EP0854323A1 - Verbrennungskammer für mit brennbaren Feststoffteilchen beladener Luft - Google Patents

Verbrennungskammer für mit brennbaren Feststoffteilchen beladener Luft Download PDF

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Publication number
EP0854323A1
EP0854323A1 EP98430002A EP98430002A EP0854323A1 EP 0854323 A1 EP0854323 A1 EP 0854323A1 EP 98430002 A EP98430002 A EP 98430002A EP 98430002 A EP98430002 A EP 98430002A EP 0854323 A1 EP0854323 A1 EP 0854323A1
Authority
EP
European Patent Office
Prior art keywords
combustion chamber
air
chamber according
orifice
smoke
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Withdrawn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
EP98430002A
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English (en)
French (fr)
Inventor
Jean Claude Pillard
Jean Claude Gauthier
Frédéric Bury
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.)
Entreprise Generale de Chauffage Industriel Pillard SA
Original Assignee
Entreprise Generale de Chauffage Industriel Pillard 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 Entreprise Generale de Chauffage Industriel Pillard SA filed Critical Entreprise Generale de Chauffage Industriel Pillard SA
Publication of EP0854323A1 publication Critical patent/EP0854323A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
    • F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator

Definitions

  • the present invention relates to combustion chambers air charged with combustible particles.
  • the technical sector of the invention is the field of construction of combustion apparatus.
  • the main application of the invention is the realization of burners for incinerating combustible particles which can be present in the air and which are made up of compounds volatile or non-volatile organic: for this, it is known and even imposed by certain national laws, which now require that no longer able to release such organic compounds (which are generally polluting and which can in certain industrial fields represent more than 1% of the air rejected by the said industries), to bring the temperature of this air to high temperature, that is to say at least 800 ° C for 0.5 to 2 seconds depending on the type of organic compounds considered; such a temperature during this determined time indeed allows for thermal oxidation total of organic elements before the air is released into the atmosphere.
  • the problem posed is thus to be able to produce combustion of air charged with combustible particles, in which the outside heat energy supply is reduced to a minimum, making the best use of the combustion energy of compound particles incinerated, but without risk of destruction of ducts by self-ignition of charged feed air; which combustion chambers to occupy a volume and a minimum footprint, on the one hand to place said chambers closest to the places of production of said particles combustibles, thus limiting the lengths of conduits and sheaths air lines and on the other hand to adapt the size of each combustion chamber to the amount of locally produced particles.
  • a solution to the problem posed is a combustion chamber air charged with combustible particles comprising an enclosure surrounding the hearth, at least one supply inlet for said air and at at least one combustion smoke discharge orifice such as said air supply inlet is oriented against the current of the direction of smoke outlet through the orifice and opens, following a angle of inclination strictly less than 90 ° (in fact preferably less than 60 ° relative to the axis of the combustion chamber), against the wall of the enclosure surrounding the hearth upstream of said orifice, such way that the charged air thus injected against the wall of the enclosure of the combustion chamber, heats up on the one hand, in contact with this refractory wall heated by the flame and on the other hand, by the direct radiation thereof, constituting a contact exchanger direct.
  • Said combustion chamber also comprises at least one air supply duct towards said arrival in the enclosure of combustion, which duct has at least one common wall with that of smoke evacuation and constitutes with it an exchanger thermal.
  • Said combustion chamber also includes an injector auxiliary fuel auxiliary opening into said enclosure along the axis of the combustion chamber.
  • said surrounding enclosure the hearth is of cylindrical or frustoconical shape of revolution with section circular straight line and whose axis of revolution, which is also that of the combustion chamber is arranged vertically.
  • combustion chambers of particles which respond to the problem posed without having the disadvantages of known devices such as those mentioned above.
  • combustion chambers can be very compact sized to the amount of air and particles that we want to process and extrapolable in all dimensions while allowing recovery maximum energy, without risk of self-ignition and with simple implementation and therefore a reasonable cost.
  • Various options for improve said recovery of heat energy from smoke combustion can complete the following combustion chamber the invention, as described in the embodiments shown in the attached figures.
  • the layout and compactness of the combustion chambers allow them to be positioned vertically while occupying a reduced surface at ground level, and as close as possible to the desired locations: more this vertical position directing the evacuation of smoke naturally upwards improves the draft of the chamber combustion and allows direct connection to the roof of the room considered.
  • Figure 1 is a longitudinal sectional view along I I 'by example of figure 2 A, of an example of combustion chamber according to the invention.
  • Figure 2 is a partial longitudinal sectional view of another example of a combustion chamber, according to FIG. 2A.
  • Figure 2A is a sectional view along AA 'of the conduit flue gas exhaust from Figure 2.
  • Figure 3 is a longitudinal sectional view, as for the FIG. 1, of an example of a combustion chamber having certain options allowing in particular better recovery of thermal energy.
  • FIG. 4 is a partial view of a longitudinal section, according to IV IV 'of FIG. 4 B, of another example of conduit smoke evacuation.
  • Figure 4 B is a sectional view along B B 'of the conduit Figure 4.
  • FIG. 5 is another sectional view, like that of FIG. 4, along V V 'in Figure 5 C.
  • FIG. 5C is a sectional view along C C 'of FIG. 5.
  • Figure 6 is a longitudinal sectional view, like those of Figures 1 and 3, of another example of embodiment of a combustion according to the invention.
  • the air combustion chamber charged with combustible particles includes an enclosure 7 of revolution according to an axis X X 'which is also that of the combustion chamber, and preferably cylindrical or frustoconical with a circular cross section, of which the walls surround the hearth 1, at least one supply inlet 15 of said charged air whose combustible particles are to be incinerated in said hearth 1, and at least one orifice 16 for evacuating smoke from combustion outside said hearth 1.
  • the walls of the enclosure 7 are in refractory materials to withstand temperatures of the order of at least minus 800 ° C necessary to burn said combustible particles; the other supply or exhaust ducts are made in materials resistant to heat, but at temperatures below that of the home, which is one of the objectives that allows achieve the present invention by eliminating the risk of self-ignition fuel particles in the conduits feed.
  • said arrival 15 air supply is oriented in the enclosure 7 of the hearth 1 against current of the smoke outlet direction through the discharge orifice 16 and opens, at an angle ⁇ of so-called radial inclination (because giving a speed component directed towards the axis XX 'and perpendicular to this) between 0 and 90 °, in fact rather from 0 to 60 ° relative to and towards the XX 'axis, to always be directed towards the bottom of the enclosure 7 opposite the discharge orifice 16 and against the wall of the enclosure 7 upstream thereof.
  • the charged air which is then injected at a speed for example of the order of 40 meters per second, begins along the wall of the enclosure 7 either along the axis of the generators of this if the injection angles ⁇ and ⁇ (defined below) are zero in the case of a cylindrical enclosure shape, the air thus injected losing then its speed, it is entrained by the air exiting in the opposite direction of the combustion chamber and by turning back it feeds the flame formed inside the hearth 1 in which the particles of fuel are thus incinerated.
  • An auxiliary fuel injector 9 gaseous or atomized liquid placed in the bottom of the combustion chamber to the opposite of the discharge orifice 16 and along its axis XX ', realizes the fuel supply possibly necessary to maintain said flame, stabilize it and maintain the equilibrium temperature desired at output 16 of said focus 1.
  • the shape of the flame thus produced can be modified by varying the angle ⁇ of radial inclination of the air supply inlet 15 in the hearth 1 thanks to deflectors 8 which can also give a so-called tangential or peripheral inclination ⁇ (because giving a velocity component perpendicular to the XX 'axis and tangent to the straight section curve of the enclosure 7) of said air inlet which is then injected by forming a helical air flow: if the value of the angle ⁇ is close to 0, the air supply then being tangential at the wall, the flame will be more concentrated inside the hearth 1 then that if the angle ⁇ is more open, said flame tends to leave the focus 1.
  • the device also has the advantage of being able to adapt the operating conditions of the combustion chamber at flammability characteristics of the charged air thanks to the adjustment if necessary of said angle ⁇ as a function of the concentration of compounds organic in the air.
  • the combustion chamber 7 includes at least one duct 3 air supply, comprising upstream of said inlet 15, at minus a common wall 17 with that 5 of smoke evacuation and constituting with it a heat exchanger both by radiation only by convection.
  • said air inlet consists of an annular ring 15 1 surrounding said orifice 16 for evacuating smoke and said supply duct 3 1 then constitutes an annular wall peripheral to the duct d evacuation 5.
  • said air inlet 15 consists of several orifices 15 2 arranged around said orifice 16 for discharging the fumes and each of said orifices 15 2 , also comprising a deflector 8, and that of a tube 3 2 . Placed, one against the other or not, in the smoke exhaust duct 5 to an external chimney 6.
  • an exchanger additional in the low temperature zone combustion is that furthest from the hearth 1 in the duct 5 exhaust, by exhausting the heat contained and thus reducing the most possible the temperature of the fumes which will then be discharged into the chimney 6.
  • Figures 4 and 4B show an exemplary embodiment in which the air is supplied by tubes 3 2 located inside the exhaust pipe 5 of the fumes and arranged against their direction; said tubes 3 2 have longitudinal fins 11 corresponding to studs forming protrusion only outside of said tubes, while according to the embodiment of Figure 3 which has a single annular supply conduit 3 1 , said studs 11 pass through the single common wall 17 and constitutes protuberances in the two conduits 3 and 5.
  • the air supply is carried out with the same type of tubes 3 2 as in Figures 4, but the deflector 10, instead of being limited to occupying the near section of the axis XX 'as in Figures 4 occupies the entire section of the smoke exhaust duct 5 leaving only orifices surrounding each finned tube 3 1 , forcing the fumes to circulate around them.
  • said deflector 10 is hollow, constitutes a part of duct 3 for supplying air before that it is introduced into the supply duct (s) 3 arranged on the periphery of the smoke evacuation duct 5 and can itself include studs 11 passing through its wall.
  • the combustion chamber according to the invention may include a device for regulating the flow make-up fuel depending on the smoke temperature measured downstream of the orifice 16 for evacuating this smoke: such a device comprises at least one means 12 for measuring the temperature fumes, a member 14 for adjusting the feed rate of the auxiliary fuel injector 9, and a calculation unit 13 controlling said adjusting member 14 as a function of the measurement of temperature 12.
  • the combustion chamber according to the invention is represented with its vertical axis X X 'and mounted on feet supports 18 placed on the ground thus occupying a small footprint by compared to this: a direct connection to the roof of the room can be performed, improving the natural draft.
  • All of the combustion chambers shown in the different figures of course includes an external insulating wall 4 at least around the various ducts 3 for supplying the charged air and preheated, and the smoke evacuation duct 5 at the level of the heat exchange zone between these two fluids.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Of Fluid Fuel (AREA)
EP98430002A 1997-01-17 1998-01-09 Verbrennungskammer für mit brennbaren Feststoffteilchen beladener Luft Withdrawn EP0854323A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9700645 1997-01-17
FR9700645A FR2758611B1 (fr) 1997-01-17 1997-01-17 Chambre de combustion d'air charge de particules combustibles

Publications (1)

Publication Number Publication Date
EP0854323A1 true EP0854323A1 (de) 1998-07-22

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EP98430002A Withdrawn EP0854323A1 (de) 1997-01-17 1998-01-09 Verbrennungskammer für mit brennbaren Feststoffteilchen beladener Luft

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EP (1) EP0854323A1 (de)
FR (1) FR2758611B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2788588A1 (fr) 1999-01-14 2000-07-21 Pillard Chauffage Procede et dispositif d'incineration de gaz polluant
EP3032172A1 (de) * 2014-12-09 2016-06-15 Eisenmann SE Thermische nachverbrennungs-anlage
CN105757689A (zh) * 2016-05-09 2016-07-13 洛阳瑞昌石油化工设备有限公司 一种自预热焚烧炉

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1931647A1 (de) * 1969-02-15 1971-01-21 Duerr O Fa Verfahren und Vorrichtung zur Nachverbrennung von mit brennbaren Bestandteilen angereicherter Abluft (oder Abgas)
DE2115253A1 (de) * 1971-03-30 1972-10-19 Eisenmann Kg Maschinenbauges Vorrichtung zum Reinigen von Abgasen
US4038032A (en) * 1975-12-15 1977-07-26 Uop Inc. Method and means for controlling the incineration of waste
JPS52126079A (en) * 1976-04-15 1977-10-22 Mitsubishi Electric Corp Deodorizer
FR2549589A3 (fr) * 1983-07-21 1985-01-25 Siderurgie Fse Inst Rech Recuperateur de chaleur de fumees, a temperature elevee
EP0205841A1 (de) * 1985-05-04 1986-12-30 VEBA OEL Entwicklungs-Gesellschaft mbH Mobile thermische Nachverbrennungsanlage für ein verbrennbares Abgasgemisch
DE3717375A1 (de) * 1987-05-22 1988-12-15 Julija Pavlovna Veber Einrichtung fuer die reinigung von ventilationsausscheidungen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1931647A1 (de) * 1969-02-15 1971-01-21 Duerr O Fa Verfahren und Vorrichtung zur Nachverbrennung von mit brennbaren Bestandteilen angereicherter Abluft (oder Abgas)
DE2115253A1 (de) * 1971-03-30 1972-10-19 Eisenmann Kg Maschinenbauges Vorrichtung zum Reinigen von Abgasen
US4038032A (en) * 1975-12-15 1977-07-26 Uop Inc. Method and means for controlling the incineration of waste
JPS52126079A (en) * 1976-04-15 1977-10-22 Mitsubishi Electric Corp Deodorizer
FR2549589A3 (fr) * 1983-07-21 1985-01-25 Siderurgie Fse Inst Rech Recuperateur de chaleur de fumees, a temperature elevee
EP0205841A1 (de) * 1985-05-04 1986-12-30 VEBA OEL Entwicklungs-Gesellschaft mbH Mobile thermische Nachverbrennungsanlage für ein verbrennbares Abgasgemisch
DE3717375A1 (de) * 1987-05-22 1988-12-15 Julija Pavlovna Veber Einrichtung fuer die reinigung von ventilationsausscheidungen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2, no. 12 (M - 004) 27 January 1978 (1978-01-27) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2788588A1 (fr) 1999-01-14 2000-07-21 Pillard Chauffage Procede et dispositif d'incineration de gaz polluant
EP3032172A1 (de) * 2014-12-09 2016-06-15 Eisenmann SE Thermische nachverbrennungs-anlage
CN105757689A (zh) * 2016-05-09 2016-07-13 洛阳瑞昌石油化工设备有限公司 一种自预热焚烧炉
CN105757689B (zh) * 2016-05-09 2017-12-15 洛阳瑞昌石油化工设备有限公司 一种自预热焚烧炉

Also Published As

Publication number Publication date
FR2758611B1 (fr) 1999-04-09
FR2758611A1 (fr) 1998-07-24

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