EP0308430A1 - Structure de jointoyage en particulier pour usage dans une colonne de contact essentiellement pour phases liquides et gazeuses - Google Patents

Structure de jointoyage en particulier pour usage dans une colonne de contact essentiellement pour phases liquides et gazeuses

Info

Publication number
EP0308430A1
EP0308430A1 EP87906148A EP87906148A EP0308430A1 EP 0308430 A1 EP0308430 A1 EP 0308430A1 EP 87906148 A EP87906148 A EP 87906148A EP 87906148 A EP87906148 A EP 87906148A EP 0308430 A1 EP0308430 A1 EP 0308430A1
Authority
EP
European Patent Office
Prior art keywords
sheets
packing
packing structure
sheet
intersection
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP87906148A
Other languages
German (de)
English (en)
Inventor
György FABRY
Jozsef Manczinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0308430A1 publication Critical patent/EP0308430A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • 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
    • B01J2219/32227—Vertical orientation
    • 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
    • B01J2219/32237—Sheets comprising apertures or perforations
    • 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
    • B01J2219/32248—Sheets comprising areas that are raised or sunken from the plane of the sheet
    • 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
    • B01J2219/32255—Other details of the sheets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24628—Nonplanar uniform thickness material
    • Y10T428/24669—Aligned or parallel nonplanarities
    • Y10T428/24694—Parallel corrugations
    • Y10T428/24711—Plural corrugated components

Definitions

  • the invention relates to a packing structure especially for use in a column mainly for contacting liquid and gas phases.
  • the efficiency of a phase-contacting assembly can be characterized by a few number of operational parameters e.g. by the quantity of material that can be processed in a unity volume of column or by the pressure drop that relates to a theo- retical stage, etc.
  • Regularly arranged packing structures can generally process higher quantities of material per unity vo ⁇ lume of column with smaller pressure loss per theoretical stage than other packing bodies or trays can. Owing to such prop ⁇ erties orderly arranged packing structures are especially appropriate for use under vacuum.
  • the liquid is flowing down along the mantl surfaces of the packing bodies, while the gas phase flows u through the space between the bodies which space defines fre cross sections of flow.
  • This free cross section can vary fro layer to layer and it varies sometimes even within a layer a well.
  • the i ⁇ terfacial area is constituted primarily by th wetted surface of the bodies. A portion of the flow energy ⁇ the gas phase gets lost as a friction loss on the surface o the bodies and other parts of this energy get lost mainly du to shape resistance and to swirling losses in the zig-zag chan nels between the bodies having varying cross sections.
  • Ordere packing structures consist of sheets or ribbons arrange regularly in a side by side relationship.
  • Ordered packing structures comprise passage channels whic can be considered to represent the elementary units thereof.
  • the passage channels are open both at their upper and lowe ends.
  • the liquid phase enters th passage channels from above, while the gas enters from below.
  • the liquid flows down on the surface of the sheets defining the sides of the passage channels, while the gas flows up in the space defined between the channel walls.
  • the passage channels can also be open at portions of their sides.
  • An ordered assemb ⁇ ly of the passage channels forms generally a packing unit.
  • an ordered packing comprises a number of packing units placed above each other (in which adjacent units can be angular ⁇ ly displaced relative to each other).
  • the side walls of different kinds of ordered packing units are made generally by arranging appropriate corrugated sheets beside each other that can be made by folding, pressing or by other ways from continuous or apertured sheets.
  • the liquid enters the passage channels in the form of droplets or of jet streams, then abuts the slanted walls of the channels and gets spread thereon and flows down in directions which are divergent within every pair of the passage channels.
  • the gas (vapor) enters the passage channels from below and during its oblique upstream the flow of a channel meets through the open side of the channel with the oppositely inclined stream of the neigbouri ⁇ g channel that crosses the first chan ⁇ nel, and at the meeting zones swirling occurs due to mutual friction of the streams.
  • the oblique arrangement of the passage channels facilitate the mixing of the gas and liquid phases in radial direction, but the increased flow resistance due to zig-zag flow is connected with significant pressure losses.
  • the swirl-formation and the increased flow resistance re sult in excess pressure losses that cannot create excessive i ⁇ terfacial area.
  • the object of the invention is to eliminate the above sum- marized drawbacks of ordered packing structures and more parti ⁇ cularly to provide such a geometric design for the sheets and their mutual connections that define passage channels with re ⁇ cuted flow resistance and decreased tendency to vortex forma ⁇ tion and in which the liquid phase cannot flow through without being effectively spread and which can properly mix the paral ⁇ lel flows by alternatively uniting and separating them, whereby material transfer can take place in a simple way requiring a re claimed volume of columm ⁇ and a decreased amount of energy.
  • a packing structure has been provided especially for use in a column mainly for contacting liquid and gas phases, which packing structure comprises sheets which are periodically folded and attached to each other, the sheets define regular and periodical passage channels and the channels are opening to respective parallel planes defined by the two sides ⁇ f the sheets, and the improvement according to the invention lies in that each of the sheets is composed of periodically repetitive elements and each line of intersection of such elements with said planes has a shape similar to the letter "M” or "W" which is symmetrical and has uneven arms form ⁇ ed by straight or slightly curved line sections, and the inter ⁇ section line of an element with one of said planes defined by a first side of the sheet is geometrically congruent with the intersection line of this element with the other one of said planes defined by a second side of the sheet and these two in ⁇ tersection lines are laterally offset by a half period rela ⁇ tive to each other, and adjacent ones of the sheets are attach ⁇ ed to each other in such a way that an apex defined by a pair
  • the form of the passage channels defined by sheets made and attached to each other as described hereinabove varies with a continuous transitL ⁇ between the in- and outflowing planes, whereas the free cross section of flow remains unchanged at each height.
  • the continuous changing of the form of the pas ⁇ sage channels ensures a low flow resistance and provides an op ⁇ timum flow deflection.
  • the passage channels are open towards the neighbouring pas ⁇ sage channels at their sides in such a way that the opening is continuously decreases at one side and increases in the other side along the length (height), the resulting combined cross section ⁇ f any two neighbouring channel remain, however, un- changed at every height.
  • the joining and separation of the streams flowing in a common direction in neighbouring channels occurs with minimum swirling due to the continuously varying 87/05827 n ⁇ _
  • the passage channels have closed incoming and outgoi openings defined by the edges of slanted plates that preve simple throughflow of downwardly streaming liquid in drops o jets without being properly spread.
  • FIG. 1 shows a portion of a sheet forming the packing stru ture according to the invention
  • FIG. 2 shows the top view of the upper and lower sides of periodic formation of a sheet
  • FIG. 3 shows the perspective view of a larger portion o the packing structure according to the invention
  • FIG. shows the perspective view of an elementary unit o the periodic sheet structure
  • FIG. 5 shows schematically the flow of the upstreami ⁇ g ga between two sheets
  • FIG. 6 shows the perspective view of a fraction of a pack ing unit partly in fraction
  • FIG. 7 is a view similar to FIG. 6 without fraction
  • FIG. 8 shows an other packing unit with sheets being turne by 90° relative to the sheets of FIG. 7.
  • FIG.l shows the perspective view ⁇ f a portion of one of the sheets forming the packing according to the invention.
  • the sheet can be made from a thin planar sheet by means of folding or pressing.
  • the starting planar sheet itself can be slotted, grooved, apertured or woven preferable of metal or plastic wires.
  • Lower side 1 of the sheet is formed by the repetitive plurality of formations composed of sections 2,3,4 and 5 similar to the letter "W" which fall in a common plane. In norm al use this plane is preferably horizontal.
  • Upper side 10 of the sheet is formed by the repetitive plurality of upper for ⁇ mations composed of sections 6,7,8 and 9 which upper f ⁇ rma- tio ⁇ s are congruent to lower formations but they are laterally offset by a half period compared thereto.
  • the upper formations also fall in a common plane which is parallel to the lower one.
  • FIG. 2 shows the top view of a period of respective forma ⁇ tions of the lower and upper sides 1 and 10 projected together.
  • the dotted lines indicate the folded edges of the sheet. For the case of clarity in FIG. 2 the mutual coverage of the sheet sections was not illustrated. It can be seen in FIG.
  • the upright standing property is not always indispensable because alter ⁇ native figures can be obtained if e.g. the lower side 1 is fix ⁇ ed and the upper side 10 is virtually moved laterally in its plane, whereby similar but oblique sheet figures are obtained.
  • FIG. 3 shows the perspective view of a portion of a packin according to the invention, which can be obtained by attachin a few number e.g. a pair of sheets 11,12 (such as shown in FIG. 1) together as shown.
  • the attached sheets define passag channels therebetween which are almost . vertical and hav oblique walls. If the combined cross-section of all passag channels between the two sheets 11 and 12 is considered, on might draw the conclusion that this resulting cross-section i the same at every height.
  • FIG. 4 shows an elementary unit of the periodically repetitive structure of FIG. 3.
  • the unit is composed of plates 13 and 14 of sheet 11 and plates 15 and 16 of sheet 12.
  • the apices of the plates 13 and 14 have also been indicated in FIG. 4.
  • the cross-section of the elementary passage channel is shown by hatched area 17.
  • the plate 15 moves away from the plane of the plate 14, and the rear plate 16 approaches towards the plate 13.
  • the plate 16 abuts the plate 13, while the spacing between the plates 14 and 15 is at maximum.
  • the respective cross-sections are indicated by hatched areas 18,19,20 and 21.
  • FIG. 5 is a flow-chart for the upstreaming gas.
  • the passage channels formed bet ⁇ ween adjacent sheets ⁇ f the packing according to the invention are continuously transformed into ⁇ e-a ⁇ other, and owing to the uniform total cross-section at every height, as well as to the slight extent of changes in the streaming direction, the flow resistance will be very small and ram effects and unwanted vor ⁇ tex building will be much less compared to conventional de- signs.
  • the constructional design provides for the uniform late ⁇ ral distribution of the liquid phase that flows down on the walls of the sheet in the form of a thin fluid film.
  • FIG. 6 shows a unit of the packing according to the invention which comprises sheets designed and attached to each other as described hereinabove and their mutual position is fixed by means of retainer rings 27.
  • the retainer ring 27 has a conventional design and enables the proper positioning of the packing units in the column.
  • FIGs. 7 and 8 show packing units 28 and 29, respectively, designed as the one shown in FIG. 6. It can be seen that the sheets of the packing unit 28 extend horizontally in direction X of FIG. 7 and the sheets of the packing unit 29 therebelow extend normal thereto as indicated by arrow Y. If in a column packing units are arranged vertically on one another which have respective periodical passage channel systems that extend nor ⁇ mal to each other, then the lateral distribution of both phases will thereby favorably be influenced, since the first unit dis ⁇ tributes both streaming phases in the direction X and the other unit does the same in the direction Y.
  • a column can be packed with several packing units, and a favorable distribution is ob ⁇ tained if the units are arranged in pairs with mutually perpen ⁇ dicular direction of sheets. It should be noted, however, that this normal arrangement of the units cannot form an indispens ⁇ able condition, therefore units with parallel sheets or sheets that close angles other than 90° can also be used.
  • the favorable streaming and transition properties and low flow resistance of the packing according to the invention is illustrated by the data of Table 1.
  • the data has been obtained by testing the operational parameters of the packing according to the invention in a test sytem of 4% NaOH as liquid phase and 1% CO2 as a gas phase at carbonate conversion of 25%.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

La structure de garniture ci-décrite est destinée à être utilisée en particulier dans une colonne servant notamment à la mise en contact des phases liquide et gazeuse. Ladite garniture est du type à éléments disposés en ordre symétrique et comprend des unités de garniture constituées de feuilles fixées les unes aux autres. Chaque feuille est composée de pans de plaques pliées (13, 14) périodiquement identiques et la configuration des pans peut être définie par la forme de la ligne d'intersection supérieure et inférieure (profil) des plaques avec les plans supérieurs et inférieurs définis par les faces correspondantes (1, 10) des feuilles. L'agencement ainsi créé présente une forme symétrique en ''W'', dont les branches sont séparées par des bras (3, 2 ou 4, 5) de longueur inégale. La ligne d'intersection d'un pan avec le premier de ces plans coïncide avec l'intersection du même pan avec l'autre plan, mais ces lignes d'intersection sont latéralement décalées l'une par rapport à l'autre d'une demi-période. Les feuilles adjacentes faisant partie de ladite unité de garniture sont fixées l'une à l'autre, de telle sorte qu'un apex (C) défini par une paire de bras courts (3, 4) d'une feuille touche un apex défini par les bras plus longs de la feuille adjacente et les feuilles adjacentes se touchent l'une l'autre alternativement et périodiquement par l'une ou l'autre de leurs faces. Les feuilles ainsi fixées définissent des canaux de passage périodiques communiquant latéralement les uns avec les autres, chaque canal présentant une section transversale variant continuellement dans le sens de la hauteur, cependant que chaque paire de canaux présente une section transversale combinée uniforme en chaque point de la hauteur.
EP87906148A 1986-03-24 1987-03-24 Structure de jointoyage en particulier pour usage dans une colonne de contact essentiellement pour phases liquides et gazeuses Withdrawn EP0308430A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU121986 1986-03-24
HU861219A HU197220B (en) 1986-03-24 1986-03-24 Charge structure particularly in columns chiefly for contacting liquid and gas phases

Publications (1)

Publication Number Publication Date
EP0308430A1 true EP0308430A1 (fr) 1989-03-29

Family

ID=10953401

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87906148A Withdrawn EP0308430A1 (fr) 1986-03-24 1987-03-24 Structure de jointoyage en particulier pour usage dans une colonne de contact essentiellement pour phases liquides et gazeuses

Country Status (4)

Country Link
US (1) US4915878A (fr)
EP (1) EP0308430A1 (fr)
HU (1) HU197220B (fr)
WO (1) WO1987005827A1 (fr)

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US5227054A (en) * 1990-05-10 1993-07-13 Imre Gyulavari Filling body biological units and cooling towers
ES2137977T3 (es) * 1993-03-10 2000-01-01 Sulzer Chemtech Ag Relleno ordenado de columna.
JPH0824670A (ja) * 1994-07-11 1996-01-30 Usui Internatl Ind Co Ltd 排気ガス浄化用メタルハニカム体
EP0764462B1 (fr) * 1995-08-24 2000-03-01 Raschig GmbH Elément de garnissage, en particulier pour colonnes ou tours d'échange de matière et/ou de chaleur
CN1112963C (zh) * 1995-09-14 2003-07-02 蓝泰克产品有限公司 折叠填料
GB9610776D0 (en) * 1996-05-22 1996-07-31 Univ Aston Structured packings
EP1016457B1 (fr) 1998-12-28 2003-05-07 Nippon Sanso Corporation Dispositif de contact vapeur-liquide, unité de separation d'air cryogénique et procédé de séparation des gaz
TW443941B (en) * 1999-02-12 2001-07-01 Sulzer Chemtech Ag Filler body with a cross channel structure
US6314756B1 (en) 2000-09-07 2001-11-13 Praxair Technology, Inc. Structured packing with asymmetric crimp pattern
US6378332B1 (en) 2000-09-07 2002-04-30 Praxair Technology, Inc. Packing with low contacting crimp pattern
TWI351306B (en) * 2003-05-16 2011-11-01 Sulzer Chemtech Ag Method of mass transfer of a material or heat
EP2117672B1 (fr) 2007-02-02 2013-01-23 Donaldson Company, Inc. Ensemble de supports de filtration d'air
CN102438723B (zh) 2007-06-26 2015-12-16 唐纳森公司 过滤介质包，过滤元件和方法
EP2323748B1 (fr) 2008-07-25 2016-11-23 Donaldson Company, Inc. Ensemble de média de filtration plissé comprennant des canneaux
MX2012008542A (es) 2010-01-25 2012-11-12 Donaldson Co Inc Medios de filtracion plisados con estrias conicas.

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Also Published As

Publication number Publication date
HUT42964A (en) 1987-09-28
US4915878A (en) 1990-04-10
HU197220B (en) 1989-03-28
WO1987005827A1 (fr) 1987-10-08

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