EP3134676B1 - Échangeur de chaleur - Google Patents

Échangeur de chaleur Download PDF

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Publication number
EP3134676B1
EP3134676B1 EP16700316.9A EP16700316A EP3134676B1 EP 3134676 B1 EP3134676 B1 EP 3134676B1 EP 16700316 A EP16700316 A EP 16700316A EP 3134676 B1 EP3134676 B1 EP 3134676B1
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EP
European Patent Office
Prior art keywords
heat exchanger
gas
distribution box
gas distribution
protective
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.)
Active
Application number
EP16700316.9A
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German (de)
English (en)
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EP3134676A1 (fr
Inventor
Tobias Kern
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.)
Mokesys AG
Original Assignee
Mokesys AG
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Filing date
Publication date
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Application filed by Mokesys AG filed Critical Mokesys AG
Priority to PL16700316T priority Critical patent/PL3134676T3/pl
Publication of EP3134676A1 publication Critical patent/EP3134676A1/fr
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Classifications

    • 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
    • F22B37/107—Protection of water tubes
    • F22B37/108—Protection of water tube walls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B21/00—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically
    • F22B21/02—Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically built-up from substantially straight water tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22G—SUPERHEATING OF STEAM
    • F22G3/00—Steam superheaters characterised by constructional features; Details of component parts thereof
    • F22G3/008—Protection of superheater elements, e.g. cooling superheater tubes during starting-up periods, water tube screens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls
    • F23M5/085—Cooling thereof; Tube walls using air or other gas as the cooling medium
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0041—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for only one medium being tubes having parts touching each other or tubes assembled in panel form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/002—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using inserts or attachments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
    • F28F9/0275—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes with multiple branch pipes

Definitions

  • the present invention relates to a heat exchanger according to the preamble of independent claim 1.
  • Heat exchangers with a plurality of heat exchanger tubes extending in parallel over a predetermined length range are typically used in incineration plants, in particular waste incineration plants, where they are usually suspended in one or more passes of the incineration plant and serve to cool the flue gases. The energy gained is usually used to generate steam or steam overheating.
  • a generic heat exchanger for incinerators is in the EP 2 754 961 A2 described.
  • the air supply or more generally the supply of inert gas takes place in a space between the heat exchanger tubes and their protective cover by special gas pipes, which extend substantially parallel to the heat exchanger tubes.
  • the ceramic or preferably metal existing gas pipes have at least one outlet opening, preferably a plurality of distributed over its length arranged outlet openings, through which the air or the inert gas at the desired locations along the heat exchanger tubes of the heat exchanger in the space between the heat exchanger tubes and the protective cover exits.
  • EP0981015A1 discloses a heat exchanger according to the prior art.
  • a heat exchanger of the generic type is to be simplified and improved with respect to the protective gas.
  • the heat exchanger according to the invention for an interior of an incineration plant comprises a plurality of heat exchanger tubes extending in parallel over a predetermined length range, which are surrounded overall by a refractory protective covering over this length range. At least one intermediate space is formed between the heat exchanger tubes and the protective shroud, and the heat exchanger includes gas supply means for supplying a shielding gas into the at least one space.
  • the heat exchanger tubes together with them mechanically connecting webs form a tube wall.
  • the at least one intermediate space between the heat exchanger tubes and the protective covering is formed on both sides of the tube wall.
  • the gas supply means comprise a gas distribution box, which has at least one gas inlet opening for the protective gas and a plurality of gas outlet openings, which open into the at least one intermediate space between the heat exchanger tubes and the protective lining.
  • the supply of inert gas by means of a gas distribution box is particularly advantageous and advantageous in terms of design.
  • the gas outlet openings preferably open out on both sides of the tube wall into the at least one intermediate space. This leads on both sides of the pipe wall to a good ventilation.
  • the gas distribution box consists essentially of a refractory material, preferably ceramic material.
  • the gas distribution box is made of steel. Such a gas distribution box is relatively inexpensive and easy to manufacture and assemble.
  • the gas distribution box is arranged with respect to the installation position of the heat exchanger at the lower end of the protective cover. This allows optimal ventilation with a protective gas flow from bottom to top can be achieved.
  • the protective cover comprises a plurality of side by side and one above the other and fixed to the pipe wall plate elements.
  • the plate elements of the protective cover are supported on the gas distribution box.
  • the gas distribution box thus has a mechanical support function in addition to its protective gas distribution function.
  • a plurality of the heat exchanger tubes preferably all heat exchanger tubes, passed through the gas distribution box.
  • the outer cross-sectional dimensions of the gas distribution box substantially coincide with the outer cross-sectional dimensions of the protective casing.
  • the heat exchanger designated as a whole by 100 essentially has the shape of a wall which is relatively thin in relation to its width B and height H (thickness D, Fig. 3 ). Due to this shape, the heat exchanger is also referred to as bulkhead.
  • the heat exchanger 100 comprises a metallic tube wall 10 (FIG. Fig. 2 ) and a pipe wall 10 around all four sides surrounding protective cover 20 made of a refractory material, preferably a ceramic material.
  • the protective covering 20 is arranged at a distance of 1-5 mm, preferably 1-3 mm, to the tube wall 10, so that between the tube wall 10 and the protective covering 20 on both sides a gap 30 remains free (see Fig. 3 ).
  • a gas distribution box 40 is arranged, the outer cross-sectional dimensions substantially coincide with those of the protective cover 20 so that the gas distribution box 40 externally forms an extension of the protective cover 20 as it were.
  • the gas distribution box 40 is made of metal or preferably also of a refractory ceramic material.
  • the tube wall 10 in the interior of the heat exchanger 100 comprises a plurality of substantially parallel heat exchanger tubes 11, which are mechanically connected in pairs by a respective web 12 ( Figures 2 and 3 ).
  • the protective cover 20 is composed of a plurality of juxtaposed and stacked and fixed to the tube wall 10 refractory plate elements 21, wherein the joints between adjacent plate elements are filled with a sealing material 22.
  • the bottom row of the plate elements 21 is supported on the gas distribution box 40 via a sealing material 23.
  • the plate elements 21 are fastened to plate holders 27, which are welded to the webs 12 of the tube wall 10.
  • the plate holders 27 engage in vertically continuous, unspecified grooves of the plate elements 21 a.
  • the Plate elements 21 are provided with support bridges 28, with which they sit on the plate mounts.
  • the existing of the heat exchanger tubes 11 and connecting webs 12 tube wall 10 is sealed by the gas distribution box 40.
  • the terminal ends of the heat exchanger tubes 11 projecting at the bottom of the gas distribution box 40 are designated 11a.
  • the heat exchanger 100 is connected via these connection ends 11a to a line system LS for the supply and / or removal of heat exchange medium (usually water) ( Fig. 9 ).
  • the Fig. 4 shows the heat exchanger 100 partially in perspective view.
  • the gas distribution box 40 is expediently composed of two parts which embrace the heat exchanger tubes 11 like a comb.
  • the gas distribution box 40 is therefore also referred to as a comb box.
  • the gas distribution box 40 serves to introduce protective gas or so-called sealing gas into the interspaces 30 of the heat exchanger 100.
  • the protective or sealing gas in use under slight overpressure is intended to prevent flue gas from penetrating into the interior of the heat exchanger due to unavoidable cracks or other leaks. Normally air is used as the protective or sealing gas.
  • the gas distribution box 40 is provided on its underside with a plurality of gas inlet openings 41 and on its upper side with a plurality of gas outlet openings 42.
  • the gas outlet openings 42 open directly into the intermediate space 30 on both sides of the tube wall 10 and are distributed over the width B of the heat exchanger 100.
  • the gas outlet openings 42 can also be formed as longitudinal slots.
  • the gas inlet openings 41 are distributed over the width B of the heat exchanger 100.
  • gas supply pipes 43 opening into the gas inlet openings 41 are provided on the underside of the gas distribution box 40.
  • the heat exchanger 100 or the gas distribution box 40 is connected via these gas supply pipes 43 and a corresponding line system to a barrier gas or compressed air source.
  • FIGS 5-8 show a slightly modified second embodiment of the inventive heat exchanger, the differences are essentially only in the supply of the sealing gas in the gas distribution box and the consequent formation of the latter.
  • the unchanged compared to the first embodiment components of the heat exchanger are therefore provided with the same reference numerals as in the embodiment of Figures 1-4 ,
  • the heat exchanger of this embodiment is designated as a whole by 100 ', the associated gas distribution box by 40', the gas inlet openings by 41 'and the gas outlet openings by 42'.
  • the heat exchanger tubes 11 laterally staggered gas supply pipes 43 are provided in this embodiment, two gas supply pipes 43 ', which are each aligned with a heat exchanger tube 11, wherein the respective heat exchanger tube 11 is closed at its lower end and not through the gas distribution box 40' performed ( Figures 5 . 7 and 8th ).
  • this relates to the two souptäussersten heat exchanger tubes 11, which therefore, in contrast to the other heat exchanger tubes 11 on the underside of the gas distribution box 40 'protruding terminal ends 11a.
  • the two gas supply pipes 43 'could also be provided over the width of the heat exchanger distributed distributed gas supply pipes, in which case the corresponding number of terminal ends 11a would be omitted.
  • the Fig. 8 shows the heat exchanger 100 'partially in perspective view.
  • Fig. 9 schematically shows the arrangement of a heat exchanger 100 according to the invention in a flue Z of a combustion plant VA.
  • a piping system for Supply of inert gas and removal of heat exchange medium is designated LS1
  • a conduit system for supplying heat exchange medium is designated LS2.
  • the arrangement of the heat exchanger 100 in the flue Z is such that the heat exchanger is flown by flue gas from all four sides, that is, from its two opposite flat sides and the narrow sides between them.
  • a heat exchanger assembly consisting of a plurality of heat exchangers is normally used in the incinerator.
  • Fig. 10 shows such a heat exchanger assembly 1000, which is composed of a plurality of parallel juxtaposed heat exchangers 100 according to the invention.

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)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (11)

  1. Échangeur de chaleur (100; 100') pour un volume intérieur d'une installation d'incinération, comportant plusieurs tubes échangeurs de chaleur (11) qui s'étendent parallèlement sur une zone de longueur (H) donnée et qui sont entourés dans l'ensemble par un habillage de protection réfractaire (20) sur cette zone de longueur, dans lequel au moins un espace intermédiaire (30) est réalisé entre les tubes échangeurs de chaleur (11) et l'habillage de protection (20), et l'échangeur de chaleur comprend des moyens d'alimentation en gaz pour alimenter un gaz de protection dans ledit au moins un espace intermédiaire (30),
    caractérisé en ce que les tubes échangeurs de chaleur (11) forment une paroi de tube (10) conjointement avec des barrettes (12) qui les relient mécaniquement,
    en ce que ledit au moins un espace intermédiaire (30) entre les tubes échangeurs de chaleur (11) et l'habillage de protection (20) est réalisé de part et d'autre de la paroi de tube (10), et
    en ce que les moyens d'alimentation en gaz comprennent un caisson de répartition de gaz (40; 40') qui présente au moins une ouverture d'entrée de gaz (41; 41') pour le gaz de protection et une pluralité d'ouvertures de sortie de gaz (42; 42') qui débouchent dans ledit au moins un espace intermédiaire (30) entre les tubes échangeurs de chaleur (11) et l'habillage de protection (20).
  2. Échangeur de chaleur (100; 100') selon la revendication 1, dans lequel les ouvertures de sortie de gaz (42; 42') débouchent dans ledit au moins un espace intermédiaire (30) de part et d'autre de la paroi de tube (10).
  3. Échangeur de chaleur (100; 100') selon la revendication 1 ou 2, dans lequel le caisson de répartition de gaz (40; 40') est constitué sensiblement d'un matériau réfractaire, de préférence d'un matériau en céramique.
  4. Échangeur de chaleur (100; 100') selon la revendication 1 ou 2, dans lequel le caisson de répartition de gaz (40; 40') est constitué en acier.
  5. Échangeur de chaleur selon l'une des revendications précédentes, dans lequel le caisson de répartition de gaz (40; 40') est agencé à l'extrémité inférieure de l'habillage de protection (20) par rapport à la position de montage de l'échangeur de chaleur.
  6. Échangeur de chaleur (100; 100') selon l'une des revendications précédentes, dans lequel l'habillage de protection (20) comprend une multitude d'éléments en plaque (21) agencés les uns à côté des autres et les uns au-dessus des autres et fixés sur la paroi de tube (10).
  7. Échangeur de chaleur (100; 100') selon la revendication 6, dans lequel quelques-uns au moins des éléments en plaque (21) de l'habillage de protection (20) prennent appui sur le caisson de répartition de gaz (40; 40').
  8. Échangeur de chaleur (100; 100') selon l'une des revendications précédentes, dans lequel une multitude de tubes échangeurs de chaleur (11), de préférence tous les tubes échangeurs de chaleur (11), sont menés à travers le caisson de répartition de gaz (40; 40').
  9. Échangeur de chaleur (100; 100') selon l'une des revendications précédentes, dans lequel, dans un plan perpendiculaire à la direction longitudinale des tubes échangeurs de chaleur (11), les dimensions extérieures de la section transversale du caisson de répartition de gaz (40; 40') coïncident sensiblement avec les dimensions extérieures de la section transversale de l'habillage de protection (20).
  10. Installation d'incinération comportant un échangeur de chaleur (100; 100') selon l'une des revendications précédentes, qui est agencé dans un volume intérieur de l'installation d'incinération de manière à pouvoir être attaqué par un flux de fumées au moins depuis deux côtés opposés.
  11. Installation d'incinération selon la revendication 10, caractérisée en ce qu'elle comprend au moins deux échangeurs de chaleur (100; 100') agencés parallèlement.
EP16700316.9A 2015-01-07 2016-01-06 Échangeur de chaleur Active EP3134676B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16700316T PL3134676T3 (pl) 2015-01-07 2016-01-06 Wymiennik ciepła

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00015/15A CH710596A1 (de) 2015-01-07 2015-01-07 Wärmetauscher für einen Innenraum einer Verbrennungsanlage.
PCT/CH2016/000003 WO2016109903A1 (fr) 2015-01-07 2016-01-06 Échangeur de chaleur

Publications (2)

Publication Number Publication Date
EP3134676A1 EP3134676A1 (fr) 2017-03-01
EP3134676B1 true EP3134676B1 (fr) 2018-08-08

Family

ID=52648763

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16700316.9A Active EP3134676B1 (fr) 2015-01-07 2016-01-06 Échangeur de chaleur

Country Status (6)

Country Link
EP (1) EP3134676B1 (fr)
CH (1) CH710596A1 (fr)
DK (1) DK3134676T3 (fr)
ES (1) ES2689684T3 (fr)
PL (1) PL3134676T3 (fr)
WO (1) WO2016109903A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH714933B1 (de) 2018-04-26 2021-06-15 Mokesys Ag Feuerfeste Wand, insbesondere für einen Verbrennungsofen.
NL2021445B1 (en) * 2018-08-09 2020-02-20 Awect Bv High pressure heating installation comprising an advanced panel design and cladding thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2754961A2 (fr) 2013-01-14 2014-07-16 MARTIN GmbH für Umwelt- und Energietechnik Procédé et dispositif de protection de tubes d'échangeur de chaleur et composant céramique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE496575C (de) * 1927-08-16 1930-04-24 Bbc Brown Boveri & Cie Auskleidung fuer Brennkammern von Dampferzeugern, Gasturbinen oder anderen OEfen
US4426937A (en) * 1980-08-08 1984-01-24 Sietmann Vernon H Heat exchanger furnace
TW296772U (en) * 1994-03-08 1997-01-21 Yutaka Sanbonmatsu Waste burning boiler
PT981015E (pt) * 1998-08-20 2004-09-30 Martin Umwelt & Energietech Gerador de vapor superaquecido para instalacoes de incineracao com gases de combustao corrosivos
DE102008060918A1 (de) * 2008-12-06 2010-06-10 Mvv Umwelt Gmbh Dampferzeuger zur Erzeugung von überhitztem Dampf in einer Abfallverbrennungsanlage

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2754961A2 (fr) 2013-01-14 2014-07-16 MARTIN GmbH für Umwelt- und Energietechnik Procédé et dispositif de protection de tubes d'échangeur de chaleur et composant céramique

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
"Refractory Innovation by Jünger + Gräter, JuSyS Tube Wall Protection - Technolog y", EXPERIENCE AND COMMERCIAL ASPECTS - PREWIN MEETING AT MVV MANNHEIM, 8 June 2011 (2011-06-08)
HANS-GEORG BEUL ET AL.: "Development of a Rear-Ventilated Superheater Refactory System", PREWIN GENERAL ASSEMBLY MEETING, 5 June 2013 (2013-06-05), Norwegen, pages 1 - 5,7,9-29, XP055518454

Also Published As

Publication number Publication date
ES2689684T3 (es) 2018-11-15
CH710596A1 (de) 2016-07-15
DK3134676T3 (en) 2018-11-26
EP3134676A1 (fr) 2017-03-01
PL3134676T3 (pl) 2019-01-31
WO2016109903A1 (fr) 2016-07-14

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