EP3134676A1 - Heat exchanger - Google Patents
Heat exchangerInfo
- Publication number
- EP3134676A1 EP3134676A1 EP16700316.9A EP16700316A EP3134676A1 EP 3134676 A1 EP3134676 A1 EP 3134676A1 EP 16700316 A EP16700316 A EP 16700316A EP 3134676 A1 EP3134676 A1 EP 3134676A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- gas
- distribution box
- protective
- gas distribution
- 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
- 230000001681 protective effect Effects 0.000 claims abstract description 41
- 238000002485 combustion reaction Methods 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 73
- 239000003546 flue gas Substances 0.000 claims description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 239000011819 refractory material Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 description 4
- 238000009423 ventilation Methods 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005315 distribution function Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011214 refractory ceramic Substances 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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 I.
- Heat exchangers with a plurality of heat exchanger tubes extending in parallel over a given length range are typically used in incineration plants, in particular waste incineration plants, where they are usually arranged suspended freely 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.
- 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 or desired locations along the heat exchanger tubes of the
- Heat exchanger in the space between the heat exchanger tubes and the protective panel emerges.
- the air or gas supply into the gap by means of special gas pipes is structurally relatively complex.
- a heat exchanger of the generic type is to be simplified and improved with respect to the protective gas.
- the problem underlying the invention is solved according to the invention by a heat exchanger, as specified by the features of independent claim 1, or by an incinerator with such
- Combustion system comprises a plurality over a predetermined length range parallel heat exchanger tubes which are surrounded over this length range in total by a refractory protective cover.
- Heat exchanger tubes and the protective cover is formed at least one intermediate space and the heat exchanger comprises gas supply means for supplying a protective gas in the at least one intermediate 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 cover.
- 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 rear ventilation.
- the gas distribution box is in
- 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 are based on
- 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.
- Fig. 1 - a side view of a first embodiment of the
- Fig. 2 - a section through the heat exchanger according to the line II-II of Fig. 1; 3 shows a section through a lower part of the heat exchanger according to the line III-III of Fig. 2.
- Fig. 4 is a partial perspective view of the heat exchanger of Fig. 1;
- Fig. 5 - a side view of a second exemplary embodiment of the
- FIG. 6 shows a section through the heat exchanger of FIG. 5 according to the line VI-VI of FIG. 5;
- FIG. 7 shows a section through a lower part of the heat exchanger of FIG. 5 according to the line V11-V1I of FIG. 6;
- FIG. Fig. 8 is a partial perspective view of the heat exchanger of Fig. 5;
- FIG. 9 shows a schematic sectional view of a combustion plant with a heat exchanger arranged in accordance with the invention
- FIG. 10 shows a perspective view of a heat exchanger consisting of several heat exchangers
- the heat exchanger assembly The heat exchanger assembly.
- Heat exchanger substantially the shape of a relative to its width B and height H relatively thin wall (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. 2) and a protective sheath 20 surrounding the tube wall 10 around all four sides 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 a gap 30 remains free on both sides between the tube wall 10 and the protective covering 20 (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, as it were an extension of
- 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 saucetausc herrohren 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 Stützbrüeken 28, with which they sit on the plate mounts.
- FIG. 4 shows the heat exchanger 100 partially in a perspective view.
- the gas distribution box 40 is expediently composed of two parts, which embrace the heat exchanger tubes 1 1 like a comb.
- the gas distribution boxes 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 at its bottom with a plurality of
- Gas outlet openings 42 equipped.
- 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. In practical use is the
- Heat exchanger 100 and the gas distribution box 40 connected via these gas supply pipes 43 and a corresponding line system to a barrier gas or compressed air source.
- Figures 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 opposite of the first
- Embodiment unchanged 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'.
- Gas supply pipes 43 are provided in this embodiment, two gas supply pipes 43 ', which are each aligned with a heat exchanger tube 1 1, wherein the respective heat exchanger tube 1 1 is closed at its lower end and not through the gas distribution box 40' performed ( Figures 5, 7 and 8). , In the illustrated embodiment, this concerns the two educatäussersten
- Heat exchanger tubes 1 therefore, in contrast to the other
- Heat exchanger tubes 1 1 no on the bottom of Gasverteilkastens 40 'protruding terminal ends have 1 la.
- 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
- Connecting ends 1 l a would be omitted.
- FIG. 8 shows the heat exchanger 100 "partially in a perspective view.
- FIG. 9 shows schematically the arrangement of a heat exchanger 100 according to the invention in a flue gas pass Z of a combustion plant VA.
- a piping system for Supply of inert gas and removal of heat exchange medium is denoted by LS I, while a conduit system for supplying heat exchange medium with LS2 is designated.
- 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.
- 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)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL16700316T PL3134676T3 (en) | 2015-01-07 | 2016-01-06 | Heat exchanger |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH00015/15A CH710596A1 (en) | 2015-01-07 | 2015-01-07 | Heat exchanger for an interior of an incinerator. |
PCT/CH2016/000003 WO2016109903A1 (en) | 2015-01-07 | 2016-01-06 | Heat exchanger |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3134676A1 true EP3134676A1 (en) | 2017-03-01 |
EP3134676B1 EP3134676B1 (en) | 2018-08-08 |
Family
ID=52648763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16700316.9A Active EP3134676B1 (en) | 2015-01-07 | 2016-01-06 | Heat exchanger |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP3134676B1 (en) |
CH (1) | CH710596A1 (en) |
DK (1) | DK3134676T3 (en) |
ES (1) | ES2689684T3 (en) |
PL (1) | PL3134676T3 (en) |
WO (1) | WO2016109903A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH714933B1 (en) | 2018-04-26 | 2021-06-15 | Mokesys Ag | Refractory wall, especially for an incinerator. |
NL2021445B1 (en) * | 2018-08-09 | 2020-02-20 | Awect Bv | High pressure heating installation comprising an advanced panel design and cladding thereof |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE496575C (en) * | 1927-08-16 | 1930-04-24 | Bbc Brown Boveri & Cie | Lining for combustion chambers of steam generators, gas turbines or other ovens |
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 |
DK0981015T3 (en) * | 1998-08-20 | 2004-09-20 | Martin Umwelt & Energietech | Steam generator for superheated steam for combustion plants against corrosive exhaust gases |
DE102008060918A1 (en) * | 2008-12-06 | 2010-06-10 | Mvv Umwelt Gmbh | Steam generator for generating superheated steam in a waste incineration plant |
DE102013000424A1 (en) | 2013-01-14 | 2014-07-17 | Martin GmbH für Umwelt- und Energietechnik | Method and device for protecting heat exchanger tubes and ceramic component |
-
2015
- 2015-01-07 CH CH00015/15A patent/CH710596A1/en unknown
-
2016
- 2016-01-06 PL PL16700316T patent/PL3134676T3/en unknown
- 2016-01-06 DK DK16700316.9T patent/DK3134676T3/en active
- 2016-01-06 ES ES16700316.9T patent/ES2689684T3/en active Active
- 2016-01-06 EP EP16700316.9A patent/EP3134676B1/en active Active
- 2016-01-06 WO PCT/CH2016/000003 patent/WO2016109903A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2016109903A1 (en) | 2016-07-14 |
CH710596A1 (en) | 2016-07-15 |
EP3134676B1 (en) | 2018-08-08 |
ES2689684T3 (en) | 2018-11-15 |
PL3134676T3 (en) | 2019-01-31 |
DK3134676T3 (en) | 2018-11-26 |
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