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EP1782893A2 - Triage de copeaux de bois - Google Patents

Triage de copeaux de bois Download PDF

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Publication number
EP1782893A2
EP1782893A2 EP06019828A EP06019828A EP1782893A2 EP 1782893 A2 EP1782893 A2 EP 1782893A2 EP 06019828 A EP06019828 A EP 06019828A EP 06019828 A EP06019828 A EP 06019828A EP 1782893 A2 EP1782893 A2 EP 1782893A2
Authority
EP
European Patent Office
Prior art keywords
classifying
mixture
centrifugal
wood chips
rotor
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Withdrawn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)
English (en)
Other versions
EP1782893A3 (fr
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/fr
Publication of EP1782893A3 publication Critical patent/EP1782893A3/fr
Withdrawn legal-status Critical Current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

Definitions

  • the invention relates to a method and apparatus for classifying wood shavings and wood chips.
  • 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 size is decomposed in a large-scale separation process according to the criterion grain size or rate of descent.
  • the classification is made e.g. for separating unwanted fines from wood chips or for separating wood chips from sawdust.
  • the processing industry e.g. Particleboard production, pulp industry, typically subjects sawdust and wood chips to further classification steps to obtain the most appropriate fraction for the particular application.
  • Screening systems are known as state of the art with which wood chips and wood chips are screened and made available for marketing. By using different screen plates with different mesh sizes different grain sizes can be produced.
  • Out DE 26 36 989 is a crushing machine for light material, in particular wood chips, known, in which the chips fall from an output device down and are traversed by a transverse to their direction transverse flow.
  • unwanted coarse and specific heavier foreign body particles such as metal parts or stones are removed from the feed.
  • the cross flow meets the down falling, unpurified Good, this vortexes and tears only the specific lighter to be comminuted with good particles. Due to their higher specific weight, the foreign body particles have a much greater falling energy than the good particles to be comminuted, so that they are hardly deflected by the transverse flow, fall down and are separated from the remaining particles of good.
  • Claims 2 to 7 and 9 to 16 contain advantageous embodiments of the inventive solution of claim 1 or claim 8.
  • the device according to the invention consists of a centrifugal classifying unit, a counterflow classifying unit, a separating fractionator for the coarse fraction and a separating cyclone for the fine fraction.
  • a gas or gas mixture is circulated through the fan in the system. It enters the bottom classifier chamber tangentially, first passes through the counterflow classifier, then through the gaps between the leaves of the centrifugal classifier, then enters the separation cyclone and returns to the blower
  • the product is placed on top of the centrifugal classifier and falls into the top classifier chamber, while countercurrent gas draws much of the product into the rotor.
  • Coarser particles are reflected by the rotor against the gas flow in the upper classifying chamber, finer particles are taken from the gas flow against the centrifugal action of the rotor.
  • the fine fraction is now separated in the separation cyclone.
  • the particles that have either been ejected by the rotor or have passed the rotor reach the region of countercurrent classification.
  • coarser particles fall due to the gravitational force against the gas flow through the annular surface surrounding the Umströmungsharm.
  • Lighter particles are taken up by the flow and fed back to the rotor.
  • the coarse fraction is now discharged in the separation funnel.
  • the separation grain size of the Zentrifugalklassierers depends on the rotor speed or its peripheral speed and the fan power or the gas velocity in the passage between the rotor blades. Higher rotor speed or lower fan power lead to finer separation grain.
  • the separation grain size of the countercurrent classifier depends on the gas velocity in the narrowest cross-section and thus on the blower output and the free cross-sectional area. Higher fan power or lower cross-section result in a coarser separating grain.
  • blower power also has a significant influence on the application of fine material. Higher fan performance results in higher output.
  • the supplied material flow also affects the application of fine material. Greater material flow leads to lower discharge.
  • the blower output is kept constant at the highest possible value.
  • the free cross section can be adjusted there.
  • the Umströmungsisson is arranged adjustable. By lifting the Umströmungs stressess the free cross-section is increased, reduced by lowering.
  • the gas mixture is advantageously used air.
  • nitrogen is particularly advantageously used as the gas, since this reduces the risk of fire or explosion.
  • a plant according to the invention consists of a centrifugal classifying unit 1, a counterflow classifying unit 2, a separating funnel for the coarse fraction 3 and a separating cyclone for the fine fraction 4.
  • the gas mixture 12 in particular air, is circulated as shown in FIG. 2 by the blower 5 in the system. It enters tangentially into the lower classifying chamber, flows upwards in a spiraling motion, through the leaves of the circulating rotor 6 in the direction of the separating cyclone 4. There, the gas mixture is guided downwards on a spiral-narrowing path, then turns before reaching the outlet opening 11 um, flows up in the middle of the separation cyclone 4 and then follows the pipeline to the suction side of the blower 5.
  • a mixture of wood shavings and wood chips consisting of coarser 14 and finer particles of different mass, is introduced at the top of the centrifugal classifying unit 1 and falls into the upper classifying chamber, countercurrent gas 1 draws most of the product into the rotor 6.
  • Coarser particles 14 are thrown back by the rotor 6 against the gas flow in the upper Klassierhunt, finer particles 13 are entrained by the gas flow against the centrifugal action of the rotor 5.
  • the fine fraction is now deposited in the deposition cyclone 4.
  • the particles that have either been ejected by the rotor or have passed the rotor reach the region of the countercurrent classification 2.
  • coarser particles fall 14 due to the gravitational force against the gas flow through the passage opening, while lighter 13 particles entrained with the flow up and again supplied to the rotor 6.
  • the coarse fraction 14 is now discharged in the separation funnel 3.

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)
EP06019828A 2005-11-02 2006-09-22 Triage de copeaux de bois Withdrawn EP1782893A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005052620A DE102005052620A1 (de) 2005-11-02 2005-11-02 Klassierung von Holzspänen und Hackschnitzeln

Publications (2)

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

Family

ID=37487437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06019828A Withdrawn EP1782893A3 (fr) 2005-11-02 2006-09-22 Triage de copeaux de bois

Country Status (5)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009118392A1 (fr) 2008-03-28 2009-10-01 Pal Srl Machine centrifuge destinée à séparer des impuretés de masses de matériaux incohérents et procédé associé
WO2014096355A1 (fr) * 2012-12-21 2014-06-26 Lothar Rauer Procédé de fabrication de fibres de renforcement
CN107747245A (zh) * 2017-10-24 2018-03-02 广东海翔教育科技有限公司 一种湿纸巾生产有预先清洗装置

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2659098B1 (fr) * 2010-12-30 2016-10-12 C3Tech Chaix & Associes Consultants En Technologies Dispositif de conversion d'énergie thermique en énergie mécanique
FI123720B (fi) * 2011-10-17 2013-10-15 Maricap Oy Pneumaattisen materiaalinsiirtojärjestelmän erotuslaite ja menetelmä
US10316465B2 (en) * 2014-11-19 2019-06-11 GranBio Intellectual Property Holdings, LLC Process and apparatus for biomass cleaning in lignocellulosic biorefineries
JP6262907B1 (ja) * 2017-06-01 2018-01-17 株式会社リュウクス 粉体の分級装置及び分級システム
SE543276C2 (sv) * 2019-03-19 2020-11-10 Airgrinder Ab Förfarande och anordning för att söndermala och t orka ett material eller en materialblandning
DE102019123034B3 (de) * 2019-08-28 2020-12-03 Khd Humboldt Wedag Gmbh Zyklon mit rotierendem Stabkorb
US12240142B2 (en) * 2020-01-23 2025-03-04 Siempelkamp Maschinen-Und Anlagenbau Gmbh Method of glue-coating plant particles
CN115889396B (zh) * 2023-01-05 2023-06-16 中国科学院过程工程研究所 一种基于工业化利用的田间农作物秸秆分级方法及装置
CN118926098B (zh) * 2024-09-04 2025-02-07 中煤地质集团有限公司 一种煤矸石分流破碎处理系统及工艺

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2636989A1 (de) 1976-08-17 1978-02-23 Pallmann Kg Maschf Zerkleinerungsmaschine
BE892501A (fr) 1982-03-15 1982-07-01 Cbr Cementbedrijven Nv Classificateur centrifuge pneumatique de solides pulverulents
DE3229629A1 (de) 1982-08-09 1984-02-09 PKS-Engineering GmbH & Co KG, 4720 Beckum Verfahren zur abtrennung von feinstgut aus der sichtluft eines windsichters und windsichter zur durchfuehrung des verfahrens
US4742919A (en) 1986-04-11 1988-05-10 Beloit Corporation Rotating separator
DE3501960C2 (fr) 1984-01-05 1988-06-16 Rauma-Repola Oy, Valko, Fi
DE3446701C2 (fr) 1984-12-21 1988-08-18 Pallmann Maschinenfabrik Gmbh & Co Kg, 6660 Zweibruecken, De
DE3741650C1 (en) 1987-12-09 1988-12-01 Orenstein & Koppel Ag Apparatus for classifying dust-like bulk materials

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR713291A (fr) * 1930-06-23 1931-10-24 Fours Et App Stein Dispositif de séparation de matières solides en suspension dans un courant gazeux
DE832238C (de) * 1950-07-09 1952-02-21 Babcock & Wilcox Dampfkessel W Windsichter
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
US4166027A (en) * 1976-11-03 1979-08-28 Rader Companies, Inc. Apparatus and method for pneumatically separating fractions of a particulate material
DE2748336A1 (de) * 1977-10-28 1979-05-03 Heinz Jaeger Umluftsichter
US4244814A (en) * 1979-05-14 1981-01-13 Chisso Corporation Floss separator
JPS5843270A (ja) * 1981-09-05 1983-03-12 吉森技研株式会社 分級装置
AT403133B (de) * 1996-03-14 1997-11-25 Scheuch Alois Gmbh Sichter
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
DE2636989A1 (de) 1976-08-17 1978-02-23 Pallmann Kg Maschf Zerkleinerungsmaschine
BE892501A (fr) 1982-03-15 1982-07-01 Cbr Cementbedrijven Nv Classificateur centrifuge pneumatique de solides pulverulents
DE3229629A1 (de) 1982-08-09 1984-02-09 PKS-Engineering GmbH & Co KG, 4720 Beckum Verfahren zur abtrennung von feinstgut aus der sichtluft eines windsichters und windsichter zur durchfuehrung des verfahrens
DE3501960C2 (fr) 1984-01-05 1988-06-16 Rauma-Repola Oy, Valko, Fi
DE3446701C2 (fr) 1984-12-21 1988-08-18 Pallmann Maschinenfabrik Gmbh & Co Kg, 6660 Zweibruecken, De
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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009118392A1 (fr) 2008-03-28 2009-10-01 Pal Srl Machine centrifuge destinée à séparer des impuretés de masses de matériaux incohérents et procédé associé
WO2014096355A1 (fr) * 2012-12-21 2014-06-26 Lothar Rauer Procédé de fabrication de fibres de renforcement
CN107747245A (zh) * 2017-10-24 2018-03-02 广东海翔教育科技有限公司 一种湿纸巾生产有预先清洗装置

Also Published As

Publication number Publication date
US20070095728A1 (en) 2007-05-03
RU2006138635A (ru) 2008-05-10
CA2566835C (fr) 2010-01-19
EP1782893A3 (fr) 2008-07-16
US7523831B2 (en) 2009-04-28
CA2566835A1 (fr) 2007-05-02
DE102005052620A1 (de) 2007-05-03

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