WO1998024542A1 - Procede de granulation en poudre - Google Patents

Procede de granulation en poudre Download PDF

Info

Publication number
WO1998024542A1
WO1998024542A1 PCT/GB1997/003262 GB9703262W WO9824542A1 WO 1998024542 A1 WO1998024542 A1 WO 1998024542A1 GB 9703262 W GB9703262 W GB 9703262W WO 9824542 A1 WO9824542 A1 WO 9824542A1
Authority
WO
WIPO (PCT)
Prior art keywords
powder
mixer
liquid oil
liquid
onto
Prior art date
Application number
PCT/GB1997/003262
Other languages
English (en)
Inventor
William Duffett
Original Assignee
Agglomeration Technology Limited
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 Agglomeration Technology Limited filed Critical Agglomeration Technology Limited
Priority to AU54012/98A priority Critical patent/AU5401298A/en
Publication of WO1998024542A1 publication Critical patent/WO1998024542A1/fr

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
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/10—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in stationary drums or troughs, provided with kneading or mixing appliances
    • 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
    • B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
    • B01J2/16—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain

Definitions

  • the present invention relates to a method of granulating powder.
  • a method of granulating powder comprising the steps of spraying liquid oil onto the powder to be granulated and fluidising the powder in a fluid bed while spraying a further liquid onto the powder.
  • a variety of powder products can be granulated using the method of the invention.
  • the granulated powders produced comprise even granules with excellent instant properties for products where previously this was not possible with known granulating methods.
  • Examples of such powders or products include proteins, hydrocolloids, starches, pectins, emulsifiers and any combination of these products.
  • the process can be carried out using either a low shear mixer/fluid bed combination or a fluid bed which can be batch or continuous.
  • the mixture of powder and liquid oil is mixed in a low shear mixer, the liquid oil with and/or without lecithin or other emulsifier being sprayed onto the powder in or entering the mixer.
  • a low shear mixer may be of any suitable type such as a drum type, tote blenders, to slow speed ribbon or paddle type.
  • a low shear mixer is typically any mixer that does not substantially physically damage the powder.
  • the specific type and speed of the mixer may be selected to suit the strength of the powder being used.
  • the fluidised bed may comprise a vessel having an air distribution grate at a lower end thereof.
  • One or more filters may be positioned at an upper end of the vessel to filter out entrained solids.
  • Nozzles for spraying atomised liquids, typically water, may be positioned in, on, or adjacent to, the vessel, for example in the sides of or top of the vessel . Air enters through the distribution plate to fluidise the powder and the exhaust air passes through the filter section to the outside of the operating area.
  • the invention further provides a granulated powder product produced by means of the method of the invention.
  • Fig. 1 is a schematic view showing use of a low shear mixer in the method of the invention.
  • Fig. 2 is a schematic view showing use of a fluidised bed agglomerator in the method of the invention.
  • guar gum is added as shown schematically by arrow A, in powder form to a low shear mixer 1 comprising an open top vessel 2 having mixing blades or paddles 4 located therein.
  • the blades are mounted on a driving shaft 6 which is rotated by motor means 8 so that the blades move slowly.
  • any suitable low shear mixer may be used, for example a ribbon or screw mixing means may be used instead of blades 4 and shaft 6.
  • liquid oil and lecithin is added typically while the blades are moving. This is illustrated by arrow B.
  • the powder is coated to slow down subsequent agglomeration by creating a water barrier to minimise the normally hygroscopic nature of the powder.
  • the resultant product is output via a suitable outlet 10 on the vessel Z, as shown by arrow C.
  • This pre-treated powder 12 is then added to a batch fluid bed as shown in Figure 2 and at a variety of temperatures between 0°C and 120°C further liquid, normally water, is sprayed, via nozzles 16 located in or on the vessel 14, onto the powder to create a granule. Further drying may be required to reduce this added moisture to an acceptable level .
  • further liquid normally water
  • the base of the vessel 14 comprises a mesh plate 18 and the vessel is connected to an air supply or fan 20 so that, in use, air passes up through the mesh plates, through the mixture and out through filters 22 located at the top of the vessel 14.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Glanulating (AREA)
  • Detergent Compositions (AREA)

Abstract

Procédé servant à granuler une poudre et consistant à pulvériser de l'huile liquide sur la poudre à granuler et à fluidifier la poudre dans un lit de liquide tout en pulvérisant un autre liquide sur la poudre.
PCT/GB1997/003262 1996-12-06 1997-12-05 Procede de granulation en poudre WO1998024542A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU54012/98A AU5401298A (en) 1996-12-06 1997-12-05 Method of granulating powder material

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9625412.3A GB9625412D0 (en) 1996-12-06 1996-12-06 Granulated instant powders
GB9625412.3 1996-12-06

Publications (1)

Publication Number Publication Date
WO1998024542A1 true WO1998024542A1 (fr) 1998-06-11

Family

ID=10804070

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1997/003262 WO1998024542A1 (fr) 1996-12-06 1997-12-05 Procede de granulation en poudre

Country Status (3)

Country Link
AU (1) AU5401298A (fr)
GB (1) GB9625412D0 (fr)
WO (1) WO1998024542A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2817261A1 (fr) * 2000-11-29 2002-05-31 Rhodia Chimie Sa Cogranules de proteines et de polysaccharides, leur procede d'obtention et leurs utilisations
US10808168B2 (en) 2017-01-19 2020-10-20 Halliburton Energy Services, Inc. Methods for controlling conductive aggregates

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61162132A (ja) * 1984-12-31 1986-07-22 Furointo Sangyo Kk 粒状食品の製造法
EP0264049A1 (fr) * 1986-10-17 1988-04-20 Bayer Ag Procédé pour obtenir des granules
WO1993023523A1 (fr) * 1992-05-21 1993-11-25 Henkel Kommanditgesellschaft Auf Aktien Procede de fabrication continue d'un detergent et/ou d'un nettoyant granulaire
WO1997022685A1 (fr) * 1995-12-20 1997-06-26 Unilever Plc Procede pour preparer un detergent granulaire

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61162132A (ja) * 1984-12-31 1986-07-22 Furointo Sangyo Kk 粒状食品の製造法
EP0264049A1 (fr) * 1986-10-17 1988-04-20 Bayer Ag Procédé pour obtenir des granules
WO1993023523A1 (fr) * 1992-05-21 1993-11-25 Henkel Kommanditgesellschaft Auf Aktien Procede de fabrication continue d'un detergent et/ou d'un nettoyant granulaire
WO1997022685A1 (fr) * 1995-12-20 1997-06-26 Unilever Plc Procede pour preparer un detergent granulaire

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 366 (C - 390) 6 December 1986 (1986-12-06) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2817261A1 (fr) * 2000-11-29 2002-05-31 Rhodia Chimie Sa Cogranules de proteines et de polysaccharides, leur procede d'obtention et leurs utilisations
WO2002044279A1 (fr) * 2000-11-29 2002-06-06 Rhodia Chimie Cogranules de proteines et de polysaccharides, leur procede d'obtention et leurs utilisations.
US10808168B2 (en) 2017-01-19 2020-10-20 Halliburton Energy Services, Inc. Methods for controlling conductive aggregates

Also Published As

Publication number Publication date
GB9625412D0 (en) 1997-01-22
AU5401298A (en) 1998-06-29

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