EP0623797A1 - Procédé et dispositif pour le chauffage par flamme d'une chambre en dépression - Google Patents

Procédé et dispositif pour le chauffage par flamme d'une chambre en dépression Download PDF

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Publication number
EP0623797A1
EP0623797A1 EP94400948A EP94400948A EP0623797A1 EP 0623797 A1 EP0623797 A1 EP 0623797A1 EP 94400948 A EP94400948 A EP 94400948A EP 94400948 A EP94400948 A EP 94400948A EP 0623797 A1 EP0623797 A1 EP 0623797A1
Authority
EP
European Patent Office
Prior art keywords
heating chamber
mass
grid
heating
wall zone
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.)
Withdrawn
Application number
EP94400948A
Other languages
German (de)
English (en)
French (fr)
Inventor
Pierre Chaussonnet
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.)
Francaise de Thermolyse Ste
Original Assignee
Francaise de Thermolyse Ste
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 Francaise de Thermolyse Ste filed Critical Francaise de Thermolyse Ste
Publication of EP0623797A1 publication Critical patent/EP0623797A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B17/00—Furnaces of a kind not covered by any preceding group
    • F27B17/0016—Chamber type furnaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/12—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating using gaseous or liquid fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0033—Heating elements or systems using burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0001—Heating elements or systems
    • F27D99/0033—Heating elements or systems using burners
    • F27D99/0035—Heating indirectly through a radiant surface

Definitions

  • the present invention relates to the heating by flames of a closed enclosure maintained under vacuum by a suction system with a view to uniformly heating a solid or liquid mass to an average temperature - typically of the order of 600 ° C., without contact of this mass with the combustion flames, by maximizing the heat transfer from the flames to the mass, by convection, conduction and radiation, any thermal decomposition of the mass being favored by the evacuation of the gases produced by the system d aspiration.
  • the invention applies in particular, but not exclusively, to the heating of isolated chambers of a thermolysis treatment system, as in particular as described in document WO 92/16599.
  • the invention provides for this purpose a method for heating under vacuum of a mass according to which this mass is placed in a closed heating chamber, and a first zone of the wall of this heating chamber is connected to a suction source. , characterized in that, at a distance from this first wall zone, a second wall zone is formed by a perforated grid or plate having orifices of size less than approximately 3 mm, and in that flames are generated by licking this grate or perforated plate opposite this heating chamber.
  • the invention also provides a device for heating a mass under vacuum, comprising a closed heating chamber containing the mass, a suction source connected to a first wall zone of this heating chamber, and a heat source.
  • this heat source comprises a grid or perforated plate constituting a second wall zone and having orifices of size less than 3 mm, and at least one burner disposed behind this grid or perforated plate opposite the heating chamber.
  • the invention involves a grid which has a triple function since, at the same time, it stops the flames (preventing these flames from passing through it), it homogenizes the heat transfer (it takes energy from the flames and smoke, it homogenizes its temperature by conduction and emits energy as a whole by radiation) while allowing the depression of the chamber where the mass is located (thanks to the pressure drop it induces in the flow fumes).
  • FIG. 1 is the diagram of a preferred embodiment of an installation heater according to the invention.
  • the chambers 2 and 3 are separated by a grid or perforated plate 13 advantageously horizontal; the combustion chamber is preferably above the heating chamber.
  • the enclosure 1 and door 11 assembly is insulated to limit heat loss.
  • the combustion chamber 2 is provided in its upper part with gas burners 12 supplied with gas (for example propane or natural gas) by a pipe 8 and by combustion (air or oxygen) by a pipe 9. Flames 14 develop in chamber 2 which can, depending on the chosen configuration, come and lick the grid 13.
  • This grid or perforated plate has small holes (diameter of the holes typically less than 2 mm) so that the flames 14 cannot cross the grid to reach the chamber 3, but while allowing the passage in the chamber 3 of the combustion gases.
  • the heating chamber 3 is provided in its lower part with a cradle 4 comprising a support plane preferably consisting of a perforated grid (diameter of the holes of about 4 mm) and provided with feet, intended to support a mass 10 to heat and preferably allowing the passage of gases.
  • This chamber 3 is provided in its lower part with suction pipes 5 uniformly distributed over the floor 3A of the chamber, through which a suction system 6 (a vacuum pump for example) sucks the combustion gases and any gases produced by any mass transformation to evacuate them through a pipe 7.
  • This suction device causes a vacuum (300 mbar for example) of the heating chamber 3 and to a lesser extent of the combustion chamber 2 ( typically 450 mbar).
  • the enclosure 1 is for example the thermolysis chamber, or even the dehydration chamber of an installation thermolysis according to document WO-92/16599, in which case the enclosure preferably has two doors, and the cradle is a movable carriage whose bottom and / or walls are advantageously porous.
  • the orifices can be distributed uniformly along a hexagonal mesh.
  • the ratio of the overall surface of the holes to the total surface of the grid or perforated plate is substantially 50%, typically even less than 10-20%.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Baking, Grill, Roasting (AREA)
  • Furnace Details (AREA)
  • Drying Of Solid Materials (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
EP94400948A 1993-05-03 1994-05-02 Procédé et dispositif pour le chauffage par flamme d'une chambre en dépression Withdrawn EP0623797A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9305243A FR2704941B1 (fr) 1993-05-03 1993-05-03 Procede et dispositif pour le chauffage par flamme d'une chambre en depression.
FR9305243 1993-05-03

Publications (1)

Publication Number Publication Date
EP0623797A1 true EP0623797A1 (fr) 1994-11-09

Family

ID=9446686

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94400948A Withdrawn EP0623797A1 (fr) 1993-05-03 1994-05-02 Procédé et dispositif pour le chauffage par flamme d'une chambre en dépression

Country Status (8)

Country Link
EP (1) EP0623797A1 (es)
JP (1) JPH08509542A (es)
CA (1) CA2161894A1 (es)
DE (1) DE623797T1 (es)
ES (1) ES2071596T1 (es)
FR (1) FR2704941B1 (es)
GR (1) GR950300003T1 (es)
WO (1) WO1994025814A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0823594A3 (en) * 1996-08-05 1998-12-02 Fusoh Co., Ltd. Waste treatment furnace

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2086623A5 (es) * 1970-04-03 1971-12-31 Produits Refractaires
US4850862A (en) * 1988-05-03 1989-07-25 Consolidated Natural Gas Service Company, Inc. Porous body combustor/regenerator
US4924785A (en) * 1988-12-05 1990-05-15 Surface Combustion, Inc. Thermal cleaning system
WO1992016599A1 (fr) * 1991-03-20 1992-10-01 Societe Française De Thermolyse Systeme pour le traitement par thermolyse de produits solides dont le rejet est prejudiciable pour l'environnement
US5191846A (en) * 1992-02-03 1993-03-09 Clay Haile S Self-contained household garbage incinerator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2086623A5 (es) * 1970-04-03 1971-12-31 Produits Refractaires
US4850862A (en) * 1988-05-03 1989-07-25 Consolidated Natural Gas Service Company, Inc. Porous body combustor/regenerator
US4924785A (en) * 1988-12-05 1990-05-15 Surface Combustion, Inc. Thermal cleaning system
WO1992016599A1 (fr) * 1991-03-20 1992-10-01 Societe Française De Thermolyse Systeme pour le traitement par thermolyse de produits solides dont le rejet est prejudiciable pour l'environnement
US5191846A (en) * 1992-02-03 1993-03-09 Clay Haile S Self-contained household garbage incinerator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0823594A3 (en) * 1996-08-05 1998-12-02 Fusoh Co., Ltd. Waste treatment furnace
US5924368A (en) * 1996-08-05 1999-07-20 Fusoh Co., Ltd. Waste treatment furnace

Also Published As

Publication number Publication date
JPH08509542A (ja) 1996-10-08
CA2161894A1 (fr) 1994-11-10
GR950300003T1 (en) 1995-02-28
FR2704941A1 (fr) 1994-11-10
ES2071596T1 (es) 1995-07-01
FR2704941B1 (fr) 1995-08-11
WO1994025814A1 (fr) 1994-11-10
DE623797T1 (de) 1995-08-03

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