CN102703121A

CN102703121A - Biomass gas generation system

Info

Publication number: CN102703121A
Application number: CN2012100082445A
Authority: CN
Inventors: 徐欢
Original assignee: WUXI HUGUANG INDUSTRY FURNACE Co Ltd
Current assignee: WUXI HUGUANG INDUSTRY FURNACE Co Ltd
Priority date: 2012-01-12
Filing date: 2012-01-12
Publication date: 2012-10-03
Anticipated expiration: 2032-01-12
Also published as: CN102703121B

Abstract

The invention relates to a biomass gas generation system. The system comprises a feed device, a biomass gasification furnace, a post-treatment system and a gas transmission and storage pipeline system which are connected in a sequence of gas generation and treatment, wherein the biomass gasification furnace is provided with a fuel inlet and a gas outlet, the fuel inlet is connected with the feed device, and the gas outlet is communicated with the post-treatment system through a connecting pipe fitting; and the post-treatment system comprises a cyclone dust collector, a primary pipe-type intercooler, an electrical tar precipitator, a secondary pipe-type intercooler, a filter and purification device, a primary water-steam separator and a secondary water-steam separator. The biomass gas generation system has a smart and reasonable structure, cannot cause secondary pollution to the surrounding environment while biomass energy is reasonably utilized; and prepared gas can be applied to civil use instead of the conventional stove or liquefied gas, and can be applied to the industrial field, such as directly being used as industrial gas or being used for supplying power generation for power generation equipment.

Description

The biomass fuel gas generating system

Technical field

The invention belongs to biological fuel gas production unit technical field, specifically relate to a kind of biomass fuel gas generating system.

Background technology

Along with the develop rapidly of industry and the propelled at high velocity of urbanization process, energy shortage, problem of environmental pollution has been the focus of current social concerns.And crop straw burning exists with the phenomenon of using old-fashioned wood stove already in the rural area, also discharges amounts of dust and Wen Shi gas.The biomass energy waste mainly is an agricultural waste material at present, wherein can be used as energy purposes greatly.In addition, the overwhelming majority in forestry and the wood working waste also can be used as energy purposes.

The biological fuel gas of biomass gasifying furnace manufacturing belongs to green novel energy source, and it has great vitality.Because the raw material that biological fuel gas produces is agricultural crop straw, forest tree castoff, edible fungi residues, cattle and sheep animal manure and all inflammable substances, is a kind of inexhaustible renewable resource.Biological fuel gas can solve the whole day life with ability (cooking, heating, shower), and burns as liquefied gas, can change the mode of life that China's rural area smoke fire burns fully, can ban traditional bavin kitchen range fully, the replacement liquid gasification.In addition, biological fuel gas has more wide application prospect in industrial aspect, and it not only can directly use as industrial combustion gas, but also can supply with the usefulness that generating set is done generating.

Biomass gasifying furnace is the biological fuel gas production unit of using always; But present biomass gasifying furnace also is in the starting stage; Some small evaporator stoves tar in use are prone to plugging road and switch, and there is emission of bad smell etc. the time spent, and the user owing to the small evaporator stove relatively disperses simultaneously; It used the waste residue, the tar water that are produced disorderly to fall, and caused secondary pollution.

Summary of the invention

The objective of the invention is to overcome the deficiency that exists in the prior art; A kind of biomass fuel gas generating system is provided, and its structure is ingenious rationally, can be when rationally utilizing biomass energy; Can not produce secondary pollution to surrounding enviroment, the combustion gas of preparation can directly apply to industrial generation.

According to technical scheme provided by the invention: the biomass fuel gas generating system; It is characterized in that: comprising: the feeding unit, biomass gasifying furnace, after-treatment system and the gas transmission gas storage piping system that are connected successively by combustion gas generation and processing sequence; Said biomass gasifying furnace has fuel inlet and gas outlet; The burning import is connected with feeding unit, and gas outlet is communicated with after-treatment system through connecting tube; Said after-treatment system comprises cyclone dust collector, one-level tubular type inter cooler, electrical tar precipitator, secondary tubular type inter cooler, filtering and purifying, one-level moisture separator and secondary moisture separator; The import of cyclone dust collector is connected with the gas outlet of biomass gasifying furnace through connecting tube; The outlet of cyclone dust collector is divided into two branch roads; Be connected with the import of two one-level tubular type inter coolers through connecting tube respectively; The outlet of these two one-level tubular type inter coolers is connected with the import of same electrical tar precipitator through connecting tube respectively; The outlet of said electrical tar precipitator is divided into two branch roads; Be connected with the import of two secondary tubular type inter coolers through connecting tube respectively, the outlet of these two secondary tubular type inter coolers is connected with the import of filtering and purifying through connecting tube respectively again, and the outlet of said filtering and purifying is connected with the import of one-level moisture separator through connecting tube; The outlet of this one-level moisture separator is connected with the import of secondary moisture separator through connecting tube, and the outlet of this secondary moisture separator connects gas transmission gas storage piping system again.

As further improvement of the present invention, said biomass gasifying furnace comprises furnace binding, grey disc mechanism, goes out ash bucket, ash convenyer structure and admission passage;

Said furnace binding comprises urceolus, inner core, annular flange, first ring flat-plate, the second ring flat-plate ash-stopping ring, scrapes hawk and water seal circle; Inner core places in upper part of urceolus; Inner core edge, upper end and edge, urceolus upper end are through the annular flange welded seal; Through the first ring flat-plate welded seal, form water jacket between inner tank theca and the outer tube inner wall between edge, inner core lower end and the outer tube inner wall, on wall of the outer-rotor, be provided with corresponding to the water-in of water jacket bottom with corresponding to the water return outlet on water jacket top; Lower part inner wall surface of said urceolus is provided with refractory heat-insulating wall body; Said second ring flat-plate is weldingly fixed on the edge, urceolus lower end, ash-stopping ring and the coaxial setting of water seal circle, and be welded on second ring flat-plate bottom, and ash-stopping ring is interior, and the water seal circle is outside; Polylith scrapes that hawk is welded on the ash-stopping ring inwall and along the circumferential direction uniform distribution of ash-stopping ring; Said body of heater middle part is provided with the opening for feed that is used to add biomass fuel, and said opening for feed communicates with inner core inside, and said upper of furnace body is provided with the air outlet that is used to import biological fuel gas, and said air outlet communicates with inner core inside;

Said grey disc mechanism is arranged under the furnace binding, and grey disc mechanism comprises water seal inner ring, water seal outer ring, base plate, chassis, gas-distributing pipe, blast cap assembly, keeps off grey cutter, water seal slotting tool, center ring flat-plate and grate; Water seal inner ring and the coaxial setting in water seal outer ring are welded jointly on plate upper surface, form annular seal-water tank between water seal inner ring and the water seal outer ring, and the water seal circle of said bottom of furnace body inserts downwards in this annular seal-water tank; The inwall of said water seal inner ring is provided with a plurality of along the circumferential direction equally distributed bearings, and the chassis is shelved on the bearing and is connected with bearing with bearing pin, and grate is placed on the chassis; The center on said chassis is provided with through hole, and gas-distributing pipe is located in this through hole, the gas-distributing pipe top closure, and the perisporium on gas-distributing pipe top is provided with pore; Said blast cap assembly is sleeved on the gas-distributing pipe and relies on the center ring flat-plate to support, and the center ring flat-plate is fixed on the chassis, and the ventilation gaps in the blast cap assembly communicates with the pore on the gas-distributing pipe; Annular keeps off grey cutter and the coaxial setting of annular water seal slotting tool, is welded on respectively on the lower surface of said base plate; The sidewall on top, said water seal outer ring is provided with upflow tube, under the upflow tube outlet, is provided with funnel, and the water on the grey disc mechanism in the annular seal-water tank can flow into the below downwards through funnel and go out in the annular seal-water tank on the ash bucket;

Saidly go out ash bucket and be arranged under the grey disc mechanism; Go out ash bucket and comprise urceolus, inner core, flange and flanged pipe, urceolus and inner core are pyramidal structure, and their edge, upper end is weldingly fixed on the flange lower surface; Be filled with the heat-insulation and heat-preservation material between urceolus and the inner core, the inner core lower ending opening is an ash output hole; Both sides on said urceolus and the inner core are respectively arranged with flanged pipe, and the axle center of both sides flanged pipe is on same axis, and flanged pipe is used for admission passage to be passed through; Be welded with the inner ring and the outer ring of coaxial setting on the upper surface of said flange, form annular seal-water tank between inner ring and the outer ring, the water seal slotting tool that this annular seal-water tank is used on the grey disc mechanism with the top cooperates, and realizes water-lute; On the annular seal-water tank sidewall, be provided with return water pipe, in annular seal-water tank, be provided with a plurality of along the circumferential direction equally distributed support running rollers, said support running roller is used for the grey disc mechanism of rest top through its base support;

Said ash convenyer structure is arranged on out the ash bucket below, and the ash convenyer structure comprises bearing, housing, upper flange lid, lower flange lid, rotating shaft, first sealed bearing assembly, second sealed bearing assembly and driving mechanism; Said bearing has an inclination mounting face, and housing is installed on the inclination mounting face, and the housing lower end is provided with opening ash inlet up, and this ash inlet is connected with the said ash output hole that goes out ash bucket, and the housing upper end is provided with downward opening ash output hole; Said housing is double-deck water jacket housing, and bottom, housing lower end is provided with water-in, and top, housing upper end is provided with water outlet; Said housing upper end is equipped with the upper flange lid, the lower end is equipped with the lower flange lid; Rotating shaft is arranged in the housing; The rotating shaft upper end is installed in upper flange through the support of first sealed bearing assembly and covers; The rotating shaft lower end is installed in lower flange through the support of second sealed bearing assembly and covers, and rotating shaft drives through driving mechanism and rotates, and rotating shaft is provided with the flight that is used for ash-slag delivery;

Said admission passage comprises blower fan, vacuum breaker, first tracheae, high temperature resistant tracheae and main tracheae; The air outlet of blower fan is connected with the blast inlet of vacuum breaker, and the air outlet of vacuum breaker is connected with first tracheae, one end, and the first tracheae the other end is connected with high temperature resistant tracheae one end; Said high temperature resistant tracheae directly is located in going out in the ash bucket of biomass gasifying furnace, and high temperature resistant tracheae is double-deck mechanism, and it comprises outer tube and interior tracheae, forms water jacket between outer tube and the interior tracheae, is connected with the mobile water coolant in the water jacket; Tracheae one end is communicated with said first tracheae in said, be communicated with main tracheae in the middle part of the interior tracheae,, main tracheae upwards insert in the grey disc mechanism gas-distributing pipe in, be used for air is sent into below the zone of combustion in the biomass gasifying furnace.

As further improvement of the present invention; In the said furnace binding; Bottom of furnace body is equipped with many through pipe support and is used for the heat-resisting thin permeability cell of heeling-in in zone of combustion; Described many heat-resisting thin permeability cells are all upwards uniform distribution in a plurality of circumference upper edge, and the pipe top of heat-resisting thin permeability cell is provided with tapered cap, and the tube wall of heat-resisting thin permeability cell is provided with a plurality of gas-pervious apertures in zone of combustion that are used for; The said hawk of scraping is an elongated plates, the length direction of scraping hawk along ash-stopping ring radially, width and the vertical direction of scraping hawk form 3 ° angle; Said body of heater is provided with the flare type joint that is connected with inner core inside; Be provided with an enforced loop plane co-axial with it in the said ash-stopping ring, the inner that said polylith is scraped hawk all is weldingly fixed on the enforced loop plane; Be provided with stiffening plate between said inner tank theca and the outer tube inner wall; Be provided with first between said second ring flat-plate upper surface and the outer tube inner wall and strengthen gusset; Be provided with second between the said water seal ring outer wall and the second ring flat-plate lower surface and strengthen gusset, be provided with the 3rd between said ash-stopping ring outer wall and the water seal circle inwall and strengthen gusset; Said refractory heat-insulating wall body adopts the refractory castable cast to form or be built into by refractory brick.

As further improvement of the present invention; In the said grey disc mechanism, the blast cap assembly comprises the blast cap of at least two range upon range of settings, and described blast cap shape is identical; Be taper barrel; Reduce gradually but size is bottom-up, nethermost blast cap is fixed on the ring flat-plate of center through retaining plate, and the blast cap of last layer is fixed on down on the upper surface of one deck blast cap through retaining plate; Blast cap assembly periphery in the said water seal inner ring is provided with air loop duct, and said air loop duct is connected with admission passage; The bottom on said chassis is provided with lime scraping knife, and the lime scraping knife length direction is to the inclined to one side 5 degree angles of the sense of rotation on chassis; Be provided with the along the circumferential direction equally distributed outer gusset of polylith between the outer wall of said water seal outer ring and the upper surface of base plate, the outer end of the outer gusset of said polylith all is welded on the same ring flat-plate, and this ring flat-plate is weldingly fixed on the base plate; Bottom in the said water seal between ring outer wall and the water seal outer ring inwall is provided with the along the circumferential direction equally distributed inner reinforced plate of polylith; Said base plate lower surface is provided with the sawtooth circle that is used to receive motivating force; Said gas-distributing pipe lower end is fitted with retaining ash cover.

As further improvement of the present invention, saidly go out in the ash bucket, the heat-insulation and heat-preservation material adopts aluminum silicate fiber; The said tapering α that goes out ash bucket is 45 ~ 80 degree; Said ash output hole is a rectangle, and the inwall of said inner core lower part is made as four planes, and these four planes are the four edges of corresponding rectangle ash output hole respectively; The said middle part that goes out ash bucket is provided with vision slit, and said lower part that goes out ash bucket is provided with access opening.

As further improvement of the present invention, in the said ash convenyer structure, driving mechanism adopts the deceleration direct-current machine, and the output shaft of deceleration direct-current machine is connected transmission through shaft coupling with rotating shaft, and the rotating shaft lower end is supported through chock; Said first sealed bearing assembly comprises gland, acorn nut, clutch shaft bearing, clutch shaft bearing seat and first felt collar; The clutch shaft bearing seat is fixed on upper flange and covers; The clutch shaft bearing support assemblies is passed through in the clutch shaft bearing seat in the rotating shaft upper end; Clutch shaft bearing is equipped with first felt collar of sealing usefulness through acorn nut locking and through gland seal between rotating shaft and clutch shaft bearing seat; Said second sealed bearing assembly comprises second chock, second bearing, step cover and stuffing box; Second chock is fixed on lower flange and covers; The rotating shaft lower end is assemblied in second chock through second bearings, and second bearing compresses through step cover, and step cover is fixed by bolts on second chock; Second felt collar of sealing usefulness is housed respectively between the rotating shaft and second chock, the step cover, and stuffing box is arranged on the step cover outside; Said ash output hole connects Blowing stopper, is provided with pressure tap on the ash output hole next door.

As further improvement of the present invention, the zone of combustion below in the said biomass gasifying furnace also is provided with annular gas pipe, and the said high temperature resistant tracheae the other end is communicated with annular gas pipe through second tracheae, the 3rd tracheae successively; Said high temperature resistant tracheae one end is provided with into water interface, and the other end is provided with the backwater interface, and the water inlet interface is communicated with the cooling basin through suction culvert, and the backwater interface connects water return pipeline, and suction pump is installed on the water return pipeline; Said first tracheae is provided with temperature element, venting and pressure measurement interface, is fitted with aluminium foil explosive-proof protector film on the venting, and the pressure measurement interface is used to connect pressure instrumentataion; Said first air pipe is provided with the steam access tube.

As further improvement of the present invention; Said feeding unit comprises blanking device and feeding conveyor; Said blanking device comprises Connection Block, lower shell, bell jar valve body, valve seat, conical seat, upper shell, supporting sealing frame, first bar, second bar, chain cover, suspension chain and bracket institution; Lower shell supports through bracket institution, and the lower shell lower end is installed with the Connection Block that is used to connect feeding conveyor, and the lower shell upper end is connected with the upper shell lower end through flange; Fixing along welding in conical seat edge, upper end and the upper shell lower end, valve seat is installed in the conical seat lower end; Supporting sealing frame is installed on the upper shell outer wall, is provided with rotating shaft in the supporting sealing frame; Said first bar, one end is installed in the rotating shaft and follows rotating shaft and rotate synchronously, and the first bar the other end is installed chain cover, hangs the bell jar valve body through the suspension chain on the chain cover, and this bell jar valve body matches with said valve seat, and the control biomass fuel gets into; Said second bar, one end is installed in the rotating shaft and follows rotating shaft and rotate synchronously, the second bar the other end hinge pull bar.

As further improvement of the present invention; Said bracket institution comprises toroidal frame, link span, auxilliary bracing frame, bearing and column; Toroidal frame is fixed on the lower shell periphery wall; Be distributed with the column of two degree of being symmetric arrangement in the lower shell both sides, column upper end welding bearing, toroidal frame is stated in bearing rest residence; Said link span is fixed on the toroidal frame, and link span is fixed on the auxilliary bracing frame, and auxilliary bracing frame is fixed on top of gasification furnace; The tapering of said bell jar valve body is 50 ~ 75 degree.

As further improvement of the present invention; Said feeding conveyor comprises housing, main drive shaft, driven shaft, drive sprocket, driven sprocket, chain belt, scraper plate, bed of material walking plate and driving mechanism; Said housing is microscler, and case top is provided with and is used for the opening for feed that is connected with the Connection Block lower end, and said housing one end is installed main drive shaft through first bearing assembly; The housing the other end is installed driven shaft through second bearing assembly; Said main drive shaft is positioned at the intravital two ends of shell drive sprocket is installed respectively, and said driven shaft is positioned at the intravital two ends of shell driven sprocket is installed respectively, respectively is connected transmission through a chain belt between two driven sprockets and two drive sprockets; Be provided with some scraper plates between said two chain belts, the scraper plate two ends are connected on two chain belts and follow chain belt and are synchronized with the movement; Bed of material walking plate is horizontally set in the housing along the length direction of housing, said scraper plate base near but do not contact bed of material walking plate upper surface.

As further improvement of the present invention, also be provided with the strainer that is used for two chain belts of tensioning on the said feeding conveyor; Said strainer has two covers; Chain belt of the corresponding tensioning of every cover strainer, single cover strainer comprises wheel carrier and tightener sprocket, said wheel carrier is microscler; Offer mounting long holes on the wheel carrier; Wheel carrier is fastened on the housing through the bolt part that is contained in this mounting long holes, and said tightener sprocket is installed in wheel carrier upper end, and tightener sprocket meshes with chain belt and with the chain belt tensioning.

As further improvement of the present invention; Said first bearing assembly comprises preceding gland seat, preceding gland, rear pressing cover seat and rear pressing cover; Preceding gland seat, rear pressing cover seat are separately fixed on the front and back sidewall of housing; On the gland seat, rear pressing cover was contained on the rear pressing cover seat before preceding gland was contained in, and said both ends of main drive shaft is assemblied in preceding gland, the rear pressing cover through sleeve supporting respectively; Said second bearing assembly comprises two chocks, and two chocks are separately positioned on the front and back side of housing, and the two ends of said driven shaft are assemblied in two chocks through sleeve supporting respectively.

As further improvement of the present invention, said driving mechanism comprises motor and speed reducer, and step-down gear is fixedly mounted on case top through the step-down gear base, and motor is connected with step-down gear, installing drive sprocket wheel on the output shaft of step-down gear; The shaft extension end of said main drive shaft is equipped with driving chain wheel, and this driving chain wheel is connected transmission with said drive sprocket through chain; Said step-down gear adopts cycloidal planetary gear speed reducer; End and bottom near opening for feed one end on the said housing are respectively equipped with opening, and the opening of shell end is sealed through dismountable valve gap and sealing-ring, and the opening of housing bottom is sealed through dismountable cover plate and sealing-ring.

As further improvement of the present invention, also be provided with in the said body of heater and be used to scraper that fuel charge level height is consistent; Said scraper comprises transmission shaft, scrapes materials and parts and driving mechanism, and transmission shaft is inserted downwards in the body of heater by the furnace roof center, and the transmission shaft upper end is supported through supporting component and installed, and transmission shaft relies on the drive mechanism rotation, and the said charging tray of scraping is fixed on the transmission shaft lower end.

As further improvement of the present invention; Said supporting component comprises mount pad, thrust ball bearing, deep groove ball bearing and gland; Mount pad is fixed on the furnace roof; The axle journal of transmission shaft upper end is contained in the centre hole of mount pad, and thrust ball bearing is sleeved on the axle journal and through nut locking, two seat rings of thrust ball bearing contact respectively and support mount pad and nut; Deep groove ball bearing is sleeved on the axle journal, and the inside and outside circle of deep groove ball bearing contacts journal and mount pad respectively; Gland is installed on the mount pad, and gland is encapsulated in thrust ball bearing and deep groove ball bearing in the centre hole of mount pad; Clamped paronite between said mount pad and the furnace roof, between said mount pad and the transmission shaft sealing-ring has been housed.

As further improvement of the present invention; Said driving mechanism comprises motor reducer, minor sprocket, hinge wheel and chain; Motor reducer is fixed on the furnace roof through seat supports; Minor sprocket is installed on the output shaft of motor reducer, and hinge wheel is installed in said transmission shaft upper end, is connected transmission through chain between hinge wheel and the minor sprocket; Said transmission shaft upper end suit drive sleeve is also passed through flat key connection transmission, and hinge wheel is installed on the drive sleeve through shearing pin.

As further improvement of the present invention, said transmission shaft is provided with and is used to the supplemental support mechanism that keeps transmission shaft stable; Said supplemental support mechanism comprises guide pin bushing, lining, platen, connecting rod and supporting seat, and guide pin bushing is fixed on the transmission shaft, and platen is assemblied on the guide pin bushing through lining and can freely rotating; Said platen periphery is provided with at least three along its hinged-support that circumferentially is uniformly distributed with, and an end of at least three connecting rods is hinged on hinged-support, the other end hinge supporting seat of at least three connecting rods, and supporting seat is supported on the inboard wall of furnace body surface; The said charging tray of scraping comprises that center hub and Duo Gen are connected the scraping rod on the center hub, and center hub is fixed on the transmission shaft lower end through fastening piece, many scraping rods uniform distribution along the circumferential direction on center hub.

As further improvement of the present invention; Said cyclone dust collector comprises support, primary cyclone and secondary cyclone; Said primary cyclone, secondary cyclone pass through stent support; The blast pipe of primary cyclone is used to feed pending combustion gas, and the exhaust duct of primary cyclone links to each other with the blast pipe of secondary cyclone, and the exhaust duct of secondary cyclone is used for the combustion gas after handling is transported to the next stage treatment facility.

As further improvement of the present invention, said primary cyclone is identical with the structure of secondary cyclone, and they include blast pipe, exhaust duct and cylindrical shell; The cylindrical shell upper semisection is cylindrical; Lower semisection is conical, and blast pipe is arranged on the cylindrical shell, and air-flow is the tangential from the direction that blast pipe gets into; Exhaust duct is coaxial to be arranged in the cylindrical shell; The exhaust duct bottom is shrunk to taper shape downwards gradually, and the tube wall of exhaust duct is provided with the longer tuyere of multiple tracks along its length direction, and said longer tuyere is a single deflection grille; Said multiple tracks longer tuyere circumferentially is uniformly distributed with in the tube wall upper edge of exhaust duct, and exhaust duct lower end tube wall is provided with a plurality of along its wind hole that circumferentially is uniformly distributed with; Be provided with a sleeve body that shape is suitable with it outside the said cylindrical shell, form water jacket between sleeve body inwall and the cylinder body outer wall, the water jacket bottom is provided with water-in, and water jacket top is provided with water outlet; Said cylindrical shell lower end also is connected with a conic tube, and the bore of conic tube upper end is greater than the bore of cylindrical shell lower end.

As further improvement of the present invention; Said one-level tubular type inter cooler comprises bracing frame, water-cooled case, air intake casing, the housing of giving vent to anger, water inlet box, water outlet box, serpentine tube, water inlet pipe and rising pipe; Said water-cooled case supports through bracing frame; The water-cooled case is at least one, and the range upon range of placement of at least one water-cooled case is tightly connected between the casing of all water-cooled casees; The bottom half of bottom water-cooled case is equipped with the air intake casing that is communicated with inlet pipe, and topmost the casing top of water-cooled case is equipped with the housing of giving vent to anger; The both sides of said casing front surface seal respectively installs water inlet box and water outlet box; Be provided with many serpentine tubes in the casing in the different heights staggered arrangement; The two ends of many serpentine tubes are communicated with said water inlet box and water outlet box respectively, and water coolant can circulate in serpentine tube from bottom to top; Said water inlet pipe is arranged in bracing frame and water-cooled case one side, and the water inlet box bottom on each water-cooled case is communicated with water inlet pipe through the water inlet arm, on each water inlet arm a valve is installed all; Rising pipe is arranged in bracing frame and water-cooled case opposite side, and an exit branch is all installed on the water outlet box top on each water-cooled case, and the water outlet below of each exit branch is provided with a funnel, and this funnel is communicated with said rising pipe; The structure of said secondary tubular type inter cooler is identical with one-level tubular type inter cooler.

As further improvement of the present invention, the said housing of giving vent to anger is provided with venting, and relief pipe is installed on the venting, and decompression hand valve is installed on the relief pipe; The bottom of said air intake casing is connected with aggregate pipe, and the aggregate pipe lower end connects collection bucket, and first valve open in usual is installed on the aggregate pipe; Said collection bucket bottom is equipped with drainage conduit, and second valve of normally closed type is installed on the drainage conduit; Said water-cooled case has six, and the water-cooled case is square.

As further improvement of the present invention; Said combustion gas filtering and purifying comprises air inlet pants pipe, valve, first gas filter, second gas filter and the pants pipe of giving vent to anger; The person in charge of said air inlet pants pipe is used for air inlet, and the person in charge of the pants pipe of giving vent to anger is used to give vent to anger; An arm of air inlet pants pipe is connected with the inlet mouth of first gas filter through a valve, and the air outlet of first gas filter is through one pipe coupling of another valve with the pants pipe of giving vent to anger; Another arm of air inlet pants pipe is connected with the inlet mouth of second gas filter through a valve, and the air outlet of second gas filter is through another valve another pipe coupling with the pants pipe of giving vent to anger.

As further improvement of the present invention, said valve adopts Hand-operated butterfly valve; The person in charge of described air inlet pants pipe, the pants pipe of giving vent to anger is identical with the caliber of arm.

As further improvement of the present invention; Said one-level moisture separator comprises cyclonic separator and water tank; Said cyclonic separator is through stent support, and the blast pipe of cyclonic separator is used to feed the combustion gas that contains moisture, and the exhaust duct of cyclonic separator is used for the combustion gas behind the separation moisture is transported to the next stage treatment facility; The liquid outlet of cyclonic separator bottom is connected with pipeline, and this lower end of duct stretches in the water tank; Said water tank upper is provided with upflow tube, is used for the liquid level in the water tank is maintained certain altitude; The structure of said secondary moisture separator is identical with the one-level moisture separator.

As further improvement of the present invention, said cyclonic separator comprises blast pipe, exhaust duct and cylindrical shell, and the cylindrical shell upper semisection is cylindrical; Lower semisection is conical; Blast pipe is arranged on the cylindrical shell, and air-flow is the tangential from the direction that blast pipe gets into, and exhaust duct is coaxial to be arranged in the cylindrical shell; The exhaust duct bottom is shrunk to taper shape downwards gradually; The tube wall of exhaust duct is provided with the longer tuyere of multiple tracks along its length direction, and said multiple tracks longer tuyere circumferentially is uniformly distributed with in the tube wall upper edge of exhaust duct, and exhaust duct lower end tube wall is provided with a plurality of along its wind hole that circumferentially is uniformly distributed with; Said longer tuyere is a single deflection grille.

As further improvement of the present invention; Said gas transmission gas storage piping system comprises connecting tube, roots blower, smoke evacuation purification of combustion device and coal gas surge tank; The outlet of said secondary moisture separator is connected respectively with smoke evacuation purification of combustion device, coal gas surge tank through connecting tube; Said roots blower is arranged on the connecting tube; Be used to provide carrying capacity, said smoke evacuation purification of combustion device is used for removing the detrimental impurity composition of discharging gas, and said coal gas surge tank is used for temporary biological fuel gas.

As further improvement of the present invention, said smoke evacuation purification of combustion device comprises blower fan, air intake pipeline, burning purification pipe, supporting tube, stovepipe, following flat flame burner, goes up flat flame burner, following high temperature steel dividing plate and last high temperature steel dividing plate; Blower fan connects the air intake pipeline, and the burning purification pipe supports through supporting tube, and the lower end import of burning purification pipe is connected with the foreign gas access tube, is used to feed pending foreign gas; The upper end outlet of burning purification pipe connects stovepipe, is provided with stack cover directly over the stovepipe, and stack cover is fixed on the stovepipe through support bar; Said burning purification pipe inwall is provided with refractory masses; Following flat flame burner is arranged on a side of burning purification pipe bottom; Last flat flame burner is arranged on the opposite side on burning purification pipe top; Following flat flame burner, be provided with burner block around going up flat flame burner, following flat flame burner, go up flat flame burner air respectively with the air intake pipeline connection, following flat flame burner, the fuel gas inlet that goes up flat flame burner are communicated with gas line respectively; Following high temperature steel dividing plate is arranged on the bottom in the burning purification pipe, and under the flat flame burner, the side near following flat flame burner on the following high temperature steel dividing plate is provided with ventilating pit under being positioned at; Last high temperature steel dividing plate is arranged on the middle part in the burning purification pipe, is positioned on the following flat flame burner, goes up under the flat flame burner, and the side near last flat flame burner on the last high temperature steel dividing plate is provided with ventilating pit.

As further improvement of the present invention, said burning purification pipe comprises first pipe fitting and second pipe fitting that connects through flange, and the upper end of first pipe fitting is conical, and its top is provided with pipe connecting, and the pipe connecting upper end is connected with said stovepipe; Second pipe fitting supports through supporting tube, and the lower end of second pipe fitting is conical, and its bottom is provided with bridge piece, and bridge piece is connected with the foreign gas access tube; Said burning purification pipe bottom is provided with the nozzles with injector that spout makes progress, and nozzles with injector is near following flat flame burner one side on the burning purification pipe, nozzles with injector and said air intake pipeline connection; Clamped one deck silk between said burning purification pipe lower end import and the foreign gas access tube and directly be 0.6mm, the order number is 10 purpose Stainless Steel Wire screen cloths, in case non-return is fiery; The composition of said refractory masses is aluminosilicate property refractory fibre, polycrystalline alumina fiber, mullite fiber or Zirconium oxide fibre.

The present invention compared with prior art, advantage is: structure of the present invention is ingenious rationally, can when rationally utilizing biomass energy, can not produce secondary pollution to surrounding enviroment, and the combustion gas of preparation both can be used as civilian, banned traditional bavin kitchen range, the replacement liquid gasification; Also can be applied in industrial aspect, as directly using, or supply with the usefulness that generating set is done generating as industrial combustion gas.

Description of drawings

Fig. 1 is the structural representation of the embodiment of the invention.

Fig. 2 is the structure vertical view of the embodiment of the invention.

Fig. 3 is the structural representation of biomass gasifying furnace.

Fig. 4 is the furnace binding synoptic diagram in the biomass gasifying furnace.

Fig. 5 is the furnace binding vertical view in the biomass gasifying furnace.

Fig. 6 is the structural representation of the grey disc mechanism in the biomass gasifying furnace.

Fig. 7 is the structure vertical view of the grey disc mechanism in the biomass gasifying furnace.

Fig. 8 is the structural representation that goes out ash bucket in the biomass gasifying furnace.

Fig. 9 is the structure vertical view that goes out ash bucket in the biomass gasifying furnace.

Figure 10 is the structural representation of the ash convenyer structure in the biomass gasifying furnace.

Figure 11 is the A portion enlarged diagram among Figure 10.

Figure 12 is the B portion enlarged diagram among Figure 10.

Figure 13 is the structural front view of the admission passage in the biomass gasifying furnace.

Figure 14 is the structural representation of feeding unit.

Figure 15 is the structural front view of blanking device among Figure 14.

Figure 16 is the left view of Figure 15.

Figure 17 is the vertical view of Figure 15.

Figure 18 is the structural front view of feeding conveyor among Figure 14.

Figure 19 is the vertical view of Figure 18.

Figure 20 is the structural front view of scraper.

Figure 21 is the C portion enlarged diagram among Figure 20.

Figure 22 is the structural representation of cyclone dust collector.

Figure 23 is the vertical view of Figure 22.

Figure 24 is the structural representation of one-level tubular type inter cooler.

Figure 25 is the vertical view of Figure 24.

Figure 26 is the structural representation of filtering and purifying.

Figure 27 is the structural representation of one-level moisture separator.

Figure 28 is the vertical view of Figure 27.

Figure 29 is the structural representation of smoke evacuation purification of combustion device.

Figure 30 is the vertical view of Figure 29.

Embodiment

Below in conjunction with concrete accompanying drawing and embodiment the present invention is described further.

Biomass fuel gas generating system among the embodiment mainly comprises feeding unit 1, biomass gasifying furnace, after-treatment system and gas transmission gas storage piping system; They are connected with processing sequence by the combustion gas generation successively; Said biomass gasifying furnace has fuel inlet and gas outlet; The burning import is connected with feeding unit 1, and gas outlet is communicated with after-treatment system through connecting tube; Said after-treatment system comprises cyclone dust collector 8, one-level tubular type inter cooler 9, electrical tar precipitator 10, secondary tubular type inter cooler 11, filtering and purifying 12, one-level moisture separator 13 and secondary moisture separator 14; The import of cyclone dust collector 8 is connected with the gas outlet of biomass gasifying furnace through connecting tube; The outlet of cyclone dust collector 8 is divided into two branch roads; Be connected with the import of two one-level tubular type inter coolers 9 through connecting tube respectively; The outlet of these two one-level tubular type inter coolers 9 is connected with the import of same electrical tar precipitator 10 through connecting tube respectively; The outlet of said electrical tar precipitator 10 is divided into two branch roads; Be connected with the import of two secondary tubular type inter coolers 11 through connecting tube respectively, the outlet of these two secondary tubular type inter coolers 11 is connected with the import of filtering and purifying 12 through connecting tube respectively again, and the outlet of said filtering and purifying 12 is connected with the import of one-level moisture separator 13 through connecting tube; The outlet of this one-level moisture separator 13 is connected with the import of secondary moisture separator 14 through connecting tube, and the outlet of this secondary moisture separator 14 connects gas transmission gas storage piping system again.

Said biomass gasifying furnace is the main part that produces biological fuel gas, its mainly by furnace binding 2, grey disc mechanism 3, go out ash bucket 4, ash convenyer structure 5 and admission passage 6 and form.

The structure of said furnace binding 2 such as Fig. 3 ~ shown in Figure 5, it is mainly strengthened gusset 2.10, second ring flat-plate 2.11, second by annular flange 2.1, inner core 2.2, urceolus 2.4, stiffening plate 2.5, flare type joint 2.7, first ring flat-plate 2.9, first and strengthens gusset the 2.12, the 3rd and strengthen gusset 2.13, water seal circle 2.14, scrape component such as hawk 2.15, ash-stopping ring 2.16, enforced loop plane 2.17, pipe support 2.20 and heat-resisting thin permeability cell 2.21 and form.Inner core 2.2 places in upper part of urceolus 2.4; Inner core edge, 2.2 upper end and edge, urceolus 2.4 upper end are through annular flange 2.1 welded seals; Pass through first ring flat-plate, 2.9 welded seals between inner core edge, 2.2 lower end and urceolus 2.4 inwalls; Form water jacket between inner core 2.2 outer walls and urceolus 2.4 inwalls; On urceolus 2.4 walls, be provided with corresponding to the water-in 2.18 of water jacket bottom with corresponding to the water return outlet 2.19 on water jacket top, water-in 2.18 connects water inlet pipes 2.8 (just in order to represent the position of water-in 2.18 on short transverse, the position on its circumference is by shown in Figure 5 for water inlet pipe 2.8 positions among Fig. 4); Lower part inner wall surface of said urceolus 2.4 is provided with refractory heat-insulating wall body 2.6; Said second ring flat-plate 2.11 is weldingly fixed on the edge, urceolus 2.4 lower end; Ash-stopping ring 2.16 and the 2.14 coaxial settings of water seal circle, and be welded on second ring flat-plate, 2.11 bottoms, ash-stopping ring 2.16 is interior; Water seal circle 2.14 outside; Water seal circle 2.14 is used for cooperating with the grey disc mechanism 3 of below, realizes water-lute, prevents gas leak; Polylith scrapes that hawk 2.15 is welded on ash-stopping ring 2.16 inwalls and along the circumferential direction uniform distribution of ash-stopping ring 2.16; Said body of heater middle part is provided with the opening for feed 2.22 that is used to add biomass fuel, and said opening for feed 2.22 communicates with inner core 2.2 inside, and said upper of furnace body is provided with the air outlet 2.3 that is used to import biological fuel gas, and said air outlet 2.3 communicates with inner core 2.2 inside.

Among the present invention, described water jacket width is 100 ~ 250mm, highly is 2000 ~ 4000mm, and interior stove diameter is Ф 2000 ~ Ф 4500mm.The thickness of said refractory heat-insulating wall body 2.6 is 150 ~ 350mm, highly is 800 ~ 2000mm, and diameter is Ф 2000 ~ Ф 4500mm.

Like Fig. 3 ~ shown in Figure 5; Said bottom of furnace body is equipped with many through pipe support 2.20 and is used for the heat-resisting thin permeability cell 2.21 of heeling-in in zone of combustion; Described many heat-resisting thin permeability cells 2.21 are all upwards uniform distribution in a plurality of circumference upper edge; The pipe top of heat-resisting thin permeability cell 2.21 is provided with tapered cap, and described tapered cap can prevent that heat-resisting thin permeability cell 2.21 is plugged; The tube wall of said heat-resisting thin permeability cell 2.21 is provided with a plurality of gas-pervious apertures in zone of combustion that are used for.Among the present invention, in general the number of described heat-resisting thin permeability cell 2.21 is provided with 15 ~ 27 according to the size setting of body of heater, and the internal diameter size of heat-resisting thin permeability cell 2.21 is generally Ф 60 ~ Ф 108mm.Described heat-resisting thin permeability cell 2.21 can solve ventilation property, the incendivity of pulverized fuel, improves gas producing efficiency, avoids the body of heater fuel to extinguish phenomenon, makes fuel combustion even.

Like Fig. 3 ~ shown in Figure 5; The said hawk 2.15 of scraping is elongated plates; The length direction of scraping hawk 2.15 along ash-stopping ring 2.16 radially, width and the vertical direction of scraping hawk 2.15 form 3 ° angle, help like this lime-ash is dropped down onto out in the ash bucket 4 to pressing down.Said body of heater is provided with the flare type joint 2.7 that is connected with inner core 2.2 inside, and flare type joint 2.7 is used to connect the thermometric components and parts, with the intravital temperature of real-time detection stove, is convenient to control.

In order to improve overall construction intensity of the present invention, be provided with an enforced loop plane 2.17 co-axial in the said ash-stopping ring 2.16 with it, the inner that said polylith is scraped hawk 2.15 all is weldingly fixed on the enforced loop plane 2.17.From same purpose; Be provided with stiffening plate 2.5 between said inner core 2.2 outer walls and urceolus 2.4 inwalls; Be provided with first between said second ring flat-plate, 2.11 upper surfaces and urceolus 2.4 inwalls and strengthen gusset 2.10; Be provided with second between said water seal circle 2.14 outer walls and second ring flat-plate, 2.11 lower surfaces and strengthen gusset 2.12, be provided with the 3rd between said ash-stopping ring 2.16 outer walls and water seal circle 2.14 inwalls and strengthen gusset 2.13.Said refractory heat-insulating wall body 2.6 can adopt the refractory castable cast to form or be built into by refractory brick.

Said grey disc mechanism 3 be arranged on furnace binding 2 under; Structure such as Fig. 6, shown in Figure 7 of ash disc mechanism 3, it mainly is made up of the grey cutter of gas-distributing pipe 3.1, blast cap 3.2, retaining plate 3.3, chassis 3.4, bearing pin 3.5, upflow tube 3.6, water seal inner ring 3.7, water seal outer ring 3.8, funnel 3.9, ring flat-plate 3.10, outer gusset 3.11, sawtooth circle 3.12, inner reinforced plate 3.13, water seal slotting tool 3.14, base plate 3.15, retaining 3.16, bearing 3.17, center ring flat-plate 3.18, retaining ash cover 3.19 lime scraping knifes 3.20 and grate 3.21.Water seal inner ring 3.7 and the 3.8 coaxial settings of water seal outer ring are welded jointly on base plate 3.15 upper surfaces, form annular seal-water tank between water seal inner ring 3.7 and the water seal outer ring 3.8; The inwall of said water seal inner ring 3.7 is provided with a plurality of along the circumferential direction equally distributed bearings 3.17, and chassis 3.4 is shelved on the bearing 3.17 and is connected with bearing 3.17 with bearing pin 3.5, and grate 3.21 is placed on the chassis 3.4; The center on said chassis 3.4 is provided with through hole, and gas-distributing pipe 3.1 is located in this through hole, gas-distributing pipe 3.1 top closure, and the perisporium on gas-distributing pipe 3.1 tops is provided with pore; Said blast cap assembly is sleeved on the gas-distributing pipe 3.1 and relies on center ring flat-plate 3.18 to support, and center ring flat-plate 3.18 is fixed on the chassis 3.4, and the ventilation gaps in the blast cap assembly communicates with the pore on the gas-distributing pipe 3.1; Annular keeps off grey cutter 3.16 and the 3.14 coaxial settings of annular water seal slotting tool, is welded on respectively on the lower surface of said base plate 3.15.

Said annular seal-water tank is used for cooperating with the water seal circle 2.14 of bottom of furnace body, and water seal circle 2.14 inserts downwards in this annular seal-water tank, realizes water-lute; Said water seal slotting tool 3.14 is used to insert its below and goes out in the water sealed tank of ash bucket 4, thereby realizes water-lute, makes to keep malleation in the vapourizing furnace.

The structure of said blast cap assembly is as shown in Figure 6; Its blast cap 3.2 by three range upon range of settings is formed; Described three blast cap 3.2 shapes are identical; Reduce gradually but size is bottom-up, nethermost blast cap 3.2 is fixed on the center ring flat-plate 3.18 through retaining plate 3.3, and the blast cap 3.2 of last layer is fixed on down on the upper surface of one deck blast cap 3.2 through retaining plate 3.3.The shape of said blast cap 3.2 preferably is set to taper barrel.

Blast cap assembly peripheries in the said water seal inner ring 3.7 can also be provided with an air loop duct, and air loop duct is connected with admission passage 6, can realize even ventilation like this, make the burning unanimity, have gas production rate greatly and the advantage of sufficient combustion.The bottom on said chassis 3.4 is provided with lime scraping knife 3.20; Lime scraping knife 3.20 length directions are to the inclined to one side 5 degree angles of the sense of rotation on chassis 3.4; When lime-ash sees through grate 3.21 and chassis 3.4 when falling into ash discharge bucket 4, lime scraping knife 3.20 can squeeze blocky lime-ash broken, is convenient to follow-up recycling.The sidewall on 3.8 tops, said water seal outer ring is provided with upflow tube 3.6, under upflow tube 3.6 outlets, is provided with funnel 3.9, and the water on the grey disc mechanism 3 in the annular seal-water tank can flow into the below downwards through funnel 3.9 and go out in the annular seal-water tank on the ash bucket 4; Can make the water in the annular seal-water tank remain on certain altitude like this, can not overflow and flow in the grey disc mechanism 3.

As shown in Figure 6; In order to improve structural strength of the present invention; Be provided with the along the circumferential direction equally distributed outer gusset 3.11 of polylith between the outer wall of said water seal outer ring 3.8 and the upper surface of base plate 3.15; The outer end of the outer gusset 3.11 of said polylith all is welded on the same ring flat-plate 3.10, and this ring flat-plate 3.10 is weldingly fixed on the base plate 3.15.Bottom between said water seal inner ring 3.7 outer walls and water seal outer ring 3.8 inwalls is provided with the along the circumferential direction equally distributed inner reinforced plate 3.13 of polylith.Said base plate 3.15 lower surfaces are provided with sawtooth circle 3.12, are used to receive the individual drive of external motivating force, make to operate reliably steadily, can guarantee that when ash discharge zone of combustion stablizes twist.Said gas-distributing pipe 3.1 lower ends are fitted with retaining ash cover 3.19, and retaining ash cover 3.19 is used to prevent that lime-ash from getting in the admission passage 6, avoids the latch up phenomenon of admission passage 6.

Saidly go out ash bucket 4 and be arranged under the grey disc mechanism 3; Go out structure such as Fig. 8, shown in Figure 9 of ash bucket 4, it mainly is made up of urceolus 4.8, inner core 4.7, flange 4.5 and flanged pipe 4.6, and said urceolus 4.8 is a pyramidal structure with inner core 4.7; Their edge, upper end is weldingly fixed on flange 4.5 lower surfaces; Be filled with heat-insulation and heat-preservation material 4.10 between urceolus 4.8 and the inner core 4.7, the said heat-insulation and heat-preservation material 4.10 preferred aluminum silicate fibers that adopt, said inner core 4.7 lower ending openings are ash output hole 4.12; Both sides on said urceolus 4.8 and the inner core 4.7 are respectively arranged with flanged pipe 4.6, and the axle center of both sides flanged pipe 4.6 is on same axis, and flanged pipe 4.6 is used for admission passage 6 to be passed through.Be welded with the inner ring 4.1 and outer ring 4.2 of coaxial setting on the upper surface of said flange 4.5, form annular seal-water tank between inner ring 4.1 and the outer ring 4.2, the water seal slotting tool 3.14 that this annular seal-water tank is used on the grey disc mechanism 3 with the top cooperates the realization water-lute; On the annular seal-water tank sidewall, be provided with return water pipe 4.13, in annular seal-water tank, be provided with a plurality of along the circumferential direction equally distributed support running rollers 4.3, said support running roller 4.3 supports through its base 4.4, is used for the grey disc mechanism 3 of rest top.Fall smoothly in order to ensure dry ash, fouling phenomenon can not occur, the said tapering α that goes out ash bucket 4 is 45 ~ 80 degree.

Like Fig. 8, shown in Figure 9, said ash output hole 4.12 is a rectangle, and the inwall of said inner core 4.7 lower parts is made as four planes, and these four planes are the four edges of corresponding rectangle ash output hole 4.12 respectively.In addition, the said middle part that goes out ash bucket 4 is provided with vision slit 4.9, and said lower part that goes out ash bucket 4 is provided with access opening 4.11.

Said ash convenyer structure 5 is arranged on out ash bucket 4 belows; The structure of ash convenyer structure 5 such as Figure 10 ~ shown in Figure 12, it mainly is made up of bearing 5.1, housing 5.5, upper flange lid 5.3, lower flange lid 5.9, rotating shaft 5.6, first sealed bearing assembly, second sealed bearing assembly and driving mechanism; Said bearing 5.1 has an inclination mounting face; Housing 5.5 is installed on the inclination mounting face; Housing 5.5 lower ends are provided with opening ash inlet 5.8 up, and this ash inlet 5.8 is connected with the said ash output hole 4.12 that goes out ash bucket 4, and housing 5.5 upper ends are provided with downward opening ash output hole 5.2; Said housing 5.5 is double-deck water jacket housings 5.5, and bottom, housing 5.5 lower end is provided with water-in 5.13, and top, housing 5.5 upper end is provided with water outlet 5.4; Said housing 5.5 upper ends are equipped with upper flange lid 5.3, the lower end is equipped with lower flange lid 5.9; Rotating shaft 5.6 is arranged in the housing 5.5; Rotating shaft 5.6 upper ends are supported through first sealed bearing assembly and are installed on the upper flange lid 5.3; Rotating shaft 5.6 lower ends are supported through second sealed bearing assembly and are installed on the lower flange lid 5.9, and rotating shaft 5.6 drives through driving mechanism and rotates, and rotating shaft 5.6 is provided with the flight 5.7 that is used for ash-slag delivery.

Shown in Figure 10 ~ 12, described driving mechanism adopts deceleration direct-current machine 5.12, and the output shaft of deceleration direct-current machine 5.12 is connected transmission through shaft coupling 5.11 with rotating shaft 5.6, and rotating shaft 5.6 lower ends are supported through chock 5.10.

The structure of said first sealed bearing assembly is as shown in Figure 2; It mainly is made up of gland 5.15, acorn nut 5.16, clutch shaft bearing 5.17, clutch shaft bearing seat 5.18 and first felt collar 5.19; Clutch shaft bearing seat 5.18 is fixed on the upper flange lid 5.3; Clutch shaft bearing 5.17 support assemblies are passed through in clutch shaft bearing seat 5.18 in rotating shaft 5.6 upper ends; Clutch shaft bearing 5.17 is equipped with first felt collar 5.19 of sealing usefulness through acorn nut 5.16 lockings and through gland 5.15 sealings between rotating shaft 5.6 and clutch shaft bearing seat 5.18.

The structure of said second sealed bearing assembly is shown in figure 12; It mainly is made up of second chock 5.20, second bearing 5.21, step cover 5.22 and stuffing box 5.24; Second chock 5.20 is fixed on the lower flange lid 5.9; In second chock 5.20, second bearing 5.21 compresses through step cover 5.22 through second bearing, 5.21 support assemblies in rotating shaft 5.6 lower ends, and step cover 5.22 is fixed by bolts on second chock 5.20; Second felt collar 5.23 of sealing usefulness is housed respectively between the rotating shaft 5.6 and second chock 5.20, the step cover 5.22, and stuffing box 5.24 is arranged on step cover 5.22 outsides.

Said ash output hole 5.2 is used to connect the Blowing stopper (not shown), is provided with pressure tap 5.14 on ash output hole 5.2 next doors.Said Blowing stopper can guarantee ash convenyer structure 5 seal insides, thereby reaches the purpose of dry ash, is convenient to packing, and convenient the collection again utilized; Said pressure tap 5.14 is used to connect pressure checking device, can improve security of the present invention and safety like this.

The structure of said admission passage 6 such as Fig. 3, shown in Figure 13, it mainly is made up of component such as blower fan 6.1, vacuum breaker 6.2, first tracheae 6.3, high temperature resistant tracheae 6.8, main tracheae 6.9, suction culvert 6.10, second tracheae 6.11 and the 3rd tracheaes 6.12.

Shown in figure 13, the air outlet of blower fan 6.1 is connected with the blast inlet of vacuum breaker 6.2, and the air outlet of vacuum breaker 6.2 is connected with first tracheae, 6.3 1 ends, and first tracheae, 6.3 the other ends are connected with high temperature resistant tracheae 6.8 1 ends; Said high temperature resistant tracheae 6.8 directly is located in going out in the ash bucket 4 of biomass gasifying furnace; High temperature resistant tracheae 6.8 is double-deck mechanism; It comprises outer tube 6.8a and interior tracheae 6.8b, forms water jacket between outer tube 6.8a and the interior tracheae 6.8b, is connected with the mobile water coolant in the water jacket; Tracheae 6.8b one end is communicated with said first tracheae 6.3 in said, and interior tracheae 6.8b middle part is communicated with main tracheae 6.9, and main tracheae 6.9 is used for air is sent into the zone of combustion below in the biomass gasifying furnace.

Because high temperature resistant tracheae 6.8 directly is located in going out in the ash bucket 4 of biomass gasifying furnace, thereby makes the pipeline of whole admission passage 6 simple, repair and maintenance gets up more convenient.Because high temperature resistant tracheae 6.8 is the double-deck mechanisms that are made up of outer tube 6.8a and interior tracheae 6.8b; Form water jacket between outer tube 6.8a and the interior tracheae 6.8b; Be connected with the mobile water coolant in the water jacket; Water coolant can make the outer tube 6.8a can be not too high by the temperature of high-temperature ash heating, the security and the work-ing life of having improved pipeline.

Realize evenly ventilating in order to make the zone of combustion below; To reach sufficient combustion, purpose that gas production rate is big; Zone of combustion below in the said biomass gasifying furnace also is provided with annular gas pipe, and said high temperature resistant tracheae 6.8 the other ends are communicated with annular gas pipe through second tracheae 6.11, the 3rd tracheae 6.12 successively.

Shown in figure 13, said high temperature resistant tracheae 6.8 1 ends are provided with into water interface, and the other end is provided with the backwater interface, and the water inlet interface is communicated with the cooling basin through suction culvert 6.10, and the backwater interface connects water return pipeline, and suction pump is installed on the water return pipeline.During work, suction pump starts provides suction force, and the water coolant in the cooling basin is extracted out, and water coolant is flowed in the water jacket of high temperature resistant tracheae 6.8, and water coolant cools off outer tube 6.8a.

Shown in figure 13, in order to improve the security of whole admission passage 6, said first tracheae 6.3 is provided with temperature element 6.4, venting 6.5 and pressure measurement interface 6.6, and said temperature element 6.4 can adopt the thermometric copper resistance; Be fitted with the explosive-proof protector film on the said venting 6.5, the explosive-proof protector film preferably adopts aluminium foil; Said pressure measurement interface 6.6 is used to connect conventional pressure instrumentataion.

Shown in figure 13, said first tracheae 6.3 tunnel is provided with steam access tube 6.7, and this steam access tube 6.7 is used to feed steam, and steam can further improve gas production rate and gas heating value with the zone of combustion that drew after the air mixed in the vapourizing furnace.The steam that described steam can adopt biomass gasifying furnace to produce in work, thus realized recycle, improved the efficient of biomass gasifying furnace.

The concrete applicable cases of biomass gasifying furnace is following:

Biomass fuel delivers into body of heater through feeding unit 1 from the opening for feed 2.22 in the middle part of the body of heater, falls into bottom of furnace body, and incomplete combustion forms zone of combustion; Around the zone of combustion is refractory heat-insulating wall body 2.6; Can guarantee the zone of combustion temperature-stable, make burning evenly, gasification fully.The zone of combustion below is grey disc mechanism 3, and biomass fuel is incomplete combustion in body of heater, generates and contains flammable biological fuel gas such as carbon monoxide, hydrogen and low molecular hydrocarbon class gas; These biological fuel gas are upwards discharged via air outlet 2.3; Biological fuel gas has higher temperature, and the pyritous biological fuel gas contacts with the water jacket of upper of furnace body in the process of giving vent to anger, with the water generation heat exchange in the water jacket; The air outlet temperature of biological fuel gas is reduced; The heat radiation of giving vent to anger of high temperature biological fuel gas capable of using on the other hand produces steam, and steam can pass in the admission passage 6 through pipeline, draws the zone of combustion of bottom of furnace body then; Improve gas production rate and gas heating value, remainder steam can supply it to clean the usefulness of heating.

The lime-ash that produces behind the biomass fuel gasifying drops on the rotating grey disc mechanism 3, and when grey disc mechanism 3 rotated, lime-ash was scraped by the hawk 2.15 of scraping of bottom of furnace body, sees through grate 3.21 and drops down onto going out in the ash bucket 4 of below with chassis 3.4.

Ash disc mechanism 3 is arranged on out ash bucket 4 tops and rely on supports running roller 4.3 and support, and grey disc mechanism 3 can smooth rotation; The water seal slotting tool 3.14 of ash disc mechanism 3 bottoms inserts out in the annular seal-water tank on the ash bucket 4, realizes water-lute.

Go out ash bucket 4 bottoms and connect ash convenyer structure 5, can realize out ash manipulation easily.Lime-ash is in the ash inlet 5.8 that goes out ash bucket 4 and fall into housing 5.5 lower ends; Rotating shaft 5.6 is rotated under driving mechanism drives; Flight 5.7 in the rotating shaft 5.6 is upwards carried lime-ash, discharges from ash output hole 5.2 then, and the Blowing stopper at ash output hole 5.2 places can guarantee ash convenyer structure 5 seal insides; Meanwhile, also feed water coolant in the housing 5.5, with the lime-ash cooling, make the dry ash temperature of last output low, be convenient to packing, the convenient collection again utilized; And such recycling that has also realized energy.

Main tracheae 6.9 in the said admission passage 6 inserts in the gas-distributing pipe 3.1 from the lower end of gas-distributing pipe 3.1, and air gets into body of heater zone of combustion below via the ventilation gaps of pore on the gas-distributing pipe 3.1 and blast cap assembly, air is provided for the gasification of biomass fuel.Said high temperature resistant tracheae 6.8 the other ends are communicated with annular gas pipe through second tracheae 6.11, the 3rd tracheae 6.12 successively, make the zone of combustion below realize even ventilation, to reach sufficient combustion, purpose that gas production rate is big.

The structure of said feeding unit 1 such as Figure 14 ~ shown in Figure 19, it mainly is made up of blanking device and feeding conveyor two portions.

The structure of said blanking device such as Figure 14 ~ shown in Figure 19; It mainly is made up of Connection Block 1.1, lower shell 1.2, bell jar valve body 1.3, valve seat 1.4, conical seat 1.5, upper shell 1.6, supporting sealing frame 1.14, first bar 1.16, second bar 1.13, chain cover 1.17, suspension chain 1.7 and bracket institution; Lower shell 1.2 supports through bracket institution; Lower shell 1.2 lower ends are installed with the Connection Block 1.1 that is used to connect feeding conveyor; Lower shell 1.2 upper ends are connected with upper shell 1.6 lower ends through flange, and flange connections is provided with sealing-ring, to guarantee sealing; Fixing along welding in said conical seat edge, 1.5 upper end and upper shell 1.6 lower ends, valve seat 1.4 is installed in conical seat 1.5 lower ends through fastening piece; Supporting sealing frame 1.14 is installed on upper shell 1.6 outer walls, is provided with rotating shaft 1.15 in the supporting sealing frame 1.14; Said first bar, 1.16 one ends are installed in the rotating shaft 1.15 and follow rotating shaft 1.15 and rotate synchronously; First bar, 1.16 the other ends are installed chain cover 1.17; Hang bell jar valve body 1.3 through suspension chain 1.7 on the chain cover 1.17; This bell jar valve body 1.3 matches with said valve seat 1.4, and the control biomass fuel gets into; Said second bar, 1.13 one ends are installed in the rotating shaft 1.15 and follow rotating shaft 1.15 and rotate synchronously, second bar, 1.13 the other end hinge pull bars 1.12.Among the present invention, the tapering of said bell jar valve body 1.3 is preferably 50 ~ 75 degree, can guarantee blanking velocity so on the one hand, prevents the furnace gas guest performer; Be convenient to operator's operation on the other hand.

Said bracket institution mainly is made up of toroidal frame 1.8, link span 1.9, auxilliary bracing frame 1.10, bearing 1.18 and column 1.11; Toroidal frame 1.8 is fixed on lower shell 1.2 periphery walls; Be distributed with two columns 1.11 that are 180 degree symmetric arrangement in lower shell 1.2 both sides; Column 1.11 upper ends welding bearing 1.18, toroidal frame 1.8 is stated in bearing 1.18 rest residences; Said link span 1.9 is fixed on the toroidal frame 1.8, and link span 1.9 is fixed on the auxilliary bracing frame 1.10 through fastening piece, and auxilliary bracing frame 1.10 is fixed on the biomass gasifying furnace top.

The structure of said feeding conveyor such as Figure 18, shown in Figure 19; It mainly is made up of housing 1.19, main drive shaft 1.37, driven shaft 1.32, drive sprocket 1.38, driven sprocket 1.31, chain belt 1.28, scraper plate 1.29, bed of material walking plate 1.30 and driving mechanism; Said housing 1.19 is microscler; Housing 1.19 tops are provided with and are used for the opening for feed that is connected with Connection Block 1.1 lower ends; Said housing 1.19 one ends are installed main drive shaft 1.37 through first bearing assembly, and housing 1.19 the other ends are installed driven shaft 1.32 through second bearing assembly, and said main drive shaft 1.37 is positioned at the two ends of housing 1.19 drive sprocket 1.38 is installed respectively; The two ends that said driven shaft 1.32 is positioned at housing 1.19 are installed respectively between 1.31, two driven sprockets 1.31 of driven sprocket and two drive sprockets 1.38 and respectively are connected transmission through a chain belt 1.28; Be provided with the some scraper plates of being processed by stainless material 1.29 between said two chain belts 1.28, scraper plate 1.29 two ends are connected on two chain belts 1.28 and follow chain belt 1.28 and are synchronized with the movement; Bed of material walking plate 1.30 is horizontally set in the housing 1.19 along the length direction of housing 1.19, said scraper plate 1.29 bases near but do not contact bed of material walking plate 1.30 upper surfaces.

In addition, stablize the good material effect of scraping in order to guarantee that scraper plate 1.29 has, chain belt 1.28 needs that are used to install scraper plate 1.29 keep tensioning state, for this reason, also are provided with the strainer that is used for two chain belts 1.28 of tensioning on the feeding conveyor of the present invention.Like Figure 18, shown in Figure 19, the strainer among the embodiment has two covers, chain belt 1.28 of the corresponding tensioning of every cover strainer; Single cover strainer comprises wheel carrier 1.21 and tightener sprocket 1.22; Said wheel carrier 1.21 is microscler, offers mounting long holes on the wheel carrier 1.21, and wheel carrier 1.21 is fastened on the housing 1.19 through the bolt part that is contained in this mounting long holes; Said tightener sprocket 1.22 is installed in wheel carrier 1.21 upper ends, and tightener sprocket 1.22 is with chain belt 1.28 engagements and with chain belt 1.28 tensionings.When reality is used,, can control the tensioning degree of chain belt 1.28 through the fixed position of adjustment wheel carrier 1.21.

Like Figure 18, shown in Figure 19; In the embodiment of the invention; Said first bearing assembly mainly is made up of preceding gland seat 1.34, preceding gland 1.33, rear pressing cover seat 1.39 and rear pressing cover 1.40, and preceding gland seat 1.34, rear pressing cover seat 1.39 are separately fixed on the front and back sidewall of housing 1.19, before preceding gland 1.33 is contained on the gland seat 1.34; Rear pressing cover 1.40 is contained on the rear pressing cover seat 1.39, and said main drive shaft 1.37 two ends are assemblied in preceding gland 1.33, the rear pressing cover 1.40 through sleeve supporting respectively; Said second bearing assembly comprises that 1.41, two chocks 1.41 of two chocks are separately positioned on the front and back side of housing 1.19, and the two ends of said driven shaft 1.32 are assemblied in two chocks 1.41 through sleeve supporting respectively.

Like Figure 18, shown in Figure 19; Said driving mechanism comprises motor 1.36 and step-down gear 1.35; Step-down gear 1.35 is fixedly mounted on housing 1.19 tops through step-down gear base 1.26, and motor 1.36 is connected with step-down gear 1.35, installing drive sprocket wheel 1.27 on the output shaft of step-down gear 1.35; The shaft extension end of said main drive shaft 1.37 is equipped with driving chain wheel 1.24, and this driving chain wheel 1.24 is connected transmission with said drive sprocket 1.27 through chain 1.25.The commercially available cycloidal planetary gear speed reducer 1.35 of said step-down gear 1.35 preferred employings.

Shown in figure 18; End and bottom near opening for feed one end on the said housing 1.19 are respectively equipped with opening; So that the cleaning work of housing 1.19 inside; When work, the opening of housing 1.19 ends is sealed with sealing-ring through dismountable valve gap 1.23, and the opening of housing 1.19 bottoms is sealed with sealing-ring through dismountable cover plate 1.20.Sealing element among the present invention all is to adopt the asbestos rubber material to process, and described axle sleeve all is to be the basic casting type of bronze.

The concrete applicable cases of feeding unit 1 is following: when biomass fuel is transported to through handling equipment in the upper shell 1.6, when material reaches a certain amount of, blanking signal notifying operation personnel are arranged; Operator upwards promote pull bar 1.12 with hand; Pull bar 1.12 drives second bar, 1.13 rear ends and moves upward, and the rotating shaft 1.15 that second bar, 1.13 front ends drive in the supporting sealing frame 1.14 is rotated synchronously, and rotating shaft 1.15 drives first bar 1.16 when rotating; The chain cover 1.17 of first bar, 1.16 front ends moves downward; Bell jar valve body 1.3 occurs the gap owing to self gravitation descends between bell jar valve body 1.3 outer walls and valve seat 1.4 lower port, and biomass fuel can fall in the feeding conveyor of below from this gap; In 2 ~ 3 seconds, descended material rapidly; Operator spur pull bar 1.12 downwards then, close bell jar valve body 1.3, do not allow furnace gas and stove outer air to gang up.

Feeding conveyor starts; Driving mechanism drives main drive shaft 1.37 and rotates, and the drive sprocket 1.38 on the main drive shaft 1.37 rotates, thereby drives chain belt 1.28 runnings; Chain belt 1.28 drives scraper plate 1.29, and scraper plate 1.29 will be transported in the biomass gasifying furnace from the fallen material of blanking device continuously.

As shown in Figure 3, also be provided with in the body of heater of said biomass gasifying furnace and be used to scraper 7 that fuel charge level height is consistent, through scraping material; Can make and deliver into the intravital material of stove to remain the charge level height consistent; The aerogenesis that can guarantee to burn is even, is not prone to naked light, and is safe and reliable; Stablize furnace pressure, improve gas production rate.The structure of said scraper 7 is concrete like Figure 20, shown in Figure 21; Its mainly by transmission shaft 7.12, scrape materials and parts and driving mechanism is formed; Transmission shaft 7.12 inserts in the body of heater downwards by the furnace roof center; Transmission shaft 7.12 upper ends are supported through supporting component and are installed, and transmission shaft 7.12 relies on the drive mechanism rotation, and the said charging tray 7.13 of scraping is fixed on transmission shaft 7.12 lower ends.

The structure of said supporting component such as Figure 20, shown in Figure 21; It mainly is made up of mount pad 7.11, thrust ball bearing 7.10, deep groove ball bearing 7.8 and gland 7.7; Mount pad 7.11 passes through screw retention on furnace roof; Clamped paronite 7.19 between mount pad 7.11 and the furnace roof, to improve sealing property; The axle journal of transmission shaft 7.12 upper ends is contained in the centre hole of mount pad 7.11; Thrust ball bearing 7.10 is sleeved on the axle journal and through nut 7.9 and locks; Two seat rings of thrust ball bearing 7.10 contact respectively and support mount pad 7.11 and nut 7.9, and thrust ball bearing 7.10 is mainly used in the thrust load of carrying transmission shaft 7.12; Deep groove ball bearing 7.8 is sleeved on the axle journal, and the inside and outside circle of deep groove ball bearing 7.8 contacts journal and mount pad 7.11 respectively, and deep groove ball bearing 7.8 is mainly used in the radial loading that carries transmission shaft 7.12; Gland 7.7 is installed on the mount pad 7.11, and gland 7.7 is encapsulated in thrust ball bearing 7.10 and deep groove ball bearing 7.8 in the centre hole of mount pad 7.11.In addition, between said mount pad 7.11 and the transmission shaft 7.12 sealing-ring 7.20 is housed also; Also be provided with the zerk that is used for to its centre hole filling lubricating oil on the said mount pad 7.11.

Shown in figure 20; Said driving mechanism mainly is made up of motor reducer 7.1, minor sprocket 7.2, hinge wheel 7.5 and chain 7.4; Motor reducer 7.1 is supported and fixed on the furnace roof through bearing 7.3; Minor sprocket 7.2 is installed on the output shaft of motor reducer 7.1, and hinge wheel 7.5 is installed in said transmission shaft 7.12 upper ends, is connected transmission through chain 7.4 between hinge wheel 7.5 and the minor sprocket 7.2.In order to improve safety performance of the present invention, said transmission shaft 7.12 upper end suit drive sleeve 7.6 are also passed through flat key connection transmission, and hinge wheel 7.5 is installed on the drive sleeve 7.6 through shearing pin.Like this, can't rotate when transmission shaft 7.12 is obstructed, during motor reducer 7.1 overloads, shearing pin is cut off rapidly, has guaranteed whole plant safety.

Because transmission shaft 7.12 need stretch into certain-length in the body of heater; Situation in actual use can shake; And axial stretching can appear owing to being heated in transmission shaft 7.12; So the present invention has added a cover and has been used to keep the stable supplemental support mechanism of transmission shaft 7.12 on transmission shaft 7.12.The structure of said supplemental support mechanism is shown in figure 20; It mainly is made up of guide pin bushing 7.14, lining 7.15, platen 7.16, connecting rod 7.17 and supporting seat 7.18; Guide pin bushing 7.14 is fixed on the transmission shaft 7.12, and platen 7.16 is assemblied on the guide pin bushing 7.14 through lining 7.15 and can freely rotating; Said platen 7.16 peripheries are provided with at least three along its hinged-support that circumferentially is uniformly distributed with, and an end of at least three connecting rods 7.17 is hinged on hinged-support, the other end hinge supporting seat 7.18 of at least three connecting rods 7.17, and supporting seat 7.18 is supported on the inboard wall of furnace body surface.

Said structure of scraping charging tray 7.13 is shown in figure 20; It mainly is made up of the scraping rod 7.13b that center hub 7.13a and Duo Gen are connected on the center hub 7.13a; Center hub 7.13a is fixed on transmission shaft 7.12 lower ends through fastening piece, many scraping rod 7.13b uniform distribution along the circumferential direction on center hub 7.13a.In the illustrated embodiment, said scraping rod 7.13b has eight, and eight end is fixed on the center hub 7.13a, constitutes the rice font structure.

Said cyclone dust collector 8 is used for removing the contained impurity of biological fuel gas, dust and tar and cools off biological fuel gas, so that the follow-up use of combustion gas.The structure of said cyclone dust collector 8 such as Figure 22, shown in Figure 23; It mainly is made up of support 8.1, primary cyclone 8.2 and secondary cyclone 8.3; Said primary cyclone 8.2, secondary cyclone 8.3 support through support 8.1; The blast pipe 8.4 of primary cyclone 8.2 is used to feed pending combustion gas; The exhaust duct 8.5 of primary cyclone 8.2 links to each other with the blast pipe 8.4 of secondary cyclone 8.3 through bridge piece 8.6, and the exhaust duct 8.5 of secondary cyclone 8.3 is used for the combustion gas after handling is transported to the next stage treatment facility.

Like Fig. 1, shown in Figure 2, in the embodiment of the invention, said primary cyclone 8.2 is identical with the structure of secondary cyclone 8.3; They include blast pipe 8.4, exhaust duct 8.5 and cylindrical shell 8.8, and cylindrical shell 8.8 upper semisections are cylindrical, and lower semisection is conical; Blast pipe 8.4 is arranged on the cylindrical shell 8.8; Air-flow is the tangential from the direction that blast pipe 8.4 gets into, exhaust duct 8.5 coaxial being arranged in the cylindrical shell 8.8, and exhaust duct 8.5 bottoms are shrunk to taper shape downwards gradually; The tube wall of exhaust duct 8.5 is provided with the longer tuyere 8.9 of multiple tracks along its length direction; Said longer tuyere 8.9 preferably is set to single deflection grille, and said multiple tracks longer tuyere 8.9 circumferentially is uniformly distributed with in the tube wall upper edge of exhaust duct 8.5, and exhaust duct 8.5 lower end tube walls are provided with a plurality of along its wind hole 8.10 that circumferentially is uniformly distributed with.The biomass fuel entraining air stream is spinned shape when rotatablely moving in cylindrical shell 8.8 inwalls of cyclonic separator and the space between exhaust duct 8.5 outer walls; Portion gas in the air-flow can get into exhaust duct 8.5 from longer tuyere 8.9; And dust impurity can't get into, thereby has further improved the separating effect of cyclonic separator.

As shown in Figure 1, be provided with a sleeve body 8.7 that shape is suitable with it outside the said cylindrical shell 8.8, form water jacket between sleeve body 8.7 inwalls and cylindrical shell 8.8 outer walls, the water jacket bottom is provided with water-in, and water jacket top is provided with water outlet.During use, the water inlet of water jacket lower end, the upper end water outlet, cold water carries out heat exchange with the biological fuel gas that gets in the cyclonic separator, and biological fuel gas is cooled off.In addition; Said cylindrical shell 8.8 lower ends also are connected with a conic tube 8.11, and the bore of conic tube 8.11 upper ends is greater than the bore of cylindrical shell 8.8 lower ends, when air-flow when the axle center rotates up; The dust impurity of above-mentioned structure in can barrier air further improves dust removing effects.Said support 8.1 is welded by channel-section steel, and the leg 8.1a lower end of support 8.1 is welded with the steel plate 8.1b that keeps support 8.1 stable.

The concrete applicable cases of cyclone dust collector 8 is following: the biological fuel gas that contains impurity, dust and tar at first gets in the primary cyclone 8.2 from blast pipe 8.4 tangentials of primary cyclone 8.2; The biomass fuel entraining air stream shape of in cylindrical shell 8.8 inwalls of primary cyclone 8.2 and the space between exhaust duct 8.5 outer walls, spinning rotatablely moves; The air-flow that is rotated down is outer vortex; Outer vortex is transferred upwards after arriving cylindrical shell 8.8 bottoms; Rotate up along the axle center, after exhaust duct 8.5 is discharged, the air-flow that this strand rotates up is inside vortex.When air-flow rotates; Cylindrical shell 8.8 inwalls that under centrifugal action, are thrown toward primary cyclone 8.2 of the impurity in the biological fuel gas, dust and tar; And the promotion and the action of gravity lower edge inwall of vortex fall to flowing out outside, discharge via ash output hole.

Biological fuel gas after primary cyclone 8.2 is handled is upwards discharged from its exhaust duct 8.5, gets in the secondary cyclone 8.3 tangential through bridge piece 8.6 again, carries out secondary treatment through secondary cyclone 8.3, and principle is the same.

After primary cyclone 8.2 and secondary cyclone 8.3 processing, the impurity that contains in the biological fuel gas, dust and tar are promptly removed efficiently, and the while biological fuel gas also obtains cooling off, so that the follow-up use of biological fuel gas.Certainly, it is understandable that the present invention can also continue the cyclonic separator of connecting, to reach more excellent treatment effect.

In addition, also be provided with the one-level tubular type inter cooler 9, electrical tar precipitator 10 and the secondary tubular type inter cooler 11 that are used for further purifying and cooling off biological fuel gas in the fuel gas generating system of the present invention, said one-level tubular type inter cooler 9 can cool off high-temperature fuel gas with secondary tubular type inter cooler 11 quickly and evenly; Stopping state can not take place; Clean and maintenance is convenient, and can the ash disposal decoking in a cold process, and collection bucket is arranged at the bottom; Tar and dust are collected, can in process of cooling, do not formed sewage.Said electrical tar precipitator 10 can efficiently be caught the tar of removing in the biological fuel gas, improves the degree of purification of biological fuel gas greatly.

The structure of said one-level tubular type inter cooler 9 such as Figure 24, shown in Figure 25, it mainly is made up of component such as bracing frame 9.1, main valve 9.2, water inlet pipe 9.3, water inlet arm 9.4, a valve 9.5, water-cooled case 9.6, relief pipe 9.7, decompression hand valve 9.8, the housing 9.10 of giving vent to anger, exit branch 9.11, funnel 9.12, rising pipe 9.13, air intake casing 9.15, aggregate pipe 9.16, collection bucket 9.17, first valve 9.18, drainage conduit 9.19 and second valves 9.20.

Said water-cooled case 9.6 supports through bracing frame 9.1; Water-cooled case 9.6 is square; Have six, these six water-cooled casees, 9.6 range upon range of placements are tightly connected between the casing 9.6a of all water-cooled casees 9.6; The casing 9.6a bottom of bottom water-cooled case 9.6 is equipped with the air intake casing 9.15 that is communicated with inlet pipe 9.14, and topmost the casing 9.6a top of water-cooled case 9.6 is equipped with the housing 9.10 of giving vent to anger; The both sides of said casing 9.6a front surface seal respectively installs water inlet box 9.6b and water outlet box 9.6c; Be provided with ten serpentine tube 9.6d in the casing 9.6a in the different heights staggered arrangement; The two ends of ten serpentine tube 9.6d are communicated with said water inlet box 9.6b and water outlet box 9.6c respectively, and water coolant can circulate in serpentine tube 9.6d from bottom to top; Said water inlet pipe 9.3 is arranged in bracing frame 9.1 and water-cooled case 9.6 1 sides, and the water inlet box 9.6b bottom on each water-cooled case 9.6 is communicated with water inlet pipe 9.3 through water inlet arm 9.4, on each water inlet arm 9.4 valve 9.5 is installed all; Rising pipe 9.13 is arranged in bracing frame 9.1 and water-cooled case 9.6 opposite sides; An exit branch 9.11 is all installed on water outlet box 9.6c top on each water-cooled case 9.6; The water outlet below of each exit branch 9.11 is provided with a funnel 9.12, and this funnel 9.12 is communicated with said rising pipe 9.13.

Shown in figure 24, in order to improve security of the present invention, the said housing 9.10 of giving vent to anger is provided with venting 9.9, and relief pipe 9.7 is installed on the venting 9.9, and decompression hand valve 9.8 is installed on the relief pipe 9.7.

Shown in figure 24, the bottom of said air intake casing 9.15 is connected with aggregate pipe 9.16, and aggregate pipe 9.16 lower ends connect collection bucket 9.17, and first valve 9.18 open in usual is installed on the aggregate pipe 9.16; Said collection bucket 9.17 bottoms are equipped with drainage conduit 9.19, and second valve 9.20 of normally closed type is installed on the drainage conduit 9.19.

During concrete the application, need the refrigerative biological fuel gas to get in the air intake casing 9.15 from inlet pipe 9.14, each water-cooled case 9.6 is passed through in circulation successively from bottom to top; At this moment; Main valve 9.2 on the water inlet pipe 9.3 is opened; Water coolant flows into water inlet pipe 9.3, gets in each water-cooled case 9.6 through each water inlet arm 9.4, and the circulation style that water coolant goes out on advancing by one-in-and-one-out, down in many serpentine tube 9.6d flows; Flow out and fall in the funnel 9.12 from exit branch 9.11 at last, flow to rising pipe 9.13 by funnel 9.12; Water coolant carries out heat exchange with from bottom to top biological fuel gas in the process of circulation, has realized between water coldly, reaches even cooling, cools off fast, the purpose of gradient cooling.In a cold process, impurity such as the dust in the biological fuel gas, tar also can be by effective removal, and the aggregate pipe 9.16 of bottom can be collected tar and dust, can in process of cooling, not form sewage.

What said electrical tar precipitator 10 adopted is commercially available conventional products.The structure of said secondary tubular type inter cooler 11 is identical with one-level tubular type inter cooler 9, so locate to repeat no more.

In actual production process; Combustion gas filtering and purifying 12 is after work for some time; Usually need to shut down cleaning, carry out continuously, enhance productivity in order to guarantee to produce; The present invention has designed combustion gas filtering and purifying 12 shown in Figure 26, and it mainly is made up of air inlet pants pipe 12.1, valve 12.2, first gas filter 12.3, second gas filter 12.4 and the pants pipe 12.5 of giving vent to anger.

As shown in Figure 1, the person in charge of said air inlet pants pipe 12.1 is used for air inlet, and the person in charge of the pants pipe 12.5 of giving vent to anger is used for exhaust; An arm of air inlet pants pipe 12.1 is connected with the inlet mouth of first gas filter 12.3 through a valve 12.2, and the air outlet of first gas filter 12.3 is through one pipe coupling of another valve 12.2 with the pants pipe 12.5 of giving vent to anger; Another arm of air inlet pants pipe 12.1 is connected with the inlet mouth of second gas filter 12.4 through a valve 12.2, and the air outlet of second gas filter 12.4 is through another valve 12.2 another pipe coupling with the pants pipe 12.5 of giving vent to anger.Preferably, said valve 12.2 adopts Hand-operated butterfly valve.The person in charge of described air inlet pants pipe 12.1, the pants pipe 12.5 of giving vent to anger is identical with the caliber of arm.Said first gas filter 12.3, second gas filter 12.4 can adopt commercially available matured product.

During concrete the application; Air inlet pants pipe 12.1 is in closing condition with pants pipe 12.5 one side branch of giving vent to anger; The biological fuel gas that contains impurity, dust and a small amount of tar gets in the person in charge of air inlet pants pipe 12.1; Filter the back from a side branch wherein through first gas filter 12.3 and get into the pants pipe 12.5 of giving vent to anger, then from person in charge's discharge of the pants pipe 12.5 of giving vent to anger.

When first gas filter 12.3 uses for some time to clear up; Close the valve 12.2 at first gas filter, 12.3 two ends; Open the valve 12.2 at second gas filter, 12.4 two ends, the biological fuel gas that contains impurity, dust and a small amount of tar can carry out filtration, purification through second gas filter 12.4 to be handled, and first gas filter 12.3 can be cleared up upkeep operation synchronously; So intersect and use first gas filter 12.3 and second gas filter 12.4; Just can under not blowing out situation, accomplish the filtration unit cleaning operation, guarantee to produce and carry out continuously, enhance productivity.

Said one-level moisture separator 13 can efficiently be removed moisture contained in the biological fuel gas and cool off biological fuel gas, so that the follow-up use of biological fuel gas.The structure of said one-level moisture separator 13 is as 27, shown in Figure 28, and it mainly is made up of cyclonic separator 13.1, support 13.2, pipeline 13.3, water tank 13.4 and upflow tube 13.5.Said cyclonic separator 13.1 supports through support 13.2; The blast pipe 13.1a of cyclonic separator 13.1 is used to feed the biological fuel gas that contains moisture; The exhaust duct 13.1b of cyclonic separator 13.1 is used for the biological fuel gas behind the separation moisture is transported to the next stage treatment facility; The liquid outlet of cyclonic separator 13.1 bottoms is connected with pipeline 13.3, and these pipeline 13.3 lower ends are stretched in the water tank 13.4.

Said cyclonic separator 1 mainly is made up of blast pipe 13.1a, exhaust duct 13.1b and cylindrical shell 13.1c; Cylindrical shell 13.1c upper semisection is cylindrical, and lower semisection is conical, and blast pipe 13.1a is arranged on the cylindrical shell 13.1c; Air-flow is the tangential from the direction that blast pipe 13.1a gets into; Exhaust duct 13.1b is coaxial to be arranged in the cylindrical shell 13.1c, and exhaust duct 13.1b bottom is shrunk to taper shape downwards gradually, and the tube wall of exhaust duct 13.1b is provided with the longer tuyere 13.1e of multiple tracks along its length direction; Said multiple tracks longer tuyere 13.1e circumferentially is uniformly distributed with in the tube wall upper edge of exhaust duct 13.1b, and exhaust duct 13.1b lower end tube wall is provided with a plurality of along wind hole 13.1f that it circumferentially is uniformly distributed with.Said longer tuyere 13.1e preferably is set to single deflection grille; The biomass fuel entraining air stream is spinned shape when rotatablely moving in the cylindrical shell 13.1c inwall of cyclonic separator and the space between the exhaust duct 13.1b outer wall; Portion gas in the air-flow can get into exhaust duct 13.1b from longer tuyere 13.1e; And moisture impurity etc. can't get into, thereby have further improved the separating effect of cyclonic separator 13.1.

Said support 13.2 is welded by channel-section steel, and the leg 13.2a lower end of support 13.2 is welded with the steel plate 13.2b that keeps support 13.2 stable.

During concrete the application; The biological fuel gas that contains moisture gets in the cyclonic separator 13.1 via blast pipe 13.1a tangential, and the shape of spinning in the space of biomass fuel entraining air stream between cylindrical shell 13.1c inwall and exhaust duct 13.1b outer wall rotatablely moves, and the air-flow that is rotated down is outer vortex; Outer vortex arrives back, cylindrical shell 13.1c bottom then makes progress; Rotate up along the axle center, after exhaust duct 13.1b discharges, the air-flow that this strand rotates up is inside vortex.When air-flow rotated, the moisture in the biological fuel gas was thrown toward the cylindrical shell 13.1c inwall of cyclonic separator 13.1 under centrifugal action, and the promotion and the action of gravity lower edge inwall of vortex fall to flowing out outside, flow in the water tank 13.4 via pipeline 13.3.So just removed the moisture in the biological fuel gas efficiently, biological fuel gas also obtains cooling simultaneously, so that the follow-up use of biological fuel gas.

Because the moisture in the biological fuel gas constantly is collected in the water tank 13.4; Water in the water tank 13.4 is cumulative; Carry out smoothly for what guarantee to produce; It is shown in Figure 1 that the present invention is provided with upflow tube 13.5 on the top of water tank 13.4, and water is collected when a certain amount of and flowed out through upflow tube 13.5, thereby can the liquid levels in the water tank 13.4 be maintained certain altitude all the time.

Because the structure of said secondary moisture separator 14 is identical with one-level moisture separator 13, so locate do not giving unnecessary details.

Said gas transmission gas storage piping system comprises connecting tube, roots blower 15, smoke evacuation purification of combustion device 16 and coal gas surge tank 17; The outlet of said secondary moisture separator 14 is connected respectively with smoke evacuation purification of combustion device 16, coal gas surge tank 17 through connecting tube; Said roots blower 15 is arranged on the connecting tube; Be used to provide carrying capacity, said smoke evacuation purification of combustion device 16 is used for removing the detrimental impurity composition of discharging gas, and said coal gas surge tank 17 is used for temporary biological fuel gas.

During biomass gasifying furnace point of beginning stove, before ordinary production, must the air in the stove and in the pipeline be driven away, be called for short emptying.Can guarantee the quality of final combustion gas like this, protect equipment simultaneously.In this emptying phase process; Contain grey cigarette in the expellant gas and a spot of air is had the foreign gas of pollution, smoke evacuation purification of combustion device 16 of the present invention is exactly to contain grey cigarette and a spot of foreign gas that air is had pollution in order to remove to discharge in the gas.Structure such as Figure 29, shown in Figure 30 of smoke evacuation purification of combustion device 16, its mainly by blower fan 16.1, air intake pipeline 16.2, supporting tube 16.3, bridge piece 16.4, nozzles with injector 16.5, second pipe fitting 16.6, down high temperature steel dividing plate 16.7, refractory masses 16.8, go up high temperature steel dividing plate 16.9, go up flat flame burner 16.10, component such as burner block 16.11, first pipe fitting 16.12, cigarette pipe connecting 16.13, chimney pipe 16.14, support bar 16.15, stack cover 16.16 and following flat flame burner 16.17 form.

Like Figure 29, shown in Figure 30, blower fan 16.1 connects air intake pipeline 16.2, and the burning purification pipe supports through supporting tube 16.3, and the lower end import of burning purification pipe is connected with foreign gas access tube 16.19, is used to feed pending foreign gas; The upper end outlet of burning purification pipe connects stovepipe 16.14, is provided with stack cover 16.16 directly over the stovepipe 16.14, and stack cover 16.16 is fixed on the stovepipe 16.14 through support bar 16.15; Said burning purification pipe inwall is provided with refractory masses 16.8; Following flat flame burner 16.17 is arranged on a side of burning purification pipe bottom; Last flat flame burner 16.10 is arranged on the opposite side on burning purification pipe top; Following flat flame burner 16.17, be provided with burner block 16.11 around going up flat flame burner 16.10; Following flat flame burner 16.17, the air of going up flat flame burner 16.10 are communicated with air intake pipeline 16.2 respectively, and the fuel gas inlet of following flat flame burner 16.17, last flat flame burner 16.10 is communicated with gas line 16.19 respectively; Following high temperature steel dividing plate 16.7 is arranged on the bottom in the burning purification pipe, and under the flat flame burner 16.17, the side near following flat flame burner 16.17 on the following high temperature steel dividing plate 16.7 is provided with ventilating pit under being positioned at; Last high temperature steel dividing plate 16.9 is arranged on the middle part in the burning purification pipe, is positioned on the following flat flame burner 16.17, goes up under the flat flame burner 16.10, and the side near last flat flame burner 16.10 on the last high temperature steel dividing plate 16.9 is provided with ventilating pit.

Said high temperature steel dividing plate 16.7 down can stop pending foreign gas with last high temperature steel dividing plate 16.9; Make foreign gas in the burning purification pipe, stop the more time; Ventilating pit on the following high temperature steel dividing plate 16.7 is near following flat flame burner 16.17; Ventilating pit on the last high temperature steel dividing plate 16.9 is near last flat flame burner 16.10, can make like this foreign gas when circulation more near burner, make the foreign gas burning purify more abundant.Can add according to field condition on the said stovepipe 16.14 and protect frame or stay cord.

Shown in figure 29; Burning purification pipe among the embodiment mainly is made up of first pipe fitting 16.12 and second pipe fitting 16.6 that connect through flange; The upper end of first pipe fitting 16.12 is conical, and its top is provided with pipe connecting 16.13, and pipe connecting 16.13 upper ends are connected with said stovepipe 16.14; Second pipe fitting 16.6 supports through supporting tube 16.3, and the lower end of second pipe fitting 16.6 is conical, and its bottom is provided with bridge piece 16.4, and bridge piece 16.4 is connected with foreign gas access tube 16.19.

Shown in figure 29, said burning purification pipe bottom is provided with the nozzles with injector 16.5 that spout makes progress, and nozzles with injector 16.5 is near following flat flame burner 16.17 one sides on the burning purification pipe, and nozzles with injector 16.5 is communicated with said air intake pipeline 16.2.When burning purifies foreign gas, stop tempering phenomenon, for this reason, the present invention has designed nozzles with injector 16.5, through from nozzles with injector 16.5 ejection air-flows, guarantees the interior flame of burning purification pipe upwards, the security that has improved equipment; In addition, in order to ensure the suction force of chimney, the ratio that the height of chimney need design usually is higher; And nozzles with injector 16.5 of the present invention can also provide suction force; Can guarantee to reduce the design height of chimney greatly under the condition that suction force meets the demands, reduce equipment cost.

In addition, clamped one deck Stainless Steel Wire screen cloth between said burning purification pipe lower end import and the foreign gas access tube 16.19, the Stainless Steel Wire screen cloth also can prevent tempering.The invention provides double insurance thereby give.Preferably, the silk footpath of said Stainless Steel Wire screen cloth is 0.6mm, and the order number is 10 orders.

Among the present invention, the composition of said refractory masses 16.8 preferably adopts refractory fibre, like aluminosilicate property refractory fibre, polycrystalline alumina fiber, mullite fiber or Zirconium oxide fibre etc.

The concrete applicable cases of smoke evacuation purification of combustion device 16 is following: in the emptying process, the foreign gas that needs to handle gets in the burning purification pipe via foreign gas access tube 16.18, bridge piece 16.4.Blower fan 16.1 starts simultaneously; Air is provided for respectively following flat flame burner 16.17, last flat flame burner 16.10 and nozzles with injector 16.5; Following flat flame burner 16.17, go up flat flame burner 16.10 and introduce combustion gas, following flat flame burner 16.17, go up flat flame burner 16.10 igniting through gas line 16.19.The foreign gas elder generation that feeds in the purification pipe that burns upwards circulates from the ventilating pit on the following high temperature steel dividing plate 16.7; Wherein a part of impurity component is by flat flame burner 16.17 burning purifications down; And then the ventilating pit from last high temperature steel dividing plate 16.9 upwards circulates; A part of in addition impurity component is purified by last flat flame burner 16.10 burnings, is expelled to atmosphere via pipe connecting 16.13 and stovepipe 16.14 at last; Said nozzles with injector 16.5 plays the effect that prevents tempering and suction force is provided in the process of circulation of foreign gas.

Claims

1. biomass fuel gas generating system; It is characterized in that: comprising: the feeding unit (1), biomass gasifying furnace, after-treatment system and the gas transmission gas storage piping system that are connected successively by combustion gas generation and processing sequence; Said biomass gasifying furnace has fuel inlet and gas outlet; The burning import is connected with feeding unit (1), and gas outlet is communicated with after-treatment system through connecting tube; Said after-treatment system comprises cyclone dust collector (8), one-level tubular type inter cooler (9), electrical tar precipitator (10), secondary tubular type inter cooler (11), filtering and purifying (12), one-level moisture separator (13) and secondary moisture separator (14); The import of cyclone dust collector (8) is connected with the gas outlet of biomass gasifying furnace through connecting tube; The outlet of cyclone dust collector (8) is divided into two branch roads; Be connected with the import of two one-level tubular type inter coolers (9) through connecting tube respectively; The outlet of these two one-level tubular type inter coolers (9) is connected with the import of same electrical tar precipitator (10) through connecting tube respectively; The outlet of said electrical tar precipitator (10) is divided into two branch roads; Be connected with the import of two secondary tubular type inter coolers (11) through connecting tube respectively; The outlet of these two secondary tubular type inter coolers (11) is connected with the import of filtering and purifying (12) through connecting tube respectively again; The outlet of said filtering and purifying (12) is connected with the import of one-level moisture separator (13) through connecting tube, and the outlet of this one-level moisture separator (13) is connected with the import of secondary moisture separator (14) through connecting tube, and the outlet of this secondary moisture separator (14) connects gas transmission gas storage piping system again.

2. biomass fuel gas generating system as claimed in claim 1 is characterized in that: said biomass gasifying furnace comprises furnace binding (2), grey disc mechanism (3), goes out ash bucket (4), ash convenyer structure (5) and admission passage (6);

Said furnace binding (2) comprises urceolus (2.4), inner core (2.2), annular flange (2.1), first ring flat-plate (2.9), second ring flat-plate (2.11) ash-stopping ring (2.16), scrapes hawk (2.15) and water seal circle (2.14); Inner core (2.2) places in upper part of urceolus (2.4); Inner core (2.2) edge, upper end and edge, urceolus (2.4) upper end are through annular flange (2.1) welded seal; Pass through first ring flat-plate (2.9) welded seal between inner core (2.2) edge, lower end and urceolus (2.4) inwall; Form water jacket between inner core (2.2) outer wall and urceolus (2.4) inwall, on urceolus (2.4) wall, be provided with corresponding to the water-in (2.18) of water jacket bottom with corresponding to the water return outlet (2.19) on water jacket top; Lower part inner wall surface of said urceolus (2.4) is provided with refractory heat-insulating wall body (2.6); Said second ring flat-plate (2.11) is weldingly fixed on urceolus (2.4) edge, lower end, ash-stopping ring (2.16) and the coaxial setting of water seal circle (2.14), and be welded on second ring flat-plate (2.11) bottom, and ash-stopping ring (2.16) is interior, and water seal circle (2.14) is outside; Polylith scrapes that hawk (2.15) is welded on ash-stopping ring (2.16) inwall and along the circumferential direction uniform distribution of ash-stopping ring (2.16); Said body of heater middle part is provided with the opening for feed (2.22) that is used to add biomass fuel; Said opening for feed (2.22) communicates with inner core (2.2) inside; Said upper of furnace body is provided with the air outlet (2.3) that is used to import biological fuel gas, and said air outlet (2.3) communicate with inner core (2.2) inside;

Said grey disc mechanism (3) is arranged under the furnace binding (2), and grey disc mechanism (3) comprises water seal inner ring (3.7), water seal outer ring (3.8), base plate (3.15), chassis (3.4), gas-distributing pipe (3.1), blast cap assembly, keeps off grey cutter (3.16), water seal slotting tool (3.14), center ring flat-plate (3.18) and grate (3.21); Water seal inner ring (3.7) and the coaxial setting in water seal outer ring (3.8); Be welded jointly on base plate (3.15) upper surface; Form annular seal-water tank between water seal inner ring (3.7) and water seal outer ring (3.8), the water seal circle (2.14) of said bottom of furnace body inserts downwards in this annular seal-water tank; The inwall of said water seal inner ring (3.7) is provided with a plurality of along the circumferential direction equally distributed bearings (3.17); Chassis (3.4) is shelved on bearing (3.17) and upward and with bearing pin (3.5) is connected with bearing (3.17), and grate (3.21) is placed on the chassis (3.4); The center on said chassis (3.4) is provided with through hole, and gas-distributing pipe (3.1) is located in this through hole, gas-distributing pipe (3.1) top closure, and the perisporium on gas-distributing pipe (3.1) top is provided with pore; Said blast cap assembly is sleeved on gas-distributing pipe (3.1) and goes up and rely on center ring flat-plate (3.18) to support, and center ring flat-plate (3.18) is fixed on the chassis (3.4), and the ventilation gaps in the blast cap assembly communicates with the pore on the gas-distributing pipe (3.1); Annular keeps off grey cutter (3.16) and the coaxial setting of annular water seal slotting tool (3.14), is welded on respectively on the lower surface of said base plate (3.15); The sidewall on top, said water seal outer ring (3.8) is provided with upflow tube (3.6); Under upflow tube (3.6) outlet, be provided with funnel (3.9), the water that grey disc mechanism (3) is gone up in the annular seal-water tank can go out in the annular seal-water tank on the ash bucket (4) the inflow below downwards through funnel (3.9);

Saidly go out ash bucket (4) and be arranged under the grey disc mechanism (3); Go out ash bucket (4) and comprise urceolus (4.8), inner core (4.7), flange (4.5) and flanged pipe (4.6); Urceolus (4.8) and inner core (4.7) are pyramidal structure; Their edge, upper end is weldingly fixed on flange (4.5) lower surface, is filled with heat-insulation and heat-preservation material (4.10) between urceolus (4.8) and the inner core (4.7), and inner core (4.7) lower ending opening is ash output hole (4.12); Both sides on said urceolus (4.8) and the inner core (4.7) are respectively arranged with flanged pipe (4.6), and the axle center of both sides flanged pipe (4.6) is on same axis, and flanged pipe (4.6) is used for admission passage (6) to be passed through; Be welded with inner ring (4.1) and outer ring (4.2) of coaxial setting on the upper surface of said flange (4.5); Form annular seal-water tank between inner ring (4.1) and outer ring (4.2); The water seal slotting tool (3.14) that this annular seal-water tank is used on the grey disc mechanism (3) with the top cooperates, and realizes water-lute; On the annular seal-water tank sidewall, be provided with return water pipe (4.13); In annular seal-water tank, be provided with a plurality of along the circumferential direction equally distributed support running rollers (4.3); Said support running roller (4.3) supports through its base (4.4), is used for the grey disc mechanism (3) of rest top;

Said ash convenyer structure (5) is arranged on out ash bucket (4) below, and ash convenyer structure (5) comprises bearing (5.1), housing (5.5), upper flange lid (5.3), lower flange lid (5.9), rotating shaft (5.6), first sealed bearing assembly, second sealed bearing assembly and driving mechanism; Said bearing (5.1) has an inclination mounting face; Housing (5.5) is installed on the inclination mounting face; Housing (5.5) lower end is provided with opening ash inlet (5.8) up; This ash inlet (5.8) is connected with the said ash output hole (4.12) that goes out ash bucket (4), and housing (5.5) upper end is provided with downward opening ash output hole (5.2); Said housing (5.5) is double-deck water jacket housing (5.5), and housing (5.5) bottom, lower end is provided with water-in (5.13), and top, housing (5.5) upper end is provided with water outlet (5.4); Said housing (5.5) upper end is equipped with upper flange lid (5.3), the lower end is equipped with lower flange lid (5.9); Rotating shaft (5.6) is arranged in the housing (5.5); Rotating shaft (5.6) upper end is supported through first sealed bearing assembly and is installed on the upper flange lid (5.3); Rotating shaft (5.6) lower end is supported through second sealed bearing assembly and is installed on the lower flange lid (5.9); Rotating shaft (5.6) drives through driving mechanism and rotates, and rotating shaft (5.6) is provided with the flight (5.7) that is used for ash-slag delivery;

Said admission passage (6) comprises blower fan (6.1), vacuum breaker (6.2), first tracheae (6.3), high temperature resistant tracheae (6.8) and main tracheae (6.9); The air outlet of blower fan (6.1) is connected with the blast inlet of vacuum breaker (6.2), and the air outlet of vacuum breaker (6.2) is connected with first tracheae (6.3) one ends, and first tracheae (6.3) the other end is connected with high temperature resistant tracheae (6.8) one ends; Said high temperature resistant tracheae (6.8) directly is located in going out in the ash bucket (4) of biomass gasifying furnace; High temperature resistant tracheae (6.8) is double-deck mechanism; It comprises outer tube (6.8a) and interior tracheae (6.8b); Form water jacket between outer tube (6.8a) and the interior tracheae (6.8b), be connected with the mobile water coolant in the water jacket; Tracheae (6.8b) end is communicated with said first tracheae (6.3) in said; Interior tracheae (6.8b) middle part is communicated with main tracheae (6.9); Main tracheae (6.9) upwards insert in the grey disc mechanism (3) gas-distributing pipe (3.1) in, be used for air is sent into the zone of combustion below in the biomass gasifying furnace.

3. biomass fuel gas generating system as claimed in claim 1; It is characterized in that: in the said furnace binding (2); Bottom of furnace body is equipped with many through pipe support (2.20) and is used for the heat-resisting thin permeability cell (2.21) of heeling-in in zone of combustion; Described many heat-resisting thin permeability cells (2.21) are all upwards uniform distribution in a plurality of circumference upper edge; The pipe top of heat-resisting thin permeability cell (2.21) is provided with tapered cap, and the tube wall of heat-resisting thin permeability cell (2.21) is provided with a plurality of gas-pervious apertures in zone of combustion that are used for; The said hawk (2.15) of scraping is for elongated plates, and the length direction of scraping hawk (2.15) along ash-stopping ring (2.16) is radially scraped the width of hawk (2.15) and the angle of 3 ° of vertical direction formation; Said body of heater is provided with the flare type joint (2.7) that is connected with inner core (2.2) inside; Be provided with an enforced loop plane co-axial with it (2.17) in the said ash-stopping ring (2.16), the inner that said polylith is scraped hawk (2.15) all is weldingly fixed on the enforced loop plane (2.17); Be provided with stiffening plate (2.5) between said inner core (2.2) outer wall and urceolus (2.4) inwall; Be provided with first between said second ring flat-plate (2.11) upper surface and urceolus (2.4) inwall and strengthen gusset (2.10); Be provided with second between said water seal circle (2.14) outer wall and second ring flat-plate (2.11) lower surface and strengthen gusset (2.12), be provided with the 3rd between said ash-stopping ring (2.16) outer wall and water seal circle (2.14) inwall and strengthen gusset (2.13); Said refractory heat-insulating wall body (2.6) adopts the refractory castable cast to form or be built into by refractory brick.

4. biomass fuel gas generating system as claimed in claim 2; It is characterized in that: in the said grey disc mechanism (3); The blast cap assembly comprises the blast cap (3.2) of at least two range upon range of settings; Described blast cap (3.2) shape is identical, is taper barrel, reduces gradually but size is bottom-up; Nethermost blast cap (3.2) is fixed on the center ring flat-plate (3.18) through retaining plate (3.3), and the blast cap of last layer (3.2) is fixed on down on the upper surface of one deck blast cap (3.2) through retaining plate (3.3); Blast cap assembly periphery in the said water seal inner ring (3.7) is provided with air loop duct, and said air loop duct is connected with admission passage (6); The bottom on said chassis (3.4) is provided with lime scraping knife (3.20), and lime scraping knife (3.20) length direction is to the inclined to one side 5 degree angles of the sense of rotation of chassis (3.4); Be provided with the along the circumferential direction equally distributed outer gusset of polylith (3.11) between the upper surface of the outer wall of said water seal outer ring (3.8) and base plate (3.15); The outer end of the outer gusset (3.11) of said polylith all is welded on the same ring flat-plate (3.10), and this ring flat-plate (3.10) is weldingly fixed on the base plate (3.15); Bottom between said water seal inner ring (3.7) outer wall and water seal outer ring (3.8) inwall is provided with the along the circumferential direction equally distributed inner reinforced plate of polylith (3.13); Said base plate (3.15) lower surface is provided with the sawtooth circle (3.12) that is used to receive motivating force; Said gas-distributing pipe (3.1) lower end is fitted with retaining ash cover (3.19).

5. biomass fuel gas generating system as claimed in claim 2 is characterized in that: saidly go out in the ash bucket (4), heat-insulation and heat-preservation material (4.10) adopts aluminum silicate fiber; The said tapering (α) that goes out ash bucket (4) is 45 ~ 80 degree; Said ash output hole (4.12) is a rectangle, and the inwall of said inner core (4.7) lower part is made as four planes, and these four planes are the four edges of corresponding rectangle ash output hole (4.12) respectively; The said middle part that goes out ash bucket (4) is provided with vision slit (4.9), and said lower part that goes out ash bucket (4) is provided with access opening (4.11).

6. biomass fuel gas generating system as claimed in claim 1; It is characterized in that: in the said ash convenyer structure (5); Driving mechanism adopts deceleration direct-current machine (5.12); The output shaft of deceleration direct-current machine (5.12) is connected transmission through shaft coupling (5.11) with rotating shaft (5.6), and rotating shaft (5.6) lower end is supported through chock (5.10); Said first sealed bearing assembly comprises gland (5.15), acorn nut (5.16), clutch shaft bearing (5.17), clutch shaft bearing seat (5.18) and first felt collar (5.19); Clutch shaft bearing seat (5.18) is fixed on the upper flange lid (5.3); Clutch shaft bearing (5.17) support assemblies is passed through in clutch shaft bearing seat (5.18) in rotating shaft (5.6) upper end; Clutch shaft bearing (5.17) is equipped with first felt collar (5.19) of sealing usefulness through acorn nut (5.16) locking and through gland (5.15) sealing between rotating shaft (5.6) and clutch shaft bearing seat (5.18); Said second sealed bearing assembly comprises second chock (5.20), second bearing (5.21), step cover (5.22) and stuffing box (5.24); Second chock (5.20) is fixed on the lower flange lid (5.9); Second bearing (5.21) support assemblies is passed through in second chock (5.20) in rotating shaft (5.6) lower end; Second bearing (5.21) compresses through step cover (5.22); Step cover (5.22) is fixed by bolts on second chock (5.20); Second felt collar (5.23) of sealing usefulness is housed respectively between rotating shaft (5.6) and second chock (5.20), the step cover (5.22), and stuffing box (5.24) is arranged on step cover (5.22) outside; Said ash output hole (5.2) connects Blowing stopper, is provided with pressure tap (5.14) on ash output hole (5.2) next door.

7. biomass fuel gas generating system as claimed in claim 2; It is characterized in that: the zone of combustion below in the said biomass gasifying furnace also is provided with annular gas pipe, and said high temperature resistant tracheae (6.8) the other end is communicated with annular gas pipe through second tracheae (6.11), the 3rd tracheae (6.12) successively; Said high temperature resistant tracheae (6.8) one ends are provided with into water interface, and the other end is provided with the backwater interface, and the water inlet interface is communicated with the cooling basin through suction culvert (6.10), and the backwater interface connects water return pipeline, and suction pump is installed on the water return pipeline; Said first tracheae (6.3) is provided with temperature element (6.4), venting (6.5) and pressure measurement interface (6.6), is fitted with aluminium foil explosive-proof protector film on the venting (6.5), and pressure measurement interface (6.6) is used to connect pressure instrumentataion; Said first tracheae (6.3) road is provided with steam access tube (6.7).

8. biomass fuel gas generating system as claimed in claim 1; It is characterized in that: said feeding unit (1) comprises blanking device and feeding conveyor; Said blanking device comprises Connection Block (1.1), lower shell (1.2), bell jar valve body (1.3), valve seat (1.4), conical seat (1.5), upper shell (1.6), supporting sealing frame (1.14), first bar (1.16), second bar (1.13), chain cover (1.17), suspension chain (1.7) and bracket institution; Lower shell (1.2) supports through bracket institution; Lower shell (1.2) lower end is installed with the Connection Block (1.1) that is used to connect feeding conveyor; Lower shell (1.2) upper end is connected with upper shell (1.6) lower end through flange; Fixing along welding in conical seat (1.5) edge, upper end and upper shell (1.6) lower end, valve seat (1.4) is installed in conical seat (1.5) lower end; Supporting sealing frame (1.14) is installed on upper shell (1.6) outer wall, is provided with rotating shaft (1.15) in the supporting sealing frame (1.14); Said first bar (1.16) one ends are installed in rotating shaft (1.15) and go up and follow rotating shaft (1.15) rotation synchronously; First bar (1.16) the other end is installed chain cover (1.17); Chain cover (1.17) is gone up through suspension chain (1.7) and is hung bell jar valve body (1.3); This bell jar valve body (1.3) matches with said valve seat (1.4), and the control biomass fuel gets into; Said second bar (1.13) one ends are installed in rotating shaft (1.15) and go up and follow rotating shaft (1.15) rotation synchronously, second bar (1.13) the other end hinge pull bar (1.12).

9. biomass fuel gas generating system as claimed in claim 8; It is characterized in that: said bracket institution comprises toroidal frame (1.8), link span (1.9), auxilliary bracing frame (1.10), bearing (1.18) and column (1.11); Toroidal frame (1.8) is fixed on lower shell (1.2) periphery wall; Be distributed with two columns (1.11) that are 180 degree symmetric arrangement in lower shell (1.2) both sides; Column (1.11) upper end welding bearing (1.18), toroidal frame (1.8) is stated in bearing (1.18) rest residence; Said link span (1.9) is fixed on the toroidal frame (1.8), and link span (1.9) is fixed on the auxilliary bracing frame (1.10), and auxilliary bracing frame (1.10) is fixed on top of gasification furnace; The tapering of said bell jar valve body (1.3) is 50 ~ 75 degree.

10. biomass fuel gas generating system as claimed in claim 8; It is characterized in that: said feeding conveyor comprises housing (1.19), main drive shaft (1.37), driven shaft (1.32), drive sprocket (1.38), driven sprocket (1.31), chain belt (1.28), scraper plate (1.29), bed of material walking plate (1.30) and driving mechanism; Said housing (1.19) is microscler; Housing (1.19) top is provided with and is used for the opening for feed that is connected with Connection Block (1.1) lower end; Said housing (1.19) one ends are installed main drive shaft (1.37) through first bearing assembly; Housing (1.19) the other end is installed driven shaft (1.32) through second bearing assembly; Said main drive shaft (1.37) is positioned at the two ends of housing (1.19) drive sprocket (1.38) is installed respectively; Said driven shaft (1.32) is positioned at the two ends of housing (1.19) driven sprocket (1.31) is installed respectively, respectively is connected transmission through a chain belt (1.28) between two driven sprockets (1.31) and two drive sprockets (1.38); Be provided with some scraper plates (1.29) between said two chain belts (1.28), scraper plate (1.29) two ends are connected on two chain belts (1.28) and follow chain belt (1.28) and are synchronized with the movement; Bed of material walking plate (1.30) is horizontally set in the housing (1.19) along the length direction of housing (1.19), said scraper plate (1.29) base near but do not contact bed of material walking plate (1.30) upper surface.

11. biomass fuel gas generating system as claimed in claim 10 is characterized in that: also be provided with the strainer that is used for two chain belts of tensioning (1.28) on the said feeding conveyor; Said strainer has two covers; The corresponding chain belt of tensioning (1.28) of every cover strainer; Single cover strainer comprises wheel carrier (1.21) and tightener sprocket (1.22); Said wheel carrier (1.21) is microscler, and wheel carrier offers mounting long holes on (1.21), and wheel carrier (1.21) is fastened on the housing (1.19) through the bolt part that is contained in this mounting long holes; Said tightener sprocket (1.22) is installed in wheel carrier (1.21) upper end, and tightener sprocket (1.22) is with chain belt (1.28) engagement and with chain belt (1.28) tensioning.

12. biomass fuel gas generating system as claimed in claim 10; It is characterized in that: said first bearing assembly comprises preceding gland seat (1.34), preceding gland (1.33), rear pressing cover seat (1.39) and rear pressing cover (1.40); Preceding gland seat (1.34), rear pressing cover seat (1.39) are separately fixed on the front and back sidewall of housing (1.19); Preceding gland (1.33) is contained on the preceding gland seat (1.34); Rear pressing cover (1.40) is contained on the rear pressing cover seat (1.39), and said main drive shaft (1.37) two ends are assemblied in preceding gland (1.33), the rear pressing cover (1.40) through sleeve supporting respectively; Said second bearing assembly comprises two chocks (1.41), and two chocks (1.41) are separately positioned on the front and back side of housing (1.19), and the two ends of said driven shaft (1.32) are assemblied in two chocks (1.41) through sleeve supporting respectively.

13. biomass fuel gas generating system as claimed in claim 10; It is characterized in that: said driving mechanism comprises motor (1.36) and step-down gear (1.35); Step-down gear (1.35) is fixedly mounted on housing (1.19) top through step-down gear base (1.26); Motor (1.36) is connected with step-down gear (1.35), installing drive sprocket wheel (1.27) on the output shaft of step-down gear (1.35); The shaft extension end of said main drive shaft (1.37) is equipped with driving chain wheel (1.24), and this driving chain wheel (1.24) is connected transmission with said drive sprocket (1.27) through chain (1.25); Said step-down gear (1.35) adopts cycloidal planetary gear speed reducer (1.35); End and bottom that said housing (1.19) is gone up near opening for feed one end are respectively equipped with opening; The opening of housing (1.19) end is sealed through dismountable valve gap (1.23) and sealing-ring, and the opening of housing (1.19) bottom is sealed through dismountable cover plate (1.20) and sealing-ring.

14. biomass fuel gas generating system as claimed in claim 1 is characterized in that: also be provided with in the said body of heater and be used to scraper (7) that fuel charge level height is consistent; Said scraper (7) comprises transmission shaft (7.12), scrapes materials and parts and driving mechanism; Transmission shaft (7.12) inserts in the body of heater downwards by the furnace roof center; Transmission shaft (7.12) upper end is supported through supporting component and is installed; Transmission shaft (7.12) relies on the drive mechanism rotation, and the said charging tray (7.13) of scraping is fixed on transmission shaft (7.12) lower end.

15. biomass fuel gas generating system as claimed in claim 14; It is characterized in that: said supporting component comprises mount pad (7.11), thrust ball bearing (7.10), deep groove ball bearing (7.8) and gland (7.7); Mount pad (7.11) is fixed on the furnace roof; The axle journal of transmission shaft (7.12) upper end is contained in the centre hole of mount pad (7.11); Thrust ball bearing (7.10) is sleeved on the axle journal and through nut (7.9) locking, two seat rings of thrust ball bearing (7.10) contact respectively and support mount pad (7.11) and nut (7.9); Deep groove ball bearing (7.8) is sleeved on the axle journal, and the inside and outside circle of deep groove ball bearing (7.8) contacts journal and mount pad (7.11) respectively; Gland (7.7) is installed on the mount pad (7.11), and gland (7.7) is encapsulated in thrust ball bearing (7.10) and deep groove ball bearing (7.8) in the centre hole of mount pad (7.11); Clamped paronite (7.19) between said mount pad (7.11) and the furnace roof, between said mount pad (7.11) and the transmission shaft (7.12) sealing-ring (7.20) has been housed.

16. biomass fuel gas generating system as claimed in claim 14; It is characterized in that: said driving mechanism comprises motor reducer (7.1), minor sprocket (7.2), hinge wheel (7.5) and chain (7.4); Motor reducer (7.1) is supported and fixed on the furnace roof through bearing (7.3); Minor sprocket (7.2) is installed on the output shaft of motor reducer (7.1); Hinge wheel (7.5) is installed in said transmission shaft (7.12) upper end, is connected transmission through chain (7.4) between hinge wheel (7.5) and the minor sprocket (7.2); Said transmission shaft (7.12) upper end suit drive sleeve (7.6) is also passed through flat key connection transmission, and hinge wheel (7.5) is installed on the drive sleeve (7.6) through shearing pin.

17. the scraper of biomass gasifying furnace as claimed in claim 14 (7) is characterized in that: said transmission shaft (7.12) is provided with and is used to the supplemental support mechanism that keeps transmission shaft (7.12) stable; Said supplemental support mechanism comprises guide pin bushing (7.14), lining (7.15), platen (7.16), connecting rod (7.17) and supporting seat (7.18); Guide pin bushing (7.14) is fixed on the transmission shaft (7.12), and platen (7.16) is assemblied in guide pin bushing (7.14) through lining (7.15) and goes up and can freely rotate; Said platen (7.16) periphery is provided with at least three along its hinged-support that circumferentially is uniformly distributed with; One end of at least three connecting rods (7.17) is hinged on hinged-support; The other end hinge supporting seat (7.18) of at least three connecting rods (7.17), supporting seat (7.18) is supported on the inboard wall of furnace body surface; The said charging tray (7.13) of scraping comprises center hub (7.13a) and the many scraping rods (7.13b) that are connected on the center hub (7.13a); Center hub (7.13a) is fixed on transmission shaft (7.12) lower end through fastening piece, many scraping rods (7.13b) uniform distribution along the circumferential direction on center hub (7.13a).

18. biomass fuel gas generating system as claimed in claim 1; It is characterized in that: said cyclone dust collector (8) comprises support (8.1), primary cyclone (8.2) and secondary cyclone (8.3); Said primary cyclone (8.2), secondary cyclone (8.3) support through support (8.1); The blast pipe (8.4) of primary cyclone (8.2) is used to feed pending combustion gas; The exhaust duct (8.5) of primary cyclone (8.2) links to each other with the blast pipe (8.4) of secondary cyclone (8.3), and the exhaust duct (8.5) of secondary cyclone (8.3) is used for the combustion gas after handling is transported to the next stage treatment facility.

19. biomass fuel gas generating system as claimed in claim 18; It is characterized in that: said primary cyclone (8.2) is identical with the structure of secondary cyclone (8.3); They include blast pipe (8.4), exhaust duct (8.5) and cylindrical shell (8.8), and cylindrical shell (8.8) upper semisection is cylindrical, and lower semisection is conical; Blast pipe (8.4) is arranged on the cylindrical shell (8.8); Air-flow is the tangential from the direction that blast pipe (8.4) gets into, and exhaust duct (8.5) is coaxial to be arranged in the cylindrical shell (8.8), and exhaust duct (8.5) bottom is shrunk to taper shape downwards gradually; The tube wall of exhaust duct (8.5) is provided with the longer tuyere (8.9) of multiple tracks along its length direction, and said longer tuyere (8.9) is a single deflection grille; Said multiple tracks longer tuyere (8.9) circumferentially is uniformly distributed with in the tube wall upper edge of exhaust duct (8.5), and exhaust duct (8.5) lower end tube wall is provided with a plurality of along wind hole (8.10) that it circumferentially is uniformly distributed with; Be provided with a sleeve body (8.7) that shape is suitable with it outside the said cylindrical shell (8.8), form water jacket between sleeve body (8.7) inwall and cylindrical shell (8.8) outer wall, the water jacket bottom is provided with water-in, and water jacket top is provided with water outlet; Said cylindrical shell (8.8) lower end also is connected with a conic tube (8.11), and the bore of conic tube (8.11) upper end is greater than the bore of cylindrical shell (8.8) lower end.

20. biomass fuel gas generating system as claimed in claim 1; It is characterized in that: said one-level tubular type inter cooler (9) comprises bracing frame (9.1), water-cooled case (9.6), air intake casing (9.15), the housing of giving vent to anger (9.10), water inlet box (9.6b), water outlet box (9.6c), serpentine tube (9.6d), water inlet pipe (9.3) and rising pipe (9.13); Said water-cooled case (9.6) supports through bracing frame (9.1); Water-cooled case (9.6) is at least one; The range upon range of placement of at least one water-cooled case (9.6); Be tightly connected between the casing (9.6a) of all water-cooled casees (9.6); Casing (9.6a) bottom of bottom water-cooled case (9.6) is equipped with the air intake casing (9.15) that is communicated with inlet pipe (9.14), and topmost casing (9.6a) top of water-cooled case (9.6) is equipped with the housing of giving vent to anger (9.10); The both sides of said casing (9.6a) front surface seal respectively installs water inlet box (9.6b) and water outlet box (9.6c); Be provided with many serpentine tubes (9.6d) in the casing (9.6a) in the different heights staggered arrangement; The two ends of many serpentine tubes (9.6d) are communicated with said water inlet box (9.6b) and water outlet box (9.6c) respectively, and water coolant can circulate in serpentine tube (9.6d) from bottom to top; Said water inlet pipe (9.3) is arranged in bracing frame (9.1) and water-cooled case (9.6) one sides; Water inlet box (9.6b) bottom on each water-cooled case (9.6) is communicated with water inlet pipe (9.3) through water inlet arm (9.4), on each water inlet arm (9.4) valve (9.5) is installed all; Rising pipe (9.13) is arranged in bracing frame (9.1) and water-cooled case (9.6) opposite side; An exit branch (9.11) is all installed on water outlet box (9.6c) top on each water-cooled case (9.6); The water outlet below of each exit branch (9.11) is provided with a funnel (9.12), and this funnel (9.12) is communicated with said rising pipe (9.13); The structure of said secondary tubular type inter cooler (11) is identical with one-level tubular type inter cooler (9).

21. biomass fuel gas generating system as claimed in claim 20 is characterized in that: the said housing of giving vent to anger (9.10) is provided with venting (9.9), and relief pipe (9.7) is installed on the venting (9.9), and decompression hand valve (9.8) is installed on the relief pipe; The bottom of said air intake casing (9.15) is connected with aggregate pipe (9.16), and aggregate pipe (9.16) lower end connects collection bucket (9.17), and first valve (9.18) open in usual is installed on the aggregate pipe (9.16); Said collection bucket (9.17) bottom is equipped with drainage conduit (9.19), and second valve (9.20) of normally closed type is installed on the drainage conduit (9.19); Said water-cooled case (9.6) has six, and water-cooled case (9.6) is square.

22. biomass fuel gas generating system as claimed in claim 1; It is characterized in that: said combustion gas filtering and purifying (12) comprises air inlet pants pipe (12.1), valve (12.2), first gas filter (12.3), second gas filter (12.4) and the pants pipe (12.5) of giving vent to anger; The person in charge of said air inlet pants pipe (12.1) is used for air inlet, and the person in charge of the pants pipe (12.5) of giving vent to anger is used to give vent to anger; An arm of air inlet pants pipe (12.1) is connected with the inlet mouth of first gas filter (12.3) through a valve (12.2), and the air outlet of first gas filter (12.3) is through one pipe coupling of another valve (12.2) with the pants pipe (12.5) of giving vent to anger; Another arm of air inlet pants pipe (12.1) is connected with the inlet mouth of second gas filter (12.4) through a valve (12.2), and the air outlet of second gas filter (12.4) is through another valve (12.2) another pipe coupling with the pants pipe (12.5) of giving vent to anger.

23. biomass fuel gas generating system as claimed in claim 22 is characterized in that: said valve (12.2) adopts Hand-operated butterfly valve; The person in charge of described air inlet pants pipe (12.1), the pants pipe (12.5) of giving vent to anger is identical with the caliber of arm.

24. biomass fuel gas generating system as claimed in claim 1; It is characterized in that: said one-level moisture separator (13) comprises cyclonic separator (13.1) and water tank (13.4); Said cyclonic separator (13.1) supports through support (13.2); The blast pipe (13.1a) of cyclonic separator (13.1) is used to feed the combustion gas that contains moisture; The exhaust duct (13.1b) of cyclonic separator (13.1) is used for the combustion gas behind the separation moisture is transported to the next stage treatment facility, and the liquid outlet of cyclonic separator (13.1) bottom is connected with pipeline (13.3), and this pipeline (13.3) lower end is stretched in the water tank (13.4); Said water tank (13.4) top is provided with upflow tube (13.5), is used for the liquid level in the water tank (13.4) is maintained certain altitude; The structure of said secondary moisture separator (14) is identical with one-level moisture separator (13).

25. biomass fuel gas generating system as claimed in claim 24; It is characterized in that: said cyclonic separator (13.1) comprises blast pipe (13.1a), exhaust duct (13.1b) and cylindrical shell (13.1c); Cylindrical shell (13.1c) upper semisection is cylindrical; Lower semisection is conical; Blast pipe (13.1a) is arranged on the cylindrical shell (13.1c), and air-flow is the tangential from the direction that blast pipe (13.1a) gets into, and exhaust duct (13.1b) is coaxial to be arranged in the cylindrical shell (13.1c); Exhaust duct (13.1b) bottom is shrunk to taper shape downwards gradually; The tube wall of exhaust duct (13.1b) is provided with the longer tuyere (13.1e) of multiple tracks along its length direction, and said multiple tracks longer tuyere (13.1e) circumferentially is uniformly distributed with in the tube wall upper edge of exhaust duct (13.1b), and exhaust duct (13.1b) lower end tube wall is provided with a plurality of along wind hole (13.1f) that it circumferentially is uniformly distributed with; Said longer tuyere (13.1e) is a single deflection grille.

26. biomass fuel gas generating system as claimed in claim 1; It is characterized in that: said gas transmission gas storage piping system comprises connecting tube, roots blower (15), smoke evacuation purification of combustion device (16) and coal gas surge tank (17); The outlet of said secondary moisture separator (14) is connected respectively with smoke evacuation purification of combustion device (16), coal gas surge tank (17) through connecting tube; Said roots blower (15) is arranged on the connecting tube; Be used to provide carrying capacity, said smoke evacuation purification of combustion device (16) is used for removing the detrimental impurity composition of discharging gas, and said coal gas surge tank (17) is used for temporary biological fuel gas.

27. biomass fuel gas generating system as claimed in claim 26 is characterized in that: said smoke evacuation purification of combustion device (16) comprises blower fan (16.1), air intake pipeline (16.2), burning purification pipe, supporting tube (16.3), stovepipe (16.14), following flat flame burner (16.17), goes up flat flame burner (16.10), following high temperature steel dividing plate (16.7) and last high temperature steel dividing plate (16.9); Blower fan (16.1) connects air intake pipeline (16.2), and the burning purification pipe supports through supporting tube (16.3), and the lower end import of burning purification pipe is connected with foreign gas access tube (16.19), is used to feed pending foreign gas; The upper end outlet of burning purification pipe connects stovepipe (16.14), is provided with stack cover (16.16) directly over the stovepipe (16.14), and stack cover (16.16) is fixed on the stovepipe (16.14) through support bar (16.15); Said burning purification pipe inwall is provided with refractory masses (16.8); Following flat flame burner (16.17) is arranged on a side of burning purification pipe bottom; Last flat flame burner (16.10) is arranged on the opposite side on burning purification pipe top; Following flat flame burner (16.17), last flat flame burner (16.10) are provided with burner block (16.11) on every side; The air of following flat flame burner (16.17), last flat flame burner (16.10) is communicated with air intake pipeline (16.2) respectively, and the fuel gas inlet of following flat flame burner (16.17), last flat flame burner (16.10) is communicated with gas line (16.19) respectively; Following high temperature steel dividing plate (16.7) is arranged on the bottom in the burning purification pipe, and under the flat flame burner (16.17), the side that following high temperature steel dividing plate (16.7) is gone up near following flat flame burner (16.17) is provided with ventilating pit under being positioned at; Last high temperature steel dividing plate (16.9) is arranged on the middle part in the burning purification pipe; Be positioned on the following flat flame burner (16.17), go up under the flat flame burner (16.10), the side that last high temperature steel dividing plate (16.9) is gone up near last flat flame burner (16.10) is provided with ventilating pit.

28. biomass fuel gas generating system as claimed in claim 27; It is characterized in that: said burning purification pipe comprises first pipe fitting (16.12) and second pipe fitting (16.6) that connects through flange; The upper end of first pipe fitting (16.12) is conical; Its top is provided with pipe connecting (16.13), and pipe connecting (16.13) upper end is connected with said stovepipe (16.14); Second pipe fitting (16.6) supports through supporting tube (16.3), and the lower end of second pipe fitting (16.6) is conical, and its bottom is provided with bridge piece (16.4), and bridge piece (16.4) is connected with foreign gas access tube (16.19); Said burning purification pipe bottom is provided with the nozzles with injector (16.5) that spout makes progress, and nozzles with injector (16.5) is near following flat flame burner (16.17) one sides on the burning purification pipe, and nozzles with injector (16.5) is communicated with said air intake pipeline (16.2); Clamped one deck silk between said burning purification pipe lower end import and the foreign gas access tube (16.19) and directly be 0.6mm, the order number is 10 purpose Stainless Steel Wire screen cloths, in case non-return is fiery; The composition of said refractory masses (16.8) is aluminosilicate property refractory fibre, polycrystalline alumina fiber, mullite fiber or Zirconium oxide fibre.