EP0302551A2 - Verfahren und Vorrichtung zum Behandeln von festen Stadtabfällen - Google Patents

Verfahren und Vorrichtung zum Behandeln von festen Stadtabfällen Download PDF

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Publication number
EP0302551A2
EP0302551A2 EP88201582A EP88201582A EP0302551A2 EP 0302551 A2 EP0302551 A2 EP 0302551A2 EP 88201582 A EP88201582 A EP 88201582A EP 88201582 A EP88201582 A EP 88201582A EP 0302551 A2 EP0302551 A2 EP 0302551A2
Authority
EP
European Patent Office
Prior art keywords
materials
grinding
wastes
mill
grid
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Withdrawn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
EP88201582A
Other languages
English (en)
French (fr)
Other versions
EP0302551A3 (de
Inventor
Vincenzo Lagana
Angelo Bassetti
Angiolo Farneti
Carlo Giommi
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.)
SnamProgetti SpA
Original Assignee
SnamProgetti SpA
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 SnamProgetti SpA filed Critical SnamProgetti SpA
Publication of EP0302551A2 publication Critical patent/EP0302551A2/de
Publication of EP0302551A3 publication Critical patent/EP0302551A3/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/007—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls specially adapted for disintegrating refuse
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/04—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with unperforated container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/183—Feeding or discharging devices
    • B02C17/1835—Discharging devices combined with sorting or separating of material
    • B02C17/1855—Discharging devices combined with sorting or separating of material with separator defining termination of crushing zone, e.g. screen denying egress of oversize material

Definitions

  • the present invention relates to the treatment of solid urban wastes and to the relevant equipment; in particular, the present invention is concerned with a process and an equipment suitable for grinding, homogenizing and blending the solid urban wastes.
  • the solid urban wastes are generally constituted by a mixture of non-homogeneous substances.
  • they comprise the fermentable organic matter, plastics, paper, metals, lithoidal materials, glasses, and so forth.
  • the solid wastes undergo a grinding inside hammer mills or inside aerated rotary drums (biostabilizers) wherein the wastes remain for some days; the treated materials are subsequently submitted to sieving steps by means of rotary drum sieves, vibrating sieves, and so forth.
  • the obtained organic matter has such a particle size, as not to make it possible an efficacious microbial attack to be carried out.
  • the process of the present invention is accomplished by using a single equipment, which makes it possible the grinding, the homogenising and the sorting of the solid urban wastes to be carried out as one single step.
  • the equipment used in the process of treatment of the solid urban wastes according to the invention is constituted by a rotary drum mill, fitted with a system for the separation of the ground and homogenised materials from the coarse materials, commonly denominated as poor-grindability materials.
  • the grinding device is constituted by a cylindrical, horizontal, continuously-operating mill equipped with grinding bodies.
  • the grinding bodies the mill is equipped with are constituted by bars.
  • the grinding-body mill acts in a selective way on the biodegradable organic matter, which is finely ground and homogenized, whilst the hard plastic matters are left unchanged and can be easily separated from the biodegradable matter.
  • the fine plastic material is only broken, and also it can be separated from the fermentable organic material.
  • glass, and the lithoidal materials are finely ground and homogenized with the fermentable material.
  • the grinding-body mill is fitted with a system for the continuous separation of the processed materials.
  • the horizontal-body mill is provided with a wall perpendicular to the revolution axis, which is constituted by a grid which allows the finely ground material (the fermentable organic material), but not the plastic materials (poor-grindability materials), to pass through.
  • a diaphragm is provided, which enables all materials submitted to grinding, but not the grinding bodies, to pass through.
  • the coarser materials can be submitted to a further sieving, in order to separate the entrained finer materials, in an equipment outside the grinding-body mill.
  • the grinding-body mill is indicated, wherein such a mill has a cylindrical shape, with a base diameter longer than the cylinder height.
  • the diaphragm is indicated, which makes it possible the ground material, but not the grinding bodies, to pass through, wherein said grinding bodies can be constituted by cylinders or balls made from a high-hardness metal material.
  • the grid is indicated, which makes it possible the finely ground material to pass through, with the coarse material being retained.
  • the finely ground material leaves the mill through the duct 4 coaxial with the axis of the mill, whilst poor-grindability materials flow through the inner duct 5 to the rotary sieve 6 wherein they are separated from the entrained fine materials, and are discharged through the line 7.
  • baffles are installed inside the air gaps between the diaphragm and the grid, and between the grid and the discharge head, baffles are installed, which convey the material towards the axis of the mill and towards the discharge thereof.
  • biodegradable, finely ground organic matter After the grinding of the wastes, amounts of biodegradable, finely ground organic matter can be recovered, which are comprised within the range of from 50 to 60%.
  • the organic substances recovered and separated from the poor-grindability materials can be submitted to the biological processes of composting or of anaerobic digestion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Processing Of Solid Wastes (AREA)
  • Crushing And Grinding (AREA)
  • Disintegrating Or Milling (AREA)
  • Fertilizers (AREA)
EP88201582A 1987-08-07 1988-07-21 Verfahren und Vorrichtung zum Behandeln von festen Stadtabfällen Withdrawn EP0302551A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8721619A IT1228926B (it) 1987-08-07 1987-08-07 Procedimento e apparecchiatura per il trattamento di rifiuti solidi urbani
IT2161987 1987-08-07

Publications (2)

Publication Number Publication Date
EP0302551A2 true EP0302551A2 (de) 1989-02-08
EP0302551A3 EP0302551A3 (de) 1990-01-10

Family

ID=11184417

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88201582A Withdrawn EP0302551A3 (de) 1987-08-07 1988-07-21 Verfahren und Vorrichtung zum Behandeln von festen Stadtabfällen

Country Status (3)

Country Link
EP (1) EP0302551A3 (de)
JP (1) JPS6451184A (de)
IT (1) IT1228926B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4995561A (en) * 1989-02-23 1991-02-26 Nakaya Jitsugyo Co., Ltd. Ground sand maker
EP0876844A3 (de) * 1997-05-06 1999-05-12 Hans Dr.-Ing. Friedmann Vorrichtung und Verfahren zur Aufbereitung von Abfällen
RU2185884C2 (ru) * 2000-09-27 2002-07-27 Закрытое акционерное общество "Биофит", ЛТД. Барабанная мельница
FR2964576A1 (fr) * 2010-09-13 2012-03-16 Alfyma Ind Installation perfectionnee de traitement de dechets
EP2907577A1 (de) * 2014-02-13 2015-08-19 Geisberger Gesellschaft für Energieoptimierung mbH Vorrichtung für Biogasanlagen zum Zerkleinern und Zermahlen von Flüssig-Feststoffgemischen
CN111013797A (zh) * 2019-12-17 2020-04-17 谭尚平 一种滑落过程中避免碎片卡机的易拉罐粉碎机装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB251564A (en) * 1925-08-29 1926-05-06 Peter Vilhelm Adolf Aage Herbs Improvements relating to tube or ball mills
DE499880C (de) * 1928-03-16 1930-06-14 Chr Pfeiffer UEberfuehrungskammer mit Siebvorrichtung fuer Verbundtrommelmuehlen
DE501537C (de) * 1928-09-16 1930-07-03 Act Ges Vorm Wagner & Co Masch Kugel- und Stangenmuehle
DE2254844A1 (de) * 1972-11-09 1974-05-22 Loesche Kg Verfahren und einrichtung zur aufbereitung von muell
ZA79394B (en) * 1978-02-27 1980-02-27 Smidth & Co As F L Grinding tube mill

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4995561A (en) * 1989-02-23 1991-02-26 Nakaya Jitsugyo Co., Ltd. Ground sand maker
EP0876844A3 (de) * 1997-05-06 1999-05-12 Hans Dr.-Ing. Friedmann Vorrichtung und Verfahren zur Aufbereitung von Abfällen
RU2185884C2 (ru) * 2000-09-27 2002-07-27 Закрытое акционерное общество "Биофит", ЛТД. Барабанная мельница
FR2964576A1 (fr) * 2010-09-13 2012-03-16 Alfyma Ind Installation perfectionnee de traitement de dechets
WO2012035249A1 (fr) 2010-09-13 2012-03-22 Alfyma Industrie Installation perfectionnée de traitement de déchets
EP2907577A1 (de) * 2014-02-13 2015-08-19 Geisberger Gesellschaft für Energieoptimierung mbH Vorrichtung für Biogasanlagen zum Zerkleinern und Zermahlen von Flüssig-Feststoffgemischen
CN111013797A (zh) * 2019-12-17 2020-04-17 谭尚平 一种滑落过程中避免碎片卡机的易拉罐粉碎机装置
CN111013797B (zh) * 2019-12-17 2021-09-07 李恒赳 一种滑落过程中避免碎片卡机的易拉罐粉碎机装置

Also Published As

Publication number Publication date
IT1228926B (it) 1991-07-10
JPS6451184A (en) 1989-02-27
IT8721619A0 (it) 1987-08-07
EP0302551A3 (de) 1990-01-10

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