EP0015249A2 - Verfahren zur Zerkleinerung von der Verbrennung dienendem vorkomprimiertem Holz oder Zellulosematerial bzw. brett- oder streifenartigen Materials an sich sowie Vorrichtung zur Durchführung dieses Verfahrens - Google Patents

Verfahren zur Zerkleinerung von der Verbrennung dienendem vorkomprimiertem Holz oder Zellulosematerial bzw. brett- oder streifenartigen Materials an sich sowie Vorrichtung zur Durchführung dieses Verfahrens Download PDF

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Publication number
EP0015249A2
EP0015249A2 EP80850019A EP80850019A EP0015249A2 EP 0015249 A2 EP0015249 A2 EP 0015249A2 EP 80850019 A EP80850019 A EP 80850019A EP 80850019 A EP80850019 A EP 80850019A EP 0015249 A2 EP0015249 A2 EP 0015249A2
Authority
EP
European Patent Office
Prior art keywords
rolls
roll
machine
projections
depressions
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Withdrawn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
EP80850019A
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English (en)
French (fr)
Other versions
EP0015249A3 (de
Inventor
Erik Gustav Lennart Eriksson
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 EP0015249A2 publication Critical patent/EP0015249A2/de
Publication of EP0015249A3 publication Critical patent/EP0015249A3/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/033—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment comminuting or crushing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
    • B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/442—Waste feed arrangements
    • F23G5/444—Waste feed arrangements for solid waste
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/22—Waste papers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/26—Biowaste
    • F23G2209/261—Woodwaste

Definitions

  • the invention relates to a method and apparatus for comminuting for combustion or gasification, suitably in conjunction with a stoker, of wood or cellulose material, for example, such as is precompressed, or board- or strip-like per se, such as waste . or offcuts from wood, chip or fiber material, logging debris or household waste etc.
  • Stoking equipment for feeding steam boilers with wood chips, for example, wherein a screw is used to feed the chips from a hopper and into the combustion chamber of the boiler.
  • Equipment is also known, in which a moving grate feeds fuel from a fuel hopper to a water pipe boiler, for example.
  • the present invention intends to remedy this deficiency, and consists primarily of a method of comminuting the material in question, wherein it is first advanced under a feed and/or spreading or precompressing means (roll or the like) and is thereafter taken in between comminuting rolls, which can be made up from rings, and arranged in pairs, suitably in direct conjunction with the combustion or gasification location, where each such roll is provided with projections and depressions formed wavily, trapezoidally, p yramidally or conically, and where the rolls in each pair are adapted in relation to each other such that the projections of one roll partly engage in the depressions of the other roll, the rolls being disposed at a distance from each other such that the substantially board-shaped material is gripped between the rolls, and during its passage therebetween is bent between the projections and depressions of the rolls until rupture occurs by exceeding the ultimate elongation, shearing and/or compression strength of the material, which is thus directly comminuted into pieces suitable for combustion or gasification.
  • the invention also relates to a special comminuting apnaratus or machine for feeding a combustion or gasification apparatus (e.g. stoker equipment) with wood or cellulose material which is precompacted or.board- or strip-alike per se, for carrying out the said method, the .invention substantially consisting of the machine containing at least one roll pair for receiving the material, where each roll is provided with mutually alternating projections and depressions around its periphery, corresponding to depressions and projections, respectively, on the other roll in each such pair, which is driven with the same peripheral velocity for both rolls, said projections and depressions having at least along the circumference, but suitably also axially, a form which is corrugated, trapezoidal, pyramidal or conical, the projections on one roll engaging in the depressions corresponding thereto on the other roll, the spacing between the rolls being adjustable such that the sum of a radius to the crest of a projection on one roll and the radius to the bottom of the complementary depression on the other roll is less than
  • the invention otherwise relates to the characterizing features more closely disclosed by subclaims 2-5 and 7-13.
  • a fuel material which is board- or strip-like, or the fuel material is pretreated so that a precompacted layer thereof is supplied to the comminuting rolls
  • the advantages are gained that the comminuting apparatus will funcion such that the material advances itself, that it will be conservative of energy and can be driven with a very small motor, that it will run comparatively quietly, that it discharges a uniform lump size suitable for combustion, and that the apparatus will be robust and easily manufactured, by enabling the roll cylinders or rings themselves to be cast iron or forged and thus not require the observation of any accurate tolerances.
  • the apparatus looks after itself automatically and requires very litte inspection and service. Its capacity can also be easily varied by regulating the speed of the rolls, and the lump size can be regulated by adjusting the distance between the rolls as already mentioned.
  • the comminuting machine in accordance with the invention illustrated together with a stoker plant in Fig. 1, comprises a pair of comminuting rolls 4, 5 mounted rotatably and movable in other about shafts 9 and 10 on a frame 16.
  • the frame 16 is placed in immediate comiunchich to a feed track 11 in a stoker plant with a combustion chamber 3 arranged in a boiler.
  • One roll 5 is mounted on a fixed shaft 10
  • the other roll is mounted on a shaft 9, yleldingly suspended in glide blocks 17 arranged at either end of the shaft 9, said blocks supporting the bearings of the shaft 9 with the help of springs 13, and via a piston rod 19 can apply pressure to a piston in a hydraulic cylinder 12.
  • the hydraulic cylinder 12 is connected via a pipe 13 to a pressure accumulator and a bleed valve, neither of which is shown on the drawing. In this way, an incompressible disturbing body which could come between the rolls is caused to unload the hydraulic pressure so that the rolls are moved apart and the body can be removed.
  • the material which is supplied to the comminuting machine in Fig. 1 is conceived to consist of wooden chipboard 1, which is first inserted under a feed roll 2, mounted in a glide block 21by means of a shaft 20.
  • the block in turn glides upwards and downwards in a frame 22, under the effect of the spring 23, and a screw actuated by a wheel 24, can be caused to make the roll 2 press harder or less hard on a substructure 25, which is suspended in the frames 16 and 22, and on which substructure the chipboard 1 is advanced.
  • the board 1 is drawn in between the rolls as a result of these being adjusted at a certain spacing from each other, corresponding to the thickness of the chipboard 1.
  • the comminuting machine's rolls 4 and 5 are suitably driven at the same peripheral velocity by spur gears via a reduction gear from a small power source, suitably an electric motor, which is not shown on the drawing.
  • a small power source suitably an electric motor, which is not shown on the drawing.
  • the power requirement for this drive is insignificant.
  • the spacing between the rolls is selected so that the material fed in, in this case the chipboard 1, is easily drawn in between the rolls.
  • pieces or lumps 8 of a suitable size for combustion or gasification will be fed to the stoker feed track 11.
  • Breaking up of the board 1 occurs by the projections 6 and depressions 7 being formed and the distance between the rolls 4 and 5 selected such that the board 1 is bent so much between the projections 6 and depressions 7 that the ultimate elongation, shearing and/or compression strength of the material is.exceeded.
  • precompressed wood or cellulose material such as waste or rejects of wood, chip or fiber material, logging debris or household waste etc. can also be comminuted.
  • the spreading or precompressing means 2, 21, 23, 22 is provided with a hopper 26 into which the fuel material, e.g. household waste, can be tipped.
  • the wheel 24 is screwed down more tightly so that the pressure from the spring 23 causes the roll 2 to press heavily against the substructure 25.
  • a precompacted material 1 is thus obtained, which is subsequently fed in between the rolls 4, 5 in the comminuting machine 4, 5, 17, 16 in the same way as the chipboard 1.
  • the comminuting rolls 4 and 5 can be built up from roll rings 15 thrust onto a tube 14; said rings being provided with projections 6 and depressions 7.
  • Fig. 4 seven such rings are conceived as being put together into such a roll. The rolls are then carried on shafts so that a comminuting machine is formed, of the kind shown as an example in Fig. 1.
  • Fig. 4 The rings for the roll illustrated in Fig. 4 are more closely depicted in Fig. 2, where one such ring is houwn from one side, and in Fig. 3, where it is shown in cross section along the line A-A in Fig. 2.
  • Fig. 5 there is indicated a more acute form for the projections 6 and depressions 7, which could be conceivable for thinner and more brittle material, both rolls 15 being shown in the starting position close to each other, although in practice they must be moved apart in correspondence with the thickness of the precompacted material intended for passing between them.
  • the spacing between the rolls 4 and 5 is intended to be controlled in the comminuting machine illustrated in Fig. 1 by the aid of a hydraulic cylinder 12 with a piston, supplied with hydraulic fluid at a suitable pressure via the pipe 13.
  • a hydraulic cylinder 12 with a piston, supplied with hydraulic fluid at a suitable pressure via the pipe 13.
  • it can also be conceived to allow the adjustment of the relative mutual movement of the rolls to take place mechanically, e.g. with the aid of vertical screws coacting with nuts arranged at either end of the shaft 9.
  • the movement of the roll 4 up or down. can thus be done with the assistance.of an electric motor which drives the vertical screws.
  • the intended position of the roll is determined by blocks, against which the roll glide blocks can be caused to rest.
  • the adjustment of the distance between rolls 4 and 5 can be controlled conventionally by a thickness sensor, e.g. a photocell, on the upsteam side of the comminuting machine.
  • the rolls 4, 5 For breaking up rejected chipboard, it is suitable to make the rolls 4, 5 with a length of 260 cm, corresponding to the width of the boards produced.
  • the adjustment of the roll spacing between a projection crest 6 and the corresponding depression bottom 7 of the other roll should be between 4 and 40 mm, for corresponding to prevalent board thicknesses. If the diameter of the rolls at the projection crests is Dl and the diameter of the rolls at the depression bottoms is D2, with the board thickness being t and the distance between the centres of the rolls L A , then the desired distance L A - ⁇ t s , and thus and thus
  • a suitable construction of the rolls 4, 5 is to thrust forged or cast roll wheels 15 with a thickness of 2 cm and a width of 5-10 cm onto a steel tube 14 with an outside diameter of 40 cm, for example, the wheels being keyed to the tube.
  • the roll wheels are provided with projections 6, e.g. in the form of pyramids with bases of 5 x 5 to 10 x 10 cm and a height of 5 to 10 cm.
  • a suitable outside diamter Dl for the roll wheels 15 is from 40 to 120 cm.
  • the distance between the pyramids in the peripheral direction is determined by the fact that the distance between the flanks of the pyramids should be larger than twice the layer thickness t S'
  • adjacent wheels are relatively displaced by an amount equal to half the pitch of the pyramids in the peripheral direction.
  • the driving motor for the rolls can be regulated either in response to the power requirement for the combustion or gasification plant 3 or in response to the amount of material which is supplied to the spreading or precompressing means 2, 21, 22. If the rate of supplying fuel exceeds the power requirement for the combustion or gasification plant 3, the excessive fuel quantity can be supplied to a buffer store, not shown on the drawing, placed between the machine 4, 5, 12, 13 and said plant 3. To facilitate insertion of the compacted fuel material between the rolls 4 and 5, it is suitable to allow the connecting line of these shafts 9 and 10 to form an obtuse angle with the input direction of the material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Crushing And Grinding (AREA)
  • Processing Of Solid Wastes (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Press Drives And Press Lines (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
EP80850019A 1979-02-22 1980-02-22 Verfahren zur Zerkleinerung von der Verbrennung dienendem vorkomprimiertem Holz oder Zellulosematerial bzw. brett- oder streifenartigen Materials an sich sowie Vorrichtung zur Durchführung dieses Verfahrens Withdrawn EP0015249A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7901620A SE429682B (sv) 1979-02-22 1979-02-22 Forfarande och anordning for sonderdelning av fastbrensle
SE7901620 1979-02-22

Publications (2)

Publication Number Publication Date
EP0015249A2 true EP0015249A2 (de) 1980-09-03
EP0015249A3 EP0015249A3 (de) 1980-09-17

Family

ID=20337376

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80850019A Withdrawn EP0015249A3 (de) 1979-02-22 1980-02-22 Verfahren zur Zerkleinerung von der Verbrennung dienendem vorkomprimiertem Holz oder Zellulosematerial bzw. brett- oder streifenartigen Materials an sich sowie Vorrichtung zur Durchführung dieses Verfahrens

Country Status (6)

Country Link
EP (1) EP0015249A3 (de)
JP (1) JPS55142551A (de)
DK (1) DK78880A (de)
FI (1) FI800540A (de)
NO (1) NO150615C (de)
SE (1) SE429682B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2448547A (en) * 2007-04-21 2008-10-22 Drax Power Ltd Electrical power generation using biomass
CN111076179A (zh) * 2019-11-04 2020-04-28 陕西威斯特高新技术投资有限公司 一种用于楼宇自动化垃圾处理装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114074004B (zh) * 2021-11-17 2023-02-24 江苏荣麒循环科技有限公司 一种基于物联网的废旧电子产品回收设备

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE95407C (de) *
GB191005562A (en) * 1910-03-05 1910-11-24 Arthur Walker Improvements in or relating to Roller Grinding Machines.
DE566117C (de) * 1931-12-18 1932-12-10 Ind Akt Ges Vorrichtung zum Regeln des Anpressdruckes der Mahlwalzen
US2241491A (en) * 1939-07-31 1941-05-13 Ronald Alfred Gilbert Machine for disintegrating solid and semisolid materials
FR923938A (fr) * 1946-03-18 1947-07-22 Du Pont Procédé et appareil de broyage pour matériaux fibreux
DE1126059B (de) * 1960-06-04 1962-03-22 Esslingen Maschf Aufgabevorrichtung fuer Muellverbrennungsoefen
DE1178543B (de) * 1960-01-20 1964-09-24 Walter Josef Martin Dipl Ing Einrichtung zum Zufuehren und Zerkleinern von Muell bei Muellverwertungs- oder Muell-verbrennungsanlagen
DE1225333B (de) * 1961-04-08 1966-09-22 Steinmueller Gmbh L & C Einrichtung zum Vorzerkleinern, Vortrocknen und gleichmaessigen Verteilen von Rohbraunkohle in den einer Braunkohlenmuehle vorgeschalteten Fallschacht
DE1227313B (de) * 1958-12-13 1966-10-20 Kloeckner Humboldt Deutz Ag Walzenbrecher mit UEberlastsicherung
US3480189A (en) * 1966-02-10 1969-11-25 Dow Chemical Co Fracturing of solid bodies
GB1320343A (en) * 1970-03-10 1973-06-13 Alvan Blanch Dev Co Ltd Attachment to be fitted to a roller mill to increase or decrease the nip between a pair of rollers of the roller mill
DE2519508A1 (de) * 1975-05-02 1976-11-18 Zwanger Karl A Gmbh Einstellvorrichtung fuer den abstand zwischen walzen
FR2329939A1 (fr) * 1975-10-31 1977-05-27 Goergen Fritz Procede et dispositif pour la preparation et l'incineration de dechets
DE2552431A1 (de) * 1975-11-22 1977-06-02 Krupp Gmbh Walzenbrecher

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE95407C (de) *
GB191005562A (en) * 1910-03-05 1910-11-24 Arthur Walker Improvements in or relating to Roller Grinding Machines.
DE566117C (de) * 1931-12-18 1932-12-10 Ind Akt Ges Vorrichtung zum Regeln des Anpressdruckes der Mahlwalzen
US2241491A (en) * 1939-07-31 1941-05-13 Ronald Alfred Gilbert Machine for disintegrating solid and semisolid materials
FR923938A (fr) * 1946-03-18 1947-07-22 Du Pont Procédé et appareil de broyage pour matériaux fibreux
DE1227313B (de) * 1958-12-13 1966-10-20 Kloeckner Humboldt Deutz Ag Walzenbrecher mit UEberlastsicherung
DE1178543B (de) * 1960-01-20 1964-09-24 Walter Josef Martin Dipl Ing Einrichtung zum Zufuehren und Zerkleinern von Muell bei Muellverwertungs- oder Muell-verbrennungsanlagen
DE1126059B (de) * 1960-06-04 1962-03-22 Esslingen Maschf Aufgabevorrichtung fuer Muellverbrennungsoefen
DE1225333B (de) * 1961-04-08 1966-09-22 Steinmueller Gmbh L & C Einrichtung zum Vorzerkleinern, Vortrocknen und gleichmaessigen Verteilen von Rohbraunkohle in den einer Braunkohlenmuehle vorgeschalteten Fallschacht
US3480189A (en) * 1966-02-10 1969-11-25 Dow Chemical Co Fracturing of solid bodies
GB1320343A (en) * 1970-03-10 1973-06-13 Alvan Blanch Dev Co Ltd Attachment to be fitted to a roller mill to increase or decrease the nip between a pair of rollers of the roller mill
DE2519508A1 (de) * 1975-05-02 1976-11-18 Zwanger Karl A Gmbh Einstellvorrichtung fuer den abstand zwischen walzen
FR2329939A1 (fr) * 1975-10-31 1977-05-27 Goergen Fritz Procede et dispositif pour la preparation et l'incineration de dechets
DE2552431A1 (de) * 1975-11-22 1977-06-02 Krupp Gmbh Walzenbrecher

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2448547A (en) * 2007-04-21 2008-10-22 Drax Power Ltd Electrical power generation using biomass
CN111076179A (zh) * 2019-11-04 2020-04-28 陕西威斯特高新技术投资有限公司 一种用于楼宇自动化垃圾处理装置

Also Published As

Publication number Publication date
JPS55142551A (en) 1980-11-07
SE429682B (sv) 1983-09-19
EP0015249A3 (de) 1980-09-17
DK78880A (da) 1980-08-23
FI800540A (fi) 1980-08-23
NO800506L (no) 1980-08-25
SE7901620L (sv) 1980-08-23
NO150615C (no) 1984-11-14
NO150615B (no) 1984-08-06

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