Multifunctional biomass gasification furnace

Abstract

The invention discloses a multifunctional biomass gasification furnace, and relates to the technical field of biomass gas supply, the biomass gasification furnace comprises a furnace body, a cleaning device, a recovery device, a partition plate, a gasification agent pipe and a gas pipe, a working chamber is arranged on the furnace body, the partition plate is arranged in the working chamber, the partition plate divides the working chamber into a recovery cavity and a gasification cavity, and the gas pipe is arranged in the recovery cavity; the cleaning device is arranged at the bottom of the gasification cavity, the discharging end of the cleaning device faces the recovery cavity, the recovery device is arranged in the recovery cavity, an outlet of the gasification agent pipe is communicated with a gasification cavity pipeline, and an inlet of the gas pipe is communicated with the gasification cavity pipeline. The furnace body serves as a main supporting foundation and is used for installing and fixing other devices, generated furnace slag is automatically cleaned through the cleaning device, heat of the furnace slag is automatically recycled through the recycling device, and the working chamber is separated through the partition plate, so that function division in the furnace body is achieved, and it is ensured that the gasification process is efficiently conducted.

Description

Technical Field

[0001] The present invention relates to the technical field of biomass gas supply, and specifically relates to a multifunctional biomass gasifier. Background Art

[0002] A biomass gasifier is generally used to pyrolyze and gasify crushed biomass fuel under anoxic conditions to obtain biomass gas for reuse.

[0003] Currently, during the use of a biomass gasifier, a large amount of slag is generated. Most gasifiers use the method of adding water to cool the slag to ensure safety after the slag is discharged. However, after the reaction is completed, the slag still has a relatively high temperature. By adding water to cool it, not only the waste heat of the slag itself is wasted, but also the waste of water resources is increased, which does not conform to the environmental protection concept.

[0004] In addition, due to the diversity of biomass fuel types and the inability to ensure the stability of the entire process during the reaction, the waste heat recovery process lacks flexibility and the recovery quality cannot be guaranteed. Summary of the Invention

[0005] The purpose of the present invention is to provide a multifunctional biomass gasifier to solve the problems raised in the prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] The biomass gasifier includes a furnace body, a cleaning device, a recovery device, a partition board, a gasifying agent pipe, and a gas pipe. A working chamber is provided on the furnace body. The partition board is placed in the working chamber and divides the working chamber into a recovery chamber and a gasification chamber. The cleaning device is placed at the bottom of the gasification chamber, and the discharge end of the cleaning device faces the recovery chamber. The recovery device is placed in the recovery chamber. The outlet of the gasifying agent pipe is connected to the gasification chamber through a pipeline, and the inlet of the gas pipe is connected to the gasification chamber through a pipeline.

[0008] The furnace body is used as the main supporting foundation for the installation and fixation of other devices. The generated slag is automatically cleaned by the cleaning device, and the heat of the slag is automatically recovered by the recovery device. The working room is separated by partition boards to realize the functional division inside the furnace body and ensure the efficient gasification process. The gasification chamber is used for biomass gasification, and the recovery chamber is used to recover the waste heat of slag to improve energy utilization. The gasification chamber is divided into a drying layer, a pyrolysis layer, a reduction reaction zone and an oxidation reaction zone. After entering the gasification chamber, the biomass enters the drying layer and evaporates water by heat. The biomass enters the pyrolysis layer and decomposes into volatile tar, carbon monoxide and methane, coke and a small amount of ash in an oxygen-deficient environment; in the oxidation layer, the gasifier is injected through the gasifier pipe, and the coke and oxygen undergo a violent oxidation reaction, releasing a large amount of heat to maintain a high temperature environment; in the reduction layer, carbon dioxide and water react with coke at high temperature to generate carbon monoxide and hydrogen, which are the main components of the generated fuel gas, and are finally exported through the fuel gas pipe.

[0009] Furthermore, a feed port is provided on the furnace body, the feed port is connected to the gasification chamber, and the feed port is located at the upper end of the cleaning device;

[0010] The cleaning device comprises a mounting plate and a guide plate, the mounting plate is firmly connected to the wall of the gasification chamber, a burner is arranged on the mounting plate, a plurality of through holes are arranged on the mounting plate, a guide plate is arranged at an angle at the lower end of the mounting plate.

[0011] A feed port is provided for guiding biomass and transporting the biomass to a gasification chamber for processing. A burner is provided to carbonize the biomass. A cleaning device is placed at the lower end of the feed port so that the slag remaining after the reaction is completed falls through the through hole on the mounting plate onto the guide plate. The guide plate is arranged obliquely to guide the slag for subsequent processing.

[0012] Furthermore, a hoist is provided at the end of the guide plate, and the recovery device includes a plurality of condensation plates, which are arranged in sequence along the vertical direction of the recovery chamber, the feed end of the hoist faces the lower end of the guide plate, and the discharge end of the hoist faces the uppermost condensation plate;

[0013] A plurality of perforations are arranged on the condensation plate, and a circulation flow channel is arranged along the circumference of the perforations.

[0014] By setting up an elevator, such as a screw conveyor, the inlet end is located below the guide plate, and the terminal end passes through the groove on the partition plate to guide the slag to the uppermost condensation plate. The circulating water in the circulating flow channel can absorb the heat carried by the slag through the perforations to improve the heat recovery rate of the slag. The perforations are arranged in a staggered manner to improve the heat recovery quality when the slag passes between the condensation plates. The end of the circulating flow channel is connected to a heat pump to cool the circulating water. The recovered heat can be used for winter heating, etc.

[0015] Further, the recycling device further includes an adjusting component. The adjusting component includes a substrate, on which a guiding groove is provided. The guiding groove is adapted to the perforations, and the perforations are arranged in an array centered on the condensing plate. A deflection groove is provided on the furnace body, and the substrate is rotatably connected to the deflection groove. The adjacent circulation channels are sequentially communicated;

[0016] When the temperature is too high: the overlapping area between the guiding groove and the perforations decreases.

[0017] By providing the substrate and placing it on the upper side of the condensing plate, the slag conveyed by the elevator first falls on the substrate and then falls along the guiding groove under the action of gravity. The guiding groove and the perforation structure are adapted. In the initial state, the overlapping area between the guiding groove and the perforations gradually increases from top to bottom, so that as the slag falls, the recoverable heat in it gradually decreases. By increasing the overlapping area, the residence time is reduced to prevent blockage at the lower end. At the same time, the flow direction of the circulating water is from bottom to top and flows out from the uppermost circulation channel. By heating layer by layer, the recycling quality is improved.

[0018] Further, the adjusting component further includes a limiting piece and a stretching piece. A temperature sensing cavity is provided on the substrate. The limiting piece and the stretching piece are placed in the temperature sensing cavity. The limiting piece and the stretching piece are firmly connected. One end of the limiting piece and the stretching piece contacts the wall surface of the guiding groove, and the coefficient of thermal expansion of the limiting piece is less than that of the stretching piece.

[0019] By providing the temperature sensing cavity to install the limiting piece and the stretching piece, the limiting piece and the stretching piece are fixed in a one-sided fixing manner at the connection of the temperature sensing cavity and the guiding groove. When the slag falls on the guiding groove, it exchanges heat with the limiting piece and the stretching piece respectively. Since the coefficient of thermal expansion of the stretching piece is larger, when the temperature rises by the same amount, the expansion length of the stretching piece is longer than that of the limiting piece. Since the stretching piece and the limiting piece are fixed on one side and the facing surfaces are also in a fixed state, the stretching piece expands towards the limiting piece side and gradually bends. The higher the temperature of the slag, the more heat is exchanged per unit time, that is, the greater the degree of bending.

[0020] Further, the adjusting component further includes a magnetic column and a temperature sensing coil. The temperature sensing coil is placed in the temperature sensing cavity. One end of the magnetic column is inserted into the inner circle of the temperature sensing coil, and the other end abuts against the movable end of the limiting piece.

[0021] By providing the magnetic column and abutting it on one side of the limiting piece, when the limiting piece and the stretching piece are deformed by heat, the magnetic column is driven to move linearly, that is, the higher the temperature of the slag, the longer the moving distance of the magnetic column, and the greater the current generated by the temperature sensing coil cutting the magnetic induction line.

[0022] Further, the adjusting component further includes a deflection motor. The deflection motor is firmly connected to the deflection groove. An external tooth surface is provided on the outer circle of the substrate. A gear is provided at the output end of the deflection motor. The deflection motor is meshed with the external tooth surface of the substrate through the gear. The temperature sensing coil is electrically connected to the deflection motor at the same height.

[0023] By setting a deflection motor, according to the slag temperature detected at each level, the output torque of the deflection motor is controlled. Through the meshing of the tooth surfaces, the substrate is driven to rotate, thereby adjusting the overlapping area between the guiding groove and the lower perforation. A corresponding calibration temperature is set for each level, and the calibration temperature is lower towards the bottom. When the induced current generated on the temperature sensing coil is greater than the calibration temperature of this level, the deflection motor drives the substrate to rotate along the deflection groove, reducing the overlapping area between the guiding groove and the lower perforation, reducing the cross-sectional area of the current-carrying section, increasing the frictional force between the slags, thereby reducing the falling speed, extending the heat exchange time between the circulating water and the slags, and improving the quality of waste heat recovery.

[0024] As an optimization, the guiding groove includes a tapered section and a straight channel, and the cross-sectional area of the tapered section decreases from top to bottom. The cross-sectional area of the tapered section gradually decreases from top to bottom. The fixed ends of the limiting piece and the stretching piece are located in the tapered section, facilitating heat transfer. After the temperature detection is completed, the slag falls into the straight channel and enters the perforation in the lower layer for waste heat recovery.

[0025] As an optimization, a slag outlet is provided on the furnace body, and the slag outlet communicates with the bottom end of the recovery chamber. By setting the slag outlet, after the waste heat recovery is completed, the slag finally passes through the condensation plate of the bottommost layer and finally falls into the slag outlet and is discharged from the recovery chamber through the slag outlet.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting up a hoist, the slag is guided to the topmost condensation plate. The circulating water in the circulation channel can absorb the heat carried by the slag through the perforations, improving the heat recovery rate of the slag. Through the staggered arrangement of the perforations, when the slag passes through between each condensation plate, the heat recovery quality is improved; The slag conveyed by the hoist first falls on the substrate and then falls along the guiding groove under the action of gravity. The guiding groove is adapted to the perforation structure. In the initial state, the overlapping area between the guiding groove and the perforation gradually increases from top to bottom, so that as the slag falls, the recoverable heat in it gradually decreases. By increasing the overlapping area, the residence time is reduced to prevent blockage at the lower end. At the same time, the flow direction of the circulating water adopts a trend of flowing from bottom to top and flows out from the topmost circulation channel, improving the recovery quality by gradually increasing the temperature layer by layer; When the slag falls on the guiding groove, it contacts and exchanges heat with the limiting piece and the stretching piece respectively. Since the thermal expansion coefficient of the stretching piece is larger, when the temperature rises by the same amount, the expansion length of the stretching piece is longer than that of the limiting piece. Since the stretching piece and the limiting piece are fixed unilaterally and the opposite surfaces are also in a fixed state, the stretching piece expands towards the limiting piece side and gradually bends. The higher the temperature of the slag, the more heat is exchanged per unit time, that is, the greater the bending degree; A corresponding calibration temperature is set for each level, and the calibration temperature is lower towards the lower part. When the induced current generated on the temperature sensing coil is greater than the calibration temperature of this level, the deflection motor drives the substrate to rotate along the deflection groove, reducing the overlapping area between the guiding groove and the lower perforation, reducing the flow cross-section, increasing the friction force between the slag, thereby reducing the falling speed and prolonging the heat exchange time between the circulating water and the slag, improving the waste heat recovery quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 is a schematic diagram of the furnace body structure of the present invention;

[0029] Figure 3 is a schematic diagram of the working chamber sub-chamber structure of the present invention;

[0030] Figure 4 is a schematic diagram of the substrate structure of the present invention;

[0031] Figure 5 is a schematic diagram of the condensation plate structure of the present invention;

[0032] Figure 6 is a schematic diagram of the overlapping area adjustment of the condensation plate and the substrate of the present invention;

[0033] Figure 7 is a schematic diagram of the slag temperature detection of the present invention.

[0034] In the figure: 1. Furnace body; 11. Working chamber; 111. Recovery chamber; 112. Gasification chamber; 12. Slag outlet; 13. Deflection groove; 14. Feed inlet; 2. Cleaning device; 21. Mounting plate; 22. Guide plate; 23. Elevator; 24. Burner; 3. Recovery device; 31. Condensing plate; 311. Perforation; 312. Circulation channel; 32. Adjusting assembly; 321. Substrate; 3211. Guide groove; 3212. Temperature sensing chamber; 322. Limiting piece; 323. Tensile piece; 324. Magnetic column; 325. Temperature sensing coil; 326. Deflection motor; 4. Partition plate; 5. Gasifying agent pipe; 6. Gas pipe. Specific implementation mode

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment: As Figures 1-7 shown, the present invention provides a technical solution for a multifunctional biomass gasification furnace.

[0037] The biomass gasification furnace includes a furnace body 1, a cleaning device 2, a recovery device 3, a partition plate 4, a gasifying agent pipe 5 and a gas pipe 6. A working chamber 11 is provided on the furnace body 1. The partition plate 4 is placed in the working chamber 11. The partition plate 4 divides the working chamber 11 into a recovery chamber 111 and a gasification chamber 112. The cleaning device 2 is placed at the bottom of the gasification chamber 112. The discharge end of the cleaning device 2 faces the recovery chamber 111. The recovery device 3 is placed in the recovery chamber 111. The outlet of the gasifying agent pipe 5 is in pipeline communication with the gasification chamber 112. The inlet of the gas pipe 6 is in pipeline communication with the gasification chamber 112.

[0038] The furnace body 1 serves as the main supporting base and is used to install and fix other devices. The generated slag is automatically cleaned by the cleaning device 2, and the heat of the slag is automatically recovered by the recovery device 3. The working room 11 is separated by the partition plate 4 to realize the functional zoning inside the furnace body and ensure the efficient gasification process. The gasification chamber 112 is used for biomass gasification, and the recovery chamber 111 is used for recovering slag waste heat to improve energy utilization. The gasification chamber 112 is divided into a drying layer, a pyrolysis layer, a reduction reaction zone and an oxidation reaction zone. After entering the gasification chamber 12, the biomass enters the drying layer at a temperature of 100-200°C, where water is evaporated by heat and the moisture content drops to below 5%; the biomass enters the pyrolysis layer at a temperature of 200-700°C, where it is decomposed into volatile tar, carbon monoxide and methane, coke and a small amount of ash in an oxygen-deficient environment; the oxidation layer at a temperature of 900-1200°C, where a gasifier is injected through the gasifier pipe 5, and a violent oxidation reaction occurs between coke and oxygen, releasing a large amount of heat to maintain a high temperature environment; the reduction layer at a temperature of 700-900°C, where carbon dioxide and water react with coke at high temperature to generate carbon monoxide and hydrogen, i.e., the main components of the generated fuel gas, which are finally exported through the fuel gas pipe 6.

[0039] Furthermore, a feed port 14 is provided on the furnace body 1, the feed port 14 is connected to the gasification chamber 112, and the feed port 14 is located at the upper end of the cleaning device 2;

[0040] The cleaning device 2 includes a mounting plate 21 and a guide plate 22. The mounting plate 21 is firmly connected to the wall of the gasification chamber 112. A burner 24 is provided on the mounting plate 21. The mounting plate 21 is provided with a plurality of through holes. A guide plate 22 is provided at the lower end of the mounting plate 21. The guide plate 22 is arranged at an angle.

[0041] A feed port 14 is provided for guiding biomass, and the biomass is transported to the gasification chamber 112 for processing. A burner 24 is provided to carbonize the biomass, and a cleaning device 2 is placed at the lower end of the feed port 14 so that the slag remaining after the reaction passes through the through hole on the mounting plate 21 and falls onto the guide plate 22. The guide plate 22 is arranged obliquely to guide the slag, which is convenient for subsequent processing.

[0042] Furthermore, a hoist 23 is provided at the end of the guide plate 22, and the recovery device 3 includes a plurality of condensation plates 31, which are arranged in sequence along the vertical direction of the recovery chamber 111, and the feed end of the hoist 23 faces the lower end of the guide plate 22, and the discharge end of the hoist 23 faces the uppermost condensation plate 31;

[0043] The condensation plate 31 is provided with a plurality of through holes 311 , and a circulation channel 312 is provided along the circumference of the through holes 311 .

[0044] By setting up a hoist 23, such as a screw conveyor, with its inlet end located below the material guiding plate 22 and its end passing through the slot on the partition plate 4, the slag is guided to the uppermost condensation plate 31. The circulating water in the circulating flow channel 312 can absorb the heat carried by the slag through the perforations 311, improving the heat recovery rate of the slag. By arranging the perforations 311 in a staggered manner, when the slag passes between each condensation plate 31, the heat recovery quality is improved. The end of the circulating flow channel 312 is connected to a heat pump to cool the circulating water, and the recovered heat can be used for winter heating, etc.

[0045] Furthermore, the recovery device 3 further includes an adjustment component 32. The adjustment component 32 includes a base plate 321. A guiding groove 3211 is provided on the base plate 321. The guiding groove 3211 is adapted to the perforations 311. The perforations 311 are arranged in a circular array along the center of the condensation plate 31. A deflection groove 13 is provided on the furnace body 1. The base plate 321 is rotatably connected to the deflection groove 13, and adjacent circulating flow channels 312 are sequentially connected.

[0046] When the temperature is too high: the overlapping area between the guiding groove 3211 and the perforations 311 decreases.

[0047] By setting up the base plate 321 and placing it above the condensation plate 31, the slag conveyed by the hoist 23 first falls on the base plate 321 and then falls along the guiding groove 3211 under the action of gravity. The guiding groove 3211 and the perforations 311 are structurally adapted. In the initial state, the overlapping area between the guiding groove 3211 and the perforations 311 gradually increases from top to bottom, so that as the slag falls, the recoverable heat in it gradually decreases. By increasing the overlapping area, the residence time is reduced to prevent blockage at the lower end. At the same time, the flow direction of the circulating water is from bottom to top and flows out from the uppermost circulating flow channel 312. By heating layer by layer, the recovery quality is improved.

[0048] Furthermore, the adjustment component 32 further includes a limiting piece 322 and a stretching piece 323. A temperature sensing cavity 3212 is provided on the base plate 321. The limiting piece 322 and the stretching piece 323 are placed in the temperature sensing cavity 3212. The limiting piece 322 and the stretching piece 323 are firmly connected. One end of the limiting piece 322 and the stretching piece 323 contacts the wall surface of the guiding groove 3211. The thermal expansion coefficient of the limiting piece 322 is less than that of the stretching piece 323.

[0049] By setting up the temperature sensing cavity 3212 to install the limiting piece 322 and the stretching piece 323, the limiting piece 322 and the stretching piece 323 are fixed in a single-sided fixing manner at the connection of the temperature sensing cavity 3212 and the guiding groove 3211. When the slag falls on the guiding groove 3211, it contacts and exchanges heat with the limiting piece 322 and the stretching piece 323 respectively. Since the thermal expansion coefficient of the stretching piece 323 is larger, when the temperature rises by the same amount, the expansion length of the stretching piece 323 is longer than that of the limiting piece 322. Since the stretching piece 323 and the limiting piece 322 are fixed unilaterally and their facing surfaces are also in a fixed state, the stretching piece 323 expands towards the limiting piece 322 side and gradually bends. The higher the temperature of the slag, the more heat is exchanged per unit time, that is, the greater the bending degree.

[0050] Furthermore, the adjusting assembly 32 further includes a magnetic column 324 and a temperature sensing coil 325. The temperature sensing coil 325 is placed inside the temperature sensing cavity 3212. One end of the magnetic column 324 is inserted into the inner ring of the temperature sensing coil 325, and the other end abuts against the movable end of the limiting piece 322.

[0051] By setting up the magnetic column 324 and abutting it against one side of the limiting piece 322, when the limiting piece 322 and the stretching piece 323 are deformed by heat, it drives the magnetic column 324 to linearly move. That is, the higher the temperature of the slag, the longer the moving distance of the magnetic column, and the greater the current generated by the temperature sensing coil 325 cutting the magnetic induction line.

[0052] Furthermore, the adjusting assembly 32 further includes a deflection motor 326. The deflection motor 326 is fixedly connected to the deflection groove 13. The outer ring of the substrate 321 is provided with an external tooth surface, and the output end of the deflection motor 326 is provided with a gear. The deflection motor 326 meshes with the external tooth surface of the substrate 321 through the gear. The temperature sensing coil 325 is electrically connected to the deflection motor 326 at the same layer.

[0053] By setting up the deflection motor 326, according to the slag temperature detected at each level, control the output torque of the deflection motor 326. Through the tooth surface engagement, drive the substrate 321 to rotate, so as to adjust the overlapping area of the guiding groove 3211 and the lower perforation 311. A corresponding calibration temperature is set for each level, and the calibration temperature is lower as it goes downwards. When the induced current generated on the temperature sensing coil 325 is greater than the calibration temperature of this level, the deflection motor 326 drives the substrate 321 to rotate along the deflection groove 13, so that the overlapping area of the guiding groove 3211 and the lower layer perforation 311 is reduced, the flow-through cross-section is reduced, the friction force between the slags is increased, thereby reducing the falling speed, prolonging the heat exchange time between the circulating water and the slags, and improving the waste heat recovery quality.

[0054] As an optimization, the guiding groove 3211 includes a tapered section and a straight channel, and the cross-sectional area of the tapered section decreases from top to bottom. The cross-sectional area of the tapered section gradually decreases from top to bottom. The fixed ends of the limiting piece 322 and the stretching piece 323 are located in the tapered section, which is convenient for heat transfer. After the temperature detection is completed, the slag falls into the straight channel and then enters the lower perforation 311 for waste heat recovery.

[0055] As an optimization, a slag outlet 12 is provided on the furnace body 1, and the slag outlet 12 communicates with the bottom end of the recovery chamber 111. By providing the slag outlet 12, after the waste heat recovery is completed, the slag finally passes through the lowermost condensation plate 31 and finally falls into the slag outlet 12, and is discharged from the recovery chamber 111 through the slag outlet 12.

[0056] The working principle of the present invention: By setting the elevator 23, the slag is guided to the uppermost condensation plate 31. The circulating water in the circulating channel 312 can absorb the heat carried by the slag through the perforation 311, improving the heat recovery rate of the slag. By arranging the perforations 311 in a staggered manner, when the slag passes through between the condensation plates 31, the heat recovery quality is improved; the slag conveyed by the elevator 23 first falls on the substrate 321 and falls along the guiding groove 3211 under the action of gravity. The guiding groove 3211 and the perforation 311 are structurally adapted. In the initial state, the overlapping area between the guiding groove 3211 and the perforation 311 gradually increases from top to bottom, so that as the slag falls, the recoverable heat in it gradually decreases. By increasing the overlapping area, the residence time is reduced to prevent blockage at the lower end. At the same time, the flow direction of the circulating water is from bottom to top and flows out from the uppermost circulating channel 312, and the recovery quality is improved by gradually increasing the temperature layer by layer; when the slag falls on the guiding groove 3211, it contacts and exchanges heat with the limiting piece 322 and the stretching piece 323 respectively. Since the thermal expansion coefficient of the stretching piece 323 is larger, when the temperature rises by the same amount, the expansion length of the stretching piece 323 is longer than that of the limiting piece 322. Since the stretching piece 323 and the limiting piece 322 are fixed unilaterally and the facing surfaces are also in a fixed state, the stretching piece 323 expands towards the limiting piece 322 side and gradually bends. The higher the temperature of the slag, the more heat is exchanged per unit time, that is, the greater the bending degree; a corresponding calibration temperature is set for each level, and the calibration temperature is lower towards the lower part. When the induced current generated on the temperature sensing coil 325 is greater than the calibration temperature of this level, the deflection motor 326 drives the substrate 321 to rotate along the deflection groove 13, so that the overlapping area between the guiding groove 3211 and the lower perforation 311 decreases, the flow cross-section decreases, and the friction force between the slags increases, thereby reducing the falling speed and prolonging the heat exchange time between the circulating water and the slag, improving the waste heat recovery quality.

[0057] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

Claims

1. A multifunctional biomass gasifier, characterized in that: The biomass gasifier includes a furnace body (1), a cleaning device (2), a recovery device (3), a partition plate (4), a gasifying agent pipe (5) and a gas pipe (6). A working chamber (11) is provided on the furnace body (1). The partition plate (4) is placed in the working chamber (11), and the partition plate (4) divides the working chamber (11) into a recovery chamber (111) and a gasification chamber (112). The cleaning device (2) is placed at the bottom of the gasification chamber (112), and the discharge end of the cleaning device (2) faces the recovery chamber (111). The recovery device (3) is placed in the recovery chamber (111). The outlet of the gasifying agent pipe (5) is in pipeline communication with the gasification chamber (112), and the inlet of the gas pipe (6) is in pipeline communication with the gasification chamber (112).

2. The multifunctional biomass gasifier according to claim 1, wherein: A feed inlet (14) is provided on the furnace body (1). The feed inlet (14) is in communication with the gasification chamber (112), and the feed inlet (14) is located above the cleaning device (2); The cleaning device (2) includes a mounting plate (21) and a guide plate (22). The mounting plate (21) is fixedly connected to the wall surface of the gasification chamber (112). A burner (24) is provided on the mounting plate (21). A number of through holes are provided on the mounting plate (21). A guide plate (22) is provided at the lower end of the mounting plate (21), and the guide plate (22) is arranged obliquely.

3. A multifunctional biomass gasifier according to claim 2, characterized in that: A hoist (23) is provided at the end of the guide plate (22). The recovery device (3) includes a number of condensation plates (31). The number of condensation plates (31) are arranged in sequence along the vertical direction of the recovery chamber (111). The feed end of the hoist (23) faces the lower end of the guide plate (22), and the discharge end of the hoist (23) faces the uppermost condensation plate (31); A number of through holes (311) are provided on the condensation plate (31), and a circulating flow channel (312) is provided along the circumference of the through holes (311).

4. A multifunctional biomass gasifier according to claim 3, characterized in that: The recovery device (3) further includes an adjustment assembly (32). The adjustment assembly (32) includes a base plate (321). A guiding groove (3211) is provided on the base plate (321). The guiding groove (3211) is adapted to the through hole (311). The through holes (311) are arranged in a circular array along the center of the condensation plate (31). A deflection groove (13) is provided on the furnace body (1), and the base plate (321) is rotatably connected to the deflection groove (13). The adjacent circulating flow channels (312) are communicated in sequence; When the temperature is too high: the overlapping area between the guiding groove (3211) and the through hole (311) decreases.

5. A multifunctional biomass gasifier according to claim 4, characterized in that: The adjustment assembly (32) further includes a limiting piece (322) and a stretching piece (323). A temperature sensing chamber (3212) is provided on the base plate (321). The limiting piece (322) and the stretching piece (323) are placed in the temperature sensing chamber (3212). The limiting piece (322) and the stretching piece (323) are fixedly connected. One end of the limiting piece (322) and the stretching piece (323) is in contact with the wall surface of the guiding groove (3211). The thermal expansion coefficient of the limiting piece (322) is less than the thermal expansion coefficient of the stretching piece (323).

6. The multifunctional biomass gasifier according to claim 5, characterized in that: The adjusting assembly (32) further includes a magnetic post (324) and a temperature sensing coil (325). The temperature sensing coil (325) is placed inside the temperature sensing cavity (3212). One end of the magnetic post (324) is inserted into the inner ring of the temperature sensing coil (325), and the other end abuts against the movable end of the limiting piece (322).

7. A multifunctional biomass gasifier according to claim 6, characterized in that: The adjusting assembly (32) further includes a deflection motor (326). The deflection motor (326) is fixedly connected to the deflection groove (13). An outer tooth surface is provided on the outer circle of the substrate (321). A gear is provided at the output end of the deflection motor (326). The deflection motor (326) is meshed with the outer tooth surface of the substrate (321) through the gear. The temperature sensing coil (325) is electrically connected to the deflection motor (326) at the same layer height.

8. A multifunctional biomass gasifier according to claim 7, characterized in that: The guiding groove (3211) includes a tapered section and a straight channel. The cross-sectional area of the tapered section decreases from top to bottom.

9. The multifunctional biomass gasifier according to claim 8, wherein: A slag outlet (12) is provided on the furnace body (1), and the slag outlet (12) communicates with the bottom end of the recovery cavity (111).

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