Spinning biomass fluidized bed pyrolysis gasification device

Abstract

The utility model discloses a self-spinning biomass fluidized bed pyrolysis gasification device which comprises a gasification furnace used for carrying out combustion operation, one side of the gasification furnace is connected with a feeding mechanism, and biomass comburent is fed into the gasification furnace through the feeding mechanism to be combusted. The other side of the gasification furnace is connected with a discharging mechanism, charcoal ash generated after combustion in the gasification furnace is discharged through the discharging mechanism, the top end of the gasification furnace is connected with a dust removal mechanism, impurities in pyrolysis gas generated by the gasification furnace are removed through the dust removal mechanism, and the bottom end of the dust removal mechanism is connected with the discharging mechanism; a combustion area, an expanding area and a reaction area which are communicated in sequence are arranged in the gasification furnace from bottom to top; the two sides of the combustion area are connected with the feeding mechanism and the discharging mechanism respectively, and one side of the reaction area is connected with the dust removal mechanism. Flow control assemblies are arranged in the diameter expanding area and the reaction area and used for enabling pyrolysis gas generated in the combustion area to achieve spiral slow flow so as to improve the gas production rate and the gas production quality of biomass.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of biomass energy, especially relates to a self-cyclone biomass fluidized bed pyrolysis gasification device. BACKGROUND

[0002] A large amount of waste biomass, such as straw, tree bark, branches, peanut shells, etc., is produced globally every year, which will cause great resource and energy waste and seriously pollute the environment if not utilized. Pyrolysis gasification of biomass can not only obtain bio-pyrolysis gas, but also prepare carbon-based materials from the remaining carbon residue, which has great development prospects.

[0003] Patent No. ZL200820230877.X discloses an updraft biomass particle gasification furnace, which can realize the effect of converting biomass into pyrolysis gas. However, it is found in use that the residence time of biomass particles in the gasification furnace is short, which causes insufficient gasification reaction process, reduces the biomass energy conversion rate and affects the quality of pyrolysis gas generated by biomass conversion. It is necessary to improve it. SUMMARY

[0004] The utility model aims at the above problems, and provides a self-cyclone biomass fluidized bed pyrolysis gasification device which is simple in structure and improves the biomass gas production rate and gas quality.

[0005] In order to achieve the above purpose, the technical scheme of the utility model is as follows:

[0006] A self-cyclone biomass fluidized bed pyrolysis gasification device, which comprises a gasification furnace for combustion operation. One side of the gasification furnace is connected with a feeding mechanism, and biomass combustion material is sent into the gasification furnace through the feeding mechanism for combustion. The other side of the gasification furnace is connected with a discharging mechanism, and the carbon ash after combustion in the gasification furnace is discharged through the discharging mechanism. The top end of the gasification furnace is connected with a dust removal mechanism, and the impurities in the pyrolysis gas generated by the gasification furnace are removed through the dust removal mechanism. The bottom end of the dust removal mechanism is connected with the discharging mechanism. The inside of the gasification furnace is provided with a combustion zone, a diameter expansion zone and a reaction zone from bottom to top in sequence.

[0007] Further, the bottom end of the combustion zone is provided with a diameter reduction structure and forms an auxiliary zone after the diameter reduction. The top end of the auxiliary zone is connected with the combustion zone in communication, and the bottom end of the auxiliary zone is a sealed structure. The auxiliary zone is provided with an air inlet and residue discharge assembly for supplying air to the combustion zone and discharging the carbon residue after combustion.

[0008] Further, the air distribution plate is fixedly connected to the inner wall of the top end of the auxiliary area, and a discharge pipe is fixedly connected to the center of the air distribution plate, with the top end of the discharge pipe penetrating through the end wall of the top end of the air distribution plate and the bottom end of the discharge pipe extending into the auxiliary area and provided with a discharge valve.

[0009] Further, the auxiliary area is provided with an air inlet on the side wall, which is connected in communication with the air inlet fan.

[0010] Further, the auxiliary area is provided with a slag outlet on the side wall for taking out the carbon residue, and an opening and closing baffle is arranged outside the slag outlet to control the opening and closing state of the slag outlet.

[0011] Further, the diameter of the auxiliary area is gradually increased from bottom to top in the inverted conical structure; the flow control assembly includes a plurality of cyclone plates arranged in the diameter expansion area and a flow blocking plate arranged in the reaction area; the plurality of cyclone plates are fixedly connected to the inner wall of the diameter expansion area and are arranged at equal intervals along the circumferential direction of the gasification furnace, the top ends of the plurality of cyclone plates are directed towards the reaction area, and the top ends of the plurality of cyclone plates are inclined or curved in the clockwise or counterclockwise direction of the gasification furnace, so that the plurality of cyclone plates produce a spiral flow guiding effect on the pyrolysis gas; the flow blocking plate is arranged at the bottom end of the center of the reaction area, the flow blocking plate is a circular baffle structure and is horizontally arranged, the flow blocking plate is coaxially arranged with the gasification furnace, and the top end center of the flow blocking plate is fixedly connected to the inner wall of the gasification furnace at the top end of the reaction area by a suspension piece.

[0012] Further, the dust removal mechanism includes a tangential pipe, an ascending pipe, a separation tank, and a descending pipe; the tangential pipe is horizontally arranged, one end of the tangential pipe is fixedly connected to one side of the top end of the gasification furnace and the end head is connected in communication with the inside of the reaction area, the other end of the tangential pipe is connected in communication with the separation tank, and the axis of the tangential pipe is tangent to the circumferential side wall of the separation tank, so that the pyrolysis gas entering the separation tank through the tangential pipe is in a spiral state under the guidance of the circumferential side wall of the separation tank, the bottom end of the ascending pipe extends into the middle of the wind tank from the top end of the separation tank, and the top end of the ascending pipe is connected to the gas equipment; the bottom end of the separation tank is provided with a reduced diameter structure, and the bottom end of the separation tank is connected to the unloading mechanism through the descending pipe.

[0013] Further, the discharging mechanism comprises a discharging shell, a discharging auger, a discharging motor, and a discharging pipeline, the discharging shell is arranged in an inclined manner with one end close to the gasification furnace being low and the other end away from the gasification furnace being high, the end of the discharging shell close to the gasification furnace is in a sealed structure, the end of the discharging shell away from the gasification furnace is fixedly connected with the discharging motor, the discharging auger is arranged in the discharging shell, the discharging auger is coaxially arranged with the discharging shell, and one end of the discharging auger is in transmission connection with the discharging motor; the top end of the discharging pipeline is fixedly connected with the gasification furnace and is in communication with the inside of the combustion zone, the bottom end of the discharging pipeline penetrates through the side wall of the discharging shell and is in communication with the inside of the discharging shell, and the discharging pipeline sends the carbon ash after combustion in the gasification furnace into the discharging shell; the bottom end of the descending pipe penetrates through the side wall of the discharging shell and is in communication with the inside of the discharging shell, and the descending pipe sends the carbon ash falling in the dust removal mechanism into the discharging shell; the top end of the discharging shell is provided with a carbon ash outlet in communication with the inside of the discharging shell; the side wall of the discharging shell is provided with a closed sandwich structure, one side of the top end of the discharging shell is provided with a water inlet, and one side of the bottom end of the discharging shell is provided with a water outlet, and the water inlet and the water outlet are in communication with the inside of the sandwich structure of the discharging shell.

[0014] Further, the feeding mechanism comprises a feeding shell, a feeding auger, a feeding motor, and a feeding tank, the feeding shell is arranged in an inclined manner with one end close to the gasification furnace being high and the other end away from the gasification furnace being low, the end of the feeding shell close to the gasification furnace is fixedly connected with the gasification furnace and is in communication with the inside of the combustion zone, the end of the feeding shell away from the gasification furnace is fixedly connected with the feeding motor, the feeding auger is arranged in the feeding shell, the feeding auger is coaxially arranged with the feeding shell, and one end of the feeding auger is in transmission connection with the feeding motor; the bottom end of the feeding tank is fixedly connected with the feeding shell and is in communication with the inside of the feeding shell, so that the biomass combustion material in the feeding tank is sent into the gasification furnace through the feeding auger.

[0015] Further, the gasification furnace is provided with an openable and closable furnace door arranged outside the combustion zone, so as to ignite the combustion zone and add combustion material.

[0016] Compared with the prior art, the utility model has the advantages and positive effects that:

[0017] When the utility model is in use, the biomass combustion material enters the combustion zone of the gasifier through the feeding mechanism and burns in the combustion zone of the gasifier, the charcoal ash produced by the combustion is discharged through the unloading mechanism, the pyrolysis gas produced by the combustion enters the reaction zone through the diameter expansion zone, and finally enters the dust removal mechanism for dust removal operation before being sent to the gas-using equipment for use; the design of the diameter expansion zone increases the capacity of the diameter expansion zone, effectively reduces the flow rate of the pyrolysis gas in the gasifier, and prolongs the residence time of the pyrolysis gas and biomass particles in the gasifier; and, by The design of the flow control component allows the pyrolysis gas to present a swirling upward state under the guiding effect of the swirl plate and the blocking effect of the baffle plate. During the cyclonic upward flow of the pyrolysis gas, the water vapor in the swirling gas further undergoes a reduction reaction with the carbon dioxide to produce hydrogen and carbon monoxide. This operation not only increases the residence time of unreacted biomass particles in the reactor, but also extends the reduction reaction time of the pyrolysis gas, allowing the biomass particles to fully complete the gasification reaction process, thereby improving the energy conversion rate of the biomass, thereby effectively improving the gas production rate and gas quality of the biomass. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 for Figure 1 AA cross-sectional structural diagram;

[0021] Figure 3 This is a cross-sectional structural diagram of a gasifier;

[0022] Figure 4 It is a cross-sectional structural diagram of the feeding mechanism;

[0023] Figure 5 It is a cross-sectional structural diagram of the unloading mechanism;

[0024] Figure 6 This is a cross-sectional structural diagram of the dust removal mechanism. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts, any modifications, equivalent replacements, improvements, etc., shall be included in the scope of protection of the present invention.

[0026] like Figures 1 to 6 As shown, this embodiment discloses a swirl flow biomass fluidized bed pyrolysis gasification device, comprising a gasifier 1 for performing combustion operations, one side of the gasifier 1 is connected to a feeding mechanism 2, and biomass combustion materials are fed into the gasifier 1 for combustion through the feeding mechanism 2, the other side of the gasifier 1 is connected to a discharge mechanism 3, and the charcoal ash after combustion in the gasifier 1 is discharged through the discharge mechanism 3, and the top of the gasifier 1 is connected to a dust removal mechanism 4, and the dust removal mechanism 4 is used to remove impurities in the pyrolysis gas generated by the gasifier 1. In addition, the bottom end of the dust removal mechanism 4 is connected to the unloading mechanism 3; the interior of the gasification furnace 1 is arranged from bottom to top as a combustion zone 102, an expansion zone 103, and a reaction zone 104 that are connected in sequence; the two sides of the combustion zone 102 are respectively connected to the feeding mechanism 2 and the unloading mechanism 3, and one side of the reaction zone 104 is connected to the dust removal mechanism 4; the expansion zone 103 and the reaction zone 104 are provided with flow control components to enable the pyrolysis gas generated in the combustion zone 102 to achieve spiral slow flow to improve the gas production rate and gas production quality of biomass.

[0027] The gasification furnace 1 is provided with a furnace door 101 that can be opened and closed. The furnace door 101 is arranged outside the combustion zone 102 for igniting the combustion zone 102 and adding combustion materials.

[0028] like Figure 1 、 Figure 4 As shown, the feeding mechanism 2 includes a feeding shell 22, a feeding auger 23, a feeding motor 24, and a feeding tank 21. The feeding shell 22 is arranged in an inclined shape with one end close to the gasifier 1 being higher and the other end away from the gasifier 1 being lower. The end of the feeding shell 22 close to the gasifier 1 is fixedly connected to the gasifier 1 and is communicated with the interior of the combustion zone 102. The end of the feeding shell 22 away from the gasifier 1 is fixedly connected to the feeding motor 24. A feeding auger 23 is arranged in the feeding shell 22. The feeding auger 23 is coaxially arranged with the feeding shell 22, and one end of the feeding auger 23 is transmission-connected to the feeding motor 24. The bottom end of the feeding tank 21 is fixedly connected to the feeding shell 22 and is communicated with the interior of the feeding shell 22, so as to deliver the biomass combustion material in the feeding tank 21 into the gasifier 1 through the feeding auger 23.

[0029] When the gasifier is working, the biomass material is firstly sent into the gasifier through the feeding auger, then the furnace door is opened, alcohol is put in and ignited, and the furnace door is closed, the pyrolysis gas generated after the biomass material is burned is burned in the combustion zone, the gas flow rate is reduced in the expansion zone, and the reduction reaction is carried out again in the reaction zone, and finally the pyrolysis gas after the reaction is completed is dusted by the dust removal mechanism and enters the gas equipment; at the same time, the carbon ash generated after the biomass is burned is discharged through the unloading mechanism, and the gasification of the biomass is finally completed.

[0030] As shown in Figure 1 , Figure 2 , Figure 3 The bottom end of the combustion zone 102 is provided with a reduced diameter structure and forms an auxiliary zone 105 after the diameter is reduced, the top end of the auxiliary zone 105 is communicated with the combustion zone 102, and the bottom end of the auxiliary zone 105 is a sealed structure; the auxiliary zone 105 is provided with an air inlet and slag discharge assembly for supplying air to the combustion zone 102 and discharging carbon slag after combustion.

[0031] The air inlet and slag discharge assembly includes an air distribution plate 6 and a slag discharge pipe 7; the air distribution plate 6 is fixedly connected to the inner wall at the top end of the auxiliary zone 105, the center position of the air distribution plate 6 is fixedly connected with the slag discharge pipe 7, the top end of the slag discharge pipe 7 penetrates through the top end wall of the air distribution plate 6 and is flush with it, the bottom end of the slag discharge pipe 7 extends into the auxiliary zone 105 and is provided with a slag discharge valve 701; the air distribution plate 6 is uniformly provided with a plurality of air distribution holes 601.

[0032] The side wall of the auxiliary zone 105 is provided with a slag taking port for taking out the carbon slag, and the outside of the slag taking port is provided with an opening and closing baffle 8 for controlling the opening and closing state of the slag taking port.

[0033] The side wall of the auxiliary zone 105 is provided with an air inlet 106 and is communicated with the air inlet fan 5 through the air inlet 106, and the air inlet 106 is located below the air distribution plate 6.

[0034] When the biomass is burned in the gasifier, the air inlet fan supplies air to it, the air enters the combustion zone through the air distribution holes on the air distribution plate after the air inlet and the air distribution holes, and assists the combustion operation in the gasifier; at the same time, the opening and closing baffle and the slag discharge valve need to be opened regularly, so that the carbon slag generated after combustion is discharged from the slag discharge pipe and cleaned.

[0035] As shown in Figure 1 , Figure 2 , Figure 3As shown, the expansion zone 103 is an inverted frustum structure with an inner diameter gradually increasing from bottom to top; the flow control component includes a plurality of swirl plates 9 arranged in the expansion zone 103 and a baffle 11 arranged in the reaction zone 104; the plurality of swirl plates 9 are fixedly connected to the inner wall of the expansion zone 103 and are arranged at equal intervals along the circumferential direction of the gasifier 1, the top ends of the plurality of swirl plates 9 are facing the reaction zone 104 and the top ends of the plurality of swirl plates 9 are all inclined in the counterclockwise direction of the gasifier 1, so that the plurality of swirl plates 9 produce a spiral guide effect on the pyrolysis gas; the baffle 11 is arranged at the bottom end of the center position of the reaction zone 104, the baffle 11 is a circular baffle structure and is arranged horizontally, the baffle 11 is coaxially arranged with the gasifier 1, and the center position of the top end of the baffle 11 is fixedly connected to the inner wall of the gasifier 1 at the top end of the reaction zone 104 through the suspension 10.

[0036] The expansion zone first increases its gas volume and slows down the gas flow rate of the pyrolysis gas; at the same time, when the gas enters the expansion zone, the rising pyrolysis gas is blocked by the baffle and flows to the swirl plate on the inner wall of the expansion zone. Under the guidance of the swirl plate, a spiral airflow is formed and gradually rises, which effectively delays the rising rate of the pyrolysis gas and prolongs the reduction reaction time of the pyrolysis gas, thereby improving the gasification effect of the gasifier.

[0037] like Figure 1 、 Figure 6 As shown, the dust removal mechanism 4 includes a tangential pipe 41, a riser 43, a separation tank body 42, and a downpipe 44; the tangential pipe 41 is arranged horizontally, one end of the tangential pipe 41 is fixedly connected to one side of the top of the gasifier 1 and the end head is connected to the interior of the reaction zone 104, the other end of the tangential pipe 41 is connected to the separation tank body 42 and the axis of the tangential pipe 41 is tangent to the outer peripheral side wall of the separation tank body 42, so that the pyrolysis gas entering the separation tank body 42 through the tangential pipe 41 presents a spiral state under the guidance of the circumferential side wall of the separation tank body 42, the bottom end of the riser 43 extends from the top of the separation tank body 42 to the middle position of the wind tank body 42, and the top of the riser 43 is connected to the gas-using equipment; the bottom end of the separation tank body 42 is set to a reduced diameter structure and the bottom end of the separation tank body 42 is connected to the unloading mechanism 3 through the downpipe 44.

[0038] When the pyrolysis gas enters the separation tank from the gasifier through the tangential pipe, under the action of the tangential entry, the pyrolysis gas swirls in the separation tank and enters the gas-consuming equipment through the riser. Impurities, carbon ash, etc. in the pyrolysis gas fall into the unloading mechanism through the downcomer and are finally discharged from the port of the unloading mechanism, realizing the removal of a small amount of impurities in the pyrolysis gas.

[0039] like Figure 1 、 Figure 5As shown, the discharge mechanism 3 comprises a discharge casing 32, a discharge auger 33, a discharge motor 34 and a discharge pipeline 31. The discharge casing 32 is arranged in an inclined manner with one end close to the gasifier 1 being lower and the other end away from the gasifier 1 being higher. The end of the discharge casing 32 close to the gasifier 1 is closed, and the end of the discharge casing 32 away from the gasifier 1 is fixedly connected with the discharge motor 34. The discharge auger 33 is coaxially arranged in the discharge casing 32 and is drivingly connected with the discharge motor 34 at one end thereof. The top end of the discharge pipeline 31 is fixedly connected with the gasifier 1 and is in communication with the inside of the combustion zone 102. The bottom end of the discharge pipeline 31 penetrates through the side wall of the discharge casing 32 and is in communication with the inside of the discharge casing 32, and the carbon ash combusted in the gasifier 1 is sent into the discharge casing 32. The bottom end of the downcomer 44 penetrates through the side wall of the discharge casing 32 and is in communication with the inside of the discharge casing 32, and the carbon ash falling in the dust removal mechanism 4 is sent into the discharge casing 32. The top end of the discharge casing 32 is provided with a carbon ash outlet 324 in communication with the inside of the discharge casing 32. The outer peripheral side wall of the discharge casing 32 is provided with a closed sandwich structure 321. The top end of the discharge casing 32 is provided with a water inlet 322, and the bottom end of the discharge casing 32 is provided with a water outlet 323. The water inlet 322 and the water outlet 323 are in communication with the inside of the sandwich structure 321 of the discharge casing 32.

[0040] The discharge mechanism can discharge the carbon ash overflowing from the gasifier and the impurities falling from the downcomer through the discharge auger. Meanwhile, cold water can be supplied into the sandwich structure of the discharge casing through the water inlet, and the cold water can cool the high-temperature carbon ash to prevent the discharged carbon ash from being still in a high-temperature state and being difficult to store and transport. The cooled water can be discharged from the water outlet.

[0041] The utility model discloses when using, biomass combustion material enters the combustion area of gasification furnace through the feeding mechanism and carries out combustion in the combustion area of gasification furnace, and the carbon ash produced in combustion is discharged through the unloading mechanism, and the pyrolysis gas produced in combustion enters the reaction area through the diameter expansion area, finally enters the dust removal mechanism to carry out dust removal operation and is sent into the gas equipment to use, through the design in the diameter expansion area, make the capacity of diameter expansion area increase, effectively reduced the flow rate of pyrolysis gas in gasification furnace, prolong the residence time of pyrolysis gas and biomass particles in gasification furnace, and, through the design of setting flow control assembly in diameter expansion area, reaction area, make pyrolysis gas present cyclone rising state under the guiding effect of cyclone plate and the blocking effect of flow baffle, in the process of pyrolysis gas cyclone rising, the water vapor in cyclone gas and carbon dioxide further occur reduction reaction, and hydrogen and carbon monoxide are generated in the reaction, this operation not only increases the residence time of unreacted biomass small particles in the reaction furnace, but also prolongs the reduction reaction length of pyrolysis gas, makes biomass small particles can fully complete the gasification reaction process, improves the energy conversion rate of biomass, thereby effectively improves the gas production rate and gas production quality of biomass.

Claims

1. A spinning flow biomass fluidized bed pyrolysis and gasification device, comprising a gasifier for performing combustion operations, characterized in that: One side of the gasifier is connected to a feeding mechanism, and the biomass combustion material is fed into the gasifier for combustion through the feeding mechanism. The other side of the gasifier is connected to a discharging mechanism, and the charcoal ash after combustion in the gasifier is discharged through the discharging mechanism. The top of the gasifier is connected to a dust removal mechanism, and the impurities in the pyrolysis gas generated by the gasifier are removed through the dust removal mechanism. The bottom of the dust removal mechanism is connected to the discharging mechanism; the interior of the gasifier is arranged from bottom to top as a combustion zone, an expansion zone, and a reaction zone that are connected in sequence; the two sides of the combustion zone are respectively connected to the feeding mechanism and the discharging mechanism, and one side of the reaction zone is connected to the dust removal mechanism; the expansion zone and the reaction zone are provided with flow control components to make the pyrolysis gas generated in the combustion zone achieve spiral slow flow to improve the gas production rate and gas production quality of biomass.

2. The spinning flow biomass fluidized bed pyrolysis and gasification device according to claim 1, characterized in that: The bottom end of the combustion zone is set as a reduced diameter structure and an auxiliary zone is formed after the reduction. The top end of the auxiliary zone is connected to the combustion zone, and the bottom end of the auxiliary zone is a sealed structure; an air inlet and slag discharge component is set in the auxiliary zone to supply wind to the combustion zone and discharge the carbon slag after combustion.

3. The spinning flow biomass fluidized bed pyrolysis and gasification device according to claim 2, characterized in that: The air inlet and slag discharge assembly includes an air distribution plate and a slag discharge pipe; the air distribution plate is fixedly connected to the inner wall of the top of the auxiliary area, and the slag discharge pipe is fixedly connected to the center position of the air distribution plate. The top of the slag discharge pipe passes through the end wall of the top of the air distribution plate, and the bottom of the slag discharge pipe extends into the auxiliary area and is provided with a slag discharge valve; a number of air distribution holes are evenly arranged on the air distribution plate.

4. The spinning flow biomass fluidized bed pyrolysis and gasification device according to claim 3, characterized in that: An air inlet is provided on the side wall of the auxiliary area and is connected to the air inlet fan through the air inlet. The air inlet is located below the air distribution plate.

5. The spinning flow biomass fluidized bed pyrolysis and gasification device according to claim 3, characterized in that: A slag taking port for taking out carbon slag is provided on the side wall of the auxiliary area, and an opening and closing baffle for controlling the opening and closing state of the slag taking port is provided on the outside of the slag taking port.

6. The spinning flow biomass fluidized bed pyrolysis and gasification device according to claim 1, characterized in that: The expansion zone is an inverted frustum structure with an inner diameter gradually increasing from bottom to top; the flow control assembly includes a plurality of swirl plates arranged in the expansion zone and a baffle arranged in the reaction zone; the plurality of swirl plates are fixedly connected to the inner wall of the expansion zone and are arranged at equal intervals along the circumferential direction of the gasifier, the top ends of the plurality of swirl plates are facing the reaction zone and the top ends of the plurality of swirl plates are inclined or bent in the clockwise or counterclockwise direction of the gasifier, so that the plurality of swirl plates produce a spiral guide effect on the pyrolysis gas; the baffle is arranged at the bottom end of the center position of the reaction zone, the baffle is a circular baffle structure and is arranged horizontally, the baffle is coaxial with the gasifier, and the center position of the top end of the baffle is fixedly connected to the inner wall of the gasifier at the top end of the reaction zone through a suspension.

7. The spinning flow biomass fluidized bed pyrolysis and gasification device according to claim 1, characterized in that: The dust removal mechanism includes a tangential pipe, a riser, a separation tank body, and a downpipe; the tangential pipe is arranged horizontally, one end of the tangential pipe is fixedly connected to one side of the top of the gasifier and the end head is connected to the inside of the reaction zone, the other end of the tangential pipe is connected to the separation tank body and the axis of the tangential pipe is tangent to the outer circumferential side wall of the separation tank body, so that the pyrolysis gas entering the separation tank body through the tangential pipe presents a spiral state under the guidance of the circumferential side wall of the separation tank body, the bottom end of the riser extends from the top of the separation tank body to the middle position of the wind tank body, and the top of the riser is connected to the gas-using equipment; the bottom end of the separation tank body is set to a reduced diameter structure and the bottom end of the separation tank body is connected to the unloading mechanism through the downpipe.

8. The spinning flow biomass fluidized bed pyrolysis and gasification device according to claim 7, characterized in that: The unloading mechanism includes a unloading shell, a unloading auger, a unloading motor, and a unloading pipe. The unloading shell is arranged in an inclined shape with one end close to the gasifier being lower and the other end away from the gasifier being higher. The end of the unloading shell close to the gasifier is a sealing structure, and the end of the unloading shell away from the gasifier is fixedly connected to the unloading motor. A unloading auger is arranged in the unloading shell, and the unloading auger is coaxially arranged with the unloading shell. One end of the unloading auger is transmission-connected to the unloading motor; the top end of the unloading pipe is fixedly connected to the gasifier and communicates with the inside of the combustion zone, and the bottom end of the unloading pipe passes through the side wall of the unloading shell and is connected to the unloading The interior of the shell is connected and the charcoal ash burned in the gasifier is sent into the unloading shell; the bottom end of the downcomer passes through the side wall of the unloading shell and is connected to the interior of the unloading shell and sends the charcoal ash dropped from the dust removal mechanism into the unloading shell; a charcoal ash outlet is provided at the bottom of the top of the unloading shell, and the charcoal ash outlet is connected to the interior of the unloading shell; a closed sandwich structure is provided in the outer peripheral side wall of the unloading shell, a water inlet interface is provided on the top side of the unloading shell, and a water outlet interface is provided on the bottom side of the unloading shell, and the water inlet interface and the water outlet interface are both connected to the interior of the sandwich structure of the unloading shell.

9. The spinning flow biomass fluidized bed pyrolysis and gasification device according to claim 1, characterized in that: The feeding mechanism includes a feeding shell, a feeding auger, a feeding motor, and a feeding tank. The feeding shell is arranged in an inclined shape with one end close to the gasifier being higher and the other end away from the gasifier being lower. The end of the feeding shell close to the gasifier is fixedly connected to the gasifier and is communicated with the interior of the combustion zone. The end of the feeding shell away from the gasifier is fixedly connected to the feeding motor. A feeding auger is arranged in the feeding shell, and the feeding auger is coaxially arranged with the feeding shell. One end of the feeding auger is transmission-connected to the feeding motor. The bottom end of the feeding tank is fixedly connected to the feeding shell and is communicated with the interior of the feeding shell, so that the biomass combustion material in the feeding tank can be sent into the gasifier through the feeding auger.

10. The spinning flow biomass fluidized bed pyrolysis and gasification device according to claim 1, characterized in that: The gasification furnace is provided with a furnace door that can be opened and closed. The furnace door is arranged outside the combustion zone and is used for igniting the combustion zone and adding combustion materials.

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