CN214167849U - Updraft straw gasification furnace with overhead material pulling device - Google Patents

Abstract

The utility model discloses an updraft type straw gasification furnace with an overhead material puller, comprising a material puller driving device, a storage bin and a refractory material furnace chamber, wherein the top of the storage bin is fixedly provided with a furnace cover, and the top of the furnace cover is fixedly provided with the material puller driving device, and an output shaft of the material puller driving device is fixedly provided with an aligning coupler. This updraft type straw gasification furnace of overhead material puller sets up the double-deck grate of horizontal through the bottom at refractory material furnace, will pull out the material ware and arrange the top of gasification furnace in, pull out the critical department that the material blade is in the zone of heating in the stove and gasification zone, because cross-sectional area such as biomass fuel's limit, arris, angle is less, easily burns, and the limit edges and corners is burnt back, and the geometry of living beings becomes slick and sly, and it becomes easy to touch to pull out the material ware blade and take place to shift, and the rotation resistance reduces, and the hole that link up can in time be closed.

Description

Updraft straw gasification furnace with overhead material pulling device

Technical Field

The utility model belongs to the technical field of the gasifier, concretely relates to overhead straw gasifier of pulling out glassware.

Background

With the enhancement of the environmental protection system in China, the straw gasification industry is also developed rapidly. The straw fuel gas is used in the production fields of power generation, industrial kilns, boiler heat supply and the like, and has good effect. However, due to the differences in density, geometry, moisture content, etc. of biomass materials, especially the temperature differences between the place where the produced fuel gas flows with a temperature of more than 300 ℃ before being output from the furnace mouth and other places, etc., the fuel in the furnace can be unevenly combusted. Holes appear when the fuel is depleted at the faster burning location. After the pores are formed, air as a combustion improver directly passes through the pores.

This phenomenon increases air and carbon dioxide in the fuel gas when the amount of the fuel gas is small, reduces the content of combustible gas in the fuel gas, and causes explosion when the amount of the fuel gas is large. Therefore, technical measures for stirring the fuel in the straw gasification furnace to eliminate holes are indispensable. The common stalk gasification furnace adopts a tower type grate which is arranged below, and the rotary grate has the functions of deslagging and closing holes. However, if the grate does not rotate, holes are formed in the fuel in the furnace, and if the grate rotates, unburned charcoal is discharged along with slag due to the uneven combustion characteristic of the fuel in the furnace, so that fuel is wasted and gasification efficiency is reduced. In order to improve the straw gasification technology, an updraft straw gasification furnace with an upper pulling material is provided to solve the problems.

Disclosure of Invention

To the not enough of prior art, the utility model provides an updraft type straw gasification furnace of overhead pulling out glassware has advantages such as guarantee that the fuel burning is even, improve combustion efficiency, has solved the problem of proposing among the above-mentioned background art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: an updraft straw gasification furnace with an overhead material puller comprises a material puller driving device, a storage bin and a refractory material hearth, wherein the top of the storage bin is fixedly provided with a furnace cover, the top of the furnace cover is fixedly provided with a material puller driving device, an output shaft of the material puller driving device is fixedly provided with an aligning coupler, one end of the aligning coupler is fixedly provided with a material puller main shaft, the upper end of the material puller main shaft is provided with a bearing frame, the upper end of the bearing frame is provided with a sealing packing, the bearing frame is fixedly connected with the furnace cover, the lower part outside the material puller main shaft is fixedly provided with a material puller blade, the top of the furnace cover is fixedly provided with a star-shaped feeder, a filter screen is arranged above the interior of the storage bin, the interior of the storage bin is filled with a biomass material at the top of the filter screen, and the peripheral side of the storage bin is provided with air distribution holes, the outer part of the storage bin is fixedly provided with a gas collecting ring, the side surface of the gas collecting ring is provided with a gas outlet, the bottom of the storage bin is fixedly provided with a refractory material furnace chamber, the outer part of the refractory material furnace chamber is provided with an air heating chamber, the bottom of the air heating chamber is provided with third air inlets which are uniformly distributed, the outer side of the air heating chamber is fixedly provided with an air preheating sleeve, the bottom of the air preheating sleeve is provided with first air inlets which are uniformly distributed, the upper part of the outer side of the air heating chamber is provided with second air inlets which are uniformly distributed, the bottom end of the refractory material furnace chamber is provided with an upper grate, the bottom of the upper grate is provided with a lower grate, the inner parts of the lower grate and the upper grate are provided with triangular grate bars with big top and small bottom, the horizontal positions of the lower grate and the upper grate are staggered by the distance of one grate bar, and the inner part of the refractory material furnace chamber is filled with charcoal, the bottom fixed mounting of lower grate has steam generator, and the week side fixed mounting of lower grate has evenly distributed's steam release pipe, the bottom fixed mounting of air heating chamber has the storage ash storehouse.

Furthermore, the both ends of storage silo and the both ends of bell, air heating chamber and the equal fixed mounting in top of refractory material furnace, storage ash bin have flange, and storage silo, bell, refractory material furnace, air heating chamber and storage ash bin pass through flange fixed connection.

Further, the air distribution holes are uniformly distributed on the periphery of the storage bin, the air distribution holes and the filter screen are at the same height, and the air distribution holes are located on the inner side of the air collection ring.

Further, the shape of the refractory material hearth is conical, and the diameter value of the top of the refractory material hearth is larger than that of the bottom of the refractory material hearth.

Further, the front of storing the ash storehouse is provided with ash door, the below fixed mounting that stores ash storehouse week side has evenly distributed's backup pad.

Further, the right side fixed mounting who stores the ash storehouse has the moisturizing pipe, and there is steam generator fixed connection moisturizing pipe's one end, moisturizing pipe's other end fixed mounting has the moisturizing fill.

Has the advantages that:

1. this updraft type straw gasification furnace of overhead material puller, through set up the double-deck grate of horizontal formula in the bottom of refractory material furnace, will pull out the material and arrange the top of gasification furnace in, it is in the heating zone in the stove and the critical department in gasification zone to pull out the material blade, because cross-sectional area such as biomass fuel's limit, arris, angle is less, easily burn, limit edges and corners is burnt back, the geometry of living beings becomes slick and sly, it takes place to shift and becomes easy to touch to pull out the material blade, the rolling resistance reduces, the hole that link up can in time be closed, in addition will pull out the material blade and arrange this department in, also protect the charcoal layer that has formed not suffered destruction, thereby guarantee the quality of the gas of producing.

2. The updraft straw gasification furnace with the upper material puller is characterized in that a lower grate and an upper grate are arranged at the bottom of a fire-resistant material hearth, triangular fire bars with large upper parts and small lower parts are arranged inside the lower grate and the upper grate, the lower grate and the upper grate are horizontally staggered by a fire bar interval, when the particle size of charcoal on the upper grate is smaller than the half fire bar interval, one part of the charcoal can directly fall off, and the charcoal with the particle size of a plurality of parts smaller than the half fire bar interval has the characteristic of a gathering shed frame and still can not pass through the upper grate, because the charcoal is positioned above the grate and is firstly contacted with oxygen, the gasification speed is higher, when the particle size of the charcoal with smaller particle size is reduced again, the original gathering shed frame state is changed, the charcoal falls into an ash bin from gaps of the grate in time, the charcoal with smaller particle size falls into the ash bin, and the heat is released under the action of air, the water in the steam generator can be heated by the released heat to be changed into steam, and the steam participates in gasification reaction, so that the content of combustible gas is increased.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the refractory hearth and the ash storage bin of the present invention;

FIG. 3 is a schematic structural view of the interior of the storage silo of the present invention;

FIG. 4 is a schematic structural view of a lower section of the kick-out device driving device of the present invention;

fig. 5 is a schematic structural view of the upper grate and the lower grate section of the present invention.

In the figure: 1. a kick-out device driving device; 2. a self-aligning coupling; 3. a bearing bracket; 4. a furnace cover; 5. a storage bin; 6. a biomass material; 7. a filter screen; 8. distributing air holes; 9. a gas collecting ring; 10. an air outlet; 11. charcoal; 12. a refractory hearth; 13. an air heating chamber; 14. a second air inlet; 15. a third air inlet; 16. a first air inlet; 17. a lower grate; 18. storing the ash bin; 19. a star-shaped feeder; 20. a kick-out device main shaft; 21. a kick-out blade; 22. an air preheating sleeve; 23. a dust bin door; 24. sealing the packing; 25. an upper grate; 26. a steam release pipe; 27. a steam generator; 28. a water replenishing pipe; 29. a water replenishing bucket.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 to 5, the present invention provides a technical solution: an updraft straw gasification furnace with a top material puller comprises a material puller driving device 1, a storage bin 5 and a refractory material hearth 12, wherein a furnace cover 4 is fixedly installed at the top of the storage bin 5, a material puller driving device 1 is fixedly installed at the top of the furnace cover 4, a self-aligning coupling 2 is fixedly installed on an output shaft of the material puller driving device 1, a material puller main shaft 20 is fixedly installed at one end of the self-aligning coupling 2, a bearing frame 3 is arranged at the upper end of the material puller main shaft 20, a sealing packing 24 is arranged at the upper end of the bearing frame 3, the bearing frame 3 is fixedly connected with the furnace cover 4, a material puller blade 21 is fixedly installed below the outer part of the material puller main shaft 20, a horizontal double-layer grate is arranged at the bottom of the refractory material hearth 12, the material puller is arranged above the gasification furnace, the material puller blade is positioned at the critical position of a heating area and a gasification area in the furnace, and the edge of biomass fuel is positioned at the critical position of the heating area and the gasification area, Edges, corners and other cross sections are smaller, the combustion is easy, after edges and corners are combusted, the geometric shape of biomass becomes smooth, the displacement is easy when the edges and corners are touched by a material pulling device blade, the rotation resistance is reduced, a through hole can be closed in time, in addition, the material pulling blade is arranged at the position to protect a formed carbon layer from being damaged, so the quality of produced gas is ensured, a star-shaped feeder 19 is fixedly arranged at the top of a furnace cover 4, a filter screen 7 is arranged above the inside of a storage bin 5, the inside of the storage bin 5 is filled with biomass materials 6 positioned at the top of the filter screen 7, air distribution holes 8 are arranged on the peripheral side of the storage bin 5, a gas collection ring 9 is fixedly arranged outside the storage bin 5, an air outlet 10 is arranged on the side surface of the gas collection ring 9, the air distribution holes 8 are uniformly distributed on the peripheral side of the storage bin 5, the air distribution holes 8 and the filter screen 7 are positioned at the same height, and the air distribution holes 8 are positioned on the inner side of the gas collection ring 9, the generated fuel gas enters the gas collecting ring 9 through the filter screen 7 via the gas distribution hole 8, the quality of the fuel gas is improved, the gas distribution hole 8 is uniformly distributed on the periphery of the storage bin 5, the efficiency of the fuel gas generation is improved, the bottom of the storage bin 5 is fixedly provided with a refractory material hearth 12, the outside of the refractory material hearth 12 is provided with an air heating chamber 13, the bottom of the air heating chamber 13 is provided with third air inlets 15 which are uniformly distributed, the outside of the air heating chamber 13 is fixedly provided with an air preheating sleeve 22, the bottom of the air preheating sleeve 22 is provided with first air inlets 16 which are uniformly distributed, the upper part of the outside of the air heating chamber 13 is provided with second air inlets 14 which are uniformly distributed, the bottom end of the refractory material hearth 12 is provided with an upper grate 25, the bottom of the upper grate 25 is provided with a lower grate 17, the lower grate 17 and the inside of the upper grate 25 are both provided with triangular grate bars with a large upper part and a small part, the horizontal position of the lower grate 17 and the upper grate 25 is staggered by a grate bar distance, the interior of the refractory material hearth 12 is filled with charcoal 11, the shape of the refractory material hearth 12 is conical, the diameter value of the top of the refractory material hearth 12 is larger than that of the bottom, the whole shape of the refractory material hearth 12 is conical, the burnt charcoal ash in the refractory material hearth 12 can fall through the lower grate 17 and the upper grate bar 25 to be convenient for cleaning the charcoal ash, the bottom of the lower grate 17 is fixedly provided with a steam generator 27, the peripheral side of the lower grate 17 is fixedly provided with a steam release pipe 26 which is uniformly distributed, the bottom of the air heating chamber 13 is fixedly provided with an ash storage bin 18, the lower grate 17 and the upper grate bar 25 are arranged at the bottom of the refractory material hearth 12, the triangular grate bars with a large upper part and a small lower part are arranged in the lower grate 17 and the upper grate bar 25, and the lower grate 17 and the upper grate bar distance is staggered horizontally, when the particle size of the charcoal on the upper grate 25 is smaller than the half of the grate bar distance, one part can directly fall, and the charcoal with the particle size of the multiple parts being smaller than the half of the grate bar distance has the characteristic of gathering shelves and still can not pass through the upper grate 25, because the charcoal is positioned above the grate and is firstly contacted with oxygen, the gasification speed is faster, when the particle size of the charcoal with smaller particle size is reduced again, the state of the original gathering shelves is changed, the charcoal falls into the ash bin from the gap of the upper grate 25 in time, the right side of the ash storage bin 18 is fixedly provided with a water replenishing pipe 28, one end of the water replenishing pipe 28 is fixedly connected with a steam generator 27, the other end of the water replenishing pipe 28 is fixedly provided with a water replenishing hopper 29, the charcoal with smaller particle size and less falling into the ash bin emits heat under the action of air to completely turn into ash, and the emitted heat can heat the water in the steam generator 27, the device is changed into steam to participate in gasification reaction and improve the content of combustible gas, two ends of a storage bin 5 are fixedly connected with a furnace cover 4, two ends of an air heating chamber 13, two ends of a refractory material hearth 12 and the top end of a storage ash bin 18 through connecting flanges, the storage bin 5, the furnace cover 4, the refractory material hearth 12, the air heating chamber 13 and the storage ash bin 18 are fixedly connected through the connecting flanges, all structures of the device are connected through the connecting flanges, the overall strength of the device is ensured, meanwhile, the device is convenient to disassemble and maintain through the connection of the connecting flanges, an ash bin door 23 is arranged on the front surface of the storage ash bin 18, uniformly distributed supporting plates are fixedly arranged below the peripheral side of the storage ash bin 18, the ash bin door 23 is arranged on the front surface of the storage ash bin 18, carbon ash stored in the storage ash bin 18 is convenient to clean, and the uniformly distributed supporting plates are fixedly arranged on the peripheral side of the storage ash bin 18, the stability of the device during operation has been improved.

In summary, when the updraft straw gasification furnace with the overhead material puller is used, the biomass material 6 enters the storage bin 5 through the star-shaped feeder 19, and along with the gasification consumption of the charcoal 11 in the refractory material hearth 12, the biomass material 6 in the upper storage bin 5 automatically moves downwards due to gravity, so that the gasification furnace is continuously fed and continuously operates; air as a gasifying agent enters the hearth 12 of the refractory material through the air preheating sleeve 22, the air heating chamber 13, the lower grate 17 and the upper grate 25 to participate in gasification reaction; the generated fuel gas enters a gas collecting ring 9 through a filter screen 7 via a gas distribution hole 8, and then enters a next device such as a purifier after exiting from a gas outlet 10; through pulling out the glassware and rotating, the setting out glassware blade 21 can be closed the hole, eliminate the hole and produce, guarantee gasifier normal operating, steam generator 27 that is located the grate lower part is under the effect of storage ash storehouse 18 waste heat, become water steam, make steam and air mix through steam release pipe 26, and go into in refractory material furnace 12, make water and charcoal reaction generate carbon monoxide and hydrogen, thereby improve the gas calorific value, leave the gap after lower grate 17 overlaps with last grate 25, the fluid power that the air produced when passing through, and the gasification of air to the charcoal, can change the original gesture of detaining slag and tiny charcoal granule in the gap, make it fall from the grate gap at the in-process that changes, can.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides an updraft type straw gasification furnace with a top-mounted material puller, which comprises a material puller driving device (1), a storage bin (5) and a refractory material hearth (12), and is characterized in that: the top of the storage bin (5) is fixedly provided with a furnace cover (4), the top of the furnace cover (4) is fixedly provided with a kick-out device driving device (1), an output shaft of the kick-out device driving device (1) is fixedly provided with an aligning coupler (2), one end of the aligning coupler (2) is fixedly provided with a kick-out device main shaft (20), the upper end of the kick-out device main shaft (20) is provided with a bearing frame (3), the upper end of the bearing frame (3) is provided with a sealing packing (24), the bearing frame (3) is fixedly connected with the furnace cover (4), the lower part outside the kick-out device main shaft (20) is fixedly provided with a kick-out device blade (21), the top of the furnace cover (4) is fixedly provided with a star-shaped feeder (19), the upper part inside the storage bin (5) is provided with a filter screen (7), and the inside of the storage bin (5) is filled with a biomass material (6) positioned at the top of the filter screen (7), the air distribution hole (8) is formed in the peripheral side of the storage bin (5), the air collection ring (9) is fixedly mounted on the outer portion of the storage bin (5), the air outlet (10) is formed in the side face of the air collection ring (9), the refractory material hearth (12) is fixedly mounted at the bottom of the storage bin (5), the air heating chamber (13) is formed in the outer portion of the refractory material hearth (12), the third air inlet (15) which is uniformly distributed is formed in the bottom of the air heating chamber (13), the air preheating sleeve (22) is fixedly mounted on the outer side of the air heating chamber (13), the first air inlet (16) which is uniformly distributed is formed in the bottom of the air preheating sleeve (22), the second air inlet (14) which is uniformly distributed is formed in the upper portion of the outer side of the air heating chamber (13), and the upper grate (25) is arranged at the bottom end of the refractory material hearth (12), and the bottom of going up grate (25) is provided with down grate (17), big-end-up's triangle-shaped fire bars have all been seted up with the inside of last grate (25) down grate (17), the interval of a fire bar is staggered with last grate (25) horizontal position down grate (17), the inside packing of refractory material furnace (12) has charcoal (11), the bottom fixed mounting of lower grate (17) has steam generator (27), and the week side fixed mounting of lower grate (17) has evenly distributed's steam release pipe (26), the bottom fixed mounting of air heating chamber (13) has storage ash bin (18).

2. The updraught straw gasification furnace with an overhead discharger according to claim 1, wherein: the two ends of the storage bin (5) are fixedly connected with the two ends of the furnace cover (4), the air heating chamber (13), the two ends of the fireproof material hearth (12) and the top end of the ash storage bin (18) through connecting flanges, and the storage bin (5), the furnace cover (4), the fireproof material hearth (12), the air heating chamber (13) and the ash storage bin (18) are fixedly connected through the connecting flanges.

3. The updraught straw gasification furnace with an overhead discharger according to claim 1, wherein: the air distribution holes (8) are uniformly distributed on the periphery of the storage bin (5), the air distribution holes (8) and the filter screen (7) are at the same height, and the air distribution holes (8) are located on the inner side of the air collection ring (9).

4. The updraught straw gasification furnace with an overhead discharger according to claim 1, wherein: the shape of the refractory material hearth (12) is conical, and the diameter value of the top of the refractory material hearth (12) is larger than that of the bottom of the refractory material hearth.

5. The updraught straw gasification furnace with an overhead discharger according to claim 1, wherein: the front of storing ash storehouse (18) is provided with ash door (23), the below fixed mounting who stores ash storehouse (18) week side has evenly distributed's backup pad.

6. The updraught straw gasification furnace with an overhead discharger according to claim 1, wherein: the right side fixed mounting who stores up ash bin (18) has moisturizing pipe (28), and there is steam generator (27) fixed connection moisturizing pipe (28) one end, moisturizing pipe (28)'s other end fixed mounting has moisturizing fill (29).

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