FR2247135A5 - Recuperation of heat in furnace gas - with recuperator on radiant tubes having increased heat exchange surface - Google Patents

Recuperation of heat in furnace gas - with recuperator on radiant tubes having increased heat exchange surface

Info

Publication number
FR2247135A5
FR2247135A5 FR7335319A FR7335319A FR2247135A5 FR 2247135 A5 FR2247135 A5 FR 2247135A5 FR 7335319 A FR7335319 A FR 7335319A FR 7335319 A FR7335319 A FR 7335319A FR 2247135 A5 FR2247135 A5 FR 2247135A5
Authority
FR
France
Prior art keywords
recuperator
radiant tubes
recuperation
furnace gas
exchange surface
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
FR7335319A
Other languages
French (fr)
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.)
Heurtey Metallurgie SA
Original Assignee
Heurtey Metallurgie SA
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 Heurtey Metallurgie SA filed Critical Heurtey Metallurgie SA
Priority to FR7335319A priority Critical patent/FR2247135A5/en
Priority to LU70394A priority patent/LU70394A1/xx
Priority to BE6044656A priority patent/BE816932A/en
Priority to ES428019A priority patent/ES428019A1/en
Application granted granted Critical
Publication of FR2247135A5 publication Critical patent/FR2247135A5/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C3/00—Combustion apparatus characterised by the shape of the combustion chamber
    • F23C3/002—Combustion apparatus characterised by the shape of the combustion chamber the chamber having an elongated tubular form, e.g. for a radiant tube
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/12—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically the surrounding tube being closed at one end, e.g. return type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/42—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element
    • F28F1/422—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being both outside and inside the tubular element with outside means integral with the tubular element and inside means integral with the tubular element

Abstract

Recuperator associated with radiant tubes entering and leaving through coalls of a furnace has a central smoke passage as an extension of the exit branch, surrounded by an air circulating jacket supplied by a burner in a corresponding entry branch. The wall of the passage is provided with elements increasing the exchange surfaces on the smoke circulation such as well as on the air circulation side. The system has the advantages of releasing less smoke and of improving the heat recovery of preheated input air.
FR7335319A 1973-10-03 1973-10-03 Recuperation of heat in furnace gas - with recuperator on radiant tubes having increased heat exchange surface Expired FR2247135A5 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7335319A FR2247135A5 (en) 1973-10-03 1973-10-03 Recuperation of heat in furnace gas - with recuperator on radiant tubes having increased heat exchange surface
LU70394A LU70394A1 (en) 1973-10-03 1974-06-25
BE6044656A BE816932A (en) 1973-10-03 1974-06-26 IMPROVEMENT PROVIDED TO RECOVERERS ON RADIANT TUBES
ES428019A ES428019A1 (en) 1973-10-03 1974-07-05 Improvements in recovery in the exit branches of radiant tubes. (Machine-translation by Google Translate, not legally binding)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7335319A FR2247135A5 (en) 1973-10-03 1973-10-03 Recuperation of heat in furnace gas - with recuperator on radiant tubes having increased heat exchange surface

Publications (1)

Publication Number Publication Date
FR2247135A5 true FR2247135A5 (en) 1975-05-02

Family

ID=9125862

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7335319A Expired FR2247135A5 (en) 1973-10-03 1973-10-03 Recuperation of heat in furnace gas - with recuperator on radiant tubes having increased heat exchange surface

Country Status (4)

Country Link
BE (1) BE816932A (en)
ES (1) ES428019A1 (en)
FR (1) FR2247135A5 (en)
LU (1) LU70394A1 (en)

Also Published As

Publication number Publication date
LU70394A1 (en) 1974-10-17
BE816932A (en) 1974-10-16
ES428019A1 (en) 1976-09-16

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Legal Events

Date Code Title Description
ST Notification of lapse