WO1998026246A1 - Echangeur thermique a plaques - Google Patents
Echangeur thermique a plaques Download PDFInfo
- Publication number
- WO1998026246A1 WO1998026246A1 PCT/FR1997/002277 FR9702277W WO9826246A1 WO 1998026246 A1 WO1998026246 A1 WO 1998026246A1 FR 9702277 W FR9702277 W FR 9702277W WO 9826246 A1 WO9826246 A1 WO 9826246A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plate
- bundle
- plates
- heat exchanger
- fluid
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0093—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
Definitions
- the present invention relates to a plate heat exchanger for fluids and in particular a plate heat exchanger used to cool or heat at least one first fluid by heat exchange with at least one second fluid.
- the first type of heat exchanger comprises a bundle of U-shaped tubes or a bundle of straight tubes in which one of the fluids circulates.
- the second type of heat exchanger comprises, inside an external envelope or calender, a bundle constituted by plates shaped, for example to present corrugations and reported against each other so as to delimit a plurality of fluid passage channels along the entire length of the beam.
- the plate bundle comprises a first set of passage channels for a first exchange fluid and a second set of passage channels for a second fluid, so that the first and the second fluid can pass through the following plate bundle its entire length.
- the plates made of thin sheets most often made of stainless steel, provide a very large surface for exchange with the fluids and ensure heat transfer between these fluids.
- the grille has a wall thickness allowing it to withstand the pressure of fluids introduced into the heat exchanger.
- the first set of fluid passage channels inside the bundle is connected, via junction pipes to a first distribution and recovery circuit of the first fluid disposed outside the calender.
- the second set of channels for the passage of the second fluid inside the bundle is connected to a second circuit for distributing and recovering the second fluid by means of junction pipes.
- junction pipes pass through the outer casing in a sealed manner.
- This type of plate bundle heat exchanger works with various fluids, such as for example liquids or gases or a two-phase mixture and can be used for example for the implementation of a physical or chemical process in the field of petroleum refining. , petrochemicals, chemistry and the treatment of all gases.
- these plate heat exchangers have a circulation of fluids in the plate bundle either with parallel currents or with crossed currents.
- the fluids circulate alternately in the channels delimited by the plates, one channel in two for one fluid and one channel in two for the other fluid.
- At least one of the fluids may be important for at least one of the fluids to have a specific temperature profile and for example as close as possible to an isothermal profile.
- the object of the invention is to avoid these drawbacks by proposing a plate heat exchanger between several fluids making it possible to obtain at the outlet of this exchanger for at least one of the fluids, a temperature profile as desired and in particular close to an isothermal profile.
- the subject of the invention is a plate heat exchanger, of the type comprising a bundle of plates formed by stacking heat exchange plates provided with corrugations, characterized in that the plates delimit channels forming between them, on the one hand, at least one main circuit for at least one first fluid and, on the other hand, N secondary circuits for N fluids and extending perpendicular to said main circuit, each channel of said main circuit being disposed between two channels of the secondary circuits.
- each plate of the bundle of plates comprises, on its longitudinal edge at the level of the inlets of the secondary fluids, plates added and provided with corrugations directed substantially perpendicularly to the longitudinal axis of the plate bundle,
- each plate of the bundle of plates comprises, on its longitudinal edge at the outlets of the secondary fluids, plates added and provided with undulations directed substantially perpendicular to the longitudinal axis of the bundle of plates
- each plate of the bundle of plates comprises, on its longitudinal edge at the inlets and outlets of the secondary fluids, plates added and provided with undulations directed substantially perpendicular to the longitudinal axis of the bundle of plates
- each plate of the bundle of plates comprises, on its transverse edge at the level main fluid inlets, an added plate and provided with corrugations directed substantially in the longitudinal axis of the plate bundle
- each plate of the plate bundle has, on its transverse edge at the main fluid outlets, an added plate and provided with corrugations directed substantially in the longitu- dinal of the plate bundle
- each plate of the bundle of plates comprises, on its transverse edge at the level of the inlets and outlets of the main fluid, an attached plate and provided with undulations directed substantially in the longitudinal axis of the bundle of plates, the bundle of plates is arranged inside a sealed enclosure.
- FIG. 1 is a partially cutaway perspective view of a heat exchanger according to the invention
- FIG. 2 is a schematic view in longitudinal section of the heat exchanger according to the invention
- FIG. 3 is a schematic perspective view of a first embodiment of the bundle of plates of the heat exchanger according to the invention
- FIG. 4 is a schematic perspective view of a second embodiment of the bundle of plates of the heat exchanger according to the invention
- - Fig. 5 is a schematic top view of a plate of the plate bundle.
- a plate heat exchanger intended to carry out a heat exchange between at least a first fluid A consisting of a liquid or a gas or a biphasic mixture and N fluids circulating transversely with respect to said first fluid, consisting each by a liquid or a gas or a two-phase mixture.
- This heat exchanger is intended for example to cool the first fluid A with the N fluids or to heat this first fluid A.
- the heat exchanger comprises a sealed enclosure 1 of elongated shape and of cross-section, for example circular.
- This sealed enclosure 1 can be arranged vertically or horizontally. Inside the enclosure 1 is disposed a bundle of plates designated as a whole by the reference 2 and of generally parallelepipedal shape which constitutes the exchange surface necessary for the heat transfer between the fluids A, B and C.
- the bundle of plates 2 is formed, as shown in FIG. 3, by a stack of thin metal plates 3, for example made of stainless steel.
- the plates 3 of the plate bundle 2 are parallel to each other, and in the embodiment shown in the figures are arranged horizontally. These plates 3 can also be arranged vertically.
- the plates 3 delimit between them channels 10A, 10B ... ION which extend over the entire surface of the bundle of plates 2.
- channels 10A, 10B ... ION which extend over the entire surface of the bundle of plates 2.
- the channels 10A, 10B .... 10N form, on the one hand, a main circuit for the first fluid A and, on the other hand, two secondary circuits for fluids B and C and extend dant perpendicular to the main circuit.
- the end face 11 of the plate bundle 2 is used for the inlet of the fluid A and the end face 12 is used for the outlet of the fluid A after it has passed through the corresponding channels.
- the lateral zone 13 of the bundle of plates 2 is divided into two zones, the zone 13a serving for the inlet of the fluid B and the area 13b serving for the outlet of the fluid C.
- the lateral face 14 of the bundle of plates 2 is divided into two zones, the zone 14a serving for the outlet of fluid B and the area 14b serving for the inlet of fluid C.
- Channels 10A, 10B ... 10N are independent of each other for a separate circulation of the fluids with respect to each other and over the entire surface of the plates 3 of the plate bundle 2 in order to optimize the exchange surfaces between fluids A, B and C.
- the channel 10A is closed on the end faces 11 and 12 and also in the areas 13a and 14a of the side faces 13 and 14 while this channel 10A is open in the areas 13b and 14b of said side faces 13 and 14 to allow the circulation of fluid C in said channel 10A.
- the channel 10B is open on the end faces 11 and 12 and, closed along the entire length of the side faces 13 and 14 to allow circulation fluid A in this channel 10B.
- the channel 10C is closed, on the one hand, on the end faces 11 and 12 and, on the other hand, in the zones 13b and 14b of the lateral faces 13 and 14 while it is open in the zones 13a and 14a of said side faces 13 and 14 to allow the circulation of the fluid B in this channel 10C.
- the channel 10D is open on the end faces 11 and 12 and closed along the entire length of the side faces 13 and 14 to allow the circulation of the fluid A in this channel 10D.
- each channel of the main circuit for the fluid A is arranged between two channels of the secondary circuits for the fluids B and C.
- the channels 10A, 10B ... 10N are closed by tongues 15, for example welded on the edges and between two corresponding plates 3.
- the obturation of the channels 10A, 10B ... ION can be carried out by extensions formed on the edges of the plates and having edges folded down for example at 90 °, the folded edges of the adjacent plates being welded between them to form a tight connection.
- the circulation of the fluids B and C can take place in the same direction in the bundle of plates 2.
- the fluid B enters the bundle of plates 2 through the area 13a and exits through the area 14a and the fluid C enters the bundle of plates 2 through the area 13b and exits through the area 14b.
- the fluid B can enter the bundle of plates 2 through the zone 13a and exit through the zone 14b and the fluid C can enter the bundle of plates 2 through zone 14a and exit through zone 13b.
- the fluid B can enter the bundle of plates 2 through the area 13a and exit through the area 14b and the fluid C can enter the bundle of plates 2 through the area 13b and exit through the area 14a.
- the main circuit for the fluid A is connected, at one end of the plate bundle 2 to means for admitting the fluid A and at the opposite end of said plate bundle 2 to means for outputting this fluid A after it has passed through this main circuit which is, in the embodiment shown in FIG. 3, formed by channels 10B, 10D ... 10N-1.
- the main fluid intake means A are formed by a manifold 20 extending over the entire end face 11 of the bundle of plates 2 and connected to an inlet pipe 21 of said main fluid A, passing in leaktight manner Pregnant 1.
- the main fluid outlet means A are formed by a manifold 22 extending over the entire end face 12 of the bundle of plates 2 and connected to an outlet pipe 23 of said main fluid A, sealingly passing through the enclosure 1.
- the first secondary circuit for fluid B is connected to means for admitting this fluid B and to means for leaving said fluid B after it has passed through this first secondary circuit formed, in the embodiment shown in FIG. 3, through channels 10C ... ION.
- the means for admitting the first secondary fluid B are formed by a manifold 24 extending over the entire area 13a of the lateral face 13 of the bundle of plates 2 and connected to an inlet pipe 25 of said first secondary fluid B, passing tightly through enclosure 1.
- the means for leaving the first secondary fluid B are formed by a manifold 26 extending over the entire area 14a of the lateral face 14 of the bundle of plates 2 and connected to an outlet pipe 27 of said first secondary fluid B, passing through waterproof waterproof 1.
- the secondary circuit for the second secondary fluid C is connected to means for admitting this fluid C and to means for leaving said fluid C after it has passed through this secondary circuit which is formed, in the exemplary embodiment shown in Fig. 3, through channels 10A,. , .10N-2.
- the means for the outlet of the secondary fluid C are formed by a manifold 28 extending over the entire area 13b of the lateral face 13 of the bundle of plates 2 and connected to an outlet pipe 29 of the said secondary fluid C, passing tightly through the Pregnant 1.
- Fig. 4 there is shown schematically in perspective a bundle of plates 2 intended to carry out a heat exchange between a main fluid A and four secondary fluids, respectively B, C, D and E.
- the plates 3 of the plate bundle define between them channels 10A, 10B ... ION forming, on the one hand, a main circuit for the fluid A and, on the other hand, four secondary circuits for four fluids B, C, D and E and extending perpendicular to the main circuit.
- Each channel 10B, 10D, 10F ... 10N-1 of the main circuit is arranged between two channels of the secondary circuits.
- the channel 10A is closed on the end faces 11 and 12 and open in the areas 13a and 14a of the side faces 13 and 14 while it is closed in the other areas of said side faces 13 and 14 to allow the circulation of the secondary fluid B in the channel 10A over the entire surface of the bundle of plates 2.
- the channel 10B is open on the end faces 11 and 12 and closed along the entire length of the side faces 13 and 14 to allow the circulation of the main fluid A in this channel 10B over the entire length of the bundle of plates 2.
- the channel 10C is closed on the end faces 11 and 12 of the bundle of plates 2 as well as in the zones 13a, 14a; 13c, 14c and 13d, 14d while it is open in the areas 13b and 14b of the side faces 13 and 14 to allow the circulation of the secondary fluid C in this channel 10C.
- the channel 10D is open on the end faces 11 and 12 of the bundle of plates 2 while it is closed along the entire length of the side faces 13 and 14 to allow the circulation of the main fluid A in this channel 10D.
- the channel 10E is closed on the end faces 11 and 12 of the bundle of plates 2 as well as in the zones 13a, 14a; 13b, 14b and 13d and 14d while it is open in the zones 13c and 14c of the lateral faces 13 and 14 to allow the circulation of the fluid C in this channel 10E of the plate bundle 2.
- Channel 10F of the plate bundle 2 East open on the end faces 11 and 12 of the bundle of plates 2 while it is closed along the entire length of the lateral faces 13 and 14 to allow the circulation of the fluid A in this channel 10F and over the entire length of the bundle of plates 2.
- the channel 10G is closed on the end faces 11 and 12 of the bundle of plates 2 as well as in the zones 13a, 14a; 13b, 14b and 13c, 14c while it is open in the areas 13d and 14d to allow the circulation of the fluid E in this channel 10G and over the entire surface of the plates 3.
- the secondary fluids B, C, D and E can circulate in the same direction inside the bundle of plates 2 or in different directions.
- B and D can circulate in the same direction inside the bundle of plates 2 and the secondary fluids C and E can circulate against the current with respect to the secondary fluids B and D.
- D and E can leave the bundle of plates 2 in zones of the lateral faces 13 and 14 which are not situated opposite the zones of entry of these secondary fluids.
- the inputs and outputs of the main fluid A and the secondary fluids B, C, D and E are also connected to the inlet and outlet pipes of these fluids by manifolds, as in the embodiment shown in the Figs. 1 and 2.
- a part of each longitudinal edge of this plate 3 has a tongue 15, for example welded to the corresponding longitudinal edge to form with the adjacent plate a lateral inlet 35 and a lateral outlet 36 for a secondary fluid.
- the plate 3 has corrugations 4 directed substantially in the direction of the longitudinal axis of said plate 3 and, at the level of the inlet 35, corrugations 5 directed substantially transversely relative to the axis longitudinal of the plate bundle 2.
- corrugations 5 can be formed on a plate 3a attached to the edge of the corresponding plate 3.
- the orientation of the corrugations allows a distribution of the fluids over the entire surface of the plate bundle and optimizes the heat exchange between these fluids.
- each plate 3 of the bundle of plates 2 may also have on its longitudinal edge at the outlet of the secondary circuits, a plate attached to this edge and having undulations directed substantially transversely to the longitudinal axis of the bundle of plates 2.
- each plate 3 can have an attached plate and provided with corrugations, either on its longitudinal edge at the inlet of the secondary fluids, or on its longitudinal edge at the outlet of the secondary fluids or either on the two edges both at the same time. Furthermore, each plate 3 can have an attached plate and provided with corrugations, either on its transverse edge at the level of the main fluid inlet, or on its transverse edge at the level of the main fluid outlet or either transverse edges at a time.
- the bundle of plates 2 is not placed in a sealed enclosure and in this case it comprises cover plates connected together by tie rods. With a heat exchanger according to the invention, the fluids have, at the outlet of the plate bundle, a thermal profile as desired and in particular close to an isothermal profile.
- the heat exchanger according to the invention makes it possible to maintain the desired average outlet temperature without ever having a part of one or more of the fluids do not reach the critical temperature.
- the heat exchanger according to the invention constitutes an additional means of thermal control of the reaction in a catalytic plate reactor and makes it possible to improve the performance of the reaction thanks to better control of the temperature field in the catalyst bed.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97951314A EP0956489A1 (fr) | 1996-12-13 | 1997-12-11 | Echangeur thermique a plaques |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9615376A FR2757257B1 (fr) | 1996-12-13 | 1996-12-13 | Echangeur thermique a plaques |
FR96/15376 | 1996-12-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998026246A1 true WO1998026246A1 (fr) | 1998-06-18 |
Family
ID=9498671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1997/002277 WO1998026246A1 (fr) | 1996-12-13 | 1997-12-11 | Echangeur thermique a plaques |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0956489A1 (fr) |
FR (1) | FR2757257B1 (fr) |
WO (1) | WO1998026246A1 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10328746A1 (de) * | 2003-06-25 | 2005-01-13 | Behr Gmbh & Co. Kg | Vorrichtung zum mehrstufigen Wärmeaustausch und Verfahren zur Herstellung einer derartigen Vorrichtung |
US11285399B2 (en) | 2008-08-15 | 2022-03-29 | Deka Products Limited Partnership | Water vending apparatus |
US11826681B2 (en) | 2006-06-30 | 2023-11-28 | Deka Products Limited Partneship | Water vapor distillation apparatus, method and system |
US11884555B2 (en) | 2007-06-07 | 2024-01-30 | Deka Products Limited Partnership | Water vapor distillation apparatus, method and system |
US11885760B2 (en) | 2012-07-27 | 2024-01-30 | Deka Products Limited Partnership | Water vapor distillation apparatus, method and system |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE842359C (de) * | 1946-01-22 | 1952-06-26 | Hydrocarbon Research Inc | Waermeaustauscher |
US3587731A (en) * | 1968-07-22 | 1971-06-28 | Phillips Petroleum Co | Plural refrigerant tray type heat exchanger |
-
1996
- 1996-12-13 FR FR9615376A patent/FR2757257B1/fr not_active Expired - Fee Related
-
1997
- 1997-12-11 WO PCT/FR1997/002277 patent/WO1998026246A1/fr not_active Application Discontinuation
- 1997-12-11 EP EP97951314A patent/EP0956489A1/fr not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE842359C (de) * | 1946-01-22 | 1952-06-26 | Hydrocarbon Research Inc | Waermeaustauscher |
US3587731A (en) * | 1968-07-22 | 1971-06-28 | Phillips Petroleum Co | Plural refrigerant tray type heat exchanger |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10328746A1 (de) * | 2003-06-25 | 2005-01-13 | Behr Gmbh & Co. Kg | Vorrichtung zum mehrstufigen Wärmeaustausch und Verfahren zur Herstellung einer derartigen Vorrichtung |
US11826681B2 (en) | 2006-06-30 | 2023-11-28 | Deka Products Limited Partneship | Water vapor distillation apparatus, method and system |
US11884555B2 (en) | 2007-06-07 | 2024-01-30 | Deka Products Limited Partnership | Water vapor distillation apparatus, method and system |
US11285399B2 (en) | 2008-08-15 | 2022-03-29 | Deka Products Limited Partnership | Water vending apparatus |
US11885760B2 (en) | 2012-07-27 | 2024-01-30 | Deka Products Limited Partnership | Water vapor distillation apparatus, method and system |
Also Published As
Publication number | Publication date |
---|---|
FR2757257A1 (fr) | 1998-06-19 |
FR2757257B1 (fr) | 1999-03-05 |
EP0956489A1 (fr) | 1999-11-17 |
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