CN211227035U - Single double-effect straw gasification furnace - Google Patents

Abstract

A single double-effect straw gasification furnace comprises: furnace body, the fan, the oil catcher, the centrifugation extension, the gas collection shunt, a water heater, the water heater chimney pipe, the combustor, first valve, the second valve, the ware of lighting, the cyclone, a filter, the clarifier, through lighting glassware heated air, make air temperature reach the straw ignition point, evenly get into the gasifier through the cyclone transport simultaneously, contact with the straw, guarantee that the straw schizolysis turns into combustible gas efficiency, cold bridge cavity problem has been solved, the mist passes through multi-stage filter and clarifier in proper order, effective filtration tar, safety and reliability, and convenient to use and easy maintenance, can not bring secondary pollution for tar burning production harmful gas.

Description

Single double-effect straw gasification furnace

Technical Field

The utility model relates to a renewable energy field, concretely relates to monomer economic benefits and social benefits straw gasification stove.

Background

Under the background that the traditional fossil energy is exhausted and the environmental pollution is increasingly serious, the biomass energy is widely applied as renewable energy. The biomass is the most widely existing substance on the earth, the biomass gasified combustible gas is clean energy, the life quality can be improved, the life burden of farmers can be reduced, the application of the straw gasified combustible gas is a revolution of energy utilization in rural areas, and the straw gasified combustible gas is a significant measure for realizing national strategies of energy conservation and emission reduction in China.

Straw gasification is a technology of biomass thermochemical conversion, a straw gasification furnace is core equipment in a biomass gasification system, straw materials are filled in a furnace for heating, organic hydrocarbons with higher molecular weight are cracked and converted into combustible gas under the condition of incomplete combustion, the processes of pyrolysis reaction, oxidation combustion reaction, reduction reaction and the like can be decomposed according to the reaction process, a certain amount of air needs to be supplied in the gasification process, the materials are partially combusted, and the mixed gas generated after the reaction contains combustible gas such as hydrogen, carbon monoxide, low-molecular hydrocarbons and the like; meanwhile, the mixed gas also contains incombustible components such as tar, water vapor and ash, and the impurities need to be separated to form relatively pure combustible gas.

The straw gasification furnace in the current market has the following defects:

1. a cold bridge cavity phenomenon is easy to occur in the combustion process, the gas production rate is unstable, and the cracking efficiency of the organic hydrocarbon is low;

2. the tar content is high, the filter can not effectively filter tar, and pipelines and a combustor are easy to block, so that the combustor can not be normally used.

Disclosure of Invention

The utility model discloses to the problem that exists among the prior art, developed some glassware, cyclone, multi-stage filter and clarifier, designed a monomer economic benefits and social benefits straw gasification stove, through some glassware heated air, made the air temperature reach the straw ignition, simultaneously through cyclone transport evenly get into the gasification stove, contact with the straw, guarantee the straw schizolysis and convert into combustible gas efficiency, solved the cold bridge cavity problem; the mixed gas passes through the multi-stage filter and the purifier in sequence, tar is effectively filtered, the content of impurities in the combustible gas is lower than the standard, and harmful gas cannot be brought by burning of the tar.

The utility model relates to a technical scheme that monomer economic benefits and social benefits straw gasification furnace adopted is: a single double-effect straw gasification furnace comprises: furnace body 1, fan 3, oil collector 6, centrifugal extension 8, gas collection shunt 9, water heater 10, water heater chimney 11, combustor 14, first valve 15, second valve 16, characterized by, it still includes: the material distributor comprises a material distributor 2, a cyclone 4, a filter 5 and a purifier 7, wherein a gas outlet of a fan 3 is communicated with a material distributor gas inlet 22 of the material distributor 2, a material distributor gas outlet 24 of the material distributor 2 is communicated with a cyclone gas inlet 41 of the cyclone 4, the bottom end surface of a furnace body 1 is communicated with the upper end surface of the cyclone 4, a furnace body gas outlet 103 of the furnace body 1 is communicated with a filter gas inlet 62 of the filter 5, a filter water outlet pipe 61 of the filter 5 is communicated with an oil collector 6, a filter gas outlet pipe 63 of the filter 5 is communicated with a purifier gas inlet 74 of the purifier 7, the upper end of a purifier filter screen 75 of the purifier 7 is communicated with a gas inlet of a centrifugal separator 8, the gas outlet of the centrifugal separator 8 is communicated with the gas inlet of a gas collector 9, and the gas collector 9 is respectively provided with a first valve 17 of the gas collector, a, The gas collecting splitter is provided with a third valve 19, the gas outlet of the gas collecting splitter 9 is communicated with the combustor 14, a first valve 15 is arranged on a pipeline communicated with the combustor 14 through the gas collecting splitter 9, a water heater 10 is arranged on the upper portion of the combustor 14, a pipeline communicated with a water heater chimney 11 is arranged on a pipeline between the gas outlet of the gas collecting splitter 9 and the first valve 15, and a second valve 16 is arranged on a pipeline communicated with the gas outlet of the water heater chimney 11 and the gas collecting splitter 9.

The material dispenser 2 comprises: the device comprises a material dotting device shell 21, a material dotting device air inlet 22, a material dotting device reaction chamber 23, a material dotting device air outlet 24, a material dotting device heat-insulating plug 25 and a resistance wire 26, wherein the material dotting device reaction chamber 23 is arranged in the material dotting device shell 21, the material dotting device heat-insulating plug 25 is arranged in the material dotting device reaction chamber 23, a through hole is formed in the material dotting device heat-insulating plug 25, the resistance wire 26 is arranged in the through hole in the material dotting device heat-insulating plug 25, the resistance wire 26 is connected with a power supply, and the material dotting device reaction chamber 23 is provided with the material.

The cyclone 4 comprises: the cyclone air inlet pipe 41 is fixedly connected with the cyclone outer shell 42 and the cyclone inner shell 44, the cyclone 41 end in the cyclone inner chamber 45 is fixedly connected with the cyclone first air deflector 46, the cyclone inner shell 46, the cyclone second air deflector 47, the cyclone third air deflector 48 and the cyclone bottom plate 49 respectively, A cyclone second air deflection plate 47 and a cyclone third air deflection plate 48.

The filter 5 comprises: a filter middle partition plate 51, a filter fourth layer shell 52, a filter fourth air storage chamber 53, a filter first layer shell 54, a filter first air storage chamber 55, a filter second layer shell 56, a filter second air storage chamber 57, a filter third layer shell 58, a filter third air storage chamber 59, a filter water outlet pipe 61, a filter air inlet pipe 62, a filter air outlet pipe 63, a filter outer cover plate 64 and a filter inner cover plate 65, wherein a group of through holes are arranged on the filter middle partition plate 51, the filter fourth air storage chamber 53 is arranged in the filter fourth layer shell 52, the filter middle partition plate 51 is arranged in the filter fourth air storage chamber 53, the filter third air storage chamber 59 is arranged between the filter third layer shell 58 and the filter fourth layer shell 52, the filter third layer shell 58 is provided with a group of through holes, the filter second air storage chamber 57 is arranged between the filter second layer shell 56 and the filter third layer shell 58, the filter inner cover plate 65 penetrates through the filter fourth layer shell 52, the filter second layer shell 56 and the filter third layer shell 58 to seal the upper ports of the filter second air storage chamber 57 and the filter third air storage chamber 59, the lower ports of the filter fourth air storage chamber 53, the filter second air storage chamber 57 and the filter third air storage chamber 59 are open, the filter first air storage chamber 55 is arranged in the filter first layer shell 54, the upper port of the filter first air storage chamber 55 is sealed by the first layer shell 54 and the filter outer cover plate 64, the lower end of the filter first air storage chamber 55 is provided with the filter water outlet pipe 61, the filter second air storage chamber 57, the filter third air storage chamber 59 and the filter fourth air storage chamber 53 are arranged in the first air storage chamber 55, the filter fourth layer shell 52 is fixedly connected with the filter outer cover plate 64, the filter outer cover plate 64 is fixedly connected with the filter middle partition plate 51, the filter inlet pipe 62 passes through the filter first layer shell 54 and the filter fourth layer shell 52 to be communicated with the filter fourth air storage chamber 53, and the filter outlet pipe 63 passes through the filter first layer shell 54 to be communicated with the filter first air storage chamber 55.

The purifier 7 comprises: the purifier comprises a purifier cover body 71, a purifier shell body 72, a purifier reaction chamber 73, a purifier air inlet 74, a purifier filter screen 75 and a metal wire filler 76, wherein the purifier reaction chamber 73 is arranged in the purifier shell body 72, a through hole is formed in the purifier cover body 71, and the upper port of the purifier shell body 72 is fixedly connected with the purifier cover body 71. The lower end of the purifier reaction chamber 73 is provided with a purifier air inlet 74, a purifier filter screen 75 is internally provided with a metal wire filler 76, the purifier filter screen 75 is arranged in the purifier reaction chamber 73, and the purifier filter screen 75 is communicated with the upper through hole of the purifier cover body 71.

The utility model relates to a beneficial effect of monomer economic benefits and social benefits straw gasification stove embodies:

1. in a single double-effect straw gasification furnace, a material dropping device and a cyclone are combined for air supply, the material dropping device can ignite the straws after being started for 2-3 minutes in a cold mode, the reaction is fast, the cyclone adopts an air equalizing structure, hot air passing through the material dropping device is fully contacted with the straws, the straw cracking and converting efficiency is guaranteed, the straws are burnt in parallel, the unit yield of combustible gas is large, and the flame height can reach 500 mm when 3 burners are used;

2. in a single double-effect straw gasification furnace, a multi-stage filter and a purifier are adopted for purification, the tar and moisture content in fuel gas is low, the flame is blue, continuous combustion is realized, no carbide is generated at the bottom of a boiler, and the phenomenon of blocking the furnace end can not occur after long-term use;

3. a monomer economic benefits and social benefits straw gasification stove can satisfy the winter heating needs of different house types in the north, and the harmful gas that produces of burning directly discharges through the flue, safe and reliable, and use and easy maintenance, can not bring secondary pollution for the harmful gas that tar burning produced.

Drawings

FIG. 1 is a schematic structural diagram of a single double-effect straw gasification furnace;

FIG. 2 is a cross-sectional view of the piece 2 of FIG. 1;

figure 3 is a partial cross-sectional view of the parts 1, 2, 3 of figure 1;

FIG. 4 is a cross-sectional view A-A of FIG. 1;

FIG. 5 is a cross-sectional view of the piece 5 of FIG. 1;

FIG. 6 is a cross-sectional view of the piece 7 of FIG. 1;

in the figure: 1. the cyclone dust collector comprises a furnace body, 101, a furnace cover, 102, a furnace cover handle, 103, a furnace body air outlet, 104, a furnace body partition plate, 2, a material dropping device, 21, a material dropping device outer shell, 22, a material dropping device air inlet, 23, a material dropping device reaction chamber, 24, a material dropping device air outlet, 25, a material dropping device heat preservation plug, 26, a resistance wire, 3, a fan, 4, a cyclone, 41, a cyclone air inlet pipe, 42, a cyclone outer shell, 43, a cyclone outer chamber, 44, a cyclone inner shell, 45, a cyclone inner chamber, 46, a cyclone first air deflector, 47, a cyclone second air deflector, 48, a cyclone third air deflector, 49, a cyclone bottom plate, 5, a filter, 51, a filter middle partition plate, 52, a filter fourth layer shell, 53, a filter fourth air storage chamber, 54, a filter first layer shell, 55, a filter first air storage chamber, 56, a filter second layer shell, 57, a filter, 58. the water heater comprises a third filter layer shell, 59 filter third air storage chamber, 61 filter water outlet pipe, 62 filter air inlet pipe, 63 filter air outlet pipe, 64 filter outer cover plate, 65 filter inner cover plate, 66 water, 6 oil collector, 7 purifier, 71 purifier cover body, 72 purifier shell, 73 purifier reaction chamber, 74 purifier air inlet, 75 purifier filter screen, 76 metal wire filler, 8 centrifugal separator, 9 gas collecting flow divider, 10 water heater, 11 water heater chimney pipe, 12 water heater inlet pipe, 13 water heater outlet pipe, 14 burner, 15 first valve, 16 second valve, 17 gas collecting flow divider first valve, 18 gas collecting flow divider second valve, 19 gas collecting flow divider third valve.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments, which are described herein for illustrative purposes only and are not intended to limit the present invention.

Referring to figures 1 and 3: a single double-effect straw gasification furnace comprises: the furnace body 1, the fan 3, the oil collector 6, the centrifugal separator 8, the gas collection flow divider 9, the water heater 10, the water heater chimney 11, the burner 14, the first valve 15, the second valve 16, the material dropping device 2, the cyclone 4, the filter 5 and the purifier 7, the gas outlet of the fan 3 is communicated with the material dropping device gas inlet 22 of the material dropping device 2, the material dropping device gas outlet 24 of the material dropping device 2 is communicated with the cyclone gas inlet pipe 41 of the cyclone 4, the bottom end face of the furnace body 1 is communicated with the upper end face of the cyclone 4, the furnace body gas outlet 103 of the furnace body 1 is communicated with the filter gas inlet pipe 62 of the filter 5, the filter water outlet pipe 61 of the filter 5 is communicated with the oil collector 6, the filter gas outlet pipe 63 of the filter 5 is communicated with the purifier gas inlet 74 of the purifier 7, the upper port of the filter screen 75 of the purifier 7 is, the gas collecting and distributing device is characterized in that a gas outlet of the centrifugal separator 8 is communicated with a gas inlet of a gas collecting and distributing device 9, a first valve 17 of the gas collecting and distributing device, a second valve 18 of the gas collecting and distributing device and a third valve 19 of the gas collecting and distributing device are respectively arranged on the gas collecting and distributing device 9, a gas outlet of the gas collecting and distributing device 9 is communicated with a combustor 14, a first valve 15 is arranged on a communication pipeline between the gas collecting and distributing device 9 and the combustor 14, a water heater 10 is arranged on the upper portion of the combustor 14, a pipeline communicated with a water heater chimney 11 is arranged on a connection pipeline between a gas outlet of the gas collecting and distributing device 9 and the first valve 15, and a second valve 16 is arranged on a communication pipeline between the water heater chimney 11 and the gas outlet.

Referring to FIG. 2: the material dispenser 2 comprises: the device comprises a material dotting device shell 21, a material dotting device air inlet 22, a material dotting device reaction chamber 23, a material dotting device air outlet 24, a material dotting device heat-insulating plug 25 and a resistance wire 26, wherein the material dotting device reaction chamber 23 is arranged in the material dotting device shell 21, the material dotting device heat-insulating plug 25 is arranged in the material dotting device reaction chamber 23, a through hole is formed in the material dotting device heat-insulating plug 25, the resistance wire 26 is arranged in the through hole in the material dotting device heat-insulating plug 25, the resistance wire 26 is connected with a power supply, and the material dotting device reaction chamber 23 is provided with the material.

Referring to FIG. 4: the cyclone 4 comprises: the cyclone air inlet pipe 41 is fixedly connected with the cyclone outer shell 42 and the cyclone inner shell 44, the cyclone 41 end in the cyclone inner chamber 45 is fixedly connected with the cyclone first air deflector 46, the cyclone inner shell 46, the cyclone second air deflector 47, the cyclone third air deflector 48 and the cyclone bottom plate 49 respectively, A cyclone second air deflection plate 47 and a cyclone third air deflection plate 48.

Referring to FIG. 5: the filter 5 comprises: a filter middle partition plate 51, a filter fourth layer shell 52, a filter fourth air storage chamber 53, a filter first layer shell 54, a filter first air storage chamber 55, a filter second layer shell 56, a filter second air storage chamber 57, a filter third layer shell 58, a filter third air storage chamber 59, a filter water outlet pipe 61, a filter air inlet pipe 62, a filter air outlet pipe 63, a filter outer cover plate 64 and a filter inner cover plate 65, wherein a group of through holes are arranged on the filter middle partition plate 51, the filter fourth air storage chamber 53 is arranged in the filter fourth layer shell 52, the filter middle partition plate 51 is arranged in the filter fourth air storage chamber 53, the filter third air storage chamber 59 is arranged between the filter third layer shell 58 and the filter fourth layer shell 52, the filter third layer shell 58 is provided with a group of through holes, the filter second air storage chamber 57 is arranged between the filter second layer shell 56 and the filter third layer shell 58, the filter inner cover plate 65 penetrates through the filter fourth layer shell 52, the filter second layer shell 56 and the filter third layer shell 58 to seal the upper ports of the filter second air storage chamber 57 and the filter third air storage chamber 59, the lower ports of the filter fourth air storage chamber 53, the filter second air storage chamber 57 and the filter third air storage chamber 59 are open, the filter first air storage chamber 55 is arranged in the filter first layer shell 54, the upper port of the filter first air storage chamber 55 is sealed by the first layer shell 54 and the filter outer cover plate 64, the lower end of the filter first air storage chamber 55 is provided with the filter water outlet pipe 61, the filter second air storage chamber 57, the filter third air storage chamber 59 and the filter fourth air storage chamber 53 are arranged in the first air storage chamber 55, the filter fourth layer shell 52 is fixedly connected with the filter outer cover plate 64, the filter outer cover plate 64 is fixedly connected with the filter middle partition plate 51, the filter inlet pipe 62 passes through the filter first layer shell 54 and the filter fourth layer shell 52 to be communicated with the filter fourth air storage chamber 53, and the filter outlet pipe 63 passes through the filter first layer shell 54 to be communicated with the filter first air storage chamber 55.

Referring to FIG. 6: the purifier 7 comprises: the purifier comprises a purifier cover body 71, a purifier shell body 72, a purifier reaction chamber 73, a purifier air inlet 74, a purifier filter screen 75 and a metal wire filler 76, wherein the purifier reaction chamber 73 is arranged in the purifier shell body 72, a through hole is formed in the purifier cover body 71, and the upper port of the purifier shell body 72 is fixedly connected with the purifier cover body 71. The lower end of the purifier reaction chamber 73 is provided with a purifier air inlet 74, a purifier filter screen 75 is internally provided with a metal wire filler 76, the purifier filter screen 75 is arranged in the purifier reaction chamber 73, and the purifier filter screen 75 is communicated with the upper through hole of the purifier cover body 71.

The implementation mode is as follows:

injecting water into the filter, the water level exceeds the lower end face of the second layer of the shell of the filter, holding a handle of the furnace cover, opening the furnace cover, compacting straws into the furnace body, tightly covering the furnace cover, closing a first valve 15, a first valve 17 of a gas collecting flow divider, a second valve 18 of the gas collecting flow divider, a third valve 19 of the gas collecting flow divider, opening a second valve 16, electrifying resistance wires in a heat preservation plug of a material igniter, respectively starting a fan 3 and a centrifugal separator 8, uniformly distributing hot air heated by the resistance wires by the fan 3 through a cyclone 4, uniformly entering the furnace body from the bottom of the furnace body through a group of through holes in a partition plate of the furnace body, cracking the straws by high-temperature gas to generate combustible gas, enabling the combustible gas to enter the gas collecting flow divider 9 through the filter 5 and the purifier 7, and beginning to generate impure combustible gas containing smoke, and then being discharged from a chimney pipe of the water heater through, after 5 minutes, the flue gas is exhausted, the second valve 16 is closed, the first valve 15 is opened, the burner 14 is ignited, the water heater 10 is heated, water is fed from the water inlet pipe 12 of the water heater, hot water is supplied from the water outlet pipe 13 of the water heater, heat is supplied to a user, and combustible gas is supplied when the first valve 17 of the gas collecting flow divider, the second valve 18 of the gas collecting flow divider and the third valve 19 of the gas collecting flow divider are opened if other requirements exist.

The above description is only a preferred mode of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims (5)

1. A single double-effect straw gasification furnace comprises: furnace body (1), fan (3), oil collector (6), centrifugation extension (8), gas collection shunt (9), water heater (10), water heater chimney pipe (11), combustor (14), first valve (15), second valve (16), characterized by, it still includes: point glassware (2), cyclone (4), filter (5), clarifier (7), the gas outlet of fan (3) and the point glassware air inlet (22) intercommunication of point glassware (2), point glassware gas outlet (24) and the cyclone intake pipe (41) intercommunication of cyclone (4) of point glassware (2), the bottom end face of furnace body (1) and the up end intercommunication of cyclone (4), furnace body gas outlet (103) and the filter intake pipe (62) intercommunication of filter (5) of furnace body (1), filter outlet pipe (61) and the oil collector (6) intercommunication of filter (5), the filter outlet duct (63) of filter (5) and the clarifier air inlet (74) intercommunication of clarifier (7), the port and the centrifuge extension (8) air inlet intercommunication on the clarifier filter screen (75) of clarifier (7), the gas collection distributor is characterized in that a gas outlet of the centrifugal separator (8) is communicated with a gas inlet of the gas collection distributor (9), a first valve (17) of the gas collection distributor, a second valve (18) of the gas collection distributor and a third valve (19) of the gas collection distributor are respectively arranged on the gas collection distributor (9), a gas outlet of the gas collection distributor (9) is communicated with a burner (14), a first valve (15) is arranged on a communication pipeline of the gas collection distributor (9) and the burner (14), a water heater (10) is arranged on the upper portion of the burner (14), a pipeline is arranged on a pipeline between a gas outlet of the gas collection distributor (9) and the first valve (15) and communicated with a water heater chimney pipe (11), and a second valve (16) is arranged on a communication pipeline between the water heater chimney pipe (11) and the gas outlet of the gas collection distributor (9).

2. The single double-effect straw gasification furnace as claimed in claim 1, wherein the material dropping device (2) comprises: some glassware shell (21), some glassware air inlet (22), some glassware reacting chamber (23), some glassware gas outlet (24), some glassware heat preservation stopper (25), resistance wire (26) some glassware reacting chamber (23) are established in some glassware shell (21) point glassware reacting chamber (23) in set up some glassware heat preservation stopper (25) point glassware heat preservation stopper (25) on be equipped with the through-hole, resistance wire (26) set up in the through-hole on some glassware heat preservation stopper (25), resistance wire (26) be connected with the power, some glassware reacting chamber (23) be equipped with some glassware air inlet (22) and some glassware gas outlet (24).

3. The single body double effect straw gasification furnace according to claim 1, wherein the cyclone (4) comprises: the cyclone separator comprises a cyclone air inlet pipe (41), a cyclone outer shell (42), a cyclone outer chamber (43), a cyclone inner shell (44), a cyclone inner chamber (45), a cyclone first air deflector (46), a cyclone second air deflector (47), a cyclone third air deflector (48) and a cyclone bottom plate (49), wherein the cyclone inner shell (44) is internally provided with the cyclone inner chamber (45), the cyclone outer chamber (43) is arranged between the cyclone outer shell (42) and the cyclone inner shell (44), the upper part of the cyclone inner chamber (45) is opened, the lower part of the cyclone inner chamber is sealed by the cyclone bottom plate (49), the cyclone outer chamber (43) is sealed, the cyclone air inlet pipe (41) penetrates through the cyclone outer shell (42), the cyclone outer chamber (43) and the cyclone inner shell (44) to be communicated with the cyclone inner chamber (45), and the cyclone air inlet pipe (41) and the cyclone outer shell (42), The cyclone inner shell (44) is fixedly connected, and in the cyclone inner chamber (45), the cyclone air inlet pipe (41) end is fixedly connected with a cyclone first air deflector (46), a cyclone second air deflector (47) and a cyclone third air deflector (48) respectively.

4. The single double-effect straw gasification furnace as claimed in claim 1, wherein the filter (5) comprises: a filter middle clapboard (51), a filter fourth-layer shell (52), a filter fourth air storage chamber (53), a filter first-layer shell (54), a filter first air storage chamber (55), a filter second-layer shell (56), a filter second air storage chamber (57), a filter third-layer shell (58), a filter third air storage chamber (59), a filter water outlet pipe (61), a filter air inlet pipe (62), a filter air outlet pipe (63), a filter outer cover plate (64) and a filter inner cover plate (65), wherein a group of through holes are arranged on the filter middle clapboard (51), the filter fourth air storage chamber (53) is arranged in the filter fourth-layer shell (52), the filter middle clapboard (51) is arranged in the filter fourth air storage chamber (53), and the filter third air storage chamber (59) is arranged between the filter third-layer shell (58) and the filter fourth-layer shell (52), the filter is characterized in that a group of through holes are formed in the third filter layer shell (58), a second filter air storage chamber (57) is arranged between the second filter layer shell (56) and the third filter layer shell (58), the inner filter cover plate (65) penetrates through the fourth filter layer shell (52), the second filter layer shell (56) and the third filter layer shell (58) to seal the upper ports of the second filter air storage chamber (57) and the third filter air storage chamber (59), the lower ports of the fourth filter air storage chamber (53), the second filter air storage chamber (57) and the third filter air storage chamber (59) are open, a first filter air storage chamber (55) is arranged in the first filter layer shell (54), the first layer shell (54) and the outer filter cover plate (64) seal the upper port of the first filter air storage chamber (55), the filter is characterized in that a filter water outlet pipe (61) is arranged at the lower end of the first filter air storage chamber (55), the second filter air storage chamber (57), the third filter air storage chamber (59) and the fourth filter air storage chamber (53) are arranged in the first air storage chamber (55), the fourth filter layer shell (52) is fixedly connected with an outer filter cover plate (64), the outer filter cover plate (64) is fixedly connected with a middle filter partition plate (51), a filter air inlet pipe (62) penetrates through the first filter layer shell (54) and the fourth filter layer shell (52) to be communicated with the fourth filter air storage chamber (53), and a filter air outlet pipe (63) penetrates through the first filter layer shell (54) to be communicated with the first filter air storage chamber (55).

5. The single body double effect straw gasification furnace as claimed in claim 1, wherein the purifier (7) comprises: purifier lid (71), purifier casing (72), purifier reaction chamber (73), purifier air inlet (74), purifier filter screen (75), wire filler (76) purifier casing (72) in set up purifier reaction chamber (73) purifier lid (71) on be equipped with the through-hole, purifier casing (72) go up the port and link firmly with purifier lid (71), purifier reaction chamber (73) lower extreme be equipped with purifier air inlet (74), purifier filter screen (75) in set up wire filler (76), purifier filter screen (75) set up in purifier reaction chamber (73), purifier filter screen (75) and purifier lid (71) on the through-hole intercommunication.

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