WO2000053312A1 - Reacteur catalytique a faisceau de plaques - Google Patents
Reacteur catalytique a faisceau de plaques Download PDFInfo
- Publication number
- WO2000053312A1 WO2000053312A1 PCT/FR2000/000373 FR0000373W WO0053312A1 WO 2000053312 A1 WO2000053312 A1 WO 2000053312A1 FR 0000373 W FR0000373 W FR 0000373W WO 0053312 A1 WO0053312 A1 WO 0053312A1
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- channels
- circuit
- catalytic reactor
- reactor according
- plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
- B01J8/087—Heating or cooling the reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/248—Reactors comprising multiple separated flow channels
- B01J19/249—Plate-type reactors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/32—Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
- B01J8/003—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor in a downward flow
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/0278—Feeding reactive fluids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/0285—Heating or cooling the reactor
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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
- F28D9/0012—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 apparatus having an annular form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/00106—Controlling the temperature by indirect heat exchange
- B01J2208/00115—Controlling the temperature by indirect heat exchange with heat exchange elements inside the bed of solid particles
- B01J2208/0015—Plates; Cylinders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/02—Processes carried out in the presence of solid particles; Reactors therefor with stationary particles
- B01J2208/021—Processes carried out in the presence of solid particles; Reactors therefor with stationary particles comprising a plurality of beds with flow of reactants in parallel
- B01J2208/022—Plate-type reactors filled with granular catalyst
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/24—Stationary reactors without moving elements inside
- B01J2219/2401—Reactors comprising multiple separate flow channels
- B01J2219/245—Plate-type reactors
- B01J2219/2451—Geometry of the reactor
- B01J2219/2453—Plates arranged in parallel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/24—Stationary reactors without moving elements inside
- B01J2219/2401—Reactors comprising multiple separate flow channels
- B01J2219/245—Plate-type reactors
- B01J2219/2451—Geometry of the reactor
- B01J2219/2456—Geometry of the plates
- B01J2219/2458—Flat plates, i.e. plates which are not corrugated or otherwise structured, e.g. plates with cylindrical shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/24—Stationary reactors without moving elements inside
- B01J2219/2401—Reactors comprising multiple separate flow channels
- B01J2219/245—Plate-type reactors
- B01J2219/2461—Heat exchange aspects
- B01J2219/2462—Heat exchange aspects the reactants being in indirect heat exchange with a non reacting heat exchange medium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/24—Stationary reactors without moving elements inside
- B01J2219/2401—Reactors comprising multiple separate flow channels
- B01J2219/245—Plate-type reactors
- B01J2219/2469—Feeding means
- B01J2219/247—Feeding means for the reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/24—Stationary reactors without moving elements inside
- B01J2219/2401—Reactors comprising multiple separate flow channels
- B01J2219/245—Plate-type reactors
- B01J2219/2469—Feeding means
- B01J2219/2471—Feeding means for the catalyst
- B01J2219/2472—Feeding means for the catalyst the catalyst being exchangeable on inserts other than plates, e.g. in bags
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/24—Stationary reactors without moving elements inside
- B01J2219/2401—Reactors comprising multiple separate flow channels
- B01J2219/245—Plate-type reactors
- B01J2219/2476—Construction materials
- B01J2219/2477—Construction materials of the catalysts
- B01J2219/2479—Catalysts coated on the surface of plates or inserts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/24—Stationary reactors without moving elements inside
- B01J2219/2401—Reactors comprising multiple separate flow channels
- B01J2219/245—Plate-type reactors
- B01J2219/2476—Construction materials
- B01J2219/2477—Construction materials of the catalysts
- B01J2219/2481—Catalysts in granular from between plates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32203—Sheets
- B01J2219/3221—Corrugated sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32203—Sheets
- B01J2219/32213—Plurality of essentially parallel sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/322—Basic shape of the elements
- B01J2219/32203—Sheets
- B01J2219/32224—Sheets characterised by the orientation of the sheet
- B01J2219/32234—Inclined orientation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/324—Composition or microstructure of the elements
- B01J2219/32466—Composition or microstructure of the elements comprising catalytically active material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/32—Details relating to packing elements in the form of grids or built-up elements for forming a unit of module inside the apparatus for mass or heat transfer
- B01J2219/324—Composition or microstructure of the elements
- B01J2219/32466—Composition or microstructure of the elements comprising catalytically active material
- B01J2219/32475—Composition or microstructure of the elements comprising catalytically active material involving heat exchange
Definitions
- the subject of the present invention is a plate beam catalytic reactor for carrying out a heat transfer between a reactive fluid reacting on contact with a catalyst and a heat transfer fluid which provides or withdraws heat to the reactive fluid in order to increase the chemical reaction yield.
- treatment processes are used which employ reactors in which occur, between a reactant fluid and a catalyst, chemical reactions which are highly endothermic or exothermic and in which heat transfer is performed between the reactant fluid and a heat transfer fluid.
- catalytic reactors formed by a sealed enclosure 1 inside which are arranged parallel tubes filled with catalyst.
- the reactant fluid circulates in these tubes inside which the chemical reaction takes place and the heat transfer fluid circulates outside of said tubes, between them and the internal wall of the enclosure.
- catalytic plate reactors comprising a bundle of corrugated plates delimited both a first circulation circuit of the reactant fluid through a catalyst bed and a second circulation circuit of the heat transfer fluid.
- Catalytic plate reactors offer a better heat exchange coefficient than catalytic tube reactors, but they have certain drawbacks.
- the heat exchange bundle is formed by a stack of corrugated and rectangular plates and therefore has a generally parallelepiped shape.
- the bundle of plates is placed in a sealed enclosure which has a generally cylindrical shape.
- the general parallelepipedal shape of the bundle of plates proves to be an obstacle to an optimal use of the internal space of the cylindrical enclosure which brings an economic limitation to this type of catalytic reactors taking into account the high price of 1 ' waterproof enclosure.
- the two fluids circulating in the plate bundle can be at different pressures so that the adjacent plates tend to be pressed against each other by the pressure difference between these fluids.
- the mechanical strength of the corrugated plates is limited by the maximum thickness of the metal constituting the plates due to the shaping of these plates to produce the corrugations which reduces the fields of use of this type of catalytic reactors.
- an additional disadvantage of corrugated sheets is the limited access they allow inside the bundle of sheets to inspect these . plates during catalytic reactor shutdowns.
- the object of the invention is to avoid these drawbacks by proposing a catalytic plate reactor with reduced compactness and better resistance to the pressure difference between the fluids that the catalytic reactors used until now.
- the subject of the invention is therefore a catalytic plate reactor for carrying out a heat transfer between a reactive fluid reacting in contact with a catalyst and a heat transfer fluid, of the type comprising a sealed enclosure, vertical and of elongated shape, a bundle of plates arranged inside one of said sealed enclosure and means for admitting and discharging reactant and heat transfer fluids, characterized in that the enclosure is of circular shape and in that the bundle of plates is formed by plates of frustoconical shape superimposed on each other and delimiting between them, on the one hand, a series of channels containing the catalyst and forming a first circuit for circulation of the reactant fluid and, on the other hand, a series of channels forming a second circuit for circulation of the heat-transfer fluid, the first circuit and the second circuit communicating with the means for admitting and discharging the reactant fluid respectively t heat transfer fluid.
- the catalytic reactor comprises means for loading and unloading the catalyst from the series of channels forming the first circuit for circulation of the reactant fluid,
- the frustoconical plates are smooth or have undulations
- the channels of the first circuit and of the second circuit are alternated with respect to each other, the plates of the bundle of plates form, on the one hand, in the axis of the sealed enclosure, a central well into which opens a first end of the channels of the first and second circuits respectively and, on the other hand, with said sealed enclosure an annular space into which opens a second end of the channels of the first and second circuits respectively,
- the means for admitting the reactant fluid comprise an inlet pipe passing through the sealed enclosure and connected with the lower end of the central well of the bundle of plates in order to put the first end of the channels forming the first circulation circuit into communication this fluid reacting with said inlet pipe
- the means for discharging the reactant fluid comprise an outlet pipe opening into said sealed enclosure at the level of the annular space and communicating with the second end of the channels forming the first circuit of circulation of this reactant fluid
- the means for admitting the heat-transfer fluid comprise a main tube passing through the sealed enclosure and conduits each connecting said main tube and a vertical internal manifold extending over the entire height of the central well and covering a portion of the first ends channels forming the circuits,
- the means for evacuating the heat transfer fluid comprise several conduits passing through the sealed enclosure and each connected to a vertical external collector extending over the entire height of the bundle of plates at the level of the annular space and covering a portion of the seconds ends of the channels forming the circuits, the internal collectors and the external collectors are distributed in a star,
- the first ends of the channels forming the first circuit and situated between the internal collectors are open and the first ends of said channels situated below the internal collectors are each closed for example by a plate,
- the second ends of the channels forming the second circuit and located between the external collectors are each closed for example by a plate and the second ends of said channels located below the external collectors are open,
- the means for loading the catalyst into the channels of the first circuit are formed by an inlet pipe passing through the upper part of the sealed enclosure and connected to the first open ends of the channels forming the first circuit by a tubular sheath disposed in the well central and extending over the entire height of said central well, said tubular sheath allowing the passage of the reactant fluid from the inlet tubing to said first open ends,
- the means for discharging the catalyst from the channels of the first circuit are formed by an outlet pipe leading to the lower part of the watertight enclosure and connected to the second open ends of the channels forming the first circuit by a tubular sheath disposed in the annular space and extending from the upper edge of the plate bundle to the lower part of said sealed enclosure, said tubular sheath allowing the passage of the reactant fluid from said second open ends to the outlet pipe.
- FIG. 1 is a schematic perspective view partially cut away of a catalytic reactor according to the invention
- - Fig. 2 is a cross-sectional view of the catalytic reactor according to the invention
- - Figs. 3 to 6 are partial views and on a larger scale respectively according to the details 3 to 6 of FIG. 2
- - Fig. 7 is a partial developed view of the internal face of the bundle of plates of the catalytic reactor according to the invention
- FIG. 8 is a partial developed view of the external face of the bundle of plates of the catalytic reactor according to the invention.
- FIGS. 1 and 2 show schematically a catalytic plate reactor designated as a whole by the reference 1 and intended more particularly for highly endothermic or exothermic chemical reactions, in which heat transfer takes place between a fluid reactant A which reacts on contact with a catalyst and a heat transfer fluid B which provides or withdraws heat to the reactant fluid A.
- the transfer of heat between the two fluids A and B makes it possible to increase the yield of the chemical reaction.
- the sealed enclosure 1 is formed by a cylindrical central part 2 arranged vertically and provided, at its upper end, with an upper convex bottom 3 and, at its lower end, with a lower convex bottom 4.
- a bundle of plates designated by the general reference 10 extending over a part of the length of this sealed enclosure 1 and oriented along the vertical axis of said sealed enclosure 1.
- the bundle of plates 10 is formed by plates 11 each of frustoconical shape superimposed relative to one another so as to delimit between them intervals the slope of which is directed from top to bottom with respect to to the axis of the sealed enclosure 1.
- the delimited intervals between the plates 11 determine, on the one hand, a series of channels 20 forming a first circuit for circulation of the reactant fluid A and, on the other hand, a series of channels 30 forming a second circuit for circulation of the heat-transfer fluid B.
- the channels 20 of the first circuit and the channels 30 of the second circuit are alternated with respect to each other and in the embodiment shown in the figures, the channels 20 are arranged between the channels 30.
- the channels 20 of the first circuit circulation of the reactant fluid A are filled with a catalyst 5 formed by grains of small dimensions and of any shape.
- the plates 11 superimposed on the bundle of plates 10 determine, on the one hand, in the axis of the sealed enclosure 1 a central well 6 and, on the other hand, with said sealed enclosure 1 a peripheral annular space 7.
- the catalytic reactor also comprises means for admitting and evacuating the reactant fluid A, means for admitting and evacuating the heat transfer fluid B and means for loading and unloading the catalyst 5 from the series of channels 20 forming the first circulation circuit of said reactant fluid A.
- the means for admitting the reactant fluid A comprise an inlet pipe 23 passing through the lower convex bottom 4 of the sealed enclosure 1 and connected with the lower end of the central well 6 of the bundle of plates 10 to put in communication the first end 21 of the channels 20 forming the first circuit for circulation of the reactant fluid A with said inlet pipe 23.
- the means for evacuating this reactant fluid A after the passage of the latter in the channels 20 containing the catalyst 5 comprises an outlet pipe 24 opening out substantially in the middle part of the enclosure watertight 1 at the peripheral annular space 7 and communicating with the second end 22 of the channels 20 which opens into this peripheral annular space 7.
- the means for admitting the heat transfer fluid B comprise a main pipe 33 passing through the upper convex bottom 3 of the sealed enclosure 1 and conduits 34 each connecting said main pipe 33 with a vertical internal manifold 35.
- Each internal manifold 35 extends over the entire height of the central well 6 and covers a portion of the first end 31 of the channels 30 forming the second circulation circuit of said heat transfer fluid B.
- FIG. 7 which is a partial developed view of the internal wall of the bundle of plates 10, that is to say of the internal face at the level of the central well 6, the reactant A and coolant B fluids are channeled respectively in the channels 20 and the channels 30.
- the first ends 21 of the series of channels 20 forming the first circuit for circulation of the reactant fluid A and situated between the internal collectors 35 are open and the first ends 21 of said channels 20 situated below the collectors internals 35 are each closed for example by a plate 25.
- first ends 31 of the series of channels 30 forming the second circuit for circulation of the heat transfer fluid B and located between the internal collectors are each closed for example by a plate 36 while the first ends 31 of these channels 30 located at the above the internal collectors 35 are open.
- the means for evacuating the heat transfer fluid B comprise several independent conduits 37 which pass through the lower curved bottom 4 of the sealed enclosure 1 and which are each connected to a vertical external manifold 38 disposed in the annular space 7.
- Each external manifold 38 extends over the entire height of the external wall of the bundle of plates 10 at said annular space 7 and covers a portion of the second end 32 of the series of channels 30 forming the second circulation circuit of the heat transfer fluid B.
- FIG. 8 which is a partial developed view of the external face of the bundle of plates 10, that is to say at the level of the annular space 7, the second ends 22 of the channels 20 forming the first circuit for circulation of the reacting fluid A and situated between the external collectors 38 are open while the second ends 22 of said channels 20 situated below the external collectors 38 are each closed for example by a plate 26.
- the second ends 32 of the channels 30 forming the second circuit for circulation of the heat transfer fluid B and located between the external collectors 38 are each closed for example by a plate 39 and the second ends 32 of said channels 30 located below external collectors 38 are open.
- the means for loading the catalyst 5 through the first ends 21 of the channels 20 inside the first circulation circuit of the reactant fluid A are formed by an inlet pipe 40 passing through the upper convex bottom 3 of the sealed enclosure 1 and connected to the first open ends 21 of the channels 20 forming said first circuit cooked, by a tubular sheath 41 disposed inside the central well 6.
- the inlet pipe 40 opens into a manifold 42 fixed on the upper end of the central well 6.
- a cone 43 is arranged inside the manifold 42 on the upper end of the central well 6 so as to channel the catalyst 5 discharged through the inlet pipe 40 inside the tubular sheath 41 towards the inlets 21 of the series of channels 20.
- the bottom of the central well 6 is closed by a horizontal plate 44 formed by a grid.
- the lower part of the internal collectors 35 is closed by an annular grid leaving free the central section of the well 6.
- the tubular sheath 41 extends over the entire height of the central well 6 and allows the passage of the reactant fluid A of the inlet pipe 23 to the first open ends 21 of the series of channels.
- this tubular sheath 41 is formed by a grid.
- the means for discharging the catalyst 5 from the channels 20 of the first circulation circuit of the reactor fluid A when this catalyst 5 is worn out, are formed by an outlet pipe 45 passing through the lower convex bottom 4 of the sealed enclosure 1 and which is connected at the second open ends 22 of the channels 20 forming the first circuit by a tubular sheath 46 (Figs. 2 and 6) disposed in the peripheral annular space 7.
- This tubular sheath 46 extends from the upper edge of the outlets 32 of the channels 30 of the plate bundle 10, to the lower part of the enclosure 1 and allows the passage of the reactant fluid A from the second open ends 22 to the outlet pipe 45.
- the tubular sheath 46 is formed by a grid.
- the plates 25, 36 and 26, 39 are welded to the edges 11 of the plate bundle 10 and the collectors 35 and 38 are also welded to the plates 11 and can also be used to hold these plates together.
- the reactant fluid A arriving through the inlet pipe 23 passes through the grid 44 and spreads into the central well 6.
- This reactant fluid A enters the series of channels 20 of the first circuit through the first open ends 21 of these channels 20.
- the reactant fluid A After passing through the series of channels 20, the reactant fluid A passes through the tubular sheath 46, spreads inside the sealed enclosure 1 and is discharged through the outlet pipe 24.
- the heat transfer fluid B arrives via the main pipe 33 and through the conduits 34 in the internal collectors 35.
- the heat transfer fluid B enters the series of channels 30 of the second circuit passing through the open ends 31 of this second circuit and diffuses uniformly in all of the channels 30.
- this heat transfer fluid performs a heat transfer by providing or removing heat from the reactant fluid 1, which makes it possible to increase the yield of the chemical reaction.
- the heat transfer fluid B exits through the second open ends 32 of the channels 30, then is recovered by the external collectors 38 and is evacuated by the outlet conduits 37.
- the plates 11 of frustoconical shape of the beam of plates 10 can be smooth or have corrugations.
- the outlet pipe 45 is open and the catalyst 5 flows through this outlet pipe 45 and, due to the slope of the channels 20, this catalyst 5 is evacuated from said channels 20.
- the outlet pipe 45 is closed and the new catalyst 5 is discharged through the inlet pipe 40 inside the tubular sheath 41 and spreads in the channels 20 of the first circuit of circulation of reactant fluid A.
- the configuration of the reactor according to the invention offers the advantage of a truly co-current heat exchange configuration, over the major part of the exchange length.
- the configuration of the catalytic reactor according to the invention makes it possible to be able to circulate fluids at higher pressure differences.
- the catalytic reactor according to the invention has the advantage, by its design, of being compact thanks to the shape of the bundle of plates which advantageously fills the space of the sealed envelope which thus makes it possible to reduce the cost of this waterproof envelope.
- the catalytic reactor according to the invention has better resistance to the pressure difference between the fluids, also thanks to the shape of the plates making up the bundle of plates, which makes it possible to balance the pressure difference by developing a stress. circumferential that it is easy to maintain below a given admissible value for the material making up the plates, by adjusting the thickness of these plates.
- the catalytic reactor according to the invention allows easy filling of catalyst due to the slope of the channels and easier access to the interior of the plate bundle for cleaning or maintenance inspection.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9902918A FR2790680B1 (fr) | 1999-03-09 | 1999-03-09 | Reacteur catalytique a faisceau de plaques |
| FR99/02918 | 1999-03-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000053312A1 true WO2000053312A1 (fr) | 2000-09-14 |
Family
ID=9542990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR2000/000373 Ceased WO2000053312A1 (fr) | 1999-03-09 | 2000-02-15 | Reacteur catalytique a faisceau de plaques |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR2790680B1 (fr) |
| WO (1) | WO2000053312A1 (fr) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4340501A (en) * | 1979-09-06 | 1982-07-20 | Imperial Chemical Industries Limited | Fluid flow |
| EP0766999A1 (fr) * | 1993-07-05 | 1997-04-09 | Packinox Sa | Procédé et appareil pour la régulation de températures réactionnelles |
-
1999
- 1999-03-09 FR FR9902918A patent/FR2790680B1/fr not_active Expired - Lifetime
-
2000
- 2000-02-15 WO PCT/FR2000/000373 patent/WO2000053312A1/fr not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4340501A (en) * | 1979-09-06 | 1982-07-20 | Imperial Chemical Industries Limited | Fluid flow |
| EP0766999A1 (fr) * | 1993-07-05 | 1997-04-09 | Packinox Sa | Procédé et appareil pour la régulation de températures réactionnelles |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2790680B1 (fr) | 2001-06-08 |
| FR2790680A1 (fr) | 2000-09-15 |
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