EP1987895A1 - Detonative Reinigungsvorrichtung - Google Patents

Detonative Reinigungsvorrichtung Download PDF

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Publication number
EP1987895A1
EP1987895A1 EP08251552A EP08251552A EP1987895A1 EP 1987895 A1 EP1987895 A1 EP 1987895A1 EP 08251552 A EP08251552 A EP 08251552A EP 08251552 A EP08251552 A EP 08251552A EP 1987895 A1 EP1987895 A1 EP 1987895A1
Authority
EP
European Patent Office
Prior art keywords
conduit
vessel
oxidizer
fuel
downstream
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Withdrawn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
EP08251552A
Other languages
English (en)
French (fr)
Inventor
Kirk R. Lupkes
John P. Harty
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.)
Raytheon Technologies Corp
Original Assignee
United Technologies Corp
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 United Technologies Corp filed Critical United Technologies Corp
Publication of EP1987895A1 publication Critical patent/EP1987895A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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
    • F23J3/02—Cleaning furnace tubes; Cleaning flues or chimneys
    • F23J3/023—Cleaning furnace tubes; Cleaning flues or chimneys cleaning the fireside of watertubes in boilers
    • 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
    • F27D1/1694—Breaking away the lining or removing parts thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G7/00—Cleaning by vibration or pressure waves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G7/00—Cleaning by vibration or pressure waves
    • F28G7/005—Cleaning by vibration or pressure waves by explosions or detonations; by pressure waves generated by combustion processes

Definitions

  • the disclosure relates to industrial equipment. More particularly, the disclosure relates to the detonative cleaning of industrial equipment.
  • Such equipment includes furnaces (coal, oil, waste, etc.), boilers, gasifiers, reactors, heat exchangers, and the like.
  • the equipment involves a vessel containing internal heat transfer surfaces that are subjected to fouling by accumulating particulate such as soot, ash, minerals and other products and byproducts of combustion, more integrated buildup such as slag and/or fouling, and the like.
  • particulate build-up may progressively interfere with plant operation, reducing efficiency and throughput and potentially causing damage.
  • Cleaning of the equipment is therefore highly desirable and is attended by a number of relevant considerations. Often direct access to the fouled surfaces is difficult. Additionally, to maintain revenue it is desirable to minimize industrial equipment downtime and related costs associated with cleaning.
  • a variety of technologies have been proposed.
  • a retractable pulsed detonation soot blower is discussed in Huque, Z. , et al., Quarterly Research Report (Reporting Period: 03/01/97 - 06/30/97) on Slag Characterization and Removal Using Pulse Detonation for Coal Gasification, DE-FG22-95MT95010, U.S. Department of Energy Pittsburgh Energy Technology Center, Pittsburgh, PA, 1997.
  • a vessel wall separates a vessel exterior from a vessel interior and has a wall aperture.
  • the apparatus comprises an elongate conduit having an upstream first end and a downstream second end.
  • the conduit is positioned to direct a shock wave from the second end into the vessel interior.
  • a source of fuel and oxidizer is coupled to the conduit to deliver the fuel and oxidizer to the conduit.
  • An initiator is positioned to initiate a combustion of the fuel and oxidizer.
  • the conduit comprises a first portion and a second portion downstream of the first portion. The second portion is extensible and contractible relative to the first portion to selectively position the second end at a desired location within the vessel.
  • the conduit downstream end comprises a centerbody positioned to direct the shock wave essentially axisymmetrically.
  • an actuator may be coupled to the conduit second portion to extend and contract the second portion relative to the first portion.
  • the second portion may be irrotatable (e.g., neither the actuator nor any other actuator being configured to rotate the second portion relative to the first portion about a longitudinal axis).
  • the centerbody may define an only outlet of the conduit.
  • the centerbody may be essentially axisymmetric and held by a plurality of struts.
  • the centerbody may have an upstream surface concave in central longitudinal section and essentially axisymmetric.
  • conduit downstream end comprises a centerbody positioned to direct the shock wave from an opening of essentially 360°.
  • Another aspect of the disclosure involves a method for cleaning a surface within such a vessel.
  • the shock wave is discharged from an opening essentially circumscribing an axis of the conduit between a centerbody and a portion of the conduit upstream of the centerbody.
  • FIG. 1 shows a furnace 20 having an associated soot blower 22 along a vessel (e.g., furnace) wall 24.
  • a vessel e.g., furnace
  • FIG. 1 shows a furnace 20 having an associated soot blower 22 along a vessel (e.g., furnace) wall 24.
  • Other configurations are possible (e.g., a group of soot blowers, one or more soot blowers on each of multiple levels, and the like).
  • the soot blower 22 includes an elongate combustion conduit 26 extending about/along an axis 500 from an upstream end 28 away from the furnace wall 24 to a downstream end 30 within the furnace interior 31.
  • combustion of a fuel/oxidizer mixture within the conduit 26 is initiated proximate the upstream end 28 (e.g., within an upstreammost 10% of a conduit length) to produce a detonation wave which is expelled from the downstream end as a shock wave along with associated combustion gases for cleaning surfaces within the interior.
  • the soot blower may be associated with a fuel/oxidizer source. Such source, or one or more components thereof, may be shared amongst the various soot blowers if multiple blowers are present.
  • An exemplary source includes a liquefied or compressed gaseous fuel cylinder 32 and an oxygen cylinder 34.
  • the oxidizer is a first oxidizer such as essentially pure oxygen.
  • a second oxidizer and/or a second fuel may be used (e.g., as discussed in US Patent 7011047 ).
  • Each exemplary source is coupled to the associated conduit 26 by appropriate plumbing (e.g., including valves 36 and 38). Alternatively, the source may premix the fuel and oxidizer upstream of the conduit (e.g.
  • the soot blower includes a spark box 40 connected to a sparkplug 42 for initiating combustion of the fuel oxidizer mixture and which, along with the source 32, is controlled by a control and monitoring system 44.
  • the exemplary conduit 26 is an extensible conduit having a proximal section 50 and a distal section 52 extensible and contractible (retractable) relative thereto.
  • a variety of extensible constructions are known from steam-operated soot blowers.
  • the exemplary upstream end 28 is along the section 50 and the exemplary downstream end 30 is along the section 52.
  • the section 50 further includes its own downstream end 54.
  • the section 52 further includes its own upstream end 56.
  • a seal 60 may be provided between the sections 50 and 52.
  • An actuator 62 may be provided for extending and retracting the downstream section 52.
  • the actuator 62 may comprise pneumatic, hydraulic, or electric position transducers or may include a powered carriage.
  • the upstream section 50 and the conduit as a whole may also be movable by other actuators or the like (not shown).
  • the exemplary section 52 includes the combination of a tube 70 and a centerbody 72 adjacent a downstream rim 74 of the tube 70.
  • the centerbody 72 includes a leading/upstream end/tip 76.
  • a downstream divergent sidewall 78 extends downstream from the tip 76 to an end face 80 having a periphery or rim 82.
  • the exemplary tip 76 is positioned slightly upstream of the rim 74.
  • the centerbody 72 is held by the tube 70 via a plurality of struts 90.
  • a radially-outward facing annular outlet opening 92 is formed between the rim 74 and the rim 82 of the centerbody.
  • the exemplary outlet 92 may be positioned adjacent the surfaces to be cleaned. In the illustrated embodiment, the outlet 92 is between a pair of two bundles 100 and 102 within the vessel interior 31.
  • FIG. 1 shows a relatively extended position whereas FIG. 2 shows a relatively contracted/retracted position.
  • the section 52 may be progressively extended or retracted between firing cycles or groups thereof.
  • Each firing causes a wave 110 with a deflagration-to-detonation transition to move down the conduit and be discharged from the outlet as an essentially axisymmetric shockwave 112.
  • a typical steam lance soot blower includes one or two discrete radial openings discharging steam
  • the relatively high available power afforded by detonation facilitates an essentially 360° discharge (e.g., with minor fluctuations likely caused by the presence of the struts occupying at most a small total of the circumference (e.g., less than 20%)).
  • struts may be of teardrop/streamlined cross-section.
  • FIG. 4 shows an alternate outlet 160 formed by a horn-like centerbody 162 and flared downstream tube downstream end portion 164.
  • FIG. 5 shows a non-axisymmetric outlet wherein the conduit downstream section splits into two branches with mirror image outlet openings 180 and 182.
  • the openings are thus axially aligned (i.e., as distinguished from axially/longitudinally spaced-apart) and diametrically opposed. Rather than produce an axisymmetric shockwave, a pair of opposite shockwaves are discharged.
  • the mirror image nature of the outlets provides a reaction force balance which would not be present with a single laterally directed outlet and which would be more balanced than with axially spaced-apart/offset openings.
  • Such mirror image openings may conveniently allow the conduit to be positioned between symmetric surfaces (e.g., tube bundles on respective sides of the conduit to clean both surfaces simultaneously).
  • the branched conduit of FIG. 5 may be configured to provide more locally intense shockwaves with longer-range effects than the axisymmetric embodiments. However, for full shockwave coverage, a rotation mechanism may be required to rotate the downstream section about its axis.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cleaning In General (AREA)
EP08251552A 2007-05-04 2008-04-29 Detonative Reinigungsvorrichtung Withdrawn EP1987895A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/800,329 US20080271685A1 (en) 2007-05-04 2007-05-04 Detonative cleaning apparatus

Publications (1)

Publication Number Publication Date
EP1987895A1 true EP1987895A1 (de) 2008-11-05

Family

ID=39673464

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08251552A Withdrawn EP1987895A1 (de) 2007-05-04 2008-04-29 Detonative Reinigungsvorrichtung

Country Status (3)

Country Link
US (1) US20080271685A1 (de)
EP (1) EP1987895A1 (de)
CN (1) CN101298969A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102322643A (zh) * 2011-08-12 2012-01-18 北京凡元兴科技有限公司 一种用压缩气体的气能脉冲吹灰器
DE102011015252A1 (de) * 2011-03-28 2012-10-04 Lufthansa Technik Ag Reinigungslanze und Verfahren zur Reinigung von Triebwerken
EP2548662A1 (de) * 2011-07-22 2013-01-23 Online Cleaning B.V. Vorrichtung und Verfahren zum Online-Reinigen von Installationen
GB2494517A (en) * 2011-09-07 2013-03-13 Bha Group Inc Pulse detonation device
US8651066B2 (en) 2010-09-28 2014-02-18 Bha Altair, Llc Pulse detonation cleaning system
WO2014094190A1 (de) * 2012-12-20 2014-06-26 Bang & Clean Gmbh Vorrichtung und verfahren zum reinigen von verbrennungseinrichtungen
WO2014121409A1 (de) * 2013-02-11 2014-08-14 Bang & Clean Gmbh Verfahren und vorrichtung zum reinigen von innenräumen von behältern und anlagen
CN107131512A (zh) * 2017-04-17 2017-09-05 江苏大学 一种可调声波吹灰器
JP2022073546A (ja) * 2020-11-02 2022-05-17 株式会社タクマ ガス供給システム、ガス供給方法、及びガス供給プログラム

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006041742A1 (de) * 2006-09-04 2008-03-06 Clyde Bergemann Gmbh Vorrichtung zur Reinigung von Hochdruckkesseln
US7987821B2 (en) * 2008-05-30 2011-08-02 General Electric Company Detonation combustor cleaning device and method of cleaning a vessel with a detonation combustor cleaning device
US8357215B2 (en) * 2009-03-04 2013-01-22 General Electric Company Method and apparatus of particulate removal from gasifier components
US8377232B2 (en) * 2009-05-04 2013-02-19 General Electric Company On-line cleaning of turbine hot gas path deposits via pressure pulsations
US8220420B2 (en) * 2010-03-19 2012-07-17 General Electric Company Device to improve effectiveness of pulse detonation cleaning
US8246751B2 (en) 2010-10-01 2012-08-21 General Electric Company Pulsed detonation cleaning systems and methods
US20130104929A1 (en) * 2011-10-26 2013-05-02 Bha Group, Inc. Portable boiler/scr online pinpoint pulse detonation cleaning device
CH709242A1 (de) * 2014-02-11 2015-08-14 Bang & Clean Gmbh Verfahren und Vorrichtung zum Reinigen von Innenräumen von Behältern und Anlagen mittels Explosionstechnologie.
US10520195B2 (en) * 2017-06-09 2019-12-31 General Electric Company Effervescent atomizing structure and method of operation for rotating detonation propulsion system
CN112974444B (zh) * 2018-07-26 2022-09-23 德州鲁斯泰铝业有限公司 一种柱状垃圾桶的空气爆炸清洗设备的使用方法
CN110102541A (zh) * 2019-06-10 2019-08-09 福建省中瑞装备制造科技有限公司 一种水泥库高效清洁系统

Citations (6)

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US1767281A (en) * 1925-04-15 1930-06-24 Remington Arms Co Inc Burning kiln
US5430691A (en) 1994-05-27 1995-07-04 Fridman; Igor Shock wave generator
US5494004A (en) 1994-09-23 1996-02-27 Lockheed Corporation On line pulsed detonation/deflagration soot blower
US20040107858A1 (en) 1997-01-17 2004-06-10 Northamerican Industrial Services, Inc. Device, System and Method for On-Line Explosive Deslagging
US20050112516A1 (en) 2003-11-20 2005-05-26 Aarnio Michael J. Detonative cleaning apparatus
US20060272684A1 (en) * 2005-06-01 2006-12-07 Steur Frans Jr Method of and apparatus for cleaning fouling in heat exchangers, waste-heat boilers and combustion chamgers

Patent Citations (7)

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Publication number Priority date Publication date Assignee Title
US1767281A (en) * 1925-04-15 1930-06-24 Remington Arms Co Inc Burning kiln
US5430691A (en) 1994-05-27 1995-07-04 Fridman; Igor Shock wave generator
US5494004A (en) 1994-09-23 1996-02-27 Lockheed Corporation On line pulsed detonation/deflagration soot blower
US20040107858A1 (en) 1997-01-17 2004-06-10 Northamerican Industrial Services, Inc. Device, System and Method for On-Line Explosive Deslagging
US20050112516A1 (en) 2003-11-20 2005-05-26 Aarnio Michael J. Detonative cleaning apparatus
US7011047B2 (en) 2003-11-20 2006-03-14 United Technologies Corporation Detonative cleaning apparatus
US20060272684A1 (en) * 2005-06-01 2006-12-07 Steur Frans Jr Method of and apparatus for cleaning fouling in heat exchangers, waste-heat boilers and combustion chamgers

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Title
"Journal of Engineering for Gas Turbines and Power", TRANSACTIONS OF THE ASME, vol. 1, no. 116, January 1994 (1994-01-01), pages 223 - 236

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8651066B2 (en) 2010-09-28 2014-02-18 Bha Altair, Llc Pulse detonation cleaning system
DE102011015252A1 (de) * 2011-03-28 2012-10-04 Lufthansa Technik Ag Reinigungslanze und Verfahren zur Reinigung von Triebwerken
EP2548662A1 (de) * 2011-07-22 2013-01-23 Online Cleaning B.V. Vorrichtung und Verfahren zum Online-Reinigen von Installationen
WO2013014097A1 (en) 2011-07-22 2013-01-31 Online Cleaning B.V. Device for and method of cleaning online installations
CN102322643A (zh) * 2011-08-12 2012-01-18 北京凡元兴科技有限公司 一种用压缩气体的气能脉冲吹灰器
GB2494517A (en) * 2011-09-07 2013-03-13 Bha Group Inc Pulse detonation device
GB2494517B (en) * 2011-09-07 2014-09-24 Bha Altair Llc Self driven rotating pulse detonation cleaning system
WO2014094190A1 (de) * 2012-12-20 2014-06-26 Bang & Clean Gmbh Vorrichtung und verfahren zum reinigen von verbrennungseinrichtungen
CH707256A1 (de) * 2012-12-20 2014-06-30 Bang & Clean Gmbh Vorrichtung und Verfahren zum Reinigen von Verbrennungseinrichtungen.
US9636717B2 (en) 2012-12-20 2017-05-02 Bang & Clean Gmbh Device and method for cleaning combustion devices
KR20160042806A (ko) * 2013-02-11 2016-04-20 방 운트 클린 게엠베하 탱크 및 시스템의 내부를 세정하기 위한 방법 및 장치
JP2016511688A (ja) * 2013-02-11 2016-04-21 バング・アンド・クリーン・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング タンクおよびシステムの内部を洗浄するための方法および装置
WO2014121409A1 (de) * 2013-02-11 2014-08-14 Bang & Clean Gmbh Verfahren und vorrichtung zum reinigen von innenräumen von behältern und anlagen
AU2014214477B2 (en) * 2013-02-11 2017-12-21 Bang & Clean Gmbh Method and device for cleaning interiors of tanks and systems
US10065220B2 (en) 2013-02-11 2018-09-04 Bang & Clean Gmbh Method and device for cleaning interiors of tanks and systems
EA031744B1 (ru) * 2013-02-11 2019-02-28 Бэнг Энд Клин Гмбх Способ и устройство очистки внутренних полостей резервуаров и установок
JP2019195808A (ja) * 2013-02-11 2019-11-14 バング・アンド・クリーン・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング タンクおよびシステムの内部を洗浄するための方法および装置
EP3753641A1 (de) * 2013-02-11 2020-12-23 Bang & Clean GmbH Vorrichtung zum reinigen von innenräumen von behältern und anlagen
CN107131512A (zh) * 2017-04-17 2017-09-05 江苏大学 一种可调声波吹灰器
CN107131512B (zh) * 2017-04-17 2019-01-08 江苏大学 一种可调声波吹灰器
JP2022073546A (ja) * 2020-11-02 2022-05-17 株式会社タクマ ガス供給システム、ガス供給方法、及びガス供給プログラム

Also Published As

Publication number Publication date
CN101298969A (zh) 2008-11-05
US20080271685A1 (en) 2008-11-06

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