EP0236550B1 - Installation pour l'extraction des fumées et la réduction du bruit de fours métallurgiques, en particulier de fours à arc - Google Patents

Installation pour l'extraction des fumées et la réduction du bruit de fours métallurgiques, en particulier de fours à arc Download PDF

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Publication number
EP0236550B1
EP0236550B1 EP86115005A EP86115005A EP0236550B1 EP 0236550 B1 EP0236550 B1 EP 0236550B1 EP 86115005 A EP86115005 A EP 86115005A EP 86115005 A EP86115005 A EP 86115005A EP 0236550 B1 EP0236550 B1 EP 0236550B1
Authority
EP
European Patent Office
Prior art keywords
cell
fresh air
furnace
supply air
furnaces
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.)
Expired - Lifetime
Application number
EP86115005A
Other languages
German (de)
English (en)
Other versions
EP0236550A2 (fr
EP0236550A3 (en
Inventor
Horst Dipl.-Ing. Willaschek
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.)
MAN Gutehoffnungshutte GmbH
Original Assignee
MAN Gutehoffnungshutte GmbH
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 MAN Gutehoffnungshutte GmbH filed Critical MAN Gutehoffnungshutte GmbH
Publication of EP0236550A2 publication Critical patent/EP0236550A2/fr
Publication of EP0236550A3 publication Critical patent/EP0236550A3/de
Application granted granted Critical
Publication of EP0236550B1 publication Critical patent/EP0236550B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
    • F27B3/10—Details, accessories, or equipment peculiar to hearth-type furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
    • F27D17/003—Extraction of waste gases, collection of fumes and hoods used therefor of waste gases emanating from an electric arc furnace

Definitions

  • the invention relates to a system for smoke evacuation and soundproofing of metallurgical furnaces, in particular electric arc furnaces, consisting of a cell provided with smoke gas suction devices and closable openings surrounding the furnace, supply air being supplied to the cell interior above the furnace platform from outside the cell.
  • the purpose of the so-called electric furnace housing is to dedust the electric furnace during each operating phase and at the same time to keep the noise level low.
  • the housing encloses the electric furnace as a cell, or the part of the crane runway located in the furnace area can also be enclosed by the housing.
  • the housings have closable openings in the side walls that are used for charging the furnace. If necessary, a roof flap for moving the crane in and out is also arranged.
  • the walls of the cell are lined with sound-absorbing materials.
  • a flue gas extraction system is connected to the housing and the flue gases generated in the housing are extracted via this and then filtered in a dedusting system.
  • the flue gas extraction system is expediently equipped with a swirl control, or the extraction fan itself is speed-controlled, so that adaptation to the flue gases occurring in different amounts during the individual operating phases of the furnace can take place.
  • the location and size of the supply air openings are difficult to predict and can only be experimentally determined with considerable financial expense on the model or object, namely the housing itself. Last but not least, this is difficult on the property itself because the inner walls of the housing are clad with soundproofing material.
  • the object of the invention is therefore to provide a device with the aid of which it is possible to Provide a simple and controlled supply of supply air in a simple way by retrofitting, which supports the extraction of the flue gases from the cell and avoids gas recirculation within the housing.
  • This task is carried out in a system for smoke evacuation and sound insulation of metallurgical furnaces, i.e. a cell surrounding the furnace according to the preamble of the main claim, solved in that channels provided with supply air outlet openings are provided in the interior of the cell above the furnace. These ducts are adjustable in height and, if necessary, laterally adjustable and the supply air is fed to the ducts via fans.
  • the amount and concentration of flue gases fluctuate considerably when a metallurgical furnace is operated.
  • the largest amounts of flue gas occur when charging the furnace and when adding alloys and additives, while the flue gas accumulation during the melting phase and during refining is much lower or can be extracted more selectively and dedusted.
  • the installation of the supply air system according to the invention in the cell does not require large opening cross sections in the wall of the cell, since only a relatively small opening for the supply air line needs to be created from outside the cell into the cell interior.
  • the supply air fan is arranged outside of the cell on its outer wall on a bracket and the actual supply air duct is mounted in the interior of the cell in such a way that it can be displaced in height and appropriately. If necessary, removable soundproofing panels can be arranged between the supply air duct and the inner wall of the cell.
  • the supply air volume can be regulated via louvre flaps located in the supply air outlet openings of the supply air ducts or via the speed of the supply air fan.
  • the supply air volume regulation can be controlled depending on the particular operating situation of the furnace.
  • the supply air can be controlled manually by the condition staff. However, it can also be controlled using known electrical control units as a function of the quantity setting of the exhaust fan.
  • the supply air volume control can also be controlled via a known flue gas density measuring device (e.g. with a photocell).
  • the supply air quantity can also be set via a pressure measuring device, the supply air quantity being increased or reduced, depending on the pressure within the cell.
  • the housing (cell 3) shown in the schematic figures completely encloses the electric arc furnace (1). Below the furnace stage (10), the tapping pan (2) is indicated (in Fig. 2).
  • the walls and ceiling of the cell (3) are lined with sound-absorbing material.
  • side gates On two opposite side walls of the cell (3) there are side gates, namely the side gate (5a) as an entry opening for scrap baskets and the side gate (5b) as an entry opening for the tapping pan (2).
  • the crane runway (11) is located outside the cell (3).
  • the suction line (6) can be seen below the roof of the cell (3). It leads to a suction and dust removal system (not shown).
  • the supply air system is installed on the cell side wall opposite the suction line (6). Outside the cell (3) there is a supply air fan (8) on a console. This fan pushes fresh air from outside the cell through a supply air nozzle into the supply air duct (7) inside the cell.
  • This supply air duct extends over a large part of the width of the cell wall and has on its longitudinal side facing the opposite cell wall (not shown) air outlet openings, the opening cross section of which can be changed with the aid of louvre flaps.
  • the supply air duct is vertically and expediently displaceable, i.e. its position can be varied by moving for example mounting rails (9) or the like.
  • the supply air duct (7) can be fastened here, for example, by screw connections.
  • the space around the passage opening in the cell wall which is intended to allow the supply air duct to be displaced in height and to the side, can be covered by plates made of soundproofing material, on which the fastening rails (9) are arranged.
  • the supply air duct (7) is located on the cell wall opposite the suction line (6). If, due to the local conditions, it turns out that the supply air duct is cheaper to place at another location on the inner walls of the cells, the supply air system is arranged at the relevant location.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)

Claims (4)

  1. Installation pour aspiration de gaz de fumée et insonorisation de fours métallurgiques, en particulier de fours électriques à arc, se composant d'une enceinte entourant le four, munie de dispositifs d'aspiration du gaz de fumée et d'ouvertures verrouillables, dans laquelle de l'air provenant de l'extérieur de l'enceinte est envoyé dans l'intérieur de celle-ci au-dessus de la plate-forme du four, caractérisée en ce que dans l'intérieur de l'enceinte sont prévus des canaux (7) munis d'orifices de sortie de l'air amené, canaux qui sont réglables en hauteur et éventuellement latéralement et auxquels l'air est envoyé par des ventilateurs (8).
  2. Installation selon la revendication 1, caractérisée en ce que le volume d'air peut être réglé par modification de la vitesse de rotation du ventilateur.
  3. Installation selon les revendications 1 et 2, caractérisée en ce que le volume d'air alimenté peut être réglé par modification de la section de passage des orifices de sortie d'air des canaux (7).
  4. Installation selon les revendications 1 à 3, caractérisée en ce que la régulation du volume d'air est commandée en fonction de la situation du moment dans le processus de travail du four.
EP86115005A 1986-02-06 1986-10-29 Installation pour l'extraction des fumées et la réduction du bruit de fours métallurgiques, en particulier de fours à arc Expired - Lifetime EP0236550B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3603654 1986-02-06
DE19863603654 DE3603654A1 (de) 1986-02-06 1986-02-06 Anlage zur rauchgasabsaugung und schalldaemmung von metallurgischen oefen, insbesondere elektrolichtbogenoefen

Publications (3)

Publication Number Publication Date
EP0236550A2 EP0236550A2 (fr) 1987-09-16
EP0236550A3 EP0236550A3 (en) 1989-03-08
EP0236550B1 true EP0236550B1 (fr) 1991-05-02

Family

ID=6293513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86115005A Expired - Lifetime EP0236550B1 (fr) 1986-02-06 1986-10-29 Installation pour l'extraction des fumées et la réduction du bruit de fours métallurgiques, en particulier de fours à arc

Country Status (2)

Country Link
EP (1) EP0236550B1 (fr)
DE (2) DE3603654A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103394495A (zh) * 2013-07-04 2013-11-20 广西玉柴机器股份有限公司 隔音除尘装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2313660C3 (de) * 1973-03-20 1981-09-10 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen Mehrschiffige Strahlerzeugungsanlage mit einem oder mehreren Elektrolichtbogenöfen
US4088824A (en) * 1976-11-08 1978-05-09 Obenchain Corporation Electric furnace station noise and smoke pollution control system
US4477910A (en) * 1983-04-07 1984-10-16 The Bahnson Company Fumes control system for electric arc furnaces

Also Published As

Publication number Publication date
EP0236550A2 (fr) 1987-09-16
DE3603654A1 (de) 1987-08-13
EP0236550A3 (en) 1989-03-08
DE3679058D1 (de) 1991-06-06

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