Tar content measuring device in continuous pyrolysis process of multi-layer bent plate

Abstract

The invention relates to the field of tar content detection, in particular to a device for measuring tar content in a continuous pyrolysis process of a multi-layer bent plate, which comprises a detection box, a gas inlet cavity and a heat preservation chamber are arranged in the detection box, the gas inlet end of the gas inlet cavity is communicated with the outside, and the gas outlet end of the gas inlet cavity is communicated with the heat preservation chamber; a measuring pipe is horizontally arranged in the heat preservation chamber, one end of the measuring pipe is communicated with the air outlet end of the air inlet channel, the other end of the measuring pipe penetrates through the heat preservation chamber and is communicated with an air outlet in the detection box, transition pipes are arranged at the two ends of the measuring pipe respectively, the two ends of each transition pipe are communicated with the measuring pipe, and detection assemblies are arranged on the transition pipes. According to the invention, the angle change of the pivot can be accurately detected and measured in a potential measurement mode of the angle sensor, and the weight change of the adsorption film paper is visually fed back, so that the tar content in the pyrolysis gas can be analyzed, and the detection precision is high.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tar content detection, and particularly relates to a device for measuring tar content in a multilayer curved plate continuous pyrolysis process. BACKGROUND

[0002] Biomass pyrolysis gas, also known as biomass fuel gas or biomass synthesis gas, is a combustible gas produced by the pyrolysis of biomass at high temperatures, using crop straw, forest waste, edible fungus residue, poultry manure, sewage sludge and other materials containing biomass as raw materials.

[0003] In the continuous pyrolysis process of the multilayer curved plate, the plate fuel is degraded under the condition of inert atmosphere or limited oxygen supply to generate pyrolysis gas, tar and biomass carbon. Tar is one of the degradation products, which is mainly composed of macromolecular organic compounds and has a high calorific value. The detection of tar content in the pyrolysis gas is an important part in the field of biomass energy utilization. The current tar content measuring device has a general tar trapping and absorption effect, resulting in inaccurate tar content detection results. SUMMARY

[0004] The present application aims to provide a device for measuring tar content in a multilayer curved plate continuous pyrolysis process, which aims to solve the above technical problems.

[0005] The purpose of the present application can be achieved by the following technical solutions:

[0006] A device for measuring tar content in a multilayer curved plate continuous pyrolysis process, comprising a detection box, wherein an observation window and a control panel are arranged on the front end face of the detection box, an air inlet cavity and a heat preservation chamber are arranged in the detection box, the air inlet end of the air inlet cavity is in communication with the outside, the air outlet end of the air inlet cavity is in communication with the heat preservation chamber, a measuring tube is horizontally arranged in the heat preservation chamber, one end of the measuring tube is in communication with the air outlet end of the air inlet cavity, the other end of the measuring tube penetrates through the heat preservation chamber and is in communication with an air outlet on the detection box, transition tubes are arranged at both ends of the measuring tube, and each transition tube is in communication with the measuring tube at both ends.

[0007] The detection assembly comprises a fixed plate, the fixed plate is fixedly connected with the inner wall of the heat preservation chamber at both ends, the top end of the transition pipe is fixedly connected with the fixed plate through a connecting plate, a measurement pivot is rotatably installed on the upper end of the fixed plate, one end of the measurement pivot is provided with an angle sensor for measuring the rotation angle of the measurement pivot, a pull rope is wound on the measurement pivot, guide rollers are rotatably installed on both sides of the fixed plate, film winding rollers are arranged on both sides of each transition pipe, an adsorption film paper is wound between the film winding rollers on both sides, the adsorption film paper is sealedly passed through the corresponding transition pipe, and both ends of the pull rope pass through the guide rollers and are fixedly connected with corresponding rotating sleeves.

[0008] As a further scheme of the present application, a through hole matched with the adsorption film paper is arranged through the transition pipe, a flexible air-tight rubber strip is arranged along the edge of the through hole, and the adsorption film paper passes through the flexible air-tight rubber strip from one side of the through hole of the transition pipe and passes out from the other side of the through hole.

[0009] As a further scheme of the present application, the height of the adsorption film paper is greater than the inner diameter of the transition pipe.

[0010] As a further scheme of the present application, a transmission assembly is arranged at the bottom of the heat preservation chamber, the transmission assembly comprises two groups of fixed rotating shafts, each group of the fixed rotating shafts is arranged on both sides of the transition pipe, the upper and lower ends of the fixed rotating shaft are rotatably matched with the heat preservation chamber, the film winding rollers are slidably installed on the corresponding fixed rotating shafts, an outer shell is arranged at the bottom of the measurement pipe, a fan wheel is arranged in the outer shell, the both ends of the fan wheel are rotatably matched with the outer shell through rotating shafts, driving bevel gears are fixedly sleeved with the both ends of the rotating shafts, driven bevel gears are fixedly sleeved with the both sides of the transmission shaft, the driving bevel gears are meshed with the driven bevel gears, and a transmission belt is wound between the transmission shaft and the two groups of fixed rotating shafts.

[0011] As a further scheme of the present application, a limiting protrusion is arranged on the outside of the fixed rotating shaft, a limiting groove is arranged on the inner wall of the film winding roller, and the limiting protrusion is slidably installed in the corresponding limiting groove.

[0012] As a further scheme of the present application, a start-stop valve, a dust remover and a flow regulating valve are sequentially arranged in the air inlet channel along the flow direction of the pyrolysis gas, and a heating jacket is arranged on the outside of the air inlet channel.

[0013] The present application has the following advantages:

[0014] (1) By setting the detection assembly, when measuring, pyrolysis gas enters into the measuring tube through the air inlet channel, and passes through the adsorption film paper in the transition pipe, the tar in the pyrolysis gas will be adsorbed on the adsorption film paper, at the same time, the film winding rollers on both sides will also rotate synchronously, so as to realize the unwinding and winding process of the adsorption film paper, so as to ensure that fresh adsorption film paper is continuously provided for the pyrolysis gas to pass through, greatly improving the adsorption effect of the adsorption film paper on the tar, which is beneficial to improve the measurement accuracy, and the adsorption film paper absorbing the tar will be wound on the film winding roller on the other side, at this time, the film winding rollers on both sides will produce a weight difference, and drive the measuring pivot to rotate reversely through the pull rope, and the angle sensor is used to measure the rotation angle of the measuring pivot at this time, since the adsorption film paper also produces a weight difference after absorbing the tar, the difference between the two rotation angles of the measuring pivot before and after the adsorption film paper absorbs the tar is compared and analyzed, the angle change of the measuring pivot is accurately detected through the potential measurement of the angle sensor, and the weight change of the adsorption film paper is directly fed back, so that the tar content in the pyrolysis gas can be analyzed, and the detection precision is high.

[0015] (2) By setting the transmission assembly, during the measurement process, the pyrolysis gas continuously flows in the measuring tube, the airflow drives the fan wheel to rotate, the fan wheel drives the rotating shaft to rotate, the rotating shaft drives the transmission shaft to rotate through the bevel gear transmission pair at both ends, the transmission shaft drives the two groups of fixed shafts to rotate through the transmission belt, since the limiting protrusions and the limiting grooves are axially slidably connected, the fixed shafts on both sides drive the corresponding film winding rollers to rotate synchronously, so that the automatic unwinding and winding process of the adsorption film paper can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] The application will be further described below with reference to the drawings.

[0017] Figure 1 It is the overall structure schematic diagram of the application.

[0018] Figure 2 It is the internal structure schematic diagram of the application.

[0019] Figure 3 It is the internal structure schematic diagram of the heat preservation chamber in the application.

[0020] Figure 4 It is the structure schematic diagram of the detection assembly in the application.

[0021] Figure 5 It is the structure schematic diagram of the transition pipe in the application.

[0022] Figure 6 It is the structure schematic diagram of the transmission assembly in the application.

[0023] In the figure: 1, detection box; 101, observation window; 102, control panel; 2, air inlet channel; 201, on-off valve; 202, dust remover; 203, heating jacket; 204, flow regulating valve; 3, heat preservation chamber; 4, measuring tube; 5, transition tube; 501, flexible airtight rubber strip; 6, detection assembly; 601, fixing plate; 602, measuring pivot; 603, pull rope; 604, angle sensor; 605, guide roller; 606, film winding roller; 6061, limiting groove; 607, adsorbed film paper; 608, rotating sleeve; 7, transmission assembly; 701, fixed rotating shaft; 7011, limiting protrusion; 702, transmission belt; 703, transmission shaft; 704, driven bevel gear; 705, outer housing; 706, rotating shaft; 707, fan wheel; 708, driving bevel gear. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0025] Please refer to Figure 1 and Figure 2 The present application is a device for measuring tar content in a multi-layer curved plate continuous pyrolysis process, which comprises a detection box 1, an observation window 101 and a control panel 102 arranged on the front end face of the detection box 1, an air inlet channel 2 and a heat preservation chamber 3 arranged inside the detection box 1, an air inlet end of the air inlet channel 2 in communication with the outside, an air outlet end of the air inlet channel 2 in communication with the heat preservation chamber 3, a measuring tube 4 horizontally arranged inside the heat preservation chamber 3, one end of the measuring tube 4 in communication with the air outlet end of the air inlet channel 2, the other end of the measuring tube 4 penetrating through the heat preservation chamber 3 and in communication with an air outlet on the detection box 1, transition tubes 5 arranged on both ends of the measuring tube 4, and a detection assembly 6 arranged on the transition tubes 5.

[0026] Specifically, the multi-layer curved plate is continuously heated in a pyrolysis furnace, and the generated pyrolysis gas is introduced into the air inlet channel 2. The pyrolysis gas enters the measuring tube 4 in the heat preservation chamber 3 from the air inlet channel 2, and the tar content in the pyrolysis gas is detected by the detection assembly 6. In this process, the tester can control the running state of the detection box 1 through the control panel 102, and can observe the detection process in the heat preservation chamber 3 through the transparent observation window 101.

[0027] As Figure 3 and Figure 4As shown, the detection assembly 6 comprises a fixed plate 601, the fixed plate 601 is fixedly connected with the inner wall of the heat preservation chamber 3 at both ends, the top end of the transition pipe 5 is fixedly connected with the fixed plate 601 through a connecting plate, a measurement pivot 602 is rotatably installed on the upper end of the fixed plate 601, an angle sensor 604 is arranged at one end of the measurement pivot 602 to measure the rotation angle of the measurement pivot 602, a pull rope 603 is wound on the measurement pivot 602, a guide roller 605 is rotatably installed on both sides of the fixed plate 601, a film winding roller 606 is arranged on both sides of each transition pipe 5, an adsorption film paper 607 is wound between the film winding rollers 606 on both sides, the adsorption film paper 607 is sealed through from the corresponding transition pipe 5, and a rotating sleeve 608 is rotatably installed on the top end of the film winding roller 606. Both ends of the pull rope 603 pass through the guide roller 605 and are fixedly connected with the corresponding rotating sleeve 608.

[0028] Specifically, by arranging the detection assembly 6, in the initial state, the pyrolysis gas has not been introduced at this time, and the adsorption film paper 607 is wound on one side of the film winding roller 606, so that the weights of the film winding rollers 606 on both sides are inconsistent, and the weight difference will drive the measurement pivot 602 to rotate through the pull rope 603, and the rotation angle of the measurement pivot 602 at this time is measured by using the angle sensor 604. During measurement, the pyrolysis gas enters the measurement pipe 4 through the gas inlet channel 2 and passes through the adsorption film paper 607 in the transition pipe 5, and the tar in the pyrolysis gas is adsorbed on the adsorption film paper 607, and the film winding rollers 606 on both sides also rotate synchronously, so as to realize the unwinding and winding processes of the adsorption film paper 607, so as to continuously provide fresh adsorption film paper 607 for the pyrolysis gas to pass through, greatly improving the adsorption effect of the adsorption film paper 607 on the tar, which is beneficial to improve the measurement accuracy. At the same time, the adsorption film paper 607 that has absorbed the tar will be wound on the film winding roller 606 on the other side, at this time, the film winding rollers 606 on both sides will generate a weight difference, and the measurement pivot will be reversely rotated through the pull rope 603, and the rotation angle of the measurement pivot 602 at this time is measured by using the angle sensor 604. Since the adsorption film paper 607 also generates a weight difference after absorbing the tar, the difference between the two rotation angles of the measurement pivot 602 caused by the weight difference of the adsorption film paper 607 before and after absorbing the tar is compared and analyzed, the angle change of the measurement pivot 602 is accurately detected by the potential measurement of the angle sensor 604, and the weight change of the adsorption film paper 607 is directly fed back, so that the tar content in the pyrolysis gas can be analyzed, and the detection precision is high.

[0029] It should be noted that the transition pipe 5 is arranged at both ends of the measuring pipe 4, and thus two groups of detection assemblies 6 are arranged at both ends of the measuring pipe 4. The detection assembly 6 close to the gas inlet of the measuring pipe 4 is used to realize the measurement process, and the detection assembly 6 close to the gas outlet of the measuring pipe 4 is used as a reference group. The detection process is the same, and the difference between the two rotation angles of the measuring pivot 602 before and after the absorption of tar is used to reflect the tar content. However, the difference is that the detection assembly 6 close to the gas outlet is used to reflect the remaining tar content in the pyrolysis gas to be discharged, that is, to detect whether the tar in the pyrolysis gas is completely absorbed. When the rotation angles of the measuring pivot 602 before and after the absorption of tar are different, it indicates that the tar in the gas detected by the detection assembly 6 is not completely absorbed, and the detection result is not accurate. When the rotation angles of the measuring pivot 602 before and after the absorption of tar are consistent, it indicates that the tar in the gas detected by the detection assembly 6 is completely absorbed, and the detection result is relatively accurate.

[0030] As shown in Figure 5 , the transition pipe 5 is provided with a through hole matched with the adsorption film paper 607. A flexible air-tight rubber strip 501 is arranged along the edge of the through hole. The adsorption film paper 607 passes through the flexible air-tight rubber strip 501 from one side of the through hole of the transition pipe 5 and comes out from the other side of the through hole.

[0031] Specifically, since the adsorption film paper 607 in the embodiment needs to be unwound and wound during the measurement process, that is, the adsorption film paper 607 needs to continuously pass through the transition pipe 5. In order to ensure the air tightness of the adsorption film paper 607 when passing through the transition pipe 5, the flexible air-tight rubber strip 501 is arranged on the edge of the through hole. Under the premise of ensuring that the adsorption film paper 607 can pass through normally, the sealing performance of the adsorption film paper 607 when passing through the transition pipe 5 is effectively improved, so as to avoid the leakage of pyrolysis gas and improve the detection accuracy.

[0032] As shown in Figure 5 , the height of the adsorption film paper 607 is greater than the inner diameter of the transition pipe 5.

[0033] Specifically, when the adsorption film paper 607 passes through the transition pipe 5, the adsorption film paper 607 will completely cover the internal passage of the transition pipe 5. This makes all the gas pass through the adsorption of the adsorption film paper 607 when the pyrolysis gas flows in the transition pipe 5, which is beneficial to improve the adsorption effect.

[0034] It should be noted that the adsorption film paper 607 in the present example can adopt any one of a glass fiber filter membrane, a graphitized fiber composite filter membrane or a ceramic membrane, wherein the glass fiber filter membrane has good adhesion performance, a smooth surface and good adsorption effect on tar; the graphitized fiber composite filter membrane has better adsorption effect on tar and also has longer service life; the ceramic membrane has excellent filtration effect on tar and can achieve accurate measurement. When selecting the adsorption film paper 607, a comprehensive evaluation can be made according to actual application conditions, detection accuracy and cost-effectiveness and the like.

[0035] As shown in Figure 4 and Figure 6 , the bottom of the heat preservation chamber 3 is provided with a transmission assembly 7, the transmission assembly 7 includes two groups of fixed rotating shafts 701, each group of fixed rotating shafts 701 is arranged on the two sides of the transition pipe 5, the upper and lower ends of the fixed rotating shaft 701 are rotationally matched with the heat preservation chamber 3, the membrane roller 606 is slidably installed on the corresponding fixed rotating shaft 701, the bottom center of the measuring pipe 4 is provided with an outer shell 705, the inner part of the outer shell 705 is provided with a fan wheel 707, the two ends of the fan wheel 707 are rotationally matched with the outer shell 705 through a rotating shaft 706, the rotating shaft 706 is fixedly sleeved with a driving bevel gear 708 at both ends, the outer shell 705 is provided with a transmission shaft 703 at both sides, the transmission shaft 703 is fixedly sleeved with a driven bevel gear 704 at the top end, the driving bevel gear 708 is meshed with the driven bevel gear 704, and the transmission belt 702 is wound between the transmission shaft 703 and the two groups of fixed rotating shafts 701.

[0036] As shown in Figure 6 , the outer side of the fixed rotating shaft 701 is provided with a limiting protrusion 7011, and the inner wall of the membrane roller 606 is provided with a limiting groove 6061, and the limiting protrusion 7011 is slidably installed in the corresponding limiting groove 6061.

[0037] Specifically, by arranging the transmission assembly 7, during the measurement process, the pyrolysis gas continuously flows in the measuring pipe 4, the airflow drives the fan wheel 707 to rotate, the fan wheel 707 drives the rotating shaft 706 to rotate, the rotating shaft 706 drives the transmission shaft 703 to rotate through the bevel gear transmission pair at both ends, the transmission shaft 703 drives the two groups of fixed rotating shafts 701 to rotate through the transmission belt 702, and since the limiting protrusion 7011 and the limiting groove 6061 are axially slidably matched, the two sides of the fixed rotating shaft 701 drive the corresponding membrane roller 606 to rotate synchronously, so that the automatic unwinding and winding process of the adsorption film paper 607 can be realized.

[0038] As shown in Figure 2 , the inlet cavity 2 is sequentially provided with an on-off valve 201, a dust remover 202 and a flow regulating valve 204 along the flow direction of the pyrolysis gas, and the inlet cavity 2 is provided with a heating jacket 203 outside.

[0039] Specifically, the opening and closing valve 201 is used to control the air intake state of the air intake channel 2, the dust collector 202 is used to adsorb the smoke dust particle impurities in the pyrolysis gas, the flow regulating valve 204 is used to adjust and control the flow size of the pyrolysis gas, and the heating jacket 203 is used to heat and keep warm the air intake channel 2 to ensure that the pyrolysis gas maintains the pyrolysis temperature.

[0040] The working principle of the present application is as follows: Figures 1-6 As shown in the figure, in the initial state, the pyrolysis gas has not been introduced at this time, the adsorption membrane paper 607 is wound on one of the winding membrane rollers 606, so that the two winding membrane rollers 606 are not consistent in weight, and the weight difference will drive the measuring pivot 602 to rotate through the pull rope 603, and the angle sensor 604 is used to measure the rotation angle of the measuring pivot 602 at this time. During the measurement, the pyrolysis gas enters the measuring pipe 4 through the air intake channel 2, and passes through the adsorption membrane paper 607 in the transition pipe 5, and the tar in the pyrolysis gas will be adsorbed on the adsorption membrane paper 607. The pyrolysis gas continues to flow in the measuring pipe 4, and the airflow will drive the fan wheel 707 to rotate, and the fan wheel 707 will drive the rotating shaft 706 to rotate, and the rotating shaft 706 will drive the transmission shaft 703 to rotate through the bevel gear transmission pair at both ends, and the transmission shaft 703 will drive the two groups of fixed rotating shafts 701 to rotate through the transmission belt 702. Since the limiting protrusions 7011 and the limiting recesses 6061 are axially slidingly connected, the two fixed rotating shafts 701 will drive the corresponding winding membrane rollers 606 to rotate synchronously, so that the automatic unwinding and winding process of the adsorption membrane paper 607 can be realized, so as to ensure that fresh adsorption membrane paper 607 is continuously provided for the pyrolysis gas to pass through, greatly improving the absorption effect of the adsorption membrane paper 607 on the tar, and being conducive to improving the measurement accuracy. At the same time, the adsorption membrane paper 607 that has absorbed the tar will be wound on the winding membrane roller 606 on the other side, at this time the two winding membrane rollers 606 will produce a weight difference, and the measuring pivot will be driven to rotate in the opposite direction through the pull rope 603, and the angle sensor 604 is used to measure the rotation angle of the measuring pivot 602 at this time. Since the adsorption membrane paper 607 also has a weight difference after absorbing the tar, the difference between the two rotation angles of the measuring pivot 602 caused by the weight difference of the adsorption membrane paper 607 before and after absorbing the tar is compared and analyzed, and the angle sensor 604 is used to accurately detect the angle change of the measuring pivot 602, and the weight change of the adsorption membrane paper 607 is directly fed back, so that the tar content in the pyrolysis gas can be analyzed, and the detection accuracy is high.

[0041] The above describes one embodiment of the present application in detail, but the above description is only a preferred embodiment of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made within the scope of the present application should still belong to the patent scope of the present application.

Claims

1. A device for measuring tar content during continuous pyrolysis of multi-layer curved plates, comprising a detection box (1), wherein the front end face of the detection box (1) is provided with an observation window (101) and a control board (102), characterized in that, The detection box (1) is provided with an air inlet channel (2) and an insulation chamber (3). The air inlet end of the air inlet channel (2) is connected to the outside, and the air outlet end of the air inlet channel (2) is connected to the insulation chamber (3). A measuring tube (4) is horizontally arranged inside the insulation chamber (3). One end of the measuring tube (4) is connected to the air outlet end of the air inlet channel (2), and the other end of the measuring tube (4) passes through the insulation chamber (3) and is connected to the air outlet on the detection box (1). Transition tubes (5) are respectively provided at both ends of the measuring tube (4). Both ends of each transition tube (5) are connected to the measuring tube (4). A detection component (6) is provided on the transition tube (5). The detection component (6) includes a fixing plate (601), both ends of which are fixedly connected to the inner wall of the insulation chamber (3). The top end of the transition tube (5) is fixedly connected to the fixing plate (601) via a connecting plate. A measuring pivot (602) is rotatably mounted on the upper end of the fixing plate (601). An angle sensor (604) is provided at one end of the measuring pivot (602) to measure the rotation angle of the measuring pivot (602). A pull rope (603) is wound around the measuring pivot (602). Guide rollers (605) are rotatably mounted on both sides of the fixed plate (601). Each transition tube (5) is provided with a film winding roller (606) on both sides. An absorbent film paper (607) is wound between the film winding rollers (606) on both sides. The absorbent film paper (607) passes through the corresponding transition tube (5) in a sealed manner. A rotating sleeve (608) is rotatably mounted on the top of the film winding roller (606). The two ends of the pull rope (603) pass around the guide roller (605) and are fixedly connected to the corresponding rotating sleeve (608).

2. The device for measuring tar content during continuous pyrolysis of a multi-layer curved plate according to claim 1, characterized in that, The transition tube (5) is provided with an opening adapted to the adsorption membrane paper (607), and a flexible airtight adhesive strip (501) is provided along the edge of the opening. The adsorption membrane paper (607) passes through the flexible airtight adhesive strip (501) from one side of the transition tube (5) and exits from the other side of the opening.

3. The tar content measuring device in the continuous pyrolysis process of a multi-layer curved plate according to claim 1, characterized in that, The height of the adsorption membrane paper (607) is greater than the inner diameter of the transition tube (5).

4. The tar content measuring device in the continuous pyrolysis process of a multi-layer curved plate according to claim 1, characterized in that, A transmission assembly (7) is provided at the bottom of the insulation chamber (3). The transmission assembly (7) includes two sets of fixed rotating shafts (701). Each set of fixed rotating shafts (701) is located on both sides of the transition tube (5). The upper and lower ends of the fixed rotating shafts (701) are rotatably engaged with the insulation chamber (3). The film winding roller (606) is slidably mounted on the corresponding fixed rotating shaft (701). A housing (705) extends from the center of the bottom of the measuring tube (4). A fan impeller (707) is provided inside the housing (705). The impeller (707) is rotatably engaged with the outer casing (705) at both ends via a rotating shaft (706). A drive bevel gear (708) is fixedly sleeved at both ends of the rotating shaft (706). A transmission shaft (703) is provided on both sides of the outer casing (705). A driven bevel gear (704) is fixedly sleeved at the top end of the transmission shaft (703). The drive bevel gear (708) meshes with the driven bevel gear (704). A transmission belt (702) is wound between the transmission shaft (703) and the two sets of fixed rotating shafts (701).

5. The tar content measuring device in the continuous pyrolysis process of a multi-layer curved plate according to claim 4, characterized in that, The fixed rotating shaft (701) is provided with a limiting protrusion (7011) on the outside, and the film winding roller (606) is provided with a limiting groove (6061) on the inner wall. The limiting protrusion (7011) is adapted to slide in the corresponding limiting groove (6061).

6. A device for measuring tar content during continuous pyrolysis of a multi-layer curved plate according to any one of claims 1-5, characterized in that, The air inlet chamber (2) is provided with an on / off valve (201), a dust collector (202) and a flow regulating valve (204) in sequence along the flow direction of the pyrolysis gas. A heating jacket (203) is provided on the outside of the air inlet chamber (2).

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