A dust removal device for a gasifier

Abstract

This utility model discloses a dust removal device for a gasifier, belonging to the technical field of biomass gasifiers. It aims to solve the problem that the gas produced by existing biomass combustion furnaces contains particulate pollutants, and direct emission of these gases pollutes the atmosphere. The device includes a collection furnace with a sealed plate inside. Several air vents run through the plate, and each vent's bottom is connected to a dust removal filter tube, the outer wall of which is fitted with a dust collection bag. A pipe is located at the top of the sealed plate, connected to a high-pressure blower. This pipe is also connected to nozzles corresponding to the number of filter tubes, with the nozzles located inside the corresponding filter tubes. An inlet pipe and an outlet pipe are connected to the side wall of the collection furnace, located below and above the sealed plate, respectively. This utility model effectively filters particulate pollutants through the dust removal filter tubes and dust collection bags, preventing environmental pollution. The high-pressure blower, pipes, and nozzles can backflush to clean the dust collection bags, preventing blockage and ensuring continuous and stable operation of the device.

Description

Technical Field

[0001] This utility model belongs to the technical field of biomass gasification furnaces, specifically relating to a dust removal device for a gasification furnace. Background Technology

[0002] Biomass gasification furnaces, as key equipment for converting biomass energy into high-grade energy, primarily process biomass raw materials such as crop straw, forestry waste, and livestock manure. By creating an oxygen-deficient or partially combusted reaction environment within the furnace, the raw materials undergo a series of chemical reactions including pyrolysis, oxidation, and reduction, ultimately producing recyclable materials. These recyclable materials can be directly used in civilian applications such as cooking and heating, or as fuel for industrial boilers and internal combustion engines, achieving efficient energy utilization of biomass resources. This is of great significance for alleviating energy shortages and reducing fossil fuel consumption.

[0003] Currently, the operation of biomass gasification furnaces typically involves burning charcoal, carbon powder, and other raw materials in a combustion furnace. The combustion produces gases, which are then condensed in a condenser to form liquid tar, which is discharged into a collection furnace. Uncondensed gases are discharged through the furnace's outlet. However, this process has significant drawbacks: the combustion gases contain particulate pollutants. If directly discharged, these pollutants will enter the atmosphere, causing serious environmental pollution. Utility Model Content

[0004] In view of this, the present invention provides a gasifier dust removal device to solve the problem that the gas produced by the biomass combustion furnace in the prior art contains some particulate pollutants, which, if discharged directly, will enter the atmosphere and cause serious environmental pollution.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A gasifier dust removal device includes a collecting furnace, in which a sealing plate is embedded. Several air vents are provided through the sealing plate, and a dust removal filter tube is connected to the bottom of each air vent. A dust removal bag is fitted onto the outer wall of the dust removal filter tube. A pipe is also provided at the top of the sealing plate, connected to a high-pressure blower. Nozzles corresponding to the number of dust removal filter tubes are connected to the pipe, and the nozzles are located inside the corresponding dust removal filter tubes. An air inlet pipe and an air outlet pipe are connected to the side wall of the collecting furnace, located below and above the sealing plate, respectively.

[0007] In this technical solution, it should be noted that the enclosed plate divides the internal space of the collecting furnace into upper and lower parts, serving as both isolation and support; the vent is the channel for gas to enter the upper part of the collecting furnace from the lower part, allowing the gas to be treated to enter the dust collector filter tube; the dust collector filter tube provides a path for gas flow and simultaneously supports the dust collector bag fitted on its outer wall; the dust collector bag filters particulate pollutants in the gas, and when the gas passes through, the particulate pollutants are intercepted on the surface of the dust collector bag; the pipe is used to transport high-pressure airflow and serves as the connection channel between the high-pressure blower and the nozzle; the high-pressure blower provides high-pressure power, causing the high-pressure airflow to be ejected through the pipe and nozzle; the nozzle, located inside the dust collector filter tube, can directionally eject the high-pressure airflow to backflush and clean the dust collector bag, preventing clogging; the inlet pipe is the entrance for the gas to be treated to enter the lower part of the collecting furnace, introducing the gas containing particulate pollutants into the device; the outlet pipe... It is the outlet at the top of the collection furnace where the purified gas is discharged. Its overall working principle is as follows: Gas containing particulate pollutants enters the lower part of the collection furnace through the inlet pipe. Under air pressure, it enters the dust collector filter tube through the vent on the sealed plate. When the gas passes through the dust collector bag on the outer wall of the filter tube, the particulate pollutants are filtered and trapped by the dust collector bag. The purified gas enters the upper part of the collection furnace and is discharged through the outlet pipe. When there are many particulate pollutants attached to the surface of the dust collector bag, the high-pressure blower starts, and the high-pressure airflow is sprayed out from the nozzle through the pipeline to backflush the dust collector bag, causing the attached particulate pollutants to fall off, thus ensuring the filtration effect of the dust collector bag. By setting up dust collector filter tubes and dust collector bags, particulate pollutants in the gas can be effectively filtered, avoiding direct emission and environmental pollution. The high-pressure blower, pipeline, and nozzles allow for backflush cleaning of the dust collector bag, preventing blockage and ensuring the continuous and stable operation of the dust collection device.

[0008] Preferably, the nozzle includes a vertical tube and a hemispherical tube, the top of the vertical tube is connected to the pipe, the bottom of the vertical tube is connected to the hemispherical tube, and a plurality of air outlet holes are respectively provided through the vertical tube and the hemispherical tube.

[0009] In this technical solution, it should be noted that the top of the vertical pipe is connected to the pipeline, and its main function is to serve as a transmission channel for high-pressure airflow, stably receiving high-pressure airflow from the pipeline and conveying it downwards; the bottom of the vertical pipe is connected to the hemispherical pipe, which can smoothly guide the high-pressure airflow transmitted from the vertical pipe into the hemispherical pipe, realizing the transfer and distribution of airflow; the arc-shaped structure of the hemispherical pipe can play a role in dispersing and guiding the airflow, and together with the set air outlet, it can allow the high-pressure airflow to diffuse more evenly in all directions, expanding the airflow spray range.

[0010] Preferably, the bottom of the sealing plate is also provided with an oil suction pipe corresponding to the number of vents, each oil suction pipe is located in the corresponding dust removal filter pipe, and each oil suction pipe is connected to the corresponding vent.

[0011] In this technical solution, it should be noted that the main function of the oil suction pipe is to recover tar from the gas. Utilizing its structural characteristics or adsorption properties, it captures and collects the tar as the gas flows through it. Its working principle is as follows: tar-containing gas first enters the dust collector filter tube, then flows through the oil suction pipe located inside the filter tube. The oil suction pipe recovers the tar from the gas. The gas, after being processed and tar-recovered by the oil suction pipe, exits through the vent and enters the subsequent process. By setting up oil suction pipes corresponding to the number of vents, with each oil suction pipe located inside its corresponding dust collector filter tube and connected to the vent, the gas entering the dust collector filter tube can flow through the oil suction pipe, allowing the oil suction pipe to fully perform its tar recovery function and effectively recover the tar from the gas.

[0012] Preferably, the bottom of each of the dust removal filter tubes is connected to an oil storage tank, and the end of the oil suction pipe away from the sealing plate extends into the oil storage tank.

[0013] In this technical solution, it should be noted that the end of the oil suction pipe away from the sealing plate extends into the oil storage tank, which facilitates the introduction of the recovered tar into the oil storage tank.

[0014] Preferably, each of the oil storage tanks is connected to the other via a connecting pipe, and the connecting pipe is also connected to an oil delivery pipe that extends out of the collecting furnace.

[0015] In this technical solution, it should be noted that the connecting pipe is used to connect each oil storage tank. Its main function is to allow the tar in each oil storage tank to flow between them, thereby balancing the tar storage in each oil storage tank and preventing overflow due to excessive tar in a certain oil storage tank. The oil delivery pipe is connected to the connecting pipe and extends to the outside of the collection furnace. Its function is to serve as a channel for tar discharge, so that the tar collected in the oil storage tank can be collected through the connecting pipe and then discharged to the outside of the collection furnace through the oil delivery pipe for subsequent processing or reuse.

[0016] Preferably, the connecting pipe is also connected to a liquid inlet pipe, and the end of the liquid inlet pipe away from the connecting pipe extends out of the collecting furnace.

[0017] In this technical solution, the main function of the inlet pipe is to serve as a channel for adding diluent oil into the oil delivery pipe. Through this channel, the diluent oil can be introduced into the connecting pipe and then into the oil delivery pipe to reduce the viscosity of the tar and prevent the tar from clogging the oil delivery pipe or the connecting pipe.

[0018] Preferably, the air outlet duct is equipped with a negative pressure fan.

[0019] In this technical solution, it should be noted that the negative pressure fan is installed on the air outlet pipe. Its main function is to generate negative pressure, accelerate the flow speed of gas in the air outlet pipe, thereby enhancing the gas suction capacity in the collection furnace and enabling the filtered and treated gas to be discharged from the air outlet pipe more quickly and smoothly.

[0020] Preferably, a combustion furnace is provided on one side of the collecting furnace, and a condenser is provided inside the combustion furnace. The liquid outlet of the condenser is connected to the air inlet pipe.

[0021] In this technical solution, it should be noted that the combustion furnace adopts existing technology and is located on one side of the collection furnace. It is the place where biomass raw materials undergo combustion reaction and provides a source for subsequent gas treatment. The condenser is located inside the combustion furnace and its main function is to condense the gas generated by the combustion furnace, so that some of the components in the gas are converted into liquid. The liquid outlet of the condenser is connected to the air inlet pipe, which can guide the liquid formed after condensation into the collection furnace through the air inlet pipe, thereby realizing the collection of liquid generated by combustion.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0023] 1. In this utility model, by setting up dust removal filter pipes and dust removal bags, particulate pollutants in the gas can be effectively filtered to avoid direct emission and environmental pollution. Setting up high-pressure blowers, pipes and nozzles can back-blown clean the dust removal bags to prevent them from clogging and ensure the continuous and stable operation of the dust removal device.

[0024] 2. In this utility model, the arc-shaped structure of the hemispherical tube can disperse and guide the airflow. Combined with the provided air outlet, it allows the high-pressure airflow to spread more evenly in all directions, thus expanding the airflow spray range.

[0025] 3. In this utility model, by setting up oil suction pipes corresponding to the number of air vents, and each oil suction pipe being located inside the corresponding dust removal filter pipe and connected to the air vent, the gas entering the dust removal filter pipe can flow through the oil suction pipe, allowing the oil suction pipe to fully play its role in recovering tar and effectively recovering the tar in the gas.

[0026] 4. In this utility model, the connecting pipe is used to connect each oil storage tank. Its main function is to allow the tar in each oil storage tank to flow to each other, thereby balancing the tar storage in each oil storage tank and preventing overflow due to excessive tar in a certain oil storage tank. The oil delivery pipe is connected to the connecting pipe and extends to the outside of the collection furnace. Its function is to serve as a channel for tar discharge, so that the tar collected in the oil storage tank can be collected through the connecting pipe and then discharged to the outside of the collection furnace through the oil delivery pipe, so that the recovered tar can be further processed or reused. Attached Figure Description

[0027] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the sealing plate and dust removal filter tube of this utility model;

[0031] Figure 4 for Figure 3 A top-view structural diagram;

[0032] Figure 5 for Figure 4 A schematic diagram of the structure after GG cutting along the center line;

[0033] Figure 6 This is a schematic diagram of the nozzle structure;

[0034] Wherein: 6-collecting furnace, 7-first connecting pipe, 8-air inlet pipe, 9-air outlet pipe, 231-sealing plate, 232-vent, 233-dust bag, 234-oil storage tank, 235-oil delivery pipe, 2351-liquid inlet pipe, 2352-negative pressure fan, 2353-connecting pipe, 236-dust filter pipe, 237-oil suction pipe, 238-pipe, 239-nozzle, 2391-vertical pipe, 2392-hemispherical pipe, 2393-air outlet. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0041] Example

[0042] like Figures 1-6As shown in the figure, this utility model discloses a gasifier dust removal device, including a collecting furnace 6. The collecting furnace 6 is embedded with a sealing plate 231. A plurality of air vents 232 are provided through the sealing plate 231. The bottom of each air vent 232 is connected to a dust removal filter tube 236. A dust removal bag 233 is fitted on the outer wall of the dust removal filter tube 236. The top of the sealing plate 231 is also provided with a pipe 238. The pipe 238 is connected to a high-pressure blower. The pipe 238 is connected to a nozzle 239 corresponding to the number of dust removal filter tubes 236. The nozzles 239 are located inside the corresponding dust removal filter tubes 236. An air inlet pipe 8 and an air outlet pipe 9 are respectively connected to the side wall of the collecting furnace 6. The air inlet pipe 8 and the air outlet pipe 9 are located below and above the sealing plate 231, respectively. It should be noted that the enclosed plate 231 divides the internal space of the collecting furnace 6 into upper and lower parts, serving as isolation and support; the vent 232 is the channel for gas to enter the upper part of the collecting furnace 6 from the lower part, allowing the gas to be treated to enter the dust removal filter tube 236; the dust removal filter tube 236 provides a path for gas flow and supports the dust removal bag 233 fitted on its outer wall; the dust removal bag 233 is used to filter particulate pollutants in the gas, and when the gas passes through, the particulate pollutants are intercepted on the surface of the dust removal bag 233; the pipe 238 is used to transport high-pressure airflow and is the connection channel between the high-pressure blower and the nozzle 239; the high-pressure blower provides high-pressure power, causing the high-pressure airflow to be ejected through the pipe 238 and the nozzle 239; the nozzle 239 is located inside the dust removal filter tube 236 and can directionally eject the high-pressure airflow to backflush and clean the dust removal bag 233, preventing the dust removal bag 233 from clogging; the inlet pipe 8 is the inlet for the gas to be treated to enter the lower part of the collecting furnace 6, introducing the gas containing particulate pollutants into the device; the outlet pipe 9 is the outlet for the purified gas. The gas exits from the upper outlet of the collection furnace 6. Its overall working principle is as follows: Gas containing particulate pollutants enters the lower part of the collection furnace 6 through the inlet pipe 8. Under pressure, it passes through the vent 232 on the sealing plate 231 and enters the dust collector filter pipe 236. When the gas passes through the dust collector bag 233 on the outer wall of the dust collector filter pipe 236, the particulate pollutants are filtered and trapped by the dust collector bag 233. The purified gas enters the upper part of the collection furnace 6 and exits from the outlet pipe 9. When there are many particulate pollutants attached to the surface of the dust collector bag 233, high pressure... When the fan starts, high-pressure airflow is ejected from the nozzle 239 through the pipe 238, backflushing the dust collection bag 233 to dislodge the attached particulate pollutants and ensure the filtration effect of the dust collection bag 233. By setting up the dust collection filter pipe 236 and the dust collection bag 233, particulate pollutants in the gas can be effectively filtered to avoid direct emission and environmental pollution. The high-pressure fan, pipe 238 and nozzle 239 can backflush and clean the dust collection bag 233 to prevent it from clogging and ensure the continuous and stable operation of the dust collection device.

[0043] like Figure 6As shown, in this embodiment, the nozzle 239 includes a vertical pipe 2391 and a hemispherical pipe 2392. The top of the vertical pipe 2391 is connected to the pipe 238, and the bottom of the vertical pipe 2391 is connected to the hemispherical pipe 2392. Both the vertical pipe 2391 and the hemispherical pipe 2392 are provided with a plurality of air outlet holes 2393. It should be noted that the top of the vertical pipe 2391 is connected to the pipe 238, and its main function is to serve as a transmission channel for high-pressure airflow, stably receiving high-pressure airflow from the pipe 238 and conveying it downwards. The bottom of the vertical pipe 2391 is connected to the hemispherical pipe 2392, allowing the high-pressure airflow transmitted from the vertical pipe 2391 to be smoothly guided into the hemispherical pipe 2392, realizing the transfer and distribution of airflow. The arc-shaped structure of the hemispherical pipe 2392 can disperse and guide the airflow, and together with the provided air outlet holes 2393, allows the high-pressure airflow to diffuse more evenly in all directions, expanding the spray range of the airflow.

[0044] like Figure 5 As shown, in this embodiment, the bottom of the sealing plate 231 is also provided with an oil suction pipe 237 corresponding to the number of vents 232. Each oil suction pipe 237 is located in the corresponding dust removal filter pipe 236, and each oil suction pipe 237 is connected to the corresponding vent 232. It should be noted that the main function of the oil suction pipe 237 is to recover tar from the gas. Utilizing its structural characteristics or adsorption properties, it captures and collects the tar as the gas flows through it. Its working principle is as follows: the tar-containing gas first enters the dust collector filter pipe 236, then flows through the oil suction pipe 237 located within the dust collector filter pipe 236. The oil suction pipe 237 recovers the tar from the gas. After being processed and having its tar recovered by the oil suction pipe 237, the gas exits through the vent 232 and enters the subsequent process. By setting up oil suction pipes 237 corresponding to the number of vents 232, and with each oil suction pipe 237 located within its corresponding dust collector filter pipe 236 and connected to the vent 232, the gas entering the dust collector filter pipe 236 can flow through the oil suction pipe 237, allowing the oil suction pipe 237 to fully perform its tar recovery function and effectively recover the tar from the gas.

[0045] like Figure 5 As shown, in this embodiment, the bottom of each dust removal filter pipe 236 is connected to an oil storage tank 234, and the end of the oil suction pipe 237 away from the sealing plate 231 extends into the oil storage tank 234. It should be noted that the end of the oil suction pipe 237 away from the sealing plate 231 extends into the oil storage tank 234 to facilitate the introduction of the recovered tar into the oil storage tank 234.

[0046] like Figure 3As shown, in this embodiment, each of the oil storage tanks 234 is connected to each other via a connecting pipe 2353. An oil delivery pipe 235 is also connected to the connecting pipe 2353, extending out of the collecting furnace 6. It should be noted that the connecting pipe 2353 connects each oil storage tank 234, allowing the tar in each tank to flow freely, thus balancing the tar levels in each tank and preventing overflow due to excessive tar in any one tank. The oil delivery pipe 235 is connected to the connecting pipe 2353 and extends out of the collecting furnace 6. Its function is to serve as a tar discharge channel, facilitating the collection of tar from the oil storage tanks 234 through the connecting pipe 2353 and then through the oil delivery pipe 235 to the outside of the collecting furnace 6 for subsequent processing or reuse.

[0047] like Figure 3 As shown, in this embodiment, the connecting pipe 2353 is also connected to an inlet pipe 2351, with one end of the inlet pipe 2351 extending out of the collecting furnace 6 away from the connecting pipe 2353. The main function of the inlet pipe 2351 is to serve as a channel for adding diluent oil into the oil delivery pipe 235. Through this channel, the diluent oil can be introduced into the connecting pipe 2353 and then into the oil delivery pipe 235 to reduce the viscosity of the tar and prevent the tar from clogging the oil delivery pipe 235 or the connecting pipe 2353.

[0048] like Figure 1 As shown, in this embodiment, a negative pressure fan 2352 is provided on the air outlet pipe 9. It should be noted that the negative pressure fan 2352 is installed on the air outlet pipe 9, and its main function is to generate negative pressure, accelerate the flow speed of gas in the air outlet pipe 9, thereby enhancing the gas suction capacity in the collecting furnace 6, and promoting the gas after filtration and treatment to be discharged from the air outlet pipe 9 more quickly and smoothly.

[0049] In this embodiment, a combustion furnace is provided on one side of the collecting furnace 6, and a condenser is provided inside the combustion furnace. The liquid outlet of the condenser is connected to the air inlet pipe 8. It should be noted that the combustion furnace adopts existing technology and is located on one side of the collecting furnace 6. It is the site where biomass raw materials undergo combustion reaction, providing a source for subsequent gas treatment. The condenser is located inside the combustion furnace, and its main function is to condense the gas generated by the combustion furnace, converting some of the gas components into liquid. The liquid outlet of the condenser is connected to the air inlet pipe 8, which allows the condensed liquid to be introduced into the collecting furnace 6 through the air inlet pipe 8, realizing the collection of the liquid generated by combustion.

[0050] The working principle of this utility model is as follows:

[0051] Biomass feedstock undergoes combustion reaction in the combustion furnace, and the generated gas enters the condenser in the combustion furnace. The condenser condenses the gas, turning some of the gas into liquid. This liquid flows into the air inlet pipe 8 through the liquid outlet of the condenser, while the uncondensed gas also enters the lower part of the collection furnace 6 through the air inlet pipe 8.

[0052] The gas containing particulate pollutants and tar enters the lower part of the collecting furnace 6. Under the negative pressure generated by the negative pressure fan 2352 on the air outlet duct 9, it moves upward and passes through the dust collection bag 233 on the outer wall of the dust collection filter tube 236. At this time, the particulate pollutants in the gas are filtered and intercepted by the dust collection bag 233, and then the gas enters the dust collection filter tube 236.

[0053] The gas entering the dust removal filter tube 236 flows through the oil suction tube 237 located therein. The oil suction tube 237 captures and collects the tar in the gas by means of its own structural characteristics or adsorption performance. The recovered tar flows along the oil suction tube 237. Since the end of the oil suction tube 237 away from the sealing plate 231 extends into the oil storage tank 234, the tar flows into the oil storage tank 234 for storage.

[0054] After being processed by the oil suction pipe 237 and the tar recovered, the gas is discharged through the vent 232 on the sealing plate 231, enters the upper part of the collecting furnace 6, and is finally discharged from the air outlet pipe 9 under the action of the negative pressure fan 2352.

[0055] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0056] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0057] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dust removal device for a gasifier, characterized in that, The system includes a collection furnace (6), which is equipped with a sealing plate (231). The sealing plate (231) has several ventilation ports (232) running through it. The bottom of each ventilation port (232) is connected to a dust removal filter pipe (236), and a dust removal bag (233) is fitted on the outer wall of the dust removal filter pipe (236). The top of the enclosed plate (231) is also provided with a pipe (238), which is connected to a high-pressure fan. The pipe (238) is connected to a nozzle (239) corresponding to the number of dust removal filter tubes (236). The nozzle (239) is located inside the corresponding dust removal filter tube (236). The side wall of the collecting furnace (6) is connected to an air inlet pipe (8) and an air outlet pipe (9), which are located below and above the sealing plate (231), respectively. The nozzle (239) includes a vertical tube (2391) and a hemispherical tube (2392). The top of the vertical tube (2391) is connected to the pipe (238), and the bottom of the vertical tube (2391) is connected to the hemispherical tube (2392). Both the vertical tube (2391) and the hemispherical tube (2392) are provided with a number of air outlet holes (2393).

2. The gasifier dust removal device according to claim 1, characterized in that, The bottom of the sealing plate (231) is also provided with oil suction pipes (237) corresponding to the number of vents (232). Each oil suction pipe (237) is located in the corresponding dust removal filter pipe (236), and each oil suction pipe (237) is connected to the corresponding vent (232).

3. The gasifier dust removal device according to claim 2, characterized in that, The bottom of each of the dust removal filter tubes (236) is connected to an oil storage tank (234), and the end of the oil suction tube (237) away from the sealing plate (231) extends into the oil storage tank (234).

4. A gasifier dust removal device according to claim 3, characterized in that, Each of the oil storage tanks (234) is connected to each other by a connecting pipe (2353), and an oil delivery pipe (235) is also connected to the connecting pipe (2353), which extends out to the outside of the collecting furnace (6).

5. A gasifier dust removal device according to claim 4, characterized in that, The connecting pipe (2353) is also connected to the liquid inlet pipe (2351), and the end of the liquid inlet pipe (2351) away from the connecting pipe (2353) extends out to the outside of the collecting furnace (6).

6. The gasifier dust removal device according to claim 1, characterized in that, The air outlet pipe (9) is equipped with a negative pressure fan (2352).

7. A gasifier dust removal device according to claim 1, characterized in that, A combustion furnace is provided on one side of the collecting furnace (6), and a condenser is provided inside the combustion furnace. The liquid outlet end of the condenser is connected to the air inlet pipe (8).

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