EP1782893A3 - Sorting of wood chips - Google Patents

Sorting of wood chips Download PDF

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Publication number
EP1782893A3
EP1782893A3 EP06019828A EP06019828A EP1782893A3 EP 1782893 A3 EP1782893 A3 EP 1782893A3 EP 06019828 A EP06019828 A EP 06019828A EP 06019828 A EP06019828 A EP 06019828A EP 1782893 A3 EP1782893 A3 EP 1782893A3
Authority
EP
European Patent Office
Prior art keywords
wood chips
classifying
wood
passes
centrifugal
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Withdrawn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
EP06019828A
Other languages
German (de)
French (fr)
Other versions
EP1782893A2 (en
Inventor
Manfred Dr. Ottow
Robin Ottow
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1782893A2 publication Critical patent/EP1782893A2/en
Publication of EP1782893A3 publication Critical patent/EP1782893A3/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
    • B07B9/02—Combinations of similar or different apparatus for separating solids from solids using gas currents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/04—Control arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/01—Selective separation of solid materials carried by, or dispersed in, gas currents using gravity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING 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
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/086—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by the winding course of the gas stream
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/02—Pretreatment of the raw materials by chemical or physical means
    • D21B1/023—Cleaning wood chips or other raw materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Separating Particles In Gases By Inertia (AREA)

Abstract

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Klassierung von Holzspänen und Holzhackschnitzeln.The invention relates to a method and apparatus for classifying wood shavings and wood chips.

In einem Sägewerk anfallende Holzspäne und Hackschnitzel werden üblicherweise einem Klassiervorgang unterzogen, d.h. das Ausgangsgemisch aus Holzspänen und Hackschnitzeln unterschiedlicher Größe wird in einem großtechnischen Trennverfahren nach dem Kriterium Korngröße oder Sinkgeschwindigkeit zerlegt.Wood chips and wood chips produced in a sawmill are usually subjected to a classification process, i. the starting mixture of wood shavings and wood chips of different sizes is separated in a large-scale separation process according to the criterion grain size or rate of descent.

Die erfindungsgemäße Vorrichtung besteht aus einer Zentrifugalklassiereinheit (1), einer Gegenstromklassiereinheit (2), einem Abscheidetrichter (3) für die Grobfraktion und einem Abscheidezyklon (4) für die Feinfraktion.The device according to the invention consists of a centrifugal classifying unit (1), a counterflow classifying unit (2), a separating funnel (3) for the coarse fraction and a separating cyclone (4) for the fine fraction.

Ein Gas oder Gasgemisch wird durch das Gebläse (5) in der Anlage zirkuliert. Es tritt tangential in die untere Klassierkammer ein, durchströmt erst den Gegenstromklassierer (2), anschließend die Spalte zwischen den Blättern des Zentrifugalklassierers (1), gelangt danach in den Abscheidezyklon (4) und kehrt von dort zum Gebläse (5) zurück.

Figure imgaf001
A gas or gas mixture is circulated through the fan (5) in the system. It enters tangentially into the lower classifying chamber, first passes through the countercurrent classifier (2), then through the gaps between the leaves of the centrifugal classifier (1), then passes into the precipitating cyclone (4) and from there returns to the blower (5).
Figure imgaf001
EP06019828A 2005-11-02 2006-09-22 Sorting of wood chips Withdrawn EP1782893A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005052620A DE102005052620A1 (en) 2005-11-02 2005-11-02 Classifying method for mixture of wood shavings and wood chips, involves introduction of mixture atop centrifugal classifying unit and mixture falls into classifying chamber

Publications (2)

Publication Number Publication Date
EP1782893A2 EP1782893A2 (en) 2007-05-09
EP1782893A3 true EP1782893A3 (en) 2008-07-16

Family

ID=37487437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06019828A Withdrawn EP1782893A3 (en) 2005-11-02 2006-09-22 Sorting of wood chips

Country Status (5)

Country Link
US (1) US7523831B2 (en)
EP (1) EP1782893A3 (en)
CA (1) CA2566835C (en)
DE (1) DE102005052620A1 (en)
RU (1) RU2006138635A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUD20080066A1 (en) 2008-03-28 2009-09-29 Pal S R L CENTRIFUGAL MACHINE FOR THE SEPARATION OF IMPURITIES FROM MASSES OF INCOERENT MATERIALS AND ITS PROCEDURE
JP6009458B2 (en) * 2010-12-30 2016-10-19 セ３テク、シェ、エ、アソシエ、コンスルタン、アン、テクノロジＣ３Ｔｅｃｈ Ｃｈａｉｘ ＆ Ａｓｓｏｃｉｅｓ，Ｃｏｎｓｕｌｔａｎｔｓ Ｅｎ Ｔｅｃｈｎｏｌｏｇｉｅｓ A device for converting thermal energy into mechanical energy
FI123720B (en) * 2011-10-17 2013-10-15 Maricap Oy Separation device and method in connection with a pneumatic material transport system
WO2014096355A1 (en) * 2012-12-21 2014-06-26 Lothar Rauer Process for producing reinforcing fibres
US10316465B2 (en) * 2014-11-19 2019-06-11 GranBio Intellectual Property Holdings, LLC Process and apparatus for biomass cleaning in lignocellulosic biorefineries
JP6262907B1 (en) * 2017-06-01 2018-01-17 株式会社リュウクス Powder classification device and classification system
CN107747245A (en) * 2017-10-24 2018-03-02 广东海翔教育科技有限公司 A kind of hygenic towelette production has pre-wash device
SE543276C2 (en) * 2019-03-19 2020-11-10 Airgrinder Ab Method and device for grinding and drying a material or a mixture of materials
DE102019123034B3 (en) * 2019-08-28 2020-12-03 Khd Humboldt Wedag Gmbh Cyclone with rotating rod basket
US20230019663A1 (en) * 2020-01-23 2023-01-19 Hans W. Fechner Method of glue-coating plant particles
CN115889396B (en) * 2023-01-05 2023-06-16 中国科学院过程工程研究所 Industrial utilization-based field crop straw grading method and device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE832238C (en) * 1950-07-09 1952-02-21 Babcock & Wilcox Dampfkessel W Air separator
US4244814A (en) * 1979-05-14 1981-01-13 Chisso Corporation Floss separator
BE892501A (en) * 1982-03-15 1982-07-01 Cbr Cementbedrijven Nv Pneumatic centrifugal classifier for powders - using double rotor to improve sepn. of fine particles by streams of air
DE3229629A1 (en) * 1982-08-09 1984-02-09 PKS-Engineering GmbH & Co KG, 4720 Beckum Process for separating off extremely fine material from the separation air of an air separator and an air separator for carrying out the process
US4742919A (en) * 1986-04-11 1988-05-10 Beloit Corporation Rotating separator
DE3741650C1 (en) * 1987-12-09 1988-12-01 Orenstein & Koppel Ag Apparatus for classifying dust-like bulk materials
EP0795359A2 (en) * 1996-03-14 1997-09-17 ALOIS SCHEUCH GESELLSCHAFT m.b.H. Air classifier

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR713291A (en) * 1930-06-23 1931-10-24 Fours Et App Stein Device for separating solids in suspension in a gas stream
US3667600A (en) * 1968-11-27 1972-06-06 Kazuo Oi Method and apparatus for centrifugal classification
US3643800A (en) * 1969-05-21 1972-02-22 Bo Gustav Emil Mansson Apparatus for separating solids in a whirling gaseous stream
DE2636989A1 (en) 1976-08-17 1978-02-23 Pallmann Kg Maschf Wood chips crusher with material separator - has housing for vertical feed with opening to produce lateral airflow towards impeller
US4166027A (en) * 1976-11-03 1979-08-28 Rader Companies, Inc. Apparatus and method for pneumatically separating fractions of a particulate material
DE2748336A1 (en) * 1977-10-28 1979-05-03 Heinz Jaeger CIRCULATION SEVER
JPS5843270A (en) * 1981-09-05 1983-03-12 吉森技研株式会社 Sorter
FI68989C (en) 1984-01-05 1985-12-10 Rauma Repola Oy FLISRENGOERARE
DE3446701A1 (en) 1984-12-21 1986-07-03 Pallmann Maschinenfabrik GmbH & Co KG, 6660 Zweibrücken Method and apparatus for preparing shavings
US6193075B1 (en) * 1996-09-30 2001-02-27 Colgate-Palmolive Company Air classification of animal by-products
US20050242008A1 (en) * 2004-04-29 2005-11-03 Peter Simpson Material classifier

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE832238C (en) * 1950-07-09 1952-02-21 Babcock & Wilcox Dampfkessel W Air separator
US4244814A (en) * 1979-05-14 1981-01-13 Chisso Corporation Floss separator
BE892501A (en) * 1982-03-15 1982-07-01 Cbr Cementbedrijven Nv Pneumatic centrifugal classifier for powders - using double rotor to improve sepn. of fine particles by streams of air
DE3229629A1 (en) * 1982-08-09 1984-02-09 PKS-Engineering GmbH & Co KG, 4720 Beckum Process for separating off extremely fine material from the separation air of an air separator and an air separator for carrying out the process
US4742919A (en) * 1986-04-11 1988-05-10 Beloit Corporation Rotating separator
DE3741650C1 (en) * 1987-12-09 1988-12-01 Orenstein & Koppel Ag Apparatus for classifying dust-like bulk materials
EP0795359A2 (en) * 1996-03-14 1997-09-17 ALOIS SCHEUCH GESELLSCHAFT m.b.H. Air classifier

Also Published As

Publication number Publication date
RU2006138635A (en) 2008-05-10
US7523831B2 (en) 2009-04-28
US20070095728A1 (en) 2007-05-03
CA2566835C (en) 2010-01-19
EP1782893A2 (en) 2007-05-09
CA2566835A1 (en) 2007-05-02
DE102005052620A1 (en) 2007-05-03

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