CN204756903U - Living beings combustion apparatus that partly gasifies - Google Patents

Living beings combustion apparatus that partly gasifies Download PDF

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Publication number
CN204756903U
CN204756903U CN201520377469.7U CN201520377469U CN204756903U CN 204756903 U CN204756903 U CN 204756903U CN 201520377469 U CN201520377469 U CN 201520377469U CN 204756903 U CN204756903 U CN 204756903U
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China
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air
combustion chamber
vaporizer
fuel
combustion
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CN201520377469.7U
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廖卫兵
胡洪
吴小东
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Jiangxi promising new energy Polytron Technologies Inc
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Jiangxi Future New Energy Technology Co Ltd
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Abstract

The utility model discloses a living beings combustion apparatus that partly gasifies. Combustion chamber, vaporizer should be included, the cinder room was fired, and the combustor. The combustor front end is provided with the blender. The blender includes spray tube and pan feeding pipe. The spray tube includes collapsible tube, aditus laryngis suction tube and diffuser pipe. The combustor includes tuber pipe, secondary air channel, impeller and helical blade and center tube one time. The vaporizer is the toper cavity. The combustion chamber includes first barrel, cubic bellows and nozzle. The nozzle is in carrying first barrel with the tertiary air tangential. The utility model discloses being suitable for woody and herbaceous biomass fuel, and can fully burning, the particle size that uses simultaneously requires to satisfy wide screening fuel, burning back noncoking, deposition not, and showing reduces that fuel is dried, the manufacturing cost's of production effect among the moulding process.

Description

A kind of biomass semi-gasification combustion apparatus
Technical field
The utility model belongs to thermal powerplant field, particularly one with biomass powder particle or biological substance shaped granule material for fuel, and the biomass semi-gasification combustion apparatus of application half gasification, and combustion technique.
Background technology
Biomass energy has the features such as recyclability, extensively distributivity, low stain (carbon dioxide zero discharge) and total resources are huge.The biomass carbon that the earth is fixed by photosynthesis of plant every year reaches 1.8 × 10 11t, contained thermal energy reaches 3 × 10 21j, is equivalent to 10 times of the annual total energy consumption in the whole world.Equally, the various agriculture and forestry organic waste materials that China is also equivalent to 700,000,000 tons of mark coals every year are not in addition obtained utilization, and account for the Guangdong Province of the consumption nearly 50% of domestic biological particles material, the consumption in 2014 years is also only 500,000 tons.Once biomass energy obtains more large-scale application, for reduction of discharging CO 2, SO 2, NOx and minimizing haze, acid rain, dust particle be great advantage.The part that biomass energy becomes following alternative energy source is trend of the times, be improve and repair ecological environment must fill condition.
A large amount of agriculture and forestry organic waste materials, stalk fail the main cause made full use of, except being subject to selling except the factor impact of circulation, combustion technology still need improve improve and biomass fuel dry, molding procedure generation high cost, be the major influence factors of biomass energy market development.
Alkali earth metal deposition (potassium, sodium, calcium, magnesium, aluminium, silicon, iron etc.) of trace can be produced in growing process, be mainly deposited on the positions such as the shell of herbal complete stool and xylophyta, branches and leaves, bark.In the industry direct combustion biomass fuel is had problems at present and the existing common recognition of reason; In living beings, the alkaline-earth metal of trace deposition has remarkable impact to fuel ash & slag dam, direct combustion living beings will cause burner hearth coking, fouling of heating surface, aggravation heating surface wear, form the problems such as corrosion to metal wall, impact boiler operatiopn security and economy.The operating procedure of current routine is; Adopt and reduce stove combustion load, reasonable Arrangement Secondary Air position, to strengthen in stove the methods such as excess air coefficient, the effect reducing gas fume of combustion chamber temperature, alleviate burner hearth coking and fouling of heating surface can be played, but boiler load and efficiency of combustion can be had influence on thereupon.Obviously this is significant adverse to Boiler Economical Operation, and thoroughly solves the boiler operatiopn safety issue that direct combustion biomass fuel brings.
By constantly opening up new approach in Biomass Energy Utilization, will more and more show commercial application value of the present utility model.
After retrieval, inquire relevant patented technology at present as follows:
1, at the utility model patent that China applies for and announces: multi-ash biomass granular fuel combustor, application number: 200910147181.X, publication number: CN101566339A.This utility model discloses a kind of multi-ash biomass granular fuel combustor.This utility model primary structure is combustion chamber is flat microscler cavity, and cavity back upper place is the charging aperture facing to pay-off, and cavity front end is uncovered, pushes away grey motor and is moved back and forth by connecting rod, crank, hinge driven plunger in combustion chamber.Statement into question: 1. existing structure cannot regulate total blast volume and one, two, the distribution of tertiary air rate, the no realization of half gasifying combustion artistic skill of the Multi-stage rotary air distribution that this patent proposes? 2. how to accomplish returning fiery plate, the cooling protection of flat bed of material base plate? 3. bed of material lime-ash at the bottom of timing pushing-out flat, before completing tapping operation at every turn, after, primary air flow and cloth wind uniformity will be made to be interfered, how does the stability of cavity endogenous substance half gasification, and combustion ensure? 2, utility model patent China applies for and announces: biomass briquette gasification direct combustion combustor, application number: 200910018247.5, publication number: CN101660750A.This utility model summary proposes " adopting unique combustion system to make biomass fuel obtain abundant gasification, and combustion; to achieve the high energy efficiency conversion of living beings ... ", but in description and utility model content, do not set forth the mentality of designing how realizing gasification, and combustion, just mention " rotary fire grate structure makes fuel when being evenly distributed, do not stop to stir carry out sufficient gasification, and combustion ".The query proposed is the structure of slagging tap this utility model content and accompanying drawing all not demonstrating this gasification direct-combustion burner, if do not possess the function of the cleaning lime-ash that is in operation, the granule lime-ash produced during fuel combustion can only be discharged from burner nozzle.Therefore need to select larger rotary fire grate wind speed, the flue gas that burning is produced possesses enough momentum to carry grey solid impurity particle.Reach this effect, burning just needs the operating mode being in half Boiling Combustion or high temperature direct combustion to run.Draw an inference accordingly and be; This burner internal neither one oxygen amount and temperature are all applicable to the region of biomass fuel gasifying, and stating this burner operation characteristic with " direct combustion " should be more accurate.3, at the utility model patent that China applies for and announces: a kind of biomass burner, application number: 200910064444.0, publication number: CN1015104812A.Utility model content and embodiment propose " a kind of biomass burner; comprise vaporizer and combustion chamber; in vaporizer bottom ... ", " fuel is progressively carbonized after gasification, and combustion at vaporizer; the fuel after charing progressively enters combustion chamber under the promotion of flight blade; enter charing fuel and the rear fuel gas formed of vaporizer gasification of combustion chamber, after the many places air distributions such as peephole, fire door, wind distributing hole, form second-time burning ".Be 1. to this query proposed, utility model content and accompanying drawing do not demonstrate to the air supply duct in vaporizer and nozzle, the fuel in vaporizer does not obtain the primary condition (moisture content that the water vapour that gasification needs utilizes fuel to carry) that oxygen carries out biomass pyrogenation gasification.2., vaporizer inside does not embody the structure having charging and go out charcoal function, if be only rely on the helical blade outside vaporizer to promote in the horizontal direction, can only be can continue reinforced extruding again after being full of material in vaporizer, carbonized fuel just may be had to flow out, enter combustion chamber.Conclusion is the process that the fuel in vaporizer lacks that gasification of biomass is carried out in enough oxygen, heat and space, and the share of second-time burning contribution can not be very large.4, at the utility model patent that China applies for and announces: biomass semi-gasification burning normal-pressure hot-water boiler, application number: 201310691773.4 publication numbers: CN103644649A.Utility model content and embodiment propose: " a kind of biomass semi-gasification burning normal-pressure hot-water boiler; comprise combustion chamber, air-inlet cavity and water jacket; characterized by further comprising half vaporizer; half vaporizer is positioned at above combustion chamber; half vaporizer is communicated with by nozzle with combustion chamber, half vaporizer has feeding gate ... ".Utility model content and accompanying drawing do not demonstrate cleaning lime-ash aperture of door and the primary air ratio adjustment control method of half vaporizer, does not relate to the data of half gasification, and combustion aspect technology.Statement into question 1., " a kind of biomass semi-gasification burning normal-pressure hot-water boiler of the present utility model, whole use procedure can be divided into three states: fired state, running status, cleaning state ".This stove alternate run under three states is described, fuel quantity add be subject to that half vaporizer capacity is limit, deashing can only carry out when blowing out in half vaporizer, will affect boiler continuous burning and stable heating.2., bottom vaporizer be firebrick structure, the red carbon layer being deposited in bottom provides heat for fuel bed, once wind enters from spout simultaneously, the biomass fuel be under high temperature aerobic environment certainly leads to pyrolysis, and combustion gas is in vaporizer or pass through downwards in red carbon layer process will burn (by before nozzle).When primary air ratio is too high, the reaction of vaporizer combustion is just strong, and pyrolysis gas is through just approach exhaustion in red carbon-coating process.When primary air ratio is too low, the oxygen equivalent participating in pyrolytic reaction just not, causes biomass pyrolytic speed low, carbon deposit and coking in vaporizer.In actual condition, keep the stable operation of downdraft half equipment for gasification, need to follow the change of retaining amount in vaporizer and accurately regulate and control primary air ratio.Analyze by above, the device structure that this utility model provides is more difficult reaches such technical requirement.5, at the utility model patent that China applies for and announces: utility model relates to a kind of biomass semi-gasification heating system, application number: 201410097813.7 publication numbers: CN103836711A.Only briefly mention in utility model summary and beneficial effect; " novel biomass half gasification heating system organically combines biomass half-gasification oven, energy-saving cistern, chimney, economizer bank and indoor heat exchanger; in biomass half-gasification oven design, make full use of burning and anti-burning technology ... ", " 2. adopts biomass semi-gasification combustion system.Owing to there is no the link such as conveying, storage of biomass gas in gasification furnace, a large amount of tar can effectively avoiding full gasification, and combustion to produce and some pernicious gases ... " it is to be noted here; 1., utility model do not illustrate to apply which biomass semi-gasification combustion technology and burning process in the design of heating system and hot-water boiler, in hot-water boiler design, only employ burning and the anti-burning technology biomass half-gasification oven that can not illustrate that Here it is.2., about biomass pyrogenation gasification; The biological fuel gas that slow pyrolysis or fast pyrolysis process are produced will produce tar and pyrolkigneous liquid, can decompose after continuing reforming reaction.Use if directly make cooled coal gas, just need to possess the link such as cooling and purifying, conveying storage, the condensation and separating in purification process of the tar in pyrolysis combustion gas and pyrolkigneous liquid.If make 400 DEG C, pyrolysis combustion gas (being called hot dirty gas in the industry) containing dust, when tar and pyrolkigneous liquid are also in gaseous state, directly these gases of burning just avoid a difficult problem for tar and pyrolkigneous liquid.Therefore full gasification, and combustion technique can not bring the problem of tar, but burning is not removed, and the cooled coal gas of tar and pyrolkigneous liquid causes.3., the definition of half gasification, and combustion, before biomass fuel does not reach the complete pyrolytic gasification stage, just stove combustion is together sent in the combustion gas of generation and remaining fuel.And full gasification, and combustion refers to, stove combustion is sent in the combustion gas after biomass pyrogenation gasification, the cooled coal gas of purification can be used or do not purify heating gas (tar and pyrolkigneous liquid are then stayed in combustion gas in a gaseous form).
Utility model content
In view of the above problems, the purpose of this utility model is that providing a kind of is suitable for woody and herbaceous biomass fuel, and can Thorough combustion, the granularity simultaneously used requires to meet wide-size distribution fuel, noncoking, not dust stratification after burning, and the biomass semi-gasification combustion apparatus significantly reducing the manufacturing cost produced in fuel oven dry, molding procedure.
For achieving the above object, a kind of biomass semi-gasification combustion apparatus that the utility model provides, wherein, this equipment comprises combustion chamber, is provided with the vaporizer of combustion chamber on top, combustion chamber, is provided with the burning chamber with combustion chamber in bottom, combustion chamber, and on vaporizer, be provided with the burner be communicated with vaporizer.Burner front end is provided with blender.Blender comprises the jet pipe sending into air and the feeding pipe being provided with feeding biomass powder particle or biological substance shaped granule material on jet pipe.The air inlet of jet pipe and the cross section pantograph ratio of air outlet are 1:2, and after fuel mix, flow velocity is 20m/s.Jet pipe comprise send into air collapsible tube, to be connected with collapsible tube and to form the aditus laryngis suction tube of negative-pressure ward mixed material, and the diffuser pipe be connected with aditus laryngis suction tube.Burner comprises primary air piping that two ends are communicated with vaporizer with diffuser pipe respectively, on primary air piping, be provided with the secondary air channel be communicated with vaporizer with primary air piping, the impeller be provided with at the exit zone of primary air piping and secondary air channel and helical blade, and in primary air piping, be provided with the central tube extended to outside primary air piping, above-mentioned impeller and helical blade are referred to as combined type swirl vanes, in impeller, outside all hides coefficient 1.2 by the angle of climb 55 ° design helical blade, helical blade, and impeller material selects resistant and wear-resistant cast steel.What send into primary air piping after diffuser pipe mixing is the mixture of fuel and air.Secondary air channel is provided with the air-supply mouth of pipe sending into combustion air.Vaporizer is cone-shaped cavity, is communicated with primary air piping and secondary air channel, and combustion chamber.Combustion chambers burn room comprises the first cylindrical shell be communicated with vaporizer, the tertiary air case be provided with outside the first cylindrical shell, and is provided with many communicating pipes and nozzle between tertiary air case and the first cylindrical shell.Nozzle is tangentially transported in the first cylindrical shell by tertiary air.Said nozzle is also provided with air quantity controllable register.In addition, tertiary air tank inlet section is also provided with draft gauge.Temperature in combustion chamber is 900-950 DEG C.Thus, fuel mainly adopts biomass powder particle or the biological substance shaped granule material of woody and draft, and fuel belongs to regenerative resource and clean energy resource kind of fuel.Blender adopts Rafael nozzle structure, and fuel pump orifice is arranged on jet pipe negative pressuren zone, and fuel mix the abundant wind powder mixture formed afterwards by pipeline airvey system to burner nozzle with air, enter vaporizer.Gasifying agent required for the reaction of vaporizer endogenous substance pyrolytic gasification is provided and delivered according to stoichiometric ratio.Above-mentioned gasifying agent is primarily of water vapour and oxygen composition.Come from moisture content that fuel itself carries and the oxygen that combustion air contains.Make fuel catch fire and combustion process delayed, is formed one heat up gasification, volatilization precipitation transition stage.During operation, tertiary air burning needed is delayed to be sent in combustion chamber, the combustion air that the mixture of the fuel that primary air piping passes into and air and secondary air channel pass into flows through the inner side and outer side of impeller respectively, produce the air flow structure of high swirl strength, near burner nozzle, form stable smoke backflow district and ignition.The three groups of tangential high speed tertiary air air-flows tangentially being entered combustion chamber by nozzle make flue gas and fuel particle maintenance along the track of combustion chamber barrel spiral flow forward, and flue gas stroke can be made to be increased to more than 5 meters.In addition, tertiary air classification and multiple nozzle carry out multiple spot conveying wind-force, realize the air distribution mode that multiple spot classification is mixed into tertiary air, to reach the effect of flue-gas temperature in balanced regulation and control combustion chamber, and the flue-gas temperature in burning chamber exit is controlled at 900-950 DEG C, the controling parameters of combustion chamber and burning chamber's flue-gas temperature is 900 DEG C.Under the operating mode of the pure xylophyta of burning, it is 950 DEG C that flue-gas temperature controls.Flue-gas temperature ≈ 550 DEG C in vaporizer section; Excess air coefficient α=1.4-1.5 in combustion chamber, tertiary-air velocity 35-45m/s, flue gas flow rate 7-9m/s axial in combustion chamber.
In some embodiments, the body sectional area of aditus laryngis suction tube and the body sectional area of collapsible tube are 1:2.
In some embodiments, the wind speed before collapsible tube advancing air is 14m/s-16m/s, and the wind speed of aditus laryngis suction tube is 28m/s-32m/s.
In some embodiments, outside the first cylindrical shell, be provided with 3 tertiary air casees, totally 27, the communicating pipe between described tertiary air case and the first cylindrical shell and nozzle.
In some embodiments, the wind rate 30% of primary air piping; The wind rate 35% of described secondary air channel; The wind rate 35% of described nozzle.The wind speed 30m/s of primary air piping, the wind speed 35m/s of secondary air channel, the wind speed 35-45m/s of nozzle.
In some embodiments, the aperture of door of fuel is added time startup stage that the first cylindrical shell of combustion chamber being provided with.
In some embodiments, burning chamber comprises the second cylindrical shell be communicated with burner hearth with combustion chamber respectively, and the deashing access door be provided with on the second cylindrical shell and measured hole.
In some embodiments, the flue-gas temperature at the second cartridge outlet place is 900-950 DEG C.Thus, when flowing through burning chamber from the combustion chamber discharge flue gas rotated forward, under inertia force effect, the part soot dust granule in flue gas is isolated.
The beneficial effects of the utility model are applicable woody and herbaceous biomass fuel, and can Thorough combustion, the granularity requirement simultaneously used can meet wide-size distribution fuel, noncoking, not dust stratification after burning, and significantly reduces the effect of the manufacturing cost produced in fuel oven dry, molding procedure.Specific as follows:
One, in existing biomass fuel equipment use process, for containing the fuel of higher moisture content, need oven dry pretreatment be carried out, Thorough combustion in combustion chamber could be realized.The equipment that the utility model is created relaxes the technical requirement such as moisture, granularity to using biomass fuel; Not only can the fuel saving manufacturing cost 15% of drying, producing in molding procedure, the fuel scope of application expands to woody fuel and draft fuel (straw fuel) simultaneously, also the scope of application to biomass fuel kind is relaxed, and when substantially can eliminate biomass fuel combustion, the problem of ubiquitous furnace heating surface coking and convection heating surface dust stratification.
They are two years old, blender is with reference to Rafael nozzle structural design, mixer entrance air velocity duct selects 14m/s-16m/s by specification recommends, import air channel caliber DN200, jet pipe is into and out of the pantograph ratio=1:2 in cross section, aditus laryngis section one's intention as revealed in what one says speed is brought up to 28m/s-32m/s, and jet pipe aditus laryngis section (negative pressuren zone) is provided with fuel pump orifice, collapsible tube, diffuser pipe.The wind powder mixture that fuel and air fully mix rear formation enters into the burner of spiral-flow type through primary air piping.Under the operating mode of Geldart-D particle crushed material or shaped granule material, can not there is accumulated powder, plugging phenomenon in wind powder mixing duct flow velocity 20m/s.
They are three years old, the Impeller Design that primary and secondary air produces eddy flow energy is fabricated structure, impeller inner side and outer side is all furnished with helical blade, the angle of climb of blade, by covering coefficient=1.2 of 55 ° of designs, blade, so configures and makes the air flow structure of primary and secondary air near burner nozzle possess enough swirl strengths and resistant-walled recirculating zone.
They are four years old, the object arranging vaporizer is the reducing atmosphere as far as possible maintained in vaporizer section, make that the ignition time of fuel and combustion process delay, combustion reaction intensity reduces, fuel forms the transition stage of heat up gasification, a Volatile under such conditions.Under the prerequisite reaching the burning of First air stable ignition, the flue-gas temperature in vaporizer section is controlled as far as possible in ≈ 550 DEG C of scopes.For obtaining better fuel gasification effect, also adjustable wind rate and wind speed if desired, postpones the measure of catching fire, being passed after stove combustion zone.
Five, be evenly arranged tertiary air case in cylindrical shell periphery, combustion chamber first, draw totally 27 tertiary air nozzles tangentially entering the first cylindrical shell by tertiary air case, the tertiary-air velocity selected, up to 35-45m/s, possesses enough momentum and form swirling eddy in combustion chamber.Although flue gas axial flow velocity 7-9m/s in combustion chamber, flue gas and fuel particle under the injection of tertiary air near the barrel of combustion chamber, according to spiral trajectory flow forward.Flue gas takes two turns in combustion chamber and burning chamber's inward turning, and flame traveled distance is about 5 meters, and require that entering burner hearth flame stroke meets or exceeds one meter again, fuel burn-out degree just can be protected.The mode that this design employing 1.4 excess air coefficient and the classification of tertiary air multiple spot are mixed into, object is balanced and the flue-gas temperature in regulation and control Nei Ge region, combustion chamber, and burning chamber's exit gas temperature is controlled below the ash fusion point of biomass fuel.When occurring that the characteristic of char residue of short time overload operation operating mode or fuel is poor, tertiary air rate can also be increased if desired, excess air coefficient is adjusted to about 1.5.
In sum, the blender of application adopts Rafael nozzle structure, and the means of the structural design of tertiary air multiple spot classification and interpolation gasifying agent, ensure that applicable woody and herbaceous biomass fuel, and can Thorough combustion, the granularity simultaneously used requires to meet wide-size distribution fuel, noncoking, not dust stratification after burning, and the feature significantly reducing manufacturing cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of burner;
Fig. 3 is the structural representation of combustion chamber.
Detailed description of the invention
Below in conjunction with accompanying drawing, utility model is described in further detail.
As Figure 1-3, a kind of biomass semi-gasification combustion apparatus, comprise combustion chamber 04, be provided with on top, combustion chamber 04 be communicated with combustion chamber 04 vaporizer 03, be provided with the burning chamber 05 be communicated with combustion chamber 04 in bottom, combustion chamber 04, and on vaporizer 03, be provided with the burner 02 be communicated with vaporizer 03.Burner 02 front end is provided with blender 01.The main body of a whole set of burner adopts level or vertical arranged in form.Blender 01 comprises the jet pipe sending into air and the feeding pipe 14 being provided with feeding biomass powder particle or biological substance shaped granule material on jet pipe, and this jet pipe is with reference to Rafael nozzle structural design, import air channel caliber DN200, inlet velocity 14m/s-16m/s.The air inlet A of jet pipe and the cross section pantograph ratio of air outlet B are 1:2, and after fuel mix, flow velocity is 20m/s.Jet pipe comprises the aditus laryngis suction tube 11 of the collapsible tube 12 sending into air, the negative-pressure ward material be connected with collapsible tube 12, and at the diffuser pipe 13 be connected with aditus laryngis suction tube 11.Burner 02 comprises primary air piping 24 that two ends are communicated with vaporizer 03 with diffuser pipe 13 respectively, on primary air piping 24, be provided with the secondary air channel 25 be communicated with vaporizer 03 with primary air piping 24, the impeller 21 be provided with at the exit zone of primary air piping 24 and secondary air channel 25 and helical blade 22,, and in primary air piping 24, be provided with the central tube extended to outside primary air piping 24.Above-mentioned impeller 21 and helical blade 22 are referred to as combined type swirl vanes, and in impeller 21, outside all hides coefficient 1.2, impeller 21 material selection resistant and wear-resistant cast steel by the angle of climb 55 ° design helical blade 22, helical blade 22.The mixture of what diffuser pipe 13 mixed rear feeding primary air piping 24 is fuel and air.Secondary air channel 25 is provided with the air-supply mouth of pipe sending into combustion air.Vaporizer 03 is cone-shaped cavity 31, is communicated with primary air piping 24 and secondary air channel 25, and combustion chamber 04.Combustion chamber 04 comprises the first cylindrical shell 41 that vaporizer 03 is communicated with, the tertiary air case 42 be provided with outside the first cylindrical shell 41, and many communicating pipes and nozzle 43 is provided with between tertiary air case 42 and the first cylindrical shell 41, nozzle 43 is tangentially transported to by tertiary air in the first cylindrical shell 41; Said nozzle 43 is also provided with air quantity controllable register; In addition, tertiary air case 42 entrance is also provided with draft gauge.Temperature in combustion chamber 04 is 900-950 DEG C.
Fuel mainly adopts biomass powder particle or the biological substance shaped granule material of woody and draft, and fuel belongs to regenerative resource and clean energy resource kind of fuel.Blender 01 adopts Rafael nozzle structure, and fuel pump orifice is arranged on jet pipe negative pressuren zone, and fuel mixes the wind powder mixture that formed fully by pipeline airvey system to burner 02 spout with air, enter vaporizer 03.Gasifying agent required for the reaction of vaporizer 03 endogenous substance pyrolytic gasification is provided and delivered according to stoichiometric ratio.Above-mentioned gasifying agent is primarily of water vapour and oxygen composition.Come from moisture content that fuel itself carries and combustion air contains oxygen.Make fuel catch fire and combustion process delayed, is formed one heat up gasification, volatilization precipitation transition stage.During operation, tertiary air burning needed is delayed to be sent in combustion chamber 04, the combustion air that the mixture of the fuel that primary air piping 24 passes into and air and secondary air channel 25 pass into flows through the inner side and outer side of impeller respectively, produce the air flow structure of high swirl strength, near burner nozzle, form stable smoke backflow district and ignition.The three groups of tangential high speed tertiary air air-flows tangentially being entered combustion chamber 04 by nozzle make flue gas and fuel particle maintenance along the track of combustion chamber barrel spiral flow forward, and flue gas stroke can be made to be increased to more than 5 meters.In addition, tertiary air classification and multiple nozzle 43 carry out multiple spot conveying wind-force, realize the air distribution mode that multiple spot classification is mixed into tertiary air, to reach the effect of flue-gas temperature in balanced regulation and control combustion chamber 04, and the flue-gas temperature in burning chamber 05 exit is controlled at 900-950 DEG C, the controling parameters of combustion chamber 04 and burning chamber 05 flue-gas temperature is 900 DEG C.Under the operating mode of the pure xylophyta of burning, it is 950 DEG C that flue-gas temperature controls.Flue-gas temperature ≈ 550 DEG C in vaporizer 03 section; Excess air coefficient α=1.4-1.5 in combustion chamber 04, tertiary-air velocity 35-45m/s, flue gas flow rate 7-9m/s axial in combustion chamber 04.In addition, combustion chamber 0404 is the main burning block of fuel, and the flue-gas temperature in section will produce fluctuation along with the operating condition of system, and the operating procedure carrying out regulable control flue-gas temperature must take into account ash fusion point and the characteristic of char residue of fuel.
The body sectional area of aditus laryngis suction tube 11 and the body sectional area of collapsible tube 12 are 1:2.The wind speed of collapsible tube 12 advancing air is 14m/s-16m/s, and the wind speed of aditus laryngis suction tube 11 is 28m/s-32m/s.3 tertiary air casees 42 are provided with, the communicating pipe between described tertiary air case 42 and the first cylindrical shell 41 and totally 27, nozzle 43 outside first cylindrical shell 41.The wind rate 30% of primary air piping 24, the wind rate 35% of secondary air channel 25, the wind rate 35-45% of nozzle 43.The wind speed 30m/s of primary air piping 24, the wind speed 35m/s of secondary air channel 25, the wind speed 35-45m/s of nozzle 43.The aperture of door 44 of fuel is added time startup stage that first cylindrical shell 41 of combustion chamber 04 being provided with.Burning chamber 05 comprises the second cylindrical shell 51 be communicated with burner hearth with combustion chamber 04 respectively, and the deashing access door 52 be provided with on the second cylindrical shell 51 and measured hole.The flue-gas temperature in the second cylindrical shell 51 exit is 900-950 DEG C, when flowing through burning chamber 05 from the combustion chamber 04 discharge flue gas rotated forward, isolates the part soot dust granule in flue gas under centrifugal action.In burning chamber 05, side wall is provided with deashing access door 51, can clear up the lime-ash stockpiled when equipment is stopped transport.
Above-described is only embodiments more of the present utility model.For the person of ordinary skill of the art, under the prerequisite not departing from the utility model creation design, can also make some distortion and improvement, these all belong to the protection domain of utility model.

Claims (8)

1. a biomass semi-gasification combustion apparatus, it is characterized in that, this equipment comprises combustion chamber, is provided with the vaporizer of combustion chamber on top, combustion chamber, is provided with the burning chamber with combustion chamber in bottom, combustion chamber, and on vaporizer, be provided with the burner be communicated with vaporizer;
Described burner front end is provided with blender;
Described blender comprises the jet pipe sending into air and the feeding pipe being provided with feeding biomass powder particle or biological substance shaped granule material on jet pipe; The air inlet of described jet pipe and the cross section pantograph ratio of air outlet are 1:2;
Described jet pipe comprise send into air collapsible tube, to be connected with collapsible tube and to form the aditus laryngis suction tube of negative-pressure ward mixed material, and the diffuser pipe be connected with aditus laryngis suction tube;
Described burner comprises primary air piping that two ends are communicated with vaporizer with diffuser pipe respectively, on primary air piping, be provided with the secondary air channel be communicated with vaporizer with primary air piping, the impeller be provided with at the exit zone of primary air piping and secondary air channel and helical blade, and in primary air piping, be provided with the central tube extended to outside primary air piping;
What send into primary air piping after the mixing of described diffuser pipe is the mixture of fuel and air;
Described secondary air channel is provided with the air-supply mouth of pipe sending into combustion air;
Described vaporizer is cone-shaped cavity, is communicated with primary air piping and secondary air channel, and combustion chamber;
Described combustion chamber comprises the first cylindrical shell be communicated with vaporizer, the tertiary air case be provided with outside the first cylindrical shell, and is provided with many communicating pipes and nozzle between tertiary air case and the first cylindrical shell;
Described nozzle is tangentially transported to by tertiary air in the first cylindrical shell;
Temperature in described combustion chamber is 900-950 DEG C.
2. a kind of biomass semi-gasification combustion apparatus according to claim 1, is characterized in that, the body sectional area of described aditus laryngis suction tube and the body sectional area of collapsible tube are 1:2.
3. a kind of biomass semi-gasification combustion apparatus according to claim 1 and 2, it is characterized in that, the wind speed before described collapsible tube is 14m/s-16m/s; The wind speed of described aditus laryngis suction tube is 28m/s-32m/s.
4. a kind of biomass semi-gasification combustion apparatus according to claim 1, is characterized in that, is provided with 3 tertiary air casees outside the first described cylindrical shell, totally 27, the communicating pipe between described tertiary air case and the first cylindrical shell and nozzle.
5. a kind of biomass semi-gasification combustion apparatus according to claim 1, is characterized in that, the wind rate 30% of described primary air piping; The wind rate 35% of described secondary air channel; The wind rate 35% of described nozzle;
The wind speed 30m/s of described primary air piping; The wind speed 35m/s of described secondary air channel; The wind speed 35-45m/s of described nozzle.
6. a kind of biomass semi-gasification combustion apparatus according to claim 1, is characterized in that, adds the aperture of door of fuel time startup stage that the first cylindrical shell of described combustion chamber being provided with.
7. a kind of biomass semi-gasification combustion apparatus according to claim 1, is characterized in that, described burning chamber comprises the second cylindrical shell be communicated with burner hearth with combustion chamber respectively, and the deashing access door be provided with on the second cylindrical shell and measured hole.
8. a kind of biomass semi-gasification combustion apparatus according to claim 7, is characterized in that, the flue-gas temperature at the second described cartridge outlet place is 900-950 DEG C.
CN201520377469.7U 2015-06-03 2015-06-03 Living beings combustion apparatus that partly gasifies Expired - Fee Related CN204756903U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104879746A (en) * 2015-06-03 2015-09-02 江西前程新能源科技有限公司 Biomass semi-gasification combustion equipment
CN110396430A (en) * 2019-08-19 2019-11-01 广州汇迪新能源科技有限公司 A kind of three material bed Multifunction biological mass gasifying furnaces
CN111720815A (en) * 2020-01-17 2020-09-29 太仓新瑞节能设备有限公司 Integrated biomass gasification low-nitrogen and oxygen-poor combustion boiler
CN112325293A (en) * 2020-11-02 2021-02-05 江西理工大学 Biomass combustion water tar gasification device with internal heat exchange structure
CN114045181A (en) * 2021-10-28 2022-02-15 西安热工研究院有限公司 Cyclone type biomass semi-gasification experimental device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104879746A (en) * 2015-06-03 2015-09-02 江西前程新能源科技有限公司 Biomass semi-gasification combustion equipment
CN110396430A (en) * 2019-08-19 2019-11-01 广州汇迪新能源科技有限公司 A kind of three material bed Multifunction biological mass gasifying furnaces
CN111720815A (en) * 2020-01-17 2020-09-29 太仓新瑞节能设备有限公司 Integrated biomass gasification low-nitrogen and oxygen-poor combustion boiler
CN112325293A (en) * 2020-11-02 2021-02-05 江西理工大学 Biomass combustion water tar gasification device with internal heat exchange structure
CN114045181A (en) * 2021-10-28 2022-02-15 西安热工研究院有限公司 Cyclone type biomass semi-gasification experimental device

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