US20070137539A1 - Method for the removal of deposits on the internal walls of industrial furnaces of bunkers - Google Patents

Method for the removal of deposits on the internal walls of industrial furnaces of bunkers Download PDF

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Publication number
US20070137539A1
US20070137539A1 US11/605,084 US60508406A US2007137539A1 US 20070137539 A1 US20070137539 A1 US 20070137539A1 US 60508406 A US60508406 A US 60508406A US 2007137539 A1 US2007137539 A1 US 2007137539A1
Authority
US
United States
Prior art keywords
deposits
shell
cannon
industrial
bunkers
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.)
Abandoned
Application number
US11/605,084
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English (en)
Inventor
Anton Neumeir
Reinhard Effenberger
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.)
HNE Technologie AG
Original Assignee
HNE Technologie 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 HNE Technologie AG filed Critical HNE Technologie AG
Assigned to HNE TECHNOLOGIE AG reassignment HNE TECHNOLOGIE AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: EFFENBERGER, REINHARD, NEUMEIR, ANTON
Publication of US20070137539A1 publication Critical patent/US20070137539A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/0007—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by explosions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns
    • F41B11/60—Compressed-gas guns, e.g. air guns; Steam guns characterised by the supply of compressed gas
    • F41B11/62—Compressed-gas guns, e.g. air guns; Steam guns characterised by the supply of compressed gas with pressure supplied by a gas cartridge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns
    • F41B11/80—Compressed-gas guns, e.g. air guns; Steam guns specially adapted for particular purposes
    • F41B11/87—Compressed-gas guns, e.g. air guns; Steam guns specially adapted for particular purposes for industrial purposes, e.g. for surface treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B10/00—Means for influencing, e.g. improving, the aerodynamic properties of projectiles or missiles; Arrangements on projectiles or missiles for stabilising, steering, range-reducing, range-increasing or fall-retarding
    • F42B10/02—Stabilising arrangements
    • F42B10/04—Stabilising arrangements using fixed fins
    • F42B10/06—Tail fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
    • F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
    • F42B12/20—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect of high-explosive type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B6/00—Projectiles or missiles specially adapted for projection without use of explosive or combustible propellant charge, e.g. for blow guns, bows or crossbows, hand-held spring or air guns
    • F42B6/10—Air gun pellets ; Ammunition for air guns, e.g. propellant-gas containers

Definitions

  • the invention relates to a method for the removal of deposits from the internal walls of industrial furnaces or bunkers such as blast furnaces, cement ovens, waste incineration plants, coal-burning power plants or other plants such as large silos, bulk material bunkers, mixing bunkers, etc . . .
  • US 2004/0216698A1 discloses a method for removing deposits from the walls of ovens and similar apparatus wherein however no shells are shot at the oven walls covered with deposits. Rather explosives are detonated adjacent the deposits wherein at the same time a coolant, particularly water, is admitted via a hose to a sleeve extending around the explosives.
  • this method requires means for conducting the coolant to the sleeve and also sources of the coolant and furthermore the control of each individual explosion. This method is therefore complicated and is more expensive and relatively slow in comparison with the shooting method described above. It would appear therefore to be expedient to pursue a path of improving the shooting method.
  • the shells include an explosive charge and an impact detonator and are driven out of the cannon by compressed air so that their impact speed is controllable.
  • the weight of the industrial cannon can be substantially reduced and, more importantly the travel speed of the shells can be easily adjusted to the particular conditions by adjusting the air pressure used: For a larger travel distance of the shell or smaller deposit thickness, it can be reduced, that is, the exposure of the wall to the shell impact is controllable. Since, furthermore, the shells include only a percussion detonator and a relatively small explosive charge, the shell which is lighter than those used by the conventional industrial cannons still generates on impact a high energy for the destruction of deposits and their removal from the wall and those effects are spread over a relatively large area and not limited just to the cross-section of the shell as it occurs with the conventional ammunition which generates extremely high local pressures.
  • ring caking is formed on the drum wall which may have a thickness of up to 0.5 m and extends over several meters of drum length. With a drum diameter of about 5 m, the weight of such baked-on ring deposits may be in the area of several tons. Such enormous deposit volumes cannot economically be removed with a conventional industrial cannon or rather with the ammunition used thereby. If at all, it requires a bombardment with several thousand shells.
  • the rotational speed of the drum must be reduced whereby the production is slowed resulting in economic losses. Damage to the kiln wall may also occur. If the procedure is unsuccessful, the kiln has to be shut down and permitted to cool down in order to manually remove the baked on ring deposits. With the method according to the invention, the baked-on ring deposits can be shot off from a large distance (of about 50 m) with high targeting accuracy.
  • waste incineration plants the cleanup requirement for the industrial cannons are even more complex in that waste accumulations pushed and baked together in the incineration chamber must be shot into pieces.
  • slug deposits form in the incineration chamber with a thickness of up to 0.5 m. These slug accumulations then must be bombarded with cannon shells without damaging the underlying clay lining.
  • the slag generated in the combustion process is cooled by wetting it with water and the wet slag is transported to a slag bunker.
  • the slag sticks together or dries onto the walls while becoming hard like concrete.
  • the method according to the invention with which the slag can be accurately targeted for its removal, has been found to be remarkably effective.
  • slag deposits must be removed because of the enormous size of the furnace chambers.
  • slag deposits may have a thickness of only a few centimeters and that tube systems covered by the slag deposits which are used for the transfer of the heat out of the chamber, must not be damaged. Therefore the method according to the invention is particularly advantageous as the clean-up effect is caused by the explosion pressure wave generated by the explosion of the shells provided with impact detonators, not by the kinetic energy of the shell.
  • the air pressure used in the industrial cannon is about 20 bar.
  • an impact detonation shell with a weight of 100 g reaches a discharge speed of about 130 m/s (corresponding to about 130 km/h).
  • the pressure can be increased are reduced depending on a particular application in order to obtain a greater or smaller discharge speed of the shell or respectively, impact speed of the shell.
  • the pressure may be adjusted also in his respect.
  • the impact detonation shell may be equipped with different pyrotechnical or explosive contents depending on the purpose. Consequently, there is a widely variable adaptability possible with respect to the application and intended effect.
  • the effect of the shelling can be widely varied.
  • the shape and effect of the pressure wave generated is variable.
  • an arrangement can be provided by which a concentrated pressure wave with a large depth effect in the target area or a wider reaching, areal effect with lower surface pressure can be established.
  • the air-pressure operated industrial cannon may be compact and have a weight of only about 15 kg—including the shell. This is only about a sixth of the weight of a conventional industrial cannon using normal ammunition.
  • the industrial cannon according to the invention can therefore easily be transported and be set up in operating position and operated by one person.
  • the ammunition preferably consists of only three parts: a shell body, a cover and an impact detonator and, upon detonation, is divided only into these three parts.
  • the ammunition is therefore relatively safe as no shrapnel or pieces fly around in an uncontrolled manner upon detonation.
  • FIG. 1 is a perspective view of a shell with an impact detonator
  • FIG. 2 shows a compressed air-operated industrial cannon for shooting shells as shown in FIG. 1 ,
  • FIG. 3 is an axial cross-sectional view of the area of the cannon circled by a dash-dotted line in FIG. 2 , with a shell as shown in FIG. 1 disposed in the cannon.
  • FIG. 1 shows in a perspective view a shell 1 with an impact detonator for use in connection with the method according to the invention.
  • the shell has for example a diameter of 40 mm and a length of about 130 mm. It comprises a shell body 1 forming a shell sleeve with flight stabilization fins 2 , a cover 3 forming the front part and an impact detonator 4 disposed at the front end of the cover 3 .
  • the hollow space surrounded by shell body 1 and the cover 3 is filled with a charge of an explosive material or a pyrotechnical material.
  • FIG. 2 shows, in a side view, an industrial cannon for shooting shells as shown in FIG. 1 . It includes a barrel 11 , a shell chamber 12 at the rear end of the barrel 11 , which can be closed by an axially movable closure sleeve 13 , and a cannon body 14 with a rear carrying handle 13 and operating handles 16 as well as a compressed air connector 17 .
  • FIG. 3 shows the area of interest of the industrial cannon which is operated by compressed air from a compressed air bottle connected to the compressed air connector 17 by a hose.
  • the compressed air is supplied to the shell chamber 12 at the rear end of the barrel 11 .
  • the shell chamber 12 includes an opening 21 and an inner tube 22 which is movable forwardly together with the axially movable closure sleeve 13 in order to expose the opening 21 and to permit the insertion of the shell G.
  • the closure sleeve 13 and the inner tube 22 are in the retracted closing position and the shell G is in place that is the cannon is ready for use.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Furnace Details (AREA)
  • Cleaning In General (AREA)
  • Processing Of Solid Wastes (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Toys (AREA)
US11/605,084 2005-12-03 2006-11-27 Method for the removal of deposits on the internal walls of industrial furnaces of bunkers Abandoned US20070137539A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05026412A EP1793166B1 (de) 2005-12-03 2005-12-03 Verfahren zur Innenreinigung von Industrieöfen, Bunkern und dergleichen durch Beschuss mit Industriekanonen
EP05026412.6 2005-12-03

Publications (1)

Publication Number Publication Date
US20070137539A1 true US20070137539A1 (en) 2007-06-21

Family

ID=36001844

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/605,084 Abandoned US20070137539A1 (en) 2005-12-03 2006-11-27 Method for the removal of deposits on the internal walls of industrial furnaces of bunkers

Country Status (6)

Country Link
US (1) US20070137539A1 (de)
EP (1) EP1793166B1 (de)
AT (1) ATE397736T1 (de)
DE (1) DE502005004351D1 (de)
ES (1) ES2310315T3 (de)
PL (1) PL1793166T3 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013073776A1 (ko) * 2011-11-17 2013-05-23 주식회사 포스코 고로의 연소대 미연소 퇴적층 제거 장치 및 제거 방법
WO2018030585A1 (ko) * 2016-08-11 2018-02-15 주식회사 포스코 고로의 버드네스트 제거장치

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009041094A1 (de) 2009-07-27 2011-02-10 Rheinmetall Waffe Munition Gmbh Waffe, insbesondere reichweitengesteuerte Druckluftwaffe
DE102009039549A1 (de) 2009-09-01 2011-03-03 Rheinmetall Waffe Munition Gmbh Pneumatische Abschussvorrichtung
FR2955652B1 (fr) * 2010-01-28 2013-04-26 Jean Joseph Picq Arbalete projetant de la grenaille et des balles
JP5291046B2 (ja) * 2010-05-20 2013-09-18 株式会社神戸製鋼所 爆破処理用耐圧容器内の浄化方法
PL71026Y1 (pl) * 2018-11-29 2019-09-30 Pawliczak Krzysztof Zakl Mechaniki Precyzyjnej Zapech Krzysztof Pawliczak Lanca zdmuchiwacza sadzy
US11203047B1 (en) * 2020-10-20 2021-12-21 Diversitech Corporation Projectile launcher

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3134330A (en) * 1961-07-20 1964-05-26 Energa Projectile
US3505924A (en) * 1967-04-18 1970-04-14 Allied Res Ass Inc Silent mortar
US4798144A (en) * 1985-09-11 1989-01-17 Hoesch Aktiengesellschaft Hollow charge shell constructed as drill ammunition
US5769034A (en) * 1997-01-17 1998-06-23 Zilka; Frank Device, system and method for on-line explosive deslagging
US6786157B1 (en) * 1999-10-01 2004-09-07 Kevin Mark Powell Hollow charge explosive device particularly for avalanche control
US7185645B1 (en) * 2006-02-24 2007-03-06 Hne Technologie Ag Compressed air gun for use by police and firefighter for breaking doors open

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6755156B1 (en) * 1999-09-13 2004-06-29 Northamerican Industrial Services, Inc. Device, system and method for on-line explosive deslagging
AUPP033197A0 (en) * 1997-11-11 1997-12-04 Compri Technic Pty Ltd Automatic pneumatic projectile launcher
EP1362213B1 (de) * 2001-04-12 2004-12-15 Bang & Clean GmbH Verfahren und vorrichtung zum reinigen von verbrennungseinrichtungen
ITRM20010448A1 (it) * 2001-07-25 2003-01-25 Mario Martinez Procedimento per la pulizia dei tubi inteni del vapore e dell'acqua dei forni che bruciano carbone, immondizie e simili per la produzione di
AUPS170002A0 (en) * 2002-04-12 2002-05-16 Compri Tube Clean Pty Ltd Automatic pneumatic projectile launching system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3134330A (en) * 1961-07-20 1964-05-26 Energa Projectile
US3505924A (en) * 1967-04-18 1970-04-14 Allied Res Ass Inc Silent mortar
US4798144A (en) * 1985-09-11 1989-01-17 Hoesch Aktiengesellschaft Hollow charge shell constructed as drill ammunition
US5769034A (en) * 1997-01-17 1998-06-23 Zilka; Frank Device, system and method for on-line explosive deslagging
US6786157B1 (en) * 1999-10-01 2004-09-07 Kevin Mark Powell Hollow charge explosive device particularly for avalanche control
US7185645B1 (en) * 2006-02-24 2007-03-06 Hne Technologie Ag Compressed air gun for use by police and firefighter for breaking doors open

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013073776A1 (ko) * 2011-11-17 2013-05-23 주식회사 포스코 고로의 연소대 미연소 퇴적층 제거 장치 및 제거 방법
KR101318385B1 (ko) * 2011-11-17 2013-10-15 주식회사 포스코 고로의 연소대 미연소 퇴적층 제거 장치 및 제거 방법
CN104053793A (zh) * 2011-11-17 2014-09-17 Posco公司 去除高炉回旋区的未燃烧沉积层的装置及方法
JP2015502456A (ja) * 2011-11-17 2015-01-22 ポスコ 高炉の燃焼帯の未燃焼堆積層除去装置および除去方法
WO2018030585A1 (ko) * 2016-08-11 2018-02-15 주식회사 포스코 고로의 버드네스트 제거장치
CN109563557A (zh) * 2016-08-11 2019-04-02 株式会社Posco 高炉的鸟巢区清除装置

Also Published As

Publication number Publication date
ES2310315T3 (es) 2009-01-01
ATE397736T1 (de) 2008-06-15
PL1793166T3 (pl) 2008-12-31
EP1793166A1 (de) 2007-06-06
DE502005004351D1 (de) 2008-07-17
EP1793166B1 (de) 2008-06-04

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Legal Events

Date Code Title Description
AS Assignment

Owner name: HNE TECHNOLOGIE AG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NEUMEIR, ANTON;EFFENBERGER, REINHARD;REEL/FRAME:018649/0065

Effective date: 20061117

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION