EP0578396A1 - Füllen von Behältnissen - Google Patents

Füllen von Behältnissen Download PDF

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Publication number
EP0578396A1
EP0578396A1 EP93304802A EP93304802A EP0578396A1 EP 0578396 A1 EP0578396 A1 EP 0578396A1 EP 93304802 A EP93304802 A EP 93304802A EP 93304802 A EP93304802 A EP 93304802A EP 0578396 A1 EP0578396 A1 EP 0578396A1
Authority
EP
European Patent Office
Prior art keywords
gas
particulate material
filling valve
container
filling
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Withdrawn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
EP93304802A
Other languages
English (en)
French (fr)
Inventor
Wasyl Michael Sajik
Evelyn Arthur Shervington
Neil Alexander Downie
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.)
BOC Group Ltd
Original Assignee
BOC Group 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 BOC Group Ltd filed Critical BOC Group Ltd
Publication of EP0578396A1 publication Critical patent/EP0578396A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B31/00—Packaging articles or materials under special atmospheric or gaseous conditions; Adding propellants to aerosol containers
    • B65B31/04—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied
    • B65B31/046—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles co-operating, or being combined, with a device for opening or closing the container or wrapper
    • B65B31/047—Evacuating, pressurising or gasifying filled containers or wrappers by means of nozzles through which air or other gas, e.g. an inert gas, is withdrawn or supplied the nozzles co-operating, or being combined, with a device for opening or closing the container or wrapper the nozzles co-operating with a check valve in the opening of the container or wrapper

Definitions

  • the present invention relates to methods of and apparatus for the filling of containers with a mixture of particulate material and gas under pressure.
  • Pressure pack dispensers that is, aerosol containers are used to dispense many different substances.
  • European Patent Publication No. 0385773 there is described a system for storing and dispensing gases in a container in which a polymeric material having microvoids is utilised, the microvoids functioning as interstitial stores for the gas.
  • a method of filling a container with particulate material and gas comprising the steps of:
  • an apparatus for filling a container with particulate material and a gas comprising a vessel containing the particulate material in fluid communication with a filling valve, means for fluidising the particulate material within the vessel, a pump for delivering gas under pressure to the filling valve, and means for opening the filling valve to permit the passage therethrough simultaneously of the fluidised particulate material and the gas to fill a container when aligned with the filling valve.
  • the apparatus 1 comprises a cylinder 9 of a gas, for example, carbon dioxide under pressure.
  • the outlet of the cylinder 9 is connected to a pipework circuit including a pipeline 14 along which is located a pressure regulator 2.
  • the line 14 has a branch 16 which communicates with the upper (as shown) end of a vessel 3 containing particulate material 8, for example, a powdered polymer.
  • a circulating pump 4 Located in the line 14 downstream of the branch 16 is a circulating pump 4. From the pump 4 the line 14 continues towards a filling valve 5.
  • a second branch 11 from the line 14 communicates with the interior of the vessel 3. It will be apparent that the bottom (as shown) end of the vessel 3 also communicates with the filling valve 5.
  • a pipeline 18 extends from the line 14 at a location upstream of the pressure regulator 2 and communicates with the filling valve 5.
  • An auxiliary valve 12 is located in the line 18.
  • a filter or cyclone particle separator 10 or a combination of filter and cyclone particle separator is located in the vessel 3 adjacent the upper (as shown) end.
  • Containers 6 to be filled with the gas and particulate material are moved intermittently in a manner known per se by means of a conveyor 7 so that successive containers 6 are aligned with the filler valve 5.
  • the auxiliary valve 12 is first closed and the cylinder 9 opened such that gas flows along line 14 and through the pressure regulator 2. Some of the gas then enters the vessel 3 where it fluidises the particulate material 8 contained therein. The remainder of the gas is pumped by means of pump 4 towards the filling valve 5. Thus at the filling valve 5 there is fluidised particulate material 8 from the vessel 3 and gas.
  • the filling valve 5 If the filling valve 5 is closed, then the gas passes up the second branch 11 and into the vessel 3, where the flow is calculated to provide a fluidising effect, together with some flow down the branch 11. If, however, the filling valve 5 is open, then gas and particulate material will flow out, and fill the container 6 on the conveyor 7 aligned therewith with a mixture of particulate material and gas.
  • the filter or cyclone particle separator 10 or combination of filter and cyclone is deployed to ensure that particles do not enter and clog the pump 4 or the line to and from the pump.
  • the flow of gas through the vessel 3 is selected by means of pressure regulator 2 so that the particulate material 8 is maintained in the liquid-like 'fluidised' state at least at the bottom of the vessel 3, but possibly in the whole of the vessel.
  • the flow may be calculated by the Rowe formula, which assumes drag factor for small particles in a bed of a constant times the isolated particle drag (see P N Rowe, Part II Trans. Inst. Chem. Engrs., London Volume 39, 175, 1961).
  • the circulating gas flow must be carefully regulated, so that severe bubbling of the fluidised bed does not occur. According to the two-phase theory, all excess flow through a fluidised bed goes into bubbling.
  • the preferred gas is carbon dioxide, at a high pressure (greater than 10 bar). This is because there is evidence that C02 forms a better fluidised bed than other gases such as nitrogen (see L S Leung, Ph.D., University of Cambridge, England, 1961). Also, a mixture of carbon dioxide, a powdered polymer, and acetone is the basis of the pressurised container (aerosol) propellant system described in European Patent Publication No. 0385773.
  • the containers 6 are prefilled or subsequently filled with metered amounts of acetone, and the powdered polymer and gas are added at a pressure chosen so that after adsorption of the acetone by the polymer and gas by the acetone, the container pressure settles to a required lower pressure.
  • the pressure at the bottom of the vessel 3 will be greater than that at the top by an amount given by multiplying the powder density by the acceleration due to gravity and the height difference between filling nozzle and the powder level in the vessel 3 and multiplying by (0.524), approximately.
  • the auxiliary valve 12 is provided which opens momentarily at the end of filling a container 6. This gives a pulse of extra pressure gas at the filling valve 5, which clears powder out of the valve and terminates powder fill by initiating a large bubble of gas in the powder/gas fluid. There will also be an extra flow of gas into the container 6, which will raise its pressure somewhat above that of the valve static pressure and needs to be allowed for.
  • the filling time was approximately 0.1 seconds resulting in a container pressure of approximately 10 bar.
  • the vessel 3 and the filling valve 5 are arranged above the container 6 to be filled, it is possible that they be arranged below the container 6 and filling is effected by the gas flow, that is by a "gas lift" effect.
  • the above described embodiment allows for the filling of container 6 at relatively higher speeds, in the order of 100's of containers per minute.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Basic Packing Technique (AREA)
EP93304802A 1992-06-25 1993-06-18 Füllen von Behältnissen Withdrawn EP0578396A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB929213558A GB9213558D0 (en) 1992-06-25 1992-06-25 Filling containers
GB9213558 1992-06-25

Publications (1)

Publication Number Publication Date
EP0578396A1 true EP0578396A1 (de) 1994-01-12

Family

ID=10717756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93304802A Withdrawn EP0578396A1 (de) 1992-06-25 1993-06-18 Füllen von Behältnissen

Country Status (5)

Country Link
EP (1) EP0578396A1 (de)
AU (1) AU4000793A (de)
GB (1) GB9213558D0 (de)
PL (1) PL299447A1 (de)
ZA (1) ZA934200B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2444365A1 (de) * 2010-10-20 2012-04-25 Carlsberg Breweries A/S Abfüllverfahren einer Druckerzeugungsvorrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0065624A1 (de) * 1981-05-22 1982-12-01 Degussa Aktiengesellschaft Verfahren zum Befüllen von Silofahrzeugbehältern
DD246747A1 (de) * 1986-03-20 1987-06-17 Bitterfeld Chemie Verfahren zur co tief 2 - fuellung von aerosolpackungen
DE3625034A1 (de) * 1985-12-30 1987-07-02 Cozzoli Machine Vorrichtung zum automatischen abfuellen eines fliessfaehigen produktes in aufnahmebehaelter
DE3805531A1 (de) * 1988-02-23 1989-08-31 Intec Maschinenbau Gmbh Verfahren zum foerdern von pulver und vorrichtung zur durchfuehrung dieses verfahrens
US4863316A (en) * 1987-07-01 1989-09-05 The Perkin-Elmer Corporation Closed loop powder flow regulator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0065624A1 (de) * 1981-05-22 1982-12-01 Degussa Aktiengesellschaft Verfahren zum Befüllen von Silofahrzeugbehältern
DE3625034A1 (de) * 1985-12-30 1987-07-02 Cozzoli Machine Vorrichtung zum automatischen abfuellen eines fliessfaehigen produktes in aufnahmebehaelter
DD246747A1 (de) * 1986-03-20 1987-06-17 Bitterfeld Chemie Verfahren zur co tief 2 - fuellung von aerosolpackungen
US4863316A (en) * 1987-07-01 1989-09-05 The Perkin-Elmer Corporation Closed loop powder flow regulator
DE3805531A1 (de) * 1988-02-23 1989-08-31 Intec Maschinenbau Gmbh Verfahren zum foerdern von pulver und vorrichtung zur durchfuehrung dieses verfahrens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2444365A1 (de) * 2010-10-20 2012-04-25 Carlsberg Breweries A/S Abfüllverfahren einer Druckerzeugungsvorrichtung

Also Published As

Publication number Publication date
PL299447A1 (en) 1993-12-27
ZA934200B (en) 1994-01-10
AU4000793A (en) 1994-01-06
GB9213558D0 (en) 1992-08-12

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