CN201265874Y

CN201265874Y - Biomass straw gasifying stove

Info

Publication number: CN201265874Y
Application number: CNU2008200635902U
Authority: CN
Inventors: 张德军
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-05-30
Filing date: 2008-05-30
Publication date: 2009-07-01
Anticipated expiration: 2018-05-30

Abstract

The utility model discloses a biomass straw gasification furnace which comprises a furnace body, a feeding cover, a storage hopper, a nozzle, a gas collection port, a gas collection pipeline, a fuel gas pipeline, a furnace grate, an ash chamber, a furnace burner and other appurtenances, wherein a double-layer water seal holder which is arranged at the inner side of the upper end of the furnace body comprises a water seal layer that is filled with water and a water tank layer that is not filled with water; a double-layer seal sleeve corresponding to the double-layer water seal holder in position, shape and size is arranged at the edge of the lower end of the feeding cover; the gas collection port is arranged at a position on an insulation layer in the furnace body, and the position is parallel to or slightly higher than that of the nozzle; a pressure rod is arranged at the middle part of the feeding cover, a pressure handle is connected to the upper end of the pressure rod, and a pressure tray is connected to the lower end of the pressure rod. As the pressure devices are arranged, and the position of the gas collection port is lower, the biomass straw gasification furnace can burn fuels with larger bulks and output fuel gases with higher carbon and hydrogen contents; in addition, as the water tank is arranged, the emission of tar and waste water can be greatly reduced.

Description

Biomass stalk gasification furnace

Technical field

The utility model relates to a kind of agricultural combustion gas generation device, relates in particular to a kind of living beings of utilizing and passes through airtight anoxia, employing pyrolysismethod and the heat chemistry oxidizing process generation fuel gas biomass stalk gasification furnace as the burning energy

Background technology

The plant straw gasification furnace is with various agricultural crop straw (as: wheat straws, high grain bar, beanstalk and various bavin standing grain), deforestation, wood machining residues and industrial organic waste material (as: bagasse, vinasse etc.) raw material changes into a kind of agricultural combustion gas generation device of the high efficiency burnt gas of high-quality cleaning by airtight oxygen debt burning, it makes vast rural area can use cleaning combustion gas easily on the one hand, enjoy the enjoyment of the modern life, on the other hand because of its raw material energy holomorphosis, can substitute valuable in a large number and limited coal, fossil energies such as oil were so widelyd popularize and be extensive use of in the rural area in recent years.

Biomass stalk gasification furnace comprises large-scale straw gasification station and small-sized domestic type gasification furnace, is divided into various forms such as suction, downdraft, fluid bed, recirculating fluidized bed again by the structure difference.In existing small-sized household gasification furnace, because gas collection mouth position is higher, far away relatively apart from the nozzle that temperature is the highest, make its discharge in combustion gas might some the time contain more decomposition tar and steam completely inadequately, can not produce more carbon oxygen combustible gas and hydrocarbon combustible gas, so the combustion gas quality of its generation is not very stable, tar and discharged waste water are also bigger; In addition for the patch fuel of bulk comparatively, because its gap is bigger, do not compress the device in its gap in the existing gasification furnace again, cause its burning relatively abundant easily, thereby the content of carbon oxygen combustible gas and hydrocarbon combustible gas in the combustion gas that has reduced to discharge has reduced the performance of product.

Summary of the invention

The purpose of this utility model provides a kind of novel biomass stalk gasification furnace with regard to being in order to address the above problem, this gasification furnace can the relatively large patch fuel of ratio of combustion and do not reduce the content of discharging carbon oxygen combustible gas and hydrocarbon combustible gas in the combustion gas.

In order to achieve the above object, the utility model is realized by the following technical solutions:

The utility model comprises body of heater, feeding cover, feed bin, nozzle, gas collection mouth, collecting pipe, gas pipeline, grate, grey chamber, burner and other appurtenances, its innovation part is, be provided with double-deck water seal seat in the inboard, upper end of body of heater, double-deck water seal seat is made of the water seal layer of dress water and the tank layer of not adorning water, is provided with and the corresponding double-layer seal cover of position, shape and the size of double-deck water seal seat in the lower edge of feeding cover; The gas collection mouth is arranged at and is parallel on the heat-insulation layer in the body of heater or a little more than the position of nozzle; Middle part at feeding cover is equipped with compressing rod, and the upper end of compressing rod connects the binder handle, and the lower end of compressing rod connects the binder dish.

The degree of depth of the annular double-layer seal cover of feeding cover lower edge is about 5 centimetres, and with double-deck water seal seat on the body of heater formation hermetically-sealed construction that closely cooperates, the outer water seal layer dress water of double-deck water seal seat is used for sealing; Nexine tank layer is not adorned water, is used to collect the water vapour of evaporation in the gasification furnace upper water seal and the water vapour that the fuel burn incompletely produces, and has reduced the vapour content of discharging in the combustion gas, makes the better quality of discharging combustion gas.Because the gas collection mouth is arranged at and is parallel on the heat-insulation layer in the body of heater or a little more than the position of nozzle, upper of furnace body does not have the possibility of gas flow, the fuel that can only transmit heat and preheating top produces certain moisture simultaneously, so the combustion gas of discharging all will be through the highest nozzle space on every side of excess temperature before being discharged from, the steam that the gasification of body of heater bottom produces can directly be participated in the reducing zone reaction on nozzle top, obtain more hydrogen and other fuel gas and improve the temperature of reducing zone, booster action has been played in the cracking first time of tar; The grey chamber of combustible gas below the reducing zone of high temperature is introduced directly into grate simultaneously, further a drying and buffer memory effect are played in combustion gas, the time that allows combustion gas stop in stove increases, add that gas outlet and escape pipe all are positioned at the highest position of stove temperature, tar has been played certain splitting action, and reduced moisture, produce more fuel gas.When the fuel of a kind of large-size that burns separately, because the space between the fuel is bigger, this is unfavorable for the burn incompletely of fuel, so will be by pressing down the binder handle, drive the downward compressed fuel of compressing rod, the space between the fuel is diminished, help the burn incompletely of fuel, the shape of compressing rod bottom can be round, yi word pattern or pawl type etc., as long as can reach the purpose of binder; Certainly, if the diameter dimension of fuel below 10 centimetres, its space was just smaller originally, just without compressed fuel, generally speaking, this structure makes the scope of application of fuel wider, and can alleviate the burden of fuel processing to a certain extent.

As optimum structure of the present utility model, the diameter of described gas collection mouth is the 7-15 millimeter, and quantity is 9-15.This makes that gas collection mouth of the present utility model is longer, has reduced because of the gas collection short drawback that results in blockage easily of making a slip of the tongue.

Collecting pipe and outlet pipe vertically are installed in the body of heater, the outer both sides of heat-insulation layer, its lower port is all a little less than grate, the upper port of collecting pipe is positioned at the feeding cover place and seals with the internal thread plug, and the upper port of outlet pipe is positioned at the feeding cover place and uses the sealing of internal thread plug.The utility model has increased the length of collecting pipe and outlet pipe, helps the Breakdown Maintenance that causes because of obstruction; Lower port is a little less than grate, be positioned at below the grate, be convenient to the ash ash entrance chamber that falls automatically, for ash certain centrifugation is arranged, and reduced the obstruction of later stage pipeline, reduce the number of times of service conduit, the pipeline of upper port one side is lengthened to the feeding cover place and seals with the internal thread plug, with convenient maintenance and cleaning to pipeline as far as possible.

Be connected by anti-silk outside the bottom of compressing rod between compressing rod and the binder dish, be connected by the internal thread on the feeding cover between compressing rod and the feeding cover.This structure has solved the defective that a lot of gasification furnace compressing rods adopt full silk structure: because of furnace body temperature reduces, compressing rod cools off hardening because of tar, and compressing rod cannot be moved and move up and down; In addition, the compressing rod of whole silk structure is cleared up cumbersome, and the compressing rod action neither be very convenient, and on the contrary, compressing rod cleaning of the present utility model is simple, and the compressing rod action is also very convenient.

Burner is equipped with the stainless steel micropore fire seperating piece in a slice 2-5 millimeter aperture.This structure plays certain cushioning effect and reduces the length of flame combustion gas, adds burner secondary air distribution, and fuel gas buring is more abundant; Because the distance between the aperture of micropore fire seperating piece is closer, between each column of flame to around the column of flame play certain help, it is more stable to burn, flame temperature is higher, and the fuel gas that is cracked into for the third time of tar is played good effect.

One end of air mixture pipeline and the middle part of gas pipeline are connected, the other end and burner are connected, on the air mixture pipeline, burnt gas switch is installed, intercommunication is equipped with aid distributing pipe between burnt gas switch and burner, the air distribution switch is installed on described aid distributing pipe, and the other end of described aid distributing pipe is connected with blower fan.Said apparatus is an air distribution device, and its effect is the oxygen content and the flowing velocity thereof of regulating in the combustion gas, makes combustion gas reach the best combustion effect.

The opening of nozzle be to around parallel, uniform opening.The mode of oxygen supply is to be oxygen supply around the middle mind-set nozzle with nozzle, and this makes that the temperature around the nozzle is all high and even, helps improving the quality of discharging combustion gas.Because the residing environment temperature of nozzle is very high, so nozzle must be to make of exotic material, to guarantee the normal use of product.

The beneficial effects of the utility model are:

In sum, the fuel that the utility model is can ratio of combustion relatively large and do not reduce the performance of combustion gas makes the scope of application of fuel wider, and can alleviate the burden of fuel processing to a certain extent; Can continue, stably export carbon oxygen combustible gas and the higher combustion gas of hydrocarbon combustible gas content, make fuel availability reach maximization; Owing to decompose fully,, help environmental protection so can farthest reduce the discharging of tar and waste water; Be difficult for stopping up, fault rate is low, is convenient to safeguard; Simple, convenient; Help in rural households, extensively promoting the use of, and optimized the rural energy structure comprehensively, help the modernization construction in rural area.

Description of drawings

Accompanying drawing is the utility model overall structure schematic diagram in actual applications.

Wherein, 1 internal thread plug, 2 heat-insulation layers, 3 gas collection mouths, 4 nozzles, 5 ash holes, 6 grates, 7 fiery switches of examination and examination burner, 8 compressing rods, 9 internal thread plugs, 10 double-deck water seal seats, 11 pots of framves, 12 kitchen range top supports, 13 burnt gas switch, 14 air distribution switches, 15 escape pipes, 16 oxygen supply switches, 17 stainless steel micropore fire seperating pieces, 18 blower fans, 19 burners, 20 feed bins,

grey chambers

21,22 feeding covers, 23 charge doors, 24 bodies of heater, 25 air mixture pipelines, 26 gas pipelines, 27 collecting pipes, 28 feeding cover internal threads, anti-silk outside 29 bottoms, 30 binder dishes, 31 oxygen supply pipes, 32 binder handles.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is further described in detail:

As shown in drawings, the utility model comprises body of heater 24, feeding cover 22, feed bin 20, nozzle 4, gas collection mouth 3, collecting pipe 27, gas pipeline 26, grate 6, grey chamber 21, burner 19 and other appurtenances, be provided with double-deck water seal seat 10 in the inboard, upper end of body of heater 24, double-deck water seal seat 10 is made of the water seal layer of dress water and the tank layer of not adorning water, is provided with and the corresponding double-layer seal cover of position, shape and the size of double-deck water seal seat 10 in the lower edge of feeding cover 22; Gas collection mouth 3 is arranged at and is parallel on the heat-insulation layer 2 in the body of heater 24 or a little more than the position of nozzle 4; At the middle part of feeding cover 22 compressing rod 8 is installed, the upper end of compressing rod 8 connects binder handle 32, and the lower end of compressing rod 8 connects binder dish 30.

As shown in drawings, the diameter of gas collection mouth 3 is the 7-15 millimeter, and quantity is 9-15.This makes that gas collection mouth of the present utility model 3 is longer, has reduced because of the gas collection mouth 3 too short drawbacks that result in blockage easily.Collecting pipe 27 and gas pipeline 26 vertically are installed in the body of heater 24, heat-insulation layer 2 both sides outward, its lower port is all a little less than grate 6, the upper port of collecting pipe 27 is positioned at feeding cover 22 places and seals with internal thread plug 1, and the upper port of gas pipeline 26 is positioned at feeding cover 22 places and uses 9 sealings of internal thread plug.The utility model has increased the length of collecting pipe 27 and gas pipeline 26, helps the Breakdown Maintenance that causes because of obstruction; Lower port is a little less than grate 6, be positioned at grate below 6, be convenient to the ash ash entrance chamber 21 that falls automatically, for ash certain centrifugation is arranged, and reduced the obstruction of later stage pipeline, reduce the number of times of service conduit, the pipeline of upper port one side is lengthened to feeding cover 22 places and seals with the internal thread plug, with convenient maintenance and cleaning to pipeline as far as possible.

As shown in drawings, be connected by anti-silk 29 outside the bottom of compressing rod 8 between compressing rod 8 and the binder dish 30, be connected by the internal thread on the feeding cover 22 28 between compressing rod 8 and the feeding cover 22.This structure has solved the defective that a lot of gasification furnace compressing rods adopt full silk structure: because of furnace body temperature reduces, compressing rod cools off hardening because of tar, and compressing rod cannot be moved and move up and down; In addition, the compressing rod of whole silk structure is cleared up cumbersome, and the compressing rod action neither be very convenient, and on the contrary, compressing rod 8 cleanings of the present utility model are simple, and compressing rod 8 actions are also very convenient.

As shown in drawings, burner 19 is equipped with the stainless steel micropore fire seperating piece 17 in a slice 2-5 millimeter aperture.This structure plays certain cushioning effect and reduces the length of flame combustion gas, adds the secondary air distribution of burner 19, and fuel gas buring is more abundant; Because the distance between the aperture of micropore fire seperating piece 17 is closer, between each column of flame to around the column of flame play certain help, so burning is more stable, flame temperature is higher, and the fuel gas that is cracked into for the third time of tar is played good effect.

As shown in drawings, one end of air mixture pipeline 25 and the middle part of gas pipeline 26 are connected, the other end and burner 19 are connected, burnt gas switch 13 is installed on air mixture pipeline 25, intercommunication is equipped with aid distributing pipe between burnt gas switch 13 and burner 19, air distribution switch 14 is installed on described aid distributing pipe, and the other end of described aid distributing pipe is connected with blower fan 18.Said apparatus is an air distribution device, and its effect is the oxygen content and the flowing velocity thereof of regulating in the combustion gas, makes combustion gas reach the best combustion effect.

As shown in drawings, the opening of nozzle 4 be to around parallel, uniform opening.The mode of oxygen supply is to be oxygen supply around the middle mind-set nozzle 4 with nozzle 4, and this makes that the temperature around the nozzle 4 is all high and even, helps improving the quality of discharging combustion gas.Because nozzle 4 residing environment temperatures are very high, so nozzle 4 must be to make of exotic material, to guarantee the normal use of product.

As shown in drawings, the degree of depth of the annular double-layer seal of feeding cover 22 lower edge cover is about 5 centimetres, and with double-deck water seal seat 10 on the body of heater 24 formation hermetically-sealed construction that closely cooperates, the outer water seal layer dress water of double-deck water seal seat 10 is used for sealing; Nexine tank layer is not adorned water, is used to collect the water vapour of evaporation in the gasification furnace upper water seal and the water vapour that the fuel burn incompletely produces, and has reduced the vapour content of discharging in the combustion gas, makes the better quality of discharging combustion gas.Because gas collection mouth 3 is arranged at and is parallel on the heat-insulation layer 2 in the body of heater 24 or a little more than the position of nozzle 4, top in the body of heater 24 does not have the possibility of gas flow, the fuel that can only transmit heat and preheating top produces certain moisture simultaneously, so the combustion gas of discharging all will be through the highest nozzle 4 space on every side of excess temperature before being discharged from, the steam that bottom gasification in the body of heater 24 produces can directly be participated in the reducing zone reaction on nozzle 4 tops, obtain more hydrogen and other fuel gas and improve the temperature of reducing zone, booster action has been played in the cracking first time of tar; The grey chamber 21 of combustible gas below the reducing zone of high temperature is introduced directly into grate 6 simultaneously, further a drying and buffer memory effect are played in combustion gas, the time that allows combustion gas stop in stove increases, add that gas outlet and escape pipe all are positioned at the highest position of stove temperature, tar has been played certain splitting action, and reduced moisture, produce more fuel gas.When the fuel of a kind of large-size that burns separately, because the space between the fuel is bigger, this is unfavorable for the burn incompletely of fuel, so will be by pressing down binder handle 32, drive compressing rod 8 downward compressed fuels, the space between the fuel is diminished, help the burn incompletely of fuel, the shape of compressing rod 8 bottoms can be round, yi word pattern or pawl type etc., as long as can reach the purpose of binder; Certainly, if the diameter dimension of fuel below 10 centimetres, its space was just smaller originally, just without compressed fuel, generally speaking, this structure makes the scope of application of fuel wider, and can alleviate the burden of fuel processing to a certain extent.

In conjunction with the accompanying drawings, method of operating of the present utility model and principle are as follows:

At first, feeding cover 22, blower fan 18, oxygen supply switch 16, burnt gas switch 13, air distribution switch 14, the fiery switch of examination and examination burner 7 all are in closed condition.Earlier with more inflammable fuel ignition: at first open feeding cover 22, fuel is added feed bin 20 from charge door 23, blower fan 18 and oxygen supply switch 16 are opened, make air arrive nozzles 4 and be diffused in the space in the feed bin 20 by oxygen supply pipe 31, in the igniting of the position of nozzle 4, blower fan 18 is reached smaller position then, preferably allow the burning of its naked light for a moment, smoke evacuation can be few a lot of like this, and yes under situation about being perfectly safe.The fire in a stove before fuel is added must be burned, just can feed in raw material after the fire in a stove before fuel is added is arranged when following, fuel is added feed bin 20 from charge door 23, it is general more than 30 centimeters that general fuel covers nozzle 4, preferably wait stove to have when adding thick fuel to add again behind certain charcoal layer relatively good, but be noted that the gap point that as far as possible allows between the fuel, necessity is pressed by binder handle 32.After allowing blower fan 18 blow 1-2 minute, cover feeding cover 22 then.In feed bin 20, the part in the combustion gas that the fuel burn incompletely produces is through gas collection mouth 3, collecting pipe 27, and another part arrives gas pipeline 26 through grey chamber 21, escape pipe 15 again through behind the grate 6.After covering feeding cover 22, can open fiery switch of examination and examination burner 7, and carry out the pilot fire.If can light, can close fiery switch of examination and examination burner 7, at this moment burnt gas switch 13 is opened, just can use gasification furnace in burner 19 igniting; If temporarily can not light, then continue the relight process and get final product, generally can both light very soon.In the use, the size of firepower can be regulated by the speed-regulating switch of blower fan 18 and the air distribution switch 14 on the aid distributing pipe.The general user should be on top of after using 2-3 time.Pot frame 11 is installed in the top of kitchen range top support 12, on pot frame 11 various Domestic pots can be installed, and acts as a fuel the same with using urban duct coal gas.

Claims

1, a kind of biomass stalk gasification furnace, comprise body of heater (24), feeding cover (22), feed bin (20), nozzle (4), gas collection mouth (3), collecting pipe (27), gas pipeline (26), grate (6), ash chamber (21), burner (19) and other appurtenances, it is characterized in that: be provided with double-deck water seal seat (10) in the inboard, upper end of body of heater (24), double-deck water seal seat (10) is made of the water seal layer of dress water and the tank layer of not adorning water, is provided with position with double-deck water seal seat (10) in the lower edge of feeding cover (22), the corresponding double-layer seal cover of shape and size; Gas collection mouth (3) is arranged at and is parallel on the heat-insulation layer (2) in the body of heater (24) or a little more than the position of nozzle (4); At the middle part of feeding cover (22) compressing rod (8) is installed, the upper end of compressing rod (8) connects the binder handle, and the lower end of compressing rod (8) connects binder dish (30).

2, biomass stalk gasification furnace according to claim 1 is characterized in that: the diameter of gas collection mouth (3) is the 7-15 millimeter, and quantity is 9-15.

3, biomass stalk gasification furnace according to claim 1, it is characterized in that: collecting pipe (27) and gas pipeline (26) vertically are installed in the body of heater (24), the outer both sides of heat-insulation layer (2), its lower port is all a little less than grate (6), the upper port of collecting pipe (27) is positioned at that feeding cover (22) is located and with internal thread plug (1) sealing, and the upper port of gas pipeline (26) is positioned at that feeding cover (22) is located and seals with internal thread plug (9).

4, biomass stalk gasification furnace according to claim 1, it is characterized in that: be connected by anti-silk (29) outside the bottom of compressing rod (8) between compressing rod (8) and the binder dish (30), be connected by the internal thread (28) on the feeding cover (22) between compressing rod (8) and the feeding cover (22).

5, biomass stalk gasification furnace according to claim 1 is characterized in that: burner is equipped with the stainless steel micropore fire seperating piece (17) in a slice 2-5 millimeter aperture.

6, biomass stalk gasification furnace according to claim 1, it is characterized in that: the middle part of an end of air mixture pipeline (25) and gas pipeline (26) is connected, the other end and burner (19) are connected, burnt gas switch (13) is installed on air mixture pipeline (25), intercommunication is equipped with aid distributing pipe between burnt gas switch (13) and burner (19), air distribution switch (14) is installed on described aid distributing pipe, and the other end of described aid distributing pipe is connected with blower fan (18).

7, biomass stalk gasification furnace according to claim 1 is characterized in that: the opening of nozzle (4) for to around parallel, uniform opening.