EP0874196A2 - Verfahren und Vorrichtung zum Entfernen von Ablagerungen in und an Zuführungsdüsen oder Zuführungsrohren von Feuerungsanlagen - Google Patents
Verfahren und Vorrichtung zum Entfernen von Ablagerungen in und an Zuführungsdüsen oder Zuführungsrohren von Feuerungsanlagen Download PDFInfo
- Publication number
- EP0874196A2 EP0874196A2 EP98105977A EP98105977A EP0874196A2 EP 0874196 A2 EP0874196 A2 EP 0874196A2 EP 98105977 A EP98105977 A EP 98105977A EP 98105977 A EP98105977 A EP 98105977A EP 0874196 A2 EP0874196 A2 EP 0874196A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- feed
- medium
- deposits
- lance
- nozzles
- 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
- 238000002485 combustion reaction Methods 0.000 title claims description 27
- 238000000034 method Methods 0.000 title claims description 20
- 238000009434 installation Methods 0.000 title 1
- 239000007921 spray Substances 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 12
- 238000009826 distribution Methods 0.000 claims description 2
- 239000003595 mist Substances 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 1
- 239000003546 flue gas Substances 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 239000003570 air Substances 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005422 blasting Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
- F23L9/02—Passages or apertures for delivering secondary air for completing combustion of fuel by discharging the air above the fire
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2203/00—Furnace arrangements
- F23G2203/101—Furnace arrangements with stepped or inclined grate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2900/00—Special features of, or arrangements for incinerators
- F23G2900/00001—Exhaust gas recirculation
Definitions
- the invention relates to a method for removal of deposits in and on feed nozzles or feed pipes of combustion plants in which recirculated Exhaust gas that is fed back into a combustion chamber will fix these deposits, taking care of the deposits applied a liquid or vapor medium becomes.
- the invention also relates to a device for carrying it out of the procedure.
- exhaust gas after a certain cooling (e.g. in a steam generator) or the exhaust gas from the appropriate areas Withdrawn from the combustion chamber and via feed nozzles or feed pipes fed back into the combustion chamber.
- the reasons for the recirculation of exhaust gas can in the pursuit a high thermal efficiency of the plant, in the generation particularly high turbulence in the area of the secondary combustion zone, in exploiting the still in the exhaust existing oxygen and for regulating the oxygen content be seen in the secondary combustion zone.
- the exhaust gas is preferably after one of the heat use downstream exhaust gas cleaning system, e.g. the dedusting device, deducted. But it can also be from the can be taken from the rear of the combustion chamber, in which there is already largely burnt out fuel and therefore the exhaust gases are still relatively high Have oxygen content.
- the feed nozzles or feed pipes which are also for the Supply of secondary air can serve in the area of their Outlet opening through deposits originating from the exhaust gas, be gradually added so that at certain time intervals these deposits need to be removed to keep the free Outlet cross section of the feed nozzles or feed pipes restore. So far, the removal of Deposits mechanically by knocking off or repelling them by means of appropriate poles, which is not only tedious and is time-consuming, but is therefore also unsatisfactory, because the extremely strongly adhering deposits only from the firebox forth can be completely removed what the parking and cooling of the affected system.
- This Deposits occur in the area of the mouth of the feed nozzles or feed pipes both inside these feed nozzles and feed pipes as well as on the immediate outer surfaces adjacent to the mouth. you will be caused by the strong heat radiation from the firebox, taking this heat radiation to a glazing of the deposits in the part of the furnace facing the furnace Baking and thus a particularly good adhesion and resistant structure that leads in a mechanical way is difficult to destroy.
- the object of the invention is a method and an apparatus provide with the help of which it is possible to remove these deposits in a simple way during normal operation to remove the combustion system practically residue-free.
- liquid medium sprayed onto the deposits in droplet form is that the medium in the flow direction of the exhaust gases inside the feed nozzles or feed pipes starting with that in the flow direction of the exhaust gases within of the feed nozzles or the feed pipes leading edge the deposits are applied to them.
- a liquid medium in particular Water
- the liquid Medium quickly penetrates the inside of the deposits.
- heat from the combustion chamber or from the circulated Gas flow evaporates this into the pores of the hygroscopic Deposits of water explosive.
- the deposits are blown up from the inside. This will not only remove the deposits on the inner wall the feed nozzles or the feed pipes removed, but also around the mouth area to the outside.
- the task at the beginning can also be solved in that the vaporous medium in Direction of flow of the exhaust gases within the feed nozzles or the feed pipes starting with that in the direction of flow the exhaust gases inside the supply nozzles or the feed pipes front edge of the deposits is applied to this. It is crucial indicates that the vaporous medium after its penetration a rapid increase in volume in the pores of the deposits learns what is the case when the vapor Medium is water vapor. When using water vapor Expect a longer treatment time (a few minutes up to about 1 hour) because of the increase in the specific volume when the temperature rises is significantly lower than, for example when using water.
- the application of the medium in the direction of flow of the exhaust gases inside the feed nozzles and especially at the front Edge of the deposits has the advantage that the medium, preferably Water, deposits reached inside the Feed nozzle or the feed pipe and the still have a rough and porous surface because they are against the heat radiation from the combustion chamber through the feed nozzle or the feed pipe is better protected as deposits on the outside of the feed nozzle or of the feed pipe, where due to the strong heat glazing of these deposits occurs.
- the medium can therefore start at a point where it is still easy to get into the deposits can penetrate with the explained Explosives begin, which then move towards the Mouth of the feed nozzle or the feed pipe to to the outside of the feed nozzle or the feed pipe continues.
- the droplets By supplying the liquid medium by means of a supply nozzle in droplet form, the droplets being so have a small size so that the medium is sprayed on, becomes a uniform wetting of the surface of the deposits achieved with relatively low media consumption. Excess medium will escape from the Feed nozzles or the feed pipes largely avoided, so that an impairment of the combustion in There is no combustion chamber due to excessively large quantities of medium escaping. It is particularly advantageous if the liquid medium in fine distribution as a droplet mist on the deposits is applied.
- the medium is concentric with the feed nozzle or is fed to the feed pipe.
- the cone angle of the medium veil can range from 10 ° to Be adjustable by 180 °.
- the medium pressure in particular the water pressure is the pressure of a public water supply network corresponds and is preferably 6 bar. It is beneficial when both the pressure and the amount as well the feeding time and the duration between two medium feeding phases are adjustable.
- a device for carrying out the method is identified by a lance with a medium connection, into the interior of a feed nozzle or tube for recirculated exhaust gas from a combustion system can be used, the lance at its front free end carries a nozzle head.
- the application of the invention requires in most cases no special additional effort, since existing ones Systems in the rear area of the feed nozzles or feed pipes lying in the axial direction of the same Have stubs for importing rods to help with these rods to remove the deposits. About these The lances can cut into the interior of the feed nozzles or feed lines are introduced. Training a nozzle head at the free end of the lance makes it possible Apply medium finely distributed on the deposits. Here it is again advantageous if the spray angle of the nozzle head is adjustable to adapt the trained Make medium veils to the present circumstances to be able to.
- the lance inside the feed nozzle or the feed pipe in is kept displaceable in the longitudinal direction, so is an adjustment of the medium outlet to the respective places where there are deposits.
- the medium emerging from the nozzle head of the advancing Track cleaning effect within the feed nozzle is possible.
- a controllable valve device for Opening and shutting off the medium supply to regulate the Medium pressure and the amount of medium and to regulate the Opening times and the intervals between two opening phases is connected to a control device.
- FIG. 1 shows a furnace with a feed hopper 1 with subsequent chute 2 for the task of Firing goods on a feed table 3, on the loading piston 4 are provided to the coming from the feed chute Put the firing material on a grate 5.
- a total designated 6 device provided for the supply of primary combustion air.
- exhaust gas is re-introduced sucked into the firebox.
- a suction opening 12 is provided, from which a suction line 13 extends into which a fan 14 is used.
- a line 15 connected to the amount of exhaust gas extracted feeds a ring line 16 from the so-called secondary air nozzles 17 are fed via which the exhaust gas extracted is returned to the combustion chamber 7.
- FIGS. 2 and 3 there is 18 in the wall the combustion chamber 7 within a niche 19 of the same Feed nozzle or a feed tube 20 is used, wherein the feed nozzle 20 via a flange connection 21 connected to a total of 22 designated manifold is.
- the manifold has an aligned one hand the feed nozzle 20 aligned tube 23 and another Tube 24 on that with the ring line 16 for the returned Exhaust gas is connected.
- a closure cover 25 is provided, in the center of a holding device 26 for a Lance 27 is provided.
- the holding device 26 is in the Able to receive the lance 27 displaceably in its longitudinal direction.
- a nozzle head 28 intended.
- a valve device 29 is arranged at the rear end of the lance 27, to which a water supply line in the form of a Hose 30 is flanged.
- the valve device 29 stands via a line 31 to a control device 32 in connection, which is able to supply water to the lance 27 regulate in terms of pressure and quantity and also shut off and open the valve device 29, whereby also the time intervals between the opening phases and the Length of the opening phases set by the control device 32 can be.
- the nozzle head 28 provided at the front end of the lance 27 allows water to be sprayed out in the form of a conical Water curtain, the cone angle is adjustable.
- This water curtain is in figure with dash-dotted lines 3 indicated and provided with the reference number 33.
- dashed lines Lines 34 depict deposits that are both inside the feed nozzle as well as on the outside thereof occur when exhaust gas from the supply nozzle 20 is blown into the combustion chamber 7. The length of time in which Such deposits form depends on the composition of the exhaust gas and also depending on whether only exhaust gas or exhaust gas mixed with ambient air via the feed nozzles 20 is introduced into the combustion chamber 7.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Incineration Of Waste (AREA)
- Cleaning In General (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
- Gasification And Melting Of Waste (AREA)
- Nozzles For Spraying Of Liquid Fuel (AREA)
- Air Supply (AREA)
- Processing Of Solid Wastes (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Physical Vapour Deposition (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
Description
- Figur 1:
- einen Schnitt durch eine schematisch dargestellte Feuerungsanlage mit Zuführdüsen für rezirkuliertes Abgas;
- Figur 2:
- einen vergrößerten Ausschnitt einer Wand eines Feuerraumes mit eingesetzten Zuführungsdüsen; und
- Figur 3:
- einen Schnitt durch eine Zuführungsdüse mit einer erfindungsgemäßen Reinigungsvorrichtung in vergrößertem Maßstab.
Claims (14)
- Verfahren zum Entfernen von Ablagerungen in und an Zuführungsdüsen oder Zuführungsrohren von Feuerungsanlagen, bei welchen sich aus rezirkuliertem Abgas, das einem Feuerraum wieder zugeführt wird, diese Ablagerungen festsetzen, wobei auf die Ablagerungen ein flüssiges Medium aufgebracht wird, dadurch gekennzeichnet, daß das flüssige Medium in Tröpfchenform auf die Ablagerungen aufgesprüht wird, daß das Medium in Strömungsrichtung der Abgase innerhalb der Zuführungsdüsen oder Zuführungsrohre beginnend mit dem in Strömungsrichtung der Abgase innerhalb der Zuführungsdüsen oder der Zuführungsrohre vorderen Rand der Ablagerungen auf diese aufgebracht wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das flüssige Medium in feiner Verteilung als Tröpfchennebel auf die Ablagerungen aufgebracht wird.
- Verfahren zum Entfernen von Ablagerungen in und an Zuführungsdüsen oder Zuführungsrohren von Feuerungsanlagen, bei welchen sich aus rezirkuliertem Abgas, das einem Feuerraum wieder zugeführt wird, diese Ablagerungen festsetzen, wobei auf die Ablagerungen ein dampfförmiges Medium aufgebracht wird, dadurch gekennzeichnet, daß das dampfförmige Medium in Strömungsrichtung der Abgase innerhalb der Zuführungsdüsen oder der Zuführungsrohre beginnend mit dem in Strömungsrichtung der Abgase innerhalb der Zuführungsdüsen oder der Zuführungsrohre vorderen Rand der Ablagerungen auf diese aufgebracht wird.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das flüssige Medium Wasser ist.
- Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß das dampfförmige Medium Wasserdampf ist.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Medium konzentrisch zur Zuführungsdüse oder zum Zuführungsrohr zugeführt wird.
- Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß das Medium in Form eines kegelförmigen Schleiers zugeführt wird.
- Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß der Kegelwinkel des Mediumschleiers von 10° bis 180° einstellbar ist.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der Druck des flüssigen Mediums dem Druck eines öffentlichen Wasserversorgungsnetzes entspricht und vorzugsweise bei 6 bar liegt.
- Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß sowohl der Mediumdruck und die Mediummenge als auch die Zuführungszeit und die Dauer zwischen zwei Mediumzuführungsphasen regelbar sind.
- Vorrichtung zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 10, gekennzeichnet durch eine einen Mediumanschluß aufweisende Lanze (27), die in das Innere einer Zuführungsdüse (20) oder eines Zuführungsrohres für rezirkuliertes Abgas einer Feuerungsanlage einsetzbar, wobei die Lanze (27) an ihrem vorderen freien Ende einen Düsenkopf (28) trägt.
- Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, daß der Sprühwinkel des Düsenkopfes (28) einstellbar ist.
- Vorrichtung nach Anspruch 11 oder 12, dadurch gekennzeichnet, daß die Lanze (27) im Inneren der Zuführungsdüse (20) oder des Zuführungsrohres in Längsrichtung verschiebbar gehalten (26) ist.
- Vorrichtung nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, daß in der Zuführungsleitung (30) zur Lanze (27) eine regelbare Ventileinrichtung (29) vorgesehen ist, die zum Öffnen und Absperren der Mediumzufuhr, zur Regelung des Mediumdruckes und der Mediummenge sowie zur Regelung der Öffnungszeiten und der Abstände zwischen zwei Öffnungsphasen mit einer Regeleinrichtung (32) in Verbindung steht.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19717378 | 1997-04-24 | ||
DE19717378A DE19717378A1 (de) | 1997-04-24 | 1997-04-24 | Verfahren und Vorrichtung zum Entfernen von Ablagerungen in und an Zuführungsdüsen oder Zuführungsrohren von Feuerungsanlagen |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0874196A2 true EP0874196A2 (de) | 1998-10-28 |
EP0874196A3 EP0874196A3 (de) | 1999-11-03 |
EP0874196B1 EP0874196B1 (de) | 2002-10-23 |
Family
ID=7827652
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98105977A Expired - Lifetime EP0874196B1 (de) | 1997-04-24 | 1998-04-01 | Verfahren und Vorrichtung zum Entfernen von Ablagerungen in und an Zuführungsdüsen oder Zuführungsrohren von Feuerungsanlagen |
Country Status (17)
Country | Link |
---|---|
US (1) | US6105590A (de) |
EP (1) | EP0874196B1 (de) |
JP (1) | JP2868761B2 (de) |
AT (1) | ATE226706T1 (de) |
BR (1) | BR9801429A (de) |
CA (1) | CA2234804C (de) |
CZ (1) | CZ288190B6 (de) |
DE (2) | DE19717378A1 (de) |
DK (1) | DK0874196T3 (de) |
ES (1) | ES2184159T3 (de) |
NO (1) | NO312982B1 (de) |
PL (1) | PL191420B1 (de) |
PT (1) | PT874196E (de) |
RU (1) | RU2143087C1 (de) |
SG (1) | SG75832A1 (de) |
TW (1) | TW346533B (de) |
UA (1) | UA41463C2 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001086206A1 (de) * | 2000-05-08 | 2001-11-15 | Erik Riedel | Verfahren zur ablagerungsbeseitigung in brennräumen thermischer anlagen während des laufenden betriebs |
EP2447607A1 (de) * | 2010-10-28 | 2012-05-02 | Wgm-Waste Gasification & Melting Sa | Apparat zum Lösen von festen Verbrennungsrückständen im Innern von Verbrennungs- oder Vergasungsöfen |
CN104595882A (zh) * | 2015-01-19 | 2015-05-06 | 浙江徐氏厨房设备有限公司 | 燃气蒸汽发生器除垢装置 |
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Publication number | Priority date | Publication date | Assignee | Title |
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DE102004060884A1 (de) * | 2004-12-17 | 2006-06-29 | Clyde Bergemann Gmbh | Verfahren und Vorrichtung zum Entfernen von Verbrennungsrückständen mit unterschiedlichen Reinigungsmedien |
US8381690B2 (en) | 2007-12-17 | 2013-02-26 | International Paper Company | Controlling cooling flow in a sootblower based on lance tube temperature |
JP5352096B2 (ja) * | 2008-02-29 | 2013-11-27 | 三菱重工環境・化学エンジニアリング株式会社 | 燃焼炉及び堆積物除去機構 |
JP5535506B2 (ja) * | 2009-03-23 | 2014-07-02 | 三菱重工環境・化学エンジニアリング株式会社 | ストーカ式焼却炉のノズル清掃装置 |
CN101876447B (zh) * | 2010-07-01 | 2012-10-10 | 中国石油化工股份有限公司 | 一种吹灰器 |
GB201312870D0 (en) * | 2013-07-18 | 2013-09-04 | Charlton & Jenrick Ltd | Fire constructions |
US9541282B2 (en) | 2014-03-10 | 2017-01-10 | International Paper Company | Boiler system controlling fuel to a furnace based on temperature of a structure in a superheater section |
PL3172520T3 (pl) | 2014-07-25 | 2019-07-31 | International Paper Company | System i sposób określania lokalizacji zanieczyszczenia na powierzchni przenoszenia ciepła kotła |
US9927231B2 (en) * | 2014-07-25 | 2018-03-27 | Integrated Test & Measurement (ITM), LLC | System and methods for detecting, monitoring, and removing deposits on boiler heat exchanger surfaces using vibrational analysis |
CN105750256A (zh) * | 2016-05-14 | 2016-07-13 | 淮安美妙电子科技有限公司 | 一种可预排气的高压清洗机 |
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WO1995028602A1 (fr) * | 1994-04-18 | 1995-10-26 | Maejima Kogyosho Co., Ltd. | Dispositif de nettoyage pour prises de ventilation dans un incinerateur |
JPH08247403A (ja) * | 1995-03-15 | 1996-09-27 | Mitsubishi Heavy Ind Ltd | スートブロワの暖機方法 |
DE19527237A1 (de) * | 1995-07-26 | 1997-01-30 | Lurgi Lentjes Babcock Energie | Vorrichtung zum Reinigen von staubbeladenem Gas |
FR2742858B1 (fr) * | 1995-12-22 | 1998-03-06 | Framatome Sa | Procede et dispositif de nettoyage d'une plaque tubulaire d'un echangeur de chaleur depuis l'interieur du faisceau de l'echangeur de chaleur |
CH691873A5 (de) * | 1995-12-27 | 2001-11-15 | Mbt Holding Ag | Verfahren und Einrichtung zum Beschichten von Tunnelinnenwänden mit Spritzbeton. |
-
1997
- 1997-04-24 DE DE19717378A patent/DE19717378A1/de active Pending
-
1998
- 1998-03-31 TW TW087104817A patent/TW346533B/zh not_active IP Right Cessation
- 1998-04-01 DE DE59806011T patent/DE59806011D1/de not_active Expired - Lifetime
- 1998-04-01 DK DK98105977T patent/DK0874196T3/da active
- 1998-04-01 ES ES98105977T patent/ES2184159T3/es not_active Expired - Lifetime
- 1998-04-01 EP EP98105977A patent/EP0874196B1/de not_active Expired - Lifetime
- 1998-04-01 AT AT98105977T patent/ATE226706T1/de active
- 1998-04-01 PT PT98105977T patent/PT874196E/pt unknown
- 1998-04-02 SG SG1998000687A patent/SG75832A1/en unknown
- 1998-04-03 US US09/055,081 patent/US6105590A/en not_active Expired - Lifetime
- 1998-04-14 CA CA002234804A patent/CA2234804C/en not_active Expired - Lifetime
- 1998-04-22 NO NO19981805A patent/NO312982B1/no not_active IP Right Cessation
- 1998-04-22 UA UA98042030A patent/UA41463C2/uk unknown
- 1998-04-23 BR BR9801429A patent/BR9801429A/pt not_active IP Right Cessation
- 1998-04-23 JP JP10113704A patent/JP2868761B2/ja not_active Expired - Lifetime
- 1998-04-23 PL PL325947A patent/PL191420B1/pl unknown
- 1998-04-23 RU RU98107627A patent/RU2143087C1/ru active
- 1998-04-23 CZ CZ19981248A patent/CZ288190B6/cs not_active IP Right Cessation
Patent Citations (1)
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DE741701C (de) | 1938-08-30 | 1943-11-15 | Rheinmetall Borsig Ag | Brennkammer mit Luftzufuehrungsoeffnungen, insbesondere fuer Kohlenstaubfeuerungen |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001086206A1 (de) * | 2000-05-08 | 2001-11-15 | Erik Riedel | Verfahren zur ablagerungsbeseitigung in brennräumen thermischer anlagen während des laufenden betriebs |
EP2447607A1 (de) * | 2010-10-28 | 2012-05-02 | Wgm-Waste Gasification & Melting Sa | Apparat zum Lösen von festen Verbrennungsrückständen im Innern von Verbrennungs- oder Vergasungsöfen |
CN104595882A (zh) * | 2015-01-19 | 2015-05-06 | 浙江徐氏厨房设备有限公司 | 燃气蒸汽发生器除垢装置 |
CN104595882B (zh) * | 2015-01-19 | 2016-06-08 | 浙江徐氏厨房设备有限公司 | 燃气蒸汽发生器除垢装置 |
Also Published As
Publication number | Publication date |
---|---|
SG75832A1 (en) | 2000-10-24 |
CA2234804A1 (en) | 1998-10-24 |
TW346533B (en) | 1998-12-01 |
DE19717378A1 (de) | 1998-10-29 |
PL325947A1 (en) | 1998-10-26 |
ES2184159T3 (es) | 2003-04-01 |
UA41463C2 (uk) | 2001-09-17 |
CA2234804C (en) | 2004-06-08 |
PL191420B1 (pl) | 2006-05-31 |
RU2143087C1 (ru) | 1999-12-20 |
NO981805D0 (no) | 1998-04-22 |
CZ124898A3 (cs) | 1999-02-17 |
JP2868761B2 (ja) | 1999-03-10 |
CZ288190B6 (en) | 2001-05-16 |
EP0874196B1 (de) | 2002-10-23 |
NO312982B1 (no) | 2002-07-22 |
BR9801429A (pt) | 1999-03-30 |
ATE226706T1 (de) | 2002-11-15 |
US6105590A (en) | 2000-08-22 |
JPH10306913A (ja) | 1998-11-17 |
DK0874196T3 (da) | 2003-02-17 |
PT874196E (pt) | 2003-03-31 |
EP0874196A3 (de) | 1999-11-03 |
NO981805L (no) | 1998-10-26 |
DE59806011D1 (de) | 2002-11-28 |
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