EP0056794A2 - 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
EP0056794A2
EP0056794A2 EP82890002A EP82890002A EP0056794A2 EP 0056794 A2 EP0056794 A2 EP 0056794A2 EP 82890002 A EP82890002 A EP 82890002A EP 82890002 A EP82890002 A EP 82890002A EP 0056794 A2 EP0056794 A2 EP 0056794A2
Authority
EP
European Patent Office
Prior art keywords
container
flue gas
liquid
double
heat
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP82890002A
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German (de)
English (en)
Other versions
EP0056794B1 (fr
EP0056794A3 (en
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 method for utilizing the exhaust gas heat of a combustion system, for example an oil heater, after which the flue gases are passed through a heat exchanger before they flow outside through a chimney, and to a device for carrying out this method.
  • the exhaust gas temperature can only be used from the outset up to the limit temperature determined by the chimney, which means that the efficiency of the heat recovery that can be achieved must remain very low. Flue gas cleaning as such in turn requires its own complex equipment and therefore remains the same in large systems reserved so that by the flue gases that flow into the environment are heavily polluted.
  • the invention is therefore based on the object of eliminating these deficiencies and of specifying a method of the type described at the outset according to which particularly effective use of exhaust gas heat can be achieved and at the same time a high-quality flue gas cleaning is ensured. Furthermore, a device is to be created with which this method can be carried out in a simple manner and without great effort.
  • the flue gases are passed through a liquid bath for heat emission, which in turn is used as a heat donor of the heat exchanger.
  • the direct treatment of the flue gases with cleaning liquid results in a large transfer of the exhaust gas heat to the cleaning liquid and thus in the desired heat recovery, and on the other hand the cleaning liquid ensures, so to speak, a flue gas scrubbing, which eliminates the pollutants, especially S0 2 and CO 2 , of ash and solid particles, etc.
  • the flue gases can also be subcooled accordingly, which enables heat recovery with high efficiency.
  • a suitable heat exchanger charged with the cleaning liquid heated by the flue gases the recovered heat can be continuously transferred to a heating circuit and supplied to a consumer, for example a water heater, underfloor heating, an air preheating device and the like.
  • an alkaline liquid (pH> 7), for example lime, is used for the liquid bath milk, used, especially the harmful components, such as S0 2 , Co2 and the like. separate safely from the flue gases.
  • the cleaning action of the liquid bath makes its liquid acidic, and according to the invention waste water from a household, such as washing water, can be added for neutralization.
  • This wastewater is available everywhere anyway and, with the dissolved soap, enables a particularly cheap neutralization of the acidified liquid bath.
  • a double jacket container is suitable for carrying out the method according to the invention, the internal liquid of which is connected to a flue gas supply and a flue gas outlet for the liquid bath of the flue gases and whose double jacket can be acted upon by a connecting medium with a consumer medium, for example process water or cold air.
  • This double-walled container enables the flue gases to be cleaned and cooled with little design effort and at the same time serves as a heat exchanger for removing the heat recovered from the flue gases.
  • At least one sieve or the like is in the interior of the double jacket container below the liquid level but above the mouth of the flue gas supply line. intended.
  • the smoke gases escaping from the flue gas supply line make their way up sieve crossing the liquid level is evened out 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 improves both the heat emission and the cleaning effect.
  • This effect can be influenced as desired by using several screens spaced one above the other and possibly differently perforated and adapted to a wide variety of conditions.
  • the flue gas supply line consists of a pipe socket, preferably protruding centrally from the bottom of the container, and a deflection hood or the like placed on the pipe socket. exists, wherein the deflection hood leaving an annular space between itself and the pipe socket extends into the vicinity of the tank bottom, and when the flue gas line from the combustion system opens into a collecting tank connected to the bottom of the double jacket tank.
  • This flue gas supply line which runs completely inside the container, on the one hand reduces heat losses when the flue gas is introduced into the container and, on the other hand, allows the flue gas to flow into the liquid bath close to the ground 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 excess liquid is then collected in the collecting container, can be regenerated there and possibly returned to the liquid bath.
  • 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 through the collecting container.
  • the double-jacket container is manufactured as a prefabricated structural unit, with two or more double-jacket containers being able to be put together to form a multi-stage system.
  • 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.
  • a reservoir need not be set at such a j .Mehrinstrom only at the lowermost double-shell vessel as the pipe socket, both the burnt gas passage from one container to another to take and gradually form of each container a from container to container until eventually leading into the collecting overflow. Regardless of different liquid supplies to the individual containers or of a different condensation formation and the like. is always provided for the desired liquid bath and flue gas passage.
  • blower box or the like on the last double jacket container. constructed with a radial fan for the flue gas discharge, the passage of the flue gas through the stages of the liquid baths can be influenced in a suitable manner.
  • the blower required for this is only supplied with already cooled flue gases, which avoids heat loss 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.
  • 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 connected and connected accordingly.
  • Lines 4, 5 are assigned to a common heating circuit 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 evenly in the liquid bath.
  • a collecting container 11 into which the flue gas line of the combustion system opens and which collects the liquid of the liquid baths that overflows via the pipe socket 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 gas flowing through the gas conduit 12 hot flue gas passes over the out pipe socket 7 and deflection hood 8 existing flue gas inlet of the lowermost container 2 into the first fluid bath where it is brought by the wires 1 0 with the liquid in intimate contact and gives up its heat.
  • the flue gas rising from the liquid bath penetrates into the next container and then from Double-walled tank to double-walled tank, whereby the flue gas supply line of one forms the flue gas discharge line of the previous tank, and on its way to the last double-walled tank gives off its usable heat to the liquid baths, which in turn heat the consumer medium in the double jackets 3. 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 wastewater containing soap can be passed through the collecting container and neutralizes 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 combined 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 being connected via corresponding connections 21 to the common heating circuit or the double jackets 2 of the container 3 and serving as a preheater .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Treating Waste Gases (AREA)
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
AT128/81 1981-01-15
AT12881A AT371235B (de) 1981-01-15 1981-01-15 Verfahren und vorrichtung zur ausnutzung der abgaswaerme einer feuerungsanlage
AT4768/81 1981-11-06
AT476881A AT373988B (de) 1981-11-06 1981-11-06 Vorrichtung zur ausnutzung der abgaswaerme einer feuerungsanlage

Publications (3)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114659402A (zh) * 2022-03-24 2022-06-24 江苏庆峰工程集团有限公司 一种烟气换热器

Citations (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
DE2512233A1 (de) * 1975-03-20 1976-09-30 Froeling Kessel Behaelter Appa Verfahren und vorrichtung zur waermerueckgewinnung aus rauchgasen
US4060399A (en) * 1976-08-30 1977-11-29 Gleason Thomas G Scrubber-cooler tower
GB1497733A (en) * 1975-05-19 1978-01-12 Velegol J Method and apparatus for removing heat and elements from exhaust
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

Patent Citations (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
DE2512233A1 (de) * 1975-03-20 1976-09-30 Froeling Kessel Behaelter Appa Verfahren und vorrichtung zur waermerueckgewinnung aus rauchgasen
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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114659402A (zh) * 2022-03-24 2022-06-24 江苏庆峰工程集团有限公司 一种烟气换热器

Also Published As

Publication number Publication date
DE3260069D1 (en) 1984-04-26
EP0056794B1 (fr) 1984-03-21
EP0056794A3 (en) 1983-02-09

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