EP0296188B1 - Verfahren und vorrichtung zum einbringen von zusatzstoffen in einen schacht- bzw. kupolofen - Google Patents

Verfahren und vorrichtung zum einbringen von zusatzstoffen in einen schacht- bzw. kupolofen Download PDF

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Publication number
EP0296188B1
EP0296188B1 EP88900009A EP88900009A EP0296188B1 EP 0296188 B1 EP0296188 B1 EP 0296188B1 EP 88900009 A EP88900009 A EP 88900009A EP 88900009 A EP88900009 A EP 88900009A EP 0296188 B1 EP0296188 B1 EP 0296188B1
Authority
EP
European Patent Office
Prior art keywords
additive
furnace
combustion air
shaft
stream
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
EP88900009A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0296188A1 (de
Inventor
Rolf Rietzscher
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.)
Georg Fischer AG
Original Assignee
Georg Fischer AG
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 Georg Fischer AG filed Critical Georg Fischer AG
Priority to AT88900009T priority Critical patent/ATE62339T1/de
Publication of EP0296188A1 publication Critical patent/EP0296188A1/de
Application granted granted Critical
Publication of EP0296188B1 publication Critical patent/EP0296188B1/de
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
    • F27B1/00—Shaft or like vertical or substantially vertical furnaces
    • F27B1/10—Details, accessories or equipment specially adapted for furnaces of these types
    • F27B1/16—Arrangements of tuyeres
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/001—Injecting additional fuel or reducing agents
    • C21B5/003—Injection of pulverulent coal

Definitions

  • the present invention relates to a method and a device for introducing at least one additive, in particular an energy source, into a shaft or Cupola furnace in which combustion air is blown into a furnace shaft via nozzles.
  • the invention also relates to the use of the method and the device for the purposes of disposal.
  • a method for introducing at least one additive, in particular an energy source, into a blast furnace is known.
  • the additive is fed into the combustion air flow and brought with it into the furnace shaft, the additive being sucked into the furnace by the combustion air by generating a negative pressure directly at the point of exit of the additive into the combustion air flow.
  • This condition can lead to blockages in the coal dust supply part.
  • the device proposed for carrying out the method according to claim 5 is characterized by at least one additional injector nozzle which is arranged in the feed line for the additive.
  • the figure shows a furnace wall 1 of a (not shown) shaft or cupola furnace, in which the fired material is fed in at the upper end of the shaft.
  • the fuel passes through the preheating zone, which is heated by the fuel gases, and finally reaches the combustion zone below.
  • a number of supply lines are arranged circumferentially in the combustion zone of the shaft, via which the combustion zone is supplied with hot air.
  • This hot air which also serves as an oxidizing agent, occurs very quickly, i.e. generally into the firing zone at a speed between 200 and 300 m / s.
  • An insert 2 preferably made of a metallic material with a through channel 2a, is arranged in the furnace wall 1.
  • An injector nozzle 7 is arranged in the supply duct 3. The injector nozzle 7 is charged with a provided additive via a feed pipe 4. It is an open funding system that works without the support of funding. Only a metering device, not shown, ensures the continuous supply of the additive.
  • An insert 5 is provided in the through channel 2a.
  • the passage cross section of the insert 5 widens from a smallest radius 6 to the openings 5a and 5b.
  • the end of the injector nozzle reaching into the furnace extends into the area of the narrowest cross-section of the through-channel of the insert 5.
  • a constant negative pressure is created under continuous flow conditions. This negative pressure leads to a suction effect, so the additive supplied via the injector nozzle 7 is, as it were, sucked out of the nozzle in the vacuum region. Since the speed of the hot wind flowing around the injector nozzle is increased in the area of the cross-sectional constriction, the additive is conveyed into the combustion zone of the furnace shaft at the speed of the hot wind.
  • the injector system 8 can have a plurality of nozzle arrangements in series, at least one nozzle arrangement working with external wind or assisted by compressed air and the compressed air being able to be preheated.
  • the suction system described can be operated continuously without problems and can also be loaded with different consistencies, such as fine dust and granules.
  • coal dust, granules up to a grain size of 10 mm can be used as additives.
  • the process also allows the use of problematic substances that have to be burned at certain temperatures so as not to pollute the environment with undesired emissions.
  • the use of the method and the device according to the invention can lead to a reduction in the conventional proportion of fuel, e.g. Coke, lead from 30% and more.
  • the system described is also suitable for the disposal of pollutants.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Compounds Of Unknown Constitution (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Blast Furnaces (AREA)
  • Manufacture Of Iron (AREA)
  • Processing Of Solid Wastes (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Friction Gearing (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Secondary Cells (AREA)
  • Catalysts (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
EP88900009A 1986-12-24 1987-12-23 Verfahren und vorrichtung zum einbringen von zusatzstoffen in einen schacht- bzw. kupolofen Expired - Lifetime EP0296188B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88900009T ATE62339T1 (de) 1986-12-24 1987-12-23 Verfahren und vorrichtung zum einbringen von zusatzstoffen in einen schacht- bzw. kupolofen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5186/86 1986-12-24
CH5186/86A CH674567A5 (enrdf_load_stackoverflow) 1986-12-24 1986-12-24

Publications (2)

Publication Number Publication Date
EP0296188A1 EP0296188A1 (de) 1988-12-28
EP0296188B1 true EP0296188B1 (de) 1991-04-03

Family

ID=4289366

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88900009A Expired - Lifetime EP0296188B1 (de) 1986-12-24 1987-12-23 Verfahren und vorrichtung zum einbringen von zusatzstoffen in einen schacht- bzw. kupolofen

Country Status (17)

Country Link
US (1) US5070797A (enrdf_load_stackoverflow)
EP (1) EP0296188B1 (enrdf_load_stackoverflow)
JP (1) JP2710374B2 (enrdf_load_stackoverflow)
KR (1) KR930000092B1 (enrdf_load_stackoverflow)
CN (1) CN1017083B (enrdf_load_stackoverflow)
AT (1) ATE62339T1 (enrdf_load_stackoverflow)
AU (2) AU8290987A (enrdf_load_stackoverflow)
CA (1) CA1337958C (enrdf_load_stackoverflow)
CH (1) CH674567A5 (enrdf_load_stackoverflow)
CZ (1) CZ285238B6 (enrdf_load_stackoverflow)
DD (1) DD279721A5 (enrdf_load_stackoverflow)
DE (1) DE3769142D1 (enrdf_load_stackoverflow)
HU (1) HU209806B (enrdf_load_stackoverflow)
NO (1) NO875372L (enrdf_load_stackoverflow)
PL (1) PL157931B1 (enrdf_load_stackoverflow)
SK (1) SK280698B6 (enrdf_load_stackoverflow)
WO (1) WO1988005149A1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19539634A1 (de) * 1995-10-25 1997-04-30 Hans Ulrich Feustel Einrichtung zum Einblasen von staubartigen und/oder körnigen reaktionsfähigen Stoffen und Stoffgemischen

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4310931C2 (de) * 1993-04-02 1999-04-15 Air Prod Gmbh Verfahren und Vorrichtung zum Entsorgen von Stäuben durch Verbrennen/Verschlacken in einem Kupolofen
DE59409998D1 (de) 1993-04-26 2002-01-17 Der Gruene Punkt Duales Syst Verfahren zur Erzeugung von Metall aus Metallerzen
CN1088818C (zh) * 1993-10-25 2002-08-07 邓和平 一种燃料燃烧方法及使用该方法的燃烧器
US5427604A (en) * 1993-12-03 1995-06-27 Amsted Industries Incorporated Alloy material addition method and apparatus for smelting and melting furnaces
AT407193B (de) * 1994-01-12 2001-01-25 Voest Alpine Ind Anlagen Einrichtung zum chargieren von körnigem einsatzgut in einen schmelzofen
US5816795A (en) * 1996-05-24 1998-10-06 Cadence Environmental Energy, Inc. Apparatus and method for providing supplemental fuel to a preheater/precalciner kiln
WO2004092644A1 (ja) * 1998-02-16 2004-10-28 Tadashi Gengo 微粉状燃料燃焼装置
DE19835271A1 (de) * 1998-08-04 2000-02-10 Linde Ag Verfahren zum Betreiben eines Schachtofens
DE19857306C2 (de) * 1998-12-14 2003-05-28 Eko Stahl Gmbh Verfahren und Vorrichtung zum Einblasen von festen Teilchen in einen Schachtofen
US20090064580A1 (en) * 2007-09-12 2009-03-12 Nicoll David H Venturi inserts, interchangeable venturis, and methods of fluidizing
FR3065330B1 (fr) 2017-04-13 2019-05-03 Tyco Electronics France Sas Outil pour souder un conducteur electrique avec un dispositif de connexion

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1433882A1 (de) * 1964-05-29 1969-01-09 Westofen Gmbh Verfahren zum Betreiben eines brennerbeheizten Schachtofens
FR1404306A (fr) * 1964-08-17 1965-06-25 Avco Corp Perfectionnements à la combustion de charbon pulvérisé
FR1495963A (fr) * 1966-10-06 1967-09-22 Babcock & Wilcox Co Brûleur
FR2131868A1 (en) * 1971-03-31 1972-11-17 Nippon Kokan Kk Blast furnace combustion
JPS49101027A (enrdf_load_stackoverflow) * 1973-01-29 1974-09-25
LU75449A1 (enrdf_load_stackoverflow) * 1976-07-23 1978-02-08
US4250816A (en) * 1976-12-16 1981-02-17 Pullman Incorporated, Pullman Swindell Division Particulate solid fuel combustion system
JPS5393828A (en) * 1977-01-24 1978-08-17 Aanesuto Aimusu Jieemusu Method of combining images and device therefor
JPS59501964A (ja) * 1982-08-09 1984-11-22 キスゼミ・イノヴエシオス・イロダ 三次元的再生のための視覚情報の記録及び再生方法並びに三次元画像の記録及び再生装置
JPS59202456A (ja) * 1983-05-03 1984-11-16 Toshio Masukane 立体視装置
GB8401866D0 (en) * 1984-01-25 1984-02-29 Babcock Power Ltd Monitoring of furnace operations
DE3436624A1 (de) * 1984-10-05 1986-04-10 Norddeutsche Affinerie AG, 2000 Hamburg Vorrichtung zur erzeugung zuendfaehiger feststoff/gas-suspensionen
US4655148A (en) * 1985-10-29 1987-04-07 Combustion Engineering, Inc. Method of introducing dry sulfur oxide absorbent material into a furnace
US4722287A (en) * 1986-07-07 1988-02-02 Combustion Engineering, Inc. Sorbent injection system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19539634A1 (de) * 1995-10-25 1997-04-30 Hans Ulrich Feustel Einrichtung zum Einblasen von staubartigen und/oder körnigen reaktionsfähigen Stoffen und Stoffgemischen
DE19539634C2 (de) * 1995-10-25 1999-06-10 Hans Ulrich Feustel Einrichtung zum Einblasen von staubartigen und/oder körnigen reaktionsfähigen Stoffen und Stoffgemischen

Also Published As

Publication number Publication date
HU209806B (en) 1994-11-28
CN1017083B (zh) 1992-06-17
JPH01501636A (ja) 1989-06-08
DD279721A5 (de) 1990-06-13
EP0296188A1 (de) 1988-12-28
WO1988005149A1 (en) 1988-07-14
SK979187A3 (en) 1998-09-09
CN87108358A (zh) 1988-07-06
CZ979187A3 (cs) 1999-06-16
US5070797A (en) 1991-12-10
SK280698B6 (sk) 2000-06-12
CA1337958C (en) 1996-01-23
DE3769142D1 (de) 1991-05-08
NO875372D0 (no) 1987-12-21
PL157931B1 (pl) 1992-07-31
AU8339287A (en) 1988-07-27
NO875372L (no) 1988-06-24
JP2710374B2 (ja) 1998-02-10
PL269691A1 (en) 1988-09-01
AU606642B2 (en) 1991-02-14
CZ285238B6 (cs) 1999-06-16
KR890700215A (ko) 1989-03-10
ATE62339T1 (de) 1991-04-15
KR930000092B1 (ko) 1993-01-08
CH674567A5 (enrdf_load_stackoverflow) 1990-06-15
AU8290987A (en) 1988-06-23

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