EP0056794B1 - Dispositif pour récupérer la chaleur contenue dans les gaz usés d'une installation de chauffage - Google Patents

Dispositif pour récupérer la chaleur contenue dans les gaz usés d'une installation de chauffage Download PDF

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Publication number
EP0056794B1
EP0056794B1 EP19820890002 EP82890002A EP0056794B1 EP 0056794 B1 EP0056794 B1 EP 0056794B1 EP 19820890002 EP19820890002 EP 19820890002 EP 82890002 A EP82890002 A EP 82890002A EP 0056794 B1 EP0056794 B1 EP 0056794B1
Authority
EP
European Patent Office
Prior art keywords
container
flue gas
liquid
heat
jacketed
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
EP19820890002
Other languages
German (de)
English (en)
Other versions
EP0056794A3 (en
EP0056794A2 (fr
Inventor
Hermann Stranzinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MERIMPEX AG
Original Assignee
MERIMPEX AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AT12881A external-priority patent/AT371235B/de
Priority claimed from AT476881A external-priority patent/AT373988B/de
Application filed by MERIMPEX AG filed Critical MERIMPEX AG
Publication of EP0056794A2 publication Critical patent/EP0056794A2/fr
Publication of EP0056794A3 publication Critical patent/EP0056794A3/de
Application granted granted Critical
Publication of EP0056794B1 publication Critical patent/EP0056794B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/001—Recuperative heat exchangers the heat being recuperated from exhaust gases for thermal power plants or industrial processes

Definitions

  • the invention relates to a device for utilizing the exhaust gas heat of a combustion system, for example an oil heater, with a container having a flue gas supply and a flue gas discharge line and forming a liquid bath for the flue gases, the liquid of the liquid bath being heated by the flue gases being passed through as the heat donor of a heat exchanger is usable for heating a consumer medium.
  • a device for utilizing the exhaust gas heat of a combustion system for example an oil heater
  • a container having a flue gas supply and a flue gas discharge line and forming a liquid bath for the flue gases, the liquid of the liquid bath being heated by the flue gases being passed through as the heat donor of a heat exchanger is usable for heating a consumer medium.
  • a device is known from GB-A-1497 733.
  • the direct treatment of the flue gases with the liquid in the liquid bath results in both extensive transfer of the exhaust gas heat to this liquid and thus the desired heat recovery, as well as flue gas scrubbing, which eliminates the pollutants, in particular S0 2 and CO 2 , from ash. and solid particles, etc.
  • the invention is therefore based on the object of eliminating these deficiencies and of creating a device of the type described at the outset which is particularly effective and is characterized above all by the greatest possible simplicity in construction and handling.
  • This device should be inexpensive to manufacture and particularly well suited for small combustion plants.
  • the invention solves this problem in that at least one double-jacket container, which is itself used as a heat exchanger, serves as the container, the double jacket of which can be acted upon directly with the consumer medium, for example process water or cold air, via corresponding connecting lines.
  • This double-walled container can be manufactured cheaply and enables the smoke gases to be cleaned and cooled with little construction effort. Since it forms the liquid bath for extracting waste heat from the flue gases and the heat exchanger for transferring the recovered heat to the consumer medium in a functional unit, additional intermediate transmission circuits with all their facilities are unnecessary and transmission losses are largely avoided.
  • a step-by-step heat recovery is very effective, according to the invention two or more double-jacket tanks manufactured as prefabricated units can be put together to form a multi-stage system, the liquid baths being connected in series and the double jackets of all tanks being shared by the respective transition from the flue gas discharge line of the lower tank to the flue gas feed line of the upper tank Belonging to the heating circuit.
  • the heat recovery system can be adapted to the respective combustion system or the existing exhaust gas heat quantities in the simplest and cheapest way, with rational series production of the constant structural units being possible.
  • the flue gas supply lines each consist of a pipe socket protruding centrally from the tank bottom and a deflection hood placed on the pipe neck and extending into the vicinity of the tank bottom, with at least one strainer inside the double-walled tank above the mouth of the flue gas pipe but below the liquid level or the like. is arranged.
  • the flue gas supply line which runs completely inside the container, on the one hand reduces heat losses when flue gas is introduced into the container and, on the other hand, allows the flue gas to flow into the liquid bath for as long a liquid contact as possible.
  • the towering pipe socket can also serve as an overflow pipe for the liquid in the container, which ensures reliable operation.
  • the flue gases emerging from the flue gas supply line are also homogenized by the sieve crossing their way up to the liquid level over the cross-section of the container and divided into fine bubbles, so that there is particularly good mixing and intimate contact with the liquid, which both the heat emission as well as the cleaning effect improves.
  • This effect can be influenced as desired by using a plurality of sieves spaced one above the other and possibly differently perforated and adapted to a wide variety of conditions.
  • a collecting container is connected to the bottom of the lowermost double-walled container, into which the flue gas line from the combustion system opens and from which the flue gas supply line leads to the double-walled containers, and on the other hand a blower box or the like is on the last double-walled container with a radial fan for the flue gas extraction. Because of the overflow function of the flue gas supply lines in the lower collecting tank, the excess liquid of all liquid baths can be collected, the liquid regenerated and possibly returned to the baths.
  • the passage of the flue gas through the stages of the liquid baths can in turn be suitably influenced by the upper blower box, the blower only being subjected to flue gases that have already been cooled, which avoids heat losses and makes costly insulation unnecessary. This also saves space, and the lower heat load on the blower also entails lower costs for this blower.
  • the entire system is located on the suction side of the blower, so that there is no need to fear a flue gas leak at possibly leaky points.
  • the collecting container has connections for the inlet and outlet of waste water, the neutralization of already acidic liquid can be achieved in a particularly economical manner by simply passing waste water with its dissolved soap through the collecting container.
  • double jacket containers are combined to form a multi-stage system 1.
  • These double-jacket containers 2 which are produced as prefabricated structural units, are simply placed on top of one another in a required number and connected to one another.
  • the double jackets 3 of these containers 2 are assigned to a common heating circuit via corresponding connecting and connecting lines 4, 5 and can be supplied with process water or another consumer medium.
  • a liquid bath formed by the interior of the container 6 serves as a heat source for heating this consumer medium and is itself heated by the flue gases which are passed through.
  • the flue gas supply line in each container consists of a pipe socket 7, which protrudes centrally from the container bottom 2 ', and a deflection hood 8 placed on this pipe socket 7, which results in the mouth 9 of the flue gas supply line in the container 2 near the bottom.
  • screens 10 are provided at a distance above one another, which distribute the escaping flue gas finely and uniformly in the liquid bath.
  • a collecting container 11 into which the flue gas line of the combustion system opens and which collects the liquid from the liquid baths that overflows through the pipe connection piece 7.
  • a blower box 13 is constructed with a radial blower 14, via which the flue gas discharge line 15 leads into the chimney.
  • the hot flue gas flowing through the flue gas line 12 passes through the flue gas feed line, consisting of the pipe socket 7 and the deflection hood 8, of the lowermost container 2 into the first liquid bath, where it is brought into intimate contact with the liquid through the screens 10 and emits its heat.
  • the flue gas rising from the liquid bath penetrates into the next tank and then from the double-walled tank to the double-walled tank, the flue gas supply line of each forming the flue gas outlet of the previous tank, and on its way to the last double-walled tank releases its useful heat to the liquid baths, which in turn heat the consumer medium in the double coats 3 again. Since flue gas cleaning also takes place at the same time as the heat is released in the liquid baths, the deeply cooled flue gas can also be fed through the discharge pipe 15 to the chimney without hesitation.
  • the liquid that collects in the collecting container becomes chemically acidic, which requires its neutralization.
  • the collecting container 11 has an inlet 16 and an outlet 17, so that, for example, washing water or other soap-containing wastewater can be passed through the collecting container and neutralize the acidic liquid there.
  • a heat-insulated cover 18 prevents the contact of the flue gases with the liquid in the collecting container, as a result of which there is no heat loss, and leaves a funnel-shaped opening 19 in the cover 18 which drips liquid from the pipe socket 7 of the lowermost double jacket container 2 through the cover 18 into the Flow collection container 11.
  • the collecting container 11 also has a double jacket 20, even the residual heat of the liquid in the collecting container 11 can be used, the double jacket 20 of the collecting container via corresponding connections 21 to the common heating circuit. or the double jackets 2 of the container 3 is connected and serves as a preheater.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Treating Waste Gases (AREA)

Claims (5)

1. Dispositif pour récupérer la chaleur des gaz de fumée d'une installation de chauffage, par exemple d'un chauffage à mazout, comportant un récipient qui présente une conduite d'arrivée et une conduite d'évacuation des gaz de fumée et forme un bain de liquide pour lesdits gaz, tandis que le liquide du bain, échauffé par les gaz de fumée qui le traversent, peut être utilisé comme agent dispensateur de chaleur dans un échangeur thermique servant à réchauffer un fluide à consommer, ledit dispositif étant caractérisé par le fait que le récipient prévu est au moins un récipient (2) à double chemise qui est lui-même mis en oeuvre en tant qu'échangeur de chaleur et dont la double chemise (3) peut être placée, par l'intermédiaire de conduites (4, 5) de branchement correspondantes, directement sous l'action du fluide à consommer, par exemple de l'eau de consommation industrielle ou de l'air froid.
2. Dispositif selon la revendication 1, caractérisé par le fait que deux récipients (2) à double chemise ou davantage, fabriqués chacun sous la forme d'une unité de construction préfabriquée, sont placés l'un sur l'autre en une installation (1) à plusieurs étages, tandis que les bains de liquide sont reliés en série l'un derrière l'autre par chaque transition de la conduite d'évacuation des gaz de fumée d'un récipient inférieur à la conduite d'arrivée des gaz de fumée du récipient immédiatement supérieur et que les doubles chemises (3) des récipients (2) appartiennent à un circuit de chauffage commun.
3. Dispositif suivant la revendication 1 ou 2, caractérisé par le fait que les conduites d'arrivée des gaz de fumée se composent chacune d'une tubulure (7) faisant saillie vers le haut au milieu du fond (2') du récipient et d'une cloche de renvoi (8) venant coiffer la tubulure et plongeant jusqu'à proximité du fond (2') du récipient, tandis qu'au moins un tamis (10) ou similaire est disposé à l'intérieur des récipients (2) à double chemise au-dessus de l'embouchure de la cloche de renvoi (8), mais au-dessous du niveau de liquide.
4. Dispositif selon l'une des revendications 1 à 3, caractérisé par le fait que, d'une part, au fond du récipient (2) à double chemise situé le plus bas, est raccordé un récipient collecteur (11), dans lequel débouche la conduite (12) à gaz de fumée de l'installation de chauffage et duquel part la conduite d'arrivée du gaz de fumée aux récipients (2) à double chemise et que, d'autre part, sur le récipient (2) à double chemise placé le plus haut, est monté un caisson de ventilation (13) ou analogue comportant une soufflerie radiale (14) pour l'évacuation des gaz de fumée.
5. Dispositif selon la revendication 4, caractérisé par le fait que le récipient collecteur (11) présente des branchements (16, 17) pour l'admission et l'écoulement d'eaux usées.
EP19820890002 1981-01-15 1982-01-11 Dispositif pour récupérer la chaleur contenue dans les gaz usés d'une installation de chauffage Expired EP0056794B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
AT12881A AT371235B (de) 1981-01-15 1981-01-15 Verfahren und vorrichtung zur ausnutzung der abgaswaerme einer feuerungsanlage
AT128/81 1981-01-15
AT476881A AT373988B (de) 1981-11-06 1981-11-06 Vorrichtung zur ausnutzung der abgaswaerme einer feuerungsanlage
AT4768/81 1981-11-06

Publications (3)

Publication Number Publication Date
EP0056794A2 EP0056794A2 (fr) 1982-07-28
EP0056794A3 EP0056794A3 (en) 1983-02-09
EP0056794B1 true EP0056794B1 (fr) 1984-03-21

Family

ID=25591553

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820890002 Expired EP0056794B1 (fr) 1981-01-15 1982-01-11 Dispositif pour récupérer la chaleur contenue dans les gaz usés d'une installation de chauffage

Country Status (2)

Country Link
EP (1) EP0056794B1 (fr)
DE (1) DE3260069D1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114659402B (zh) * 2022-03-24 2023-07-18 江苏庆峰工程集团有限公司 一种烟气换热器

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3045990A (en) * 1959-04-10 1962-07-24 Jr Thomas J Keenan Draft regulator and scrubber
DE2512233C3 (de) * 1975-03-20 1981-06-04 Fröling GmbH & Co Kessel-Apparatebau, 5063 Overath Vorrichtung zur Ausnutzung der Rauchgase eines brennstoffbeheizten Heizungskessels
GB1497733A (en) * 1975-05-19 1978-01-12 Velegol J Method and apparatus for removing heat and elements from exhaust
US4060399A (en) * 1976-08-30 1977-11-29 Gleason Thomas G Scrubber-cooler tower
DE2816113A1 (de) * 1977-11-21 1979-08-02 Stainless Equipment Co Verfahren und vorrichtung zum nutzen von abfallenergie
DE2813663A1 (de) * 1978-03-30 1979-10-11 Heinz Hoelter Verfahren zur reinigung von abgasen, die hcl, hf, no tief x und so tief 2 enthalten, vorzugsweise zur reinigung von abgasen hinter muellverbrennungsanlagen
US4243177A (en) * 1978-12-08 1981-01-06 Powers Edgar W Chimney heat capturing system
DE2932169A1 (de) * 1979-08-08 1981-02-19 Theodor Neyers Druckluftheizung

Also Published As

Publication number Publication date
EP0056794A3 (en) 1983-02-09
DE3260069D1 (en) 1984-04-26
EP0056794A2 (fr) 1982-07-28

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