Carbonization line high-low temperature furnace waste gas treatment device special for carbon fibers

Abstract

The invention provides a special carbonization line high-low temperature furnace waste gas treatment device for carbon fibers, which comprises a treatment tank filled with treatment liquid, the top of the treatment tank is conical, a plurality of groups of treatment components are arranged in the treatment tank, and a gas collecting component is arranged at the conical end of the treatment tank; the treatment assembly comprises a rotating rod a rotationally arranged on the treatment tank, and a connecting rod is mounted on the rotating rod a. A rotary driving part a drives a chain wheel a to rotate, a chain a drives a rotating rod a to rotate, a connecting rod is driven to rotate, a liquid spraying head is driven to rotate upwards, treatment liquid is discharged into a liquid inlet pipe, the treatment liquid is sprayed out through the liquid spraying head, mixed gas of oxygen and waste gas makes full contact with the treatment liquid, and the waste gas treatment effect is enhanced; the exhaust groove is sealed by the baffle plate a to prevent waste gas from overflowing from the exhaust groove during waste gas treatment, and the air bag is inflated and expanded to increase the pressure in the blocking cover so as to accelerate the reaction rate among the waste gas, oxygen and the treatment liquid.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, and in particular to a waste gas treatment device of a high and low temperature furnace of a carbonization line dedicated to carbon fiber. Background Art

[0002] In the process of manufacturing polyacrylonitrile (PAN)-based carbon fibers, the structure undergoes two major changes from organic precursor to inorganic carbon fibers. The first is the pre-oxidation process, which transforms the linear molecular chains of PAN into pre-oxidized fibers with a heat-resistant ladder-shaped structure. The second is the carbonization process, which transforms the ladder-shaped structure of the pre-oxidized fibers into the turbostratic graphite structure of carbon fibers.

[0003] The first structural transformation is carried out in the air at 200-280°C. The PAN linear molecular chain is combined with 8%-10% oxygen by pre-oxidation, so that the linear molecular chain is transformed into a heat-resistant ladder structure, which can withstand high-temperature carbonization and maintain the fiber shape. It is carried out in a low-temperature carbonization furnace; the second transformation is carried out under the protection of inert gas at 300-1800°C. The ladder structure is pyrolyzed to make non-carbon atoms escape and undergo a condensation reaction to generate a chaotic layer graphite structure or a graphite structure, and finally an inorganic carbon fiber with a carbon content of more than 92% is generated. It is carried out in a high-temperature carbonization furnace.

[0004] The Chinese public document "Carbonization Furnace - Key Equipment for Producing Carbon Fiber" discloses that the thermal decomposition products in the low-temperature zone are HCN, NH3, H2O, CO, CO2, and tar; the thermal decomposition products in the high-temperature zone are HCN, NH3, N2, H2O, CO, and CO2. The HCN and NH3 in the exhaust gas produced by high and low temperature furnaces are extremely toxic, so they must be treated before discharge.

[0005] Most of the existing high and low temperature furnace waste gas treatment devices are to set the treatment liquid inside the tank, pass the waste gas into the treatment liquid, stir the treatment liquid through the stirring device, and then treat the waste gas. However, due to the low density of HCN and NH3, HCN and NH3 are located at the top of the waste gas in the tank, and thus have limited contact with the treatment liquid, resulting in poor waste gas treatment effect. Summary of the invention

[0006] The purpose of the present invention is to address the deficiencies in the prior art and provide a waste gas treatment device for a high and low temperature furnace of a carbonization line specially used for carbon fiber. The device drives a sprocket a to rotate through a rotating driving member a, drives a rotating rod a to rotate through a chain a, drives a connecting rod to rotate, drives a liquid spray head to rotate upward, and discharges a treatment liquid into a liquid inlet pipe. The treatment liquid is sprayed out through the liquid spray head, so that the oxygen and waste gas mixed gas are in full contact with the treatment liquid, thereby enhancing the waste gas treatment effect; the baffle a closes the exhaust groove to prevent the waste gas from overflowing from the exhaust groove when the waste gas is treated, and the airbag is inflated to increase the pressure in the blocking cover to accelerate the reaction rate between the waste gas, oxygen and the treatment liquid.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A high and low temperature furnace waste gas treatment device dedicated to carbon fiber carbonization line, comprising a treatment tank filled with treatment liquid, the top of the treatment tank is conical, multiple groups of treatment components are arranged in the treatment tank, and a gas collection component is arranged on the conical end of the treatment tank;

[0009] Preferably, the treatment assembly comprises a rotating rod a rotatably arranged on the treatment tank, a connecting rod is mounted on the rotating rod a, a plurality of groups of liquid spray heads for spraying the treatment liquid are mounted on one side of the connecting rod, and a plurality of groups of spray heads for spraying waste gas or oxygen are mounted on the other side of the connecting rod;

[0010] Furthermore, a blocking cover is rotatably provided on the outer side of the connecting rod, a mounting groove and an exhaust groove are provided in the blocking cover, a shielding plate a is rotatably provided in the mounting groove, an airbag is installed in the shielding plate a, and the shielding plate a is rotatably provided to shield the exhaust groove. The airbag is inflated to increase the pressure in the blocking cover to accelerate the reaction rate.

[0011] Preferably, a sprocket a is installed on the rotating rod a, a rotating driving member a is installed on the processing tank, a sprocket a is installed on the output end of the rotating driving member a, a plurality of groups of sprockets a are sleeved on the outside with chains a, and the rotating driving member a drives the rotating rod a to rotate;

[0012] Further, a fixing sleeve b is installed at one end of the blocking cover, a sprocket b is installed on the fixing sleeve b, a rotating driving member b is installed on the processing tank, a sprocket b is installed at the output end of the rotating driving member b, multiple groups of chains b are sleeved on the outer side of the sprocket b, and the rotating driving member b drives the blocking cover to rotate;

[0013] Preferably, a fixed sleeve c is installed on one side of the baffle a, a sprocket c is installed on the fixed sleeve c, a rotating driving member c is installed on the processing tank, a sprocket c is installed on the output end of the rotating driving member c, multiple groups of chains c are installed on the outer side of the sprocket c, and the rotating driving member c drives the baffle a to rotate.

[0014] Further, the gas collection assembly includes a round-shaped block a installed on the conical end of the processing tank, a round-shaped block b is slidably provided in the round-shaped block a, a shielding plate b is slidably provided in the round-shaped block b, a gas delivery pipe is installed on the shielding plate b, and the gas delivery pipe is located on the top of the shielding plate b;

[0015] A slide groove a is provided in the circular block a, and the circular block b slides in the slide groove a. A slide groove b is provided in the circular block b, and the shielding plate b slides in the slide groove b.

[0016] Preferably, the present invention further comprises a tar removal component, which removes tar gas from the exhaust gas.

[0017] Furthermore, the tar removal assembly includes a square pipe, a circular cover is provided on the square pipe, a rotating block is rotatably provided in the circular cover, tar absorption parts are provided at both ends of the rotating block, and two groups of tar absorption parts cool, liquefy, adsorb and remove tar gas in the exhaust gas introduced into the square pipe in turn, an injection assembly is provided on the top of the circular cover, and a collection box is provided at the bottom of the circular cover;

[0018] Preferably, the tar absorption part includes a U-shaped plate, which is installed on the rotating block, and vertical plates are installed on both sides of the U-shaped plate, and support rods are installed at both ends of the vertical plates, and the ends of the support rods are curved. A winding unit and an unwinding unit are provided on the vertical plate, and the winding unit and the unwinding unit are provided with oil-absorbing cloth, an avoidance groove a is opened in the vertical plate, and an avoidance groove b is opened in the support rod; the oil-absorbing cloth slides in the avoidance groove a and the avoidance groove b.

[0019] Furthermore, a linear driving member a is installed on the U-shaped plate, a sleeve is installed at the output end of the linear driving member a, a rotating rod b is rotatably arranged inside the sleeve, and a guide rod is installed on the rotating rod b.

[0020] Preferably, a U-shaped rod is installed on the rotating rod b, a gear a is installed at one end of the rotating rod b, a support frame is installed on the U-shaped plate, a rotating driving member d is installed on the support frame, a gear b is installed at the output end of the rotating driving member d, and the gear a is meshed with the gear b.

[0021] Furthermore, a linear driving member c is installed on the U-shaped plate, an arc-shaped extrusion plate is installed on the output end of the linear driving member c, and a closing plate is installed on the side of the vertical plate.

[0022] Preferably, the winding unit comprises a fixing frame a, a rotating driving member e is mounted on the fixing frame a, a winding shaft is mounted on the output end of the rotating driving member e, and one end of the oil absorbent cloth is wound on the winding shaft.

[0023] Further, the unwinding unit includes a fixed frame b, a rotating driving member f is installed on the fixed frame b, an unwinding shaft is installed at the output end of the rotating driving member f, and the other end of the oil absorbent cloth is rolled up on the unwinding shaft;

[0024] Guide ropes are provided on both sides of the oil absorbent cloth. The guide ropes slide in the avoidance groove b. One end of the guide rope is wound on the winding shaft, and the other end of the guide rope is wound on the unwinding shaft. The length of the guide rope is longer than the length of the oil absorbent cloth.

[0025] The beneficial effects of the present invention are:

[0026] (1) The present invention drives the sprocket a to rotate through the rotating driving member a, drives the rotating rod a to rotate through the chain a, drives the connecting rod to rotate, drives the liquid spray head to rotate upward, and discharges the treatment liquid into the liquid inlet pipe. The treatment liquid is sprayed out through the liquid spray head, so that the oxygen and waste gas mixed gas are fully in contact with the treatment liquid, thereby enhancing the waste gas treatment effect; the baffle plate a closes the exhaust groove to prevent the waste gas from overflowing from the exhaust groove when treating the waste gas, and the air bag is inflated to increase the pressure in the blocking cover to accelerate the reaction rate between the waste gas, oxygen and the treatment liquid.

[0027] (2) In the present invention, the gas discharged from the exhaust groove is collected in the gas collection component on the conical end of the processing tank, and the gas is filled into the slide groove a, driving the round block b and the baffle plate b to extend upward, and the gas is located at the top of the gas collection component; since the density of HCN and NH3 is relatively small, the residual HCN and NH3 are located at the top of the gas, and the gas transmission pipe draws out the top HCN and NH3, and sprays them into the blocking cover through the inlet pipe and the nozzle for further processing, thereby performing targeted processing on the residual HCN and NH3, thereby enhancing the processing effect.

[0028] (3) In the present invention, the waste gas is introduced into the square pipe from bottom to top, and the waste gas passes through the wet oil-absorbing cloth. The wet oil-absorbing cloth first cools the tar gas in the waste gas, and the tar gas is cooled and liquefied and adheres to the oil-absorbing cloth. The oil-absorbing cloth can be 2 layers or 4 layers to enhance the removal effect of the tar gas in the waste gas.

[0029] (4) The present invention discharges cleaning liquid into the water pipe, and the water nozzle sprays the cleaning liquid to clean the oil absorbent cloth. At the same time, the reeling unit and the unreeling unit reel and unreel the oil absorbent cloth, and move the oil absorbent cloth, so that the entire oil absorbent cloth can be cleaned.

[0030] (5) The present invention drives the gear b to rotate by rotating the driving member d, thereby driving the gear a, the rotating rod b, and the guide rod to rotate, driving the guide rod to roll up and tighten the oil absorbent cloth, squeezing out a portion of the cleaning liquid on the oil absorbent cloth, and at the same time, the linear driving member c drives the arc-shaped extrusion plate to clamp and squeeze the oil absorbent cloth rolled up on the guide rod. The oil absorbent cloth remains moist after being squeezed, which is convenient for the subsequent cooling of the tar gas, so that the tar gas is liquefied and adheres to the oil absorbent cloth. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the structure of the present invention from a first angle;

[0032] Figure 2 It is a schematic diagram of the structure from a second angle of the present invention;

[0033] Figure 3 For the present invention Figure 1 The enlarged schematic diagram of point A in the middle;

[0034] Figure 4 This is a schematic diagram of the structure of the processing component of the present invention;

[0035] Figure 5 This is a schematic diagram of the explosion structure of the processing assembly of the present invention;

[0036] Figure 6 This is a schematic diagram of the cross-sectional structure of the processing tank of the present invention;

[0037] Figure 7 A schematic diagram of a first state of operation of the processing component of the present invention;

[0038] Figure 8 A schematic diagram of a second state of operation of the processing component of the present invention;

[0039] Fig. 9 A schematic diagram of a third state of operation of the processing component of the present invention;

[0040] Fig.10 A schematic diagram of a fourth state of operation of the processing component of the present invention;

[0041] Fig.11 This is a schematic diagram of the first state of the gas gathering component of the present invention;

[0042] Fig.12 This is a schematic diagram of the second state of the gas gathering component of the present invention;

[0043] Fig.13 This is a schematic diagram of the structure of the tar removal component of the present invention;

[0044] Fig.14 is a schematic cross-sectional view of a tar removal assembly of the present invention;

[0045] Fig.15 This is a schematic diagram of the structure of the rotating block and the tar absorption part of the present invention;

[0046] Fig.16 This is a schematic diagram of the structure of the tar absorption part of the present invention;

[0047] Fig.17 For the present invention Fig.16 The enlarged schematic diagram of the center C;

[0048] Fig.18 This is a schematic diagram of the structure of the U-shaped rod and the guide rod of the present invention;

[0049] Fig.19 It is a first cross-sectional schematic diagram of the tar absorption part of the present invention;

[0050] Fig. 20 It is a second cross-sectional schematic diagram of the tar absorption part of the present invention;

[0051] Fig.21It is a schematic diagram of the structure of the oil-absorbing cloth and the guide rope of the present invention.

[0052] Reference numerals

[0053] 1. Processing tank; 2. Processing assembly; 201. Inlet pipe; 202. Liquid inlet pipe; 21. Rotating rod a; 211. Sprocket a; 212. Rotating drive member a; 213. Chain a; 22. Connecting rod; 23. Liquid spray head; 24. Spray head; 25. Blocking cover; 251. Mounting groove; 252. Exhaust groove; 253. Fixed sleeve b; 254. Sprocket b; 255. Rotating drive member b; 256. Chain b; 26. Blocking cover baffle a; 261, fixed sleeve c; 262, sprocket c; 263, rotating drive member c; 264, chain c; 27, air bag; 3, gas collection assembly; 31, round block a; 311, slide a; 32, round block b; 321, slide b; 33, baffle b; 34, gas pipe; 4, tar removal assembly; 41, square pipe; 42, round cover; 43, rotating block; 431, rotating drive member g; 44, tar suction Rewinding unit; 440, oil-absorbing cloth; 4401, guide rope; 441, U-shaped plate; 442, vertical plate; 4421, avoidance groove a; 443, support rod; 4431, avoidance groove b; 444, rewinding unit; 4441, fixed frame a; 4442, rotating drive member e; 4443, rewinding shaft; 445, unwinding unit; 4451, fixed frame b; 4452, rotating drive member f; 4453, unwinding shaft; 446, straight line Driving member a; 447, collar; 448, rotating rod b; 449, guide rod; 450, U-shaped rod; 451, gear a; 452, support frame; 453, rotating driving member d; 454, gear b; 455, linear driving member c; 456, arc-shaped extrusion plate; 457, closing plate; 4571, sliding groove; 46, injection assembly; 461, protective cover; 462, water nozzle; 463, water pipe; 47, collecting box. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0057] Embodiment 1

[0058] like Figure 1 and Figure 2 As shown, this embodiment provides a high and low temperature furnace waste gas treatment device dedicated to carbon fiber carbonization line, including a treatment tank 1 filled with treatment liquid, the top of the treatment tank 1 is conical, a plurality of treatment components 2 are arranged in the treatment tank 1, and a gas collection component 3 is arranged on the conical end of the treatment tank 1;

[0059] Further, such as Figure 4 and Figure 5 As shown, the treatment assembly 2 includes a rotating rod a21 rotatably arranged on the treatment tank 1, a connecting rod 22 is installed on the rotating rod a21, a plurality of groups of liquid spray heads 23 for spraying the treatment liquid are installed on one side of the connecting rod 22, and a plurality of groups of spray heads 24 for spraying waste gas or oxygen are installed on the other side of the connecting rod 22;

[0060] Preferably, Figure 4 and Figure 5 As shown, a blocking cover 25 is rotatably provided on the outer side of the connecting rod 22, a mounting groove 251 and an exhaust groove 252 are provided in the blocking cover 25, a shielding plate a26 is rotatably provided in the mounting groove 251, an airbag 27 is installed in the shielding plate a26, the shielding plate a26 is rotatably provided to shield the exhaust groove 252, and the airbag 27 is inflated to increase the pressure in the blocking cover 25 to accelerate the reaction rate.

[0061] Further, such as Figure 1-Figure 6As shown, a sprocket a211 is installed on the rotating rod a21, a rotating driving member a212 is installed on the processing tank 1, a sprocket a211 is installed on the output end of the rotating driving member a212, and chains a213 are sleeved on the outer sides of multiple groups of sprockets a211. The rotating driving member a212 drives the rotating rod a21 to rotate;

[0062] A fixing sleeve b253 is installed at one end of the blocking cover 25, a sprocket b254 is installed on the fixing sleeve b253, a rotating driving member b255 is installed on the processing tank 1, a sprocket b254 is installed on the output end of the rotating driving member b255, and chains b256 are installed on the outer sides of multiple groups of sprockets b254. The rotating driving member b255 drives the blocking cover 25 to rotate;

[0063] A fixed sleeve c261 is installed on one side of the baffle a26, a sprocket c262 is installed on the fixed sleeve c261, a rotating driving member c263 is installed on the processing tank 1, a sprocket c262 is installed on the output end of the rotating driving member c263, chains c264 are installed on the outer side of multiple groups of sprockets c262, and the rotating driving member c263 drives the baffle a26 to rotate.

[0064] The gas collection assembly 3 includes a round block a31 installed on the conical end of the processing tank 1, a round block b32 is slidably provided in the round block a31, a shielding plate b33 is slidably provided in the round block b32, a gas pipe 34 is installed on the shielding plate b33, and the gas pipe 34 is connected to the jet head 24; the gas pipe 34 is located on the top of the shielding plate b33;

[0065] A slide groove a311 is provided in the circular block a31, and the circular block b32 slides in the slide groove a311. A slide groove b321 is provided in the circular block b32, and the shielding plate b33 slides in the slide groove b321. When high-pressure gas is introduced into the slide groove a311, the circular block b32 and the shielding plate b33 can be driven to move upward (the state is as shown in FIG. Fig.12 Similarly, the gas in the chute a311 is extracted to drive the circular block b32 and the shielding plate b33 to move downward (the state is as shown in Fig.11 shown);

[0066] In this embodiment, the initial state is as follows Figure 7 As shown, the exhaust slot 252 of the blocking cover 25 is located at the bottom, oxygen is first discharged into the inlet pipe 201, the oxygen is ejected through the nozzle 24, the oxygen enters the blocking cover 25, and then the exhaust gas is discharged into the inlet pipe 201, the exhaust gas is ejected through the nozzle 24, and the exhaust gas enters the blocking cover 25. At this time, the mixed gas of oxygen and exhaust gas is located at the top of the blocking cover 25;

[0067] The rotating driving member c263 drives the sprocket c262 to rotate, and drives the shielding plate a26 to rotate to the bottom of the blocking cover 25 through the chain c264, and the shielding plate a26 closes the exhaust groove 252; the airbag 27 is inflated;

[0068] In this embodiment, the rotary drive member a212 drives the sprocket a211 to rotate, and drives the rotating rod a21 to rotate through the chain a213, driving the connecting rod 22 to rotate, driving the liquid spray head 23 to rotate upward (its state is as shown in FIG. Fig. 9 As shown), the treatment liquid is discharged into the liquid inlet pipe 202, and the treatment liquid is sprayed out through the liquid spray head 23, so that the oxygen and waste gas mixed gas are fully in contact with the treatment liquid, thereby enhancing the waste gas treatment effect;

[0069] It should be noted that the shielding plate a26 seals the exhaust groove 252 to prevent the exhaust gas from overflowing from the exhaust groove 252 when the exhaust gas is treated, and the air bag 27 is inflated to increase the pressure in the blocking cover 25 to accelerate the reaction rate between the exhaust gas, oxygen and the treatment liquid;

[0070] The oxidant hydrogen peroxide (hydrogen peroxide), catalyst and acidity regulator are prepared into a treatment liquid. HCN and NH3 are oxidized by the treatment liquid and oxygen to generate CO2 and N2. The main chemical reactions between hydrogen peroxide and HCN and NH3 are as follows:

[0071] 2HCN+H2O2+2O2=2CO2+N2+2H2O; 2NH3+1.5O2=N2+3H2O;

[0072] The catalyst is copper sulfate, cobalt sulfate or ferrous sulfate, and the acidity regulator is sodium carbonate or sodium silicate.

[0073] Embodiment 2

[0074] like Fig.13 As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that:

[0075] like Fig.13 and Fig.14 As shown, this embodiment also includes a tar removal component 4, which removes tar gas from the exhaust gas. It can be seen from the public document "Key Equipment for Producing Carbon Fibers - Carbonization Furnace" that there is still tar in the exhaust gas, so before the treatment liquid treats the exhaust gas, the tar needs to be removed first;

[0076] Further, such as Fig.14 and Fig.15 As shown, the tar removal assembly 4 includes a square pipe 41, a circular cover 42 is provided on the square pipe 41, a rotating block 43 is rotatably provided in the circular cover 42, tar absorption parts 44 are provided at both ends of the rotating block 43, and a rotating driving member g431 is installed in the circular cover 42 to drive the rotating block 43 to rotate; the two groups of tar absorption parts 44 cool, liquefy, absorb and remove the tar gas in the exhaust gas entering the square pipe 41 in turn;

[0077] Further, such as Figure 15-18 As shown, the tar absorbing part 44 includes a U-shaped plate 441, which is installed on the rotating block 43. Vertical plates 442 are installed on both sides of the U-shaped plate 441. Support rods 443 are installed at both ends of the vertical plates 442. The ends of the support rods 443 are curved. A winding unit 444 and an unwinding unit 445 are provided on the vertical plate 442. The winding unit 444 and the unwinding unit 445 are provided with an oil-absorbing cloth 440. An avoidance groove a4421 is opened in the vertical plate 442, and an avoidance groove b4431 is opened in the support rod 443; the oil-absorbing cloth 440 slides in the avoidance groove a4421 and the avoidance groove b4431.

[0078] Preferably, Figure 15-18 As shown, a linear driving member a446 is installed on the U-shaped plate 441, a collar 447 is installed on the output end of the linear driving member a446, a rotating rod b448 is rotatably arranged in the collar 447, and a guide rod 449 is installed on the rotating rod b448; a U-shaped rod 450 is installed on the rotating rod b448, and a gear a451 is installed at one end of the rotating rod b448; a support frame 452 is installed on the U-shaped plate 441, and a rotating driving member d453 is installed on the support frame 452 , a gear b454 is installed at the output end of the rotating driving member d453, and the gear a451 is meshed with the gear b454; a linear driving member c455 is installed on the U-shaped plate 441, and an arc-shaped extrusion plate 456 is installed at the output end of the linear driving member c455, and a closing plate 457 is installed on the side of the vertical plate 442; a sliding groove 4571 is opened on the closing plate 457, and the rotating rod b448 slides in the sliding groove 4571, and the closing plate 457 plays a sealing role;

[0079] A spray assembly 46 is provided on the top of the circular cover 42, and a collecting box 47 is provided on the bottom of the circular cover 42. The spray assembly 46 includes a protective cover 461 installed on the circular cover 42, and a plurality of water spray nozzles 462 are installed in the protective cover 461. A water pipe 463 is installed on the protective cover 461.

[0080] Further, such as Figure 15-18As shown, the reeling unit 444 includes a fixed frame a4441, on which a rotating driving member e4442 is mounted, and a reeling shaft 4443 is mounted at the output end of the rotating driving member e4442, and one end of the oil-absorbing cloth 440 is reeled on the reeling shaft 4443; the unreeling unit 445 includes a fixed frame b4451, on which a rotating driving member f4452 is mounted, and the output end of the rotating driving member f4452 is mounted on the unreeling shaft 4453, and the other end of the oil-absorbing cloth 440 is reeled on the reeling shaft 4443. The oil absorbent cloth 440 is wound on the unwinding shaft 4453. Guide ropes 4401 are provided on both sides of the oil absorbent cloth 440. The guide ropes 4401 slide in the avoidance groove b4431. It should be noted that during the movement of the guide rope 4401 and the oil absorbent cloth 440, the guide rope 4401 does not leave the avoidance groove b4431. One end of the guide rope 4401 is wound on the winding shaft 4443, and the other end of the guide rope 4401 is wound on the unwinding shaft 4453. The length of the guide rope 4401 is longer than that of the oil absorbent cloth 440.

[0081] In this embodiment, in the initial state, Fig.14 As shown, a group of tar absorbing parts 44 are located inside the square pipe 41, and the state of the oil absorbing cloth 440 is as follows: Fig. 20 As shown;

[0082] The exhaust gas is passed into the square pipe 41 from bottom to top, and the exhaust gas passes through the wet oil-absorbing cloth 440. The wet oil-absorbing cloth 440 first cools the tar gas in the exhaust gas, and the tar gas is cooled and liquefied and adheres to the oil-absorbing cloth 440. Fig.19 and Fig. 20 As shown, the oil-absorbing cloth 440 can be 2 layers or can be changed to 4 layers to enhance the removal effect of tar gas in the exhaust gas;

[0083] In this embodiment, when the oil-absorbing cloth 440 on one group of tar absorbing parts 44 absorbs more tar, the rotating driving member g431 drives the rotating block 43 to rotate, driving the two groups of tar absorbing parts 44 to rotate 180 degrees, so that the other group of tar absorbing parts 44 absorbs the tar gas;

[0084] The cleaning liquid is discharged into the water pipe 463, and the water nozzle 462 sprays the cleaning liquid to clean the oil absorbent cloth 440. At the same time, the reeling unit 444 and the unreeling unit 445 reel and unreel the oil absorbent cloth 440, and the oil absorbent cloth 440 is moved to clean the entire oil absorbent cloth 440;

[0085] The rotating driving member d453 drives the gear b454 to rotate, driving the gear a451, the rotating rod b448, and the guide rod 449 to rotate, driving the guide rod 449 to roll up and tighten the oil-absorbing cloth 440, squeezing out a part of the cleaning liquid on the oil-absorbing cloth 440, and at the same time, the linear driving member c455 drives the arc-shaped squeezing plate 456 to clamp and squeeze the oil-absorbing cloth 440 rolled up on the guide rod 449, and the waste liquid after cleaning flows into the collection box 47;

[0086] It should be noted that the oil-absorbing cloth 440 remains wet after being squeezed out, which is convenient for subsequent cooling of the tar gas so that the tar gas is liquefied and adheres to the oil-absorbing cloth 440 .

[0087] Exhaust gas treatment working principle:

[0088] Step 1: Ventilation process: Initial state is as follows Figure 7 As shown, the exhaust slot 252 of the blocking cover 25 is located at the bottom, oxygen is first discharged into the inlet pipe 201, the oxygen is ejected through the nozzle 24, the oxygen enters the blocking cover 25, and then the exhaust gas is discharged into the inlet pipe 201, the exhaust gas is ejected through the nozzle 24, and the exhaust gas enters the blocking cover 25. At this time, the mixed gas of oxygen and exhaust gas is located at the top of the blocking cover 25;

[0089] Step 2, closing process: the rotating driving member c263 drives the sprocket c262 to rotate, and drives the shielding plate a26 to rotate to the bottom of the blocking cover 25 through the chain c264, and the shielding plate a26 closes the exhaust groove 252;

[0090] Step 3: Pressurization process: The airbag 27 is inflated to increase the pressure in the blocking cover 25 to accelerate the reaction rate between the exhaust gas, oxygen and the treatment liquid (the state is as follows Fig. 9 shown);

[0091] Step 4, processing steps; the rotating drive member a212 drives the sprocket a211 to rotate, drives the rotating rod a21 to rotate through the chain a213, drives the connecting rod 22 to rotate, drives the liquid spray head 23 to rotate upward (its state is as shown Fig. 9 As shown), the treatment liquid is discharged into the liquid inlet pipe 202, and the treatment liquid is sprayed out through the liquid spray head 23, so that the oxygen and waste gas mixed gas are fully in contact with the treatment liquid, thereby enhancing the waste gas treatment effect;

[0092] It should be noted that the shielding plate a26 seals the exhaust groove 252 to prevent the exhaust gas from overflowing from the exhaust groove 252 when the exhaust gas is treated, and the air bag 27 is inflated to increase the pressure in the blocking cover 25 to accelerate the reaction rate between the exhaust gas, oxygen and the treatment liquid;

[0093] Step 5, exhaust process: the rotating driving member b255 drives the sprocket b254 to rotate, drives the fixed sleeve b253 to rotate through the chain b256, drives the driving blocking cover 25 to rotate, and makes the exhaust groove 252 rotate upward, and the treated exhaust gas is discharged upward through the exhaust groove 252;

[0094] Step 6: Gas collection and reprocessing process: The gas discharged through the exhaust groove 252 is collected in the gas collection component 3 on the conical end of the processing tank 1. The initial state is as follows: Fig.11 As shown, gas is charged into the slide groove a311, driving the circular block b32 and the shielding plate b33 to extend upward (the state is as shown in FIG. Fig.12 As shown), the gas is located at the top of the gas collection component 3; since the density of HCN and NH3 is relatively small, the residual HCN and NH3 are located at the top of the gas ( Fig.12 At point E in the figure), the gas delivery pipe 34 extracts the top HCN and NH3, and sprays them into the blocking cover 25 through the inlet pipe 201 and the nozzle 24 (oxygen is discharged at the same time), and is processed again, thereby specifically treating the residual HCN and NH3, thereby enhancing the treatment effect.

[0095] Tar Removal Process:

[0096] Step 1: Tar removal process: In the initial state, such as Fig.14 As shown, a group of tar absorbing parts 44 are located inside the square pipe 41, and the state of the oil absorbing cloth 440 is as follows: Fig. 20 As shown;

[0097] The exhaust gas is passed into the square pipe 41 from bottom to top, and the exhaust gas passes through the wet oil-absorbing cloth 440. The wet oil-absorbing cloth 440 first cools the tar gas in the exhaust gas, and the tar gas is cooled and liquefied and adheres to the oil-absorbing cloth 440. Fig.19 and Fig. 20 As shown, the oil-absorbing cloth 440 can be 2 layers or can be changed to 4 layers to enhance the removal effect of tar gas in the exhaust gas;

[0098] Step 2, switching process: when the oil-absorbing cloth 440 on one set of tar absorbing parts 44 absorbs more tar, the rotating driving member g431 drives the rotating block 43 to rotate, driving the two sets of tar absorbing parts 44 to rotate 180 degrees, so that the other set of tar absorbing parts 44 absorbs tar gas;

[0099] Step 3, water spray cleaning process: the cleaning liquid is discharged into the water delivery pipe 463, and the water spray nozzle 462 sprays the cleaning liquid to clean the oil absorbent cloth 440, and at the same time, the reeling unit 444 and the unreeling unit 445 reel and unreel the oil absorbent cloth 440, and then the oil absorbent cloth 440 is moved, and then the entire oil absorbent cloth 440 is cleaned; the cleaning liquid flows into the collection box 47;

[0100] Step 4: Squeezing process: The oil-absorbing cloth 440 passes through the gap between the guide rod 449 and the U-shaped rod 450;

[0101] The rotating driving member d453 drives the gear b454 to rotate, driving the gear a451, the rotating rod b448, and the guide rod 449 to rotate, driving the guide rod 449 to reel in and tighten the oil-absorbing cloth 440, squeezing out a portion of the cleaning liquid on the oil-absorbing cloth 440, and at the same time the linear driving member c455 drives the arc-shaped extrusion plate 456 to clamp and extrude the oil-absorbing cloth 440 reeled on the guide rod 449.

[0102] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high and low temperature furnace exhaust gas treatment device dedicated to carbon fiber carbonization line, characterized in that: It comprises a treatment tank (1) filled with treatment liquid, the top of the treatment tank (1) is conical, a plurality of treatment components (2) are arranged in the treatment tank (1), and a gas collecting component (3) is arranged on the conical end of the treatment tank (1); The treatment assembly (2) comprises a rotating rod a (21) rotatably arranged on the treatment tank (1), a connecting rod (22) located in the treatment tank (1) being mounted on the rotating rod a (21), a plurality of groups of liquid spray heads (23) for spraying treatment liquid being mounted on one side of the connecting rod (22), and a plurality of groups of spray heads (24) for spraying waste gas or oxygen being mounted on the other side of the connecting rod (22); A blocking cover (25) is rotatably provided on the outer side of the connecting rod (22), a mounting groove (251) and an exhaust groove (252) are provided in the blocking cover (25), a shielding plate a (26) is rotatably provided in the mounting groove (251), an air bag (27) is installed in the shielding plate a (26), the shielding plate a (26) is rotatably provided to shield the exhaust groove (252), and the air bag (27) is inflated to increase the pressure in the blocking cover (25) to accelerate the reaction rate.

2. The exhaust gas treatment device of a high and low temperature furnace of a carbonization line dedicated to carbon fiber according to claim 1 is characterized in that: The rotating rod a (21) is provided with a sprocket a (211), the processing tank (1) is provided with a rotating driving member a (212), the output end of the rotating driving member a (212) is provided with a sprocket a (211), a plurality of groups of the sprockets a (211) are provided with chains a (213) on the outside, and the rotating driving member a (212) drives the rotating rod a (21) to rotate; A fixing sleeve b (253) is installed at one end of the blocking cover (25), a sprocket b (254) is installed on the fixing sleeve b (253), a rotating driving member b (255) is installed on the processing tank (1), a sprocket b (254) is installed at the output end of the rotating driving member b (255), a plurality of groups of chains b (256) are sleeved on the outer side of the sprocket b (254), and the rotating driving member b (255) drives the blocking cover (25) to rotate; A fixing sleeve c (261) is installed on one side of the shielding plate a (26), a sprocket c (262) is installed on the fixing sleeve c (261), a rotating driving member c (263) is installed on the processing tank (1), a sprocket c (262) is installed on the output end of the rotating driving member c (263), multiple groups of chains c (264) are sleeved on the outer side of the sprocket c (262), and the rotating driving member c (263) drives the shielding plate a (26) to rotate.

3. The exhaust gas treatment device of a high and low temperature furnace of a carbonization line dedicated to carbon fiber according to claim 2 is characterized in that: The gas collecting assembly (3) comprises a circular block a (31) mounted on the conical end of the processing tank (1), a circular block b (32) is slidably arranged inside the circular block a (31), a shielding plate b (33) is slidably arranged inside the circular block b (32), and a gas delivery pipe (34) is installed on the top of the shielding plate b (33); The circular block a (31) is provided with a slide groove a (311), the circular block b (32) slides in the slide groove a (311), the circular block b (32) is provided with a slide groove b (321), and the shielding plate b (33) slides in the slide groove b (321).

4. The exhaust gas treatment device of a high and low temperature furnace of a carbonization line dedicated to carbon fiber according to claim 3 is characterized in that: It also includes a tar removal component (4), which cools, liquefies, adsorbs and removes tar gas in the exhaust gas; The tar removal assembly (4) comprises a square pipe (41), a circular cover (42) is provided on the square pipe (41), a rotating block (43) is rotatably provided in the circular cover (42), tar absorption parts (44) are provided at both ends of the rotating block (43), and two groups of the tar absorption parts (44) cool, liquefy, adsorb and remove tar gas in the waste gas introduced into the square pipe (41) in turn, a spray assembly (46) is provided on the top of the circular cover (42), and a collection box (47) is provided at the bottom of the circular cover (42).

5. The exhaust gas treatment device of a high and low temperature furnace of a carbonization line dedicated to carbon fiber according to claim 4 is characterized in that: The tar absorption part (44) comprises a U-shaped plate (441), the U-shaped plate (441) is mounted on the rotating block (43), vertical plates (442) are mounted on both sides of the U-shaped plate (441), support rods (443) are mounted on both ends of the vertical plates (442), the ends of the support rods (443) are bent, and a winding unit (444) and an unwinding unit (445) are provided on the vertical plates (442); The reeling unit (444) and the unreeling unit (445) are reeled with an oil-absorbing cloth (440); an escape groove a (4421) is provided in the vertical plate (442); and an escape groove b (4431) is provided in the support rod (443); the oil-absorbing cloth (440) slides in the escape groove a (4421) and the escape groove b (4431).

6. The exhaust gas treatment device of a high and low temperature furnace of a carbonization line dedicated to carbon fiber according to claim 5 is characterized in that: A linear drive member a (446) is installed on the U-shaped plate (441), a collar (447) is installed on the output end of the linear drive member a (446), a rotating rod b (448) is rotatably arranged inside the collar (447), and a guide rod (449) is installed on the rotating rod b (448).

7. The exhaust gas treatment device of a high and low temperature furnace of a carbonization line dedicated to carbon fiber according to claim 6 is characterized in that: A U-shaped rod (450) is mounted on the rotating rod b (448), the oil absorbent cloth (440) passes through a gap between the guide rod (449) and the U-shaped rod (450), a gear a (451) is mounted on one end of the rotating rod b (448), a support frame (452) is mounted on the U-shaped plate (441), a rotating driving member d (453) is mounted on the support frame (452), a gear b (454) is mounted on the output end of the rotating driving member d (453), and the gear a (451) is meshed with the gear b (454).

8. The exhaust gas treatment device of a high and low temperature furnace of a carbonization line dedicated to carbon fiber according to claim 7 is characterized in that: A linear drive member c (455) is installed on the U-shaped plate (441), an arc-shaped extrusion plate (456) is installed at the output end of the linear drive member c (455), and a closing plate (457) is installed on the side of the vertical plate (442).

9. The exhaust gas treatment device of a high and low temperature furnace of a carbonization line dedicated to carbon fiber according to claim 8 is characterized in that: The winding unit (444) comprises a fixed frame a (4441), a rotating driving member e (4442) is mounted on the fixed frame a (4441), a winding shaft (4443) is mounted on the output end of the rotating driving member e (4442), and one end of the oil absorbent cloth (440) is wound on the winding shaft (4443).

10. The exhaust gas treatment device of a high and low temperature furnace of a carbonization line dedicated to carbon fiber according to claim 9, characterized in that: The unwinding unit (445) comprises a fixed frame b (4451), a rotating driving member f (4452) is mounted on the fixed frame b (4451), an unwinding shaft (4453) is mounted on the output end of the rotating driving member f (4452), and the other end of the oil absorbent cloth (440) is rolled up on the unwinding shaft (4453); Guide ropes (4401) are provided on both sides of the oil absorbent cloth (440), and the guide ropes (4401) slide in the avoidance groove b (4431). One end of the guide rope (4401) is rolled up on the winding shaft (4443), and the other end of the guide rope (4401) is rolled up on the unwinding shaft (4453). The length of the guide rope (4401) is longer than the length of the oil absorbent cloth (440).

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