EP1226881A2 - Verfahren und Vorrichtung zur Reinigung von Oberflächen in Hohlräumen - Google Patents
Verfahren und Vorrichtung zur Reinigung von Oberflächen in Hohlräumen Download PDFInfo
- Publication number
- EP1226881A2 EP1226881A2 EP02001145A EP02001145A EP1226881A2 EP 1226881 A2 EP1226881 A2 EP 1226881A2 EP 02001145 A EP02001145 A EP 02001145A EP 02001145 A EP02001145 A EP 02001145A EP 1226881 A2 EP1226881 A2 EP 1226881A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- tube
- cavities
- oxygen
- gas mixture
- 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.)
- Granted
Links
Images
Classifications
-
- 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
-
- 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
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
-
- 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
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
-
- 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
-
- 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
- F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
- F27D25/006—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag using explosives
-
- 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
-
- 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
- F27D25/00—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag
- F27D25/001—Devices or methods for removing incrustations, e.g. slag, metal deposits, dust; Devices or methods for preventing the adherence of slag comprising breaking tools, e.g. hammers, drills, scrapers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/15—Composition, conformation or state of the charge characterised by the form of the articles
- F27M2001/1539—Metallic articles
- F27M2001/1547—Elongated articles, e.g. beams, rails
- F27M2001/1556—Tubes or cylindrical bodies
Definitions
- the present invention relates to a method and a Device for cleaning surfaces e.g. of pipes and Pipe walls by burning an explosive acetylene and oxygen-containing gas mixture.
- a classic method of cleaning surfaces that Easily accessible is through the surfaces Sandblasting and tapping from the agglomerated and optionally also clean sintered or other caking. This involves a lot of effort and means in all in cases where the surfaces to be cleaned have a operating system, such as one Waste incineration plant, that are connected to this plant and has to stand still during cleaning, what with a very high additional cost is associated.
- a cleaning method is known from US-A-4 089 702 of surfaces of cavities that are difficult to access, such as the surfaces inside a valve, known which the cleaning by combustion and detonation of a in the gas mixture located in the cavity or by introducing it the detonation is brought into the cavity.
- US-A-4 089 702 also an acetylene-oxygen gas mixture.
- the object of the present invention is therefore a method and to provide a device that is simple and safely cleaning even large surfaces in closed rooms, e.g. Boiler systems, enable.
- the solution to this problem is a method for cleaning Surfaces in cavities by burning an explosive Gas mixture containing acetylene and oxygen, characterized in that the acetylene and oxygen containing gas mixture in a closed container is presented and ignited.
- the pre-filled container with the Gas mixture in the immediate vicinity of the contaminants on the Surfaces are brought.
- the ignition can then, for example by an electrical spark inside the container be brought about.
- the ignition of even if there is a pollution at the location the temperature is relatively high such as in Exhaust gas flow from a waste incineration plant with temperatures of approx. 700 ° C to 800 ° C, so that the container material is under decomposes or melts with the high temperatures subsequent explosion of the gas mixture under the influence of high temperature.
- the ignition of the explosive acetylene-oxygen gas mixture can also be removed from the place of pollution or contamination.
- the container is in submitted to a pipe and by an electrical spark, for example generated by a spark plug, ignited and over the pipe directed the pressure wave to the place of contamination.
- the detonation wave causes the Impurities and soiling from the surfaces jump off, chip off or crumble.
- the impurities can then be tapped, Shaking, suctioning or, as in the case of waste incineration plants, a gas stream can be removed.
- the process is therefore suitable for cleaning surfaces in the Inside of various objects, however, is special suitable for large areas.
- Inner tube walls can be both variants of the invention Process are used. If the cavity is too small to to introduce a gas bubble, preferably the detonation passed into the cavity.
- Gas mixtures can be used for the process according to the invention that, for example, only from pure gases Acetylene and oxygen exist.
- a mixture of 1.0 to 1.4 Parts by volume oxygen to 1 part by volume acetylene as it used in oxyacetylene welding is preferred.
- Acetylene-air mixtures can also be used.
- the container can be made of any materials, which has sufficient elasticity to fill the gas mixture have sufficient resistance to the respective ambient temperatures are and a sufficient have low gas permeability. Are particularly suitable plastic foils for this.
- Polyethylene film can be used, preferably with a thickness of 50 to 150 microns, especially about 100 microns.
- Polyethylene film is also used at high temperatures, such as for example 800 ° C, a period of a few seconds Provided in which the gas bubble in the desired location can be placed before the sheath melts and it comes to ignition of the gas mixture. So here it is too it is not necessary to switch off a system that is in operation.
- the detonation wave causing the cleaning decreases relatively quickly over a distance of a few meters.
- a gas mixture must therefore be ignited at intervals of approximately 1 to 2 meters, depending on the degree of contamination, if necessary also several times.
- the volume of the container is therefore relatively independent of the surface to be cleaned.
- the volume of the container is usually 5 to 10 liters for a surface to be cleaned of approximately 1 to 4 m 2 , in particular approximately 3 m 2 , and correspondingly smaller for a smaller surface.
- Another object of the invention is a device for Implementation of the method according to the invention with a tube, that has a closable and an open end, and with an ignition device and a gas filling device, the both through the closable end into the interior of the tube can be introduced.
- the pipe for example a steel pipe can be, but also made of a different material can be sufficiently stable to withstand the arising Withstand pressures, and a diameter of, for example 50-200 mm, in particular 100-120 mm and particularly preferably approx. 114 mm, preferably has one at its open end Flange on. This can be connected to an attachment which closes one end of the tube.
- This attachment can be integrated contain an ignition device and a gas filling device. If the container is on the tube side of the attachment, for example in the form of a polyethylene gas bubble and with a sealing tape gastight around the ignition and Gas filling device closed and then the attachment connected to the flange, for example screwed, so can be carried out in the next step through the gas filling line has a valve control, either an acetylene and Oxygen-containing gas mixture or the two gas components be fed separately to the container.
- a valve control either an acetylene and Oxygen-containing gas mixture or the two gas components be fed separately to the container.
- a pre-dimensioned polyethylene film container in volume filled so far that a slight overpressure arises.
- the tube can now be positioned so that the open end of the pipe itself in the immediate vicinity of the surface to be cleaned.
- By igniting the gas mixture can trigger the explosion and detonate over the Pipe to be carried to the place of contamination.
- a baffle is arranged at the open end of the tube, which results in the side exit of the pressure wave.
- a protective shield is also preferred on the pipe assemble, as this still ensures safety for the operator is further increased.
- a compressed air connection for Flushing may be provided on the pipe. The incoming compressed air leads to cooling and therefore extends the period of time for positioning the pipe is available.
- Another object of the invention is the use of a explosive gas mixture, the acetylene and oxygen contains and is in a sealed container, for cleaning surfaces inside cavities.
- the steel tube 10 with its two ends 12 and 14 and a diameter of 114 mm.
- the ignition device extends through the attachment 15 22 and gas filling device 24.
- the gas filling device 24 has a valve 25 and a gas line 26, by the acetylene and oxygen or air, respectively storage bottles, not shown, can be filled.
- the ignition device 22 and Gas filling device 24 placed a polyethylene gas bubble 20, which is sealed gas-tight with a sealing tape 28.
- the ignition device 22 is in Figure 1 is a spark plug with two parallel electrical Cables. With the spark plug this becomes explosive The mixture is ignited in a known manner. The Detonation is then carried out at the open end 14 of the tube 10, passing through the baffle 16 to the side Exit is forced. Finally, the is shown Protective shield 18 which in the direction of the open end 14 of the Tube 10 is attached and serves to protect the operator. To extend the time of positioning, a Compressed air connection 27 used with a valve 29 through which Compressed air from a storage bottle, not shown, into the tube 10 is initiated.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Cleaning In General (AREA)
- Apparatuses For Bulk Treatment Of Fruits And Vegetables And Apparatuses For Preparing Feeds (AREA)
- Non-Alcoholic Beverages (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
- Cleaning Or Drying Semiconductors (AREA)
Abstract
Description
Claims (11)
- Verfahren zur Reinigung von Oberflächen in Hohlräumen durch Verbrennung eines explosionsfähigen Acetylen und Sauerstoff enthaltenden Gasgemisches,
dadurch gekennzeichnet, daß
das Acetylen und Sauerstoff enthaltende Gasgemisch in einem abgeschlossenen Behältnis (20) vorgelegt und gezündet wird. - Verfahren nach Anspruch 1, dadurch gennzeichnet, daß das Behältnis (20) aus einer Kunststoffolie gefertigt ist.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Oberflächen Rohre und Rohrwände von Dampferzeugern oder Wärmetauschern sind.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Behältnis (20) im Inneren der zu reinigenden Hohlräume angeordnet wird.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Zündung durch elektrische Funken im Inneren des Behältnisses (20) oder durch externe Temperatureinwirkung nach zumindest partiellem Schmelzen des Behältnisses (20) erfolgt.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Behältnis (20) ausserhalb der zu reinigenden Hohlräume in einem Rohr (10) angeordnet wird und das Rohr (10) in das Innere der zu reinigenden Hohlräume reicht.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß die Zündung durch elektrische Funken im Inneren des Behältnisses (20) erfolgt.
- Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 6 oder 7 mit einem Rohr (10), das ein verschließbares Ende (12) und ein offenes Ende (14) hat, und mit einer Zündeinrichtung (22) und einer Gaseinfülleinrichtung (24), die beide durch das verschließbare Ende (12) in das Innere des Rohres (10) einführbar sind.
- Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß das Rohr (10) an seinem offenen Ende (14) ein Ablenkblech (16) aufweist.
- Vorrichtung nach Anspruch 8 oder 9, dadurch gekennzeichnet, daß an dem Rohr (10) ein Schutzschild (18) angebracht ist.
- Verwendung eines explosionsfähigen Gasgemisches, das Acetylen und Sauerstoff enthält und sich in einem abgeschlossenem Behältnis (20) befindet, zur Reinigung von Oberflächen in Hohlräumen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10103214 | 2001-01-25 | ||
DE10103214A DE10103214B4 (de) | 2001-01-25 | 2001-01-25 | Verfahren und Vorrichtung zur Reinigung von Oberflächen in Hohlräumen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1226881A2 true EP1226881A2 (de) | 2002-07-31 |
EP1226881A3 EP1226881A3 (de) | 2004-04-14 |
EP1226881B1 EP1226881B1 (de) | 2006-05-17 |
Family
ID=7671653
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02001145A Expired - Lifetime EP1226881B1 (de) | 2001-01-25 | 2002-01-25 | Verfahren und Vorrichtung zur Reinigung von Oberflächen in Hohlräumen |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1226881B1 (de) |
AT (1) | ATE326294T1 (de) |
DE (2) | DE10103214B4 (de) |
DK (1) | DK1226881T3 (de) |
ES (1) | ES2263694T3 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1544567A2 (de) | 2003-12-19 | 2005-06-22 | Inno Industrial Engineering Ltd. | Verfahren und Vorrichtung zur Reinigung von Verschmutzungen in Wärmetauschern, Abhitzekesseln und Brennkammern |
US7959432B2 (en) | 2005-06-01 | 2011-06-14 | Frans Steur, Senior | Method of and apparatus for cleaning fouling in heat exchangers, waste-heat boilers and combustion chambers |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018115277B4 (de) | 2017-06-30 | 2022-05-25 | Buchen KraftwerkService GmbH | Vorrichtung und Verfahren zum Lockern, Aufbrechen und Lösen von unerwünschten Materialansammlungen in industriellen thermischen Anlagen |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2494298A (en) * | 1945-12-20 | 1950-01-10 | Floyd D Jones | Device for opening clogged lubrication fitting passages |
US3934303A (en) * | 1974-08-29 | 1976-01-27 | Neithercutt Marvin C | Explosive torch tip cleaner tool |
US4089702A (en) * | 1974-12-20 | 1978-05-16 | Nitro Nobel Ab | Method of cleaning internal surfaces employing an explosive gas |
FR2445186A1 (fr) * | 1978-12-29 | 1980-07-25 | Magyar Aluminium | Procede et charge explosive notamment pour enlever des depots dans des tuyauteries et appareils chimiques |
DE3600100C1 (en) * | 1986-01-04 | 1987-04-09 | Schubert Werner | Pipe cleaning device for removing coarse soiling |
US5082502A (en) * | 1988-09-08 | 1992-01-21 | Cabot Corporation | Cleaning apparatus and process |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6321690B1 (en) * | 1997-01-17 | 2001-11-27 | North American Industrial Services, Inc. | Device, system and method for on-line explosive deslagging |
US5769034A (en) * | 1997-01-17 | 1998-06-23 | Zilka; Frank | Device, system and method for on-line explosive deslagging |
-
2001
- 2001-01-25 DE DE10103214A patent/DE10103214B4/de not_active Expired - Fee Related
-
2002
- 2002-01-25 EP EP02001145A patent/EP1226881B1/de not_active Expired - Lifetime
- 2002-01-25 ES ES02001145T patent/ES2263694T3/es not_active Expired - Lifetime
- 2002-01-25 DK DK02001145T patent/DK1226881T3/da active
- 2002-01-25 DE DE50206772T patent/DE50206772D1/de not_active Expired - Lifetime
- 2002-01-25 AT AT02001145T patent/ATE326294T1/de active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2494298A (en) * | 1945-12-20 | 1950-01-10 | Floyd D Jones | Device for opening clogged lubrication fitting passages |
US3934303A (en) * | 1974-08-29 | 1976-01-27 | Neithercutt Marvin C | Explosive torch tip cleaner tool |
US4089702A (en) * | 1974-12-20 | 1978-05-16 | Nitro Nobel Ab | Method of cleaning internal surfaces employing an explosive gas |
FR2445186A1 (fr) * | 1978-12-29 | 1980-07-25 | Magyar Aluminium | Procede et charge explosive notamment pour enlever des depots dans des tuyauteries et appareils chimiques |
DE3600100C1 (en) * | 1986-01-04 | 1987-04-09 | Schubert Werner | Pipe cleaning device for removing coarse soiling |
US5082502A (en) * | 1988-09-08 | 1992-01-21 | Cabot Corporation | Cleaning apparatus and process |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1544567A2 (de) | 2003-12-19 | 2005-06-22 | Inno Industrial Engineering Ltd. | Verfahren und Vorrichtung zur Reinigung von Verschmutzungen in Wärmetauschern, Abhitzekesseln und Brennkammern |
EP1544567A3 (de) * | 2003-12-19 | 2008-10-22 | Online Cleaning B.V. | Verfahren und Vorrichtung zur Reinigung von Verschmutzungen in Wärmetauschern, Abhitzekesseln und Brennkammern |
EP2383534A1 (de) | 2003-12-19 | 2011-11-02 | Online Cleaning B.V. | Verfahren und Vorrichtung zur Reinigung von Verschmutzungen in Wärmetauschern, Abhitzekesseln und Brennkammern |
EP2682706A1 (de) | 2003-12-19 | 2014-01-08 | Online Cleaning B.V. | Verfahren und Vorrichtung zur Reinigung von Verschmutzungen in Wärmetauschern, Abhitzekesseln und Brennkammern |
US7959432B2 (en) | 2005-06-01 | 2011-06-14 | Frans Steur, Senior | Method of and apparatus for cleaning fouling in heat exchangers, waste-heat boilers and combustion chambers |
Also Published As
Publication number | Publication date |
---|---|
DE50206772D1 (de) | 2006-06-22 |
ATE326294T1 (de) | 2006-06-15 |
ES2263694T3 (es) | 2006-12-16 |
DE10103214B4 (de) | 2006-06-29 |
EP1226881A3 (de) | 2004-04-14 |
EP1226881B1 (de) | 2006-05-17 |
DE10103214A1 (de) | 2002-08-14 |
DK1226881T3 (da) | 2006-09-11 |
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