EP0181906A1 - Packing elements - Google Patents

Packing elements

Info

Publication number
EP0181906A1
EP0181906A1 EP85902586A EP85902586A EP0181906A1 EP 0181906 A1 EP0181906 A1 EP 0181906A1 EP 85902586 A EP85902586 A EP 85902586A EP 85902586 A EP85902586 A EP 85902586A EP 0181906 A1 EP0181906 A1 EP 0181906A1
Authority
EP
European Patent Office
Prior art keywords
perforations
tubular member
packing element
elements
tubular
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Withdrawn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
EP85902586A
Other languages
German (de)
French (fr)
Inventor
Kevin Joseph Mckeown
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.)
Mass Transfer International Ltd
Mass Transfer Ltd
Original Assignee
Mass Transfer International Ltd
Mass Transfer Ltd
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 Mass Transfer International Ltd, Mass Transfer Ltd filed Critical Mass Transfer International Ltd
Publication of EP0181906A1 publication Critical patent/EP0181906A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • 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
    • 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
    • B01J2219/30—Details relating to random packing elements
    • B01J2219/302—Basic shape of the elements
    • B01J2219/30223—Cylinder
    • 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
    • B01J2219/30—Details relating to random packing elements
    • B01J2219/304—Composition or microstructure of the elements
    • B01J2219/30408—Metal
    • 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
    • B01J2219/30—Details relating to random packing elements
    • B01J2219/304—Composition or microstructure of the elements
    • B01J2219/30466—Plastics

Definitions

  • This invention is concerned with improvements in and relating to packing elements for use in fluid-fluid contact apparatus.
  • a wide variety of packing elements has been proposed for use in fluid-fluid contact apparatus. Examples of these include Raschig rings. Pall rings, Tellerette rings and Mini-rings. Such elements are used, for example, in apparatus such as distillation columns, reaction towers, gas scrubbing apparatus and the like.
  • the present invention provides a packing element comprising an open-ended tubular member having a row of perforations extending around the member adjacent each end of the member.
  • the perforations are relatively small and in this regard differ markedly from the apertures commonly found in packing rings.
  • the perforations may be of any desired cross-section, polygonal or curvilinear, but are typically and conveniently circular in cross-section.
  • the diameter of the perforations will, to some extent, depend upon the size of the element, larger elements having larger perforations and smaller elements having smaller perforations.
  • the dimensions of the perforations may be expressed as a percentage of the length of the tubular member; for example they may be from 1 to 5%, of the overall length of the tubular member.
  • the perforations are suitably from 1 to 5 mm in diameter, preferably from 2 to 4 mm in diameter.
  • the spacing between centres of the perforations in the rows will also depend upon the size of the packing element and thus may be expressed in terms of the diameters of the perforations, in which case the spacing is suitably from 2 to 5 diameters.
  • the rows of perforations may be single rows or may comprise two or more rows, in which case perforations in adjacent rows may be staggered.
  • the end rows of perforations are suitably, in terms of perforation diameters are suitably from 1 to 5 diameters from the ends.
  • the tubular member forming the body of the packing element may be of any desired cross-section, polygonal or curvilinear, but is generally circular in cross-section, that is the tubular member takes the form of a hollow cyclinder.
  • the tubular member takes the form of a hollow cyclinder.
  • the ratio of the diameter of the tubular member to its height or length may be unity, as in the case of conventional raschig or Pall rings. However it is generally preferred that the ratio of diameter to height be greater than unity, suitably at least from 1.5 :1 and preferably from 2:1 to 10:1, more preferably 2.5:1 to 5:1.
  • the tubular element is preferably provided with an outwardly directed flange at each end since this serves not only to strength the ring but to improve its effectiveness, particularly in combination with the rows of perforations.
  • Such flanges may extend generally normal to the surface of the tubular member or may be angled with respect to that plane so that the rim of the flange extends beyond the end of the tubular member both radially and longitudinally.
  • the tubular members are suitably provided with ribs or tabs extending inwardly from the walls of the member.
  • ribs or tabs which also serve to increase the available surface area of the elements, may meet (and indeed may be joined) at or about the centre of the tubular member or may extend only part-way into the member.
  • the walls of the tubular member may be provided with apertures in a conventional manner and located between the rows of perforations. Such apertures will generally be of greater cross-sectional area than the perforations forming the rows and may, for example in the case of metal rings, be associated with inwardly directed tabs.
  • the packing elements of the invention may be formed of any suitable material, commonly metal or plastics material. Suitable metals include mild steel, stainless steel and aluminium and its alloys. Suitable plastics materials include polypropylene and nylon.
  • the packing elements of the invention may be employed in a wide variety of fluid-fluid contact apparatus, such as distillation or fractionation columns or gas scrubbing apparatus.
  • the elements will, as is generally the practice, be supported upon liquid-pervious supports and may be stacked in an ordered array.
  • the elements of the invention are particularly suitable for dumpiag into the apparatus and thus will generally be used in a so-called "dumped" array.
  • Figure 1 is a side view of a packing element in accordance with the invention.
  • FIG 2 is a plan view of the elements shown in Figure 1.
  • a packing element in accordance with the invention comprises a tubular member 1 provided with flanges 2 at its ends and rows of perforation 3 adjacent each end.
  • Tubular member 1 is further provided with apertures 4 from which spring inwardly directed tabs 5.
  • Agent LAMB, John, Baxter; Marks & Clerk, 57/60 Lincoln's Inn Fields, London WC2A 3LS (GB).
  • a packing element comprises an open-ended tubular member (1) having a row of perforations (3) adjacent each e of the member.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Packaging Of Machine Parts And Wound Products (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

Un élément de garniture comprend un organe tubulaire à extrémités ouvertes (1) possédant une rangée de perforations (3) à proximité de chaque extrémité de l'organe.A packing member comprises a tubular member with open ends (1) having a row of perforations (3) near each end of the member.

Description

Packing Elements
This invention is concerned with improvements in and relating to packing elements for use in fluid-fluid contact apparatus.
A wide variety of packing elements has been proposed for use in fluid-fluid contact apparatus. Examples of these include Raschig rings. Pall rings, Tellerette rings and Mini-rings. Such elements are used, for example, in apparatus such as distillation columns, reaction towers, gas scrubbing apparatus and the like.
Many such elements take the form of or are based on a simple hollow tubular element which may be provided with inwardly directed ribs or tabs, apertures in the side walls, and/or flanges at their ends.
It has now been found, in accordance with the present invention, that the overall effectiveness of such ring-based elements may be improved by providing them with a row of relatively small perforations adjacent each end of the ring. Accordingly, the present invention provides a packing element comprising an open-ended tubular member having a row of perforations extending around the member adjacent each end of the member.
As noted above, the perforations are relatively small and in this regard differ markedly from the apertures commonly found in packing rings.
The perforations may be of any desired cross-section, polygonal or curvilinear, but are typically and conveniently circular in cross-section. The diameter of the perforations will, to some extent, depend upon the size of the element, larger elements having larger perforations and smaller elements having smaller perforations. Thus, for example, the dimensions of the perforations may be expressed as a percentage of the length of the tubular member; for example they may be from 1 to 5%, of the overall length of the tubular member. In absolute terms the perforations are suitably from 1 to 5 mm in diameter, preferably from 2 to 4 mm in diameter.
The spacing between centres of the perforations in the rows will also depend upon the size of the packing element and thus may be expressed in terms of the diameters of the perforations, in which case the spacing is suitably from 2 to 5 diameters.
The rows of perforations may be single rows or may comprise two or more rows, in which case perforations in adjacent rows may be staggered.
The end rows of perforations are suitably, in terms of perforation diameters are suitably from 1 to 5 diameters from the ends.
The tubular member forming the body of the packing element may be of any desired cross-section, polygonal or curvilinear, but is generally circular in cross-section, that is the tubular member takes the form of a hollow cyclinder. For convenience, in the following description reference will be made only to such cylindrical tubular members.
The ratio of the diameter of the tubular member to its height or length may be unity, as in the case of conventional raschig or Pall rings. However it is generally preferred that the ratio of diameter to height be greater than unity, suitably at least from 1.5 :1 and preferably from 2:1 to 10:1, more preferably 2.5:1 to 5:1. The tubular element is preferably provided with an outwardly directed flange at each end since this serves not only to strength the ring but to improve its effectiveness, particularly in combination with the rows of perforations. Such flanges may extend generally normal to the surface of the tubular member or may be angled with respect to that plane so that the rim of the flange extends beyond the end of the tubular member both radially and longitudinally.
In order to inhibit possible nesting or interlocking of the elements, the tubular members are suitably provided with ribs or tabs extending inwardly from the walls of the member. Such ribs or tabs, which also serve to increase the available surface area of the elements, may meet (and indeed may be joined) at or about the centre of the tubular member or may extend only part-way into the member.
The walls of the tubular member may be provided with apertures in a conventional manner and located between the rows of perforations. Such apertures will generally be of greater cross-sectional area than the perforations forming the rows and may, for example in the case of metal rings, be associated with inwardly directed tabs. The packing elements of the invention may be formed of any suitable material, commonly metal or plastics material. Suitable metals include mild steel, stainless steel and aluminium and its alloys. Suitable plastics materials include polypropylene and nylon.
The packing elements of the invention may be employed in a wide variety of fluid-fluid contact apparatus, such as distillation or fractionation columns or gas scrubbing apparatus. The elements will, as is generally the practice, be supported upon liquid-pervious supports and may be stacked in an ordered array. However, the elements of the invention are particularly suitable for dumpiag into the apparatus and thus will generally be used in a so-called "dumped" array.
In order that the invention may be well understood reference will be made to the accompanying drawings in which:
Figure 1 is a side view of a packing element in accordance with the invention; and
Figure 2 is a plan view of the elements shown in Figure 1. As shown in the drawings a packing element in accordance with the invention comprises a tubular member 1 provided with flanges 2 at its ends and rows of perforation 3 adjacent each end. Tubular member 1 is further provided with apertures 4 from which spring inwardly directed tabs 5.
Internat ona ureau
INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT)
(51) International Patent Classification 4 : (11) International Publication Number: WO 85/ 05
A3 B01D 53/20 (43) International Publication Date: 5 December 1985 (05.1
(21) International Application Number: PCT/GB85/00214 (81) Designated States: AT (European patent), AU, BE ropean patent), BR, CH (European patent), DE
(22) International Filing Date: 21 May 1985 (21.05.85) ropean patent), FR (European patent), GB (E pean patent), IT (European patent), JP, KR, LU ropean patent), NL (European patent), SE (Euro
(31) Priority Application Number: 8412927 patent), US.
(32) Priority Date: 21 May 1984 (21.05.84)
Published
(33) Priority Country: GB With international search report.
Before the expiration ofthe time limit for amendin
(71) Applicant (for all designated States except US): MASS claims and to be republished in the event ofthe re
TRANSFER LIMITED [GB/GB]; P.O. Box 5, Miln- of amendments. thorpe, Cumbria OA7 7HB (GB).
(72) Inventor; and (88) Date of publication of the international search rep
(75) Inventor/Applicant (for US only) : McKEOWN, Kevin, 16 January 1986 (16.01. Joseph [GB/GB]; Garden Hill, Storrs Park, Winder- mere, Cumbria LA23 3LF (GB).
(74) Agent: LAMB, John, Baxter; Marks & Clerk, 57/60 Lincoln's Inn Fields, London WC2A 3LS (GB).
(54) Title: PACKING ELEMENTS
(57) Abstract
A packing element comprises an open-ended tubular member (1) having a row of perforations (3) adjacent each e of the member.
FOR THE PURPOSES OF INFORMAΗON ONLY
Codes used to identify States party to the PCT on the frontpages ofpamphlets publisbinginternational applications under the PCT.
AT Austria GA Gabon MR Mauritania
AU Australia GB United Kingdom MW Malawi
BB Barbados HU Hungary NL Netherlands
BE Belgium rr Italy NO Norway
BG Bulgaria JP Japan RO Romania
BR Brazil KP Democratic People's Republic SD Sudan
CF Central Afiican Republic of Korea SE Sweden
CG Congo KR Republic of Korea SN Senegal
CH Switzerland LI Liechtenstein su Soviet Union
CM Cameroon LK Sri Lanka TD Chad
DE Germany, Federal Republic of LU Luxembourg TG Togo
DK Denmark: MC Monaco US United States of America
FI Finland MG Madagascar
FR France ML Mali

Claims

CLAIMS:-
1. A packing element comprising an open-ended tubular member (1) characterized in that the tubular has a row of perforations (3) extending around the member adjacent each end of the member.
2. A packing element as claimed in claimed in claim 1 characterized in that the perforations have a diameter of from 1 to 5% of the overall length of the tubular member.
3. A packing element as claimed in claim 1 or claim 2 characterized in that the spacing between the centres of the perforations in a row is from 2 to 5 perforation diameters.
4. A packing element as claimed in any one of the preceding claims characterized in that the tubular element has a ratio of diameter to height of at least 1.5:1.
5. A packing element as claimed in any one of the preceding claims characterized in that the tubular member flanges (2) at each end.
6. A packing element as claimed in any one of the preceding claims characterized in that it has ribs or tabs (5) extending inwardly from the wall of the tubular member.
EP85902586A 1984-05-21 1985-05-21 Packing elements Withdrawn EP0181906A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB848412927A GB8412927D0 (en) 1984-05-21 1984-05-21 Packing elements
GB8412927 1984-05-21

Publications (1)

Publication Number Publication Date
EP0181906A1 true EP0181906A1 (en) 1986-05-28

Family

ID=10561273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85902586A Withdrawn EP0181906A1 (en) 1984-05-21 1985-05-21 Packing elements

Country Status (7)

Country Link
EP (1) EP0181906A1 (en)
JP (1) JPS61502173A (en)
KR (1) KR860700093A (en)
AU (1) AU4350285A (en)
BR (1) BR8506748A (en)
GB (1) GB8412927D0 (en)
WO (1) WO1985005287A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5130062A (en) * 1988-08-11 1992-07-14 Sulzer Brothers Limited Packing for a material and heat exchange column
BR8804209A (en) * 1988-08-11 1988-11-29 Helmut Riemer DISORDERED FILLING
GB2273062B (en) * 1992-11-03 1997-02-05 Eta Process Plant Ltd Packing elements
US5885489A (en) * 1992-11-03 1999-03-23 Eta Process Plant Limited Packing elements
US5304328A (en) * 1993-01-22 1994-04-19 Norton Chemical Process Products Corporation Packing element
US5314645A (en) * 1993-01-22 1994-05-24 Norton Chemical Process Products Corp. Packing element
GB2299076A (en) * 1995-03-09 1996-09-25 Mass Transfer International Lt Packing elements
ES1109280Y (en) * 2014-04-29 2014-08-05 Biolog Y Filtracion S L BIOMASS CARRIER ELEMENT FOR BIOLOGICAL TREATMENT SYSTEMS.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE853159C (en) * 1944-07-21 1952-10-23 Basf Ag Filler
BE652833A (en) * 1963-09-16
US4333893A (en) * 1980-01-23 1982-06-08 Clyde Robert A High area contactor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8505287A2 *

Also Published As

Publication number Publication date
GB8412927D0 (en) 1984-06-27
AU4350285A (en) 1985-12-13
KR860700093A (en) 1986-03-31
WO1985005287A3 (en) 1986-01-16
JPS61502173A (en) 1986-10-02
WO1985005287A2 (en) 1985-12-05
BR8506748A (en) 1986-09-23

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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18D Application deemed to be withdrawn

Effective date: 19871223

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MCKEOWN, KEVIN, JOSEPH