly; Be used for first fluid to be heated sent into the first exchange assembly so as this first fluid at the heated device of each replacement part of first assembly; Be used for second fluid to be heated sent into the second exchange assembly in case this first fluid at the heated device of each replacement part of second assembly; It is characterized in that, there are not device or means (moyen) that part first plume is cooled in second assembly, there are not device or means that part second plume is cooled in first assembly, do not exist and to make part first fluid heated device or means and do not exist and to make part second fluid heated device or means in first assembly in second assembly.
Preferably, exchange system comprises:
-be used for the stream in the cooling of described two assembly downstreams is divided into the device of first plume and second plume, so that first plume to be cooled and second plume one after the other pass through each replacement part of assembly separately;
-only two the exchange assemblies.
The replacement part of an assembly can be arranged along their length direction, and (perhaps) is arranged such that their length is parallel with the length of adjacent replacement part, and (perhaps) is arranged such that their length is parallel with the length of adjacent replacement part but the arrangement that misplaces.
Each replacement part can be the stacked body (turning that may have sphering) of rectangular slab, or the stacked body of irregular hexagonal plate, on each side of each replacement part, be positioned with Connection Element, so that this replacement part is connected with adjacent replacement part.
One of them replacement part is the standardization interchanger, preferably wherein at least two replacement parts with a kind of model.
Another object of the present invention provides a kind of air separation equipment, this air separation equipment comprises: the destilling tower with top condenser, as the described exchange system of one of claim 1-9, be used for compressed and send into the device of each exchange assembly through the air that purifies, be used for extracting out the device of nitrogen from tower, be used for nitrogen is sent into the device of the first exchange assembly, be used for liquid at the bottom of the tower is sent into the device of condenser, be used for from condenser extract out vaporization liquid device and be used for the liquid of vaporization is sent into the device of second assembly.
This equipment also can be drawn together the device of the amount that is used for regulating the air of sending into the exchange assembly.
Self is stacked at least two replacement parts in the same assembly, and preferably self is stacked all.
A further object of the present invention provides a kind of method of cooling off air in exchange system, this exchange system comprises: at least two exchange assemblies, described assembly is parallel to be connected, and each assembly comprises at least two replacement parts connecting of being one another in series, preferred at least three replacement parts; Be used for first strand of air stream to be cooled sent into first assembly so that the device that this first plume is cooled at each replacement part of first assembly; Be used for second strand of air stream to be cooled sent into second assembly so that the device that this second plume is cooled at each replacement part of second assembly; Be used for first fluid to be heated sent into the first exchange assembly so as this first fluid at the heated device of each replacement part of first assembly; Be used for second fluid to be heated sent into the second exchange assembly in case this first fluid at the heated device of each replacement part of second assembly; It is characterized in that all described first plume only is admitted in first assembly, all described second plume only is admitted in second assembly, and whole described first fluids only are admitted in first assembly and whole described second fluid only is admitted in second assembly.
Possibly, first and second plumes enter assembly separately under different pressure and/or different temperature.
Possibly, first and second plumes are in the mixed downstream of first and second assemblies.
Description of drawings
The present invention is described below with reference to the accompanying drawings in more detail.Fig. 1 shows according to exchange system of the present invention; Fig. 2 shows the exchange assembly that is suitable for forming according to the part of exchange system of the present invention to Fig. 5; Show according to air separation equipment of the present invention with Fig. 6.
The specific embodiment
In Fig. 1, heat-exchange system according to the present invention comprises two exchange assemblies, and each exchange assembly comprises three replacement parts.Preferably, these six replacement parts can be identical, and be the standardization interchanger by the same model of same manufacturer manufacturing.The only heat exchange between two kinds of fluids of each replacement part.In use, self is stacked to 13C for replacement part 13A, and wherein 13C is in below, and 13A is in the top.Equally, in use, also self is stacked to 11C for replacement part 11A, and wherein 11C is in below, and 11A is in the top.
Want cooled air 1 to be divided into two-way, form two plumes 3,5 by two valves 7,9.Wherein flow 3 and be admitted to first assembly and be not admitted to second assembly, this first assembly comprises replacement part 11A, 11B and the 11C that is connected in series.Stream 5 is admitted to second assembly and is not admitted to first assembly, and this second assembly comprises replacement part 13A, 13B and the 13C that is connected in series.Described air stream is not except being mixed together the downstream of last replacement part 11C, 13C.First and second plumes are under different pressures and/or different temperatures, and---for example being compressed to different pressure---enters assembly separately.
The rich solution LRV17 of the vaporization of flowing out from the condenser of a simple tower is admitted to replacement part 11C, 11B and the 11A successively, thereby is heated to environment temperature.The nitrogen 19 that flows out from same tower is admitted to replacement part 13C, 13B and 13A.
Two in the described assembly one or the described assembly can be with replacing to the assembly as shown in Fig. 5 as Fig. 2.
In Fig. 2 and Fig. 3, the inlet of replacement part is arranged on the length of this replacement part.Arrange thereby can imagine the length dislocation that makes them like that these replacement parts are arranged to as shown in Figure 2, connect by pipeline 31 perpendicular to the length axes of replacement part.In use, replacement part 13A is positioned at the top of replacement part 13C, and replacement part 13B is positioned at the top of replacement part 13D.Perhaps as shown in Figure 3, described length is parallel to each other, can utilize be arranged between the replacement part 13, perpendicular to the heat insulation 25 of the length axes of replacement part.Replacement part 13 passes through to connect perpendicular to the pipeline 31 of the length axes of replacement part.In use, self is stacked for described replacement part, wherein 13A topmost and 13E in the bottom.
The replacement part 13E of bottom tilts, and this is to drip because might have liquid air in the exit.
In Fig. 4, the same among the layout of replacement part 11 and Fig. 1.
Fig. 5 show be applicable to have irregular hexagonal cross-section replacement part for example
Figure GPA00001049271800051
Special layout.Self is stacked for replacement part 11A, 11B and 11C, utilizes Connection Element 21 to fill space on each side of replacement parts, is rectangle to form overall sectional, has the element of four fluid intakes/outlet 23 in the end.This monoblock type (monolithic) element is easy to install and supporting.
Though as if this interchanger arrange the impression that becomes more complicated to a kind of making of people, but it makes it possible to use not expensive standardization interchanger with the very short manufacturing lead time really: therefore low-temperature switch no longer becomes the critical aspects when making air separation equipment.
Fig. 6 shows a kind of air separation equipment that is used to produce nitrogen, and this air separation equipment comprises one according to exchange system of the present invention.Exchange system shown in the figure is the exchange system shown in Fig. 1 and Fig. 4, but the exchange system among obvious Fig. 2, Fig. 3 and Fig. 5 can be bonded to wherein too.The air 3,5 that comes out from two groups of interchangers is admitted to the tower 33.Nitrogen 19 is drawn out of from the top of tower, and is admitted in the group 13, and is sent in second group 11 from the rich solution LRV17 of the vaporization of top condenser 35.

Claims (15)

1. exchange system that is designed for being attached in the air separation equipment, comprise: at least two exchange assemblies (11,13), these at least two exchange assemblies comprise first assembly and second assembly, described assembly is parallel to be connected, each assembly comprises at least two replacement parts (11A, 11B, the 11C that is one another in series and connects, 11D, 13A, 13B, 13C), preferred at least three replacement parts; Be used for first plume to be cooled sent into first assembly so that the device that this first plume is cooled at each replacement part of first assembly; Be used for second plume to be cooled sent into second assembly so that the device that this second plume is cooled at each replacement part of second assembly; Be used for first fluid to be heated (17) sent into first assembly so as this first fluid each replacement part of first assembly (11A, 11B, 11C, 11D) in heated device; Be used for second fluid (19) to be heated sent into second assembly (13) in case this second fluid at second assembly (13A, 13B, heated device in each replacement part 13C); It is characterized in that, there are not device or means that part first plume is cooled in second assembly, there are not device or means that part second plume is cooled in first assembly, do not exist and to make part first fluid heated device or means and do not exist and to make part second fluid heated device or means in first assembly in second assembly.
2. exchange system according to claim 1, it is characterized in that this exchange system comprises the device (3,5 that is used for the stream in the cooling of described two assembly downstreams is divided into first plume and second plume, 7,9), so that first plume to be cooled and second plume one after the other pass through each replacement part (11A, the 11B of assembly separately, 11C, 11D, 13A, 13B and 13C).
3. exchange system according to claim 1 and 2 is characterized in that, this exchange system comprises two exchange assemblies (11,13).
4. according to the described exchange system of one of aforementioned claim, it is characterized in that, and the replacement part of an assembly (11A, 11B, 11C, 11D, 13A, 13B 13C) arranges along their length direction.
5. according to the described exchange system of one of aforementioned claim, it is characterized in that, and the replacement part of an assembly (11A, 11B, 11C, 13A, 13B 13C) is arranged such that their length is parallel to the length of adjacent replacement part.
6. according to the described exchange system of one of aforementioned claim, it is characterized in that, and the replacement part of an assembly (11A, 11B, 11C, 13A, 13B 13C) is arranged such that their length is parallel to the length and the dislocation arrangement of adjacent replacement part.
7. according to the described exchange system of one of aforementioned claim, it is characterized in that, and each replacement part (11A, 11B, 11C, 11D, 13A, 13B 13C) is the stacked body (turning that may have sphering) of rectangular slab.
8. according to the described exchange system of one of claim 1-6, it is characterized in that, each replacement part (11A, 11B, 11C, 11D, 13A, 13B 13C) is the stacked body of irregular hexagonal plate, on each side of each replacement part, be positioned with Connection Element, so that this replacement part is connected with adjacent replacement part.
9. according to the described exchange system of one of aforementioned claim, it is characterized in that, and at least one described replacement part (11A, 11B, 11C, 11D, 13A, 13B 13C) is the standardization interchanger, preferably at least two described replacement parts are same models.
10. air separation equipment, comprise: destilling tower (33) with top condenser (35), as the described exchange system (11 of one of claim 1-9,13), be used for compressed and send into the device (3 of each exchange assembly through the air that purifies, 5,7,9), be used for extracting out the device of nitrogen (17), be used for nitrogen is sent into the device of the first exchange assembly (11), be used for liquid at the bottom of the tower is sent into the device of condenser from tower, be used for from condenser extract out vaporization liquid (19) device and be used for the liquid of vaporization is sent into the device of second assembly (13).
11. air separation equipment according to claim 10 is characterized in that, this air separation equipment comprises the device (7,9) of the amount that is used for regulating the air of sending into the exchange assembly.
12. according to claim 10 or 11 described air separation equipments, it is characterized in that, and at least two replacement parts of same exchange assembly (11A, 11B, 11C, 11D, 13A, 13B, 13C) self is stacked, and preferably self is stacked all.
13. the method for a cooling air in exchange system, this exchange system comprises: at least two exchange assemblies (11,13), described assembly connects concurrently, and each assembly comprises at least two replacement part (11A that are one another in series and connect, 11B, 11C, 11D, 13A, 13B, 13C), preferred at least three replacement parts; Be used for first strand of air stream to be cooled sent into first assembly so that the device that this first plume is cooled at each replacement part of first assembly; Be used for second strand of air stream to be cooled sent into second assembly so that the device that this second plume is cooled at each replacement part of second assembly; Be used for first fluid to be heated (17) sent into the first exchange assembly (11) so as this first fluid each replacement part of first assembly (11A, 11B, 11C, 11D) in heated device; Be used for second fluid (19) to be heated send into second the exchange assembly (13) in case this first fluid at second assembly (13A, 13B, heated device in each replacement part 13C); It is characterized in that all described first plume only is admitted in first assembly, all described second plume only is admitted in second assembly, and whole described first fluids only are admitted in first assembly and whole described second fluid only is admitted in second assembly.
14. method according to claim 13 is characterized in that, described first plume and second plume enter in their assemblies separately under different pressure and/or different temperature.
15., it is characterized in that described first plume and second plume are in the mixed downstream of first assembly and second assembly according to claim 13 or 13 described methods.
CN2008801064126A 2007-09-12 2008-09-09 Main exchange line and cryogenic distillation air separation unit incorporating such an exchange line Pending CN102216709A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0757531 2007-09-12
FR0757531A FR2920866A1 (en) 2007-09-12 2007-09-12 MAIN EXCHANGE LINE AND CRYOGENIC DISTILLATION AIR SEPARATION APPARATUS INCORPORATING SUCH EXCHANGE LINE
PCT/FR2008/051601 WO2009044065A2 (en) 2007-09-12 2008-09-09 Main exchange line and cryogenic distillation air separation unit incorporating such an exchange line

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CN102216709A true CN102216709A (en) 2011-10-12

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CN2008801064126A Pending CN102216709A (en) 2007-09-12 2008-09-09 Main exchange line and cryogenic distillation air separation unit incorporating such an exchange line

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US (1) US20100206004A1 (en)
EP (1) EP2191220A2 (en)
JP (1) JP2011519006A (en)
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EP2191220A2 (en) 2010-06-02
WO2009044065A3 (en) 2011-12-08
WO2009044065A2 (en) 2009-04-09
BRPI0816327A2 (en) 2015-04-14
FR2920866A1 (en) 2009-03-13
US20100206004A1 (en) 2010-08-19

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