US20040048211A1 - Catalytic combustion device with liquid fuel vaporisation on hot walls - Google Patents
Catalytic combustion device with liquid fuel vaporisation on hot walls Download PDFInfo
- Publication number
- US20040048211A1 US20040048211A1 US10/433,792 US43379203A US2004048211A1 US 20040048211 A1 US20040048211 A1 US 20040048211A1 US 43379203 A US43379203 A US 43379203A US 2004048211 A1 US2004048211 A1 US 2004048211A1
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- zone
- fuel
- combustion
- wall
- catalytic
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- 239000000446 fuel Substances 0.000 title claims abstract description 75
- 239000007788 liquid Substances 0.000 title claims abstract description 29
- 238000007084 catalytic combustion reaction Methods 0.000 title claims abstract description 16
- 238000009834 vaporization Methods 0.000 title claims abstract description 12
- 238000002485 combustion reaction Methods 0.000 claims abstract description 49
- 230000003197 catalytic effect Effects 0.000 claims abstract description 30
- 238000002347 injection Methods 0.000 claims abstract description 18
- 239000007924 injection Substances 0.000 claims abstract description 18
- 230000008016 vaporization Effects 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims description 15
- 238000005507 spraying Methods 0.000 claims description 12
- 230000000977 initiatory effect Effects 0.000 claims description 8
- 238000009835 boiling Methods 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 15
- 238000009826 distribution Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- 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
- F23C13/00—Apparatus in which combustion takes place in the presence of catalytic material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D9/00—Burners in which a stream of liquid fuel impinges intermittently on a hot surface
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/30—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply comprising fuel prevapourising devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/40—Continuous combustion chambers using liquid or gaseous fuel characterised by the use of catalytic means
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Spray-Type Burners (AREA)
Abstract
The present invention relates to a catalytic combustion device comprising a main combustion zone (20, 200) including at least one catalytic section (5, 103) and at least one air/fuel mixing zone (11, 117), said mixing zone comprising at least one pressurized air inlet (1, 101) and injection means (12, 105) for injecting a liquid fuel.
According to the invention, injection means (12, 105) project the liquid fuel onto a hot wall (13, 15, 107) of said device so as to allow vaporization of said fuel on contact with this wall.
Description
- The present invention relates to a catalytic combustion device with vaporization of liquid fuel on a hot wall, thus allowing to optimize the preparation of the air/fuel mixture in a combustion zone.
- Conventional combustion, carried out in the presence of a flame and commonly used in combustion methods, is a process that is difficult to control.
- It occurs in a well-determined air/fuel concentration range and leads, besides the formation of carbon dioxide and water, to the production of pollutants such as carbon monoxide and nitrogen oxides.
- Because of the increasingly severe environmental regulations relative to the pollutants emitted by combustion processes (nitrogen oxides, unburnt fuels, carbon monoxide), it has become necessary to find new technologies allowing such emissions to be greatly decreased.
- Several conventional solutions are known to the man skilled in the art:
- Selective catalytic reduction of nitrogen oxides by ammonia allows to reduce the NOx concentrations in fumes to about 10 ppm. This solution however requires a particular reactor downstream from the combustion chamber, storage and use of ammonia, and the installation and running costs of such a solution are high.
- Injection of water or steam, which lowers the temperature reached by the combustion gas, thus significantly reducing the NOx contents to about 50 ppm. The cost of such a device is low, but the running costs are high because of the intensive purification of the water prior to injection and of the overconsumption of fuel due to an energy efficiency decrease. Furthermore, although water injection is sufficient to meet the current standards, it will not meet the future NOx standards.
- Lean-burn combustion. As it is the case with the present invention, this technology is based on the lowering of the combustion temperatures. It allows the NOx concentrations to be lowered down to about 20 ppm, but this decrease often occurs to the detriment of the carbon monoxide and unburnt fuel emissions, which are then increased.
- Catalytic combustion is an attractive solution for meeting the increasingly severe standards relative to pollution. In fact, the catalytic combustion chamber advantageously replaces conventional burners because it allows better control of the total oxidation of the fuel in a very wide range of the air/fuel ratio values, thus allowing to work under optimum conditions which greatly reduce nitrogen oxides, unburnt fuel and carbon monoxide emissions. It is well-known that the main characteristic of this particular type of combustion is to provide complete oxidation of the fuels at a relatively low temperature (below 1000° C.) in relation to a conventional combustion.
- It may also be mentioned that catalytic combustion allows a great variety of compounds to be burnt. The applications of catalytic combustion are thus multiple: radiant panels and tubes, catalytic stoves, gas turbines, cogeneration, burners for boilers, catalytic sleeves for tubular reaction systems, hot gas production in the field of direct contact heating and catalytic plate reactors, etc. The possible fields of application of catalytic combustion are described in the literature, for example in: <<Catalytic Combustion: Current Status and Implications for Energy Efficiency in the Process Industries, Heat Recovery System & CHP, 13, No.5, pp. 383-390, 1993 >>.
- Combustion catalysts are generally prepared from a monolithic ceramic or metallic substrate on which a thin support layer consisting of one or more heat-resisting oxides, whose surface and porosity are greater than that of the monolithic substrate, is deposited. The active phase comprising most often essentially metals of the platinum group is dispersed on this support layer.
- Concerning the catalytic combustion processes in the field of energy production and cogeneration, the commonest reactor configuration is a reactor comprising several catalytic zones: the inlet catalyst(s) being more specifically dedicated to the initiation of the combustion reaction, the others being used to stabilize the combustion reaction at high temperature; the number of catalytic stages (or zones) is adjusted according to the conditions imposed by the application considered. It is also possible to replace the first catalytic reaction initiation zone by a pilot burner allowing the reaction to be initiated.
- In the conventional version of the catalytic combustion chamber, i.e. with a mixing zone followed by the catalytic section, preparation of the air/fuel mixture is one of the most critical points.
- Mixing has to be carried out as fast as possible and as homogeneously as possible in order to limit self-ignition risks.
- There are also cases where the temperature of the air at the compressor outlet is too low to allow fast vaporization of the fuel.
- In order to obtain vaporization of a liquid fuel, one of the easiest procedures consists in projecting the fuel at high velocity onto a surface, preferably a plane surface, and perpendicular thereto. Such injection modes are for example used for catalytic cracking, but the grain sizes obtained remain rather coarse (average diameter of the droplets of the order of several hundred microns).
- The work carried out by the applicant has shown that it is possible to substantially improve the homogeneity of the air/fuel mixture and therefore to optimize control of the catalytic oxidation of the fuels, and to limit the discharge of pollutant gases by improving the vaporization of the liquid fuel so as to obtain finer droplets.
- More precisely, the invention relates to a catalytic combustion device comprising a main combustion zone including at least one catalytic stage, at least one air/fuel mixing zone, said mixing zone comprising at least one pressurized air inlet, and injection means for injecting a liquid fuel, characterised in that the injection means project the liquid fuel onto a wall heated by the combustion of the air/fuel mixture in the main combustion zone, so as to allow vaporization of said fuel on contact with this wall.
- The invention allows to substantially reduce the diameter of the liquid droplets by sending a primary liquid jet onto a surface whose temperature is higher than the maximum boiling temperature of said fuel under the pressure conditions of the combustion zone.
- This primary liquid jet can be advantageously sprayed by any injector or spraying system known to the man skilled in the art.
- Injectors allowing primary spraying of the fuel with liquid droplets whose average diameter ranges between 5 and 60 μm (10−6 metre), preferably between 10 and 40 μm, are generally used.
- It has been found by the applicant that the surface temperature of the wall encountered by the primary jet is advantageously substantially equal to or greater, at the pressure considered, than a first temperature TN of the wall corresponding to a maximum boiling temperature of the liquid.
- At this temperature TN, the intense thermal exchanges between the wall and the fuel lead to an intense spraying of the liquid fuel (also referred to as Nukiyama temperature). A substantially equal temperature is understood to be a temperature greater or less than said temperature by 100° C., preferably greater or less than said temperature by 50° C., and most preferably greater or less than said temperature by 20° C.
- It has also been found by the applicant that it is possible, according to another embodiment of the invention, to advantageously obtain a great fragmentation of the liquid droplets from the primary jet by applying a temperature substantially ranging between said Nukiyama temperature and a temperature TL in the neighbourhood of which and beyond which the thermal transfers are reduced by the presence of a vapour film between the droplet and the wall (referred to as Leidenfrost temperature).
- It is also possible, without departing from the scope of the invention, to apply a temperature greater than said Leidenfrost temperature, above which the evaporation time of the liquid droplets decreases as a result of the increase, with the wall, of the heat transfers by conduction, convection and radiation.
- Control of the wall temperature will thus condition the size of the droplets and can be obtained by means of any technique known to the man skilled in the art.
- Such an injection strategy has many advantages during preparation of the air/fuel mixture for catalytic combustion:
- In relation to a conventional configuration of the catalytic combustion device with premixer and catalytic section, a layout with such an injection mode allows to obtain faster vaporization of the liquid fuel, in particular those with rather high final vaporization temperatures. This is the case with certain gas oils for example. Under such conditions, premixing of the air with the fuel can be obtained more rapidly.
- The arrangement which is the object of the present invention can also contribute to cooling the walls of the combustion or postcombustion zones, or of the zone carrying the hot gases to the expander.
- In cases where the temperature of the air at the compressor outlet feeding the catalytic combustion-device is insufficient to obtain complete vaporization of the fuel, the proposed solution allows to overcome this problem thanks to the heat transfer between the combustion or postcombustion zone and the fuel injection zone.
- It allows to envisage a significant reduction in the total volume of the combustion zone since the zone normally reserved for vaporization of the fuel and premixing disappears.
- In general, the hot wall on which the fuel is sprayed is the wall of the combustion or postcombustion zone or of the zone carrying the hot gases resulting from the combustion or the wall of the starting equipment which can be, for example, a flame combustion chamber, an electric heater or any other device known to the man skilled in the art.
- According to an embodiment of the invention, the means intended for injection of the liquid fuel are injectors allowing primary spraying, whose orientation and characteristics are calculated so as to obtain the most homogeneous possible distribution of the fuel in the combustion air, and the size of the droplets sent by said injector ranges between 5 and 60 μm, preferably between 10 and 40 μm, and most preferably between 20 and 30 μm.
- Advantageously, the hot wall of the zone opposite said injection means has a substantially plane shape.
- It is also possible, without departing from the scope of the invention, that the hot wall of the zone opposite the injectors has a curved shape, concave for example.
- It is advantageous that the zone receiving the impact of the fuel jets is equipped with devices allowing to increase the heat transfer from the hot zone to the spraying zone.
- The device according to the present invention finds applications for example in gas turbines equipped with a heat recuperator or in combustion chambers having an annular geometry.
- Other features and advantages of the present invention will be clear from reading the description hereafter, given by way of non limitative example, of two different embodiments of the device according to the invention, with reference to the accompanying figures wherein:
- FIG. 1 shows an example of an embodiment where the fuel is injected onto a hot wall of a combustion initiating device consisting of a pilot burner, and
- FIG. 2 shows another example of an embodiment where the fuel is injected onto a hot wall of a postcombustion zone.
- The combustion device diagrammatically shown in FIG. 1 comprises an
inlet 1 for pressurized air coming from a compressor (not shown in the figure). This air circulates in a peripheralannular space 2 prior to reaching a distribution box 3 where it is separated into a stream intended for a combustion initiation device, here apilot burner 4, and a stream sent to acatalytic section 5. - A device, not shown in the figure, can be provided in the vicinity of this distribution box3 in order to separate the air in an optimum way whatever the running conditions of the machine.
- The pilot burner shown in FIG. 1 is a conventional flame burner. It comprises a central
fuel delivery line 6, anair box 7, means 8 such as blades, for example, for adjusting the velocity and the rotation of the combustion air before it enterscombustion zone 9 of the pilot burner, anoutlet zone 10 for the fumes produced by the pilot burner, said outlet running right throughcatalytic section 5. - This pilot burner can also be an equipment known to the man skilled in the art and reputed to discharge low nitrogen oxides amounts, such as for example systems in which the combustion air is brought into rotation in blades, with injection of the fuel inside the blades, or part thereof, or in the immediate vicinity of these blades.
-
Main combustion zone 20 comprises an air/fuel mixing zone 11 arranged downstream from distribution box 3, liquid fuelmechanical spray injectors 12 equally distributed for example on the periphery of mixingzone 11 and ofcatalytic section 5. -
Injectors 12 produce a liquid fuel jet sent ontohot wall 13 ofpilot burner 4 and they allow primary spraying of this fuel with liquid droplets whose average diameter ranges between 5 and 60 μm (10−6 metre), preferably between 10 and 40 μm. - This jet is preferably substantially perpendicular to the hot wall. Substantially perpendicular means that the angle between the surface of the hot wall in relation to the axis of the jet more preferably ranges between 80° and 100°.
- Of course, this angle can range between 40° and 140°, preferably between 60° and 120°.
-
Wall 13 is heated by the combustion of the air/fuel mixture insection 5 and by contact with the hot wall, the liquid fuel is vaporized while dividing into very fine droplets which are some microns in average diameter (10−6 m) and carried along by the combustion air. The number of injectors, their orientation in relation to the hot surface and the characteristics of the injectors are calculated by the man skilled in the art so as to obtain the most homogeneous possible distribution of the fuel in the gaseous stream, once the fine droplets sprayed. The gaseous air/fuel mixture flows then intocatalytic section 5 which often consists of one or more monoliths arranged in parallel or in series, in order to limit pressure drops. When the combustion of the air/fuel mixture is not complete in the catalytic section, it continues inzone 14, referred to as postcombustion zone, provided therefore. -
Wall 15 which is in contact withpostcombustion zone 14 or withcatalytic section 5 is also heated by the combustion of the air/fuel mixture incatalytic section 5, and it is possible to arrangeinjectors 12 opposite this wall. - According to a variant, in order to optimize spraying of the droplets,
wall 13 ofpilot burner 4 opposite the injectors can have a substantially plane shape, or even curved or concave so that all of the liquid fuel droplets sent by the injector impact as perpendicular as possible the hot surface where they are intended to fragment and disintegrate. - Without departing from the scope of the invention, it is of course possible to use any known device allowing such an effect to be obtained, such as for example the presence of inserts of substantially plane or convex curved shape.
- FIG. 2 is another possible illustration of the invention.
- It also comprises an
inlet 101 for pressurized air coming from the compressor (not shown in the figure), a combustion initiation device 102 (or pilot burner) andmain combustion zone 200 with itscatalytic section 103 proper. - The combustion air circulates in a substantially annular
peripheral space 104. The fuel is introduced by means ofinjectors 105 fastened to and substantially equally distributed onouter wall 106 ofannular space 104. These injectors can be mechanical (without spraying assistance) or air-blast injectors (with the assistance of a spraying fluid) or any other equivalent device. The jets produced by these injectors are sent ontohot wall 107 which separatesannular space 104 fromzone 108, which can be a postcombustion zone or simply a connection zone betweencatalytic section 103 and the expander (not shown in the figure) and, on contact with this hot wall, the liquid fuel is sprayed as very fine droplets. - As described above,
injectors 105 produce a fuel jet with a primary spray containing liquid droplets whose average diameter ranges between 5 and 60 μm (10−6 metre), preferably between 10 and 40 μm. - Advantageously, certain parts of
wall 107 can be covered with insulating materials in order to prevent hot spots which can lead to an early ignition of the air/fuel mixture. - Conversely,
zone 120 ofwall 107, which receives the impact of the jets, can be equipped with devices such as blades in order to increase the heat transfer fromhot zone 108 to sprayingzone 104. - As in the previous case, the number of injectors, their orientation in relation to the hot wall and their characteristics are calculated by the man skilled in the art so as to obtain the most homogeneous possible distribution of the fuel once the droplets sprayed.
-
Annular zone 104 is ended by adistributor 109 which distributes the air/fuel mixture amongpilot burner 102 and maincatalytic section 103. This distribution can for example be obtained by means of amobile shutter 110 which alternately moves in front ofinlet 111 ofcatalytic section 103 or in front ofinlet 112 ofpilot burner 102, according to the running conditions of the machine. - The pilot burner can be a device such as shown in FIG. 1. It can also be a system as shown in FIG. 2, i.e. consisting of an initiating
catalytic section 121, fed by acircuit 113 arranged afterdistributor 109. This catalytic section can be a metal monolith preheated by Joule effect, by means of an electric power supply consisting of anyelectricity source 114, of twometallic connectors 115 arranged at each end of the monolith and of anelectric link 116 connecting saidconnectors 115 toelectricity source 114. - Main
catalytic section 103 comprises adistribution box 117 for the air/fuel mixture, and this box can be equipped for example with aperforated plate 118 intended to provide homogeneous feeding of all the constituent channels of the monolith. - This
plate 118 can also be a monolith of very limited thickness, intended to stop any flame in case of unwanted self-ignition of the air/fuel mixture, inspace 119 between saidplate 118 and maincatalytic section 103. The latter can consist of one or more monoliths arranged in series or in parallel. - As in the previous case, a
free space 108 can be provided downstream fromcatalytic section 103, before the expander (not shown), which is intended to complete the combustion of the air/fuel mixture if it has not completely burned in the catalytic section. -
Catalytic sections pilot burner 102 can for example have a high precious metal content, precious metals being known for their efficiency for catalytic combustion, and combustion can thus start from 200° C. or 250° C. - The invention can also be applied to gas turbine configurations with a heat recuperator or to combustion chambers having an annular geometry.
Claims (13)
1) A catalytic combustion device comprising a main combustion zone (20, 200) including at least one catalytic section (5, 103), at least one air/fuel mixing zone (11, 117), said mixing zone comprising at least one pressurized air inlet (1, 101), and liquid fuel injection means (12, 105), characterised in that injection means (12, 105) project the liquid fuel onto a wall heated by the combustion of the air/fuel mixture main combustion zone (13, 15, 107) so as to allow vaporization of said fuel on contact with said wall.
2) A device as claimed in claim 1 , characterised in that the fuel is projected substantially perpendicular to hot wall (13, 15, 107).
3) A device as claimed in claim 1 or 2, characterised in that said hot wall (15) consists at least partly of at least one of the walls of main combustion zone (20).
4) A device as claimed in claim 1 or 2, further comprising a combustion initiation zone (4, 102), characterised in that said hot wall (13) consists at least partly of at least one of the walls of combustion initiation zone (4).
5) A device as claimed in any one of claims 1 or 2, wherein at least one postcombustion zone (14, 108) is arranged downstream from main combustion zone (20, 200), characterised in that hot wall (15, 107) consists at least partly of at least one of the walls of said postcombustion zone.
6) A device as claimed in any one of the previous claims, characterised in that the means allowing injection of the liquid fuel are injectors (12, 105) providing primary spraying such that the size of the droplets coming from said injectors (12, 105) ranges between 5 and 60 μm, preferably between 10 and 40 μm
7) A device as claimed in any one of the previous claims, characterised in that hot wall (13, 15, 107) of the zone opposite said injection means has a substantially plane shape.
8) A device as claimed in any one of claims 1 to 6 , characterised in that hot wall (13, 15, 107) of the zone opposite the injectors has a concave curved shape.
9) A device as claimed in any one of the previous claims, characterised in that the temperature of said hot wall (13, 15, 107) of said device is substantially equal to or higher than the maximum boiling temperature of the liquid fuel on said wall.
10) A device as claimed in any one of the previous claims, characterised in that wall (107) receiving the impact of the fuel jets is equipped with means allowing to increase the heat transfer from the hot zone to the spraying zone.
11) A device as claimed in any one of the previous claims, characterised in that wall (107) is covered at least partly with an insulating material, except for a zone (120) receiving the impact of the fuel jets.
12) Application of the device as claimed in any one of the previous claims to gas turbines provided with a heat recuperator.
13) Application of the device as claimed in any one of claims 1 to 11 to combustion chambers of annular geometry.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0016107A FR2817946B1 (en) | 2000-12-11 | 2000-12-11 | CATALYTIC COMBUSTION DEVICE WITH SPRAYING LIQUID FUEL ON HOT WALLS |
FR00/16107 | 2000-12-11 | ||
PCT/FR2001/003850 WO2002048610A1 (en) | 2000-12-11 | 2001-12-05 | Catalytic combustion device with liquid fuel vaporisation on hot walls |
Publications (1)
Publication Number | Publication Date |
---|---|
US20040048211A1 true US20040048211A1 (en) | 2004-03-11 |
Family
ID=8857509
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/433,792 Abandoned US20040048211A1 (en) | 2000-12-11 | 2001-12-05 | Catalytic combustion device with liquid fuel vaporisation on hot walls |
Country Status (7)
Country | Link |
---|---|
US (1) | US20040048211A1 (en) |
EP (1) | EP1344000B1 (en) |
JP (1) | JP2004515741A (en) |
AT (1) | ATE348979T1 (en) |
DE (1) | DE60125412T2 (en) |
FR (1) | FR2817946B1 (en) |
WO (1) | WO2002048610A1 (en) |
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US20040187499A1 (en) * | 2003-03-26 | 2004-09-30 | Shahram Farhangi | Apparatus for mixing fluids |
US20040187498A1 (en) * | 2003-03-26 | 2004-09-30 | Sprouse Kenneth M. | Apparatus and method for selecting a flow mixture |
US20050188703A1 (en) * | 2004-02-26 | 2005-09-01 | Sprouse Kenneth M. | Non-swirl dry low nox (dln) combustor |
US20070130830A1 (en) * | 2005-12-14 | 2007-06-14 | Balachandar Varatharajan | Staged combustion for a fuel reformer |
US20080020333A1 (en) * | 2006-06-14 | 2008-01-24 | Smaling Rudolf M | Dual reaction zone fuel reformer and associated method |
US20080318174A1 (en) * | 2006-04-14 | 2008-12-25 | Christophe Leclerc | Gas burner for oven |
US20140295358A1 (en) * | 2013-03-27 | 2014-10-02 | Oilon Oy | Method and apparatus for burning hydrocarbons and other liquids and gases |
US10378760B2 (en) * | 2013-10-14 | 2019-08-13 | Cogebio | Lean gas burner |
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US7444820B2 (en) * | 2004-10-20 | 2008-11-04 | United Technologies Corporation | Method and system for rich-lean catalytic combustion |
SE536578C2 (en) * | 2012-05-15 | 2014-03-04 | Reformtech Heating Holding Ab | Fuel injection system for use in a catalytic heater and reactor for conducting catalytic combustion liquid fuels |
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CN113640337B (en) * | 2021-07-23 | 2024-04-05 | 哈尔滨工业大学 | Experimental device and experimental method for researching evaporation and coking of hydrocarbon fuel droplets on micro-scale hot wall surface |
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JPS5913831A (en) * | 1982-07-16 | 1984-01-24 | Toshiba Corp | Combustor of gas turbine |
JPH06249414A (en) * | 1993-02-26 | 1994-09-06 | Matsushita Electric Ind Co Ltd | Catalytic burner |
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JPH11264514A (en) * | 1998-03-18 | 1999-09-28 | Corona Corp | Catalyst combustion device |
US6632085B1 (en) * | 1999-08-19 | 2003-10-14 | Matsushita Electric Industrial Co., Ltd. | Catalyst combustion device and fuel vaporizing device |
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- 2000-12-11 FR FR0016107A patent/FR2817946B1/en not_active Expired - Fee Related
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2001
- 2001-12-05 DE DE60125412T patent/DE60125412T2/en not_active Expired - Lifetime
- 2001-12-05 AT AT01270733T patent/ATE348979T1/en not_active IP Right Cessation
- 2001-12-05 US US10/433,792 patent/US20040048211A1/en not_active Abandoned
- 2001-12-05 EP EP01270733A patent/EP1344000B1/en not_active Expired - Lifetime
- 2001-12-05 JP JP2002549886A patent/JP2004515741A/en active Pending
- 2001-12-05 WO PCT/FR2001/003850 patent/WO2002048610A1/en active IP Right Grant
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Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040187499A1 (en) * | 2003-03-26 | 2004-09-30 | Shahram Farhangi | Apparatus for mixing fluids |
US20040187498A1 (en) * | 2003-03-26 | 2004-09-30 | Sprouse Kenneth M. | Apparatus and method for selecting a flow mixture |
US7007486B2 (en) * | 2003-03-26 | 2006-03-07 | The Boeing Company | Apparatus and method for selecting a flow mixture |
US7117676B2 (en) * | 2003-03-26 | 2006-10-10 | United Technologies Corporation | Apparatus for mixing fluids |
US20050188703A1 (en) * | 2004-02-26 | 2005-09-01 | Sprouse Kenneth M. | Non-swirl dry low nox (dln) combustor |
US7127899B2 (en) | 2004-02-26 | 2006-10-31 | United Technologies Corporation | Non-swirl dry low NOx (DLN) combustor |
US20070130830A1 (en) * | 2005-12-14 | 2007-06-14 | Balachandar Varatharajan | Staged combustion for a fuel reformer |
US20080318174A1 (en) * | 2006-04-14 | 2008-12-25 | Christophe Leclerc | Gas burner for oven |
US7665987B2 (en) * | 2006-04-14 | 2010-02-23 | Thirode Grandes Cuisines Poligny | Gas burner for oven |
US20080020333A1 (en) * | 2006-06-14 | 2008-01-24 | Smaling Rudolf M | Dual reaction zone fuel reformer and associated method |
US20140295358A1 (en) * | 2013-03-27 | 2014-10-02 | Oilon Oy | Method and apparatus for burning hydrocarbons and other liquids and gases |
US10378760B2 (en) * | 2013-10-14 | 2019-08-13 | Cogebio | Lean gas burner |
Also Published As
Publication number | Publication date |
---|---|
FR2817946B1 (en) | 2003-03-21 |
DE60125412D1 (en) | 2007-02-01 |
FR2817946A1 (en) | 2002-06-14 |
EP1344000A1 (en) | 2003-09-17 |
DE60125412T2 (en) | 2007-09-27 |
EP1344000B1 (en) | 2006-12-20 |
WO2002048610A1 (en) | 2002-06-20 |
ATE348979T1 (en) | 2007-01-15 |
JP2004515741A (en) | 2004-05-27 |
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