A special device for tar removal of gasification furnace

Abstract

This invention provides a dedicated device for tar removal from a gasifier, relating to the field of waste gas treatment technology. It includes: a heat exchange condensation chamber, the main body of which consists of heat exchangers arranged in a staggered pattern (top-bottom and back-to-back). A pre-embedded water tank is connected to the bottom of the heat exchange condensation chamber via a pipe. A heat exchange channel is connected to one side of the pre-embedded water tank via a pipe, and other heat exchange channels are connected to the other side via pipes. The exterior of each heat exchange channel is integrally equipped with equally spaced heat dissipation fins. A circulating pump is fixedly connected to the top of the heat exchange condensation chamber. By setting up the heat exchange condensation chamber, centrifugal chamber, and electrostatic filter chamber, a complete tar removal system is formed, providing a step-by-step tar cleaning function for the high-temperature flue gas from the gasifier. First, the heat exchange condensation chamber rapidly cools the flue gas, condensing and precipitating most of the tar. Then, centrifugal separation removes residual tar impurities from the flue gas. Finally, an electrostatic adsorption net captures fine tar particles in the flue gas.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and in particular to a special device for removing tar from a gasifier. Background Technology

[0002] During fuel pyrolysis and gasification, gasifiers produce high-temperature flue gas containing tar. Tar is easily condensed at room temperature, which can cause blockage and corrosion of subsequent gas pipelines, valves, and gas-using equipment, reducing the operational stability and service life of the gasification system. It can also reduce the calorific value of the fuel gas and cause environmental pollution when emitted with the flue gas. Therefore, efficient tar removal is the core element for the stable operation of the gasifier system.

[0003] Existing gasifier tar removal devices mostly employ single condensation and electrostatic adsorption processes or simple series connection of multiple processes, which lack synergy, have poor tar removal effect, low purification efficiency, lack chamber pressure monitoring linkage, flue gas pressure fluctuations affect purification effect, pose leakage risk, and have insufficient adaptability to tar discharge structure. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the prior art, the present invention provides a special device for removing tar from a gasifier.

[0005] This invention provides a dedicated device for tar removal from a gasifier, specifically comprising: a heat exchange condensing chamber, the main body of which consists of heat exchangers arranged alternately vertically and horizontally; a pre-embedded water tank is connected to the bottom of the heat exchange condensing chamber via a pipe; a heat exchange channel is connected to one side of the pre-embedded water tank via a pipe, and other heat exchange channels are connected to the other side of the heat exchange channel via pipes; heat exchange channels are integrally provided with equidistantly distributed heat dissipation fins on their exterior; a circulating pump is fixedly connected to the top of the heat exchange condensing chamber; a pipe is connected to the circulating pump outside the outermost heat exchange channel; an electrostatic filtration chamber, the top of which is fixedly provided with a centrifugal chamber; a pipe connects the upper front of the centrifugal chamber and the lower front of the electrostatic filtration chamber; speed limiters are connected to the lower rear of the heat exchange condensing chamber, the bottom right side of the electrostatic filtration chamber, and the bottom front side of the centrifugal chamber; each speed limiter has a rotating flow control impeller inside, and a flow control motor is fixedly provided outside each speed limiter, with the flow control motor and the flow control impeller being drivenly connected; an integrated oil drain pipe is connected to the bottom of the three sets of speed limiters.

[0006] Optionally, a flue gas inlet pipe is integrally provided in the middle of the front side of the heat exchange condensing oil tank; a water-filling vertical cylinder is fixedly connected to the front top of the heat exchange condensing oil tank, and the water-filling vertical cylinder is a cylindrical tempered glass; a sealing plug is fixedly provided on the top of the water-filling vertical cylinder, a handle is integrally provided on the top of the sealing plug, a downward-turning regulating pipe is connected to the top of the sealing plug, and a dust cover is fixedly provided at the bottom end of the regulating pipe.

[0007] Optionally, the rear side of the heat exchange condensing oil tank is a triangular extended space, and a pipe is provided above the rear side of the heat exchange condensing oil tank to connect to the front upper part of the centrifuge chamber.

[0008] Optionally, the electrostatic filter chamber is equipped with an internal array of electrostatic adsorption nets arranged with a left-high and right-low orientation, and the lower left side of the electrostatic filter chamber is also arranged with a right-high orientation. An electrostatic generator is fixedly installed in the upper left of the electrostatic filter chamber, which can output static electricity to the electrostatic adsorption nets. An exhaust pipe is connected to the lower left of the electrostatic filter chamber.

[0009] Optionally, a groove is provided at the bottom of the centrifuge chamber; a centrifuge impeller is rotatably arranged inside the centrifuge chamber, and a centrifuge motor is fixedly arranged at the rear side of the centrifuge chamber, with the centrifuge motor and the centrifuge impeller being connected in a driving connection; a semi-circular groove is provided in the middle of the rear side of each blade of the centrifuge impeller.

[0010] Optionally, a filter box is connected to the left side of the exhaust pipe, a filter plate is fixedly installed inside the filter box, and an air pump is fixedly connected to the left side of the filter box.

[0011] Optionally, the inner cavities of the heat exchange condensing oil chamber, the electrostatic filtration chamber, and the centrifugal chamber are all equipped with gas pressure sensors, which can collect flue gas pressure data in the corresponding chamber in real time; the device is equipped with a control terminal, and the gas pressure sensors can be wirelessly connected to the control terminal to transmit and report the pressure data wirelessly in real time.

[0012] Optionally, the circulating pump, flow control motor, and centrifugal motor are all connected to the control terminal via wireless signals, and can adjust their own operating parameters according to the flue gas pressure data collected by the gas pressure sensor. When the collected pressure is higher than the preset upper limit threshold, the operating power and speed are increased simultaneously to accelerate the flue gas flow and tar separation and discharge efficiency. When the collected pressure is lower than the preset lower limit threshold, the operating parameters are reduced simultaneously to maintain the stable operation of the device.

[0013] Optionally, the inner cavities of the pre-embedded water tank and the water-filling cylinder are equipped with liquid level sensors. The liquid level sensors can collect the coolant level data at the corresponding position in real time and can be wirelessly connected to the control terminal or control program. The control terminal or control program can trigger early warning prompts and adjust the operating status of the circulation pump accordingly.

[0014] The beneficial effects are as follows: By setting up a heat exchange condensation chamber, a centrifugal chamber, and an electrostatic filtration chamber, a complete tar removal system is formed, providing a step-by-step tar removal function for the high-temperature flue gas from the gasifier. First, the heat exchange condensation chamber rapidly cools the flue gas, condensing and precipitating most of the tar. Then, the centrifugal chamber performs centrifugal separation to remove residual tar impurities in the flue gas. Finally, the electrostatic adsorption mesh captures the fine tar particles in the flue gas. The multiple structures work together to optimize the traditional structure and effectively improve the overall tar removal efficiency.

[0015] By setting up a pre-embedded water tank, heat exchange channel, and heat sink, and combining it with a circulating pump to form an underground circulating cooling structure, the system relies on the constant underground temperature environment to continuously dissipate heat and cool down, ensuring that the tar in the flue gas can be fully condensed and precipitated. At the same time, speed limiters and integrated oil drain pipes are installed at the bottom of each compartment to collect and discharge condensed tar at a uniform speed. The overall sealing is stronger, preventing flue gas leakage. The optimized structure for tar discharge effectively improves the safety of equipment use and the regularity of tar collection.

[0016] By setting up pressure sensors, liquid level sensors, and control terminals, the air pressure and cooling water level inside the chamber are monitored in real time throughout the process. The operating speed of various motors and circulating pumps is automatically adjusted according to changes in flue gas pressure, adaptively matching the flue gas flow conditions. When the water level is abnormal, it can also provide timely early warning feedback, reducing the impact of pressure fluctuations. The operation and control structure of the device is reasonably optimized, effectively improving the stability and automation of the entire device. Attached Figure Description

[0017] Figure 1 A three-dimensional structural schematic diagram of an embodiment of the present invention is shown; Figure 2 A schematic diagram of the axial structure of an embodiment of the present invention is shown; Figure 3 A side-view structural schematic diagram of an embodiment of the present invention is shown; Figure 4 A three-dimensional cross-sectional view of an embodiment of the present invention is shown; Figure 5 An embodiment of the present invention is shown. Figure 4 Another structural diagram from a different angle; Figure 6 This is a three-dimensional cross-sectional view of the heat exchange condensing oil tank in an embodiment of the present invention; Figure 7 A three-dimensional cross-sectional view of the centrifuge chamber in an embodiment of the present invention is shown; Figure 8 A three-dimensional cross-sectional view of the flow limiter in an embodiment of the present invention is shown.

[0018] List of reference numerals in the attached diagram: 1. Heat exchange condensing oil tank; 101. Flue gas inlet pipe; 102. Water-filled vertical cylinder; 103. Sealing plug; 104. Regulating pipe; 2. Embedded water tank; 3. Heat exchange channel; 301. Heat sink; 4. Circulating pump; 5. Electrostatic filter chamber; 501. Electrostatic adsorption mesh; 502. Electrostatic generator; 503. Exhaust pipe; 6. Centrifugal chamber; 601. Centrifugal impeller; 602. Centrifugal motor; 7. Speed ​​limiter; 701. Flow control impeller; 702. Flow control motor; 8. Integrated oil drain pipe; 9. Filter box; 901. Filter plate; 10. Air pump. Detailed Implementation

[0019] To make the objectives, solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention.

[0020] Example 1: Please refer to the accompanying drawings in the instruction manual, such as... Figures 1 to 8 As shown: This invention proposes a dedicated device for tar removal from a gasifier, comprising: a heat exchange condensing chamber 1, the main body of which consists of heat exchangers arranged alternately vertically and horizontally; a pre-embedded water tank 2 connected to the bottom of the heat exchange condensing chamber 1 via a pipe; a heat exchange channel 3 connected to one side of the pre-embedded water tank 2 via a pipe, and other heat exchange channels 3 connected to the other side of the heat exchange channel 3 via pipes; heat exchange channels 3 are integrally provided with equidistantly distributed heat dissipation fins 301 on their exterior; a circulating pump 4 is fixedly connected to the top of the heat exchange condensing chamber 1; and a pipe is connected to the outermost heat exchange channel 3 to the circulating pump 4. A ring pump 4; an electrostatic filter chamber 5, with a centrifugal chamber 6 fixedly installed on the top of the electrostatic filter chamber 5, and a pipe connecting the upper front of the centrifugal chamber 6 and the lower front of the electrostatic filter chamber 5; a speed limiter 7 is connected to the lower rear of the heat exchange condensing oil chamber 1, the bottom right side of the electrostatic filter chamber 5, and the bottom front side of the centrifugal chamber 6, with a flow control impeller 701 rotating inside each speed limiter 7, and a flow control motor 702 fixedly installed outside each speed limiter 7, with the flow control motor 702 drivingly connected to the flow control impeller 701; and an integrated oil drain pipe 8 is connected to the bottom of the three sets of speed limiters 7.

[0021] Among them, a flue gas inlet pipe 101 is integrally installed in the middle of the front side of the heat exchange condensing oil tank 1; a water filling cylinder 102 is fixedly connected to the front top of the heat exchange condensing oil tank 1, and the water filling cylinder 102 is a cylindrical tempered glass; a sealing plug 103 is fixedly installed on the top of the water filling cylinder 102, and a handle is integrally installed on the top of the sealing plug 103; a downward-turning regulating pipe 104 is connected to the top of the sealing plug 103, and a dust cover is fixedly installed at the bottom end of the regulating pipe 104.

[0022] The rear side of the heat exchange condensing oil tank 1 is a triangular expansion space, and a pipe is set on the upper rear side of the heat exchange condensing oil tank 1 to connect to the upper front of the centrifuge tank 6.

[0023] The electrostatic filter chamber 5 has an internal array of electrostatic adsorption nets 501 arranged with a left-high and right-low orientation, and the lower left side of the electrostatic filter chamber 5 is lower than the right side. An electrostatic generator 502 is fixedly installed in the upper left of the electrostatic filter chamber 5, and the electrostatic generator 502 can output static electricity to the electrostatic adsorption nets 501. An exhaust pipe 503 is connected to the lower left of the electrostatic filter chamber 5.

[0024] The centrifuge chamber 6 has a groove at the bottom inside; a centrifuge impeller 601 is rotatably installed inside the centrifuge chamber 6; a centrifuge motor 602 is fixedly installed on the rear side of the centrifuge chamber 6; the centrifuge motor 602 is connected to the centrifuge impeller 601 in a transmission connection; a semi-circular groove is opened in the middle of the rear side of the blades of the centrifuge impeller 601.

[0025] The exhaust pipe 503 is connected to a filter box 9 on the left side, a filter plate 901 is fixedly installed inside the filter box 9, and an air pump 10 is fixedly connected to the left side of the filter box 9.

[0026] Among them, the inner cavities of the heat exchange condensing oil chamber 1, the electrostatic filtration chamber 5 and the centrifugal chamber 6 are all equipped with gas pressure sensors, which can collect flue gas pressure data in the corresponding chamber in real time; the device is equipped with a control terminal, and the gas pressure sensors can be wirelessly connected to the control terminal to transmit and report the pressure data wirelessly in real time.

[0027] Among them, the circulating pump 4, the flow control motor 702 and the centrifugal motor 602 are all connected to the control terminal via wireless signals. They can adjust their own operating parameters according to the flue gas pressure data collected by the gas pressure sensor. When the collected pressure is higher than the preset upper limit threshold, the operating power and speed are increased simultaneously to accelerate the flue gas flow and tar separation and discharge efficiency. When the collected pressure is lower than the preset lower limit threshold, the operating parameters are reduced simultaneously to maintain the stable operation of the device.

[0028] The inner cavities of the pre-embedded water tank 2 and the water-filling vertical cylinder 102 are equipped with liquid level sensors. The liquid level sensors can collect the coolant level data at the corresponding position in real time and can be wirelessly connected to the control terminal or control program. The control terminal or control program can trigger early warning prompts and adjust the operating status of the circulating pump 4 accordingly.

[0029] Pre-buried water tank 2 and heat exchange channel 3 are installed underground in advance; the number of heat exchange channels 3 can be increased or decreased as needed, and the layout can be adjusted according to the usage requirements. When adjusting, it is only necessary to ensure that the pipe connection is unobstructed.

[0030] Open the sealing plug 103 and fill the water-filling cylinder 102 with water. The water flows downward into the pre-embedded water tank 2 and the heat exchange channel 3 until they are completely filled. With the operation of the circulation pump 4, the water fills the heat exchange condensing oil tank 1, the pre-embedded water tank 2 and the heat exchange channel 3. Air bubbles in the water circuit are discharged through the water-filling cylinder 102 to ensure that there are no air bubbles left in the water circuit. Then fill the water-filling cylinder 102 with water.

[0031] Install the sealing plug 103 to seal the water-filled vertical cylinder 102, and realize the system's air regulation function through the air regulation pipe 104.

[0032] Flue gas inlet: Connect flue gas inlet pipe 101 to the gas outlet of the gasifier. The flue gas produced by the gasifier is discharged into flue gas inlet pipe 101, and then enters the heat exchange condensing oil chamber 1 and flows backward along the chamber body.

[0033] Heat exchange condensation and decoking: The water circuit is continuously circulated by the circulating pump 4. The water flows from top to bottom through the heat exchange condensation chamber 1, continuously cooling the chamber body, absorbing the heat of the heat exchange condensation chamber 1 and releasing it to the ground, thereby rapidly cooling the flue gas passing through the chamber, causing the tar in the flue gas to condense quickly and converge downwards; the remaining flue gas and a small amount of residual tar continue to flow upwards.

[0034] Centrifugal separation and impurity removal: Flue gas enters the centrifugal chamber 6, driving the centrifugal impeller 601 to rotate at high speed, continuously centrifuging the flue gas in the chamber. Through inertia, impurities such as tar in the flue gas are thrown to the inner wall of the centrifugal chamber 6. The impurities flow downward along the inner wall and gather in the lower part of the centrifugal chamber 6.

[0035] Electrostatic fine filtration purification: The flue gas continues to flow downward into the electrostatic filter chamber 5, where the electrostatic generator 502 provides static electricity to the electrostatic adsorption net 501, adsorbing the finest tar particles in the flue gas. The adsorbed tar gathers on the outer wall of the electrostatic adsorption net 501 and flows downward.

[0036] Clean flue gas emission: The purified flue gas is discharged from the device through exhaust pipe 503.

[0037] Example 2: Based on Example 1, the tar collected in the lower part of the heat exchange condensation tank 1, electrostatic filter tank 5, and centrifugal tank 6 cannot flow directly downwards due to the interception of the flow control impeller 701; by starting the flow control motor 702 to drive the flow control impeller 701 to rotate, the tar can be discharged downwards at a limited speed.

[0038] This conveying method is a displacement conveying method, which can prevent the direct leakage of flue gas and maintain the stability of the internal pressure of the device.

[0039] Example 3: Based on Example 1, if the output power of the gasifier is insufficient, a filter box 9 and a vacuum pump 10 can be installed. The vacuum pump 10 actively draws in the air to speed up the flow of flue gas. A filter plate 901 can also be used to assist in filtration. The filter plate 901 can be disassembled and replaced. It can also be replaced by filter cotton, carbon fiber filling, etc., as needed.

[0040] The specific usage and function of this embodiment: In this invention, a pre-buried water tank 2 and a heat exchange channel 3 are pre-buried underground. The number of heat exchange channels 3 can be increased as needed. The arrangement of heat exchange channels 3 can also be adjusted according to usage needs. The connection of the pipes can be maintained by adjusting the pipes. Open the sealing plug 103 and fill the water-filling cylinder 102 with water. The water flows downward into the embedded water tank 2 and the heat exchange channel 3, filling the embedded water tank 2 and the heat exchange channel 3. With the help of the circulating pump 4, the water can fill the heat exchange condensing oil tank 1, the embedded water tank 2 and the heat exchange channel 3. Air bubbles will be discharged in the water-filling cylinder 102 to ensure that there are no air bubbles in the water circuit. Then fill the water-filling cylinder 102 with water as well. Then install the sealing plug 103 to seal the water-filling cylinder 102. The regulating pipe 104 provides the regulating function. The flue gas inlet pipe 101 is connected to the gas outlet of the gasifier, and the flue gas is discharged into the flue gas inlet pipe 101; The flue gas flows backward through the interior of the heat exchange condensing oil chamber 1; The circulating pump 4 continuously circulates water, which flows from top to bottom through the heat exchange condensing oil chamber 1, continuously cooling the heat exchange condensing oil chamber 1 and absorbing and releasing the heat of the heat exchange condensing oil chamber 1 into the ground. This, in turn, cools the flue gas that flows from front to back through the heat exchange condensing oil chamber 1, causing the tar to condense rapidly and converge downwards. The remaining flue gas and a small amount of residual tar continue to rise. The flue gas enters the centrifugal chamber 6, which drives the centrifugal impeller 601 to rotate at high speed, continuously centrifuging the air inside the centrifugal chamber 6. Then, through inertia, the tar and other impurities in the flue gas are thrown into the inner wall of the centrifugal chamber 6, flowing downward along the inner wall of the centrifugal chamber 6 and converging at the bottom inside the centrifugal chamber 6. The flue gas continues to flow downward into the electrostatic filter chamber 5, where the electrostatic generator 502 provides static electricity to the electrostatic adsorption net 501, further adsorbing the finest tar particles. Then the tar gathers outside the electrostatic adsorption net 501 and flows downward. The flue gas was discharged from exhaust pipe 503; Tar accumulates inside the heat exchange condensation chamber 1, electrostatic filter chamber 5, and centrifugal chamber 6 at the bottom. It cannot flow directly down due to the interception of the flow control impeller 701. The flow control motor 702 is started to drive the flow control impeller 701 to rotate, which can discharge the tar downward at a limited speed. This is a displacement conveying method, which can avoid the direct discharge of flue gas and stabilize the internal pressure of the device. The tar is centrally transported and recovered from the integrated oil drain pipe 8. If the gasifier's output power is insufficient, a filter box 9 and a vacuum pump 10 can be installed. The vacuum pump 10 can actively draw in the gas to accelerate the flow of flue gas, and a filter plate 901 can also be used for auxiliary filtration.

Claims

1. A special device for removing tar from a gasifier, characterized in that, include: The heat exchange condensing oil tank (1) is composed of heat exchangers arranged alternately in the upper and lower and front and back. A pre-embedded water tank (2) is connected to the bottom of the heat exchange condensing oil tank (1) through a pipe. A heat exchange channel (3) is connected to one side of the pre-embedded water tank (2) through a pipe. Other heat exchange channels (3) are connected to the other side of the heat exchange channel (3) through a pipe. Heat exchange fins (301) are integrally arranged at equal intervals on the outside of the heat exchange channel (3). A circulation pump (4) is fixedly connected to the top of the heat exchange condensing oil tank (1). A pipe is connected to the circulation pump (4) outside the outermost heat exchange channel (3). Electrostatic filter chamber (5) is a static filter chamber. A centrifugal chamber (6) is fixedly installed on the top of the electrostatic filter chamber (5). A pipe is connected between the front upper part of the centrifugal chamber (6) and the front lower part of the electrostatic filter chamber (5). A speed limiter (7) is connected to the rear lower part of the heat exchange condensing oil chamber (1), the bottom right side of the electrostatic filter chamber (5), and the front bottom of the centrifugal chamber (6). A flow control impeller (701) is rotatably installed inside the speed limiter (7). A flow control motor (702) is fixedly installed outside the speed limiter (7). The flow control motor (702) is connected to the flow control impeller (701) for transmission. An integrated oil drain pipe (8) is connected to the bottom of the three sets of speed limiters (7).

2. The special device for tar removal from a gasifier as described in claim 1, characterized in that, The heat exchange condensing oil tank (1) is integrally provided with a flue gas inlet pipe (101) in the middle of the front side; a water filling cylinder (102) is fixedly connected to the front top of the heat exchange condensing oil tank (1), and the water filling cylinder (102) is a cylindrical tempered glass; a sealing plug (103) is fixedly provided on the top of the water filling cylinder (102), and a handle is integrally provided on the top of the sealing plug (103). A downward-turning regulating pipe (104) is connected to the top of the sealing plug (103), and a dust cover is fixedly provided at the bottom end of the regulating pipe (104).

3. The special device for tar removal from a gasifier as described in claim 1, characterized in that, The rear side of the heat exchange condensing oil tank (1) is a triangular extended space, and a pipe is provided above the rear side of the heat exchange condensing oil tank (1) to connect to the front upper part of the centrifugal tank (6).

4. The special device for tar removal from a gasifier as described in claim 1, characterized in that, The electrostatic filter chamber (5) is fixedly arranged with an electrostatic adsorption net (501) that is higher on the left and lower on the right. The lower part of the electrostatic filter chamber (5) is higher on the left and lower on the right. An electrostatic generator (502) is fixedly arranged on the upper left of the electrostatic filter chamber (5). The electrostatic generator (502) can output static electricity to the electrostatic adsorption net (501). An exhaust pipe (503) is connected to the lower left of the electrostatic filter chamber (5).

5. The special device for tar removal from a gasifier as described in claim 1, characterized in that, The centrifuge chamber (6) has a groove at the bottom inside; a centrifuge impeller (601) is rotatably installed inside the centrifuge chamber (6); a centrifuge motor (602) is fixedly installed on the rear side of the centrifuge chamber (6); the centrifuge motor (602) is connected to the centrifuge impeller (601) in a transmission connection; a semi-circular groove is opened in the middle of the rear side of the blades of the centrifuge impeller (601).

6. The special device for tar removal from a gasifier as described in claim 4, characterized in that, A filter box (9) is connected to the left side of the exhaust pipe (503), a filter plate (901) is fixedly installed inside the filter box (9), and an air pump (10) is fixedly connected to the left side of the filter box (9).

7. The special device for tar removal from a gasifier as described in claim 1, characterized in that, Gas pressure sensors are installed in the inner cavities of the heat exchange condensing oil chamber (1), electrostatic filtration chamber (5) and centrifugal chamber (6). The gas pressure sensors can collect flue gas pressure data in the corresponding chamber in real time. The device is equipped with a control terminal. The gas pressure sensors can be wirelessly connected to the control terminal to transmit and report the pressure data wirelessly in real time.

8. The special device for tar removal from a gasifier as described in claim 7, characterized in that, The circulating pump (4), the flow control motor (702), and the centrifugal motor (602) are all connected to the control terminal via wireless signals. They can adjust their own operating parameters according to the flue gas pressure data collected by the gas pressure sensor. When the collected pressure is higher than the preset upper limit threshold, the operating power and speed are increased simultaneously to accelerate the flue gas flow and tar separation and discharge efficiency. When the collected pressure is lower than the preset lower limit threshold, the operating parameters are reduced simultaneously to maintain the stable operation of the device.

9. The special device for tar removal from a gasifier as described in claim 8, characterized in that, The inner cavities of the pre-embedded water tank (2) and the water-filling cylinder (102) are both equipped with liquid level sensors. The liquid level sensors can collect the coolant level data at the corresponding position in real time and can be wirelessly connected to the control terminal or control program. The control terminal or control program can trigger early warning prompts and adjust the operating status of the circulating pump (4).

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