EP3931488B1 - Chambre de combustion pour un générateur de gaz chauds d'une installation de production d'asphalte avec déflecteurs d'air et procédé pour la fixation des déflecteurs d'air - Google Patents

Chambre de combustion pour un générateur de gaz chauds d'une installation de production d'asphalte avec déflecteurs d'air et procédé pour la fixation des déflecteurs d'air Download PDF

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Publication number
EP3931488B1
EP3931488B1 EP19716359.5A EP19716359A EP3931488B1 EP 3931488 B1 EP3931488 B1 EP 3931488B1 EP 19716359 A EP19716359 A EP 19716359A EP 3931488 B1 EP3931488 B1 EP 3931488B1
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EP
European Patent Office
Prior art keywords
combustion chamber
air baffles
tabs
longitudinal direction
fastening
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Application number
EP19716359.5A
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German (de)
English (en)
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EP3931488A1 (fr
Inventor
Denis HECEK
Johann Hauser
Michael KLARER
Oliver Hahn
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Ammann Schweiz AG
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Ammann Schweiz AG
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Priority to PL19716359.5T priority Critical patent/PL3931488T3/pl
Publication of EP3931488A1 publication Critical patent/EP3931488A1/fr
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Publication of EP3931488B1 publication Critical patent/EP3931488B1/fr
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Classifications

    • 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
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F23C3/002—Combustion apparatus characterised by the shape of the combustion chamber the chamber having an elongated tubular form, e.g. for a radiant tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C7/00—Combustion apparatus characterised by arrangements for air supply
    • F23C7/02—Disposition of air supply not passing through burner
    • F23C7/06—Disposition of air supply not passing through burner for heating the incoming air
    • 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
    • F23M5/04—Supports for linings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/03009—Elongated tube-shaped combustion chambers

Definitions

  • the present invention relates to a combustion chamber for a hot gas generator of an asphalt production plant, a hot gas generator comprising the combustion chamber, a plant for the production of asphalt comprising the hot gas generator, a use of the plant for drying and heating granular mineral and/or recycled asphalt material for asphalt production, a method for fastening air baffles in a base body of a combustion chamber for a hot gas generator and a method for connecting air baffles following one another in the longitudinal direction of the combustion chamber in a base body of a combustion chamber for a hot gas generator according to the preambles of the independent claims.
  • drum dryers with rotating drying drums are used, in which a material curtain is formed from the granular material, which is permeated by a hot gas stream.
  • the material to be dried and heated passes through the drying drum in the same direction as the hot gas flow (cocurrent drum dryer) or in the opposite direction to the hot gas flow (countercurrent drum dryer).
  • the hot gas flow is provided by a hot gas generator, which is usually fired with fossil fuels such as natural gas, heating oil or coal dust or, for example, also with wood dust, which has a combustion chamber and a burner includes.
  • the combustion chamber in turn includes a fixed base body lined with air baffles that form the radial boundaries of the combustion chamber of the combustion chamber.
  • secondary air is routed between the inside of the base body and the air baffles, which cools the air baffles and is introduced into the combustion chamber at various points through defined openings in order to obtain a hot air flow that is as homogeneous as possible at a specific temperature at the outlet end of the combustion chamber.
  • the air baffles are held axially displaceably on the inside of the base body with retaining plates welded onto radial webs, and the air baffles that follow one another in the longitudinal direction of the combustion chamber are each welded directly to one another or are firmly connected to one another via welded-on connecting profile pieces.
  • the DE202008012971U1 discloses a combustion chamber for a hot gas generator with the features of the preamble of the first claim.
  • the U.S. 5,363,642 discloses a method for connecting air baffles that follow one another in the longitudinal direction of the combustion chamber in a base body of a combustion chamber.
  • a first aspect of the invention relates to a combustion chamber for a hot gas generator of an asphalt production plant.
  • the combustion chamber comprises a drum-like base body with a burner end and a hot gas outlet end. Viewed in the circumferential direction of the combustion chamber, the base body is lined on its inside with several successive air baffles for secondary air, the outsides of which face the inside of the base body and the insides of which form the boundaries of the combustion chamber of the combustion chamber.
  • the secondary air used is mostly hot gas or process air from associated processes, e.g. raw gas from a black material drum or chimney air.
  • the air baffles can each extend in one piece over the entire length of the combustion chamber, viewed in the longitudinal direction of the combustion chamber, or there can be a plurality of air baffles following one another in the longitudinal direction of the combustion chamber, which is preferred.
  • At least part of the air baffle plates is held in the base body by means of latch-bar arrangements. This is achieved in that fastening tabs protruding radially beyond the inner sides of the air baffles into the combustion chamber are interspersed with fastening bars, which create a form fit in the radial direction pointing towards the center of the combustion chamber between the fastening tabs and the inner sides of the air baffles.
  • the invention makes it possible to remove individual air baffles from the combustion chamber interior without destroying components and then reinstall them, be it to replace them or to install them again, with little expenditure of time, material and work Check and/or clean the secondary air area.
  • Retaining plates are preferably arranged between the fastening bars and the inner sides of the air baffle plates, through which the fastening lugs pass.
  • the use of retaining plates results in the advantage that the surface generating the radial form fit with the inside of the respective air baffle can be designed independently of the fastening bar and can thus be optimized for protection against wear.
  • these holding plates preferably rest without play on the inner sides of the respective air baffle plates, while on their other side they border on the respective fastening bars. In this way, a substantially vibration-free attachment of the air baffles can be achieved.
  • the retaining plates have such a radial distance from these stop surfaces that the air baffles are located between these stop surfaces and can move the holding plates radially by a certain amount of play.
  • This amount of play is preferably at least 3 mm, in particular at least 5 mm. With this amount of play it can be achieved that during manufacture of the combustion chamber the air baffle plates can be easily installed by axially pushing them in from the hot gas outlet end of the combustion chamber. This also makes it possible to prevent or at least significantly reduce stresses in the event of manufacturing inaccuracies and thermal expansion.
  • the fastening tabs are located between opposing delimitations of the air baffle plates running in the longitudinal direction of the combustion chamber Combustion chamber inside, the respective fastening bars and / or retaining plates overlap these limitations to form the radial form fit. In this way, free axial displaceability of the air baffle plates can be ensured in a simple and reliable manner.
  • fastening tabs arranged between the boundaries of the air baffle plates running in the longitudinal direction of the combustion chamber are interspersed with the fastening bars in the circumferential direction of the combustion chamber.
  • the tabs can be made very flat in the circumferential direction of the combustion chamber and the distance between the boundaries of the air baffle plates can be chosen to be correspondingly very small.
  • the base body of the combustion chamber is lined on its inside with a plurality of successive air baffles both in the circumferential direction of the combustion chamber and in the longitudinal direction of the combustion chamber.
  • the air baffles therefore do not extend in one piece over the entire length of the combustion chamber, viewed in the longitudinal direction of the combustion chamber, but rather several air baffles follow one another in the longitudinal direction of the combustion chamber. This has the advantage that the installation/dismantling of the air baffle plates is simplified and only certain areas can be removed in a targeted manner for replacement or control purposes.
  • the air baffles following one another in the longitudinal direction of the combustion chamber are connected to one another so that they expand together during heating and cooling and also contract together again without significant gaps occurring between them.
  • This is advantageously done by means of lug-bar arrangements such that connecting lugs are formed on the opposite delimitations of the successive air baffle plates in the longitudinal direction of the combustion chamber, which project radially into the combustion chamber and enforce a common retaining plate, which creates a form fit in the longitudinal direction of the combustion chamber between the connecting straps.
  • the free ends of the tabs, which emerge from the side of the retaining plate facing the combustion chamber, are penetrated by a connecting bar which secures the retaining plate.
  • the connecting lugs which pass through a common retaining plate, lie on top of one another, as seen in the direction in which the connecting bar is pushed through.
  • the connecting lugs which pass through a common retaining plate, lie next to one another as seen in the direction of the connecting bar.
  • the common retaining plate can be secured with exactly one connecting bar, which passes through each of the connecting straps penetrating the retaining plate, or with several connecting bars, which each pass through each of the connecting straps penetrating the holding plate, or only some of them. Depending on the installation situation, one or the other variant may be more preferable.
  • connecting lugs which pass through a common retaining plate, are next to one another as seen in the direction of the connecting bar, it is provided, for example, that they together form a passage opening for a connecting bar. In this way, the desired connection can also be produced with such arrangements of the connecting straps with a single connecting bar.
  • the connecting tabs are advantageously penetrated by the connecting bars in the longitudinal direction of the combustion chamber or in the circumferential direction of the combustion chamber. Depending on the installation situation, one or the other variant may be more preferable.
  • the fastening bars and/or connecting bars are preferably designed in such a way that they strike at least one of the fastening straps or connecting straps with a stop face in a form-fitting manner in the direction of penetration. In this way, assembly is made easier and a precisely defined installation position can be ensured. In addition, any securing of the bolts is only necessary at one end of the bolts as a result of this configuration.
  • Such a securing of the fastening bolts and/or connecting bolts is advantageously carried out with a material application after the assembly of the bolt exclusively on its surface by welding, in particular by means of one or by means of several welding points, which positively secure the bolt against removal from the intended position.
  • Such a securing method has the advantage over welding with the tabs and/or retaining plates that the material applied to remove the bolt can be simply ground away with a grinding machine and without material removal on other components and the bolt can then be used again.
  • the air baffle plates preferably have a profile running in the longitudinal direction of the combustion chamber, so that on their outsides they form flow channels for the secondary air that extend in the longitudinal direction of the combustion chamber.
  • At least some of the air baffles that follow one another, viewed in the longitudinal direction of the combustion chamber, are designed in such a way, for example by means of a stepped profile, that their facing one another Limitations to the end of the hot air outlet pointing out outlet openings form for secondary air from the respective flow channel extending behind it.
  • the air baffles that follow one another as seen in the longitudinal direction of the combustion chamber, the boundaries of which face one another form the air outlet openings pointing towards the hot air outlet end, are preferably connected to one another by means of latch-bar arrangements in such a way that at the opposite boundaries of the air baffles in the longitudinal direction of the combustion chamber each connection tabs are formed, which protrude into the combustion chamber.
  • These connecting shackles each pass through a common holding plate, which creates a form fit in the longitudinal direction of the combustion chamber between the connecting shackles passing through it and is each secured by means of a connecting bar which passes through the connecting shackles on the side of the holding plate facing the combustion chamber.
  • the connecting lugs which each pass through the common retaining plate, lie next to each other as seen in the direction of penetration of the connecting bar and together form a passage opening for a single common connecting bar which passes through the connecting lugs in the circumferential direction of the combustion chamber. Realizing the connection of the air baffles in this way requires particularly little space in the circumferential direction of the combustion chamber and therefore offers maximum design freedom for the formation of the air outlet openings.
  • At least a part of the combustor longitudinal direction on top of each other following air baffles is profiled in such a way that their mutually facing boundaries adjoin each other essentially steplessly.
  • at least some of these air baffles have air outlet openings pointing toward the combustion chamber for secondary air from a flow channel extending behind them.
  • These air baffles which have air outlet openings pointing towards the combustion chamber, are preferably arranged between the hot gas outlet end and the air outlet openings pointing towards the hot air outlet end, viewed in the longitudinal direction of the combustion chamber. It has been shown that a particularly uniform temperature of the hot gas stream exiting the combustion chamber can be achieved in this way.
  • the air baffles following one another seen in the longitudinal direction of the combustion chamber which are profiled in such a way that their mutually facing boundaries adjoin one another in an essentially stepless manner, are preferably connected to one another by means of latch-bar arrangements.
  • the connection is designed in such a way that connecting lugs are formed in the central areas on the opposite delimitations of the air baffle plates in the longitudinal direction of the combustion chamber, which protrude into the combustion chamber.
  • These connecting lugs each pass through a common retaining plate, which creates a form fit in the longitudinal direction of the combustion chamber between the respective connecting lugs.
  • the retaining plate is secured by means of a connecting bar, which passes through the connecting lugs on the side of the retaining plate facing the combustion chamber.
  • the connecting tabs which each pass through the common retaining plate, are preferably located one above the other as seen in the direction of penetration of the connecting bar and are passed through by a common connecting bar in the longitudinal direction of the combustion chamber.
  • This type of connection of the air baffles that follow one another in the longitudinal direction of the combustion chamber is special easy to manufacture and is preferably realized in the middle of the opposite borders of the same. This results in the advantage that a single tongue-and-bar connection is sufficient for connecting two air baffles that follow one another in the longitudinal direction of the combustion chamber.
  • a second aspect of the invention relates to a hot gas generator for an asphalt production plant, which has a combustion chamber according to the first aspect of the invention and a burner for generating a hot gas flow through the combustion chamber.
  • a third aspect of the invention relates to a plant for the production of asphalt, comprising a hot gas generator according to the second aspect of the invention and a drum dryer, preferably a countercurrent drum dryer, which is or can be charged with hot gas by the hot gas generator.
  • a fourth aspect of the invention relates to the use of the plant according to the third aspect of the invention for drying and heating granular mineral and/or recycled asphalt material in asphalt production.
  • a fifth aspect of the invention relates to a method for fastening air baffles in a base body of a combustion chamber for a hot gas generator.
  • the starting point here is a drum-like base body of a combustion chamber for a hot gas generator, in which fastening tabs protruding radially inward are arranged for fastening air baffles.
  • Air supply plates are arranged in this base body in such a way that when the combustion chamber is finished as intended, they form the radial boundaries of the combustion chamber of the combustion chamber, with the fastening lugs being arranged between opposing boundaries of the air baffles and/or passing through the air baffles, and with the fastening lugs protrude with their free ends radially over the air baffles into the combustion chamber.
  • the free ends of the fastening straps protruding into the combustion chamber are interspersed with fastening bars in such a way that the fastening bars create a form fit in the radial direction between the fastening straps and the air baffle plates.
  • the free ends of the fastening tabs have passage openings into which the fastening bars are pushed.
  • the invention makes it possible to remove individual air baffles from the interior of the combustion chamber without destroying components and then reinstall them with little expenditure of time, material and work, whether to replace them or to check and/or clean the Carry out secondary air area.
  • the air baffles are arranged in the base body in such a way that the fastening tabs protrude into the combustion chamber between opposing boundaries of the air baffles running in the longitudinal direction of the combustion chamber, with the respective fastening bars and/or any existing retaining plates overlapping these boundaries to form the radial form fit.
  • free axial displaceability of the air baffle plates can be ensured in a simple and reliable manner.
  • fastening tabs arranged between the boundaries of the air baffle plates running in the longitudinal direction of the combustion chamber are interspersed with the fastening bars in the circumferential direction of the combustion chamber.
  • the tabs can be made very flat in the circumferential direction of the combustion chamber and the distance between the boundaries of the air baffle plates can be chosen to be correspondingly very small.
  • retaining plates which are penetrated by the fastening tabs.
  • the use of retaining plates results in the advantage that the surface generating the radial form fit with the inside of the respective air baffle can be designed independently of the fastening bar and can thus be optimized for protection against wear.
  • the retaining plates are arranged in such a way that they preferably rest without play on the insides of the respective air baffle plates, while on their other side they adjoin the respective fastening bars. In this way, a substantially vibration-free attachment of the air baffles can be achieved.
  • stop surfaces are present on the inside of the base body, against which the air baffle plates, pointing outwards in the radial direction, strike or can strike.
  • the holding plates are arranged at such a radial distance from these abutment surfaces that the air baffles can move radially by a certain amount of play between these abutment surfaces and the holding plates.
  • This amount of play is preferably at least 3 mm, in particular at least 5 mm. With this amount of play it can be achieved that during manufacture of the combustion chamber the air baffle plates can be easily installed by axially pushing them in from the hot gas outlet end of the combustion chamber. This also makes it possible to prevent or at least significantly reduce stresses in the event of manufacturing inaccuracies and thermal expansion.
  • a sixth aspect of the invention relates to a method for connecting air baffles that follow one another in the longitudinal direction of the combustion chamber in a base body of a combustion chamber for a hot gas generator.
  • air baffle plates are provided, which have connecting lugs that extend from the end to form a combustion chamber delimitation of the combustion chamber protrude from the intended surface of the respective air baffle.
  • air baffles are arranged in a base body of a combustion chamber for a hot gas generator in such a way that the air baffles form the radial boundaries of the combustion space of the combustion chamber when the combustion chamber is finished as intended.
  • the end-side connecting tabs of air baffles following one another in the longitudinal direction of the combustion chamber are opposite and/or adjoin one another.
  • a retaining plate with a through-opening is arranged on the respective opposite and/or adjoining connecting lugs in such a way that the connecting lugs pass through the through-opening of the retaining plate and protrude with their free ends beyond the side of the retaining plate facing the combustion chamber into the combustion chamber.
  • the retaining plates each produce a form fit in the longitudinal direction of the combustion chamber between the connecting straps.
  • the holding plates are each secured by means of a connecting bar which passes through at least one of the connecting lugs on the side of the holding plate facing the combustion chamber.
  • the invention makes it possible to remove individual air baffles from the interior of the combustion chamber without destroying components and then reinstall them with little expenditure of time, material and work, whether to replace them or to check and/or clean the Carry out secondary air area.
  • the fastening and/or connecting bars are preferably positively secured against removal from the as intended position secured.
  • a securing method has the advantage over welding with the tabs and/or retaining plates that the material applied to remove the bolt can be simply ground away with a grinding machine and without destroying or impairing other components and the bolt can then also be used again.
  • FIG. 1 shows a longitudinal section through the hot gas generator and the drum dryer of an asphalt production plant 1 according to the invention in a perspective view obliquely from above.
  • the system 1 comprises a hot gas generator 2 according to the invention and a countercurrent drum dryer 3 for drying and heating granular mineral and/or recycled asphalt material for asphalt production, the internal structure of which is not shown in detail.
  • the combustion chamber 4 comprises a drum-like base body 6 with a burner end A and a hot gas outlet end B.
  • the base body 6 is seen on its inside both in the circumferential direction of the combustion chamber and in the longitudinal direction S of the combustion chamber, with a plurality of successive air baffles 7 (Only some provided with reference numbers) lined, the outside of the inside of the base body 6 facing are and the insides of which form the boundaries of the combustion chamber 8 of the combustion chamber 4 .
  • the air baffles 7 have a profile running in the longitudinal direction S of the combustion chamber, as a result of which they form flow channels for secondary air that extend in the longitudinal direction S of the combustion chamber on their outer sides.
  • retaining plates 12 are arranged between the fastening bars 11 and the insides of the air baffles 7 , through which the fastening lugs 10 pass.
  • the inside of the base body 6 forms abutment surfaces 22 against which the air baffle plates 7 abut or can abut in the radial direction outwards, and the holding plates 12 have such a distance a have to these stop surfaces 22 that the air baffles 7 can move between these stop surfaces 22 and the retaining plates 12 radially by the amount of play d.
  • This play dimension d is about 5 mm in the present case.
  • the fastening lugs 10 protrude into the combustion chamber 8 between opposite delimitations 13 of the air baffle plates 7 running in the longitudinal direction S of the combustion chamber, and the fastening bars 11 and retaining plates 12 overlap these delimitations 13.
  • the fastening bars 11 thereby penetrate the fastening lugs 10 in the circumferential direction of the combustion chamber.
  • the air baffle plates 7 forming an air outlet opening 15 are connected to one another by means of two latch-bar arrangements 9b, so that they can only move axially together in the longitudinal direction S of the combustion chamber in the event of thermal expansion or contraction.
  • these tab-bar assemblies 9b are each realized in that at the opposite boundaries in the longitudinal direction S of the combustion chamber 14 of the successive air baffles 7 in the edge regions connecting lugs 16a, 16b are formed, which protrude into the combustion chamber 8 and pass through a common retaining plate 17 which creates a form fit in the longitudinal direction S of the combustion chamber between the connecting lugs 16a, 16b.
  • the holding plate 17 is secured by means of a connecting bar 18 which passes through a through-opening formed jointly by the two connecting lugs 16a, 16b on the side of the holding plate 17 which faces the combustion chamber 8 .
  • the connecting lugs 16a, 16b lie next to each other as seen in the direction of penetration of the connecting bar 18 and each form one half of the through-opening for the connecting bar 18, which passes through the through-opening formed by the connecting lugs 16a, 16b in the circumferential direction of the combustion chamber.
  • the air baffles 7 that follow one another as seen in the longitudinal direction S of the combustion chamber which form the fourth to sixth circumferential row of air baffles 7 seen downstream from the burner end A, are each connected to one another by means of exactly one latch-bar arrangement 9c, so that they only move axially during thermal expansion or contraction can move together in the longitudinal direction S of the combustion chamber.
  • this latch-bar arrangement 9c is realized in that at the opposite boundaries 14 of the successive air baffles in the longitudinal direction S of the combustion chamber 7 in the middle of these boundaries 14 connecting lugs 21a, 21b are formed, which protrude into the combustion chamber 8 and pass through a common retaining plate 17, which creates a form fit in the longitudinal direction S of the combustion chamber between the connecting lugs 21a, 21b.
  • the holding plate 17 is secured by means of a connecting bolt 18 which passes through both connecting lugs 21a, 21b.
  • the connecting tabs 21a, 21b lie one above the other as seen in the direction of penetration of the connecting bar 18 and are penetrated by the connecting bar 18 in the longitudinal direction S of the combustion chamber.
  • All fastening and connecting bolts 11, 18 are stepped, so that they strike positively in the direction of penetration with stop surfaces 23 formed by the step on fastening lug 10, on connecting lug 21a or on the two connecting lugs 16a, 16b.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Gas Burners (AREA)
  • Road Paving Machines (AREA)
  • Working-Up Tar And Pitch (AREA)
  • Incineration Of Waste (AREA)

Claims (36)

  1. Chambre de combustion (4) pour un générateur de gaz chauds (2) d'une installation de production d'asphalte (1), comprenant un corps de base (6) en forme de tambour comportant une extrémité de brûleur (A) et une extrémité de sortie de gaz chauds (B), lequel, sur sa face intérieure, vu dans le sens circonférentiel de la chambre de combustion, est revêtu d'une pluralité de tôles de guidage d'air (7) successives, dont les faces extérieures sont tournées vers la face intérieure du corps de base (6) et dont les faces intérieures forment les limitations de l'espace de combustion (8) de la chambre de combustion (4),
    caractérisée en ce que
    au moins une partie des tôles de guidage d'air (7) sont maintenues, au moyen d'ensembles languette et verrou (9a), dans le corps de base (6) de telle sorte que les languettes de fixation (10), saillantes radialement sur les faces intérieures des tôles de guidage d'air (7) dans l'espace de combustion (8), sont traversées par les verrous de fixation (11), lesquels créent une liaison par complémentarité de forme dans le sens radial vers le centre de la chambre de combustion entre les languettes de fixation (10) et les tôles de guidage d'air (7).
  2. Chambre de combustion (4) selon la revendication 1, dans laquelle, entre les verrous de fixation (11) et les faces intérieures des tôles de guidage d'air (7), des plaques de maintien (12) sont respectivement agencées, lesquelles sont traversées par les languettes de fixation (10).
  3. Chambre de combustion (4) selon la revendication 2, dans laquelle les plaques de maintien (12) reposent sur les faces intérieures des tôles de guidage d'air (7).
  4. Chambre de combustion (4) selon l'une quelconque des revendications 2 à 3, dans laquelle sur la face intérieure du corps de base (6) se trouvent des surfaces de butée (22) contre lesquelles les tôles de guidage d'air (7) tournées vers l'extérieur butent ou peuvent buter dans la direction radiale, et dans laquelle les plaques de maintien (12) présentent une telle distance (a) par rapport aux dites surfaces de butée (22) que les tôles de guidage d'air (7) peuvent se déplacer radialement entre lesdites surfaces de butée (22) et les plaques de maintien (12) d'une dimension de jeu (d) déterminée, et, en particulier, dans laquelle la dimension de jeu (d) est d'au moins 3 mm, en particulier d'au moins 5 mm.
  5. Chambre de combustion (4) selon l'une quelconque des revendications précédentes, dans laquelle au moins une partie des languettes de fixation (10) font saillie dans l'espace de combustion (8) entre les limitations (13) opposées des tôles de guidage d'air (7) s'étendant dans le sens longitudinal (S) de la chambre de combustion, et les verrous de fixation (11) et/ou les plaques de maintien (12) respectives viennent en prise avec lesdites limitations (13).
  6. Chambre de combustion (4) selon la revendication 5, dans laquelle les languettes de fixation (10) disposées entre les limitations (13) des tôles de guidage d'air (7) s'étendant dans le sens longitudinal (S) de la chambre de combustion sont traversées par les verrous de fixation (11) dans le sens circonférentiel de la chambre de combustion.
  7. Chambre de combustion (4) selon l'une quelconque des revendications précédentes, dans laquelle le corps de base (6) de la chambre de combustion (4), sur sa face intérieure, dans le sens circonférentiel de la chambre de combustion et vu dans le sens longitudinal (S), est revêtu d'une pluralité de tôles de guidage d'air (7) successives.
  8. Chambre de combustion (4) selon la revendication 7, dans laquelle au moins une partie des tôles de guidage d'air (7) successives dans le sens longitudinal (S) de la chambre de combustion sont reliées les unes aux autres au moyen des ensembles languette et verrou (9b, 9c) de telle sorte que, au niveau des limitations opposées des tôles de guidage d'air (7) successives dans le sens longitudinal (S) de la chambre de combustion, des languettes de liaison (16a, 16b ; 21a, 21b) sont formées, lesquelles font saillie dans l'espace de combustion (8) et lesquelles traversent une plaque de maintien (17) commune, laquelle crée une liaison par complémentarité de forme dans le sens longitudinal (S) de la chambre de combustion entre les languettes de liaison (16a, 16b ; 21a, 21b) et laquelle est fixée au moyen d'un verrou de liaison (18), lequel traverse au moins l'une des languettes de liaison (16a, 16b ; 21a, 21b) sur la face de la plaque de maintien (17) adjacente à l'espace de combustion (8).
  9. Chambre de combustion (4) selon la revendication 8, dans laquelle au moins une partie des languettes de liaison (21a, 21b), lesquelles traversent une plaque de maintien (17) commune, sont superposées vues dans le sens de la traversée du verrou de liaison (18) .
  10. Chambre de combustion (4) selon l'une quelconque des revendications 8 à 9, dans laquelle au moins une partie des languettes de liaison (16a, 16b), lesquelles traversent une plaque de maintien (17) commune, sont adjacentes vues dans le sens de la traversée du verrou de liaison (18).
  11. Chambre de combustion (4) selon l'une quelconque des revendications 8 à 10, dans laquelle la plaque de maintien (17) commune est fixée à l'aide d'exactement un verrou de liaison (18), lequel traverse chacune des languettes de liaison (16a, 16b ; 21a, 21b) traversant la plaque de maintien (17).
  12. Chambre de combustion (4) selon la revendication 10 et selon la revendication 11, dans laquelle les languettes de liaison (16a, 16b), lesquelles traversent une plaque de maintien (17) commune et lesquelles sont adjacentes vues dans le sens de la traversée du verrou de liaison (18), forment conjointement une ouverture traversante pour le verrou de liaison (18).
  13. Chambre de combustion (4) selon l'une quelconque des revendications 8 à 12, dans laquelle au moins une partie des languettes de liaison (21a, 21b) sont traversées par les verrous de liaison (18) dans le sens longitudinal (S) de la chambre de combustion.
  14. Chambre de combustion (4) selon l'une quelconque des revendications 8 à 13, dans laquelle au moins une partie des languettes de liaison (16a, 16b) sont traversées par les verrous de liaison (18) dans le sens circonférentiel de la chambre de combustion.
  15. Chambre de combustion (4) selon l'une quelconque des revendications précédentes, dans laquelle au moins une partie des verrous de fixation (11) et/ou des verrous de liaison (18) butent par une surface de butée par complémentarité de forme dans le sens de la traversée contre au moins l'une des languettes de fixation (10) ou des languettes de liaison (16a, 16b ; 21a) .
  16. Chambre de combustion (4) selon l'une quelconque des revendications précédentes, dans laquelle au moins une partie des verrous de fixation (11) et/ou des verrous de liaison (18) sont fixés par complémentarité de forme avec un apport de matière appliqué par soudage exclusivement sur la surface du verrou (11 ; 18) après le montage de ce dernier, en particulier au moyen d'un point ou plusieurs points de soudure (20), pour empêcher le retrait de la position prévue.
  17. Chambre de combustion selon l'une quelconque des revendications précédentes, dans laquelle au moins une partie des verrous de fixation et/ou des verrous de liaison sont fixés par complémentarité de forme par une soudure fabriquée après le montage du verrou, entre le verrou et une languette de fixation ou de liaison et/ou une plaque de maintien, dans la position prévue.
  18. Chambre de combustion (4) selon l'une quelconque des revendications précédentes, dans laquelle au moins une partie des tôles de guidage d'air (7) comportent un profilé s'étendant dans le sens longitudinal (S) de la chambre de combustion de manière à former sur leurs faces extérieures des canaux d'écoulement s'étendant dans le sens longitudinal (S) de la chambre de combustion.
  19. Chambre de combustion (4) selon la revendication 7 et selon la revendication 18, dans laquelle au moins une partie des tôles de guidage d'air (7) successives vues dans le sens longitudinal (S) de la chambre de combustion, sont profilées de telle sorte que leurs limitations (14) adjacentes forment des ouvertures de sortie d'air (15) tournées vers l'extrémité de sortie d'air chaud (B) à partir d'un canal d'écoulement s'étendant derrière celles-ci.
  20. Chambre de combustion (4) selon la revendication 19, dans laquelle les tôles de guidage d'air (7) successives vues dans le sens longitudinal (S) de la chambre de combustion, dont les limitations (14) adjacentes forment les ouvertures de sortie d'air (15) tournées vers l'extrémité de sortie d'air chaud (B), sont reliées les unes entre les autres, au moyen des ensembles languette et verrou (9b), de telle sorte que, sur les limitations (14) opposées, dans le sens longitudinal (S) de la chambre de combustion, des tôles de guidage d'air (7), dans les zones de bord, les languettes de liaison (16a, 16b) sont formées, lesquelles font saillie dans l'espace de combustion (8) et lesquelles traversent respectivement une plaque de maintien (17) commune, laquelle crée une liaison par complémentarité de forme dans le sens longitudinal (S) de la chambre de combustion entre les languettes de liaison (16a, 16b) respectives et laquelle est respectivement fixée au moyen d'un verrou de liaison (18), lequel traverse les languettes de liaison (16a, 16b) respectives sur la face de la plaque de maintien (17) adjacente à l'espace de combustion (8).
  21. Chambre de combustion (4) selon la revendication 20, dans laquelle les languettes de liaison (16a, 16b), lesquelles traversent respectivement la plaque de maintien (17) commune, sont adjacentes vues dans la direction de traversée du verrou de liaison (18) et forment conjointement une ouverture traversante pour un verrou de liaison (18) commun, lequel traverse les languettes de liaison (16a, 16b) dans le sens circonférentiel de la chambre de combustion.
  22. Chambre de combustion (4) selon la revendication 7 et selon la revendication 18, dans laquelle au moins une partie des tôles de guidage d'air (7) successives vues dans le sens longitudinal (S) de la chambre de combustion, sont profilées de telle sorte que leurs limitations (14) sont contiguës les unes aux autres sensiblement en continu, et, en particulier qu'au moins une partie des dites tôles de guidage d'air (7) sont pourvues d'ouvertures de sortie d'air (19) tournées vers l'espace de combustion (8) à partir d'un canal d'écoulement s'étendant derrière celles-ci.
  23. Chambre de combustion (4) selon l'une quelconque des revendications 19 à 21 et selon la revendication 22, dans laquelle les tôles de guidage d'air (7), lesquels sont pourvues d'ouvertures de sortie d'air (19) tournées vers l'espace de combustion (8) à partir d'un canal d'écoulement s'étendant derrière celles-ci, se trouvent, vues dans le sens longitudinal (S) de la chambre de combustion, entre l'extrémité de sortie des gaz chauds (B) et les ouvertures de sortie d'air (15) tournées vers l'extrémité de sortie d'air chaud (B).
  24. Chambre de combustion (4) selon l'une quelconque des revendications 22 à 23, dans laquelle les tôles de guidage d'air (7) successives vues dans le sens longitudinal (S) de la chambre de combustion, lesquelles sont profilées de telle sorte que leurs limitations (14) adjacentes sont contiguës les unes aux autres sensiblement en continu, sont reliées les unes aux autres au moyen des ensembles languette et verrou (9c), de telle sorte que, sur les limitations (14) opposées, dans le sens longitudinal de la chambre de combustion, des tôles de guidage d'air (7), dans les zones centrales, les languettes de liaison (21a, 21b) sont formées, lesquelles font saillie dans l'espace de combustion (8) et lesquelles traversent respectivement une plaque de maintien (17) commune, laquelle crée une liaison par complémentarité de forme dans le sens longitudinal (S) de la chambre de combustion entre les languettes de liaison (21a, 21b) respectives et laquelle est respectivement fixée au moyen d'un verrou de liaison (18), lequel traverse les languettes de liaison (21a, 21b) respectives sur la face de la plaque de maintien (17) adjacente à l'espace de combustion (8).
  25. Chambre de combustion (4) selon la revendication 24, dans laquelle les languettes de liaison (21a, 21b), lesquelles traversent respectivement la plaque de maintien (17) commune, sont superposées, vues dans le sens de la traversée du verrou de liaison (18) et sont traversées par un verrou de liaison (18) commun dans le sens longitudinal (S) de la chambre de combustion.
  26. Générateur de gaz chauds (2) pour une installation de production d'asphalte (1), comprenant une chambre de combustion (4) selon l'une quelconque des revendications précédentes et un brûleur (5) permettant de générer un flux de gaz chauds à travers la chambre de combustion (4).
  27. Installation (1) de production d'asphalte, comprenant un générateur de gaz chauds (2) selon la revendication 26 et un séchoir à tambour (3), en particulier un séchoir à tambour à contre-courant (3), lequel est ou peut être chargé en gaz chaud à l'aide du générateur de gaz chauds (2).
  28. Utilisation de l'installation (1) selon la revendication 27 pour le séchage et le chauffage d'une matière granulaire minérale et/ou d'asphalte de recyclage pour la fabrication d'asphalte.
  29. Procédé de fixation des tôles de guidage d'air (7) dans un corps de base (6) d'une chambre de combustion (4) pour un générateur de gaz chauds (2), comprenant les étapes suivantes :
    a) la fourniture d'un corps de base (6) en forme de tambour d'une chambre de combustion (4) pour un générateur de gaz chauds (2) comportant des languettes de fixation (10) faisant saillie radialement vers l'intérieur pour la fixation des tôles de guidage d'air (7) ;
    b) l'agencement des tôles d'alimentation en air (7) dans le corps de base (6) de telle sorte qu'elles forment les limitations radiales de l'espace de combustion (8) de la chambre de combustion (4), dans lequel les languettes de fixation (10) sont agencées entre les limitations (13) opposées des tôles de guidage d'air (7) et/ou traversent les tôles de guidage d'air (7) et dans lequel les languettes de fixation (10) font saillie radialement sur les tôles de guidage d'air (7) dans l'espace de combustion (8) ;
    c) la traversée des extrémités des languettes de fixation (10) faisant saillie dans l'espace de combustion (8) au moyen des verrous de fixation (11) de telle sorte qu'une liaison par complémentarité de forme est créée dans le sens radial entre les languettes de fixation (10) et les tôles de guidage d'air (7).
  30. Procédé selon la revendication 29, dans lequel les tôles de guidage d'air (7) sont agencées dans le corps de base (6) de telle sorte qu'au moins une partie des languettes de fixation (10) sont agencées entre les limitations (13) de la tôle de guidage d'air (7) s'étendant dans le sens longitudinal (S) de la chambre de combustion.
  31. Procédé selon la revendication 30, dans lequel les extrémités des languettes de fixation (10) faisant saillie dans l'espace de combustion (8), lesquelles sont agencées entre des limitations (13) des tôles de guidage d'air (7) s'étendant dans le sens longitudinal (S) de la chambre de combustion, sont traversées par les verrous de fixation (11).
  32. Procédé selon l'une quelconque des revendications 29 à 31, dans lequel, entre les verrous de fixation (11) et les faces des tôles de guidage d'air (7) adjacentes à l'espace de combustion (8), des plaques de maintien (12) sont respectivement agencées, lesquelles sont traversées par les languettes de fixation (10) respectives.
  33. Procédé selon la revendication 32, dans lequel les plaques de maintien (12) sont agencées de telle sorte qu'elles reposent sur les faces intérieures des tôles de guidage d'air (7).
  34. Procédé selon l'une quelconque des revendications 32 à 33, dans laquelle sur la face intérieure du corps de base (6) sont présentes des surfaces de butée (22) contre lesquelles les tôles de guidage d'air (7) dirigés vers l'extérieur dans le sens radial butent ou peuvent buter, et dans laquelle les plaques de maintien (12) sont agencées à une telle distance (a) par rapport aux dites surfaces de butée (22) que les tôles de guidage d'air (7) peuvent se déplacer radialement entre lesdites surfaces de butée (22) et les plaques de maintien (12) d'une dimension de jeu (d) déterminée, et, en particulier, dans laquelle la dimension de jeu (d) est d'au moins 3 mm, en particulier d'au moins 5 mm.
  35. Procédé de liaison des tôles de guidage d'air (7) successives dans le sens longitudinal (S) de la chambre de combustion dans un corps de base (6) d'une chambre de combustion (4) pour un générateur de gaz chauds (2), comprenant les étapes suivantes :
    a) la fourniture des tôles de guidage d'air (7) comportant des languettes de liaison (16a, 16b ; 21a, 21b), lesquelles, au niveau des extrémités, dépassent la surface déterminée de la tôle de guidage d'air (7) respective destinée à former une limitation de la chambre de combustion ;
    b) l'agencement des tôles de guidage d'air (7) dans le corps de base (6) de la chambre de combustion (4) pour un générateur de gaz chauds (2) de telle sorte que les tôles de guidage d'air (7) forment une limitation radiale déterminée de l'espace de combustion (8) de la chambre de combustion (4), dans lequel les languettes de liaison (16a, 16b ; 21a, 21b) d'extrémité sont opposées et/ou contiguës par rapport aux tôles de guidage d'air (7) successives dans le sens longitudinal (S) de la chambre de combustion ;
    c) l'agencement d'une plaque de maintien (17) comportant une ouverture traversante sur les languettes de liaison (16a, 16b ; 21a, 21b) respectives opposées et/ou contiguës de telle sorte que les languettes de liaison (16a, 16b ; 21a, 21b) traversent l'ouverture traversante de la plaque de maintien (17) et font saillie sur la plaque de maintien (17) dans l'espace de combustion (8), dans lequel la plaque de maintien (17) crée une liaison par complémentarité de forme dans le sens longitudinal (S) de la chambre de combustion entre les languettes de liaison (16a, 16b ; 21a, 21b) ; et
    d) la fixation de la plaque de maintien (17) respective au moyen d'un verrou de liaison (18), lequel traverse l'au moins une des languettes de liaison (16a, 16b ; 21a, 21b) sur la face de la plaque de maintien (17) adjacente à l'espace de combustion (8).
  36. Procédé selon l'une quelconque des revendications 27 à 35, dans lequel au moins une partie des verrous de fixation (10) et/ou des verrous de liaison (16a, 16b ; 21a, 21b) sont fixés par complémentarité de forme avec un apport de matière (20) appliqué par soudage exclusivement sur la surface du verrou après le montage de ce dernier, en particulier au moyen d'un ou plusieurs points de soudure (20), pour empêcher le retrait de la position prévue.
EP19716359.5A 2019-04-04 2019-04-04 Chambre de combustion pour un générateur de gaz chauds d'une installation de production d'asphalte avec déflecteurs d'air et procédé pour la fixation des déflecteurs d'air Active EP3931488B1 (fr)

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US4130364A (en) * 1977-04-28 1978-12-19 Brown Ralph E Method and portable apparatus for treating asphalt paving material
FR2646880A1 (fr) * 1989-05-11 1990-11-16 Snecma Chemise de protection thermique pour canal de post-combustion ou de transition d'un turboreacteur
US5363643A (en) * 1993-02-08 1994-11-15 General Electric Company Segmented combustor
EP1533574A1 (fr) * 2003-11-24 2005-05-25 Siemens Aktiengesellschaft Chambre de combustion pour turbine à gaz avec des éléments de revêtement et procédé pour appliquer ou enlever ces éléments
DE202006014390U1 (de) * 2006-09-15 2006-11-30 Leister Process Technologies Heißluftdüse
DE202008012970U1 (de) * 2008-09-30 2009-02-12 Ammann Schweiz Ag Brennkammer für einen Heissgaserzeuger
DE202008012971U1 (de) * 2008-09-30 2008-12-24 Ammann Schweiz Ag Anlage zur Trocknung und Erhitzung von granuliertem Material für die Asphaltherstellung
KR101128685B1 (ko) * 2011-10-06 2012-03-27 김병구 폐아스콘 재생설비에서의 재생 드라이어장치
FR2986016B1 (fr) * 2012-01-25 2014-03-21 Argumat Dispositif et procede de fabrication de produits enrobes, par exemple de produits enrobes bitumineux, a plaques de protection
JP6261036B2 (ja) * 2013-01-25 2018-01-17 有限会社 トラスト２１ 燃焼装置
JP6315551B2 (ja) * 2014-01-17 2018-04-25 日工株式会社 アスファルト混合物製造装置
CN105951559B (zh) * 2016-05-12 2018-04-13 吉林省嘉鹏集团有限公司 一种就地热再生机用废气集中处理装置
EP3327349A1 (fr) * 2016-11-23 2018-05-30 Benninghoven GmbH & Co.KG Mülheim Générateur de gaz chaud permettant de chauffer un gaz ainsi qu'installation pour la production de bitume pourvue d'un tel générateur de gaz chaud
CN208293356U (zh) * 2018-06-05 2018-12-28 福建泉成机械有限公司 一种再生沥青混合料干燥滚筒

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EP3931488A1 (fr) 2022-01-05
CN113825950A (zh) 2021-12-21
AU2019440120A1 (en) 2021-10-28
ES2952249T3 (es) 2023-10-30
PL3931488T3 (pl) 2023-09-18
FI3931488T3 (fi) 2023-08-08
DK3931488T3 (da) 2023-08-07
WO2020200450A1 (fr) 2020-10-08
AU2019440120B2 (en) 2023-08-31

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