CN104235839B - Catalytic reforming microburner of liquid fuel - Google Patents
Catalytic reforming microburner of liquid fuel Download PDFInfo
- Publication number
- CN104235839B CN104235839B CN201410458783.8A CN201410458783A CN104235839B CN 104235839 B CN104235839 B CN 104235839B CN 201410458783 A CN201410458783 A CN 201410458783A CN 104235839 B CN104235839 B CN 104235839B
- Authority
- CN
- China
- Prior art keywords
- fuel
- symmetrical
- liquid fuel
- microburner
- housing
- 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.)
- Active
Links
Landscapes
- Hydrogen, Water And Hydrids (AREA)
Abstract
The invention relates to a combustion device, in particular to a catalytic reforming microburner of liquid fuel. The catalytic reforming microburner of the liquid fuel comprises a round top cover plate and a shell connected with the top cover plate into a whole, wherein the top cover plate is provided with two symmetrical fuel inlet holes; the upper part of the side surface of the shell is provided with two symmetrical air inlet holes; the lower part of the side surface of the shell is provided with two symmetrical vent holes; the center of the bottom of the shell is provided with an igniter hole; a fuel channel and an air channel are in crossed communication at an angle of 90 degrees; the fuel channel and the air channel are communicated with one side of a combustion chamber; an exhaust duct is communicated with the other side of the combustion chamber. The catalytic reforming microburner of the liquid fuel has the beneficial effects that the fuel channel and the surface of the combustion chamber are provided with annular threads to enlarge heat exchange areas and reinforce heat exchange between fuel and high-temperature smoke; the fuel channel and the surface of the combustion chamber are respectively provided with cracking catalyst/ reforming catalyst and combustion catalyst, and liquid fuel can be enabled to efficiently burn in the microburner.
Description
Technical field
The present invention relates to a kind of burner, be specifically related to a kind of liquid fuel catalytic reforming microburner.
Background technology
Miniature energy supplying system with micro-scale burner as core is little with its volume, light weight, energy density are high, energy supply time
Between the advantage such as long increasingly come into one's own.But the size of micro-scale burner is little several orders of magnitude than conventional burners, its
Little characteristic dimension makes specific surface area increase, and rate of heat dispation is greatly improved, and causes serious heat loss so that flame is difficult
With stable, easily there is flame-out phenomenon；Meanwhile, the reduction of size, cause fuel and the air time of staying in the burner short,
It cannot be guaranteed that the abundant burning of fuel, especially liquid fuel.Therefore, in miniature scale, realize stable burning and do not put out
Fire is the difficult problem that microburner primarily solves.
The many burnings for gaseous fuel of microburner at present.Compared with gas fuel combustion, liquid fuel security performance
Excellent, be easy to store transport and there is higher energy density, have more practicality.But liquid fuel micro-scale gas flow is
The evaporation of one limit, limit mixing, the process of limit burning, the subject matter existed is that atomization, evaporation are more difficult, undercompounding,
Cause that combustion instability, efficiency of combustion are low, radiation loss is big.At present, some micro-burner uses porous media to make liquid
Fuel is fully atomized, but still can not solve ignition problem well, and after burning, Thermal Synthetic utilization ratio is relatively low, product
Middle CO yield is higher, causes environmental pollution.
Accordingly, it would be desirable to one is for the custom-designed microburner of liquid fuel so that it is be substantially improved the micro-chi of liquid fuel
The combustibility of degree burning.
Summary of the invention
In order to solve combustion instability, efficiency of combustion during the liquid fuel micro-scale gas flow that prior art exists low and
The problem that Thermal Synthetic utilization ratio is low, it is proposed that a kind of liquid fuel catalytic reforming microburner.
For solving technical problem, the solution of the present invention is:
A kind of liquid fuel catalytic reforming microburner, the shell being integrally connected including circular top cover plate and lamina tecti are provided
Body, described lamina tecti offers two symmetrical fuel inlet aperture, described housing side surface upper part offer two symmetrical
Air inlet holes, housing side lower offers two symmetrical steam vents, and housing bottom center offers igniter aperture；
Described enclosure interior is provided with inner barrel, intermediate sleeve and outer barrel, and described air duct is located at housing and outer sheath
Between Tong, and it is connected with air intlet；Exhaust passage is located between outer barrel and intermediate sleeve, and and air exit
It is connected；Fuel channel is located between intermediate sleeve and inner barrel, and is connected with fuel inlet；In combustor is located at
In the sleeve of side；Wherein: intersect in 90 ° between fuel channel with air duct and connect, fuel channel and air duct and combustion
Burning side, room to be connected, exhaust passage is connected with the opposite side of combustor.
In the present invention, two air intlets that two material inlet holes, the housing side surface upper part that described lamina tecti is provided with are provided with
Two steam vents that hole, housing side lower are provided with are symmetrical respectively about the axis at place, the circular top cover plate center of circle.
In the present invention, the inner side of described inner barrel, outside are equipped with ring screw, to increase surface area and heat-transfer intensity.
In the present invention, the outside screw of described inner barrel is provided with liquid fuel cracking reforming catalyst layer, and this liquid fires
In material cracking reforming catalyst layer, the composition of contained catalyst is CuO/ZnO/Al2O3, CuO is as major catalyst, ZnO
And Al2O3As promoter, for liquid fuel is cracked/be restructured as CO, CH4Or H2Deng inflammable gas.
In the present invention, the inside thread of described inner barrel is provided with combustion catalyst layer, contained in this combustion catalyst layer
The composition having catalyst is platinum Pt, is used for improving fuel economy.
In the present invention, described lamina tecti and housing all use the material that heat conductivity is low, such as pottery, in order that reducing miniature
The outwardly heat radiation of burner, improves burner overall thermal efficiency.Described sleeve group is by outer barrel, intermediate sleeve, interior
Side sleeve composition, sleeve group uses heat conductivity material high, resistant to elevated temperatures, such as the rustless steel of high nickel content.
In the present invention, the height of described fuel channel, combustor and exhaust passage is the most equal.
In the present invention, the height of burner is 25～35mm, and lamina tecti thickness is 2mm, and thickness of shell is 2mm, combustion
Material channel width is 1.5mm, and height is 20～25mm, and inner barrel thickness is 1.5mm, and intermediate sleeve thickness is
1.5mm, outer barrel thickness is 1.2mm, and combustor internal diameter is 3～3.5mm, and height is 20～25mm, and air leads to
Road width is 2.5～3mm, and air duct bottom is 1～1.5mm with the spacing of housing bottom, and exhaust passage width is
4～5mm, height is 20～25mm, the most also meets following relationship:
Air channel width=exhaust passage width-(1.5～2mm).
Compared with prior art, the invention has the beneficial effects as follows:
1, the present invention uses fuel channel and combustor surface to be provided with ring screw, not only adds heat exchange area, adds
Strong fuel and the heat transfer of high-temperature flue gas；And add catalyst area.
2, the present invention uses fuel channel and combustor surface to be respectively provided with cracking/reforming catalyst and combustion catalyst,
Enhance liquid fuel to reform and the effect of catalysis burning, it is possible to ensure liquid fuel efficient burning in micro-burner.
3, the fuel channel of the present invention, air duct and combustor, the alternate layout in exhaust passage, it is achieved that fume afterheat
Ladder recycle, complete air preheat and fuel-pyrolysis.
4, catalytic reforming and catalysis burning are combined by the present invention, after making merely liquid fuel atomization, evaporation
Burning is compared, and liquid fuel first passes through catalytic pyrolysis and makes it be converted into CH4、H2With mixed gas such as CO, then carry out
Burning, it is easy to accomplish igniting and flameholding.
Accompanying drawing explanation
Fig. 1 is the generalized section of a kind of catalytic reforming microburner of the present invention；
Fig. 2 is a kind of catalytic reforming microburner casing cross-section schematic diagram of the present invention；
Fig. 3 is a kind of catalytic reforming microburner lamina tecti top view of the present invention；
Fig. 4 is a kind of catalytic reforming microburner sleeve group half sectional view of the present invention；
Fig. 5 is along A-A directional profile schematic diagram in Fig. 1；
Fig. 6 is along B-B directional profile schematic diagram in Fig. 1；
Fig. 7 is the enlarged drawing of threaded portion I in inner barrel in Fig. 1；
Reference: lamina tecti 1, air intlet 2, housing 3, air duct 4, outer barrel 5, air exit 6,
Igniter aperture 7, combustor 8, inner barrel 9, fuel channel 10, intermediate sleeve 11, exhaust passage 12, fuel enters
Mouth 13.
Detailed description of the invention
Below example can make the technical staff of this professional skill field more fully understand the present invention, but not to appoint
Where formula limits the present invention:
As shown in Fig. 1～7, the embodiment of the present invention provides a kind of liquid fuel catalytic reforming microburner specific embodiment,
The housing 3 being integrally connected including circular top cover plate 1 and lamina tecti 1, described lamina tecti 1 offers two symmetrical
Fuel inlet 13 hole, described housing 3 side surface upper part offers two symmetrical air intlet 2 holes, under housing 3 side
Portion offers two symmetrical steam vents, offers igniter aperture 7 at housing 3 bottom centre；The internal peace of described housing 3
Equipped with inner barrel 9, intermediate sleeve 11 and outer barrel 5, described air duct 4 is located at housing 3 and outer barrel 5
Between, and be connected with air intlet 2；Exhaust passage 12 is located between outer barrel 5 and intermediate sleeve 11, and with
Air exit 6 is connected；Fuel channel 10 is located between intermediate sleeve 11 and inner barrel 9, and with fuel inlet 13
It is connected；Combustor 8 is located in inner barrel 9；Wherein: in 90 ° of friendships between fuel channel 10 and air duct 4
Fork connection, fuel channel 10 is connected with combustor 8 side with air duct 4, exhaust passage 12 and combustor 8
Opposite side is connected.
Two air intlet 2 holes that described lamina tecti 1 be provided with two material inlet hole, housing 3 side surface upper part are provided with,
Two steam vents that housing 3 side lower is provided with are symmetrical respectively about the axis at place, circular top cover plate 1 center of circle.
In described inner barrel 9, outside is equipped with ring screw, to increase surface area and heat-transfer intensity；Wherein: in described
Side sleeve 9 outside screw is provided with liquid fuel cracking reforming catalyst layer, in this liquid fuel cracking reforming catalyst layer
The composition of contained catalyst is CuO/ZnO/Al2O3, CuO is as major catalyst, ZnO and Al2O3As promoter,
For liquid fuel is cracked/is restructured as CO, CH4Or H2Deng inflammable gas；
Described inner barrel 9 inside thread is provided with combustion catalyst layer, contained catalyst in this combustion catalyst layer
Composition is platinum Pt, is used for improving fuel economy.
Fig. 1 is the generalized section of the present embodiment liquid fuel catalytic reforming microburner, symmetrical, whole combustion
The height of burner adjusts as required between 25～35mm.With methanol aqueous solution as liquid fuel in the present embodiment.
In the present embodiment, the structure of lamina tecti 1 is as it is shown on figure 3, it is generally circular in shape, and thickness is 2mm, the distance center of circle
Having two symmetrical fuel inlet aperture at certain position, lamina tecti 1 uses the material that heat conductivity is low, such as pottery.
The structure of housing 3 is as in figure 2 it is shown, it uses heat conductivity low or the material of insulation, and thickness is 2mm, housing 3
Side surface upper part is provided with two symmetrical air intlets 2, and its side lower is provided with two symmetrical air exits 6, at shell
An igniter aperture 7 is had, for set-point firearm at body 3 bottom dead center position.
Fuel channel 10 is located in the region between inner barrel 9 and intermediate sleeve 11, and width is 1.5mm, and height is
20～25mm.Inner barrel 9, the thickness of intermediate sleeve 11 are 1.5mm, select heat conductivity material good, resistant to elevated temperatures
Material, such as the rustless steel of high nickel content.
Fig. 7 is the schematic diagram after being amplified according to 4:1 ratio of the fuel channel 10 in this example with ring screw,
The isosceles trapezoid screw thread that screw thread selects thread form angle to be 30 °, it has preferable intensity.Outside screw is coated with
CuO/ZnO/Al2O3As fuel reforming catalyst, CuO is as major catalyst, ZnO and Al2O3As promoter,
To strengthen the catalysis activity of catalyst, convert gas impurity few.
Methanol aqueous solution is heated in fuel channel, evaporates catalytic reforming generation H2, be conducive to catching fire.
In the region that combustor 8 is formed in being located at inner barrel 9, a diameter of 3～3.5mm, height is 20～25mm,
Combustor 8 inside thread is coated with Pt catalyst.Mixed gas after air and catalytic reforming is at Pt catalyst
Under effect, there is catalyst combustion reaction.
Air duct 4 is located between housing 3 and outer barrel 5 in the region surrounded, and width is 2.5～3mm, outer sheath
The thickness of cylinder is 1.2mm, and air is entered air duct 4, air duct 4 bottom and housing 3 bottom by air intlet 2
Distance 1～1.5mm so that its acceleration and pressure decrease, preferably mix with fuel, enter in combustor 8 and burn.
Exhaust passage 12 is located between intermediate sleeve 11 and outer barrel 5 in area defined, and width is 4～5mm,
It is highly 20～25mm.The flue gas that burning generates in combustor 8 enters and is attached thereto logical exhaust passage 12, finally
Discharged by the air exit 6 being opened in outer barrel 5 bottom.Flue gas flows in exhaust passage 6 from top to bottom, to sky
Gas preheats, and improves ignition performance and improves combustion stability.
Last it should be noted that above-described embodiment is only in order to illustrate technical scheme, it is not limited to this
Bright protection domain.Therefore, any modification, equivalent substitution and improvement etc. suitable with claims of the present invention, all recognize
For being included in the range of claims.
Claims (6)
1. a liquid fuel catalytic reforming microburner, including circular top cover plate, it is characterised in that also include with
The housing that lamina tecti is integrally connected, described lamina tecti offers two symmetrical fuel inlet aperture, on described housing side
Portion offers two symmetrical air inlet holes, and housing side lower offers two symmetrical steam vents, in housing bottom
Igniter aperture is offered at the heart；Described enclosure interior is provided with inner barrel, intermediate sleeve and outer barrel, and housing is with outer
The region that side sleeve surrounds is air duct, and air duct is connected with air intlet；Outer barrel is located in exhaust passage
And between intermediate sleeve, and it is connected with air exit；Fuel channel is located between intermediate sleeve and inner barrel, and with
Fuel inlet is connected；Combustor is located in inner barrel；Wherein: intersect in 90 ° between fuel channel with air duct
Connection, fuel channel is connected with combustor side with air duct, and exhaust passage is connected with the opposite side of combustor.
2. according to the burner described in claim 1, it is characterised in that be provided with two of described lamina tecti expect into
Two steam vents that two air inlet holes that oral pore, housing side surface upper part are provided with, housing side lower are provided with respectively about
The axis at place, the circular top cover plate center of circle is symmetrical.
3. according to the burner described in claim 1, it is characterised in that the inner side of described inner barrel, outside are equal
It is provided with ring screw.
4. according to the burner described in claim 3, it is characterised in that the exterior annular screw thread of described inner barrel
It is provided with liquid fuel cracking reforming catalyst layer.
5. according to the burner described in claim 3, it is characterised in that the interior annular screw thread of described inner barrel
It is provided with combustion catalyst layer.
6. according to the burner described in claim 1, it is characterised in that described fuel channel, combustor and aerofluxus
The height of passage is the most equal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410458783.8A CN104235839B (en) | 2014-09-11 | 2014-09-11 | Catalytic reforming microburner of liquid fuel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410458783.8A CN104235839B (en) | 2014-09-11 | 2014-09-11 | Catalytic reforming microburner of liquid fuel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104235839A CN104235839A (en) | 2014-12-24 |
| CN104235839B true CN104235839B (en) | 2017-01-11 |
Family
ID=52224439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410458783.8A Active CN104235839B (en) | 2014-09-11 | 2014-09-11 | Catalytic reforming microburner of liquid fuel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104235839B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105674260B (en) * | 2016-03-17 | 2018-11-02 | 华南理工大学 | A kind of minisize liquid burner and its combustion method with double preheating structure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007093179A (en) * | 2005-09-30 | 2007-04-12 | Ishikawajima Harima Heavy Ind Co Ltd | Micro-combustor |
| CN201531879U (en) * | 2009-11-26 | 2010-07-21 | 重庆大学 | Pre-mix catalytic reformation micro-burner of gas hydrocarbon fuel and moist air |
| CN201568964U (en) * | 2009-10-30 | 2010-09-01 | 华南理工大学 | Micro-combustor adopting applied electric field |
| CN101852432A (en) * | 2010-06-08 | 2010-10-06 | 华南理工大学 | Heat regenerative liquid fuel micro-burner |
| CN101975397A (en) * | 2010-09-30 | 2011-02-16 | 北京理工大学 | Liquid-fuel micro-combustor and design method thereof |
| CN202002103U (en) * | 2011-03-21 | 2011-10-05 | 重庆大学 | Pen-container-type micro stepping catalytic reforming burner |
| CN204165048U (en) * | 2014-09-11 | 2015-02-18 | 浙江大学 | A kind of liquid fuel catalytic reforming microburner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW201327884A (en) * | 2011-12-16 | 2013-07-01 | Univ Nat Cheng Kung | A combustor applied in thermophotovoltaic system |
-
2014
- 2014-09-11 CN CN201410458783.8A patent/CN104235839B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007093179A (en) * | 2005-09-30 | 2007-04-12 | Ishikawajima Harima Heavy Ind Co Ltd | Micro-combustor |
| CN201568964U (en) * | 2009-10-30 | 2010-09-01 | 华南理工大学 | Micro-combustor adopting applied electric field |
| CN201531879U (en) * | 2009-11-26 | 2010-07-21 | 重庆大学 | Pre-mix catalytic reformation micro-burner of gas hydrocarbon fuel and moist air |
| CN101852432A (en) * | 2010-06-08 | 2010-10-06 | 华南理工大学 | Heat regenerative liquid fuel micro-burner |
| CN101975397A (en) * | 2010-09-30 | 2011-02-16 | 北京理工大学 | Liquid-fuel micro-combustor and design method thereof |
| CN202002103U (en) * | 2011-03-21 | 2011-10-05 | 重庆大学 | Pen-container-type micro stepping catalytic reforming burner |
| CN204165048U (en) * | 2014-09-11 | 2015-02-18 | 浙江大学 | A kind of liquid fuel catalytic reforming microburner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104235839A (en) | 2014-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6674045B2 (en) | Catalytic flameless combustion apparatus and combustion method with emission of pollutants lower than 1 ppm | |
| CN113294779B (en) | High-temperature air combustion device for ammonia gas | |
| CN102777898B (en) | A kind of special gasification burner for biological liquid fuel and combustion method | |
| CN206131080U (en) | Energy -concerving and environment -protective gas -cooker of full premix | |
| CA2876065A1 (en) | Gaseous fuel burner with high energy and combustion efficiency, low pollutant emission and increased heat transfer | |
| JP2019511696A5 (en) | ||
| WO2017157059A1 (en) | Miniature liquid combustor having double pre-heating structure, and combustion method thereof | |
| CN106907711A (en) | A kind of porous media combustor of radially layered with phase-transition heat-storage | |
| CN103234202B (en) | Injected flue gas return-flow low concentration coal bed gas combustor | |
| CN106196049B (en) | The microminiature multistage catalytic burner and combustion method of fire retardant gas or liquid fuel | |
| CN104748111B (en) | Micro-combustor for metal mesh heat storage and flame stabilization and combustion method thereof | |
| CN104235839B (en) | Catalytic reforming microburner of liquid fuel | |
| CN101598336A (en) | The alcohol-group fuel burner of band radiant panel fuel nozzle | |
| CN202581311U (en) | High-hydrogen fuel gas burner | |
| CN201421088Y (en) | Annular combustor | |
| CN204165048U (en) | A kind of liquid fuel catalytic reforming microburner | |
| CN109237476B (en) | A kind of spherical burner for micro-scale gas flow | |
| CN207569870U (en) | Multi-port metal fiber burner | |
| Kashyap et al. | A review of energy-efficient domestic cookstoves | |
| CN109307267A (en) | A kind of burner fire lid, low flame burner and gas-cooker | |
| CN209655301U (en) | It is suitble to the fuel gas combustion system of multitubular boiler | |
| CN206755166U (en) | Steam smoke-eliminating type mix flare burner | |
| CN208998070U (en) | A kind of minisize liquid burner of the porous injecting type of cylinder | |
| CN208517476U (en) | A kind of DX atmosphere heat treatment furnace | |
| CN207501189U (en) | A kind of vertical cylinder dual fuel burner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |