EP2336635B1 - Chaudière de récupération de chaleur destinée au refroidissement de gaz d'échappement, notamment de gaz d'échappement contenant de la poussière - Google Patents

Chaudière de récupération de chaleur destinée au refroidissement de gaz d'échappement, notamment de gaz d'échappement contenant de la poussière Download PDF

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Publication number
EP2336635B1
EP2336635B1 EP09015761.1A EP09015761A EP2336635B1 EP 2336635 B1 EP2336635 B1 EP 2336635B1 EP 09015761 A EP09015761 A EP 09015761A EP 2336635 B1 EP2336635 B1 EP 2336635B1
Authority
EP
European Patent Office
Prior art keywords
boiler
waste heat
tie rod
heat recovery
recovery boiler
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.)
Not-in-force
Application number
EP09015761.1A
Other languages
German (de)
English (en)
Other versions
EP2336635A1 (fr
Inventor
Herbert Hüning
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.)
Oschatz GmbH
Original Assignee
Oschatz GmbH
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 Oschatz GmbH filed Critical Oschatz GmbH
Priority to EP09015761.1A priority Critical patent/EP2336635B1/fr
Priority to MA33424A priority patent/MA32445B1/fr
Priority to AU2010257257A priority patent/AU2010257257B2/en
Priority to US12/972,586 priority patent/US8555822B2/en
Publication of EP2336635A1 publication Critical patent/EP2336635A1/fr
Application granted granted Critical
Publication of EP2336635B1 publication Critical patent/EP2336635B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • F22B37/20—Supporting arrangements, e.g. for securing water-tube sets
    • F22B37/201—Suspension and securing arrangements for walls built-up from tubes
    • 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
    • F22B37/20—Supporting arrangements, e.g. for securing water-tube sets
    • F22B37/208—Backstay arrangements

Definitions

  • the invention relates to a waste heat boiler for cooling exhaust gases, in particular of dust-containing exhaust gases, the boiler walls of the boiler having cooling pipe sections, which are flowed through by a cooling medium with a temperature T 1 .
  • the exhaust gas flowing through the boiler is thus cooled by means of the cooling pipe sections through which the cooling medium flows.
  • the cooling tube sections are usually components of a plurality of cooling tubes that run along the boiler walls. It is within the scope of the invention that these cooling pipes form the inner wall of the boiler.
  • Waste heat boilers of the type described above are known in practice in various embodiments. In operation, they are under a gas-side overpressure, so that deformations or buckling of the boiler walls would result if no suitable countermeasures are initiated. Under unfavorable conditions also gas-side negative pressures occur, which are to be considered in the boiler design. The said pressures can not be absorbed in practice by the walls of the waste heat boiler alone. Therefore, the boiler walls are supported by bandages resting against the walls of the boiler. These bandages are usually rolled steel profiles whose size is determined by factors such as gas pressure, the distance between the profiles and the size of the surfaces to be cooled.
  • the invention the technical problem of providing a waste heat boiler of the type mentioned, in which in a simple, effective and reliable manner deformations of the boiler walls can be reduced.
  • the invention teaches a waste heat boiler with the features of independent claim 1.
  • the arranged on the boiler walls of the waste heat boiler cooling tube sections are expediently components of a plurality of cooling tubes.
  • the cooling medium is fed to the cooling pipe sections or cooling pipes via at least one feed line.
  • About at least one return line, the heated in the waste heat boiler cooling medium is discharged again.
  • Adjacent cooling pipe sections are preferably connected to one another via webs.
  • the bulging of the walls of the boiler walls is avoided by means of at least one tubular tie rod.
  • a tubular tie rod expediently consists of metal, in particular of steel. It is recommended that a plurality or a plurality of tubular tie rods are used to stabilize a boiler.
  • the at least one tie rod or the tie rods is / are traversed by a cooling medium, which also has the temperature T 1 .
  • the temperature T 1 of the cooling medium for the cooling tubes or cooling tube sections thus corresponds to the temperature T 1 or substantially the temperature T 1 of the cooling medium for the at least one tubular tie rod.
  • the fact that the temperatures essentially correspond, in particular, means that the temperature difference is not greater than 10 ° C., preferably not greater than 5 ° C.
  • the cooling medium for the cooling tubes or cooling tube sections and / or the cooling medium for the at least one tubular tie rod is expediently boiling water.
  • cooling pipe sections run parallel to each other on the boiler walls. It is further within the scope of the invention that at least a part or the majority of the cooling tube sections are transverse to the flow direction of the exhaust gas or transversely to the Longitudinal direction of the boiler is arranged. Conveniently, adjacent cooling pipe sections are interconnected by webs, which are formed continuously in the cooling pipe section longitudinal direction. According to a preferred embodiment, the boiler wall is thus formed by the cooling tubes or by the cooling tube sections and the webs connecting them.
  • the waste heat boiler is a horizontal waste heat boiler whose longitudinal axis is arranged horizontally or substantially horizontally and in the longitudinal direction through which the exhaust gas flows horizontally or substantially horizontally.
  • the waste heat boiler is, in particular, a waste heat boiler for cooling dusty waste gases.
  • the boiler then has a dust separator in its lower region. In a horizontal waste heat boiler, the dust separator extends in the longitudinal direction of the waste heat boiler.
  • a plurality of tie rods is distributed over the height and / or over the length of the boiler.
  • a plurality of tie rods fluidly connected in series one behind the other and these tie rods are successively flowed through by the cooling medium.
  • a highly recommended embodiment of the invention is characterized in that the cooling medium for the cooling pipe sections is used as the cooling medium for the tie rod (s). Thereafter, therefore, no separate cooling medium is used for cooling the tie rods, but it is as it were a partial flow of the cooling medium used for the cooling pipe sections for cooling the tie rods.
  • a tie rod to the flow line of the Cooling medium connected to the cooling pipe sections and the cooling medium is introduced after flowing through the tie rod or after flowing through a plurality of fluidically connected in series tie rods in the return line of the cooling medium for the cooling pipe sections. It is within the scope of the invention that, when the tie rods are connected in series in series, two tie rods connected in series are flowed through by the cooling medium in the opposite direction.
  • a tie rod connected to a supply line is flowed through by the cooling medium in a first direction and the second tie rod connected to the first tie rod is then flowed through by the flow medium in a second direction opposite to the first and the third tie rod connected to the second tie rod becomes then flows again in the first direction of the cooling medium, etc. ..
  • a plurality of tie rods distributed over the height of the boiler are arranged one above the other and this plurality of tie rods is arranged in particular in a vertical plane or substantially in a vertical plane.
  • a plurality of vertical planes or of substantially vertical planes, each with a plurality of tie rods arranged one above the other are arranged one behind the other in the longitudinal direction of the vessel.
  • two vertical planes or two essentially vertical planes are advantageously each connected in series with flow anchors arranged one above the other in each case and flow through the cooling medium in succession. It is within the scope of the invention that two successively flowed tie rods are connected to each other via a running along the outside of the boiler tubular connecting portion.
  • the exhaust gas in the boiler is under a pressure of 50 to 200 mbar, in particular under a pressure of 70 to 190 mbar.
  • EmpfohleneIER are arranged on the outer sides of the boiler or the boiler walls bandage elements on which the boiler walls can be supported.
  • the boiler walls are fixed to the bandage elements, so that when movements or strains of the boiler walls and the bandage elements are moved or mitgedehnt.
  • the bandage elements are steel profiles and in particular rolled steel profiles. It is recommended that the bandage elements are oriented horizontally and / or vertically.
  • horizontally oriented bandage elements are provided which extend parallel to the longitudinal axis of the boiler and provided vertically oriented bandage elements which extend perpendicular to the longitudinal axis of the boiler.
  • a tubular tie rod engages through the two opposing boiler walls connected by it and thus projects in each case on the outside of the two boiler walls.
  • at least one on the outside projecting tie rod portion of a tie rod is connected via a running along the outside of the boiler tubular connecting portion with another tie rod or with a projecting on the outside of the boiler tie rod portion of this further tie rod.
  • a tie rod has a section arranged in the boiler, which extends from the one boiler inner wall to the opposite boiler inner wall and which has on the outside of each of the two opposite boiler walls each having an outwardly projecting tie rod section.
  • a is a Boiler wall penetrating tie rod not fixed to the boiler wall. The boiler wall can then move or stretch relative to the tie rod.
  • At least one support flange on which a bandage element arranged on this outer side can be supported, is fixed to a tie rod passing through a boiler wall or to a tie rod section projecting from the outside of the boiler wall.
  • a metal support flange which is welded to the metallic tie rod section. It is within the scope of the invention that at least one support flange is fixed to the each of the opposite boiler walls outwardly projecting tie rod sections of the tie rod.
  • the measures according to the invention are particularly suitable for large heat recovery boilers and / or for waste heat boilers with dust separation devices in which revolving bandage systems are not possible.
  • a complex support of the waste heat boiler to a complex outer steel construction in an advantageous manner is no longer required.
  • the force balance for reducing the deformations on the waste heat boiler takes place within the bandage system of the waste heat boiler.
  • the invention is furthermore based on the finding that the cooling medium which is present anyway for the cooling of the boiler walls can also be used for cooling the tubular tie rods according to the invention. It should be emphasized that the success of the invention can be realized simply and with little effort and with cost-effective measures. This also contributes to the fact that the tie rods on the boiler walls need not be fixed or need not be welded.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (13)

  1. Cuve de refroidissement pour le refroidissement de gaz d'échappement, en particulier de gaz d'échappement contenant de la poussière, dans laquelle les parois de la cuve (2) présentent des sections tubulaires de refroidissement (5) dans lesquelles passe un fluide refroidissant d'une température T1, les parois opposées (2) de la cuve étant raccordées entre elles par au moins un tirant de forme tubulaire (10), du fluide refroidissant de température T1 passant dans le tirant de forme tubulaire (10) et un tirant de forme tubulaire (10) traversant les deux parois de cuve (2) opposées qu'il raccorde,
    caractérisée en ce
    qu'est fixée à un tirant (10) traversant une paroi de la cuve (2) ou à une section de tirant (14) de ce tirant (10) saillant sur la face extérieure de la cuve (2) au moins une bride d'appui (15, 16) sur laquelle peut s'appuyer un élément de bandage (3) disposé sur cette face extérieure.
  2. Cuve de refroidissement selon la revendication 1, dans laquelle la cuve de refroidissement est une cuve de refroidissement couchée dont l'axe longitudinal L est disposé horizontalement ou sensiblement horizontalement et où passe horizontalement et sensiblement horizontalement le gaz d'échappement.
  3. Cuve de refroidissement selon une des revendications 1 ou 2, dans laquelle une pluralité de tirants (10) sont disposés répartis sur la hauteur et/ou la longueur de la cuve.
  4. Cuve de refroidissement selon la revendication 3, dans laquelle une pluralité de tirants (10) sont branchés en série les uns derrière les autres du point de vue de la technique d'écoulement et du fluide refroidissant passe dans ces tirants (10) successifs.
  5. Cuve de refroidissement selon une des revendications 1 à 4, dans laquelle le fluide refroidissant pour les sections tubulaires de refroidissement (5) est utilisé comme fluide refroidissant pour le ou les tirants (10).
  6. Cuve de refroidissement selon une des revendications 1 à 5, dans laquelle une pluralité de tirants (10) sont disposés répartis superposés sur la hauteur de la cuve et sont disposés en particulier dans un plan vertical ou un plan sensiblement vertical.
  7. Cuve de refroidissement selon la revendication 6, dans laquelle une pluralité de plans verticaux comportant chacun une pluralité de tirants superposés (10) sont disposés les uns derrière les autres dans le sens longitudinal de la cuve.
  8. Cuve de refroidissement selon une des revendications 6 ou 7, dans laquelle respectivement deux plans verticaux comportant chacun des tirants superposés (10) sont branchés en série du point de vue de la technique d'écoulement et du fluide refroidissement passe successivement.
  9. Cuve de refroidissement selon une des revendications 1 à 8, dans laquelle, sur les faces extérieures des parois de la cuve (2), sont disposés des éléments de bandage (3, 4) sur lesquels les parois de la cuve (2) s'appuient.
  10. Cuve de refroidissement selon une des revendications 1 à 9, dans laquelle est fixée sur le tirant saillant (14) une première bride d'appui (15) sur laquelle l'élément de bandage (3) peut s'appuyer en cas d'expansion de la paroi de la cuve (2) suite à une surpression dans la cuve et dans laquelle est fixée à ce tirant saillant (14) une seconde bride d'appui (16) sur laquelle l'élément de bandage (3) peut s'appuyer en cas de contraction de la paroi de la cuve (2) suite à une dépression dans la cuve.
  11. Cuve de refroidissement selon une des revendications 1 à 10, dans laquelle une plaque de contact (17) est fixée sur l'élément de bandage (13) et l'élément de bandage (3) peut s'appuyer par cette plaque de contact (17) sur la bride d'appui (15, 16) ou les brides d'appui (15, 16).
  12. Cuve de refroidissement selon une des revendications 1 à 11, dans laquelle la section de tirant (14) traverse l'élément de bandage (3) ou la plaque de contact (17) et est mobile par rapport à l'élément de bandage (3) ou à la plaque de contact (17), en particulier dans son sens longitudinal.
  13. Cuve de refroidissement selon une des revendications 1 à 12, dans laquelle un tirant (10) traversant la paroi de la cuve (2) présente sur la face extérieure de la paroi de la cuve (2) une chemise d'étanchéité (19), laquelle chemise d'étanchéité (19) entoure la section de tirant saillante (14) de manière à la rendre hermétique au gaz.
EP09015761.1A 2009-12-19 2009-12-19 Chaudière de récupération de chaleur destinée au refroidissement de gaz d'échappement, notamment de gaz d'échappement contenant de la poussière Not-in-force EP2336635B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP09015761.1A EP2336635B1 (fr) 2009-12-19 2009-12-19 Chaudière de récupération de chaleur destinée au refroidissement de gaz d'échappement, notamment de gaz d'échappement contenant de la poussière
MA33424A MA32445B1 (fr) 2009-12-19 2010-12-13 Chaudiere à chaleur perdue pour refroidissement de gaz d'échappement en particulier de gaz d'échappement contenant de la poussiere.
AU2010257257A AU2010257257B2 (en) 2009-12-19 2010-12-16 Waste-heat boiler for cooling waste gases, in particular particle-laden waste gases
US12/972,586 US8555822B2 (en) 2009-12-19 2010-12-20 Waste-heat boiler for partical-laden gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09015761.1A EP2336635B1 (fr) 2009-12-19 2009-12-19 Chaudière de récupération de chaleur destinée au refroidissement de gaz d'échappement, notamment de gaz d'échappement contenant de la poussière

Publications (2)

Publication Number Publication Date
EP2336635A1 EP2336635A1 (fr) 2011-06-22
EP2336635B1 true EP2336635B1 (fr) 2014-07-30

Family

ID=43477977

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09015761.1A Not-in-force EP2336635B1 (fr) 2009-12-19 2009-12-19 Chaudière de récupération de chaleur destinée au refroidissement de gaz d'échappement, notamment de gaz d'échappement contenant de la poussière

Country Status (4)

Country Link
US (1) US8555822B2 (fr)
EP (1) EP2336635B1 (fr)
AU (1) AU2010257257B2 (fr)
MA (1) MA32445B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4653418A1 (fr) 2024-05-22 2025-11-26 Covestro Deutschland AG Procédé de préparation d'isocyanate organique ayant une durabilité améliorée

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
DE1264447B (de) * 1963-10-08 1968-03-28 Mont Kessel Herpen & Co K G Dampferzeuger mit Bandagen fuer die von Rohren verkleideten Waende
DE1260670B (de) * 1965-03-29 1968-02-08 Duerrwerke Ag Vorrichtung zum Verankern der aus gasdichten Kuehlrohrwaenden bestehenden Ummantelung eines Feuergaszuges
DE2040409A1 (de) * 1970-08-14 1972-02-17 Babcock & Wilcox Ag Vorrichtung zur Abstuetzung gasdicht verschweisster Rohrwaende
JPS6042843B2 (ja) * 1979-07-30 1985-09-25 東洋エンジニアリング株式会社 廃熱ボイラ−
US4305909A (en) * 1979-10-17 1981-12-15 Peabody Process Systems, Inc. Integrated flue gas processing system
US4364910A (en) * 1980-03-13 1982-12-21 Peabody Process Systems, Inc. Integrated flue gas processing method
JPH07269803A (ja) * 1994-03-30 1995-10-20 Mitsubishi Heavy Ind Ltd 排ガスボイラ
US5653282A (en) * 1995-07-19 1997-08-05 The M. W. Kellogg Company Shell and tube heat exchanger with impingement distributor
JP4076014B2 (ja) * 2002-08-30 2008-04-16 バブコック日立株式会社 排熱回収ボイラ及びその据付方法
CN100472131C (zh) * 2003-07-30 2009-03-25 巴布考克日立株式会社 模块单元及构造排热回收锅炉的方法
EP2026000A1 (fr) * 2007-08-10 2009-02-18 Siemens Aktiengesellschaft Générateur de vapeur

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4653418A1 (fr) 2024-05-22 2025-11-26 Covestro Deutschland AG Procédé de préparation d'isocyanate organique ayant une durabilité améliorée
WO2025242718A1 (fr) 2024-05-22 2025-11-27 Covestro Deutschland Ag Procédé de production d'isocyanate organique ayant une durabilité améliorée

Also Published As

Publication number Publication date
AU2010257257A1 (en) 2011-07-07
US20110146595A1 (en) 2011-06-23
EP2336635A1 (fr) 2011-06-22
MA32445B1 (fr) 2011-07-03
US8555822B2 (en) 2013-10-15
AU2010257257B2 (en) 2014-11-27

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