EP0213380B1 - Souffleur de suie - Google Patents

Souffleur de suie Download PDF

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Publication number
EP0213380B1
EP0213380B1 EP86110284A EP86110284A EP0213380B1 EP 0213380 B1 EP0213380 B1 EP 0213380B1 EP 86110284 A EP86110284 A EP 86110284A EP 86110284 A EP86110284 A EP 86110284A EP 0213380 B1 EP0213380 B1 EP 0213380B1
Authority
EP
European Patent Office
Prior art keywords
soot
tube
blowing
wall
heat
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.)
Expired - Lifetime
Application number
EP86110284A
Other languages
German (de)
English (en)
Other versions
EP0213380A2 (fr
EP0213380A3 (en
Inventor
Georg Ziegler
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.)
ABB Management AG
Original Assignee
Gebrueder Sulzer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Publication of EP0213380A2 publication Critical patent/EP0213380A2/fr
Publication of EP0213380A3 publication Critical patent/EP0213380A3/de
Application granted granted Critical
Publication of EP0213380B1 publication Critical patent/EP0213380B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
    • 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
    • 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
    • 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
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
    • F28G1/166—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris from external surfaces of heat exchange conduits

Definitions

  • the invention relates to a soot blower for a heat exchanger surface, which consists of parallel tubes which carry a cooling medium and are welded together to form a wall.
  • Such a sootblower is known from CH-PS 648 397.
  • the sootblower tube is coaxially surrounded by a tube of the heat exchanger surface so that cooling medium flows in the space between the two tubes and protects the sootblower tube against excessive temperatures.
  • this solution which is good in itself, has the disadvantage that the outlet temperature of the cooling medium from the double tube is influenced by the temperature of the soot blowing medium and therefore deviates from the outlet temperature of the cooling medium emerging from the other tubes of the heat exchanger surface.
  • this object is achieved in that at least one protective tube connected to the heat exchanger surface is arranged on the side of the wall exposed to the heat and in front of the sootblower tube, through which the same cooling medium flows as the heat exchanger surface, and that the nozzle is located between the Protective tube and the wall extends.
  • the protective tube arranged in front of the sootblast tube is exposed to practically the same thermodynamic conditions as the other tubes of the heat exchanger surface, so that the outlet temperature of the cooling medium from the protective tube and that from the other tubes of the heat exchanger surface are essentially the same.
  • the sootblower has good accessibility to the sootblower tube during assembly and for any repairs, and - depending on the need - the nozzles or their number can be changed in a simple manner.
  • a second heat exchanger surface 2 which also has the shape of an eight-sided regular prism 2, consists of a plurality of vertical wall tubes 3 ′ and webs 7 ′ welded to one another. It surrounds the prism of the heat transfer surface I coaxially and is rotated by 22.5 ° with respect to the inner prism. At their lower ends in FIG.
  • the wall pipes 3 open into an octagonal horizontal distributor 31 and at their upper ends into a collector 31 'which is the same as the distributor 31 and is arranged parallel to the latter.
  • the wall pipes 3 ' open at the bottom in a distributor 32 and at the top in a collector 32', the distributor 32 and the collector 32 'likewise being octagonal and identical to one another and arranged parallel to one another.
  • the collectors 31 ', 32' are at the same height, whereas the outer distributor 32 is arranged lower than the inner distributor 31.
  • the heat exchanger surfaces 2 and 2 are tightly welded to the associated distributor 31 or 32 and the associated collector 31 'or 32'.
  • the distributors 31, 32 are connected to at least one water source, not shown, and the collectors 31 ', 32' to at least one steam consumer, not shown.
  • Hot synthesis gas which flows in the direction of arrow 20 from top to bottom through the inner prism, then flows around its distributor 31 (arrows 20 ') and then rises between the inner prism and the outer prism.
  • the synthesis gas gives off heat to the water in the wall pipes 3 and 3 ', steam being generated.
  • the heat exchanger surfaces I and 2 are accommodated with their distributors 31 and 32 and collectors 31 'and 32' in a common pressure vessel 10, in which the pressure is largely the same.
  • a sootblower tube 4 is provided, which can be fed with the aid of a control valve 8 with a compressed gas acting as a sootblowing medium from at least one compressed gas source, not shown.
  • a protective tube 6 is arranged in front of each sootblower tube 4 and parallel to it, which ends at the bottom in the distributor 31 and at the top in the collector 31 '.
  • the protective tubes have the same diameter as the wall tubes 3 and are made of the same material as this. They protect the sootblast pipes 4 from excessive temperatures and are subject to similar thermodynamic conditions as the wall pipes 3, so that the steam content of the water-steam mixture emerging from them is approximately equal to that of the mixture emerging from the wall pipes 3.
  • a plurality of sheet metal pieces 16 connect each protective tube 6 to the two nearest wall tubes 3.
  • nozzles 5 are provided which extend between the protective tube 6 and the wall tubes 3, namely through the gaps between two sheet metal pieces 16.
  • the nozzles one Blower tube 4 are directed alternately against the next but one side of the inner prism, so that the inner surface of each side of this prism is swept from two sides by compressed gas (FIG. 2).
  • all pipes are accessible from at least one wall side, which is favorable both for assembly and for repairs.
  • sootblast tubes 14 are provided in each octagon side of the outer heat exchanger surface 2, each taking the place of a web 7 '.
  • Two of the blowpipes 14 are provided in the central region of the side, and the nozzles 15 of the blowpipe 14 located on the left of the center are directed towards the outside of the inner prism provided on the right of the center; Accordingly, the nozzles 15 of the blowpipes 14 located on the right of the center are directed towards the outside of the inner prism, which extends to the left of the center.
  • the two remaining sootblast tubes 14 on each outer prism side are attached near the edges of this prism. Their nozzles 15 are each directed towards the side of the outer prism adjacent to the associated edge.
  • the function of the soot blower according to Fig. And 2 is dependent on the degree and distribution of the pollution of the heat exchanger surface and 2 by the synthesis gas.
  • compressed gas is blown onto the surfaces of the two prisms via the sootblast pipes 4 and 14 and the nozzles 5 and 15, and these are cleaned in the process.
  • the control valves 8 can be operated both manually and automatically. It has been shown that in most cases it is sufficient to alternately blow compressed gas onto the surfaces for short time intervals; In the period between the blowing intervals, only a small amount of compressed gas is led into the blowpipes in order to achieve a certain cooling effect and to avoid a possible blockage of the nozzles.
  • sootblower tube 4 Due to the smooth surface of the sootblower tube 4 'on one side, it is possible to use the same nozzles 5 over the entire length of the tube. It is also possible to have the diameter of the blowpipes continuously reduced so that the whole pipe forms an oblique cone.
  • the nozzle 5 according to FIG. 6 has the advantage that a large number of them are undrilled on the soot blowing tube 4 or 4 'during assembly, i.e. can still be attached without outlet bore 50 and only after commissioning - when the actual cleaning needs have been determined - only the really necessary nozzles 5 can be made ready for operation by simply producing the bore 50.
  • a nozzle 5 'with a larger diameter is provided, which forms a more acute angle with the plane in which the webs 7 extend than the nozzle 5 in FIGS. 3 and 4 .
  • the nozzle 5 ' is connected to the soot blowing tube 4' via a curved connecting tube 13.
  • control valve 8 For the sake of simplicity, only one control valve 8 is shown in each of FIGS. I and 2, although such a valve is provided for each soot blowing tube 4, 14. However, it may be more appropriate to use the compressed gas to control ge for all soot pipes 4 and all soot pipes 14 simultaneously by means of a single valve. Operational reliability can be increased if several control valves are connected redundantly in series and / or in parallel. It is also possible to use very simple shut-off valves instead of the control valves if the contamination is very high, so that the largest possible amount of soot blowing medium is constantly blown against the heat exchanger surfaces during normal operation.
  • the nozzles 5 and 15 can be directed onto walls other than those shown in FIGS. I and 2. In contrast to FIG. 2, if necessary, several nozzles can act simultaneously on the same area of a wall from different directions.
  • the sootblast tubes and the protective tubes can also have a cross-section other than circular, e.g. elliptical cross section.

Claims (6)

1. Souffleur des suies pour une surface d'échange thermique qui se compose de tubes parallèles, transportant un fluide de refroidissement et soudés entre eux en une paroi dans laquelle est prévu au moins un tube de soufflage des suies, pouvant être alimenté avec un fluide de soufflage des suies, qui présente au moins une buse de sortie du fluide de soufflage des suies, caractérisé en ce que sur le côté de la paroi exposé à l'apport de chaleur est disposé, devant le tube de soufflage des suies et parallèlement à celui-ci, au moins un tube de protection, en liaison avec la surface d'échange de chaleur, qui est traversé par le même fluide de refroidissement que la surface d'échange thermique, et en ce que la buse s'étend entre le tube de protection et la paroi.
2. Souffleur des suies selon la revendication 1, caractérisé en ce que la paroi de la surface d'échange thermique constitue un prisme vertical polygonal, régulier de préférence, qui présente au milieu de chaque côté un tube de soufflage des suies, et en ce que les buses de chaque tube de soufflage des suies sont dirigées vers l'intérieur du prisme de manière que les jets de fluide de soufflage des suies balayent chacun un côté du prisme voisin du côté correspondant.
3. Souffleur des suies selon la revendication 1 ou 2, caractérisé en ce que le tube de protection et les tubes de la surface d'échange thermique sont raccordés à des collecteurs communs.
4. Souffleur des suies selon l'une des revendications 1 à 3, caractérisé en ce que le tube de soufflage des suies présente un diamètre décroissant en continu ou par paliers dans la direction d'écoulement du fluide de soufflage des suies.
5. Souffleur des suies selon la revendication 4, avec réduction de diamètre par paliers, caractérisé en ce que la réduction de diamètre est telle qu'il en résulte une surface latérale rectiligne sur le côté du tube de réduction des suies tourné vers l'incidence de la chaleur.
6. Soufflage des suies selon l'une des revendications 1 à 5, caractérisé en ce que des moyens d'étranglement sont prévus pour commander la quantité de fluide de soufflage des suies s'écoulant dans le tube de soufflage des suies.
EP86110284A 1985-09-03 1986-07-25 Souffleur de suie Expired - Lifetime EP0213380B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3779/85A CH667521A5 (de) 1985-09-03 1985-09-03 Russblaeser.
CH3779/85 1985-09-03

Publications (3)

Publication Number Publication Date
EP0213380A2 EP0213380A2 (fr) 1987-03-11
EP0213380A3 EP0213380A3 (en) 1988-09-21
EP0213380B1 true EP0213380B1 (fr) 1990-03-21

Family

ID=4263305

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110284A Expired - Lifetime EP0213380B1 (fr) 1985-09-03 1986-07-25 Souffleur de suie

Country Status (7)

Country Link
US (1) US4765394A (fr)
EP (1) EP0213380B1 (fr)
JP (1) JPH0776603B2 (fr)
CN (1) CN1008660B (fr)
CH (1) CH667521A5 (fr)
DE (1) DE3669772D1 (fr)
ZA (1) ZA864669B (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19533908C2 (de) * 1995-09-13 1998-07-23 Gutehoffnungshuette Man Abhitzekessel
DE19649532A1 (de) * 1996-11-29 1998-06-04 Gutehoffnungshuette Man Synthesegas-Wärmetauscher-Anlage
JP2005172417A (ja) * 2003-11-20 2005-06-30 United Technol Corp <Utc> ガスを導く装置および内部面洗浄装置の作動方法
US7047908B2 (en) * 2003-12-11 2006-05-23 United Technologies Corporation Cooling flange
US20050126595A1 (en) * 2003-12-11 2005-06-16 Flatness Scott A. Detonative cleaning apparatus
US20050125932A1 (en) * 2003-12-11 2005-06-16 Kendrick Donald W. Detonative cleaning apparatus nozzle
US8684070B2 (en) * 2006-08-15 2014-04-01 Babcock & Wilcox Power Generation Group, Inc. Compact radial platen arrangement for radiant syngas cooler
US8381690B2 (en) * 2007-12-17 2013-02-26 International Paper Company Controlling cooling flow in a sootblower based on lance tube temperature
WO2009151544A2 (fr) * 2008-05-27 2009-12-17 Georgia-Pacific Consumer Products Lp Tissu de bain de première qualité
WO2010023306A2 (fr) * 2008-09-01 2010-03-04 Shell Internationale Research Maatschappij B.V. Agencement autonettoyant
DE102011110926A1 (de) * 2011-07-20 2013-01-24 Clyde Bergemann Gmbh Maschinen- Und Apparatebau Reinigungsgerät für einen Konvektionsabschnitt einer Wärmekraftanlage
US9706685B2 (en) 2011-12-28 2017-07-11 Liebert Corporation Cooling system for high density heat loads
US9494371B2 (en) * 2011-12-28 2016-11-15 Liebert Corporation Pumped refrigerant cooling system with 1+1 to N+1 and built-in redundancy
RU2015135485A (ru) * 2013-01-31 2017-03-03 Теннеко Отомоутив Оперэйтинг Компани Инк. Составной сажеобдуватель
CN105865228B (zh) * 2016-04-06 2018-01-16 西安交通大学 一种用于烟气余热回收的自清灰换热器及采用该换热器的自清灰方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1939387A (en) * 1933-12-12 Cooling means for soot blower
US1517440A (en) * 1921-10-18 1924-12-02 Frederick W Linaker Air-cooled soot cleaner
GB208485A (en) * 1922-07-12 1923-12-12 Diamond Power Speciality Improvements in boiler cleaners
US1664865A (en) * 1923-01-15 1928-04-03 Diamond Power Speciality Boiler cleaner
US1840544A (en) * 1923-07-02 1932-01-12 Diamond Power Speciality Boiler cleaner
DE444435C (de) * 1925-05-31 1927-05-17 Jacques Piedboeuf G M B H Russabblasevorrichtung fuer Wasserrohrkessel
GB288830A (en) * 1927-04-30 1928-04-19 Wilfred Rothery Wood Improvements relating to water tubes for use in boilers or furnaces
DE744500C (de) * 1941-04-04 1944-01-18 Herpen Co Kg La Mont Kessel Russblaeser
ES357569A1 (es) * 1967-09-06 1970-03-16 Rheinstahl Henschel Ag Un dispositivo soplador del hollin para generadores de va- por.
CH648397A5 (de) * 1980-09-19 1985-03-15 Sulzer Ag Russblaeser.
DE3312599A1 (de) * 1983-04-08 1984-10-11 Krupp-Koppers Gmbh, 4300 Essen Russblaeser zum beseitigen von ablagerungen in gasdurchstroemten raeumen, wie waermetauschern, reaktionsraeumen und dergleichen
DE3406893C3 (de) * 1984-02-25 1996-02-08 Babcock Energie Umwelt Konvektionskühler

Also Published As

Publication number Publication date
US4765394A (en) 1988-08-23
EP0213380A2 (fr) 1987-03-11
JPH0776603B2 (ja) 1995-08-16
DE3669772D1 (de) 1990-04-26
CH667521A5 (de) 1988-10-14
CN1008660B (zh) 1990-07-04
EP0213380A3 (en) 1988-09-21
JPS6256794A (ja) 1987-03-12
CN86105365A (zh) 1987-03-04
ZA864669B (en) 1987-02-25

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