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1. WO2022029318 - METHOD FOR PLASTIC PRE-TREATMENT AND SOLVENT-BASED PLASTIC RECYCLING

Publication Number WO/2022/029318
Publication Date 10.02.2022
International Application No. PCT/EP2021/072069
International Filing Date 06.08.2021
IPC
B07B 7/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, OR SIFTING OR BY USING GAS CURRENTS; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
7Selective separation of solid materials carried by, or dispersed in, gas currents
B07B 7/06 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, OR SIFTING OR BY USING GAS CURRENTS; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
7Selective separation of solid materials carried by, or dispersed in, gas currents
06by impingement against sieves
B29B 17/02 2006.1
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
17Recovery of plastics or other constituents of waste material containing plastics
02Separating plastics from other materials
C08J 11/08 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
11Recovery or working-up of waste materials
04of polymers
06without chemical reactions
08using selective solvents for polymer components
CPC
B07B 2220/02
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
2220Type of materials being separated
02Plastics
B07B 4/04
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
4Separating solids from solids by subjecting their mixture to gas currents
02while the mixtures fall
04in cascades
B07B 7/00
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
7Selective separation of solid materials carried by, or dispersed in, gas currents
B07B 7/06
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
7Selective separation of solid materials carried by, or dispersed in, gas currents
06by impingement against sieves
B07B 9/02
BPERFORMING OPERATIONS; TRANSPORTING
07SEPARATING SOLIDS FROM SOLIDS; SORTING
BSEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
9Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
02Combinations of similar or different apparatus for separating solids from solids using gas currents
B29B 17/02
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
17Recovery of plastics or other constituents of waste material containing plastics;
02Separating plastics from other materials
Applicants
  • APK AG [DE]/[DE]
Inventors
  • HANEL, Hagen
  • WOHNIG, Klaus
Agents
  • KILGER, Ute
Priority Data
20190051.107.08.2020EP
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) METHOD FOR PLASTIC PRE-TREATMENT AND SOLVENT-BASED PLASTIC RECYCLING
(FR) PROCÉDÉ DE PRÉTRAITEMENT DE MATIÈRE PLASTIQUE ET DE RECYCLAGE À BASE DE SOLVANT DE MATIÈRE PLASTIQUE
Abstract
(EN) The present invention relates to a method for downsizing, in particular shredding, of plastic material and removing dust from said downsized plastic material. The invention also relates to a method for solvent-based recycling a plastic material with an integrated step of addition of functional solid auxiliaries to the solution comprising the thermoplastic target polymer. The invention also relates to a method for plastic recycling with an integrated extraction step. The invention also relates to a method for removing solvents from suspensions or solutions comprising a dissolved thermoplastic target polymer. The invention also relates to a method for removing additives and/or impurities from a fluidized form comprising a thermoplastic target polymer while being processed in an extruder, wherein the fluidized form comprising a thermoplastic target polymer is subjected to a counter-stream of at least one extractant. It also relates to a plastic waste recycling system for recycling a target polymer.
(FR) La présente invention concerne un procédé de réduction de taille, en particulier de déchiquetage, de matière plastique et d'élimination de poussière à partir de ladite matière plastique dont la taille a été réduite. L'invention concerne également un procédé de recyclage à base de solvant d'une matière plastique avec une étape intégrée d'ajout d'auxiliaires solides fonctionnels à la solution comprenant le polymère cible thermoplastique. L'invention concerne également un procédé de recyclage de matière plastique avec une étape d'extraction intégrée. L'invention concerne également un procédé d'élimination de solvants de suspensions ou de solutions comprenant un polymère cible thermoplastique dissous. L'invention concerne également un procédé pour éliminer des additifs et/ou des impuretés présents dans une forme fluidisée comprenant un polymère cible thermoplastique lors de son traitement dans une extrudeuse, la forme fluidisée comprenant un polymère cible thermoplastique étant soumise à un contre-courant d'au moins un solvant d'extraction. L'invention concerne également un système de recyclage de déchets plastiques pour le recyclage d'un polymère cible.
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