CN102876384A

CN102876384A - Biomass fuel vaporizing furnace

Info

Publication number: CN102876384A
Application number: CN2011101928911A
Authority: CN
Inventors: 黄多能
Original assignee: CHANGSHU XINZHUANG TOWN QIANJIN HARDWARE PLANT
Current assignee: CHANGSHU XINZHUANG TOWN QIANJIN HARDWARE PLANT
Priority date: 2011-07-11
Filing date: 2011-07-11
Publication date: 2013-01-16

Abstract

A biomass fuel vaporizing furnace belongs to the technical field of stoves and comprises a vaporizing furnace body having a hearth and a fire grate at the bottom of the hearth. The invention is characterized in that a water sealed dust collection tank is arranged on the lower portion of the vaporizing furnace body below the fire grate. The water sealed dust collection tank communicates with the bottom of the hearth. The invention has the following advantage: as the water sealed dust collection tank is arranged on the lower portion of the vaporizing furnace body below the fire grate, if there is a fire, the fire is sealed by water in the water sealed dust collection tank so as to isolate the fire from the vaporizing furnace body and put an end to safety hidden trouble.

Description

Biological fuel gasification furnace

Technical field

The invention belongs to the stove and accessory technical field, be specifically related to a kind of biological fuel gasification furnace

Background technology

Known situation is: the non-renewable resources such as coal, oil and natural gas improve constantly because of the price that causes increasingly in short supply on the one hand, and the mankind are increasingly sharpened because temporary plan without desirable reply causes the nervous psychology and the sense of crisis that rely on natural resource; A large amount of biomass energies utilized is by serious waste on the other hand.Here the available biomass energy of saying main but be not limited to such as rice chaff, straw, wheat straw, maize straw, soybean stalk, jowar stalk and wood chip etc.Especially in the rural area, people see the phenomenon of peasant's crop straw burning every now and then, not only undermine environment, and the waste resource.Although government and agricultural experts endeavour to advocate the peasant with straw-returning, produce little effect.

Not accommodating doubting, the peasant in rural area always has the tradition virtue that Frugality and industry is born hardships, and the real caving-in bash of doing something against one's will that belongs to of why fuel wood being committed to the flames, reason roughly has four: one, and the fuel value of farmers''s biofuel is low, using this fuel can prolong undoubtedly cooks the meal time, and fuel consumption is superfluous, and deficiency thinks that cooking meal consumes; The 2nd, lack rational stove and accessory; The 3rd, be difficult to directly act as a fuel as industry and commerce; The 4th, the collection transportation cost is large and price is meagre.

Although the energy exploitation and application of water energy, wind energy and sun power and so on can play the effect of protection natural resource, because being subjected to the restriction in geographical position, this energy only can prove effective in limited area.

In four reasons mentioning in the above; suitable stove and accessory is the important factor that solves the biomass energy outlet; because; if there be a kind of biomass fuel can being converted into to be suitable for industry and the commercial energy that uses; so undoubtedly can play and both save and protected non-renewable resource, can be the effect that this double gain falls in industry and commerce for increasing peasant income again.

Biological fuel gasification furnace can generate the CO(carbon monoxide afterwards with biomass fuel such as straw drying, cracking (pyrolysis), oxidation and reduction) the device use of gas supply such as boiler.Such device can be seen in Chinese patent literature, typical as biological gasification furnace that Chinese invention patent publication number CN101531925A recommends (by the application of contriver's proposition of the applicant), this patent application scheme has the alleged technique effect of Instructions Page 2 the 20th to 22 row, but there is potential safety hazard, because in case tempering phenomenon in use occurs, cause so easily the vapourizing furnace Explosion of boiler proper, cause major accident.

In view of above-mentioned prior art, the applicant's contriver has done to reach the arduous exploration more than 2 years, has finally found result of the above problems, and technical scheme described below produces under this background

Summary of the invention

In case task of the present invention is to provide a kind of being of value to ensure safety and use the biological fuel gasification furnace that causes major accident when avoiding tempering occurring.

Task of the present invention is finished like this, a kind of biological fuel gasification furnace, comprise the vapourizing furnace body of heater that has burner hearth and have fire grate in the bottom of burner hearth, characteristics are to be equipped with a water seal collection ashpit in the bottom of vapourizing furnace body of heater and below corresponding to described fire grate, and this water seal collection ashpit communicates with the bottom of described burner hearth.

Technical scheme provided by the invention is because in the bottom of vapourizing furnace body of heater and be provided with water seal collection ashpit below corresponding to fire grate, when therefore in a single day occurring with fire, then stifled by the water seal in the water seal collection ashpit, the intensity of a fire and vapourizing furnace body of heater is isolated, stop potential safety hazard.

Description of drawings

Fig. 1 is the embodiments of the invention structure iron.

Fig. 2 is the sectional view of Fig. 1.

Embodiment

For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present invention and beneficial effect more, the applicant general elaborates in the mode of embodiment below, but all be not restriction to the present invention program to the description of embodiment, any according to the present invention's design done only for pro forma but not substantial equivalent transformation all should be considered as technical scheme category of the present invention.

Ask for an interview Fig. 1 and Fig. 2; before entering the description of the drawings; the applicant does following clarification explanation: every to relate to left and right, upper and lower, front and rear etc. directionality concept all be with location status at present illustrated in figures 1 and 2, therefore can not limit with the variation of position the protection domain of technical scheme of the present invention.

Provide geometrical shape and be having a burner hearth 11 and being shelved with the vapourizing furnace body of heater 1 of fire grate 13 in the bottom of burner hearth 11 of cylinder, maintain cavity between the outer wall of the inwall of this vapourizing furnace body of heater 1 and burner hearth 11, constitute outlet chamber 12 by this cavity, the CO (carbon monoxide converter) gas (CO) that generates in the burner hearth 11 enters outlet chamber 12.Burner hearth 11 from upper and on the space be followed successively by for the drying zone 111 of biomass fuel drying, with the cracking zone 112 of drying zone 111 dried biomass fuel cracking, play the oxidation zone 113 of the biomass fuel oxidation after the cracking and play the carbonic acid gas (CO that generates by oxidation zone 113 oxidations ₂ ) be reduced into the reduction zone (Fig. 2 shows) of CO.Wherein: be shrunk to not only than the internal diameter of cracking zone 112 but also the structure less than the internal diameter of reduction zone 114 to the internal diameter of burner hearth 11 and corresponding to the position of oxidation zone 113, the internal diameter formation upper and lower that is to say whole burner hearth 11 is large, and the little structure in lower middle side, the internal diameter that is oxidation zone 113 places is little, so structure can be guaranteed the temperature of oxidation zone 113 place's temperature and reduction zone 114 and clearly demarcated with the temperature limit of cracking zone 112, the temperature that namely ensures the zone of oxidation zone 113 reaches about 1200 ℃, and concrete reason can be referring to the explanation of applicant in the background technology hurdle.

Preferably, at the outer wall of aforementioned burner hearth 11 thermal insulation layer 115 is set, because the setting up of thermal insulation layer 115, therefore, aforesaid outlet chamber 12 is formed between the inwall of the outer wall of thermal insulation layer 115 and vapourizing furnace body of heater 1.

Shown in figure, the top board 15 that at the top of vapourizing furnace body of heater 1 is vapourizing furnace body of heater 1 is equipped with a feeding mechanism 7 that is used for to aforesaid burner hearth 11 interior feeding biomass fuels, preferably but not the feeding mechanism 7 that definitely is limited to comprises feeding motor 71, the 3rd, the 4th, the 5th power wheel 72,73,74, lift tank 75, be positioned at the elevator chain 76 of lift tank 75, stir hopper 77 and second, the 3rd transmission belt 78,79, feeding motor 71 is fixed on the aforesaid top board 15, the 3rd power wheel 72 is fixed on the spindle nose of feeding motor axle of feeding motor 71, the 4th power wheel 73 is arranged on the upper end of lift tank 75 rotationally, the 5th power wheel 74 is arranged on the lift tank 75 and rotationally corresponding to the top of the 4th power wheel 73, one end of the second transmission belt 78 is nested with on the 3rd power wheel 72, the other end is nested with on the 4th power wheel 73, one end of the 3rd transmission belt 79 is nested with on the 4th power wheel 73, the other end is nested with on the 5th power wheel 74, wherein: the 3rd, the the 4th and the 5th power wheel 72,73,74 are sprocket wheel, and the 4th power wheel 73 is duplex chain wheel, second, the 3rd transmission belt 78,79 are driving chain.Feeding interface 151 on the upper end of lift tank 75 and the top board 15 connects, feeding interface 151 communicates with burner hearth 11, the lower end of lift tank 75 is supported on the terrace and has a bucket 751, stirring hopper 77 is fixed on the elevator chain 76 with the interval state, and an end of elevator chain 76 is nested with on the transmission shaft 741 of the 5th power wheel 74 (transmission shaft 741 is furnished with the driving chain wheel that is nested with for elevator chain 76), and the other end is nested with at pivot and is arranged on the lifting chain rivet 761 of bottom of lift tank 75 (this liftings chain rivet 761 is provided with the driving chain wheel that confession elevator chain 76 is nested with).

Under the work of feeding motor 71, drive the elevator chain 76 that is connected with the transmission shaft 741 of the 5th power wheel 74 through the 3rd power wheel 72, the second transmission belt 78, the 4th power wheel 73, the 3rd transmission belt 79 and the 5th power wheel 74 successively by feeding motor 71 and move, will be fed into bucket 751 interior biomass fuels and be transported in the burner hearth 11 by stirring hopper 77.

On the top of burner hearth 11 the pagoda effect appears for fear of the biomass fuel that is fed into by feeding mechanism 7 in the burner hearth 11, therefore be equipped with one at top board 15 and draw together material mechanism 8, when feeding mechanism 7 feeding, make biomass fuel in burner hearth 11 interior tilings by the work of drawing together material mechanism 8.

Preferred but not the material mechanism 8 of drawing together that be limited to comprises and draws together material motor 81, draw together material step-down gear 82, the 6th, the 7th power wheel 83,84, the 4th transmission belt 85 and material enlarging board 86, draw together material motor 81 and draw together 82 transmissions of material step-down gear and connect, and expect that together with drawing together motor 81 is fixed on the edge of top board 15 by drawing together material step-down gear 82, the 6th power wheel 83 is fixed on the final stage power output shaft of drawing together material step-down gear 82, material enlarging board 86 is fixed on the lower end of the material enlarging board axle 861 that is positioned at burner hearth 11, and 861 transmissions of material enlarging board axle be bearing in the central authorities of top board 15, and the upper end of material enlarging board axle 861 leans out top board 15, the 7th power wheel 84 is fixed on the end that material scraping plate axle 861 leans out top board 15, one end of the 4th transmission belt 85 is nested with on the 6th power wheel 83, and the other end is nested with on the 7th power wheel 84.Wherein: the 6th and the 7th power wheel 83,84 is sprocket wheel, and the 4th transmission belt 85 is driving chain.

At feeding mechanism 7 with when biomass fuel is in feeding interface 151 is introduced burner hearths 11 or after feeding is complete, start and draw together material mechanism 8, make the biomass material floating (striking off) that enters in the burner hearth 11, avoid biomass material at burner hearth 11 interior formation Pagoda-shaped states.By illustrated in figures 1 and 2, on top board 15, also is furnished with the observation door 152 that has ignition action concurrently.

Continue to see Fig. 1 and Fig. 2, the bottom of aforesaid burner hearth 11 be aforesaid reduction zone 114 below be shelved with discoidal fire grate 13 by the frame 131 of deciding that fixes with vapourizing furnace body of heater 1, and have additional water seal collection ashpit 14 below vapourizing furnace body of heater 1, water seal collection ashpit 14 extends to the below that corresponds to fire grate 13 and communicates with burner hearth 11.The CO (carbon monoxide converter) gas that comes from burner hearth 11 enters aforesaid outlet chamber 12 behind water seal collection ashpit 14.Under the use state, the 14 interior fillings of water seal collection ashpit have water, the CO (carbon monoxide converter) gas that 114 reduction form through the reduction zone in the burner hearth 11 is under the effect of follow-up bleed mechanism 3, be fire grate ash discharge gap with negative pressure state through the conduit 132(of fire grate 13) enter water seal collection ashpit 14, and then overflow in the water from water seal collection ashpit 14 and enter outlet chamber 12.So, in use, in case because of unexpected tempering phenomenon occurs, then can not cause damage and even the blast of vapourizing furnace body of heater 1.

Enter water seal collection ashpit 14 in order to ensure that fire grate 13 is successfully drawn ashes, therefore the present invention program is provided with fire grate driving mechanism 9, preferably but not the fire grate driving mechanism 9 that definitely is limited to comprises the second motor 91, the 8th, the 9th power wheel 92, the 93, the 5th transmission belt 94, step-down gear 95, first, second gear 96,97 and fire grate transmission shaft 98, the second motor 91 and step-down gear 95 are arranged at and use on the on-the-spot terrace, are covered by the body of heater cavity volume of the bottom of vapourizing furnace body of heater 1 and protect and corresponding to the below of the water seal collection ashpit base plate 141 of water seal collection ashpit 14.The 8th power wheel 92 is fixed on the motor shaft head of the second motor 91, the 9th power wheel 93 is fixed on the step-down gear power input shaft 951 of step-down gear 95, one end of the 5th transmission belt 94 is nested with on the 8th power wheel 92, the other end is nested with on the 9th power wheel 93, the first gear 96 is fixed on the gear shaft 961, gear shaft 961 is arranged on the aforesaid water seal collection ashpit base plate 141 rotationally, and be connected with the braking maneuver power output shaft 952 of step-down gear 95, the second gear 97 is fixed on the fire grate transmission shaft 98, and with 96 engagements of the first gear, the central authorities of the upper end of fire grate transmission shaft 98 and fire grate 13 are fixed, and the lower end is bearing on the water seal collection ashpit base plate 141 rotationally by axle bed 981.As seen, the second motor 91, the 8th, the 9th power wheel 92, the 93, the 5th transmission belt 94 and step-down gear 95 are positioned at the outer bottom of water seal collection ashpit 14, and the first gear 96 and the second gear 97 and fire grate transmission shaft 98 are positioned at water seal collection ashpit 14.

When 91 work of the second motor, drive the 9th power wheel 93 by the 6th power wheel 92 on the motor shaft head that is fixed on the second motor 91 through the 5th transmission belt 94, because the 9th power wheel 93 is fixed on the step-down gear power input shaft 951 of step-down gear 95, therefore after step-down gear 95 slows down, drive the first gear 96 by braking maneuver power output shaft 952 outputting powers (low speed), because first, the second gear 96,97 are engaged with each other, drive the second gear 97 by the first gear 96 thus, because the second gear 97 is fixed on the fire grate transmission shaft 98, again because fire grate transmission shaft 98 is fixing with fire grate 13, therefore drive fire grate 13 by fire grate transmission shaft 98 and slightly rotate, ashes are shaken off in the water seal collection ashpit 14 that fills water.Because the part of water seal collection ashpit 14 is stretched over outside the vapourizing furnace body of heater 1, therefore, the ashes that enter in the water seal collection ashpit 14 can utilize instrument to skim by manual, and this kind ashes can be supplied with the Chemicals production unit as the additive of the series products of making rubber, carbon black.

CO (carbon monoxide converter) gas in the aforesaid outlet chamber 12 is drawn by the upper lateral part that is connected to vapourizing furnace body of heater 1 and escape pipe 2 that communicate with outlet chamber 12, in spill process, be connected in series in bleed mechanism 3 work on the pipeline of escape pipe 2, the CO (carbon monoxide converter) gas in the outlet chamber 12 are drawn with negative pressure mode.Why the applicant is decided to be downdraft biomass fuel instituteization stove with the subject name of the present patent application, is to enter the water seal collection ashpit 14 rear outlet chambers 12 that just enter because the CO (carbon monoxide converter) gas in the outlet chamber 12 are bottoms from burner hearth 11.

Have additional an aerosol washing mechanism 5 on the pipeline of aforesaid escape pipe 2 and between aforesaid bleed mechanism 3, be used for purifying CO (carbon monoxide converter) gas.Preferred aerosol washing mechanism 5 comprises aerosol washing tank 51, transition conduit 52, aerosol washing tank water inlet pipe 53 and the first ventpipe 54, the middle part of transition conduit 52 is positioned at the aerosol washing tank tank chamber 55 of aerosol washing tank 51, offer a pair of transition conduit prosopyle 521 that corresponds to each other in this transition conduit 52, that is to say in the aspectant position of the tube wall of transition conduit 52 and respectively offer a transition conduit prosopyle 521, if certainly the quantity of transition conduit prosopyle 521 is omited to increase to more than two, such as three, perhaps be reduced to one, should be considered as the equivalence conversion so, transition conduit prosopyle 521 communicates with aerosol washing tank tank chamber 55, that is, the water in the aerosol washing tank tank chamber 55 enters in the transition conduit tube chamber through transition water inlet tube hole 521.One end of transition conduit 52 is that illustrated left end is stretched over that aerosol washing tank tank chamber 55 is outer to be connected with aforesaid escape pipe 2, is connected with an end (diagram lower end) of the first ventpipe 54 and the other end of transition conduit 52 to be illustrated right-hand member be stretched over equally aerosol washing tank tank chamber 55 is outer, and the other end of the first ventpipe 54 (diagram upper end) is connected with the following soon bleed mechanism 3 of description.One end of aerosol washing tank water inlet pipe 53 (diagram left end) is connected with the bottom center of aerosol washing tank 51, and the other end (diagram right-hand member) is connected with gas-water separation mechanism 6.By above-mentioned explanation and in conjunction with the signal of Fig. 1 and Fig. 2 as can be known, whole aerosol washing tank 51 is by escape pipe 2, the first ventpipe 54 and aerosol washing tank water inlet pipe 53 threes supporting.

Under the work of bleed mechanism 3, when the CO (carbon monoxide converter) gas in the outlet chamber 12 in the process of drawing through escape pipe 2, because of suction function, the water in the aerosol washing tank tank chamber 55 is in transition water inlet tube hole 521 enters the transition conduit tube chamber of transition conduit 52, to embody the aerosol washing.

Aforesaid bleed mechanism 3 comprises frame 31, the first motor 32, first, second power wheel 33,34, the first transmission belt 35 and roots blower 36, frame 31 is arranged on the terrace of field of employment, the first motor 32 and roots blower 36 are fixed on the top of frame 31, the first power wheel 33 preferred fixing modes of flat key of using are fixed on the first motor shaft 321 of the first motor 32, the second power wheel 34 is fixed on the roots blower axle 361 of roots blower 36, one end of the first transmission belt 35 is nested with on the first power wheel 33, and the other end is nested with on the second power wheel 34.The fan inleting pipe 362 of roots blower 36 is connected with the first ventpipe 54 of aforesaid aerosol washing mechanism 5, and the blower fan air outlet tube 363 of roots blower 36 is connected with the following gas-water separation mechanism 6 that will describe.

In the present embodiment, aforesaid first, second power wheel 33,34 all uses belt pulley, and correspondingly, the first transmission belt 35 uses pulley belt.Yet, if use first, second power wheel 33,34 instead sprocket wheel, use the first transmission belt 35 instead driving chain simultaneously, should be considered as equivalence and substitute.The the 8th, the 9th power wheel 92 of aforesaid fire grate driving mechanism 9, the 93 and the 5th transmission belt 94 are with example.

With the aerosol washing tank water inlet pipe 53 of aerosol washing mechanism 5 and the gas-water separation mechanism 6 that is connected with the blower fan escape pipe 363 of the roots blower 36 of bleed mechanism 3 preferably but not the structure that definitely is limited to is as follows: comprise water collect tank 61, collision type gas-water separation cylindrical shell 62 and return water pipe 63, water collect tank 61 is arranged on the terrace that makes use as vapourizing furnace body of heater 1, on water collect tank 61 and the lower side that is positioned at water collect tank 61 be connected with a water collect tank water outlet mouthpiece 612 that communicates with the water collect tank chamber 611 of water collect tank 61, this water collect tank water outlet mouthpiece 612 is connected with the aerosol washing tank water inlet pipe 53 of aforesaid aerosol washing mechanism 5.Return water pipe 63 is arranged in the water collect tank tank chamber 611, and the upper end of this return water pipe 63 is stretched over outside the water collect tank tank chamber 611, sidepiece outside this return water pipe 63 is stretched over water collect tank tank chamber 611 has a side interface 631, and this side interface 631 is connected with the blower fan escape pipe 363 of the roots blower 36 of aforesaid bleed mechanism 3.Collision type gas-water separation cylindrical shell 62 is connected with the top port of return water pipe 63, in this collision type gas-water separation cylindrical shell 62, be provided with one group of first bump sheet 621 and one group of second bump sheet 622, one group of first bump sheet 621 and one group of second bump sheet 622 are one each other every a configuration, that is to say, when the first at top is the first bump sheet 621, second piece is that 622, the three pieces of the second bump sheets are again the first bump sheet 621 so, and the rest may be inferred.First, second bump sheet 621,622 structure are different, and more particularly, the first bump sheet 621 is just as plum blossom-shaped (quincunx), and the second bump sheet 622 is the shape of back-up ring.So, be formed with the outgassing groove 6211 of one group of each interval between the inwall of position, edge and the collision type gas-water separation cylindrical shell 62 of each the first bump sheet 621, and central authorities' formation production well 6221 of each the second bump sheet 622.Because first, second bump sheet 621,622 each other effect, the carbon monoxide aqueous vapor mist that is incorporated in the return water pipe 63 is being clashed into when collision type gas-water separation cylindrical shell 62 is interior, steam is just introduced water collect tank tank chamber 611 by return water pipe 63, and CO (carbon monoxide converter) gas then enters the CO (carbon monoxide converter) gas filter mechanism 4 that is connected with gas-water separation mechanism 6 and filters.

CO (carbon monoxide converter) gas filter mechanism 4 comprises cyclonic separator 41, wadding filter 42 and combustion gas fairlead 43, the lower end of cyclonic separator 41 connects with the backwater interface 613 of receiving at water collect tank 61 tops, and the upper end of cyclonic separator 41 formation has a whirlwind box 411, connect the end (diagram right-hand member) with horizontally disposed the second ventpipe 4111 on the whirlwind box 411, and the other end of the second ventpipe 4111 (diagram left end) is connected with the top of aforesaid collision type gas-water separation cylindrical shell 62 and communicates with the cylinder chamber of collision type gas-water separation cylindrical shell 62.Be equipped with Whirlwind cyclone 412 in the cavity volume of cyclonic separator 41, Whirlwind cyclone 412 is made of the 3rd ventpipe 4121 and flight 4122, and flight 4122 is formed on the outer wall of the 3rd ventpipe 4121 with spiral status.Wadding filter 42 connects at the top of cyclonic separator 41, more precisely connects at the top of whirlwind box 411, is provided with filler 421 in the cavity volume of filler separator 42, filler such as wire group (filler also can claim filtrate).One end of combustion gas fairlead 43 (illustrated upper end) is connected with the top of wadding filter 42, and the other end (namely illustrating the lower end) is connected with burner 10.This CO (carbon monoxide converter) gas filter mechanism 4 of process can make steam and the effective filtering of impurity in the CO (carbon monoxide converter) gas.

The CO (carbon monoxide converter) gas that is introduced in the CO (carbon monoxide converter) gas filter mechanism 4 through the second ventpipe 4111 just also can be described as filtrate to entering filler 421(under the guiding of flight 4122 after the lower end of the 3rd ventpipe 4121 enters the tube chamber of the 3rd ventpipe 4121 when by way of Whirlwind cyclone 412), cause burner 10 through gas outlet pipe 43.

Preferably, at the upper lateral part of aforesaid water collect tank 61 aqueduct 614 that continues, by aqueduct 614 water in the water collect tank 61 are caused aforesaid water seal collection ashpit 14.Certainly, the water in the water seal collection ashpit 14 also can be by artificial introducing.Again, the interior water level in the water level in the aforesaid aerosol washing tank tank chamber 55 and the water collect tank tank chamber of water collect tank 61 611 is identical, and namely both water levels are consistent.

The applicant sketches principle of work of the present invention, (can be biomass fuel by the ignition substance on 152 pairs of fire grates 13 of the observation door on the top board 15, also can be the flammable materials of selecting separately usefulness) ignite, starting feeding mechanism 7 sends into such as sugared by rice huller to burner hearth 11, straw, the raw material of wood chip and/or stalk and so on is through in advance compacting and be ground into the biomass fuel of the solid state of specific size (this biomass fuel both can be from the market acquisition, also can make by oneself), this biomass fuel is such as by CN201205759Y, CN20145641U, CN20145498Y, the forming machine of the Introduction To Cn Patent of CN201445499Y and CN201442359U and so on is produced.Strike off by drawing together material mechanism 8 in the process of feeding mechanism 7 feedings, the heap that occurs pagoda shape with the biomass fuel of avoiding burner hearth 11 advances effect.After biomass fuel is fed full burner hearth 11, suspend feeding mechanism 7 and draw together the work of expecting mechanism 8, only when reducing, implement again feed supplement, namely restart feeding mechanism 7 and draw together material mechanism 8.

Biomass fuel in the burner hearth 11 successively drying district 111, cracking zone 112, oxidation zone 113 and reduction zone 114 generates CO (carbon monoxide converter) gas, and escape into outlet chamber 12 from the conduit 132 of fire grate 13 through water seal collection ashpit 14, cause gas-water separation mechanism 6 gas-water separation through bleed mechanism 3 again by escape pipe 2 tying-in aerosol washing mechanisms 5, cause burner 10 by combustion gas fairlead 43 after filtering finally by carbon monoxide filter mechanism 4.

In sum, technical scheme provided by the invention has overcome the shortcoming in the prior art, has finished the invention task, has embodied objectively alleged technique effect in the superincumbent technique effect of the applicant hurdle

Claims

1. biological fuel gasification furnace, comprise and have burner hearth (11) and have the vapourizing furnace body of heater (1) of fire grate (13) in the bottom of burner hearth (11), it is characterized in that being equipped with a water seal collection ashpit (14) in the bottom of vapourizing furnace body of heater (1) and in the below corresponding to described fire grate (13), this water seal collection ashpit (14) communicates with the bottom of described burner hearth (11).