A kind of biomass carbonizing furnace with asymmetric burnerTechnical field
The present invention relates to retort technical fields more particularly to a kind of with the biomass carbonated of asymmetric burnerStove.
Background technology
Biomass pyrolytic carbonizes technology because low-quality biomass energy can be converted to the height that moisture content is low, calorific value is high by itQuality biomass carbon and it is gradually of interest by people.Chinese patent notification number CN202754940U, authorized announcement date are 2013 2The moon 27, invention and created name are a kind of pollution-free castoff regenerative retort of self-burning type, and that application discloses a kind of biomassRetort, the retort include carbonization chamber, combustion chamber and carbonization tank, and wherein both carbonization chamber and combustion chamber is respectively positioned in furnace body,Therebetween it is separated by baffle, carbonization tank is located in carbonization chamber, and when work, the carbonization tank keeps close by the fire door being arranged thereonEnvelope.The present invention is easy to control in-furnace temperature, is reaching conversion mesh using a kind of burner of low NOx asymmetrics as heat sourceWhile, improve burning adequacy and control NOx generation environment is impacted.
Invention content
An object of the present invention is in view of the deficiencies of the prior art, to overcome and be difficult to control burning in the prior artThe problem of room temperature is also easy to produce NOx in combustion process, and burning is not enough, provide one kind can improve charing efficiency but alsoEnergy-saving and environment-friendly biomass carbonizing furnace.
A kind of biomass carbonizing furnace with asymmetric burner includes the carbonization furnace body with combustion chamber；It is describedFeed inlet is offered on furnace body；It is provided with top pressure closure on the feed inlet；It is provided with sealed cistern around the feed inlet；The furnace bottom of the furnace body is provided with burner；The burner includes fuel discharge component, air pipeline, burner wall, ignitesDevice, Venturi tube, the fuel discharge component include discharge end, fuel riser, flame stabilization structure；The burner wallCircular air flue extends across burner wall；The flame stabilization structure is arranged the of the side of the axis of burner wallOne inside；The flame stabilization structure is arranged at the outlet end of burner wall；The Venturi tube is arranged in the another of axisThe second inside of side；The vacuum suction pipe of the Venturi tube extends to other than the outlet end of burner wall；The air pipeline is alsoIt is provided with guide vane, guide vane one end extends to the leading edge a of Venturi tube.
As a preferred embodiment, the fuel riser longitudinally cuts across air flue, one end extends to discharge end.
As a preferred embodiment, the discharge tip is preferably more than 15 millimeters -20 millimeters of the outlet of burner wall.
Tip or liquid fuel discharge tip is discharged as a preferred embodiment, fuel discharge tip is gaseous fuel,But preferably tip is discharged in gaseous fuel.
Tip or flat flame discharge tip is discharged as a preferred embodiment, fuel discharge tip is circular flame,It is preferred that tip is discharged in circular flame.
It is bored as a preferred embodiment, the flame stabilization structure is provided with stablizing for multiple ventholes, annular is uniformly distributedVenthole can allow air even into.
As a preferred embodiment, there is the flame stabilization structure leading edge b, the madial wall of leading edge b and burner wall to connectIt touches.
As a preferred embodiment, a diameter of D of the air flue, a diameter of d of the outlet of the flame stabilization structure,40%D < d < 50%D, this ratio are the optimization numerical value obtained in practice.
As a preferred embodiment, the igniter is arranged in the second inside of burner wall.
As a preferred embodiment, the burner wall is firebrick wall structure.
As a preferred embodiment, the upstream of the guide vane is provided with baffle, the flow for controlling whole combustion air.
Preferably as another, the Venturi tube fitting is fixed on the madial wall of burner wall.
Beneficial effects of the present invention：
(1) the present invention provides a kind of biomass carbonizing furnaces with asymmetric burner, using low NOx asymmetricsBurner solves the problems, such as generation NOx in the retort course of work as heat source, protects environment.
(2) present invention to be easy to control in the retort course of work using low NOx asymmetrics burner as heat sourceIt carbonizes rate and carbonizes the quality of product, one or more this kind of burner can be used as heat according to the requirement of retortSource.
(3) setting of burner of the invention, Venturi tube makes the effect of burner eccentric setting become apparent from, and fills in timeDivide shift mixed gas is burnt so that burning is fully and combustion distribution is uniform；The setting of guide vane to input Venturi tubeAir velocity faster, promote the working effect of Venturi tube to promote eccentric burner reduce NOx generate effectFruit.
Description of the drawings
For the clearer technical solution for illustrating the embodiment of the present invention, required use in being described below to embodimentAttached drawing be briefly described, it should be apparent that, drawings discussed below is only some embodiments of the present invention, for abilityFor the those of ordinary skill in domain, without creative efforts, it is attached to can also be obtained according to these attached drawings otherFigure.
Fig. 1 is a kind of structure sectional view of biomass carbonizing furnace with asymmetric burner.
Fig. 2 is a kind of asymmetric burner structure sectional view of biomass carbonizing furnace with asymmetric burner.
Fig. 3 is a kind of vertical view signal of the asymmetric burner of biomass carbonizing furnace with asymmetric burnerFigure.
Fig. 4 is that component is discharged in a kind of asymmetric burner fuel of biomass carbonizing furnace with asymmetric burnerStructural schematic diagram.
Fig. 5 is a kind of showing for the asymmetric burner Venturi tube of biomass carbonizing furnace with asymmetric burnerIt is intended to.
Label declaration：
1. combustion chamber, 2. furnace bodies, 3. top pressure closures, 4. furnace bottoms, 5. feed inlets, 6. sealed cisterns, 7. burners, 71. combustionsMaterial discharge component, 72. air pipelines, 73. burner walls, 74. igniters, 75. Venturi tubes, 76. air flues, 77. guide vanes,78. baffle, 711. discharge tips, 712. fuel risers, 713. flame stabilization structures, 721. inner walls, 731. madial walls, 732.Floss hole, 733. axis, 734. first insides, 735. second insides, 751. vacuum suction pipes, the areas 752.a, 753. exhaust outlets,754. leading edge a, 761. air flue a, 762. air flue b, 7511. ozzles, 771. ends, 7131. ventholes, 7132.Leading edge b, 7133. outlets.
Specific implementation mode
Technical solution in the embodiment of the present invention is clearly and completely illustrated below in conjunction with the accompanying drawings.
Embodiment one
Fig. 1 is a kind of structure sectional view of biomass carbonizing furnace with asymmetric burner, and Fig. 2 is a kind of with non-The asymmetric burner structure sectional view of the biomass carbonizing furnace of symmetrical burner, Fig. 3 are a kind of with asymmetric combustionThe schematic top plan view of the asymmetric burner of the biomass carbonizing furnace of burner, Fig. 4 are a kind of with asymmetric burnerThe structural schematic diagram of the asymmetric burner fuel discharge component of biomass carbonizing furnace, Fig. 5 are a kind of with asymmetric combustionThe schematic diagram of the asymmetric burner Venturi tube of the biomass carbonizing furnace of burner.As shown in Figure 1, Figure 2, Fig. 3, Fig. 4 and Fig. 5 instituteShow, a kind of biomass carbonizing furnace with asymmetric burner, includes the carbonization furnace body 2 with combustion chamber 1；The furnace bodyFeed inlet 5 is offered on 2；Top pressure closure 3 is provided on the feed inlet 5；It is provided with sealed cistern around the feed inlet 56；The furnace bottom 4 of the furnace body 2 is provided with burner 7；It is characterized in that：The burner 7 includes fuel discharge component 71, airPipeline 72, burner wall 73, igniter 74, Venturi tube 75, the fuel discharge component 71 include discharge end 711, fuelRiser 712, flame stabilization structure 713；The circular air flue 76 of the burner wall 73 extends across burner wall 73；InstituteFlame stabilization structure 713 is stated to be arranged in the first inside 734 of the side of the axis 733 of burner wall 73；The flame stabilization knotStructure 713 is arranged at the outlet end of burner wall 73 732；The Venturi tube 75 is arranged in the other side of axis 733 secondSide 735；The vacuum suction pipe 751 of the Venturi tube 75 extends to other than the outlet end 732 of burner wall 73；The air hoseRoad 72 is additionally provided with guide vane 77, and 77 one end of guide vane extends to the leading edge a754 of Venturi tube 75；The fuel riser 712 is verticalTo air flue 76 is cut across, one end extends to discharge end 711；The discharge end 711 is no more than burner wall 73Outlet end 732 (15-25) millimeter；The fuel discharging end head 711 is that tip is discharged in gaseous fuel；The flame stabilization structure713, which are provided with stablizing for multiple ventholes 7131, bores；The flame stabilization structure 713 has leading edge b7132, leading edgeB7132 is contacted with the madial wall 731 of burner wall 73；A diameter of D of the air flue 76, the flame stabilization structure 713Outlet 7133 a diameter of d, 40%D < d < 50%D；The igniter 74 is arranged in the second inside of burner wall 7335；The fitting of the Venturi tube 75 is fixed on the madial wall 731 of burner wall 73；The upstream of the guide vane 77 is provided with baffle78, the flow for controlling whole combustion air.
When work, combustion air enters through baffle 78 is suitable in air pipeline 72, and guide vane 77 divides air flue 76It is segmented into air flue a761 and air flue b762, the air flowing of air flue b762 is shallower, and air flows through air flueB762 enters the first inside 734 of burner wall 73, and the then discharge of venthole 7131 through flame stabilization structure 713 is arranged with fuelGo out the fuel being discharged in tip 711 to be mixed and burned, the amount of the opposite fuel of the material of air is few herein, is formed in the regions C fuel-richRegion is burnt, the temperature of fuel is relatively low, and extra fuel is mixed with burning inert products reduces temperature；The sky of air flue a761For gas because guide vane 77 in end 771 is increasingly closer to the inner wall 721 of air pipeline 72 so that flow velocity is accelerated, air enters Venturi tube75, vacuum is formed in the areas a 752 of Venturi tube 75, vacuum suction pipe 751 extends to the regions C, entire vacuum suction by the areas a 752It is in low-pressure state in pipe 751, the fuel and burning inert products mixed gas in the regions C are drawn into literary mound by vacuum suction pipe 751In the discharge of exhaust outlet 753 of new mixed gas flow through venturi 75 be mixed to form in pipe 75 with the air entered fired in the regions DBurn, due to fuel ratio lack ignition temperature will not height.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claimsSubject to enclosing.