EP0135188A2 - Echangeur de chaleur à tubes en verre - Google Patents

Echangeur de chaleur à tubes en verre Download PDF

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Publication number
EP0135188A2
EP0135188A2 EP84110858A EP84110858A EP0135188A2 EP 0135188 A2 EP0135188 A2 EP 0135188A2 EP 84110858 A EP84110858 A EP 84110858A EP 84110858 A EP84110858 A EP 84110858A EP 0135188 A2 EP0135188 A2 EP 0135188A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
glass tube
tube heat
clean gas
gas
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
EP84110858A
Other languages
German (de)
English (en)
Other versions
EP0135188B2 (fr
EP0135188B1 (fr
EP0135188A3 (en
Inventor
Peter Kähmann
Leopold Schmidt
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.)
Individual
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6208976&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0135188(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority to AT84110858T priority Critical patent/ATE26885T1/de
Publication of EP0135188A2 publication Critical patent/EP0135188A2/fr
Publication of EP0135188A3 publication Critical patent/EP0135188A3/de
Application granted granted Critical
Publication of EP0135188B1 publication Critical patent/EP0135188B1/fr
Publication of EP0135188B2 publication Critical patent/EP0135188B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F23J15/08—Arrangements of devices for treating smoke or fumes of 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 glass tube heat exchanger, in particular for heating the washed clean gas stream of an exhaust gas cleaning system with hot raw gas, in which the hot raw gas is passed through the glass tubes and the washed clean gas through the heat exchanger housing, the outer walls of which come into contact with the clean gas are double-walled and heated are.
  • Glass tube heat exchangers of the type mentioned are used, for example, in the exhaust gas purification of waste incineration plants, which are known to contain a particularly large number of pollutants and must not be emitted when not cleaned.
  • glass tube heat exchangers are used, because the material glass has been found to be particularly resistant to corrosive components contained in the raw gas, and - when even in smaller quantities - are present in the clean gas.
  • Those parts of the glass tube heat exchanger that cannot be made of glass are made of corrosion-resistant metallic material, such as chromium-nickel steel with extremely high nickel contents.
  • the hollow outer walls which can be seen as plate heat exchangers and cool the raw gas, must also consist of the above-mentioned highly corrosion-resistant and expensive special alloys due to the increasing risk of corrosion as the temperature of the raw gas increases. Falling below the dew point temperature of the raw gas can also result in sulfuric acid corrosion on the wall facing outward on the raw gas side. Thus, the corrosion problem is only shifted from the clean gas to the raw gas side.
  • the invention proposes starting from a glass tube heat exchanger of the type mentioned that heated fresh air circulates in the cavities of the outer walls; which is kept in motion by a fan.
  • the glass tube heat exchanger according to the invention only heated fresh air circulates in the cavities of the outer walls, so that corrosion from these cavities is excluded. By an ent Talking heating of this air, it is easily possible to keep the wall parts in contact with the cold and saturated clean gas sufficiently warm so that no corrosive precipitation can form there. Furthermore, the glass tube heat exchanger according to the invention has the advantage that the wall parts delimiting the cavities of the outer wall to the outside can be made of normal steel sheet, since these wall parts do not come into contact with any corrosive gas.
  • the air circulating in the cavities of the outer walls is expediently heated by means of heating elements which are arranged in the cavities of the walls. This makes it possible to optimally distribute the heat in the cavities and according to the needs.
  • a particularly preferred embodiment of the invention provides that the cavities of the outer walls are each formed by an intermediate wall running parallel to the wall plane, the heating elements are arranged in the outer part of the cavity and the two parts of the cavity are connected so that the circulating air first flows through the outer cavity and then through the inner cavity. This ensures that the circulating air flow is initially strongly heated in its entirety and is then brought into intensive contact with the wall parts to be heated.
  • the heated air flow in the interior cavity expediently runs in the same direction as the clean gas flow flowing through the housing.
  • the wall parts coming into contact with the incoming, not yet heated clean gas are heated particularly strongly because the air flowing through the interior cavity is of course still the warmest in the inflow region. This reliably prevents the temperature from falling below the dew point, especially in this critical area.
  • auxiliary heating element can optionally also be assigned to the interior cavity.
  • This auxiliary heating element is switched on if e.g. when starting up the plant the raw gas flow is not yet sufficiently hot or during periods of operation occur periods in which the raw gas temperature drops, or if the raw gas temperature is too low due to upstream parts of the plant and due to pure heat recovery from the raw gas a wall temperature above the dew point temperature of the clean gas cannot be reached.
  • a channel can also be formed in the connecting flange of the clean gas channel, through which a partial flow of the heated fresh air is passed. This feature is particularly useful when the temperature problems listed above occur.
  • the heated fresh air guided through this duct can then be supplied to the raw gas or the clean gas or discharged into the atmosphere, as required.
  • the glass tube heat exchanger shown in the drawing has a cuboid housing 1, into which two tube plates 2 and 3 are drawn, in which glass tubes 4 are mounted.
  • a raw gas distribution space 5 into which the raw gas channel (not shown) opens.
  • Behind the second tube sheet 3 there is a raw gas collecting space 6, to which the raw gas discharge duct (not shown) connects.
  • the clean gas supply channel, not shown, and the clean gas discharge channel, also not shown, are connected to opposite sides of the cuboid housing 1.
  • the remaining free outer walls of the housing 1 are double-walled and have an outer wall 7a and an inner wall 7b.
  • the cavity 8 enclosed by the outer wall 7a and the inner wall 7b is divided by an intermediate wall 7c into an outer cavity 8a and an inner cavity 8b.
  • the pressure port and the suction port of a fan 9 are connected such that the air conveyed by the fan first flows through the outer cavity 8a and then the inner cavity 8b in a circuit.
  • a number of heating elements are installed, which are designed as glass tubes lo through which the hot raw gas flows.
  • the glass tubes lo run parallel to the glass tubes 4 of the glass tube heat exchanger and, like these, are inserted in its tube sheets 2 and 3, so they are supplied with hot raw gas from the raw gas distribution space 5 and open into the raw gas collecting space 6.
  • the fresh air heated by the glass tubes lo flows through the inner cavity 8b in the same direction as the clean gas flows through the housing 1, so that the inner wall 7b is most strongly heated where the still cool and saturated clean gas comes into contact with it .
  • additional auxiliary heating elements e.g. be arranged in the form of flame tubes 11, which provide additional heating if necessary.
  • the raw gas collecting space 6 extends behind the tube sheet 3 to directly to the connecting flange 12 of the clean gas channel, so that sufficient heating is ensured even in this critical area.
  • the raw gas distribution space 5 could possibly be formed on the opposite side.
  • a channel 15 running along the connecting flange 14 is formed on the inflow side of the clean gas by a welded-on sheet metal 13, through which a partial flow of the heated fresh air is guided.
  • the slight fresh air loss that occurs with this type of flange heating is supplemented on the suction side of the fan 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
EP84110858A 1983-09-14 1984-09-12 Echangeur de chaleur à tubes en verre Expired - Lifetime EP0135188B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84110858T ATE26885T1 (de) 1983-09-14 1984-09-12 Glasrohr-waermetauscher.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3333057 1983-09-14
DE3333057A DE3333057C1 (de) 1983-09-14 1983-09-14 Glasrohr-Waermetauscher

Publications (4)

Publication Number Publication Date
EP0135188A2 true EP0135188A2 (fr) 1985-03-27
EP0135188A3 EP0135188A3 (en) 1985-11-27
EP0135188B1 EP0135188B1 (fr) 1987-04-29
EP0135188B2 EP0135188B2 (fr) 1991-03-06

Family

ID=6208976

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84110858A Expired - Lifetime EP0135188B2 (fr) 1983-09-14 1984-09-12 Echangeur de chaleur à tubes en verre

Country Status (3)

Country Link
EP (1) EP0135188B2 (fr)
AT (1) ATE26885T1 (fr)
DE (1) DE3333057C1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3909929C1 (en) * 1989-03-25 1990-05-31 Langbein & Engelbracht Gmbh & Co Kg, 4630 Bochum, De Glass tube heat exchanger

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3534822A1 (de) * 1985-09-30 1987-04-16 Langbein & Engelbrecht Glasrohrwaermetauscher
DE3905140A1 (de) * 1989-02-20 1990-08-23 Dieter Dipl Ing Wallstein Waermetauscher
EP2085732B1 (fr) 2008-02-04 2014-04-09 ATEC GmbH & Co. KG Echangeur thermique en verre avec plaque tubulaire en plastique

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3142485A1 (de) 1981-10-27 1983-05-11 Langbein & Engelbracht GmbH & Co KG, 4630 Bochum Glasrohrwaermetauscher

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1145912A (fr) * 1956-03-21 1957-10-30 Chausson Usines Sa Procédé de fabrication d'échangeurs de chaleur et dispositif échangeur mettant en oeuvre ce procédé
JPS5237662U (fr) * 1975-09-10 1977-03-17
CH628134A5 (de) * 1978-03-28 1982-02-15 Ygnis Sa Rauchgasdurchstroemter waermetauscher.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3142485A1 (de) 1981-10-27 1983-05-11 Langbein & Engelbracht GmbH & Co KG, 4630 Bochum Glasrohrwaermetauscher

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3909929C1 (en) * 1989-03-25 1990-05-31 Langbein & Engelbracht Gmbh & Co Kg, 4630 Bochum, De Glass tube heat exchanger

Also Published As

Publication number Publication date
EP0135188B2 (fr) 1991-03-06
EP0135188B1 (fr) 1987-04-29
EP0135188A3 (en) 1985-11-27
ATE26885T1 (de) 1987-05-15
DE3333057C1 (de) 1985-04-18

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