EP0411112A1 - Echangeur de chaleur. - Google Patents

Echangeur de chaleur.

Info

Publication number
EP0411112A1
EP0411112A1 EP90904267A EP90904267A EP0411112A1 EP 0411112 A1 EP0411112 A1 EP 0411112A1 EP 90904267 A EP90904267 A EP 90904267A EP 90904267 A EP90904267 A EP 90904267A EP 0411112 A1 EP0411112 A1 EP 0411112A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
clean gas
flow channels
side walls
exchanger according
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
EP90904267A
Other languages
German (de)
English (en)
Other versions
EP0411112B1 (fr
Inventor
Dieter Wallstein
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.)
WALLSTEIN Dieter
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of EP0411112A1 publication Critical patent/EP0411112A1/fr
Application granted granted Critical
Publication of EP0411112B1 publication Critical patent/EP0411112B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F28D21/0005—Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
    • F28D21/0008—Air heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/006—Constructions of heat-exchange apparatus characterised by the selection of particular materials of glass

Definitions

  • the invention relates to a heat exchanger for cooling hot raw gas with aggressive constituents and for heating the raw gas purified to clean gas, the housing of which is formed by two side walls and an upper and lower tube bottom, the side walls being inside to form flow channels Partitions are assigned and in the upper and lower tube sheets the ends of a plurality of exchanger tubes arranged parallel to one another and to the side walls are inserted and the hot raw gas flows through the exchanger tubes and the clean gas through the housing transversely to the exchanger tubes and the housing and the partition walls preferably from highly corrosion-resistant sheets and the exchanger tubes are preferably made of glass, and such heat exchangers are used in particular in exhaust gas cleaning systems.
  • the The invention is based on the object of improving a heat exchanger of the generic type in such a way that the desired heating of the side walls and thus a reliable avoidance of corrosive condensations is ensured with comparatively little expenditure on equipment.
  • the clean gas outlet of the heat exchanger is connected to the flow channels of the two side walls via at least one clean gas line each.
  • the invention follows the guiding principle of leading clean gas heated up again by the heat exchanger through the flow channels along the side walls, i.e. Two partial flows are removed from the heated clean gas in the clean gas outlet of the heat exchanger and returned to the flow channels on the side walls.
  • the side walls and also their partitions used to form the flow channels are only exposed to clean gas, so that the risk of corrosion is definitely excluded.
  • the clean gas lines can open into the upper and / or lower areas of the flow channels, each in an adaptation to the existing conditions.
  • both in the upper a] s and in the Appropriate branch lines are provided in the lower region of the flow channels.
  • the clean gas lines are returned in the direction of the clean gas inlet of the heat exchanger, so that the branched clean gas flows flow through the flow channels in the same direction as the clean gas to be heated up the heat exchanger.
  • the flow channels are provided on the end face with outlet openings for the returned clean gas, so that this is added to the heated clean gas again at the outlet of the heat exchanger.
  • the mouthpieces of the clean gas lines on both sides can be different in cross-section and / or shape and / or position for the upper and / or lower regions of the flow channels, so that an optimal adaptation to the existing requirements can be made.
  • the flow channels advantageously extend over the entire depth of the side walls and their partitions, so that these are acted upon over the entire surface and thus a uniform temperature distribution is ensured.
  • a temperature detection element for example a temperature sensor.
  • the arrangement of such fans can be expedient if the power of the existing clean gas blower should not be sufficient for the return of the clean gas into the flow channels.
  • the clean gas lines with throttle valves or the like. be equipped.
  • Figure 1 is a partially sectioned view of a 2 shows a top view of FIG. 1 and FIG. 3 shows a side view of FIG. 1.
  • the housing of the heat exchanger is formed by the two side walls 3, which simultaneously represent the outer walls, and an upper and lower tube plate 8, 9.
  • the side walls 3 are assigned 14 partition walls 2 inside to form flow channels.
  • the ends of a multiplicity of exchanger tubes 1 arranged parallel to one another and to the side walls 3 are inserted in the upper and lower tube sheets 8, 9.
  • the hot raw gas flows through the exchanger tubes 1, while the cleaned clean gas flows through the housing of the heat exchanger transversely to the exchanger tubes 1.
  • the side walls 3 and the partitions 2 and the upper and lower tube sheets 8, 9 are preferably made of highly corrosion-resistant sheets, while the exchanger tubes 1 are preferably made of glass. However, it is also possible to manufacture them from graphite or plastic, for example.
  • the clean gas outlet of the heat exchanger is connected to the flow channels 14 of the two side walls 3 via at least one clean gas line 4 each. Part of the heated clean gas, which leaves the heat exchanger and is returned via the inlet openings 13 into the flow channels 14 between the side walls 3 and the partition walls 2, so that the side walls 3 and the partition walls are heated with a uniform temperature distribution.
  • the clean gas lines 4 open into the upper and lower regions of the flow channels 14, specifically the upper clean gas inlet into the flow channels 14 is designated by 12 and the lower clean gas inlet is designated by 11.
  • the flow channels 14 have outlet openings 10 for the returned clean gas on the end face, so that this is introduced again into the clean gas outlet of the heat exchanger and is discharged with the main stream of the clean gas, for example to a chimney.
  • the flow channels 14 for the branched-off clean gas extend over the entire depth of the side walls 3 and their partitions 2, so that full-surface application and thus uniform temperature distribution is ensured.
  • Heaters 5 are present in the clean gas lines 4, so that the two branched clean gas streams are reheated, if necessary, can.
  • the control is advantageously carried out via temperature detection elements 7, for example in the form of temperature sensors.
  • fans 6 can be arranged in the clean gas lines 4, which can advantageously be regulated depending on the need for volume and pressure.
  • the fans 6 can be dispensed with if the power of the existing clean gas blower is sufficient to also convey the two branched clean gas streams through the flow channels 14 via the clean gas lines 4.
  • Throttle valves 15 or the like are in the clean gas lines 4. provided so that control of the returned clean gas flows can be carried out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

Un échangeur de chaleur sert à refroidir du gaz brut chaud contenant des composants agressifs et à réchauffer le gaz brut purifié. L'échangeur de chaleur comprend un logement formé de deux parois latérales, une plaque tubulaire supérieure et une plaque tubulaire inférieure. A l'intérieur des parois latérales sont agencées des cloisons qui forment des canaux d'écoulement. Les extrémités d'une pluralité de tubes échangeurs de chaleur parallèles entre eux et par rapport aux parois latérales sont montées dans les plaques tubulaires inférieure et supérieure. Le gaz brut chaud s'écoule dans les tubes échangeurs de chaleur et le gaz purifié traverse le logement transversalement aux tubes échangeurs de chaleur. D e préférence, le logement et les cloisons sont faits en tôles très résistantes à la corrosion et les tubes échangeurs de chaleur sont faits en verre. Afin d'améliorer un échangeur de chaleur de ce type de façon à assurer le chauffage recherché des parois latérales et d'éviter de manière fiable la condensation de matières corrosives, avec une structure relativement simple, la sortie de gaz purifié de l'échangeur de chaleur est en communication par au moins un conduit (4) de gaz purifié avec les canaux d'écoulement (14) agencés dans les deux parois latérales (3). Les conduits (4) de gaz purifié s'ouvrent dans les régions supérieure et/ou inférieure des canaux d'écoulement (14). Les canaux d'écoulement (14) sont pourvus sur leur face frontale d'orifices de sortie (10) du gaz purifié recyclé.
EP90904267A 1989-02-20 1990-02-19 Echangeur de chaleur Expired - Lifetime EP0411112B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3905140 1989-02-20
DE3905140A DE3905140A1 (de) 1989-02-20 1989-02-20 Waermetauscher
PCT/EP1990/000267 WO1990009555A1 (fr) 1989-02-20 1990-02-19 Echangeur de chaleur

Publications (2)

Publication Number Publication Date
EP0411112A1 true EP0411112A1 (fr) 1991-02-06
EP0411112B1 EP0411112B1 (fr) 1994-06-15

Family

ID=6374505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90904267A Expired - Lifetime EP0411112B1 (fr) 1989-02-20 1990-02-19 Echangeur de chaleur

Country Status (4)

Country Link
EP (1) EP0411112B1 (fr)
AT (1) ATE107409T1 (fr)
DE (2) DE3905140A1 (fr)
WO (1) WO1990009555A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4030250A1 (de) * 1990-09-25 1992-03-26 Dieter Dipl Ing Wallstein Waermetauscher
FR2702831B1 (fr) * 1993-03-17 1995-05-24 Faudat Procédé et dispositif de refroidissement de l'enceinte d'un échangeur thermique.
CN112728974A (zh) * 2021-01-04 2021-04-30 洛阳瑞昌环境工程有限公司 一种防积灰堵塞玻璃管换热器及其应用

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE315672C (fr) *
GB495093A (en) * 1936-03-23 1938-11-04 Hugh Harford Improvements in gas fired geyser type water heaters
IT1210975B (it) * 1981-01-12 1989-09-29 Luigi Benito Trojani Preriscaldatore di aria, a recupero di calore, dai fumi di scarico in camini e simili.
DE3142485C2 (de) * 1981-10-27 1983-11-17 Langbein & Engelbracht GmbH & Co KG, 4630 Bochum Glasrohrwärmetauscher
DE3333057C1 (de) * 1983-09-14 1985-04-18 Peter Kaehmann Glasrohr-Waermetauscher
DE3534822A1 (de) * 1985-09-30 1987-04-16 Langbein & Engelbrecht Glasrohrwaermetauscher

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9009555A1 *

Also Published As

Publication number Publication date
EP0411112B1 (fr) 1994-06-15
DE59006114D1 (de) 1994-07-21
DE3905140A1 (de) 1990-08-23
ATE107409T1 (de) 1994-07-15
WO1990009555A1 (fr) 1990-08-23

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