Method and apparatus for separating mixed plastics using flotation techniques

Daniels, Edward J.; Jody, Bassam J.; Pomykala, Joseph A.

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A - human necessities
A01 - agriculture
A21 - baking
A22 - butchering
A23 - foods or foodstuffs
A24 - tobacco
A41 - wearing apparel
A42 - headwear
A43 - footwear
A44 - haberdashery
A45 - hand or travelling articles
A46 - brushware
A47 - furniture
A61 - medical or veterinary science
A62 - life-saving
A63 - sports
A99 - subject matter not otherwise provided for in this section
B - performing operations
B01 - physical or chemical processes or apparatus in general
B02 - crushing, pulverising, or disintegrating
B03 - separation of solid materials using liquids or using pneumatic tables or jigs
B04 - centrifugal apparatus or machines for carrying-out physical or chemical processes
B05 - spraying or atomising in general
B06 - generating or transmitting mechanical vibrations in general
B07 - separating solids from solids
B08 - cleaning
B09 - disposal of solid waste
B21 - mechanical metal-working without essentially removing material
B22 - casting
B23 - machine tools
B24 - grinding
B25 - hand tools
B26 - hand cutting tools
B27 - working or preserving wood or similar material
B28 - working cement, clay, or stone
B29 - working of plastics
B30 - presses
B31 - making articles of paper, cardboard or material worked in a manner analogous to paper
B32 - layered products
B33 - additive manufacturing technology
B41 - printing
B42 - bookbinding
B43 - writing or drawing implements
B44 - decorative arts
B60 - vehicles in general
B61 - railways
B62 - land vehicles for travelling otherwise than on rails
B63 - ships or other waterborne vessels
B64 - aircraft
B65 - conveying
B66 - hoisting
B67 - opening, closing {or cleaning} bottles, jars or similar containers
B68 - saddlery
B81 - microstructural technology
B82 - nanotechnology
B99 - subject matter not otherwise provided for in this section
C - chemistry
C01 - inorganic chemistry
C02 - treatment of water, waste water, sewage, or sludge
C03 - glass
C04 - cements
C05 - fertilisers
C06 - explosives
C07 - organic chemistry
C08 - organic macromolecular compounds
C09 - dyes
C10 - petroleum, gas or coke industries
C11 - animal or vegetable oils, fats, fatty substances or waxes
C12 - biochemistry
C13 - sugar industry
C14 - skins
C21 - metallurgy of iron
C22 - metallurgy
C23 - coating metallic material
C25 - electrolytic or electrophoretic processes
C30 - crystal growth
C40 - combinatorial technology
C99 - subject matter not otherwise provided for in this section
D - textiles
D01 - natural or man-made threads or fibres
D02 - yarns
D03 - weaving
D04 - braiding
D05 - sewing
D06 - treatment of textiles or the like
D07 - ropes
D10 - indexing scheme associated with sublasses of section d, relating to textiles
D21 - paper-making
D99 - subject matter not otherwise provided for in this section
E - fixed constructions
E01 - construction of roads, railways, or bridges
E02 - hydraulic engineering
E03 - water supply
E04 - building
E05 - locks
E06 - doors, windows, shutters, or roller blinds in general
E21 - earth drilling
E99 - subject matter not otherwise provided for in this section
F - mechanical engineering
F01 - machines or engines in general
F02 - combustion engines
F03 - machines or engines for liquids
F04 - positive - displacement machines for liquids
F05 - indexing schemes relating to engines or pumps in various subclasses of classes f01-f04
F15 - fluid-pressure actuators
F16 - engineering elements and units
F17 - storing or distributing gases or liquids
F21 - lighting
F22 - steam generation
F23 - combustion apparatus
F24 - heating
F25 - refrigeration or cooling
F26 - drying
F27 - furnaces
F28 - heat exchange in general
F41 - weapons
F42 - ammunition
F99 - subject matter not otherwise provided for in this section
G - physics
G01 - measuring
G02 - optics
G03 - photography
G04 - horology
G05 - controlling
G06 - computing
G07 - checking-devices
G08 - signalling
G09 - education
G10 - musical instruments
G11 - information storage
G12 - instrument details
G16 - information and communication technology [ict] specially adapted for specific application fields
G21 - nuclear physics
G99 - subject matter not otherwise provided for in this section
H - electricity
H01 - basic electric elements
H02 - generation
H03 - basic electronic circuitry
H04 - electric communication technique
H05 - electric techniques not otherwise provided for
H99 - subject matter not otherwise provided for in this section
Y - new / cross sectional technologies
Y02 - technologies or applications for mitigation or adaptation against climate change
Y04 - information or communication technologies having an impact on other technology areas
Y10 - technical subjects covered by former uspc

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Title: Method and apparatus for separating mixed plastics using flotation techniques

Abstract

A method and apparatus are provided for separating mixed plastics using flotation techniques including a first stage initial washing tank for washing of incoming plastics and providing a first separation process and at least one separation module. The first stage initial washing tank includes a perforated basket to hold heavy materials, such as metals, glass, and the like. Each separation module includes a separation tank, a feeding section for feeding of mixed stream into the separation tank; and a collecting section for collecting of the separated mixed plastics including floaters and sinkers from the separation tank. The separation tank has no moving parts. Each separation tank and the first stage initial washing tank is a standard off-the-shelf circular tank with a flat bottom. Washing and drying steps are eliminated between separation stages. Batch processing is replaced with generally continuous operation. An integrated vibrating screen and air classification system is provided.

Inventors:: Daniels, Edward J.; Jody, Bassam J.; Pomykala, Jr., Joseph A.

Issue Date:: Tue Aug 14 00:00:00 EDT 2007

Research Org.:: UChicago Argonne LLC, Chicago, IL (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1531537

Patent Number(s):: 7255233

Application Number:: 10/866,963

Assignee:: UChicago Argonne, LLC (Chicago, IL)

Patent Classifications (CPCs):: B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03B - SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
B01D21/0012 - {Settling tanks making use of filters, e.g. by floating layers of particulate material}
B01D21/02 - Settling tanks {with single outlets for the separated liquid}
B01D21/2405 - {Feed mechanisms for settling tanks}
B01D21/245 - {Discharge mechanisms for the sediments}
B01D21/2472 - {Means for fluidising the sediments, e.g. by jets or mechanical agitators}
B01D21/2483 - {Means or provisions for manually removing the sediments}
B01D21/2488 - {bringing about a partial recirculation of the liquid, e.g. for introducing chemical aids}
B01D21/286 - {Means for gentle agitation for enhancing flocculation}
B01D21/34 - Controlling the feed distribution
B01D2221/14 - Separation devices for workshops, car or semiconductor industry, e.g. for separating chips and other machining residues

B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03B - SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
B03B5/36 - Devices therefor, other than using centrifugal force

B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03D - FLOTATION
B03D1/028 - {Control and monitoring of flotation processes
B03D1/1456 - {Feed mechanisms for the slurry}
B03D1/1462 - {Discharge mechanisms for the froth}
B03D1/1468 - {Discharge mechanisms for the sediments}
B03D1/16 - with impellers

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29B - PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED
B29B17/02 - Separating plastics from other materials
B29B2017/0015 - {Washing, rinsing}
B29B2017/0224 - {Screens, sieves}
B29B2017/0244 - {in liquids}
B29B2017/0272 - {Magnetic separation}

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29K - INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
B29K2025/00 - Use of polymers of vinyl-aromatic compounds {or derivatives thereof} as moulding material
B29K2055/02 - ABS polymers, i.e. acrylonitrile-butadiene-styrene polymers

B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29L - INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
B29L2031/7622 - {Refrigerators}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02W - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
Y02W30/52 - Dismantling or mechanical processing of waste for the recovery of materials during separation, disassembly, pre-processing or upgrading
Y02W30/62 - Plastics recycling

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y10S209/913 - Screw feed conveyor
Y10S209/93 - Municipal solid waste sorting

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DOE Contract Number:: W-31-109-ENG-38

Resource Type:: Patent

Resource Relation:: Patent File Date: 2004-06-14

Country of Publication:: United States

Language:: English

Citation Formats


                    Daniels, Edward J., Jody, Bassam J., and Pomykala, Jr., Joseph A. Method and apparatus for separating mixed plastics using flotation techniques.  United States: N. p., 2007. 
        Web.

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                    Daniels, Edward J., Jody, Bassam J., & Pomykala, Jr., Joseph A. Method and apparatus for separating mixed plastics using flotation techniques.  United States.

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                    Daniels, Edward J., Jody, Bassam J., and Pomykala, Jr., Joseph A. Tue .  
        "Method and apparatus for separating mixed plastics using flotation techniques".  United States.  https://www.osti.gov/servlets/purl/1531537.

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@article{osti_1531537,

  title        = {Method and apparatus for separating mixed plastics using flotation techniques},

  author       = {Daniels, Edward J. and Jody, Bassam J. and Pomykala, Jr., Joseph A.},

  abstractNote = {A method and apparatus are provided for separating mixed plastics using flotation techniques including a first stage initial washing tank for washing of incoming plastics and providing a first separation process and at least one separation module. The first stage initial washing tank includes a perforated basket to hold heavy materials, such as metals, glass, and the like. Each separation module includes a separation tank, a feeding section for feeding of mixed stream into the separation tank; and a collecting section for collecting of the separated mixed plastics including floaters and sinkers from the separation tank. The separation tank has no moving parts. Each separation tank and the first stage initial washing tank is a standard off-the-shelf circular tank with a flat bottom. Washing and drying steps are eliminated between separation stages. Batch processing is replaced with generally continuous operation. An integrated vibrating screen and air classification system is provided.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Aug 14 00:00:00 EDT 2007},

  month        = {Tue Aug 14 00:00:00 EDT 2007}

}

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Title: Method and apparatus for separating mixed plastics using flotation techniques

Abstract

Citation Formats

Flotation system patent, October 1982

Method and plant for separating polymeric materials patent-application, February 2004

Material classifying apparatus patent, November 1999

Dual deck dewatering screen patent, March 2002

Siphon gravity classifier and clarifier patent, October 1990

Method and apparatus for separating and classifying scrap plastic materials patent, October 1993

Compost purification method and apparatus patent, March 1999

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Method and apparatus for sorting articles with small density differences utilizing a flotation stream patent, September 1991

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Method and apparatus for separating a protein membrane and shell material in waste egg shells patent-application, July 2003

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Method of separating a mixture of plastics comprising at least three components using electrostatic techniques patent, October 1994

Method and installation for separating all categories of polymer materials patent, October 2002

Apparatus for Separating and Removing Floatables patent, March 1971

Apparatus and method of separating plastic films from garbage for collection patent, February 2006

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Simplified valuable mineral sorting apparatus and method of sorting valuable minerals using the same patent, January 2016

Flotation system
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Method and plant for separating polymeric materials
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Material classifying apparatus
patent, November 1999

Dual deck dewatering screen
patent, March 2002

Siphon gravity classifier and clarifier
patent, October 1990

Method and apparatus for separating and classifying scrap plastic materials
patent, October 1993

Compost purification method and apparatus
patent, March 1999

Fluidized-bed drying and classifying apparatus
patent, October 2001

Flotation apparatus for reclaiming bonded, two-resin articles
patent, March 1989

Hydrogravity system and process for reclaiming and purifying a solid, multiple domain feedstock
patent-application, August 2005

Debagger sorter machine
patent, August 1994

Method and apparatus for sorting articles with small density differences utilizing a flotation stream
patent, September 1991

Method for the separation of high impact polystyrene (HIPS) and acrylonitrile butadiene styrene (ABS) plastics
patent, August 1997

Method and apparatus for separating a protein membrane and shell material in waste egg shells
patent-application, July 2003

Process for the recovery and separation of plastics
patent, July 2003

Method of separating a mixture of plastics comprising at least three components using electrostatic techniques
patent, October 1994

Method and installation for separating all categories of polymer materials
patent, October 2002

Apparatus for Separating and Removing Floatables
patent, March 1971

Apparatus and method of separating plastic films from garbage for collection
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Process and device for separating plastics of different chemical composition by flotation
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System and method for making low volatile carboneaceous matter with supercritical CO2
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System and method for making carbon foam anodes
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System and method for activating carbonaceous material
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Fluid flow management through a wastewater level manipulation system and associated methods
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Process and apparatus for separating solid mixtures
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Fluid flow management through a wastewater level manipulation system and associated methods
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