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WO2017020990A1 - Dispositif d'étanchéité, colonne d'échange de matière et procédé associé - Google Patents

Dispositif d'étanchéité, colonne d'échange de matière et procédé associé Download PDF

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Publication number
WO2017020990A1
WO2017020990A1 PCT/EP2016/001218 EP2016001218W WO2017020990A1 WO 2017020990 A1 WO2017020990 A1 WO 2017020990A1 EP 2016001218 W EP2016001218 W EP 2016001218W WO 2017020990 A1 WO2017020990 A1 WO 2017020990A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing
thermal expansion
packing
sealing strip
strip
Prior art date
Application number
PCT/EP2016/001218
Other languages
German (de)
English (en)
Inventor
Karlmann Kanzler
Original Assignee
Linde Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Linde Aktiengesellschaft filed Critical Linde Aktiengesellschaft
Publication of WO2017020990A1 publication Critical patent/WO2017020990A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/14—Fractional distillation or use of a fractionation or rectification column
    • B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
    • B01D3/324—Tray constructions
    • B01D3/328—Sealing between the column and the trays
    • 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
    • B01J19/30—Loose or shaped packing elements, e.g. Raschig rings or Berl saddles, for pouring into the apparatus for mass or heat transfer
    • B01J19/305—Supporting elements therefor, e.g. grids, perforated plates
    • 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
    • B01J19/325—Attachment devices therefor, e.g. hooks, consoles, brackets
    • 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
    • B01J2219/32275—Mounting or joining of the blocks or sheets within the column or vessel

Definitions

  • the invention relates to a sealing device for sealing a packing disc against an inner wall of a container of a mass transfer column, a mass transfer column with such a sealing device and a method for sealing a packing disk against an inner wall of a container of such a mass transfer column.
  • Mass transfer column has a cylindrical container in which a so-called packing is arranged.
  • Disordered packs are packings of defined shaped bodies such as rings, cylinders, saddles or the like.
  • ordered packings metal mesh or sheets are folded and / or wound so as to result in an intensive steering of the vapor and liquid and the associated intense contact of both. By further structuring of the surface and by the attachment of holes, both the wettability of the packing surface and the mass transfer are further increased.
  • ordered packs several pack sheets are stacked into packs of slices. The pack slices can be divided into one piece or into block-shaped pack packages., Several stacked pack disks form one
  • Packing section which may also be referred to as a packing bed or packing section.
  • a plurality of such packing sections can be arranged one above the other in the container.
  • the package disks are formed from corrugated and / or perforated aluminum sheets for surface enlargement. Air components can condense on the aluminum sheets. To mount the packing discs in the container and because of manufacturing tolerances the packing discs a
  • Packing discs provided a circumferential sealing gap.
  • the sealing gap changes into usually its width depends on temperature. This is mainly due to a different thermal expansion of the packing disks and the inner wall of the container, which is due to the fact that the packing disks have a different temperature than the inner wall, which is influenced by the ambient temperature. In the event that different materials with different thermal expansion coefficients are used for the packing disks and the inner wall, this results in an additional influence on the thermal expansions and thus on a width of the sealing gap.
  • a sealing device can be arranged in the sealing gap.
  • WO 96/40428 A1 describes such a sealing device, which is arranged circumferentially around a packing disc and screwed thereto.
  • the sealing device is annularly placed around the packing disc and resiliently deformable.
  • the sealing device has fan-like sealing lamellae.
  • the object of the present invention is to provide an improved sealing device.
  • the sealing device comprises a around the packing disc
  • Sealing tapes have the packing disk circumferential side walls and wherein the second sealing tape is arranged between the side walls of the first sealing tape.
  • the packing disk can also be called an ordered packing disk.
  • Several packing discs form an ordered packing section.
  • Several packing sections form an ordered packing of the mass transfer column.
  • the sealing device can also be referred to as a sealing collar.
  • Packing disc can be assigned at least one sealing device.
  • each packing disc may be associated with two or three sealing devices.
  • several packing sections with each be arranged several packing discs.
  • the packing discs are
  • the inner wall of the container may be made of an aluminum material or a
  • the sealing bands are made of different materials.
  • the sealing tapes may comprise, for example, steel, copper, aluminum or other metals and / or non-metals.
  • the mass transfer column may be a rectification or air separation column.
  • the first sealing strip can also be referred to as the innermost sealing strip
  • the second sealing strip can also be referred to as the outermost sealing strip. Characterized in that the coefficients of thermal expansion of the materials of the first sealing band and the second sealing band differ from each other, the first sealing band and the second sealing band contract or expand during cooling or heating of the mass transfer column from a mounting temperature to an operating temperature differently
  • Seal at least partially seal.
  • a height of the side walls is in particular so dimensioned that the
  • Sealing tapes can not slip apart. As a result, the sealing function is always guaranteed.
  • the side walls of a respective sealing strip are arranged obliquely so that they face away from each other.
  • the side walls are preferably each inclined at a flank angle.
  • the flank angles of the different sealing bands can differ from each other. Be the edge angle of the sealing strips in relation to their
  • the sealing device can easily but not completely sealed or with light or strong pressure, in which the sealing effect is optimal, but the ease is impaired, are running.
  • the second sealing band surrounds the first sealing band at least partially.
  • the sealing tapes can interlock positively.
  • a positive connection is to be understood as a connection in which one component mechanically blocks another component.
  • the thermal expansion coefficient of the material from which the first sealing band is made is greater than that Thermal expansion coefficient of the material from which the second sealing strip is made.
  • the first sealing band contracts at an operating temperature of
  • the operating temperature may be about -180 ° C, for example.
  • the sealing bands have radially different expansions and thus bridge the sealing gap. This can be a
  • Seal the sealing gap can be achieved. Even with temperature fluctuation, the function of the sealing device is guaranteed. Upon cooling of the mass transfer column from the mounting temperature to the operating temperature, the sealing bands move relative to each other. Alternatively, if the operating temperature above the
  • Mounting temperature is, the coefficient of thermal expansion of the material from which the first sealing strip is made, smaller than the thermal expansion coefficient of the material from which the second sealing strip is made.
  • the sealing gap is closed during heating of the mass transfer column of the assembly temperature to the operating temperature.
  • a third to N-th sealing tape is disposed between the first sealing strip and the second sealing strip, wherein the
  • Material, from which the first sealing tape is made differs.
  • the third sealing tape may also be referred to as a middle or intermediate sealing tape.
  • the number of sealing strips arranged between the first sealing strip and the second sealing strip is arbitrary. Where n ⁇ 2 ⁇ .
  • the third to nth sealing tape is optional.
  • the third sealing band is provided between the first sealing band and the second sealing band, and a fourth sealing band is provided between the third sealing band and the second sealing band. It is in the event that the operating temperature is below the mounting temperature, the
  • Thermal expansion coefficient of a material of the fourth sealing band greater than the Thermal expansion coefficient of the material of the second sealing band and smaller than the coefficient of thermal expansion of the material of the third sealing band.
  • the coefficient of thermal expansion of the material of which the third to nth sealing band is made is greater than that
  • Thermal expansion coefficient of the material from which the second sealing strip is made wherein the coefficient of thermal expansion of the material from which the third to n-th sealing tape is made, is smaller than the coefficient of thermal expansion of the material from which the first sealing strip is made.
  • the coefficients of thermal expansion of the first to nth sealing tape materials are preferably in the case where the operating temperature is less than that
  • Mounting temperature is from the inside out, that is, in the direction of the
  • Thermal expansion coefficient increase from the inside to the outside. That is, when the operating temperature is above the mounting temperature, the
  • the coefficient of thermal expansion of the material of which the third to nth sealing strips are made is smaller than the coefficient of thermal expansion of the material of which the second sealing strip is made and the coefficient of thermal expansion of the material
  • Material from which the third to n-th sealing tape is made may be greater than the coefficient of thermal expansion of the material from which the first sealing strip is made.
  • each sealing band can be prestressed with the aid of at least one connecting element assigned to it.
  • each sealing band is assigned at least one such connecting element.
  • the connecting elements are riveted to the sealing tapes, for example, screwed or mutually positively interlocked by plastic deformation.
  • ends of each sealing band are connected to one another with the aid of the at least one connecting element.
  • the sealing tapes can be preloaded with the aid of a clamping tool.
  • the at least one connecting element is arranged centrally on a base portion of the sealing band. Alternatively, on either side of each base portion each such a connection element may be provided.
  • the fastening claws may, for example, be triangular and are adapted to claw into the packing disc.
  • the sealing tape can be fastened with screws to the packing disc.
  • At least the first sealing strip has a base portion and a side flap, with the aid of which the base portion is spaced from the packing disc, wherein the side flap is resiliently deformable.
  • Each sealing band may comprise two laterally arranged side flaps.
  • the side flaps may form a lateral sealing surface of the sealing device. Due to the elastic properties of the side flaps, the sealing strips can be more generously tolerated in the production, whereby they are less expensive to produce.
  • the first sealing band is wider than the second sealing band.
  • the first sealing strip preferably encloses the second sealing strip at least in sections.
  • the first sealing band is spring-biased with respect to the packing disc.
  • the first sealing strip is at least partially made of a bimetal.
  • a temperature-dependent deformation of the sealing strip can be achieved. For example, such a stronger pressing of the first sealing tape to the
  • Packing disc can be achieved. Further, a mass transfer column comprising a container, a packing disk accommodated in the container, and such sealing means for sealing the packing disk against an inner wall of the container
  • the mass transfer column may be a rectification or air separation column.
  • the sealing device comprises a first sealing strip and a second
  • Sealing means is moved by means of a temperature change from an assembly temperature to an operating temperature from an initial state to a final state and wherein when the sealing device is moved from the initial state to the final state, a gap provided between the sealing device and the inner wall of the container is reduced.
  • the materials of the first sealing band and the second sealing band are selected so that the coefficient of thermal expansion of the material from which the first sealing band is made is greater than the coefficient of thermal expansion of the material from which second sealing tape is made.
  • the materials of the first sealing band and the second sealing band are selected so that the
  • the method comprises the following steps:
  • the above steps are performed several times in succession until a packing section is assembled comprising the stacked packing disks.
  • Several such packing sections form the
  • the method comprises the following steps: providing the sealing device; Inserting the first sealing tape into the container; Inserting the second sealing band into the first sealing band; and placing at least two packages of packages in the first sealing tape to form the package disk.
  • the sealing tapes are inserted into the horizontal container.
  • the sealing bands are pretensioned with respect to the package disk.
  • the sealing tapes can be clamped in the sealing gap with special pliers.
  • the first sealing strip may comprise spacer feet, with which it rests on the first sealing strip of an underlying packing disc. Then can be dispensed with a distortion of the sealing strips.
  • sealing device of the mass transfer column and / or of the method also include not explicitly mentioned combinations of features or embodiments described above or below with regard to the exemplary embodiments.
  • the expert is also individual aspects as Add improvements or additions to the respective basic form of the sealing device, the mass transfer column and / or the method.
  • Mass transfer column and / or the method are the subject of the subclaims and their embodiments described below the sealing device, the mass transfer column and / or the method.
  • the sealing device the mass transfer column and / or the method.
  • Fig. 1 shows a schematic sectional view of an embodiment of a
  • FIGS. 2A to 2E show schematic views of various embodiments of a sealing gap between a packing disc and an inner wall of a
  • Fig. 3 shows a schematic sectional view of an embodiment of a
  • FIG. 4 shows a further schematic sectional view of the sealing device according to FIG. 3;
  • Fig. 5 shows a schematic sectional view at mounting temperature (upper half) and at a lower operating temperature (lower half) of another
  • FIG. 6 shows a further schematic sectional view of the sealing device according to FIG. 5;
  • FIG. 7 shows a schematic perspective view of a further embodiment of a sealing device for the mass transfer column according to FIG. 1;
  • FIG. 7 shows a schematic perspective view of a further embodiment of a sealing device for the mass transfer column according to FIG. 1;
  • FIG. 8 shows a schematic sectional view of the sealing device according to FIG. 7
  • FIG. 9 shows a schematic sectional view of a further embodiment of a sealing device for the mass transfer column according to FIG. 1;
  • FIG. 10 shows a schematic sectional view of a further embodiment of a sealing device for the mass transfer column according to FIG. 1;
  • FIG. 11 shows a schematic perspective view of the sealing device according to FIG. 10
  • FIG. FIG. 12 shows a schematic sectional view of a further embodiment of a sealing device for the mass transfer column according to FIG. 1;
  • FIG. 11 shows a schematic perspective view of the sealing device according to FIG. 10
  • FIG. 12 shows a schematic sectional view of a further embodiment of a sealing device for the mass transfer column according to FIG. 1;
  • FIG. 12 shows a schematic perspective view of the sealing device according to FIG. 10
  • FIG. 12 shows a schematic sectional view of a further embodiment of a sealing device for the mass transfer column according to FIG. 1;
  • FIG. 13 shows a schematic perspective view of the sealing device according to FIG. 12;
  • FIG. 14 shows a schematic sectional view of a further embodiment of a sealing device for the mass transfer column according to FIG. 1;
  • FIG. 14 shows a schematic sectional view of a further embodiment of a sealing device for the mass transfer column according to FIG. 1;
  • FIG. 15 shows a schematic sectional view of a further embodiment of a sealing device for the mass transfer column according to FIG. 1; FIG. and
  • FIG. 16 shows a schematic block diagram of two embodiments of a method for sealing a packing with respect to an inner wall of a container of the mass transfer column according to FIG. 1.
  • Fig. 1 shows a schematic sectional view of an embodiment of a mass transfer column 1.
  • the mass transfer column 1 may be a rectification or air separation column.
  • rectification is meant a thermal separation process which is an extension of the distillation or a series of many distillation steps.
  • the advantages of rectification are that the plant can be operated continuously and that the separation effect is many times higher than that of distillation, since the steam in the Counterflow with the liquid several times in contact.
  • the column thus works energetically cheaper, technically less expensive and space-saving than a series connection of single distillations.
  • the mass transfer column 1 comprises a container 2, which is a cylindrical
  • the container 2 may be made, for example, from an aluminum material or a steel factory off. Preferably, the container 2 is made of an aluminum material.
  • the container 2 is cylindrically constructed around an axis 3. In the container 2, a plurality of ordered packing disks 4
  • the packing discs 4 may be so-called structured
  • Packing discs 4 be. Such structured packing disks 4 consist of thin, corrugated and / or perforated metal plates or wire nets. The design of the packing discs 4 ensures an optimum exchange between the different phases (liquid / gaseous or liquid / liquid) with minimal pressure resistance.
  • the packing disks 4 are arranged one above the other in the container 2. The number of packing disks 4 is arbitrary. The
  • Packing disks 4 can be made of vertically arranged corrugated
  • the packing disks 4 form condensation surfaces on which the air components can condense.
  • the aluminum sheets used may have a thickness of 0.1 millimeter.
  • the packing disks 4 form an ordered packing section 5.
  • Packing section 5 may also be referred to as a packing section or packing bed. Above the packing section 5, one or more further such packing sections 5 of similar structure may be located. For example, each packing section 5 has ten to twenty packing disks 4.
  • Packing sections 5 form an ordered packing of the mass transfer column 1. Furthermore, the mass transfer column 1 can have feed, discharge, collecting and / or distribution devices which are not shown in FIG. 1 for the sake of simplicity. For example, a distribution device can be provided above each packing section 5 and a collecting device below each packing section 5.
  • Each packing disc 4 can be completely prefabricated as a disc-shaped unit. Alternatively, each package disk 4 may be packaged 26-28 be segmented. In the orientation of Fig. 1, only the uppermost packing disk 4 is shown segmented. The number of packs 26 to 28 per
  • Packing disk 4 is arbitrary.
  • the packing disks 4 each have a thickness of 200 to 220 millimeters.
  • a supporting device 6 supports each packing section 5.
  • the carrying device 6 may comprise a supporting ring, which runs around an entire circumference of the mass transfer column 1 and is connected in a materially bonded manner to the container 2, for example by means of a welded or soldered connection.
  • the carrying device 6 may comprise a support grid, which consists of a plurality of support profiles and which rests on the support ring, and a grid, which in turn rests on the support grid.
  • the packing section 5 is then directly on the grid.
  • each packing disk 4 may be assigned such a sealing device 9 or a plurality of such sealing devices 9.
  • liquefied air is introduced into the mass transfer column 1.
  • the liquefied air boils at about -180 ° C.
  • the liquefied air can be fractionated into its constituents by dividing the different boiling points of the individual
  • the rectification is carried out at a pressure of about 5 to 6 bar.
  • nitrogen, oxygen and argon are separated from the air.
  • the air components condense on the
  • the packing section 5 may have a height h 5 of about three to nine meters. At low temperature, that is, at the operating temperature T 'of the mass transfer column 1, an outer diameter of the packing section 5 shrinks more than one
  • the differential thermal expansion of the container 2 and the packing section 5 may result from the temperature of the packing section 5 being lower than that of the inner wall 7 adjoining the surroundings and the second Using different materials for the packing section 5 and the inner wall 7 of the container 2.
  • the packing section 5 is made of a
  • Aluminum material and the inner wall 7 of the container 2 is usually also made of an aluminum material in the low temperature range.
  • the sealing device 9 prevents or obstructs at least one flow of vaporized air components through the sealing gap 8. That is, the sealing device 9 is not necessarily fluid-tight, but at least forms a flow resistance for the vaporized air components.
  • each packing disk 4 is assigned at least one such sealing device 9.
  • FIG. 2A to 2E show different gap geometries of the sealing gap 8.
  • FIG. 2A shows an annular sealing gap 8, as it is present in the mass transfer column 1 according to FIG.
  • FIG. 2B shows a sealing gap 8 with an elliptical geometry.
  • FIG. 2C shows a sealing gap 8 with a rectangular geometry.
  • FIG. 2D shows a sealing gap 8 with a hexagonal geometry.
  • FIG. 2E shows a rectangular sealing gap 8 with rounded corners.
  • the sealing device 9 comprises a first sealing strip 10 revolving around the packing disk 4 and a second sealing strip 11 revolving around the first sealing strip 10, wherein the thermal expansion coefficient a 10 of a material, from which the first sealing strip 10 is made, is greater than that
  • a mounting temperature T for mounting the sealing device 9 is greater than the operating temperature T 'for operating the mass transfer column 1.
  • the materials of the sealing tapes 10, 11 are to be selected so that that the Thermal expansion coefficient ⁇ 10 of the material from which the first sealing strip 10 is made, is smaller than the thermal expansion coefficient of the material from which the second sealing strip 11 is made. In the following, however, becomes
  • a third sealing band 12 is arranged between the first sealing band 10 and the second sealing band 11.
  • Any number, for example n, can be arranged on sealing tapes 12 between the first sealing strip 10 and the second sealing strip 11, n ⁇ 0 being greater than the thermal expansion coefficient a 2 of a material from which the third sealing strip 12 is made Thermal expansion coefficient of the material from which the second sealing strip 11 is made and smaller than that
  • Thermal expansion coefficient a 10 of the material from which the first sealing strip 10 is made is greater than the thermal expansion coefficient of the material from which the second sealing band 11 is made smaller than that
  • Thermal expansion coefficient a 2 of the material from which the third sealing strip 12 is made In the following, only three sealing tapes 10 to 12 will be discussed.
  • the sealing tapes 10 to 12 are positively in one another. Under one
  • Interlocking connection is to be understood as a connection in which one component mechanically blocks another.
  • the engagement of two gears in one another is a positive engagement.
  • the sealing tapes 10 to 12 each have a base portion 13.
  • the base portions 13 of the sealing strips 10 to 12 are arranged so that they lie on each other during installation. At the respective
  • Base portion 13 connects on both sides of this one side wall 14, 15 at.
  • the side walls 14, 15 of the third sealing band 12 are arranged between the side walls 14, 15 of the first sealing band 10 and the side walls 14, 15 of the second sealing band 11 are arranged between the side walls 14, 15 of the third sealing band 12.
  • the first sealing tape 10 may further comprise fastening claws 16, 17 for attaching the first sealing tape 10 to the packing disk 4.
  • the sealing tapes 10 to 12 are made of different materials. Upon reaching the operating temperature of the packing section 5, the sealing gap 8 is filled and sealed by the various expansions of the sealing strips 10 to 12. Ends of each sealing band 10 to 12 are connected to each other by means of at least one connecting element 18.
  • each sealing strip 10 to 12 can be prestressed.
  • Each sealing band 10 to 12 may have two such connecting elements 18, which are arranged on both sides of the base portion 13.
  • the connecting elements 18 are provided on both sides of the base portion 13 provided connecting element regions 19, 20 of the sealing strips 10 to 12.
  • the sealing strips 10 to 12 can be connected by means of the connecting elements 18 at their ends.
  • the sealing strip 10 can continue in addition to the fastening claws 16, 17 by means of a screw 21, in particular a self-tapping
  • Chipboard screw be attached to the packing disk 4.
  • FIGS. 5 and 6 The mode of operation of the sealing device 9 will be explained with reference to FIGS. 5 and 6.
  • the sealing device 9 In the orientation of FIG. 5, the sealing device 9 is shown in the upper half before it has reached the operating temperature T and the sealing device 9 on the underside after reaching the operating temperature T '. In FIG. 5, only one half of the sealing device 9 is shown in each case. In the orientation of FIG. 5, a first or initial state of the sealing device 9 and in the lower half a second or final state of the sealing device 9 is thus shown in the upper half.
  • the first or innermost sealing strip 10 is clamped tightly against the packing disk 4.
  • the sealing strips 1 1 and 12 are placed on the sealing strip 11 such that the third sealing strip 12 between the
  • Connecting elements 18 can be riveted or screwed with the sealing strips 10 to 12. It can be used to clamp a special
  • Bracing tool in particular a collet to be used. With the bracing tool, it is also possible to deform the connecting elements 18 with the sealing tapes 10 to 12 into each other or to squeeze, so that a firm connection is formed.
  • the packing disk 4 has during assembly an external pressure gauge d 4 , which at the same time corresponds to an inner diameter d 10 of the innermost sealing tape 10.
  • the third sealing strip 12 arranged between the first sealing strip 10 and the second sealing strip 11 has an inner diameter d 2 during assembly which is greater than the diameter d 4 .
  • a gap 22 is provided which is greater than or equal to 0 millimeters.
  • the second or outermost sealing strip 1 1 has a diameter du during assembly. Between an outer edge of the outermost sealing strip 1 1 and the inner wall 7 of the container 2, a gap 23 is provided. That is, in the initial state, the second touches
  • the packing disk 4 can be introduced into the container 2. This facilitates the installation of the packing disk 4.
  • a further gap 24 is provided, which is also greater than or equal to 0 millimeters.
  • the situation after reaching the operating temperature T is shown, which is smaller than the mounting temperature T in the illustrated case.
  • the material of the first sealing band 10 has the coefficient of thermal expansion a 0
  • the material of the second sealing band 11 has the thermal expansion coefficient
  • the material of the third sealing band 12 has the
  • Sealing strip 12 which shrinks to a dimension d 12 '.
  • the third sealing band 12 in turn shrinks more than the outermost sealing band 11, which shrinks to a degree du '.
  • the gap 23 is reduced to a gap 23 ', which in the ideal case when the
  • Linear expansion coefficient ⁇ 4 , ⁇ 7 , a 10 , and a 2 at the operating temperature T 'of the mass transfer column 1 are optimally selected to zero.
  • Flank angle ßn, ß 12 , the sealing device 9 therefore easily but not completely sealed or with light or heavy pressure, in which the sealing effect is optimal, but the ease is impaired, are executed.
  • the flank angles ßn and ß 2 can be made different sizes.
  • a height h 14 i 5 of the side walls 14, 15 is to be chosen so that the sealing tapes 10 to 12 do not fall apart at the operating temperature T '.
  • the sealing tapes 10 to 12 may further be formed of a resilient material, so that
  • FIGS. 7 and 8 each show, in a schematic perspective view, a further embodiment of the sealing device 9.
  • the connecting elements 18 are provided centrally on the sealing tapes 10 to 12.
  • the sealing tapes 10 to 12 may have obliquely arranged side flaps 25, which form a sealing surface of the sealing device 9.
  • FIG. 9 shows a further embodiment of the sealing device 9 in which the sealing bands 10 to 12 are resiliently pressed against one another during mounting. A better grip of the individual sealing tapes 10 to 12 is ensured.
  • the connecting elements 18 are arranged centrally on the sealing strips 10 to 12.
  • FIGS. 10 and 11 show a further embodiment of the sealing device 9.
  • the sealing device 9 according to FIGS. 10 and 11 differs from that of FIG.
  • the fastening claws 16, 17 may be triangular, tapered, tooth-shaped and / or trapezoidal. Furthermore, the
  • Fixing claws 16, 17 rounded at the base of the tooth and / or at the tooth tip, rectangular, sawtooth and / or circumferentially full-toothed or have areas with one or more teeth alternately with areas without teeth.
  • FIGS. 12 and 13 show a further embodiment of the sealing device 9, wherein in Figs. 12 and 13, only the innermost sealing strip 10 is shown.
  • Connecting element regions 19, 20 of the sealing strip 10 are in this case formed curved.
  • a resilient effect is achieved, which increases the sealing effect.
  • FIG. 14 shows a further embodiment of the sealing device 9, wherein in FIG. 14 only the innermost sealing strip 10 is shown.
  • connecting element regions 19, 20 are made of bimetal.
  • the bias of the sealing device 9 is reinforced at the operating temperature T and thus improves the sealing effect.
  • FIG. 15 shows a further embodiment of the sealing device 9, wherein in FIG. 15 also only the innermost sealing strip 10 is shown.
  • the base portion 13 is in this case deformed in the direction of the packing disk 4.
  • Fig. 16 shows a schematic block diagram of a method for sealing the packing disc 4 against the inner wall 7 of the container 2.
  • the sealing device 9 the first sealing strip 10 and the second sealing strip, wherein the coefficient of thermal expansion a 10 of the material from the the first sealing band 10 is made, different from the coefficient of thermal expansion of the material from which the second sealing strip 11 is made, the sealing means 9 is moved by means of a temperature change from the mounting temperature T to the operating temperature T 'from the initial state to the final state and wherein when the sealing device 9 is moved from the initial state to the final state, the gap 23, 23 'provided between the sealing device 9 and the inner wall 7 of the container is reduced. This closes the sealing gap 8.
  • the method further comprises a step S1 of providing the first
  • Thermal expansion coefficient a 10 of the material from which the first sealing strip 10 is made is greater than the thermal expansion coefficient of the material from which the second sealing strip 1 1 is made.
  • the number of sealing tapes 10, 11 is arbitrary. However, at least two sealing bands 10, 1 1 are provided.
  • the preloading can be done with the help of
  • Connecting elements 18 take place.
  • the second sealing strip 11 is wrapped around the first sealing strip 10 and biased.
  • the packing disk 5 is then placed in the container 2 in a step S4.
  • the steps S1 to S4 are repeated several times until the stacked packing disks 4 reach the desired height h 5 of the packing section 5.
  • An alternative method shown in FIG. 16 for sealing the packing disk 4 with respect to the inner wall 7 of the container 2 comprises steps S1 'to S4'.
  • the method comprises a step S1 'of providing the first one
  • Thermal expansion coefficient a 10 of the material from which the first sealing strip 10 is made is greater than the thermal expansion coefficient of the material from which the second sealing strip 11 is made.
  • the number of sealing tapes 10, 1 1 is arbitrary. However, at least two sealing bands 10, 1 1 are provided.
  • the first sealing tape 10 is inserted into the container 2.
  • the second sealing tape 11 is inserted into the first sealing tape 10 lying in the container 2.
  • a step S4 ' at least two packs of packages 26 to 28 are installed so that a packing disk 4 is formed.
  • the sealing strips 10, 1 can be clamped with a clamping tool.
  • the first sealing strip 10 can be kept at a distance from the first sealing strip 10 of the underlying packing disk 4 with spacer feet.
  • a bracing is dispensable.
  • the steps S1 'to S4' are repeated several times until the stacked packing disks 4 reach the desired height h 5 of the packing section 5.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Organic Chemistry (AREA)
  • Gasket Seals (AREA)

Abstract

L'invention concerne un dispositif d'étanchéité (9) servant à rendre une plaque de garnissage (4) étanche vis-à-vis d'une paroi intérieure (7) d'un contenant (2) d'une colonne d'échange de matière (1), comprenant une première bande d'étanchéité (10) entourant la plaque de garnissage (4) et une deuxième bande d'étanchéité (11) entourant la première bande d'étanchéité (10), le coefficient de dilatation thermique (a10) d'une matière à partir de laquelle est réalisée la première bande d'étanchéité (10) étant différent du coefficient de dilatation thermique (an) d'une matière à partir de laquelle est réalisée la deuxième bande d'étanchéité (11), les bandes d'étanchéité (10, 11) présentant des parois latérales entourant la plaque de garnissage (4) et la deuxième bande d'étanchéité (11) étant placée entre les parois latérales (14, 15) de la première bande d'étanchéité (10).
PCT/EP2016/001218 2015-08-04 2016-07-14 Dispositif d'étanchéité, colonne d'échange de matière et procédé associé WO2017020990A1 (fr)

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EP15002321.6 2015-08-04
EP15002321 2015-08-04

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WO2017020990A1 true WO2017020990A1 (fr) 2017-02-09

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3718617A1 (fr) * 2019-04-05 2020-10-07 Linde GmbH Colonne d'échange de matière
US20230278003A1 (en) * 2022-03-07 2023-09-07 L'air Liquide, Societe Anonyme Pour L'etude Et L?Exploitation Des Procedes Georges Claude Packing section for a gas/liquid separation column

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR891411A (fr) * 1941-11-12 1944-03-07 Ig Farbenindustrie Ag Dispositif pour rendre étanche les planchers intermédiaires dans les colonnes de distillation et de lavage
FR2485143A1 (fr) * 1980-06-18 1981-12-24 Bignier Schmid Laurent Dispositif d'etancheite peripherique pour plateau de colonne glisse, notamment de colonne utilisee dans l'industrie chimique
WO1996040428A1 (fr) 1995-06-07 1996-12-19 Linde Aktiengesellschaft Organe annulaire destine a l'etancheification du bord d'une colonne de transfert de matieres remplie d'un garnissage ordonne
EP0860207A1 (fr) * 1997-02-21 1998-08-26 W.L. GORE & ASSOCIATES GmbH Elément d'étanchéité pour colonne à garnissage structuré
US7267330B1 (en) * 2005-07-06 2007-09-11 Jaeger Products, Inc. Split ring seal
WO2014125023A1 (fr) * 2013-02-14 2014-08-21 Basf Se Matériau et procédé pour l'étanchement de cavités

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR891411A (fr) * 1941-11-12 1944-03-07 Ig Farbenindustrie Ag Dispositif pour rendre étanche les planchers intermédiaires dans les colonnes de distillation et de lavage
FR2485143A1 (fr) * 1980-06-18 1981-12-24 Bignier Schmid Laurent Dispositif d'etancheite peripherique pour plateau de colonne glisse, notamment de colonne utilisee dans l'industrie chimique
WO1996040428A1 (fr) 1995-06-07 1996-12-19 Linde Aktiengesellschaft Organe annulaire destine a l'etancheification du bord d'une colonne de transfert de matieres remplie d'un garnissage ordonne
EP0860207A1 (fr) * 1997-02-21 1998-08-26 W.L. GORE & ASSOCIATES GmbH Elément d'étanchéité pour colonne à garnissage structuré
US7267330B1 (en) * 2005-07-06 2007-09-11 Jaeger Products, Inc. Split ring seal
WO2014125023A1 (fr) * 2013-02-14 2014-08-21 Basf Se Matériau et procédé pour l'étanchement de cavités

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3718617A1 (fr) * 2019-04-05 2020-10-07 Linde GmbH Colonne d'échange de matière
US20230278003A1 (en) * 2022-03-07 2023-09-07 L'air Liquide, Societe Anonyme Pour L'etude Et L?Exploitation Des Procedes Georges Claude Packing section for a gas/liquid separation column

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