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1. WO2000038895 - METHOD AND APPARATUS FOR INTRODUCING IN CONTINUOUS A SUBSTANCE IN LIQUID PHASE INTO PLASTICS GRANULES

Publication Number WO/2000/038895
Publication Date 06.07.2000
International Application No. PCT/EP1999/010258
International Filing Date 20.12.1999
Chapter 2 Demand Filed 12.07.2000
IPC
B01F 3/12 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
3Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed
12liquids with solids
B01F 5/06 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
5Flow mixers; Mixers for falling materials, e.g. solid particles
06Mixers in which the components are pressed together through slits, orifices, or screens
B01F 5/20 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
5Flow mixers; Mixers for falling materials, e.g. solid particles
18Spray-mixers
20with nozzles
B01F 13/10 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
13Other mixers; Mixing plant, including combinations of dissimilar mixers
10Mixing plant, including combinations of dissimilar mixers
B01J 2/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
2Processes or devices for granulating materials, in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
B29B 7/94 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
7Mixing; Kneading
80Component parts, details or accessories; Auxiliary operations
88Adding charges
94Liquid charges
CPC
B01F 15/0254
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
15Accessories for mixers ; ; Auxiliary operations or auxiliary devices; Parts or details of general application
02Feed or discharge mechanisms
0201Feed mechanisms
0227characterized by the means for feeding the components to the mixer
0254using sprayers, nozzles, jets
B01F 2003/1257
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
3Mixing, e.g. dispersing, emulsifying, according to the phases to be mixed
12liquids with solids
1257by introducing liquids in solid material, e.g. to obtain slurries
B01F 2013/1094
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
13Other mixers; Mixing plant, including combinations of ; mixers, e.g. of; dissimilar mixers
10Mixing plant, including combinations of ; mixers, e.g. of; dissimilar mixers
1075combining mixing with other treatments
1094with coating
B01F 2013/1097
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
13Other mixers; Mixing plant, including combinations of ; mixers, e.g. of; dissimilar mixers
10Mixing plant, including combinations of ; mixers, e.g. of; dissimilar mixers
1075combining mixing with other treatments
1097with drying
B01F 5/0602
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
5Flow mixers
06Mixers in which the components are pressed together through slits, orifices, or screens; ; Static mixers; Mixers of the fractal type
0602Static mixers, i.e. mixers in which the mixing is effected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
B01F 5/205
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
5Flow mixers
18Spray-mixers ; ; Mixing intersecting sheets of material, e.g. conical liquid sheets
20with nozzles
205for spraying a fluid on falling particles or on a liquid curtain
Applicants
  • PIRELLI CAVI E SISTEMI S.P.A. [IT/IT]; Viale Sarca, 222 I-20126 Milano, IT (AllExceptUS)
  • COLOMBO, Giuseppe [IT/IT]; IT (UsOnly)
  • FOLCINI, Pierluigi [IT/IT]; IT (UsOnly)
  • POZZATI, Giovanni [IT/IT]; IT (UsOnly)
  • DEL BRENNA, Marcello [IT/AU]; AU (UsOnly)
Inventors
  • COLOMBO, Giuseppe; IT
  • FOLCINI, Pierluigi; IT
  • POZZATI, Giovanni; IT
  • DEL BRENNA, Marcello; AU
Common Representative
  • PIRELLI CAVI E SISTEMI S.P.A.; Viale Sarca, 222 I-20126 Milano, IT
Priority Data
60/114,53431.12.1998US
98204456.229.12.1998EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR INTRODUCING IN CONTINUOUS A SUBSTANCE IN LIQUID PHASE INTO PLASTICS GRANULES
(FR) PROCEDE ET APPAREIL D'INTRODUCTION EN CONTINU D'UNE SUBSTANCE EN PHASE LIQUIDE DANS DES GRANULES DE PLASTIQUE
Abstract
(EN)
The invention relates to a method and an apparatus for introducing in continuous a substance in liquid phase into plastics granules by means of the steps of: a) feeding a substantially continuous flow of said plastics granules to at least one substantially static spraying chamber (40, 29), b) spraying said substance in liquid phase onto the plastics granules continuously flowing within said spraying chamber (40, 29), c) submitting to mixing the granules partially or totally coated by said substance in liquid phase, continuously leaving the spraying chamber (40, 29), by means of substantially static mixing means (6) supported within a mixing zone (5) provided downstream of said spraying chamber (40, 29) and comprising at least one mixing chamber (5a, 5b), d) submitting the granules so obtained to drying for a time sufficient to allow a substantially complete absorption of the substance in liquid phase by the granules. Advantageously, the invention allows to continuously impregnate plastics granules, reducing to the best extent the abrasive action on the granules themselves and hence to minimize the generation of plastics dust.
(FR)
La présente invention concerne un procédé et un appareil d'introduction en continu d'une substance en phase liquide dans des granules de plastique. Ce procédé consiste à: a) charger d'abord un écoulement sensiblement continu de ces granules de plastique dans au moins une chambre de pulvérisation sensiblement statique (40, 29), b) pulvériser ensuite cette substance en phase liquide dans les granules de plastiques en continu s'écoulant dans la chambre de pulvérisation (40, 29), c) mélanger ces granules recouvertes totalement ou en partie par cette substance en phase liquide quittant en continue la chambre de pulvérisation (40, 29), au moyen d'un dispositif de mélange sensiblement statique (6) placé dans une zone de mélange (5) située en aval de la chambre de pulvérisation (40, 29) et comprenant au moins une chambre de mélange (5a, 5b), d) sécher les granules ainsi obtenues pendant un temps suffisant pour permettre aux granules d'absorber presque totalement la substance en phase liquide. Pour plus d'efficacité, cette invention permet d'imprégner en continu des granules en plastique, de réduire au mieux l'effet abrasif des granules elles-mêmes et réduire ainsi au minimum la production de poussière de plastique.
Also published as
NZ512464
TR2001/01887
US09892480
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