WO2016102046A1

WO2016102046A1 - Conducting device for controlling the flow of liquid when feeding two-phase flows in block-in-shell heat exchangers

Info

Publication number: WO2016102046A1
Application number: PCT/EP2015/002462
Authority: WO
Inventors: Stefan Kayser; Steffen Brenner
Original assignee: Linde Aktiengesellschaft
Priority date: 2014-12-23
Filing date: 2015-12-07
Publication date: 2016-06-30
Also published as: AU2015371704A1; CA2972124A1; EP3237824A1; CN107110612A; US20190072340A1; KR20170096055A; MX2017008039A; RU2017120507A; JP2018506012A

Abstract

The invention relates to a heat exchanger (1) for indirectly exchanging heat between a first medium (F1) and a second medium (F2), comprising: a casing (2) which surrounds an encased area (3) for receiving the first medium (F1) and at least one plate heat exchanger (4) for indirectly exchanging heat between the two media (F1, F2), the at least one plate heat exchanger (4) being arranged in the encased area (3) such that the plate heat exchanger can be surrounded by a liquid first medium (F1) phase (L1) which can be found in the encased area (3). In order to introduce the first medium (F1) into the encased area, a distribution device (6) or a distributor channel (6) is arranged above the plate heat exchanger (4) in the encased area (3). The distribution device or the distributor channel (6) has at least one outlet opening (6b) which is oriented downwards and through which a liquid first medium (F1) phase (L1) can exit the distribution device (6) or the distributor channel (6) into the encased area (3). According to the invention, the heat exchanger (1) has a conducting device (10) which is arranged below the distribution device (6) or the distributor channel (6) and which is designed to conduct the liquid first medium (F1) phase (L1) exiting the at least one outlet opening (6b).

Description

description

Conductor for controlling the flow of liquid in the feed of

Two-phase currents in block-to-shell heat exchangers

The invention relates to a heat exchanger according to claim 1.

Such a heat exchanger is used for indirect heat transfer between a first medium and a second medium and has a jacket which surrounds a jacket space for receiving a liquid phase of the first medium, and at least one plate heat exchanger, which serves for the indirect heat transfer between the two media the at least one

Plate heat exchanger is arranged in the mantle space, that he with an im

Mantle space located liquid phase of the first medium is umber, and wherein for introducing a two-phase current of the first medium in the mantle space a distributor, in particular in the form of a distribution channel, above the Plattenwärmeübertragers is arranged in the mantle space, wherein the distribution device with an inlet provided on the mantle, in particular in form of

Inlet neck, is in flow communication, wherein the distribution device or the distribution channel has at least one downwardly directed outlet opening through which the two-phase flow from the distributor or the distribution channel can escape into the jacket space. Spatial terms such as "above" and "below" refer here and below to a heat exchanger arranged as intended or in operation.

A heat exchanger of the type set forth, for example, in "The

The shell is typically referred to as "shell" and the plate heat exchanger as a "block." One such standard is shown as "shell" in the third edition, 2010, page 67 Design of a heat exchanger is therefore also called "block-in-shell" - heat exchanger (other common names are "core-in-shell" or "block-in-kettle" heat exchanger)

A distribution channel of the type described above is further known from EP247221 A2. In addition to the first, to the mantle space open heat transfer passages, the plate heat exchanger in particular closed second

Heat transfer passages on. The second I ledium in the second

Heat transfer passages has no direct contact with the jacket space. The open first heat transfer passages, on the other hand, are typically for the first medium on multiple sides of the plate heat exchanger (e.g.

Underside and the top of the plate heat exchanger) to the shell space permeable. The plate heat exchanger is surrounded by a liquid bath of the first medium, which usually occurs at the bottom as a liquid phase in the plate heat exchanger and at the top than

Two-phase current (from the outlet openings) exits again. The driving force for this is a temperature difference between the second medium in the closed second passages and the first medium in the open first passages. The heat transferred from the second medium in the closed second passages to the first medium in the first passages vaporizes part of the liquid phase of the first medium in the open first passages. The plate heat exchanger in a core-to-shell heat exchanger is commonly operated as a thermosyphon, i.e., in natural circulation.

The feeding of the two-phase flow of the first medium into the separation space of the shell ("shell" or "kettle") was previously carried out by one or more

Inlet on the side of the jacket. In the present case, the part of the jacket space which is available for separating the gas phase of the first medium from the liquid phase of the first medium is referred to as the separation space. The filled with the liquid phase of the first medium part of the jacket space is referred to herein or as Vorlageraum.

Through the distribution channel provided with outlet openings, the incoming two-phase flow can be distributed along the jacket axis (horizontal distribution). In the distribution channel there is already a pre-separation (ie a coarse separation of gas phase and liquid phase). The design of the distribution channel essentially aims at a controlled feed and distribution of the gas phase of the first medium into the shell space. Therefore, relatively high speeds are aimed at entering the separation chamber. An (independent) control of the liquid flow with regard to

Speed and direction when entering the separation chamber is not or insufficiently possible. In unfavorable conditions, in particular, a relatively high flow velocity of the liquid can cause the

Liquid e.g. passes through various deflections in the distribution channel or on the jacket in unwanted areas of the jacket space. Such a region may e.g. be the above-described top of a plate heat exchanger. Under certain circumstances, the operation of the plate heat exchanger or the

Plate heat exchangers are adversely affected. Negative effects can e.g. in the increase of the bubble layer / overflow height due to the increased

Amount of liquid exist so that the circulation is impaired, and continue in a local braking of the circulation, since the incoming liquid from above has an opposite flow direction. Furthermore, local

Temperature variations of the plate heat exchanger result when the inlet flow into the jacket space and the outlet flow from the

Plate heat exchanger have different temperatures. By the energy of the impinging liquid can also liquid upwards in the direction

Spray gas outlet and be carried along there.

On this basis, the invention is therefore the object of a

To provide heat exchanger of the type mentioned, in which the control of the liquid flow of the first medium is improved. This object is achieved by a heat exchanger with the features of claim 1. Advantageous embodiments of the invention are specified in the subclaims and are described below.

According to claim 1 it is provided that the heat exchanger has an at least partially disposed below the distribution channel, additional guide, which is for guiding the from the at least one outlet opening of the

Distributing channels leaking liquid phase of the first medium or

Two-phase current is formed, wherein the at least one

Plate heat exchanger has an upper side, and wherein the guide to it is designed to pass the liquid phase of the first medium away from the top and / or past the top.

This advantageously makes it possible to control and direct the flow of the liquid phase of the first medium entering the jacket space into the core-to-shell heat exchanger. In this case, the flow velocity of the entering liquid into the separation space of a core-in-shell heat exchanger can be reduced in particular by a corresponding design and positioning of the guide. In particular, the guide device may be provided with damping elements which are designed to reduce the energy of the guided flow.

According to one embodiment of the invention it is provided that the

Distribution channel along a longitudinal axis, in particular cylinder axis, of the shell extends, which extends at a properly arranged or in operation located heat exchanger along the horizontal. The guide preferably also extends along this longitudinal axis.

According to one embodiment, it is provided in particular that the

Guiding device is designed to at least part of the first in a

Direction spatial direction from the leaked at least one outlet opening liquid phase in a second spatial direction. In this case, in particular, the second spatial direction differs from the first spatial direction (ie there is a deflection of at least part of the liquid phase), wherein in particular the second spatial direction has a larger horizontal component than the first spatial direction

Spatial direction or e.g. facing towards the mantle. In particular, the first spatial direction runs from top to bottom along or parallel to the vertical.

In particular, the guide device is a non-pressure-bearing component, so that its cross-sectional shape can advantageously be designed freely, essentially without any influence on the strength of the guide device.

According to one embodiment of the invention it is provided that the at least one plate heat exchanger first heat transfer passages for receiving the first medium and second heat transfer passages for receiving the second medium, so that between the two media indirectly heat transferable, and wherein in particular the first heat transfer passages via outlet openings at the top of the at least one Plattenwärmeübertragers are in flow communication with the jacket space, so that the first medium can escape through the outlet openings in the shell space , Relative to a heat exchanger arranged as intended, the upper side of the plate heat exchanger preferably extends in a horizontal plane.

With regard to this top side, it is provided, as already stated, that the guide device is designed to remove the liquid phase of the first medium from the top side and / or at the top side of the at least one side

Passing plate heat exchanger over.

Furthermore, according to an embodiment of the invention, it is provided that the guide device is designed to guide the liquid phase of the first medium such that it does not act upon the upper side.

According to a further embodiment of the invention, it is provided that the guide device has at least one plate-shaped guide element, in particular in the form of a guide plate. The at least one guide element preferably extends along the longitudinal axis of the jacket. In particular, the at least one guide element in this case has a curvature, wherein in particular the guide plate has a convex first side facing the plate heat exchanger, and a second side facing away from the second side, facing away from the plate heat exchanger and / or facing the distributor channel. Instead of a curvature (or in addition), the guide element may also have an inclination, so that the liquid phase of the first medium is conducted away from the upper side of the plate heat exchanger.

According to one embodiment of the invention, the at least one is furthermore

Guide plate arranged so that the emerging from the distributor channel liquid phase impinges on the second side and is guided along this along the top of the at least one plate heat exchanger and / or guided past this.

Furthermore, according to one embodiment of the invention, it is provided that the guide device and / or the guide plate extend along the entire distribution channel along the Distribution channel or the longitudinal axis of the shell extends or only over a portion of the distribution channel.

Furthermore, the at least one guide element to a plurality of

Have passage openings for the first medium, so that at least a portion of the first medium can pass through the at least one baffle or guide element.

According to a further embodiment of the invention it is provided that the guide and / or the at least one guide element are fixed to the distribution channel and / or on the jacket of the heat exchanger. The at least one guiding element may e.g. be determined via a support of the guide to the distribution channel and / or the jacket. Thus, for example, according to one embodiment of the invention, the carrier have a frame which is fixed to the distribution channel and / or on the jacket, wherein in particular the at least one guide element on

Frame is set.

The distribution channel of the heat exchanger according to the invention described above is fixed according to an embodiment of the invention on the jacket, wherein in particular the jacket forms a side wall of the distribution channel. That is, the

Distribution channel is attached to an inside of the shell facing the shell space, wherein the distribution channel, e.g. having a horizontally extended bottom, one edge of which is fixed to the mantle, and the other

(opposite) edge of a (e.g., vertically) extended side wall, which in turn is connected to the inside of the shell.

Furthermore, the at least one guide element extends along the distribution channel, in particular parallel to the distribution channel. The at least one guide element can be flush with respect to the vertical

Side wall of the distribution channel may be arranged so that an outer side of the side wall of the distribution channel passes continuously or substantially continuously into the first side of the guide element. However, between the distribution channel or the vertical side wall and the guide element may also be along the longitudinal axis of the Mantels extended gap may be provided, through which a gaseous phase of the first medium can get into the separation chamber.

According to a further embodiment of the invention, the heat exchanger in the shell space to a filling level, on which the liquid level of the bath (liquid phase of the first medium) in a normal operation of the

Heat exchanger is located, further comprising the heat exchanger in the jacket space has a receiving space forming separating unit for separating the gaseous phase of the first medium from the liquid phase of the first medium. The separating unit has in particular at least one upward

Receiving opening for introducing falling from the distribution channel first medium into the receiving space, wherein the upwardly directed receiving opening is arranged above or at filling level, so that in the receiving space

absorbed gaseous phase of the first medium can escape via the receiving opening in the mantle space.

The arrangement of the receiving opening does not necessarily have to be related to the filling level, but may alternatively or additionally also be related to an upper side or upper edge of the plate heat exchanger or the plate heat exchanger block. Preferably, in this regard, an upper edge (relative to the vertical) of the receiving opening is preferably in the range of 0mm to 100mm, more preferably in the range of 0mm to 50mm, even more preferably in the range of 0mm to 25mm above the top and top of the

Plate heat exchanger, wherein the value 0mm corresponds to the level of the top or the upper edge of the plate heat exchanger in the direction of the vertical.

According to a preferred embodiment, it is provided that the separating unit has a first side wall facing the interior. In this case, the first side wall may have at least one distribution opening, wherein the at least one distribution opening is preferably arranged at least partially below the filling level, so that the liquid phase of the first medium via the at least one distribution opening in the bath surrounding the heat exchanger can be introduced. The at least one distribution opening or the plurality of distribution openings are preferably formed as slits extending along the vertical. As a rule, the first side wall has a plurality of distribution openings. Alternatively, however, the first side wall may also be formed as an overflow wall. The first side wall is then formed liquid-impermeable, ie, has no distribution openings, so that the liquid phase of the first medium flows over an upper edge of the first side wall in the Vorlageraum.

In other words, the separating unit can be designed both as an overflow bag and as a (liquid) permeable bag, i. the position and direction of the liquid outlet is in particular freely selectable.

Preferably, the separating unit is arranged in a horizontal, perpendicular to the longitudinal axis of the jacket extending direction laterally to the plate heat exchanger and thereby extends along (in particular parallel) of the plate heat exchanger or along the longitudinal axis of the jacket.

Furthermore, the first side wall preferably has an inclination. In this case, the first side wall is inclined towards the plate heat exchanger, so that the horizontal

Cross-sectional area of the receiving space in the vertical increases from bottom to top.

The said filling level is to be understood in particular as a desired height, on which the liquid level of the liquid phase of the first medium during the

intended operation of the heat exchanger is located. Of the

Plate heat exchanger may be completely submerged in the bath during normal operation, but can also be with a top from the bath

protrude. That region of the jacket space, which is located above the filling level or the liquid level of the liquid phase of the first medium, serves to accommodate the gaseous phase of the first medium and is therefore also referred to as a separation space.

Preferably, the fill level with respect to the top (or top) of the plate heat exchanger is in the range of -500mm to + 100mm, more preferably in the range of -300mm to + 100mm, more preferably in the range of -300mm to + 50mm preferably in the range of -300 mm to + 25 mm, even more preferably in the range of -300 mm to 0 mm: Here, the value corresponds to 0 mm the level of the top (see above). Negative values indicate that the fill height in the direction of the vertical is below the top / top of the

Plate heat exchanger is located. Preferably, the separating unit is designed as an upwardly open channel, which extends (as well as the distribution channel) along the longitudinal axis of the jacket. The separating unit is preferably vertically below the distribution channel

arranged so that the leaking from the distribution channel liquid phase of the first medium can fall through the receiving opening of the separating unit in the receiving space of the separating unit.

Preferably, the separating unit has a second side wall opposite the first side wall, which is formed in particular by a wall of the jacket. The second side wall may also be formed separately from the jacket

Preferably, it is further provided that the separating unit has a third side wall and a fourth side wall opposite the third side wall, wherein the third and the fourth side wall connect the first and the second side wall with each other, and wherein in particular the third and the fourth side wall each at least one Side opening for discharging the liquid phase of the first medium and in particular extend perpendicular to the longitudinal axis of the shell. Preferably, a plurality of side openings are formed in the front-side third and fourth side walls. However, the third and the fourth side wall can also be designed as an overflow wall and then have none

Side openings on. It is also conceivable that the third and the fourth side wall are missing and the separating unit is open on the front side. Furthermore, the third and fourth side walls may have a lower upper edge than the first side wall.

The invention basically makes it possible to control and direct the flow of the liquid entering the jacket space, wherein the flow rate of the incoming liquid into the separation space of a core-in-shell heat exchanger can be reduced. The guide device according to the invention can in particular also at other entrance distributors than the distribution channel shown be used. If a separating unit is used, then the

Guide can also be used for controlled supply of liquid to the separating unit and is preferably set up and provided. An advantage of the invention is in particular that the design of the guide is variable. Thus, the baffle may in principle be made of any suitable materials (such as aluminum, steel or aluminum)

Plastic) are manufactured. A combination of suitable materials is possible. The guide can be made of sheet metal as well as other suitable

Elements, such as e.g. machined pipes, machined solid materials, molded parts or (extruded) profiles. The combination of different elements is possible. Furthermore, the shape, size and number of elements used a

Guide device according to both manufacturing and after

procedural aspects are designed. In particular, it is also possible to address plant-specific features. Each of the elements used can be designed individually.

If sheets (for example in the form of the at least one guide element) are part of the

Guide, then they can be solid, perforated or too

slotted. The sheets can be both flat and profiled. As already described, besides the distribution channel, the guide can also be attached to another suitable location (for example, to the jacket). The type of attachment is freely selectable. For example, the guide can be welded on,

screwed or glued. Furthermore, the orientation of the guide is arbitrary, so that a

corresponding distribution of the liquid phase can be generated on the jacket space.

The guide can also be performed without a frame, of course, parts can be combined with and without frame. Further features and advantages of the invention are intended in the following

Figure descriptions of embodiments of the invention will be explained with reference to the figures. 1 shows a partially sectioned view of a device according to the invention

heat exchanger;

Fig. 2 is a view of the heat exchanger taken along the line A-A of Fig. 1; Fig. 3 is a detail of Figure 2; and

Fig. 4 is a perspective view of a plate heat exchanger of a

heat exchanger according to the invention. FIG. 1 shows, in connection with FIG. 4, a block-in-shell heat exchanger 1 according to the invention. The heat exchanger 1 has a jacket 2 which extends along a longitudinal or cylindrical axis which runs along the horizontal at a heat exchanger 1 arranged as intended. The jacket 2 surrounds a jacket space 3, in which at least one plate heat exchanger 4 is arranged. This has alternately juxtaposed as well as in particular vertical first and second heat transfer passages 71, 72 (see Fig. 4), which are each adapted to receive a first and second medium F1, F2, so that between two media F1, F2 indirectly heat is transferable / can be transferred. The heat transfer passages 71, 72 are each limited by two parallel partition plates 90 (the two outermost

Separating plates of the plate heat exchanger 4 are referred to as cover plates), between each of which a heat conducting structure 80 is arranged, which is in the present example designed as a so-called fin, so as a corrugated or folded sheet, so that together with the respective two partition plates 90 a plurality of parallel Channels for the respective medium F1, F2 is formed, wherein the channels for the first medium F1 extend in particular in the vertical direction and the channels for the second medium, in particular in the horizontal direction, ie, the two media F1, F2 are guided in particular in cross-current to each other , Other modes of operation (eg countercurrent) are also conceivable. 4, the first heat transfer passages 71 are toward the horizontally extended top 4a of the at least one plate heat exchanger 4 bounded by the four top edges 41, 42, 43, 44 of the plate heat exchanger 4 and towards the bottom (not shown). open. That is, there are corresponding inlet openings at the bottom, via which the injected into the shell space 3 first medium F1, which is a bath around the

Plate heat exchanger 4 forms, enter the first heat transfer passages 71 and can rise in these (so-called thermosiphon effect) and on the upper side 4a via corresponding outlet openings 40 from the first

Heat transfer passages 71 can emerge again as a two-phase current. The first medium F1 can be introduced into the jacket space 3 via an inlet connection 53 arranged on the jacket 2.

To the sides, the first and second heat transfer passages 71, 72 may be closed by so-called edge bars (side bars) 91. The second heat transfer passages 72 are additionally closed at the top and bottom by such end strips 91.

The components of the at least one plate heat exchanger 4, e.g. the partition plates 90, the fins 80, the side bars 91 and the collectors 61, 63, 62, 64 (also referred to as headers) are preferably made of aluminum. The partition plates 90, side bars 91 and fins 80 are preferably soldered together in an oven.

When ascending in at least one plate heat exchanger 4, the first medium F1 is brought into an indirect heat transfer with the second medium F2, which via an inlet port 51 and 57 and an adjoining collector (also called header) 61 and 63 in the second

Heat transfer passages 72 of the at least one plate heat exchanger 4 is introduced and there, in particular in cross-flow to the first medium F1, which flows into the first heat transfer passages 71, out.

As a result, for example, the first gaseous second medium F2 is cooled and in particular liquefied, whereas the first medium F1 is heated and partially evaporated. A resulting gaseous phase G1 of the first medium F1 collects in the separation chamber A above the at least one Plattenwärmeübertragers 4 and can be withdrawn from there via a provided on the jacket 2 outlet 55 and 56 from the jacket or separation chamber A. The condensed second medium is a collector (or header) 62 or 64 of the at least one plate heat exchanger 4 from the second

Heat transfer passages 72 deducted and withdrawn via a connected to the respective collector 62 and 64 connecting piece 52 and 54 from the heat exchanger 1.

Preferably, the at the top 4a of the at least one

Plattenwärmeübertragers 4 together with the resulting gaseous phase G1 leaking liquid phase L1 of the first medium F1 in the

Plate heat exchanger 4 surrounding bath returned.

As shown in FIG. 1, the heat exchanger 1 can also have a plurality of plate heat exchangers 4, in particular two, as described above

Plate heat exchanger 4, which according to Figure 1, e.g. along the longitudinal axis of the heat exchanger 1 are arranged one behind the other in the shell space 3 of the heat exchanger 1. Of course, the heat exchanger 1 can only one

Plate heat exchanger 4, which is then e.g. how the right or the left plate heat exchanger 4 of Figure 1 can be formed.

For introducing the first medium F1 into the jacket space 3 of the heat exchanger 1, a distributor 6, here preferably in the form of a distributor channel 6, is arranged above the plate heat exchanger 4 in the jacket space 3, wherein the distributor channel 6 has an interior 6a for receiving the liquid phase L1 of the first Surrounding medium F1 and is in fluid communication with an inlet 53 which is provided at an upper portion of the shell 2. The distributor channel 6 is fixed to an inner side of the jacket 2 facing the jacket space 3, wherein the jacket 2 forms a side wall of the distributor channel 6. The distribution channel 6 further comprises a horizontally along the longitudinal axis of the shell 2 extended bottom 6c, one edge of which is fixed to the shell 2, wherein from the other

(opposite) edge a vertically extending side wall 6d goes off, which in turn is connected to the inside of the shell 2. The bottom 6c of the

Distribution channel 6 has at least one downwardly directed outlet opening 6b (in principle several such outlet openings 6b are provided) through which the liquid phase L1 of the first medium F1 can escape from the distributor channel 6 into the jacket space 3 in a first spatial direction R.

In the vertical direction is now below the distribution channel 6, a guide 10 is arranged, which is designed to conduct the leaking from the at least one outlet 6b liquid phase L1 of the first medium F1, wherein the guide 10 in particular at least a part of a first (in particular vertical ) Spatial direction R from the at least one outlet opening 6b downstream liquid phase L1 deflects in a second spatial direction R ', which differs preferably from the first spatial direction R. Here, the second spatial direction R ', e.g. a larger horizontal component than the first one

Direction R. The deflection of at least a portion of the liquid phase L1 is preferably carried out so that the liquid phase L1 of the first medium F1 away from the top 4a or at the top 4a of the at least one

Pass plate heat exchanger 4 over. This ensures that the liquid phase L1 of the first medium F1 does not act on the upper side 4a of the at least one plate heat exchanger 4.

For this purpose, the guide device 10 in particular at least one plate-shaped guide element 100, in particular in the form of a guide plate, on that extends along the longitudinal axis and substantially flush with the side wall 6d of

Distribution channel abuts or possibly merges into this. The at least one guide element 100 in this case has a curvature, such that the at least one guide element 100 has a convexly curved first side 100a, which faces the plate heat exchanger 4, and a second side 100b facing away from the first side 100a, which is concavely curved and facing away from the plate heat exchanger 4 or the

Distribution channel 6, namely the bottom 6c, facing. The at least one guide element 100 is now arranged so that at least a part of the

Distributor channel 6 through the at least one outlet opening 6b leaking liquid phase L1 of the first medium F1 impinges on the second side 100b and is led away therefrom from the top 4a of the plate heat exchanger 4 and laterally to at least one plate heat exchanger 4 is introduced into the bath.

The at least one guide element 100 is in this case defined by means of a frame 20 both on the distributor channel 6 and on the jacket 2 of the heat exchanger 1. Optionally, as shown in FIGS. 2 and 3, according to one embodiment of the invention, the heat exchanger can have an additional separating unit 208, which serves to calm the first medium F1, so that a gaseous phase G1 of the first medium F1 in the separating unit 208 can be separated from the liquid phase L1 of the first medium F1. The separating unit 208 is of the

Distributor channel 6 in cooperation with the guide 10 with the first medium F1 charged. For collecting the first medium F1, the separating unit 208 has an upwardly directed receiving opening 209 arranged below the distributor channel 6, the opening plane of which extends perpendicular to the vertical. Via the receiving opening 209, the first medium F1 falling out of the distributor channel 6 passes into a receiving space 207 of the separating unit 208. The separating unit 8 is designed as a channel open at the top, which extends below the

Distribution channel 6 also extends along the longitudinal axis of the shell 2, wherein preferably the separating unit 208 along the longitudinal axis of the shell 2 has a length which corresponds to the length of the distribution channel 6 along this longitudinal axis. The receiving space 207 of the separating unit 208 or the receiving opening 209 can therefore be charged along its entire length with the first medium F1.

The separating unit 208 has a peripheral wall which defines the receiving opening 209 and delimits the receiving space 207. In this case, the wall has a first side wall 210 facing the shell space 3 or the plate heat exchanger 4, which faces the plate heat exchanger 4 transversely to the longitudinal axis of the shell 2 in the horizontal direction. The first side wall 210 faces a second side wall 213 of the separating unit 208, which is formed by the shell 2. At the front, the separating unit 208 has a third and a fourth side wall 214 (only one of these side walls 214 can be seen in FIGS. 2 and 3), which extend perpendicular to the longitudinal axis of the jacket 2 and have a substantially triangular shape corresponding to the cross-sectional shape of the separating unit 208 are (apart from a rounding due to the cylindrical shell 2). Accordingly, the first side wall 210 is the

Separation unit 208 inclined to the plate heat exchanger 4, so that increases the horizontal cross section of the separating unit 208 and the receiving space 207 in the vertical from bottom to top to the receiving opening 209 out. The first Side wall 210 in the present case encloses an angle of, in particular, 45 ° with the vertical.

Preferably, the separating unit 208 and / or the distribution channel 6 are formed from one or more sheets and welded to the shell 2 or connected in any other suitable manner. In particular, the first side wall 210 and the third and fourth side walls 214 may each be formed of a flat sheet and suitably connected to each other (e.g., by welded joints,

Rivet connections, etc.)

For discharging the liquid phase L1 of the first medium F1 from the

Receiving space 207 of the separating unit 208 has the first side wall 210

in particular distribution openings 21 1. Furthermore, side openings 212 can also be provided in the end-side side walls 214, via which the liquid phase L1 of the first medium F1 can likewise exit into the preliminary storage space V (only one side opening 212 is shown by way of example).

The wall of the separating unit 208 or the first, third and fourth side wall 210, 214 define an upper edge of the separating unit 208, which bounds the receiving opening 209 and which preferably above the filling level 300 of the liquid phase L1 in FIG

Vorlageraum V is arranged. Accordingly, the liquid phase L1 of the first medium F1 passes from the receiving space 207 preferably only via the distribution or side openings 21 1, 212 in the Vorlageraum V. However, the separating unit 208 may also form a liquid-tight pocket, so that the wall of the separating unit 208th acts as an overflow wall and accordingly the liquid phase L1 passes through the receiving opening 209 in the Vorlageraum V. Furthermore, the

Separating unit 208 may be open at the front, so have no third and fourth side wall 214. It is also possible for the third and fourth side walls 214 to have a lower upper edge in the vertical direction than the first side wall 210.

The distribution openings 21 1 may be slit-shaped along the vertical. Other opening cross sections are also possible. The distribution openings 21 1 are preferably arranged over the entire length of the separation unit 208 along the longitudinal axis of the shell 2 equidistant from each other. According to Figures 2 and 3 are the Side openings 212 are preferably formed as circular holes (for the sake of simplicity only one side opening 212 is shown). The side openings 212 may be arranged in parallel to the filling level 300, arranged one above the other rows. For withdrawing the gaseous phase G1 of the first medium F1 from the

Separating chamber A, the shell 2 at an upper portion of the shell 2 at least one outlet 55. Furthermore, an outlet 59 is provided at a lower region of the jacket 2, which is provided for discharging the liquid phase of the first medium F1 from the Vorlageraum V. By means of a

Overflow wall 58 ensures a Mindestfüllhöhe the first medium F1 in the storage room V.

LIST OF REFERENCE NUMBERS

1 heat exchanger

2 coat

3 jacket space

4 plate heat exchangers

a top

6 distribution device or distribution channel

a Interior of the distributor or distribution channel b Outlet opening of the distributor or distributor channel c Bottom

d sidewall

10 guide

0 frame

0 outlet openings

1, 42, 43, 44 upper edges

1, 53, 57 inlet nozzle

8 overflow wall

2, 54, 55, 56, 59 outlet

1, 62, 63, 64 headers

1 First heat transfer passages

2 second heat transfer passages

0 fin (heat conduction structure)

0 separating plates

1 ; sidebars

100 guiding element

100a First page

100b Second page

140 passage opening

07 recording room

08 separating unit

09 receiving opening

10 first sidewall

11 distribution opening 212 side opening

213 Second side wall

214 Third or fourth sidewall

300 filling level of the liquid phase of the first medium in the shell space

A separation room

F1 First medium

F2 Second medium

G1 Gaseous phase first medium

L1 liquid phase first medium

R, R 'spatial direction

V storage room

Claims

claims

Heat exchanger (1) for indirect heat transfer between a first medium (F1) and a second medium (F2), comprising:

a jacket (2) having a jacket space (3) for receiving the first

Media (F1) surrounds, and

at least one plate heat exchanger (4), for indirect

Heat transfer between the two media (F1, F2),

wherein the at least one plate heat exchanger (4) is arranged in the jacket space (3) such that it can be surrounded by a liquid phase (L1) of the first medium (F1) located in the jacket space (3), and wherein

for introducing the first medium (F1) into the jacket space (3), a distributor device (6), in particular in the form of a distributor channel (6), is arranged above the plate heat exchanger (4) in the jacket space (3), which is provided with an inlet (53). is in flow communication with the jacket (2), wherein the distributor device (6) has at least one outlet opening (6b) directed downward, through which a liquid phase (L1) of the first medium (F1) can exit into the jacket space (3), and wherein the heat exchanger (1) has a guide device (10) arranged below the distributor device (6), which is designed to conduct the liquid phase (L1) of the first medium (F1) emerging from the at least one outlet opening (6b),

characterized,

in that the at least one plate heat exchanger (4) has an upper side (4a), wherein the guide device (10) is designed to move the liquid phase (L1) of the first medium (F1) away from the upper side (4a) and / or at the upper side (4a) to pass over.

2. Heat exchanger (1) according to claim 1, characterized in that the

Guide device (10) is adapted to at least a part of the in a first spatial direction (R) from the at least one outlet opening (6b) leaked liquid phase in a second spatial direction (R ') to direct.

Heat exchanger (1) according to claim 2, characterized in that the second spatial direction (R ') differs from the first spatial direction (R), wherein in particular the second spatial direction (R ') a larger horizontal

Component than the first spatial direction (R), and wherein in particular the first spatial direction (R) extends from top to bottom along the vertical.

Heat exchanger (1) according to one of the preceding claims, characterized in that the at least one plate heat exchanger (4) first heat transfer passages (71) for receiving the first medium (F1) and second heat transfer passages (72) for receiving the second medium (F2) has , so that between the two media (F1, F2) indirectly heat transferable, and in particular the first

Heat transfer passages (71) via the outlet openings (40) at the top (4a) of the at least one plate heat exchanger (4) with the jacket space (3) are in flow communication, so that the first medium (F1) through the outlet openings (40) into the shell space ( 3) can escape.

Heat exchanger (1) according to one of the preceding claims, characterized in that the guide device (10) is adapted to direct the liquid phase (L1) of the first medium (F1) so that the liquid phase (L1) is not the top ( 4a) acted upon.

Heat exchanger (1) according to one of the preceding claims, characterized in that the guide device (0) has at least one plate-shaped guide element (100), in particular in the form of a guide plate.

Heat exchanger (1) according to one of the preceding claims, characterized in that the at least one guide element (100) has a curvature.

Heat exchanger (1) according to one of the preceding claims 8, characterized in that the at least one guide element (100) has a convexly curved first side (100a) which faces the plate heat exchanger (4) and one of the first side (100a) facing away concavely curved second side (100b) facing away from the plate heat exchanger (4) and / or facing the distribution channel (6). Heat exchanger (1) according to claim 8, characterized in that the at least one guide element (100) is arranged so that from the

Distributor channel (6) by the at least one outlet opening (6b) leaking liquid phase (L1) of the first medium (F1) on the second side (100b) impinges and along this led away from the top (4a) and / or past this to be led.

Heat exchanger (1) according to one of the preceding claims, characterized in that the guide device (10) and / or the guide element (100) over the entire distribution channel (6) along the distribution channel (6) or only over a portion of the distribution channel ( 6).

Heat exchanger (1) according to one of the preceding claims, characterized in that the at least one guide element (100) has a plurality of passage openings (140) for the first medium (F1).

Heat exchanger (1) according to one of the preceding claims, characterized in that the jacket space (3) is adapted to receive the first medium (F1) so that a liquid phase (L1) of the first

Medium (F1) the at least one plate heat exchanger (4)

forming a surrounding bath with a filling height (300), wherein the heat exchanger (1) further comprises a receiving space (207) forming separating unit (208) for separating the gaseous phase (G1) from the liquid phase (L1) of the first medium (F1) Mantle space (3), wherein the separating unit (208) at least one upwardly directed receiving opening (209) for introducing from the distribution channel (6) falling first medium (F1) in the

Receiving space (207), and wherein the upward

Receiving opening (209) is arranged above the filling level (300) or at filling level (300), so that the gaseous phase (G1) of the first medium (F1) received in the receiving space (207) passes into the jacket space (3) via the receiving opening (209) ) can escape.

13. Heat exchanger (1) according to claim 12, characterized in that the separating unit (208) has a jacket space (3) facing the first side wall (10). Heat exchanger (1) according to claim 13, characterized in that the first side wall (210) at least one distribution opening (211), wherein the at least one distribution opening (211) at least partially below the filling level (300) is arranged so that the liquid Phase (L1) of the first medium (F1) via the at least one distribution opening (211) in the

Plate heat exchanger (4) surrounding bath can be introduced, or that the first side wall (210) is formed as an overflow wall.