EP0763702A1 - Tubewall orifice for soot blower - Google Patents
Tubewall orifice for soot blower Download PDFInfo
- Publication number
- EP0763702A1 EP0763702A1 EP96113622A EP96113622A EP0763702A1 EP 0763702 A1 EP0763702 A1 EP 0763702A1 EP 96113622 A EP96113622 A EP 96113622A EP 96113622 A EP96113622 A EP 96113622A EP 0763702 A1 EP0763702 A1 EP 0763702A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- soot blower
- pipe wall
- blower box
- wall bushing
- bushing according
- 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
- 239000004071 soot Substances 0.000 title claims abstract description 37
- 239000000919 ceramic Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 17
- 239000000835 fiber Substances 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 6
- 239000000853 adhesive Substances 0.000 claims abstract description 5
- 230000001070 adhesive effect Effects 0.000 claims abstract description 5
- 239000011491 glass wool Substances 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 27
- 239000011094 fiberboard Substances 0.000 claims description 14
- 239000002918 waste heat Substances 0.000 claims description 8
- 230000009970 fire resistant effect Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 9
- 239000011888 foil Substances 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 description 7
- 238000003786 synthesis reaction Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 208000001848 dysentery Diseases 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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
- F28G15/00—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
- F22B1/1838—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines the hot gas being under a high pressure, e.g. in chemical installations
- F22B1/1846—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines the hot gas being under a high pressure, e.g. in chemical installations the hot gas being loaded with particles, e.g. waste heat boilers after a coal gasification plant
-
- 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
- F22B37/10—Water tubes; Accessories therefor
- F22B37/14—Supply mains, e.g. rising mains, down-comers, in connection with water tubes
- F22B37/147—Tube arrangements for cooling orifices, doors and burners
Definitions
- the invention relates to a pipe wall bushing with a sliding slide plate for a soot blower lance in a medium and high pressure gas space of a waste heat boiler.
- Sootblower lances are generally used in medium-pressure / high-pressure synthesis gas coolers or waste heat boilers to clean the inner, vertical boiler tube walls in order to clean the boiler tubes of deposits in the form of soot and other solid particles of the synthesis gas, for example in a coal pressure gasification plant.
- a tube wall opening is provided on the tube cage for each soot blower lance.
- the sootblower boxes welded gas-tight to the pipe cage in this area seal off the gas-side high-temperature chamber from the pressure jacket of the waste heat boiler.
- the gas-fired waste heat boiler consists of a gas-tight welded tube cage with additional tube cooling surfaces in order to extract the sensible heat from the synthesis gas and thus cool it down.
- the tube cage and cooling surfaces are placed together in a pressure jacket that is designed for the gas-side pressure load.
- Pressure vessel and cooling system are mechanically connected to each other.
- sootblowers inserted into the waste heat boiler first penetrate the wall of the outer pressure vessel, then also the inner tube cage, the flange connection of the pressure jacket being the fixed point for the sootblower lance.
- the point of passage of the sootblower lance through the tube cage is designed as a floating point due to the different temperatures.
- Sootblower boxes on pipe wall bushings of a synthesis gas cooler are known, which were supplied by the applicant for the synthesis gas plant Ruhr (SAR) at the Ruhrchemie in Oberhausen-Holten.
- This soot blower box consists of horizontally arranged holding plates and vertically arranged guide plates with an elongated hole opening and a sliding plate arranged between them with a round opening for the passage of the soot blower lance and a sleeve welded thereon, which has a larger inner diameter than the opening of the sliding plate.
- An annular packing is placed inside the sleeve around the sootblower lance, onto which a spacer sleeve is pushed, which exerts a pressure on the packing by means of an annular spring in order to achieve a seal of the inner and outer gas space in the synthesis gas cooler.
- the unprotected slide plate is exposed to high temperatures on the inside, which leads to increased wear due to high-temperature corrosion and to deformations due to thermal stresses, which impair displacement of the slide plate, even though the bent pipes are lined with an FF ramming compound inside the pipe duct.
- the object of the invention is therefore to provide a tube wall bushing for a soot blower that is temperature, pressure and displacement-compliant Gastightness with simultaneous possibility of displacement and protection against high temperatures of the space and thus the pressure jacket wall of the waste heat boiler is guaranteed.
- the entire passage area is encapsulated in a gas-tight manner through the tube cage with a soot blower box and a sliding plate.
- a slot-shaped passage opening of the soot blower box is covered by a sliding plate which is attached to the soot blower lance.
- a heat-insulating ceramic fibreboard is attached to the rectangular sliding plate on the side of the soot blower box.
- the fiberboard is framed by a surrounding frame and attached with an adhesive to the expanded metal covered steel plate.
- the sliding plate is permanently pressed onto the soot blower box in a known manner with a compression spring which applies the required sealing force via a spacer sleeve and a sealing ring.
- a packing ring is inserted in the sleeve and seals the sliding plate against the soot blower lance.
- the fiberboard With abrasion-resistant fiber mat material, the fiberboard is installed with an overhang to the profile frame. If the ceramic material is less resistant to abrasion, you can lock it with the profile frame and additionally ensure gas-tightness with heat-resistant, elastic cords.
- Thermal protection for the sootblower box is provided by two types of insulating materials, firstly by a ceramic fiber mat (wool) that lies against the sootblower box and secondly by ff material that is arranged on the inside of the gas space.
- a ceramic fiber mat wool
- ff material ff material
- the ceramic fiber material has a significantly lower thermal conductivity than the ff material, so that the combination of both materials offers optimal thermal protection.
- FF material in the form of casting or spraying compound is required towards the gas space, since this material is resistant to flying dust and hot slag.
- the ff-mass is held floating by the bent pipes and the anchors attached to them.
- the entire passage area is heat-insulated and gas-tight encapsulated by the soot blower box (5).
- the elongated opening (6) of the soot blower box (5) is covered by a sliding plate (7) which is attached to the soot blower lance (8).
- the sliding plate (7) has a heat-insulating, ceramic fiberboard (9) on the side of the soot blower box (5).
- This fiberboard (9) is surrounded by a circumferential profile steel frame (10) and fastened with a heat-resistant adhesive (11) to the sliding plate (7) covered with expanded metal (12).
- the pressure of the sliding plate (7) on the soot blower box (5) is achieved with a compression spring that applies the required sealing force via a spacer sleeve (14) and sealing ring (15).
- a packing ring (15) is placed in the sleeve (16) and seals the sliding plate (7) against the soot blower lance (8).
- Anchors (19) are attached to the bent tubes (17), and the tubes (17) are wrapped with a film material (18) before a ceramic fiber mat (20) and a refractory casting or ramming compound (21) are introduced.
- soot blower box (5) is protected on the inside by two types of insulating materials, first by a ceramic fiber mat (wool) (20), which lies against the soot blower box (5), and an ff material (21), which is arranged on the gas space side.
- the ff mass will held floating by the bent pipes (17) and the anchors (19) attached to them.
- the bent tubes (17) are wrapped with a film (18) so that the relative movements can be compensated for.
- the sootblower lance (8) is fastened in a known manner to a flange (25) by means of fastening (26) and sealing elements (27) on the connecting piece (4.1) of the pressure jacket (4).
- a compression spring (13) presses on a spacer sleeve (14) with a seal (15) arranged in a sleeve (16) and thus provides the gas tightness through the sliding plate (7) between the inner gas space (1) and the annular gap (2) between the tube cage (3) and pressure jacket (4) of the synthesis gas cooler.
- the fiberboard (9) is installed with a protrusion to the profile steel frame (10). If the ceramic material is less resistant to abrasion, it can be closed with the profile steel height (10) and the gas tightness is additionally ensured by heat-resistant, elastic cords (24).
- the cord (24) is inserted between the guide (22) and holding plate (23) of the soot blower box (5) and the profile frame (10).
- the gas spaces are sealed exclusively by the ceramic fiberboard (9) fastened to the sliding plate (7) with an adhesive (11) and expanded metal (12), which presses on the plate (5) of the soot blower box.
- the ceramic fiberboard (9) is stronger than the profile frame (10).
- the fiberboard (9) slides on the inside of the guide plate (22), which is connected to the plate (5) via a side plate (23).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Incineration Of Waste (AREA)
- Sink And Installation For Waste Water (AREA)
Abstract
Description
Die Erfindung betrifft eine Rohrwanddurchführung mit einer verschiebbaren Gleitplatte für eine Rußbläserlanze in einem Mittel- und Hochdruckgasraum eines Abhitzekessels.The invention relates to a pipe wall bushing with a sliding slide plate for a soot blower lance in a medium and high pressure gas space of a waste heat boiler.
Rußbläserlanzen werden in der Regel bei Mitteldruck-/Hochdruck-Synthesegaskühlern bzw. Abhitzekesseln zum Reinigen der inneren, senkrechten Kesselrohrwände eingesetzt, um die Kesselrohre von Ablagerungen in Form von Ruß und anderen festen Partikeln des Synthesegases, beispielsweise bei einer Kohledruckvergasungsanlage, zu reinigen.Sootblower lances are generally used in medium-pressure / high-pressure synthesis gas coolers or waste heat boilers to clean the inner, vertical boiler tube walls in order to clean the boiler tubes of deposits in the form of soot and other solid particles of the synthesis gas, for example in a coal pressure gasification plant.
Am Rohrkäfig ist für eine jede Rußbläserlanze eine Rohrwandöffnung vorgesehen. Die in diesem Bereich mit dem Rohrkäfig gasdicht verschweißten Rußbläserkästen dichten den gasseitigen Hochtemperaturraum gegenüber dem Druckmantel des Abhitzekessels ab.A tube wall opening is provided on the tube cage for each soot blower lance. The sootblower boxes welded gas-tight to the pipe cage in this area seal off the gas-side high-temperature chamber from the pressure jacket of the waste heat boiler.
Der gasseitig hochgespannte Abhitzekessel besteht aus einem gasdicht geschweißten Rohrkäfig mit zusätzlich eingebrachten Rohrkühlflächen, um dem Synthesegas die fühlbare Wärme zu entziehen und es damit abzukühlen. Rohrkäfig und Kühlflächen sind gemeinsam in einen Druckmantel eingebracht, der für die gasseitige Druckbelastung ausgelegt ist. Druckgefäß und Kühlsystem sind mechanisch miteinander verbunden.The gas-fired waste heat boiler consists of a gas-tight welded tube cage with additional tube cooling surfaces in order to extract the sensible heat from the synthesis gas and thus cool it down. The tube cage and cooling surfaces are placed together in a pressure jacket that is designed for the gas-side pressure load. Pressure vessel and cooling system are mechanically connected to each other.
Die in den Abhitzekessel eingesteckten Rußbläser durchdringen zuerst die Wand des äußeren Druckbehälters, danach auch den inneren Rohrkäfig, wobei der Anflanschstutzen des Druckmantels den Fixpunkt für die Rußbläserlanze darstellt.The sootblowers inserted into the waste heat boiler first penetrate the wall of the outer pressure vessel, then also the inner tube cage, the flange connection of the pressure jacket being the fixed point for the sootblower lance.
Aufgrund der mechanischen Verbindung von äußerem Druckmantel und innerem Rohrkäfig wird der Durchtrittspunkt der Rußbläserlanze durch den Rohrkäfig wegen der unterschiedlichen Temperaturen als Gleitpunkt ausgeführt.Due to the mechanical connection of the outer pressure jacket and the inner tube cage, the point of passage of the sootblower lance through the tube cage is designed as a floating point due to the different temperatures.
Bekannt sind Rußbläserkästen an Rohrwanddurchführungen eines Synthesegaskühlers, die von der Anmelderin für die Synthesegasanlage Ruhr (SAR) bei der Ruhrchemie in Oberhausen-Holten geliefert wurden.Sootblower boxes on pipe wall bushings of a synthesis gas cooler are known, which were supplied by the applicant for the synthesis gas plant Ruhr (SAR) at the Ruhrchemie in Oberhausen-Holten.
Dieser Rußbläserkasten besteht aus horizontal angeordneten Halteblechen und aus vertikal angeordneten Führungsblechen mit einer Langlochöffnung und einem dazwischen angeordneten Gleitblech mit runder Öffnung für die Durchführung der Rußbläserlanze sowie einer darauf angeschweißten Hülse, die einen größeren Innendurchmesser als die Öffnung des Gleitbleches aufweist.This soot blower box consists of horizontally arranged holding plates and vertically arranged guide plates with an elongated hole opening and a sliding plate arranged between them with a round opening for the passage of the soot blower lance and a sleeve welded thereon, which has a larger inner diameter than the opening of the sliding plate.
Innerhalb der Hülse wird um die Rußbläserlanze eine ringförmige Packung angeordnet, auf die eine Distanzhülse geschoben wird, die mittels einer Ringfeder auf die Packung einen Druck ausübt, um eine Abdichtung des inneren und äußeren Gasraumes in dem Synthesegaskühler zu erreichen.An annular packing is placed inside the sleeve around the sootblower lance, onto which a spacer sleeve is pushed, which exerts a pressure on the packing by means of an annular spring in order to achieve a seal of the inner and outer gas space in the synthesis gas cooler.
Die ungeschützte Gleitplatte ist auf der Innenseite hohen Temperaturen ausgesetzt, die zu erhöhtem Verschleiß durch Hochtemperaturkorrosion und durch Verformungen aufgrund von Wärmespannungen führen, die ein Verschieben der Gleitplatte beeinträchtigen, obwohl die abgeknickten Rohre innerhalb der Rohrdurchführung mit einer ff-Stampfmasse ausgekleidet sind.The unprotected slide plate is exposed to high temperatures on the inside, which leads to increased wear due to high-temperature corrosion and to deformations due to thermal stresses, which impair displacement of the slide plate, even though the bent pipes are lined with an FF ramming compound inside the pipe duct.
Die Aufgabe der Erfindung besteht deshalb darin, eine temperatur-, druck- und verschiebegerechte Rohrwanddurchführung für einen Rußbläser zu schaffen, die eine Gasdichtigkeit bei gleichzeitiger Verschiebemöglichkeit sowie Schutz gegen hohe Temperaturen des Zwischenraumes und somit der Druckmantelwand des Abhitzekessels gewährleistet.The object of the invention is therefore to provide a tube wall bushing for a soot blower that is temperature, pressure and displacement-compliant Gastightness with simultaneous possibility of displacement and protection against high temperatures of the space and thus the pressure jacket wall of the waste heat boiler is guaranteed.
Die Lösung der Aufgabe erfolgt durch die kennzeichnenden Merkmale von Anspruch 1. Die Unteransprüche beschreiben eine vorteilhafte Ausgestaltung der Erfindung.The problem is solved by the characterizing features of
In dem Abhitzekessel herrscht zwischen dem Gasraum innerhalb des Rohrkäfiges und dem vom Druckmantel und Rohrkäfig gebildeten Zwischenraum eine Druckdifferenz. Ein Eindringen von Heißgas aus dem inneren Gasraum in den Zwischenraum ist nicht statthaft, da es sonst zu unzulässig hohen Temperaturen am Außenmantel des Behälters kommt.In the waste heat boiler, there is a pressure difference between the gas space inside the tube cage and the space formed by the pressure jacket and tube cage. A penetration of hot gas from the inner gas space into the intermediate space is not permitted, since otherwise the temperature of the container's outer jacket will be impermissibly high.
Erfindungsgemäß wird daher der gesamte Durchtrittsbereich durch den Rohrkäfig mit einem Rußbläserkasten und einer Gleitplatte gasdicht gekapselt. Eine langlochförmige Durchtrittsöffnung des Rußbläserkastens ist durch ein Gleitblech abgedeckt, das auf der Rußbläserlanze aufgesteckt ist. Als Hitzeschutz wird an das rechteckige Gleitblech auf der Seite des Rußbläserkastens eine wärmeisolierende keramische Faserplatte angebracht. Die Faserplatte ist durch einen umlaufenden Rahmen eingefaßt und mit einem Kleber auf der mit Streckmetall belegten Stahlplatte befestigt.According to the invention, the entire passage area is encapsulated in a gas-tight manner through the tube cage with a soot blower box and a sliding plate. A slot-shaped passage opening of the soot blower box is covered by a sliding plate which is attached to the soot blower lance. As heat protection, a heat-insulating ceramic fibreboard is attached to the rectangular sliding plate on the side of the soot blower box. The fiberboard is framed by a surrounding frame and attached with an adhesive to the expanded metal covered steel plate.
Die permanente Anpressung der Gleitplatte an den Rußbläserkasten erfolgt in bekannter Weise mit einer Druckfeder, die über eine Distanzhülse und einen Dichtring die erforderliche Dichtkraft aufbringt. Ein Packungsring ist in die Hülse eingelegt und dichtet die Gleitplatte gegen die Rußbläserlanze ab.The sliding plate is permanently pressed onto the soot blower box in a known manner with a compression spring which applies the required sealing force via a spacer sleeve and a sealing ring. A packing ring is inserted in the sleeve and seals the sliding plate against the soot blower lance.
Dadurch ist eine Bewegungsfreiheit in vertikaler und horizontaler Richtung bei gleichzeitiger Abdichtung des Gasraumes gegen den Innenraum gewährleistet. Die Gasdichtheit wird durch die Anpressung der Faserplatte an das Gehäuse erzielt. Bei abriebfestem Fasermattenmaterial wird die Faserplatte mit Überstand zu dem Profilrahmen eingebaut. Ist das keramische Material weniger abriebfest, läßt man es mit dem Profilrahmen abschließen und sichert die Gasdichtheit zusätzlich durch hitzebeständige, elastische Schnüre ab.This ensures freedom of movement in the vertical and horizontal directions while simultaneously sealing the gas space from the interior. The gas tightness is achieved by pressing the fiberboard against the housing. With abrasion-resistant fiber mat material, the fiberboard is installed with an overhang to the profile frame. If the ceramic material is less resistant to abrasion, you can lock it with the profile frame and additionally ensure gas-tightness with heat-resistant, elastic cords.
Damit die Rußbläserlanze in den Gasraum eindringen kann, sind zwei Rohre des Rohrkäfigs im Lanzendurchtrittsbereich ausgeknickt, um die Durchtrittsöffnung zu bilden. Im Bereich der ausgeknickten Rohre fehlt der Wärmeschutz, so daß die volle Temperaturbeaufschlagung, t > 1400 °C, aus dem Gasraum vom Rußbläserkasten und dem Gleitblech aufgenommen werden muß. Da die vorgenannten Bauteile ungekühlt sind, müssen sie wärmeisoliert werden, weil sonst durch Hochtemperatur-Korrosion und Wärmeverformungen Schäden auftreten.So that the sootblower lance can penetrate into the gas space, two tubes of the tube cage are bent in the lance passage area to form the passage opening. There is no heat protection in the area of the bent pipes, so that the full temperature exposure, t> 1400 ° C, must be absorbed from the gas space by the soot blower box and the sliding plate. Since the aforementioned components are uncooled, they must be thermally insulated, because otherwise damage will occur due to high-temperature corrosion and heat deformation.
Der Wärmeschutz für den Rußbläserkasten erfolgt durch zwei Arten von Isoliermaterialien, einmal durch eine keramische Fasermatte (Wolle), die am Rußbläserkasten anliegt und zum anderen durch ff-Material, das zur Gasrauminnenseite angeordnet ist.Thermal protection for the sootblower box is provided by two types of insulating materials, firstly by a ceramic fiber mat (wool) that lies against the sootblower box and secondly by ff material that is arranged on the inside of the gas space.
Das keramische Fasermaterial hat einen wesentlich geringen Wärmeleitwert als das ff-Material, so daß die Kombination beider Materialien einen optimalen Wärmeschutz bietet. Zum Gasraum hin ist ff-Material in Form von Gieß- oder Spritzmasse erforderlich, da dieses Material gegen Flugstaub und heißer Schlacke beständig ist. Die ff-Masse wird schwimmend durch die ausgeknickten Rohre und die daran aufgebrachten Anker gehalten.The ceramic fiber material has a significantly lower thermal conductivity than the ff material, so that the combination of both materials offers optimal thermal protection. FF material in the form of casting or spraying compound is required towards the gas space, since this material is resistant to flying dust and hot slag. The ff-mass is held floating by the bent pipes and the anchors attached to them.
Der Vorteil dieser Ausführung liegt darin, daß unterschiedliche Wärmedehnungen von ff-Material, Rußbläserkasten und Rohren sich nicht in Spannungserhöhungen bzw. Abbröckeln der ff-Masse umsetzen, sondern, daß eine freie Wärmeausdehnung gegeben ist. Dadurch werden Rißbildungen in der ff-Masse bzw. ein Abbröckeln von Teilen der ff-Masse vermieden.The advantage of this design is that different thermal expansions of ff material, soot blower box and pipes do not translate into increases in tension or crumbling of the ff mass, but that there is free thermal expansion. This prevents cracks in the ff mass or crumbling of parts of the ff mass.
Aus diesem Grunde sind auch die ausgeknickten Rohre mit einer Folie umwickelt, damit die Relativbewegungen kompensiert werden können.For this reason, the kinked pipes are wrapped with a film so that the relative movements can be compensated for.
Die Erfindung wird anhand eines Ausführungsbeispieles näher erläutert.The invention is explained in more detail using an exemplary embodiment.
Es zeigen:
- Fig. 1
- einen Querschnitt durch den Rußbläserkasten,
- Fig. 2
- einen Schnitt A-B (Längsschnitt) durch den Rußbläserkasten,
- Fig. 3
- einen Ausschnitt aus Fig. 1 am oberen Bereich des Rußbläserkastens,
- Fig. 4
- einen Ausschnitt ähnlich wie Fig. 3, jedoch ohne elastische Schnur.
- Fig. 1
- a cross section through the sootblower box,
- Fig. 2
- a section AB (longitudinal section) through the soot blower box,
- Fig. 3
- 1 at the upper area of the soot blower box,
- Fig. 4
- a section similar to Fig. 3, but without an elastic cord.
Wie in Fig. 1 dargestellt, herrscht zwischen dem Gasraum (1) und dem von Rohrkäfig (3) und Druckmantel (4) gebildeten Zwischenraum (2) eine erhebliche Temperatur- und eine geringe Druckdifferenz.As shown in Fig. 1, there is a considerable temperature and a small pressure difference between the gas space (1) and the space (2) formed by the tube cage (3) and pressure jacket (4).
Damit die hohe Temperatur des Gasraumes nicht in den Zwischenraum gelangt, ist der gesamte Durchtrittsbereich durch den Rußbläserkasten (5) wärmeisoliert und gasdicht gekapselt. Die langlochförmige Durchtrittsöffnung (6) des Rußbläserkastens (5) ist durch ein Gleitblech (7) abgedeckt, das auf der Rußbläserlanze (8) aufgesteckt ist.So that the high temperature of the gas space does not get into the intermediate space, the entire passage area is heat-insulated and gas-tight encapsulated by the soot blower box (5). The elongated opening (6) of the soot blower box (5) is covered by a sliding plate (7) which is attached to the soot blower lance (8).
Das Gleitblech (7) weist auf der Seite des Rußbläserkastens (5) eine wärmeisolierende, keramische Faserplatte (9) auf. Diese Faserplatte (9) ist durch einen umlaufenden Profilstahlrahmen (10) eingefaßt und mit einem wärmebeständigen Kleber (11) auf der mit Streckmetall (12) belegten Gleitplatte (7) befestigt.The sliding plate (7) has a heat-insulating, ceramic fiberboard (9) on the side of the soot blower box (5). This fiberboard (9) is surrounded by a circumferential profile steel frame (10) and fastened with a heat-resistant adhesive (11) to the sliding plate (7) covered with expanded metal (12).
Die Anpressung der Gleitplatte (7) an den Rußbläserkasten (5) wird mit einer Druckfeder erzielt, die über eine Distanzhülse (14) und Dichtring (15) die erforderliche Dichtkraft aufbringt.The pressure of the sliding plate (7) on the soot blower box (5) is achieved with a compression spring that applies the required sealing force via a spacer sleeve (14) and sealing ring (15).
Ein Packungsring (15) ist in die Hülse (16) eingelegt und dichtet die Gleitplatte (7) gegen die Rußbläserlanze (8) ab. An die ausgeknickten Rohre (17) sind Anker (19) angebracht, ferner werden die Rohre (17) mit einem Folienmaterial (18) umwickelt, bevor eine keramische Fasermatte (20) und eine feuerfeste Gieß- bzw. Stampfmasse (21) eingebracht werden.A packing ring (15) is placed in the sleeve (16) and seals the sliding plate (7) against the soot blower lance (8). Anchors (19) are attached to the bent tubes (17), and the tubes (17) are wrapped with a film material (18) before a ceramic fiber mat (20) and a refractory casting or ramming compound (21) are introduced.
Entsprechend Fig. 2 sind im Durchtrittsbereich der Rußbläserlanze (8) zwei Rohre (17) des Rohrkäfigs (3) ausgebogen, so daß die volle Temperaturbeaufschlagung vom Rußbläserkasten (5) und dem Gleitblech (7) aufgenommen wird. Da die vorgenannten Bauteile (5, 7) ungekühlt sind, müssen sie wärmeisoliert werden.2, two tubes (17) of the tube cage (3) are bent out in the passage area of the sootblower lance (8), so that the full temperature exposure is absorbed by the sootblower box (5) and the sliding plate (7). Since the aforementioned components (5, 7) are uncooled, they must be thermally insulated.
Daher wird der Rußbläserkasten (5) innen durch zwei Arten von Isoliermaterialien geschützt, einmal durch eine keramische Fasermatte (Wolle) (20), die am Rußbläserkasten (5) anliegt, und einem ff-Material (21), das zur Gasraumseite angeordnet ist. Die ff-Masse wird schwimmend durch die ausgeknickten Rohre (17) und die daran aufgebrachten Anker (19) gehalten.
Ferner sind die ausgeknickten Rohre (17) mit einer Folie (18) umwickelt, damit die Relativbewegungen kompensiert werden können.
Die Rußbläserlanze (8) ist in bekannter Weise an einem Flansch (25) mittels Befestigungs- (26) und Dichtelementen (27) am Stutzen (4.1) des Druckmantels (4) befestigt. Eine Druckfeder (13) drückt auf eine Distanzhülse (14) mit in einer Hülse (16) angeordneten Dichtung (15) und stellt damit die Gasdichtigkeit durch die Gleitplatte (7) zwischen dem inneren Gasraum (1) und dem Ringspalt (2) zwischen Rohrkäfig (3) und Druckmantel (4) des Synthesegaskühlers sicher.Therefore, the soot blower box (5) is protected on the inside by two types of insulating materials, first by a ceramic fiber mat (wool) (20), which lies against the soot blower box (5), and an ff material (21), which is arranged on the gas space side. The ff mass will held floating by the bent pipes (17) and the anchors (19) attached to them.
Furthermore, the bent tubes (17) are wrapped with a film (18) so that the relative movements can be compensated for.
The sootblower lance (8) is fastened in a known manner to a flange (25) by means of fastening (26) and sealing elements (27) on the connecting piece (4.1) of the pressure jacket (4). A compression spring (13) presses on a spacer sleeve (14) with a seal (15) arranged in a sleeve (16) and thus provides the gas tightness through the sliding plate (7) between the inner gas space (1) and the annular gap (2) between the tube cage (3) and pressure jacket (4) of the synthesis gas cooler.
Aus Fig. 3 ist zu erkennen, daß bei Verwendung von abriebfestem Faserplattenmaterial die Faserplatte (9) mit Überstand zu dem Profilstahlrahmen (10) eingebaut wird. Ist das keramische Material weniger abriebfest, läßt man es mit der Profilstahlhöhe (10) abschließen und sichert die Gasdichtheit zusätzlich durch hitzebeständige, elastische Schnüre (24) ab. Die Schnur (24) wird zwischen dem Führungs- (22) und Halteblech (23) des Rußbläserkastens (5) und dem Profilrahmen (10) eingebracht.From Fig. 3 it can be seen that when using abrasion-resistant fiberboard material, the fiberboard (9) is installed with a protrusion to the profile steel frame (10). If the ceramic material is less resistant to abrasion, it can be closed with the profile steel height (10) and the gas tightness is additionally ensured by heat-resistant, elastic cords (24). The cord (24) is inserted between the guide (22) and holding plate (23) of the soot blower box (5) and the profile frame (10).
Entsprechend Fig. 4 erfolgt die Abdichtung der Gasräume ausschließlich durch die an dem Gleitblech (7) mit einem Kleber (11) und Streckmetall (12) befestigten keramischen Faserplatte (9), die auf das Blech (5) des Rußbläserkastens drückt. Die keramische Faserplatte (9) ist stärker als der Profilrahmen (10) ausgebildet.4, the gas spaces are sealed exclusively by the ceramic fiberboard (9) fastened to the sliding plate (7) with an adhesive (11) and expanded metal (12), which presses on the plate (5) of the soot blower box. The ceramic fiberboard (9) is stronger than the profile frame (10).
Die Faserplatte (9) gleitet an der Innenseite des Führungsbleches (22), das über ein Seitenblech (23) mit dem Blech (5) verbunden ist.The fiberboard (9) slides on the inside of the guide plate (22), which is connected to the plate (5) via a side plate (23).
- 11
- GasraumGas space
- 22nd
- RingspaltAnnular gap
- 33rd
- RohrkäfigPipe cage
- 44th
- DruckmantelPressure jacket
- 4.14.1
- StutzenSupport
- 55
- RußbläserkastenSoot blower box
- 66
- LanglochöffnungenSlot openings
- 77
- GleitblechSliding plate
- 88th
- RußbläserlanzeSootblower lance
- 99
- Keramische FaserplatteCeramic fiberboard
- 1010th
- Umlaufender ProfilstahlAll-round profile steel
- 1111
- KleberGlue
- 1212th
- StreckmetallExpanded metal
- 1313
- DruckfederCompression spring
- 1414
- DistanzhülseSpacer sleeve
- 1515
- DichtringSealing ring
- 1616
- HülseSleeve
- 1717th
- Ausgeknicktes RohrKinked tube
- 1818th
- FolienmaterialFoil material
- 1919th
- Ankeranchor
- 2020th
- Keramische Fasermatte (Glaswolle)Ceramic fiber mat (glass wool)
- 2121
- ff-Materialff material
- 2222
- FührungsblechGuide plate
- 2323
- HalteblechBracket
- 2424th
- Temperaturbeständige SchnurTemperature resistant cord
- 2525th
- Flanschflange
- 2626
- BefestigungselementeFasteners
- 2727
- DichtungsringSealing ring
Claims (9)
dadurch gekennzeichnet,
daß zwischen Gleitplatte (7) und Langlochöffnung (6) des Rußbläserkastens (5) eine in einem Rahmen (10) eingefaßte keramische Faserplatte (9) angeordnet ist.Pipe wall bushing with a sliding slide plate for a soot blower lance in a medium or high pressure gas space of a waste heat boiler,
characterized,
that between the sliding plate (7) and slot opening (6) of the soot blower box (5) is arranged in a frame (10) bordered ceramic fiber plate (9).
dadurch gekennzeichnet,
daß die keramische Faserplatte (9) mittels Kleber (11) an der mit Streckmetall (12) belegten Gleitplatte (7) befestigt ist.Pipe wall bushing according to claim 1,
characterized,
that the ceramic fiberboard (9) is fixed by means of adhesive (11) to the sliding plate (7) covered with expanded metal (12).
dadurch gekennzeichnet,
daß die keramische Faserplatte (9) einen Überstand zum Rahmen (10) aufweist.Pipe wall bushing according to claim 1,
characterized,
that the ceramic fiberboard (9) has an overhang to the frame (10).
dadurch gekennzeichnet,
daß die keramische Faserplatte (9) die gleiche Höhe wie der Rahmen (10) aufweist und daß die Abdichtung des Rußbläserkastens (5) zusätzlich durch eine feuerfeste Schnur (24) erfolgt.Pipe wall bushing according to claim 3,
characterized,
that the ceramic fiberboard (9) has the same height as the frame (10) and that the soot blower box (5) is additionally sealed by a fire-resistant cord (24).
dadurch gekennzeichnet,
daß die ausgeknickten Rohre (17) mit Ankern (19) versehen sind.Pipe wall bushing according to claim 1,
characterized,
that the bent tubes (17) are provided with anchors (19).
dadurch gekennzeichnet,
daß die geknickten Rohre (17) mit einer Folie (18) umwickelt sind und teilweise mit einer keramischen Glaswolle (20) sowie mit ff-Material (21) umgeben sind.Pipe wall bushing according to claim 5,
characterized,
that the kinked tubes (17) are wrapped with a film (18) and are partially surrounded with a ceramic glass wool (20) and with ff material (21).
dadurch gekennzeichnet,
daß die keramische Glaswolle (20) an der Innenseite des Rußbläserkastens (5) anliegt.Pipe wall bushing according to claims 5 and 6,
characterized,
that the ceramic glass wool (20) rests on the inside of the soot blower box (5).
dadurch gekennzeichnet,
daß das ff-Material (21) im Rußbläserkasten (5) schwimmend angeordnet ist.Pipe wall bushing according to claims 5-7,
characterized,
that the ff material (21) in the soot blower box (5) is arranged floating.
dadurch gekennzeichnet,
daß das ff-Material (21) an der Innenseite des Rußbläserkastens (5) unterhalb der Langlochöffnung (6) nach außen hin abgeschrägt ist.Pipe wall bushing according to claims 5-8,
characterized,
that the ff material (21) on the inside of the soot blower box (5) below the slot opening (6) is chamfered outwards.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19533908 | 1995-09-13 | ||
| DE19533908A DE19533908C2 (en) | 1995-09-13 | 1995-09-13 | Waste heat boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0763702A1 true EP0763702A1 (en) | 1997-03-19 |
| EP0763702B1 EP0763702B1 (en) | 2000-04-12 |
Family
ID=7772050
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96113622A Expired - Lifetime EP0763702B1 (en) | 1995-09-13 | 1996-08-26 | Waste heat boiler with soot blower |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0763702B1 (en) |
| DE (2) | DE19533908C2 (en) |
| ES (1) | ES2146819T3 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004005833A1 (en) | 2002-07-09 | 2004-01-15 | Clyde Bergemann, Inc. | Integral packing housing and packing material unit |
| CN101846325A (en) * | 2010-06-02 | 2010-09-29 | 中国石油化工集团公司 | Soot blower |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19714376C1 (en) * | 1997-04-08 | 1999-01-21 | Gutehoffnungshuette Man | Synthesis gas generator with combustion and quench chamber |
| CN101451768B (en) * | 2007-11-28 | 2010-09-22 | 中国恩菲工程技术有限公司 | Exhaust-heating boiler |
| DE202010002473U1 (en) | 2010-02-17 | 2010-05-27 | Interprojekt Gmbh | Plant for de-stoking flue gas with a blow-off device |
| CN102901111A (en) * | 2011-07-29 | 2013-01-30 | 宜兴天地节能技术有限公司 | Soot blower for chamber-combustion water tube pulverized coal fired boiler |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1176785B (en) * | 1957-04-20 | 1964-08-27 | Babcock & Wilcox Dampfkessel | Sootblower Sealing |
| GB2061758A (en) * | 1979-10-04 | 1981-05-20 | Ruhrchemie Ag | Radiation boiler |
| US4545330A (en) * | 1984-04-10 | 1985-10-08 | Cool Water Coal Gasification Program | Self-cleaning liner |
| EP0213380A2 (en) * | 1985-09-03 | 1987-03-11 | GebràDer Sulzer Aktiengesellschaft | Soot blower |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE600827C (en) * | 1932-02-18 | 1934-08-01 | L & C Steinmueller Fa | Soot blower for steam boiler |
| DE4142448A1 (en) * | 1991-12-18 | 1993-07-08 | Ver Energiewerke Ag | Water-jet lance for cleaning heat-exchangers |
| US5203284A (en) * | 1992-03-02 | 1993-04-20 | Foster Wheeler Development Corporation | Fluidized bed combustion system utilizing improved connection between the reactor and separator |
-
1995
- 1995-09-13 DE DE19533908A patent/DE19533908C2/en not_active Expired - Fee Related
-
1996
- 1996-08-26 ES ES96113622T patent/ES2146819T3/en not_active Expired - Lifetime
- 1996-08-26 EP EP96113622A patent/EP0763702B1/en not_active Expired - Lifetime
- 1996-08-26 DE DE59604944T patent/DE59604944D1/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1176785B (en) * | 1957-04-20 | 1964-08-27 | Babcock & Wilcox Dampfkessel | Sootblower Sealing |
| GB2061758A (en) * | 1979-10-04 | 1981-05-20 | Ruhrchemie Ag | Radiation boiler |
| US4545330A (en) * | 1984-04-10 | 1985-10-08 | Cool Water Coal Gasification Program | Self-cleaning liner |
| EP0213380A2 (en) * | 1985-09-03 | 1987-03-11 | GebràDer Sulzer Aktiengesellschaft | Soot blower |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004005833A1 (en) | 2002-07-09 | 2004-01-15 | Clyde Bergemann, Inc. | Integral packing housing and packing material unit |
| US7367079B2 (en) | 2002-07-09 | 2008-05-06 | Clyde Bergemann, Inc. | Integral packing housing and packing material unit |
| CN101846325A (en) * | 2010-06-02 | 2010-09-29 | 中国石油化工集团公司 | Soot blower |
| CN101846325B (en) * | 2010-06-02 | 2012-08-22 | 中国石油化工集团公司 | Soot blower |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0763702B1 (en) | 2000-04-12 |
| DE19533908C2 (en) | 1998-07-23 |
| DE19533908A1 (en) | 1997-03-20 |
| ES2146819T3 (en) | 2000-08-16 |
| DE59604944D1 (en) | 2000-05-18 |
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