EP3899368B1 - Verfahren zur abscheidung eines katalysators auf der oberfläche eines katalytischen verbrennungsbrenners - Google Patents

Verfahren zur abscheidung eines katalysators auf der oberfläche eines katalytischen verbrennungsbrenners Download PDF

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Publication number
EP3899368B1
EP3899368B1 EP19829572.7A EP19829572A EP3899368B1 EP 3899368 B1 EP3899368 B1 EP 3899368B1 EP 19829572 A EP19829572 A EP 19829572A EP 3899368 B1 EP3899368 B1 EP 3899368B1
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EP
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Prior art keywords
burner
catalyst
catalytic
catalytic combustion
composition
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EP19829572.7A
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English (en)
French (fr)
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EP3899368A1 (de
EP3899368C0 (de
Inventor
Corinne Gerard
Laurent Ozouf
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Produits Berger SAS
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Produits Berger SAS
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Publication of EP3899368C0 publication Critical patent/EP3899368C0/de
Publication of EP3899368B1 publication Critical patent/EP3899368B1/de
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D3/00—Burners using capillary action
    • F23D3/02—Wick burners
    • F23D3/18—Details of wick burners
    • F23D3/24—Carriers for wicks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2213/00—Burner manufacture specifications
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/03081—Catalytic wick burners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/31004—Wick burners using alcohol as a fuel

Definitions

  • the present invention generally relates to the field of catalytic combustion, and more specifically that of catalytic combustion burners made of porous material. These burners are in particular used for the diffusion of perfume and/or active substances, for the destruction of odorous or non-odorous molecules, and/or for air purification.
  • Such a burner has for example been described in the French patent application FR3061543 in the name of the plaintiff. It is in particular a burner intended to receive a wick soaking in a combustible liquid contained in a catalytic combustion bottle, which receives the burner at its neck.
  • a burner (in particular shown on the Fig 3A ) is made of a porous material, which comprises a tip having in its upper part a cavity opening to the outside and in its lower part, a cavity in which the end of the wick is engaged. The end piece is extended at its lower part by a sleeve. The exterior face of the upper part of the tip, and its upper face (annular shape) are doped with a catalyst.
  • the combustible liquid supplied by the wick penetrates the pores of the porous material of the burner. Part of this liquid passes through the central zone of the burner and undergoes vaporization there.
  • the applicant has developed a process for depositing the catalyst allowing better distribution of the latter on the surface of the burner tip and therefore avoiding an excessively high temperature in the zone. central.
  • Newtonian fluid is meant, within the meaning of the present invention, a fluid whose viscosity depends neither on its shear speed nor on the time during which the liquid is sheared.
  • compound capable of increasing the resistance to the flow of a fluid is meant for the purposes of the present invention, a compound capable of giving said fluid a dynamic viscosity ⁇ c of at least 5 mPa.s. at room temperature (i.e. around 20°C).
  • said compound capable of increasing the flow resistance may be a polymer derived from glucose or a polymer derived from ethylene oxide.
  • heat treatment step B) comprises maintaining the temperature T a for at least 3 hours.
  • the present invention also relates to a catalytic combustion burner capable of being coated with a catalyst in accordance with the process according to the invention.
  • the present invention also relates to a catalytic combustion bottle, adapted to contain a combustible liquid and to receive at its neck a catalytic combustion burner receiving a wick soaking in said liquid, said bottle (20) being equipped with a burner according to the invention.
  • FIG. 1 is shown schematically a cross section of an example of a catalytic combustion burner with catalyst, likely to have been treated by the process according to the invention by impregnation of a catalyst on its surface.
  • a burner 1 is made of a porous material, which comprises a tip 1 having at its upper part 10 a cavity (or bowl) 100 opening to the outside and at its lower part 11, a cavity in which the end is engaged of a wick 40 intended to bring to the burner a combustible composition 30 (in the examples below isopropyl alcohol) coming from the bottle 20, at the neck 5 to which the burner 1 is installed.
  • the tip 1 extends to its lower part by a sleeve 2 (also called barrel).
  • the combustible liquid 30 is usually an alcohol, for example isopropyl alcohol, or any other suitable liquid fuel compatible with the legislation in force in this area.
  • the combustible liquid 30 must be such that its vaporization and its catalytic combustion do not give off unpleasant odors.
  • the combustible liquid 30 may further comprise a perfumed material and/or an active material.
  • the wick 40 is any known wick, for example a cotton wick, or a wick made of mineral material, for example mineral fibers.
  • the combustible liquid 30 from the bottle 20 rises in the wick 40 by capillary action and penetrates into the pores of the porous material of the burner, which when it has been preheated, ensures its catalytic combustion.
  • the upper part 10 of the end piece 1 has a side peripheral wall comprising an interior face of essentially frustoconical shape delimiting a cavity in the shape of a bowl 100, an exterior face 101 of essentially cylindrical shape, and a crown-shaped upper face 102.
  • a catalyst (not visible on the Fig 1 and Fig 2 ) was deposited on the exterior face 101 and the crown 102 of the nozzle 1, either in accordance with the process according to the invention (designated in the examples which follow by "BI burner"), or in accordance with a process known to the skilled in the art (referred to in the following examples as “BC burner.”). In the latter case, the burner for which the doping has been carried out conventionally is used as a control in the catalytic operating tests with and without air conditioning.
  • the burner 10 i.e. that according to the invention as shown on the Figure 5 , either that of the prior art represented on the Figure 1 , is installed in the neck 50 of the bottle (for example using a metal base placed in the neck 50).
  • the wick 40 is received inside the burner 10, this catalytic combustion wick 40 receiving a wick (40) soaking in the liquid 30.
  • the bottle 20 can be a bottle of any shape having a neck 50 in which the burner 10.
  • Aqueous, alcoholic, or hydro-alcoholic solvent aqueous, alcoholic, or hydro-alcoholic solvent
  • the catalyst used (whether on parts 100, 101 or 102 of the burner) is a metal belonging to groups 9 or 10 of the periodic table of elements. It is present at a rate of 2% by weight of the weight of the catalytic composition according to the invention.
  • the catalyst used (whether on faces 100, 101 or 102 of the burner) is a metal belonging to groups 9 or 10 of the periodic table of elements. It is present at a rate of 2% by weight relative to the weight of the control catalytic composition.
  • BC burner (shown on the Figure 1 ) consisting of a porous material obtained from composition C, and whose faces 100, 101 and 102 of the burner are doped with the control catalytic composition impregnating them.
  • the application of the catalytic composition to the faces 100, 101 and 102 of the burner tip is done by impregnation then cooking up to a temperature of at least 450°C, then maintaining at this temperature for at least 3 hours .
  • “BI” burner (shown on the Figure 1 ) consisting of a porous material obtained from composition C, and whose faces 100, 101 and 102 of the burner are doped with the catalytic composition according to the invention impregnating them.
  • the application of the catalytic composition to the faces 100, 101 and 102 of the burner tip is done by impregnation then cooking up to a temperature of at least 450°C, then maintaining at this temperature for at least 3 hours .
  • the test protocol is shown on the Figure 5 . It generally consists of measure by infrared thermography (IR) using an IR thermal camera the temperature on each of the burners tested (BI and BC) in operation on the bottle 20, placed at a reasonable distance from an air conditioner (whose power is 800 W within the framework of the tests carried out), at the low level of Fig 4A and Fig 4B . These measurements are also compared, for each burner tested (control 1C and according to the invention 1 and 2), to measurements carried out without ventilation.
  • IR infrared thermography
  • thermographs of Fig 3A and Fig 3B in the case of an absence of air conditioning, shows that the temperature of the central diffusion zone of the burner decreases from 389°C (treatment with the control catalytic composition) to 364°C when treating the faces 100, 101 and 102 of the catalyst tip according to the process according to the invention.
  • thermographs of Fig 3A and Fig 3B shows a similar effect in the presence of air conditioning: the temperature of the central diffusion zone of the burner decreases from 357°C (for treatment with the control catalytic composition) to 318°C when treating faces 100, 101 and 102 of the catalyst tip according to the process according to the invention.
  • the catalyst penetrates less deeply inside the burner, so that the temperature of the central diffusion zone of the burner is lower than if the control catalytic composition had been applied.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Catalysts (AREA)
  • Gas Burners (AREA)
  • Spray-Type Burners (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Claims (6)

  1. Verfahren zum Aufbringen eines Katalysators auf die Oberfläche eines Brenners zur katalytischen Verbrennung, wobei der Brenner zur katalytischen Verbrennung aus einem porösen Material besteht und umfasst:
    ein Anschlussstück (1) mit einem oberen Teil (10) und einem unteren Teil (11), wobei der obere Teil (10) eine seitliche Umfangswand, die eine einen Hohlraum begrenzende Innenseite (100) aufweist, eine im Wesentlichen zylinderförmige Außenseite (101) und eine kranzförmige Oberseite (102) vorweist, und
    eine Hülse (2), die in der Verlängerung des unteren Teils (11) des Anschlussstücks (1) angeordnet ist und einen Hohlraum aufweist, der geeignet ist, einen Docht einzuschließen, der dafür bestimmt ist, dem Brenner eine brennbare Zusammensetzung zuzuführen, das Verfahren umfassend:
    A) einen Schritt eines Benetzens der Außenseite (101) und entweder der Innenseite (100) oder des Kranzes (102) des Anschlussstücks (1) oder der Innenseite (100) und des Kranzes (102) mit einer katalytischen Zusammensetzung, die mindestens einen Katalysator enthält, der zu der Gruppe 9 oder 10 der Tabelle des Periodensystems gehört;
    B) einen Schritt eines Wärmebehandelns des so mit dem Katalysator benetzten Brenners bis zu einer Temperatur Ta von mindestens 450 °C;
    wobei das Verfahren dadurch gekennzeichnet ist, dass die katalytische Zusammensetzung ein nicht-Newtonsches Fluid ist, das vor dem Auftragen auf das Anschlussstück (1) eine dynamische Viskosität µc von mindestens 15 mPa.s. bei 20 °C vorweist.
  2. Verfahren nach Anspruch 1, wobei die katalytische Zusammensetzung umfasst:
    zu zwischen 1 Gew.-% und 5 Gew.-%, bezogen auf das Gesamtgewicht der katalytischen Zusammensetzung, einen Katalysator, der aus den Metallen ausgewählt ist, die zu der Gruppe 9 oder 10 der Tabelle des Periodensystems gehören, und zu zwischen 0,2 Gew.-% und 2 Gew.-%, bezogen auf das Gesamtgewicht der katalytischen Zusammensetzung, eine Verbindung, die geeignet ist, den Fließwiderstand der katalytischen Zusammensetzung zu erhöhen.
  3. Verfahren nach Anspruch 2, wobei die Verbindung geeignet ist, den Fließwiderstand eines von Glukose abgeleiteten Polymers oder eines von Ethylenoxid abgeleiteten Polymers zu erhöhen.
  4. Verfahren nach einem der Ansprüche 1 bis 3, wobei der Schritt B) des Wärmebehandelns ein Halten bei der Temperatur Ta während mindestens 3 Stunden umfasst.
  5. Brenner zur katalytischen Verbrennung, der mit einem Katalysator beschichtet ist, der gemäß dem Verfahren nach einem der Ansprüche 1 bis 4 abgeschieden wurde,
    wobei der Brenner zur katalytischen Verbrennung aus einem porösen Material hergestellt ist und umfasst:
    ein Anschlussstück (1) mit einem oberen Teil (10) und einem unteren Teil (11), wobei der obere Teil (10) eine seitliche Umfangswand, die eine einen Hohlraum begrenzende Innenseite (100) aufweist, eine im Wesentlichen zylinderförmige Außenseite (101) und eine kranzförmige Oberseite (102) vorweist, und
    eine Hülse (2), die in der Verlängerung des unteren Teils (11) des Anschlussstücks (1) angeordnet ist und einen Hohlraum aufweist, der geeignet ist, einen Docht einzuschließen, der dafür bestimmt ist, dem Brenner eine brennbare Zusammensetzung zuzuführen.
  6. Kolben (20) zur katalytischen Verbrennung, der geeignet ist, eine brennbare Flüssigkeit (30) zu enthalten und um an seinem Hals (50) einen Brenner zur katalytischen Verbrennung aufzunehmen, der einen Docht (40) aufnimmt, der in die Flüssigkeit (30) eintaucht, dadurch gekennzeichnet, dass der Kolben (20) mit einem Brenner (10) nach Anspruch 5 ausgestattet ist.
EP19829572.7A 2018-12-21 2019-12-19 Verfahren zur abscheidung eines katalysators auf der oberfläche eines katalytischen verbrennungsbrenners Active EP3899368B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1873930A FR3090420B1 (fr) 2018-12-21 2018-12-21 Procede de depot d’un catalyseur a la surface d’un bruleur a combustion catalytique
PCT/EP2019/086486 WO2020127848A1 (fr) 2018-12-21 2019-12-19 Procede de depot d'un catalyseur a la surface d'un bruleur a combustion catalytique

Publications (3)

Publication Number Publication Date
EP3899368A1 EP3899368A1 (de) 2021-10-27
EP3899368C0 EP3899368C0 (de) 2024-02-07
EP3899368B1 true EP3899368B1 (de) 2024-02-07

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EP19829572.7A Active EP3899368B1 (de) 2018-12-21 2019-12-19 Verfahren zur abscheidung eines katalysators auf der oberfläche eines katalytischen verbrennungsbrenners

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Country Link
US (1) US20220042677A1 (de)
EP (1) EP3899368B1 (de)
JP (1) JP7483714B2 (de)
KR (1) KR102658559B1 (de)
CN (1) CN113195975B (de)
CA (1) CA3121598A1 (de)
ES (1) ES2971889T3 (de)
FR (1) FR3090420B1 (de)
TW (1) TWI731522B (de)
WO (1) WO2020127848A1 (de)

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ITMI981245A1 (it) * 1998-06-03 1999-12-03 Getters Spa Processo per la produzione di pannelli in fibre metalliche funzionalizzati con catalizzatori e pannelli cosi' prodotti
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Publication number Publication date
JP2022513281A (ja) 2022-02-07
KR102658559B1 (ko) 2024-04-19
ES2971889T3 (es) 2024-06-10
US20220042677A1 (en) 2022-02-10
CA3121598A1 (fr) 2020-06-25
EP3899368A1 (de) 2021-10-27
WO2020127848A1 (fr) 2020-06-25
KR20210102909A (ko) 2021-08-20
CN113195975B (zh) 2023-09-19
CN113195975A (zh) 2021-07-30
TW202030021A (zh) 2020-08-16
FR3090420B1 (fr) 2020-12-11
EP3899368C0 (de) 2024-02-07
JP7483714B2 (ja) 2024-05-15
FR3090420A1 (fr) 2020-06-26
TWI731522B (zh) 2021-06-21

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