Tar and dust removal purification device for biomass gas

Abstract

The utility model relates to the technical field of biomass gas tar and dust filtration, and discloses a biomass gas tar and dust removal purification device which comprises a purification device body, a biomass gas inlet pipeline system, a biomass gas outlet pipeline system and a purification device supporting structure. The tar in the biomass gas is separated out by the change of the flow velocity of the biomass gas entering the barrel of the purification device and the change of the flow direction generated by the impact of the biomass gas and the partition plate, and the tar attached to the partition plate can adsorb part of dust in the biomass gas. Meanwhile, dust in the biomass gas is settled at the bottom of the barrel of the purification device in the process of flowing through the up-down reciprocating channel at a low speed, so that the aim of reducing the content of tar and dust in the biomass gas is fulfilled. When one of the two purification device bodies is overhauled or breaks down, the other purification device body can be used normally, so that normal gas supply of a user is guaranteed, the failure rate of the purification device is reduced, and the continuous operation time of the system is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of biomass gas tar and dust filtration technology, and more specifically, to a biomass gas tar and dust removal and purification device. Background Technology

[0002] Biomass gas is a combustible gas produced by the high-temperature pyrolysis of biomass raw materials (agricultural and forestry waste such as wood chips, bamboo, rice husks, and fruit shells) in a biomass gasifier. The combustible gas produced after the biomass raw materials undergo oxidation, reduction, pyrolysis, and drying processes in the gasifier contains tar and dust. The tar in the biomass gas, after liquefaction, can clog burner nozzles, equipment, and pipelines, affecting the normal operation of the system. Tar leaks produce irritating odors that affect the production environment. The dust in the biomass gas affects the cleanliness of the gas and can also clog equipment and pipelines, causing equipment damage or malfunctions and shutdowns.

[0003] In actual operation, biomass gas needs to be purified before use to minimize the tar and dust content. Commonly used biomass gas purification methods include spraying, bubbling water bath, and dry filtration. Spraying and bubbling water bath methods use water or alkaline solutions to wash and absorb tar and dust from the biomass gas, but these methods involve wastewater treatment, which can easily cause secondary water pollution if not handled properly. Dry filtration uses filter screens, filter cartridges, and activated carbon to adsorb and filter tar and dust from the biomass gas. However, tar and dust easily clog filter screens and cartridges, requiring frequent replacement of the filter, resulting in high operating and management costs. Furthermore, after the filter cartridges of dry filtration devices adsorb a certain amount of tar and dust, the system resistance increases, leading to insufficient output of the induced draft fan or even its inability to function properly, increasing the system failure rate. Utility Model Content

[0004] In view of this, the present invention proposes a biomass gas tar and dust removal purification device, which can reduce the tar and dust content in biomass gas, extend the continuous operation time of the device, and reduce the impact of filter device maintenance on system operation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A biomass gas tar and dust removal purification device includes:

[0007] The purification device body includes a purification device cylinder. An air inlet for installing an air inlet filter pipe is located at the upper part of the cylinder, and an air outlet for installing an air outlet filter pipe is located at the lower part. The air inlet and the air outlet are located on opposite sides of the purification device cylinder, and both the air inlet filter pipe and the air outlet filter pipe are located inside the purification device cylinder. Inside the purification device cylinder, a first vertical partition and a second vertical partition are provided, connected to the side wall of the purification device cylinder. The first vertical partition is near the air inlet, and its top is connected to the top cover of the purification device cylinder, with a gap between its bottom and the bottom plate of the purification device cylinder. The second vertical partition is near the air outlet, and its bottom is connected to the bottom plate of the purification device cylinder, with a gap between its top and the top cover of the purification device cylinder. Several inclined partitions are alternately connected to the opposing surfaces of the two vertical partitions, and all the inclined partitions are arranged at a downward angle. A tar discharge port is provided on the bottom plate of the purification device cylinder.

[0008] A biomass gas inlet pipeline system is located on the upper part of the purification device cylinder and is connected to the inlet filter pipe;

[0009] A biomass gas outlet pipeline system is located at the lower part of the purification device cylinder and is connected to the outlet filter pipe;

[0010] The purification device support structure is connected at the upper end to the purification device cylinder and at the lower end to the ground.

[0011] Preferably, the purification device body is provided in one or two sets, with the bottom of one set of the purification device body correspondingly connected to the bottom of the other set of the purification device support structure.

[0012] Preferably, the biomass gas intake pipeline system includes a biomass gas intake main pipe, a biomass gas intake branch pipe control valve, and biomass gas intake branch pipes. One end of the biomass gas intake branch pipe is connected to the biomass gas intake main pipe, and the other end is connected to the intake filter pipe. The biomass gas intake branch pipe control valve is installed on the biomass gas intake branch pipe. The two ends of the biomass gas intake main pipe are respectively provided with a first biomass gas intake main pipe interface and a second biomass gas intake main pipe interface. Both interfaces are reserved with connection flanges and are connected to the biomass gasification furnace gas pipeline in two directions. When two sets of purification device bodies are provided, the biomass gas intake main pipe and the two sets of purification device bodies are connected through the corresponding biomass gas intake branch pipes.

[0013] Preferably, the biomass gas outlet pipeline system includes a biomass gas outlet main pipe, a biomass gas outlet branch pipe control valve, and biomass gas outlet branch pipes. One end of the biomass gas outlet branch pipe is connected to the biomass gas outlet main pipe, and the other end is connected to the outlet filter pipe. The biomass gas outlet branch pipe control valve is installed on the biomass gas outlet branch pipe. The two ends of the biomass gas outlet main pipe are respectively provided with a first biomass gas outlet main pipe interface and a second biomass gas outlet main pipe interface. Both interfaces are reserved with connection flanges and are connected to the user-side gas pipeline in two directions. When two sets of purification device bodies are installed, the biomass gas outlet main pipe and the two sets of purification device bodies are connected through the corresponding biomass gas outlet branch pipes.

[0014] Preferably, an inlet filter tube inspection port is provided on the side wall of the purification device cylinder at the position corresponding to the position of the air inlet filter tube, an outlet filter tube inspection port is provided at the position corresponding to the position of the air outlet filter tube, and a first partition inspection port and a second partition inspection port are provided at the positions corresponding to the vertical partition and the inclined partition. The first partition inspection port and the second partition inspection port are located on one side of the purification device cylinder and are arranged vertically aligned.

[0015] Preferably, the tar discharge port includes a first tar discharge port and a second tar discharge port. The first tar discharge port is located at the center of the bottom plate of the purification device cylinder and is coaxial with the purification device cylinder. The second tar discharge port is close to the air outlet and is parallel to the air outlet filter tube.

[0016] Preferably, when two sets of the purification device body are provided, the first partition inspection port, the second partition inspection port, and the second tar discharge port are arranged in a mirror-symmetrical manner on the two sets of the purification device body.

[0017] Preferably, the inlet filter tube inspection port, the outlet filter tube inspection port, the first partition plate inspection port, the second partition plate inspection port, the first tar discharge port, the second tar discharge port, and the purification device cylinder are all connected by detachable flanges.

[0018] Preferably, both the inlet filter pipe and the outlet filter pipe are made of thin-walled stainless steel pipe, and circular vent holes are evenly provided on the corresponding filter pipes; one end of the inlet filter pipe is closed, and the other end is connected to the biomass gas inlet branch pipe by a flange; one end of the outlet filter pipe is closed, and the other end is connected to the biomass gas outlet branch pipe by a flange.

[0019] Preferably, the support structure of the purification device is made of steel profiles.

[0020] Compared with existing technologies, the biomass gas tar removal and dust removal purification device of this utility model has the following beneficial effects:

[0021] This invention provides a biomass gas tar and dust removal purification device. By installing perforated filter tubes on the biomass gas inlet / outlet branch pipes within the purification device cylinder, the flow velocity of the biomass gas entering the purification device cylinder is abruptly changed. Furthermore, by installing inclined baffles on the biomass gas flow channel formed by two vertical baffles within the purification device cylinder, the flow direction and velocity of the biomass gas upon impact with the baffles are abruptly changed. The change in biomass gas flow velocity and the change in flow direction caused by impact with the baffles cause tar mixed in the biomass gas to precipitate out. The tar adhering to the baffles can absorb some of the dust in the biomass gas. After the biomass gas enters the purification device cylinder, the channel space increases, and the gas velocity decreases under the action of the baffles. The vertical baffles form a reciprocating biomass gas channel within the purification device cylinder, and the dust in the biomass gas settles at the bottom of the purification device cylinder as it flows slowly through the reciprocating channel.

[0022] This invention effectively reduces the tar and dust content in biomass gas, extends the continuous operation time of the device, and also reduces the impact of filter device maintenance on system operation.

[0023] This utility model can also be equipped with two sets of purification device bodies. When one set is under maintenance or malfunctions, the other set can be used normally, thereby ensuring normal gas supply for users, reducing the failure rate of purification devices, and further extending the continuous operation time of the system. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0025] Figure 1 This is a forward axonometric structural schematic diagram of the device of this utility model.

[0026] Figure 2 This is a rear-axis view of the structure of the device of this utility model.

[0027] Figure 3 This is a frontal view of the structure of the device of this utility model.

[0028] Figure 4 This is a side view of the device of this utility model.

[0029] Figure 5 This is a cross-sectional schematic diagram of the purification device body of this utility model.

[0030] Figure 6 This is a schematic cross-sectional view of the filter tube of the device of this utility model.

[0031] In the diagram: 1-Purification device body, 2-Biomass gas inlet pipeline system, 3-Biomass gas outlet pipeline system, 4-Purification device support structure, 5-Purification device cylinder, 6-First vertical baffle, 7-Second vertical baffle, 8-Inclined baffle, 9-Inlet filter tube inspection port, 10-Outlet filter tube inspection port, 11-First baffle inspection port, 12-Second baffle inspection port, 13-First tar discharge port, 14-Second tar discharge port, 15-Biomass gas inlet main pipe, 1 6-Biomass gas inlet branch pipe control valve, 17-Biomass gas inlet branch pipe, 18-Inlet filter pipe, 19-First biomass gas inlet main pipe interface, 20-Second biomass gas inlet main pipe interface, 21-Biomass gas outlet main pipe, 22-Biomass gas outlet branch pipe control valve, 23-Biomass gas outlet branch pipe, 24-Outlet filter pipe, 25-First biomass gas outlet main pipe interface, 26-Second biomass gas outlet main pipe interface, 27-Circular vent hole. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] Example:

[0036] like Figure 1-6As shown, this embodiment provides a biomass gas tar removal and dust removal purification device, including a purification device body 1, a biomass gas inlet pipeline system 2, a biomass gas outlet pipeline system 3, and a purification device support structure 4.

[0037] The purification device body 1 includes a purification device cylinder 5. An air inlet is opened at the upper part of the purification device cylinder 5 and an air outlet is opened at the lower part. The air inlet and the air outlet are respectively located on opposite sides of the purification device cylinder 5. An air inlet filter tube 18 is installed in the air inlet and an air outlet filter tube 24 is installed in the air outlet. Both the air inlet filter tube 18 and the air outlet filter tube 24 are located inside the purification device cylinder 5.

[0038] The purification device cylinder 5 has a first vertical partition 6 and a second vertical partition 7 connected to the side wall of the purification device cylinder. The first vertical partition 6 is located near the air inlet and its top is connected to the top cover of the purification device cylinder, while its bottom has a gap with the bottom plate of the purification device cylinder. The second vertical partition 7 is located near the air outlet and its bottom is connected to the bottom plate of the purification device cylinder, while its top has a gap with the top cover of the purification device cylinder. That is, the first vertical partition 6 and the second vertical partition 7 divide the interior of the purification device cylinder into a three-pass biomass gas combustion channel.

[0039] Several inclined baffles 8 are staggered and connected to the opposing surfaces of two vertical baffles. The inclined baffles 8 are welded to the vertical baffles, and all the inclined baffles 8 are arranged at a downward angle. This increases the generation of vortices in the biomass gas within the channel, promotes the precipitation of tar contained in the gas, and allows the precipitated tar to collect downwards along the baffles to the bottom of the purification device cylinder. A tar discharge port is provided on the bottom plate of the purification device cylinder.

[0040] The biomass gas intake pipeline system 2 is located on the upper part of the purification device cylinder 5 and is connected to the intake filter pipe 18.

[0041] The biomass gas outlet pipeline system 3 is located at the lower part of the purification device cylinder 5 and is connected to the outlet filter pipe 24.

[0042] The upper end of the purification device support structure 4 is connected to the purification device cylinder 5, and the lower end is fixedly connected to the ground.

[0043] After the biomass gas enters the purification device cylinder 5 through the inlet filter pipe 18, the channel space increases and the gas velocity decreases. The gas flows downward first, then upward, and finally downward through the outlet filter pipe 24 to leave the purification device cylinder 5. Due to the reduced gas velocity, the three-pass channel increases the gas residence time, and the dust in the biomass gas settles at the bottom of the purification device cylinder, thus achieving the purpose of reducing the dust content in the biomass gas.

[0044] The purification device body 1 of this utility model is provided in one or two sets, and the bottom of one purification device body 1 is connected to a purification device support structure 4.

[0045] In a further specific embodiment, the biomass gas intake pipeline system 2 includes a biomass gas intake main pipe 15, a biomass gas intake branch pipe control valve 16, and a biomass gas intake branch pipe 17. One end of the biomass gas intake branch pipe 17 is connected to the biomass gas intake main pipe 15, and the other end is connected to the intake filter pipe 18 through a flange. The biomass gas intake branch pipe control valve 16 is installed on the biomass gas intake branch pipe 17.

[0046] The biomass gas inlet main pipe 15 is provided with a first biomass gas inlet main pipe interface 19 and a second biomass gas inlet main pipe interface 20 at both ends. Both interfaces are reserved with connection flanges, which can be connected to the biomass gasification furnace gas pipeline in two directions, which facilitates the equipment layout and pipeline connection and installation of the purification device.

[0047] When two sets of purification device body 1 are installed, the biomass gas inlet main pipe 15 is connected to the two sets of purification device body 1 through the corresponding biomass gas inlet branch pipe 17.

[0048] In a further specific embodiment, the biomass gas outlet pipeline system 3 includes a biomass gas outlet main pipe 21, a biomass gas outlet branch pipe control valve 22, and a biomass gas outlet branch pipe 23. One end of the biomass gas outlet branch pipe 23 is connected to the biomass gas outlet main pipe 21, and the other end is connected to the outlet filter pipe 24 through a flange. The biomass gas outlet branch pipe control valve 22 is installed on the biomass gas outlet branch pipe 23.

[0049] The two ends of the biomass gas outlet main pipe 21 are respectively provided with a first biomass gas outlet main pipe interface 25 and a second biomass gas outlet main pipe interface 26. Both interfaces are reserved with connection flanges, which can be connected to the user-side gas pipeline in two directions, facilitating the equipment layout and pipeline connection and installation of the purification device.

[0050] When two sets of purification device body 1 are installed, the biomass gas outlet main pipe 21 is connected to the two sets of purification device body 1 through the corresponding biomass gas outlet branch pipe 23.

[0051] In a further specific embodiment, an inlet filter pipe inspection port 9 is provided on the side wall of the purification device cylinder at the position corresponding to the inlet filter pipe 18, an outlet filter pipe inspection port 10 is provided at the position corresponding to the outlet filter pipe 24, and a first partition inspection port 11 and a second partition inspection port 12 are provided at the positions corresponding to the vertical partition and the inclined partition 8. The first partition inspection port 11 and the second partition inspection port 12 are located on one side of the purification device cylinder 5 and are arranged vertically aligned.

[0052] Setting up inlet / outlet filter tube inspection ports on the purification device cylinder ensures that the inlet / outlet filter tubes can be cleaned during maintenance, and setting up two inspection ports on the upper and lower baffles ensures that all inclined baffles can be cleaned during maintenance.

[0053] In a further specific embodiment, the tar discharge port includes a first tar discharge port 13 and a second tar discharge port 14. The first tar discharge port 13 is located at the center of the bottom plate of the purification device cylinder and is coaxial with the purification device cylinder 5. The second tar discharge port 14 is close to the air outlet and is parallel to the air outlet filter tube 24.

[0054] The second vertical partition 7, which is connected to the bottom plate of the purification device cylinder, divides the bottom of the purification device cylinder into two independent spaces. The tar released from the biomass gas is collected in the two independent spaces at the bottom and discharged through the first tar discharge port 13 and the second tar discharge port 14.

[0055] In a further specific embodiment, when two sets of purification device bodies 1 are provided, the first partition inspection port 11, the second partition inspection port 12, and the second tar discharge port 14 are arranged symmetrically in mirror image on the two sets of purification device bodies 1. By setting the partition inspection ports and the second tar discharge port of the two sets of purification device bodies 1 to be arranged symmetrically in mirror image on the outside of the equipment, maintenance work such as inspection and cleaning can be facilitated.

[0056] In a further specific embodiment, the inlet filter tube inspection port 9, the outlet filter tube inspection port 10, the first partition plate inspection port 11, the second partition plate inspection port 12, the first tar discharge port 13, the second tar discharge port 14, and the purification device cylinder 5 are all connected by detachable flanges.

[0057] In a further specific embodiment, both the inlet filter pipe 18 and the outlet filter pipe 24 are made of thin-walled stainless steel pipe, and circular vent holes 27 are evenly provided on the corresponding filter pipes; one end of the inlet filter pipe 18 is closed, and the other end is connected to the biomass gas inlet branch pipe 17 by a flange; one end of the outlet filter pipe 24 is closed, and the other end is connected to the biomass gas outlet branch pipe 23 by a flange.

[0058] Biomass gas enters the inlet filter pipe 18 through the biomass gas inlet branch pipe 17. When the biomass gas passes through the circular vent hole 27 on the filter pipe, the flow velocity changes drastically, causing some of the tar contained in the gas to precipitate and collect at the bottom of the purification device cylinder. After passing through the three-pass channel, the biomass gas enters the biomass gas outlet branch pipe 23 through the outlet filter pipe 24. When the biomass gas passes through the circular vent hole 27 on the filter pipe, the flow velocity changes drastically, causing the remaining tar contained in the gas to precipitate further and collect at the bottom of the purification device cylinder, thereby reducing the tar content of the biomass gas.

[0059] In a further specific embodiment, the purification device support structure 4 is made of steel profile and is used to support the purification device body 1 to ensure the installation and fixation of the purification device equipment.

[0060] When the biomass gas tar removal and dust removal purification device of this utility model includes two sets of purification device bodies 1, the two sets of purification device bodies 1 are respectively connected to the biomass gas inlet branch pipe 17 and the biomass gas outlet branch pipe 23 via corresponding biomass gas inlet main pipe 15 and biomass gas outlet main pipe 21. A biomass gas inlet branch pipe control valve 16 and a biomass gas outlet branch pipe control valve 22 are respectively installed on the biomass gas inlet branch pipe 17 and the biomass gas outlet branch pipe 23.

[0061] During normal operation, the control valve of one set of purification devices is closed as a backup. When the other set of purification devices needs maintenance or malfunctions and cannot work properly, the control valve of the backup purification device can be opened to carry out maintenance without shutting down the system. This can effectively reduce the failure rate of the purification devices and ensure continuous operation of the system.

[0062] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0063] 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 biomass gas tar removal and dust purification device, characterized in that, include: The purification device body includes a purification device cylinder. An air inlet for installing an air inlet filter pipe is located at the upper part of the cylinder, and an air outlet for installing an air outlet filter pipe is located at the lower part. The air inlet and the air outlet are located on opposite sides of the purification device cylinder, and both the air inlet filter pipe and the air outlet filter pipe are located inside the purification device cylinder. Inside the purification device cylinder, a first vertical partition and a second vertical partition are provided, connected to the side wall of the purification device cylinder. The first vertical partition is near the air inlet, and its top is connected to the top cover of the purification device cylinder, with a gap between its bottom and the bottom plate of the purification device cylinder. The second vertical partition is near the air outlet, and its bottom is connected to the bottom plate of the purification device cylinder, with a gap between its top and the top cover of the purification device cylinder. Several inclined partitions are alternately connected to the opposing surfaces of the two vertical partitions, and all the inclined partitions are arranged at a downward angle. A tar discharge port is provided on the bottom plate of the purification device cylinder. A biomass gas inlet pipeline system is located on the upper part of the purification device cylinder and is connected to the inlet filter pipe; A biomass gas outlet pipeline system is located at the lower part of the purification device cylinder and is connected to the outlet filter pipe; The purification device support structure is connected at the upper end to the purification device cylinder and at the lower end to the ground.

2. The biomass gas tar removal and dust removal purification device according to claim 1, characterized in that, The purification device body is provided in one or two sets, with the bottom of one set of the purification device body correspondingly connected to the bottom of the other set of the purification device support structure.

3. The biomass gas tar removal and dust removal purification device according to claim 2, characterized in that, The biomass gas intake pipeline system includes a biomass gas intake main pipe, a biomass gas intake branch pipe control valve, and biomass gas intake branch pipes. One end of the biomass gas intake branch pipe is connected to the biomass gas intake main pipe, and the other end is connected to the intake filter pipe. The biomass gas intake branch pipe control valve is installed on the biomass gas intake branch pipe. The two ends of the biomass gas intake main pipe are respectively provided with a first biomass gas intake main pipe interface and a second biomass gas intake main pipe interface. Both interfaces are reserved with connection flanges and are connected to the biomass gasification furnace gas pipeline in two directions. When two sets of purification device bodies are installed, the biomass gas intake main pipe is connected to the two sets of purification device bodies through the corresponding biomass gas intake branch pipes.

4. The biomass gas tar removal and dust removal purification device according to claim 3, characterized in that, The biomass gas outlet pipeline system includes a biomass gas outlet main pipe, a biomass gas outlet branch pipe control valve, and biomass gas outlet branch pipes. One end of the biomass gas outlet branch pipe is connected to the biomass gas outlet main pipe, and the other end is connected to the outlet filter pipe. The biomass gas outlet branch pipe control valve is installed on the biomass gas outlet branch pipe. The two ends of the biomass gas outlet main pipe are respectively provided with a first biomass gas outlet main pipe interface and a second biomass gas outlet main pipe interface. Both interfaces are reserved with connection flanges and are connected to the user-side gas pipeline in two directions. When two sets of purification device bodies are installed, the biomass gas outlet main pipe and the two sets of purification device bodies are connected through the corresponding biomass gas outlet branch pipes.

5. The biomass gas tar removal and dust removal purification device according to claim 2, characterized in that, An inlet filter tube inspection port is provided on the side wall of the purification device cylinder at the position corresponding to the position of the air inlet filter tube, and an outlet filter tube inspection port is provided at the position corresponding to the position of the air outlet filter tube. A first partition inspection port and a second partition inspection port are provided at the positions corresponding to the vertical partition and the inclined partition. The first partition inspection port and the second partition inspection port are located on one side of the purification device cylinder and are arranged vertically aligned.

6. The biomass gas tar removal and dust removal purification device according to claim 5, characterized in that, The tar discharge outlet includes a first tar discharge outlet and a second tar discharge outlet. The first tar discharge outlet is located at the center of the bottom plate of the purification device cylinder and is coaxial with the purification device cylinder. The second tar discharge outlet is close to the air outlet and is parallel to the air outlet filter tube.

7. The biomass gas tar removal and dust removal purification device according to claim 6, characterized in that, When two sets of the purification device body are provided, the first partition inspection port, the second partition inspection port, and the second tar discharge port are arranged in a mirror-symmetrical manner on the two sets of the purification device body.

8. The biomass gas tar removal and dust removal purification device according to claim 6, characterized in that, The inlet filter tube inspection port, the outlet filter tube inspection port, the first partition inspection port, the second partition inspection port, the first tar discharge port, the second tar discharge port, and the purification device cylinder are all connected by detachable flanges.

9. A biomass gas tar removal and dust removal purification device according to claim 4, characterized in that, Both the inlet filter pipe and the outlet filter pipe are made of thin-walled stainless steel pipe, and circular vent holes are evenly arranged on the corresponding filter pipes; one end of the inlet filter pipe is closed, and the other end is connected to the biomass gas inlet branch pipe by a flange; one end of the outlet filter pipe is closed, and the other end is connected to the biomass gas outlet branch pipe by a flange.

10. A biomass gas tar removal and dust removal purification device according to claim 1, characterized in that, The supporting structure of the purification device is made of steel profiles.

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