EP0153685B1 - Dispositif de nettoyage des surfaces d'échange de chaleur de la masse intermédiaire d'un échangeur de chaleur de régénération - Google Patents

Dispositif de nettoyage des surfaces d'échange de chaleur de la masse intermédiaire d'un échangeur de chaleur de régénération Download PDF

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Publication number
EP0153685B1
EP0153685B1 EP85101754A EP85101754A EP0153685B1 EP 0153685 B1 EP0153685 B1 EP 0153685B1 EP 85101754 A EP85101754 A EP 85101754A EP 85101754 A EP85101754 A EP 85101754A EP 0153685 B1 EP0153685 B1 EP 0153685B1
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EP
European Patent Office
Prior art keywords
tube
nozzles
heat exchanger
storage element
nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP85101754A
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German (de)
English (en)
Other versions
EP0153685A1 (fr
Inventor
Martin Dipl.-Ing. Frauenfeld
Georg Goldschmidt
Horst Huber
Karlheinz Mock
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Kraftanlagen AG
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Kraftanlagen AG
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Filing date
Publication date
Application filed by Kraftanlagen AG filed Critical Kraftanlagen AG
Priority to AT85101754T priority Critical patent/ATE30771T1/de
Publication of EP0153685A1 publication Critical patent/EP0153685A1/fr
Application granted granted Critical
Publication of EP0153685B1 publication Critical patent/EP0153685B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
    • F28G9/005—Cleaning by flushing or washing, e.g. with chemical solvents of regenerative heat exchanger
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
    • F28G1/00—Non-rotary, e.g. reciprocated, appliances
    • F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/009—Heat exchange having a solid heat storage mass for absorbing heat from one fluid and releasing it to another, i.e. regenerator
    • Y10S165/01—Cleaning storage mass
    • Y10S165/011—Reciprocating cleaner device, e.g. scraper, sprayer

Definitions

  • the invention relates to a device for cleaning the heat-exchanging surfaces of the storage masses of circulating regenerative heat exchangers with at least one row next to one another, essentially tangentially oriented with respect to the axis of rotation of the heat exchanger and movable radially back and forth by a drive in front of the end face of the storage mass in the interior of the heat exchanger a carrier of arranged nozzles which direct the cleaning agent supplied to them from an external cleaning agent source via movable connecting means to fixed media lines onto the storage mass.
  • the high-pressure cleaning nozzles emit sharp, punctiform impinging cleaning jets which, in their entirety, cause the heating surfaces to be impacted and flexing, which means that firmly adhering, poorly water-soluble incrustations and deposits are blasted off and crushed.
  • the high-pressure nozzles designed for higher liquid throughput were connected downstream and preferably also arranged in a plane parallel to the high-pressure nozzles.
  • the nozzles are arranged on a trolley, which is moved radially above the end face of the storage mass during the cleaning process.
  • the intensive cleaning process requires cleaning to be carried out with the heat exchanger out of operation.
  • injector nozzles for a gas under low to medium pressure or gaseous or vaporous cleaning agent in the direction of the emerging jet of nozzles have also already been proposed in such a way that they suck the surrounding heat-exchanging gaseous medium into the tube and with the cleaning agent mixed jets with a speed profile balanced over the injector cross-section to feed the through-channels between the heat-exchanging surfaces (DE-A-26 15 433).
  • Superheated steam with a pressure of at least 4 atm and a temperature of approximately 300 ° C. is preferably provided as the blowing medium.
  • a series of high-pressure nozzles have already been connected downstream of the injector nozzles or these have been arranged within the injector tubes in the region of their outlet mouth.
  • such a device can be used at different times to use the dissolving and blowing process on the one hand as a regular daily cleaning to remove light soiling and on the other hand the high pressure cleaning process alone or combined with the injector nozzles as cleaning at longer intervals to remove heavy soiling .
  • the water jets emitted by the high-pressure nozzles jump off the deposits from the heating surfaces and shred them, while the gaseous or vaporous detergent mixture supplied by the injector nozzles rinses or blows out the blasted, shredded deposits.
  • the device offers the advantage of both operational cleaning and flushing of the heating surfaces, including the air flowing through the heat exchanger or the flue gas as flushing agent, as a result of the injector action of the flushing medium supplied to the injector nozzles in the form of superheated steam or compressed air.
  • so-called soot blowers are known for cleaning boiler heating surfaces, in which a pair of nozzles is arranged on a blowing lance, with which a cooling water stream is first applied to the incrustations through the one nozzle and cracks are formed in these incrustations by embrittlement and contraction, followed by the another nozzle, a pulsed high-speed stream is sprayed, which drives water into the cracks formed in the incrustation and causes the incrustations to flake off due to the explosive force of the water evaporating in the cracks (DE-A-32 40 721).
  • One nozzle of the pair of nozzles is connected to a coaxial outer tube and the other to an inner tube and the blowing lance is supported on a mechanically moved slide.
  • the nozzles are directed backwards in the direction of the boiler wall, and hose lines are interposed between the room-side fixed connections at the ends of the media lines supplying the water as cleaning medium and the connections provided at the outer end of the moving blowing lance.
  • the connection ends of the hose lines are moved towards and away from one another during the movement of the soot blower, so that the size of their sag changes from a maximum to a minimum during their advance inside the boiler. Up to the permissible minimum radius of the hose line used, a free choice of the starting position for the motion sequence is thus possible, while the end position of the connections moved with the slide only depends on the length of the hose line used.
  • the invention is based on the object to provide a device for the reliable cleaning of the storage masses of a circulating regenerative heat exchanger, which using both small amounts of detergent and detergent, operational cleaning in the medium or low pressure range, ie. H. So under gentle strain on the heating surfaces to be cleaned, as well as with the same equipment - for example on the occasion of a boiler overhaul after a larger inspection interval - external cleaning and flushing in the high and low pressure range is possible.
  • the nozzles are provided on at least two spaced apart nozzle heads of a tube which extends essentially radially over half of the end face of the storage mass and is guided in a sealed manner into the interior of the heat exchanger that the radially inner nozzle head has a smaller number of nozzles than the respectively radially outward next nozzle head, that the tube carrying the nozzle heads as an inner tube and an outer tube essentially coaxially surrounding the inner tube as at least in the area of the sealed insertion into the interior of the heat exchanger having double tube is formed, which is connected to two separate external media lines, in which cleaning agents of different or the same type are supplied under different or the same pressure, and that the tubes of the double tube each separately e matched nozzles are connected.
  • the nozzle heads each have a distributor box, connected to the outer tube and substantially at right angles to the tube axis of the storage mass end face, for the cleaning agent of lower pressure and / or a larger amount supplied in the outer tube, which manifold side through a nozzle plate carrying the assigned nozzles is completed.
  • the nozzles of the nozzle heads assigned to the cleaning medium supplied via the inner tube are expediently connected to the inner tube via a branch line which is routed outside the wall of the outer tube and the distribution box, it being possible for the nozzle plate of the distribution box to be supplemented by a further nozzle plate, in which one with the Branch pipe-connected cavity for distributing the cleaning agent of higher pressure and / or a smaller amount is formed on the nozzle (s) arranged on the storage mass side on the further nozzle plate.
  • the movable connecting means are expediently connected to the double pipe carrying the nozzle heads on the one hand and to the room-side fixed connections of the media lines.
  • H. pressure-resistant hoses which are guided and / or held by support means in such a way that their outer end sections are essentially parallel and straight, while the inner middle section connecting the outer end sections is guided on an approximately semicircular arc.
  • the support means can under or overlap one of the two outer end sections of the flexible connecting lines that run approximately in a parallel manner, for. B. in the form of a profiled support rail, which lead the sections of the connecting lines, for example, in a vertical plane.
  • the connecting webs connecting the tab elements are expediently designed in such a way that they secure the flexible connecting lines against lateral displacements, which is possible, for example, by bulging out or bulging the connecting webs to match the line cross-sections.
  • a simplification of the connection of the flexible connecting lines to the double pipe and at the same time a reliable support and guidance of the end of the double pipe located outside the heat exchanger can be achieved in that a box-like collector for the cleaning agent or detergents is switched on between the connecting lines and the outer end of the double pipe is, for example, sliding on runners or on rollers in the longitudinal direction of the double tube to slide back and forth on a rail and is connected to a drive motor via force transmission means, for example a chain, spindle or rack.
  • force transmission means for example a chain, spindle or rack.
  • the motor In the case of a chain drive, the motor is permanently attached, while in the case of a rack and pinion drive, the motor is moved along with the collector and, for this purpose, its electrical supply lines are expediently included in the routing and support of the flexible connecting lines.
  • the direction of movement can be switched over in the end positions of the double pipe feed via conventional limit switches or the like.
  • a cantilevered outwardly projecting support supported on the jacket of the heat exchanger housing for holding the outer end of the tube, its drive and the movable connecting means, i. H. the flexible connecting lines.
  • a radially extending support is expediently also arranged inside the regenerative heat exchanger at a distance from the end face of the storage mass, on which the inner portion of the tube carrying the nozzle heads is guided and held in a rolling or sliding manner is.
  • at least one end of the carrier is expediently held in the housing of the regenerative heat exchanger such that it can be moved longitudinally.
  • the rotating storage mass 1 of the circulating regenerative heat exchanger is enclosed by a housing 3, a portion of which is shown with an inlet or outlet nozzle 5 for one of the heat-exchanging gaseous media.
  • a carrier 7 projects radially into this housing connection piece 5, starting from the housing jacket, in the direction of the axis of rotation of the revolving regenerative heat exchanger.
  • the carrier 7 is slidably supported on a central guide of the housing 9. It is used to hold and guide a double tube, sealed from the outside, through the housing jacket of the preheater, with an outer tube 11 and an inner tube 13, which is guided in a sliding or rolling manner on support arm 15 on support arm 7.
  • the double pipe has two nozzle heads 17, 19.
  • the jacket-side nozzle head 17 is shown as a distributor box for a plurality of rinsing nozzles and the nozzle head 19 provided in the vicinity of the axis of rotation of the storage mass is shown as a distributor for a pair of nozzles. H. the nozzle head 17 is provided with a larger number of nozzles than the nozzle head 19.
  • a further outwardly projecting carrier 31 is attached to the housing jacket, which in turn supports the drive of the cleaning device, the outer guides of the double pipe 11, 13 and flexible connecting lines of the cleaning device carries the cleaning agent supplying media lines 49, 51 including a housing enclosing these flexible connecting lines.
  • the connecting lines each have rectilinear end portions 20, 24 and a central portion 22 connecting the end portions in an arc.
  • FIG. 2 shows the part of the cleaning device arranged outside the heat exchanger housing on a larger scale than the illustration according to FIG. 1.
  • a drive motor 33 is screwed to the carrier 31 and drives a chain 35 which is deflected via a chain wheel held in the bearing 37.
  • a box-shaped collector 39 for the lines supplying the cleaning agent as carrier of the double pipe is moved back and forth on a rail 41 between two end positions, which are arranged by the contact 43a arranged near the deflecting chain wheel 37 and the one at the other end of the Stroke provided contact 43b can be determined.
  • the collector 39 is provided with rollers 45 which run on the rail 41.
  • the associated flexible connecting line section 24 is connected directly to the inner tube 13, which is passed through the collector 39 for this purpose.
  • the other flexible line section 24 connected via the collector to the annular space between the outer and the inner tube lies behind the line section connected to the inner tube and is connected via a coupling 53 to the collector housing and thus to its interior connected.
  • the cleaning agent flows via the interior of the collector 39 to the outlet side opposite the inlet side, from which the outer tube 11 coaxially enclosing the inner tube 13 extends.
  • the above-mentioned housing enclosing the flexible connecting lines has supports 50, 52 formed on the upper and lower sides of profile rails, which overlap or overlap the end sections 20, 24 of the connecting lines.
  • the connecting lines are guided inside the housing on both sides by tab elements 100 which are pivotally connected at their ends to each other in a chain-like manner and are each connected in pairs by connecting webs (not shown).
  • FIG. 3 shows the nozzle head 17 seen in the axial direction of the double pipe 11, 13 on a larger scale than in FIG. 1.
  • the outer tube 11 of the double tube opens into a distributor box 60 on the front side of the nozzle head in the illustration, while a section of the outer tube which supplies the detergent to further nozzles is connected to the rear side of the distributor box in the illustration.
  • the outer tube 11 has a removable cover 62 which allows access to its interior.
  • the distribution box 60 is divided into an upper and a lower part via the flanges 64, 66.
  • the lower part 61 widens conically in the direction of a lower nozzle plate 68. In the case shown, this lower nozzle plate 68 carries four nozzles 70, 72, 74, 76.
  • the interior of the nozzle plate 82 is provided with a cavity, via which the branch line 80 is connected to the nozzles.
  • the nozzle heads are shown with the nozzles pointing downward in association with a storage mass arranged below the cleaning device.
  • an inverted arrangement can also be realized, in which the part of the double pipe, including the nozzle heads, provided inside the housing of the circulating regenerative heat exchanger, instead of hanging on a carrier, is also slid on it and guided with upwardly directed nozzle heads and nozzles provided thereon perform the cleaning of the storage mass from the lower front.
  • FIG. 4 shows the cleaning device according to the invention for heat-exchanging surfaces in connection with a type of revolving regenerative heat exchanger in which the storage mass 201 rests in kinematic reversal of the relationships to the heat exchanger shown in FIG. 1, while air duct stubs 202 lie in front of its opposite end faces circulate one of the heat-exchanging media within the other stationary duct connection 205 connected to the housing.
  • the carrier 31 which is arranged centrally outside the storage mass 201 and supports the cleaning device, is not on a jacket 3 enclosing the storage mass, but rather on a rotating mass inside the hub tube 204 of the storage mass carrier supporting the storage mass 201, the rotating hoods 202 in front of the opposite end faces of the storage mass connecting hub tube 206 supported.
  • the carrier 7 for supporting the pipes 11, 13, including the associated nozzle heads 17, 19, which supply the blowing agent and rinsing agent, is slidably mounted on the outer wall of the rotary hood 202 via a peripheral guide 9.
  • FIGS. 1 and 2 it is sufficient to refer to the explanation of FIGS. 1 and 2 in order to avoid repetitions, especially since the corresponding parts of the cleaning device according to the invention are given the same reference numerals in FIGS. 1, 2 and 4.
  • Modifications of the construction described can be implemented, which relate both to the number and arrangement of the nozzle heads used and to the design and spatial arrangement of the drive of the double pipe and the spatial position of the flexible connecting lines.
  • the device according to the invention can be used to clean the storage mass both during operation and during downtimes, with the choice of different cleaning or rinsing media with different pressure levels being able to adapt to the particular soiling.
  • the device according to the invention is of particular importance for the operational cleaning of circulating regenerative heat exchangers which are used for reheating the clean gases after the raw gas scrubbing. In this case, the system is blown with low pressure and also flushed with high pressure water during operation.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Cleaning In General (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Soil Working Implements (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (12)

1. Dispositif destiné à nettoyer les surfaces d'échange de chaleur des masses accumulatrices dans les échangeurs de chaleur à régénération rotatifs, avec au moins une rangée de tuyères disposées côte à côte sur un tube-support et alignées principalement en sens tangentiel par rapport à l'axe de rotation de l'échangeur de chaleur, ces tuyères se déplaçant par un système d'entraînement, en un mouvement de va-et-vient, en sens radial, devant le côté frontal de la masse accumulatrice à l'intérieur de l'échangeur de chaleur, et garantissant que le fluide à nettoyer qui provient d'une source de fluide extérieure et qui est conduit aux tuyères par des moyens de liaison mobiles raccordés à des conduites de fluide fixes, est amené à la masse accumulatrice de façon adéquate ; ce dispositif étant caractérisé en ce que les tuyères (70, 72, 74, 76 ; 84, 86, 88) sont montées sur au moins deux têtes de tuyères (19 ; 17) écartées l'une de l'autre et attachées à un tube (11 ; 13) qui couvre principalement une moitié du côté frontal de la masse accumulatrice (1), en sens radial, et qui pénètre à l'intérieur de l'échangeur de chaleur (1,3,5) de façon étanche ; caractérisé en ce que la tête de tuyères radiale intérieure (19) comporte toujours moins de tuyères que la tête de tuyères radiale qui suit vers l'extérieur (17) ; caractérisé en ce que le tube portant les têtes de tuyères (19 ; 17) est conçu, au moins dans la zone de passage étanche à l'intérieur de l'échangeur de chaleur, comme un tube double composé d'un tube intérieur (13) et d'un tube extérieur (11) renfermant le tube intérieur, en principe, de façon coaxiale, le tube double étant raccordé à deux conduites de fluides extérieures séparées (49 ; 51) qui amènent des fluides à nettoyer de nature différente ou parallèle, à une pression différente ou pareille ; et caractérisé en ce que les tubes formant le tube double, sont toujours raccordés à des tuyères spécialement adaptées (70-76 et/ou 84-88).
2. Dispositif selon la revendication 1, caractérisé en ce que les têtes de tuyères (19 ; 17) présentent une boîte de distribution (60) raccordée au tube extérieur (11) de façon à être perpendiculaire à l'axe du tube et à saillir vers le côté frontal de la masse accumulatrice, et étant prévue pour le fluide à nettoyer qui est amené par le tube extérieur (11) à une pression inférieure et/ou en quantité plus grande ; la boîte de distribution étant fermée, vers le côté de la masse accumulatrice, par une plaque (68) portant les tuyères correspondantes (70-76).
3. Dispositif selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que les tuyères (84-88) des têtes de tuyères (19 ; 17) qui correspondent au fluide à nettoyer amené par le tube intérieur (13), sont raccordées au tube intérieur (13) par une conduite de dérivation (80) disposée à l'extérieur de la paroi du tube extérieur (11) et de la boîte de distribution (60).
4. Dispositif selon les revendications 2 et 3, caractérisé en ce que l'on ajoute à la plaque de tuyères (68) de la boîte de distribution (60), une autre plaque de tuyères (82) comportant un espace creux qui est relié à la conduite de dérivation (80) et qui sert à distribuer à la (aux) tuyère(s) (84-88) attachée(s) à ladite plaque de tuyères (82), vers le côté de la masse accumulatrice, le fluide à nettoyer amené à une pression supérieure et/ou en quantité inférieure.
5. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que les moyens de liaison mobiles sont réalisés sous forme de tuyaux flexibles qui sont raccordés au tube double (11 ; 13) portant les têtes de tuyères (19 ; 17), d'une part, et aux raccords fixes des conduites de fluide (49 ; 51) dans le local, d'autre part, et qui sont guidés et/ou appuyés par des moyens de support de façon que leurs bouts extérieurs (20, 24) se trouvent principalement en position parallèle et rectiligne, tandis que la partie centrale intérieure reliant les bouts extérieurs, est cintrée à demi-cercle.
6. Dispositif selon la revendication 5, caractérisé en ce que les moyens de support présentent des appuis (50 ; 52) supportant d'en haut et/ou d'en bas les deux bouts extérieurs presque droits et parallèles (20, 24) des tuyaux flexibles de raccordement (20, 22, 24).
7. Dispositif selon la revendication 5 ou 6, caractérisé en ce que l'on a prévu, sur le plan parallèle, des éléments d'éclisse (100) disposés des deux côtés des bouts des tuyaux flexibles de raccordement et reliés l'un à l'autre de façon à être déplaçables comme une chaîne, les éléments d'éclisse opposés des tuyaux de raccordement étant unis deux à deux par des entretoises de jonction qui supportent les tuyaux flexibles de raccordement d'en bas et/ou d'en haut, au moins dans la zone de leurs rayons de courbure extérieurs.
8. Dispositif selon la revendication 7, caractérisé en ce que les entretoises de jonction reliant les éléments d'éclisse (100) sont conçus de façon qu'elles assurent les tuyaux flexibles de raccordement contre des déplacements latéraux.
9. Dispositif selon l'une quelconque des revendications 1 à 8, caractérisé en ce que l'on a disposé entre les moyens de liaison mobiles et le bout extérieur du tube double (11 ; 13), un collecteur en forme de caisson (39) qui est prévu pour le et/ou les fluides à nettoyer et qui coulisse ou roule sur un rail (4j) en un mouvement de va-et-vient en sens longitudinal du tube double (11 ; 13), le collecteur étant relié à un moteur d'entraînement (33) par un moyen de transmission (chaîne 35).
10. Dispositif selon l'une quelconque des revendications 1 à 9, caractérisé en ce que l'on a prévu une poutre (31) en porte à faux, faisant ressaut vers l'extérieur et étant appuyée sur l'enveloppe du stator de l'échangeur de chaleur (3) et qui sert à fixer le bout extérieur du tube (11, 13), le mécanisme d'entraînement de celui-ci (33, 35, 37) et les moyens de liaison mobiles.
11. Dispositif selon l'une quelconque des revendications 1 à 10, caractérisé en ce que l'on a disposé à l'intérieur de l'échangeur de chaleur à régénération, une poutre radiale (7) écartée du côté frontal de la masse accumulatrice (1) et guidant et appuyant la partie du tube (11, 13) aux têtes de tuyères (17, 19) qui se trouve à l'intérieur du stator, de façon que le tube puisse rouler ou coulisser sur cette poutre.
12. Dispositif selon la revendication 11, caractérisé en ce qu'au moins une extrémité de la poutre (7) est supportée dans le stator (3) de l'échangeur de chaleur à régénération de façon qu'elle puisse se déplacer en sens longitudinal.
EP85101754A 1984-02-23 1985-02-16 Dispositif de nettoyage des surfaces d'échange de chaleur de la masse intermédiaire d'un échangeur de chaleur de régénération Expired EP0153685B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85101754T ATE30771T1 (de) 1984-02-23 1985-02-16 Vorrichtung zur reinigung der waermetauschenden flaechen der speichermassen von umlaufenden regenerativ-waermetauschern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3406516A DE3406516A1 (de) 1984-02-23 1984-02-23 Vorrichtung zur reinigung der waermetauschenden flaechen der speichermassen von umlaufenden regenerativ-waermetauschern
DE3406516 1984-02-23

Publications (2)

Publication Number Publication Date
EP0153685A1 EP0153685A1 (fr) 1985-09-04
EP0153685B1 true EP0153685B1 (fr) 1987-11-11

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP85101754A Expired EP0153685B1 (fr) 1984-02-23 1985-02-16 Dispositif de nettoyage des surfaces d'échange de chaleur de la masse intermédiaire d'un échangeur de chaleur de régénération
EP85901403A Expired EP0172244B1 (fr) 1984-02-23 1985-02-21 Installation de nettoyage des surfaces d'echange thermique des masses d'accumulation d'echangeurs thermiques a regeneration circulante

Family Applications After (1)

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EP85901403A Expired EP0172244B1 (fr) 1984-02-23 1985-02-21 Installation de nettoyage des surfaces d'echange thermique des masses d'accumulation d'echangeurs thermiques a regeneration circulante

Country Status (10)

Country Link
US (1) US4649987A (fr)
EP (2) EP0153685B1 (fr)
JP (1) JPH0731033B2 (fr)
AT (1) ATE30771T1 (fr)
DE (1) DE3406516A1 (fr)
DK (1) DK162411C (fr)
ES (1) ES8606630A1 (fr)
FI (1) FI78349C (fr)
PT (1) PT80000B (fr)
WO (1) WO1985003768A1 (fr)

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Also Published As

Publication number Publication date
DK162411B (da) 1991-10-21
WO1985003768A1 (fr) 1985-08-29
EP0153685A1 (fr) 1985-09-04
ES8606630A1 (es) 1986-04-16
PT80000B (pt) 1987-05-29
ATE30771T1 (de) 1987-11-15
DK162411C (da) 1992-03-16
JPS61501280A (ja) 1986-06-26
FI850551L (fi) 1985-08-24
EP0172244B1 (fr) 1987-12-23
EP0172244A1 (fr) 1986-02-26
DE3406516C2 (fr) 1992-03-19
FI850551A0 (fi) 1985-02-11
JPH0731033B2 (ja) 1995-04-10
US4649987A (en) 1987-03-17
PT80000A (de) 1985-03-01
FI78349B (fi) 1989-03-31
ES540656A0 (es) 1986-04-16
DK82085A (da) 1985-08-24
DK82085D0 (da) 1985-02-22
DE3406516A1 (de) 1985-08-29
FI78349C (fi) 1989-07-10

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