Waste gas treatment device and method for producing impregnated paper

Abstract

The present application relates to the technical field of waste gas separation equipment, and specifically discloses a waste gas treatment device and treatment method for gummed paper production, which includes a filter box, a condensation box, an activated carbon adsorption box and an absorption tank installed on the top surface of a substrate, a first pipe is connected to one side of the filter box, a second pipe is connected to the other side of the filter box, and the second pipe is connected to one side of the condensation box, and the filter box is used for filtering solid particles in the waste gas; a third pipe is connected to the top of the condensation box, and the third pipe is connected to one side of the activated carbon adsorption box, and the other side of the activated carbon adsorption box is connected to a fourth pipe; a side of the activated carbon adsorption box close to the fourth pipe is connected to a fifth pipe, and the fifth pipe is used for hot air to enter, and a side of the activated carbon adsorption box close to the third pipe is connected to a sixth pipe, and the sixth pipe is connected to the absorption tank; a seventh pipe is connected to the top of the absorption tank, and the seventh pipe is connected to the circumference of the second pipe. The present application has the effect of improving the economic benefits of waste gas treatment.

Description

Technical Field

[0001] The present invention relates to the technical field of waste gas separation equipment, and in particular to a waste gas treatment device and a treatment method for gummed paper production. Background Art

[0002] In the actual production of impregnated paper, glue, solvents and other chemicals are used, which are easy to volatilize harmful waste gases during the processing. Some common waste gases include volatile organic compounds (VOCs) produced by the evaporation of organic solvents and glue volatiles. These waste gases may have a negative impact on the environment and human health.

[0003] A common method for treating the above waste gas is to directly burn the volatile organic compounds (VOCs) in the waste gas and the volatiles in the glue to produce carbon dioxide and water for discharge; this method can reduce the emission of waste gas, but the economic benefits of directly burning a large amount of volatile organic compounds are low. Summary of the invention

[0004] In order to improve the economic benefits of waste gas treatment, the present application provides a waste gas treatment device and method for gummed paper production.

[0005] In the first aspect, the present application provides a device for treating waste gas from the production of impregnated paper using the following technical solution:

[0006] A device for treating waste gas from the production of impregnated paper comprises a filter box, a condensation box, an activated carbon adsorption box and an absorption tank installed on the top surface of a substrate, wherein one side of the filter box is connected to one end of a first pipe, the other end of the first pipe is used for blowing in waste gas, the other side of the filter box is connected to one end of a second pipe, the other end of the second pipe is connected to one side of the condensation box, and the filter box is used for filtering solid particulate matter in the waste gas; one end of a third pipe is connected to the top of the condensation box, one end of the third pipe is connected to one side of the activated carbon adsorption box, and the other side of the activated carbon adsorption box is connected to a fourth pipe; one side of the activated carbon adsorption box close to the fourth pipe is connected to one end of a fifth pipe, the other end of the fifth pipe is used for hot air to enter, one side of the activated carbon adsorption box close to the third pipe is connected to one end of a sixth pipe, the other end of the sixth pipe is connected to the absorption tank, and the absorption tank has cold water; one end of a seventh pipe is connected to the top of the absorption tank, and the other end of the seventh pipe is connected to the circumference of the second pipe.

[0007] Optionally, an activated carbon adsorption box includes a box body, a sliding plate and an activated carbon plate. The box body is installed on the top surface of the base plate, the sliding plate slides in the box body, two through mounting grooves are provided in the sliding plate, two activated carbon plates are provided, and the two activated carbon plates are respectively installed on the inner walls of the two mounting grooves; the interior of the box body is divided into three chambers from one end to the other, the middle chamber is the adsorption chamber, and the chambers at both ends are desorption chambers; one of the mounting grooves is aligned with the adsorption chamber, and the other mounting groove is aligned with one of the desorption chambers; the third pipe end and the fourth pipe end are connected to the adsorption chamber, and the fifth pipe and the sixth pipe are connected to the two desorption chambers; a driving mechanism for driving the sliding plate to reciprocate is installed at the end of the box body.

[0008] Optionally, both sides of the box body are connected to the first gas collecting hood, the two first gas collecting hoods are aligned with the adsorption chamber, the end of the third pipe is connected to the first gas collecting hood close to the condensation box, and the end of the fourth pipe is connected to the first gas collecting hood far away from the condensation box; both sides of the box body are connected to the two second gas collecting hoods, the two second gas collecting hoods are respectively at the two ends of the box body, and the two second gas collecting hoods are respectively aligned with the two desorption chambers; an eighth pipe is arranged on the side of the box body close to the condensation box, the two ends of the eighth pipe are respectively connected to the two second gas collecting hoods close to the condensation box, the third pipe is connected to the middle position of the eighth pipe, the eighth pipe is connected to two first solenoid valves, and the two first solenoid valves are located on both sides of the third pipe; a ninth pipe is arranged on the side of the box body away from the condensation box, the two ends of the ninth pipe are respectively connected to the two second gas collecting hoods far away from the condensation box, the end of the fourth pipe is connected to the ninth pipe, and the ninth pipe is connected to two second solenoid valves, and the two second solenoid valves are located on both sides of the fourth pipe.

[0009] Optionally, both side surfaces of the sliding plate are rotatably connected with four rotating rods, the four rotating rods are respectively located at four corners of the sliding plate, and the inner wall of the box body is provided with rolling grooves for the rotating rods on both sides of the box body to roll.

[0010] Optionally, a sealing groove is arranged around the mounting groove on the side of the sliding plate, a sealing plate is arranged in the sealing groove, the sealing plate slides on the inner wall of the sealing groove, four slides are passed through the sliding plate, the four slides are arranged along the length direction of the sliding plate, two of the slides are located on one side of the sliding plate and are arranged up and down, the other two slides are located on the other side of the sliding plate and are arranged up and down, the slide is located between the sealing plates on both sides, a plurality of wedge blocks are connected to the side of the slide close to the sealing plate, a plurality of pushing blocks are arranged on the side of the sealing plate close to the slide, the pushing blocks are provided with grooves matching the wedge blocks, and one end of the slide extends out of the end of the sliding plate; a pushing mechanism for pushing the slide is provided at the end of the box.

[0011] Optionally, the driving mechanism includes a pushing cylinder, a connecting plate and a pushing rod, the pushing cylinder is installed on the top surface of the box body, one end of the connecting plate is connected to the end of the piston rod of the pushing cylinder, the end of the pushing rod is connected to the bottom end of the connecting rod, and the other end of the pushing rod penetrates into the box body and the end is installed on the end surface of the sliding plate.

[0012] Optionally, a sleeve is connected to the end of the sliding plate near the push rod, the end of the sleeve is closed, the end of the push rod is inserted into the sleeve, and a push ring is connected to the circumferential surface of the push rod, the push ring is located in the sleeve, and two springs are arranged in the sleeve, the two springs are both sleeved on the end of the push rod, the push ring is located between the two springs, the two springs are pressed against the side surfaces of the push rings, one end of the spring is pressed against the end surface of the sliding plate, and the other end of the spring is pressed against the end surface of the sleeve; two limit plates are connected to the inner wall of the box, the two limit plates are vertically arranged, and the end surface of the sliding plate is fitted against the side surfaces of the limit plates.

[0013] Optionally, the pushing mechanism includes a pushing frame, a push rod, a push plate, a first retaining ring, a second retaining ring and a protective tube; the pushing frame is connected to the ends of the four slides, and the pushing frame is sleeved outside the sleeve; four push rods are provided, and the four push rods are all connected to the side of the push frame; the four push rods are evenly distributed around the circumference of the sleeve, one side of the push plate is connected to the ends of the four push rods, the push rod passes through the push plate, and a movable opening for the push plate, the push rod and the sleeve to pass through is provided at the end of the box body; the first retaining ring and the second retaining ring are both connected to the circumferential surface of the push rod, and the first retaining ring and the second retaining ring are respectively located on both sides of the push plate; the protective tube is connected to the end face of the box body, the push rod passes through the protective tube and the pushing mechanism is located in the protective tube.

[0014] Optionally, the waste gas treatment device also includes a distillation tower installed on the top surface of the substrate, and the bottom of the distillation tower stores the organic compound solution to be distilled and separated; a first spiral heat exchange tube is arranged at the bottom of the distillation tower, the top of the first spiral heat exchange tube passes through the distillation tower and is connected to the end of the sixth pipeline, the bottom end of the first spiral heat exchange tube passes through the distillation tower and enters from the top of the absorption tube, and the bottom end of the first spiral heat exchange tube extends below the liquid level of the absorption tank.

[0015] In the second aspect, the present application provides a method for treating waste gas from the production of impregnated paper using the following technical solution:

[0016] A method for treating waste gas from the production of impregnated paper, comprising the following steps:

[0017] S1. The exhaust gas is introduced from the first pipe, and the exhaust gas passes through the filter box, the second pipe, the condensation box, the third pipe, the adsorption chamber and the activated carbon plate in sequence;

[0018] S2. The first water pump pumps the organic compound solution at the bottom of the liquid collecting bin into the distillation tower through the second spiral heat exchange tube;

[0019] S3. The mixed organic compound solution at the bottom of the distillation tower is distilled and separated to obtain a monomer organic compound;

[0020] S4. When the adsorption amount of the activated carbon plate reaches the standard, the driving mechanism drives the sliding plate to move to the other end of the box, so that the activated carbon plate originally located in the adsorption chamber moves to the desorption chamber at one end, and the activated carbon plate originally located in the desorption chamber moves to the adsorption chamber;

[0021] S5. A hot air flow is introduced into the fifth pipe, and the hot air flow desorbs the activated carbon adsorption plate in the desorption chamber, so that the desorbed exhaust gas passes through the sixth pipe and the first spiral heat exchange tube into the cold water in the absorption tank.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. The waste gas generated by the production of dipped paper is discharged into the first pipe, and the waste gas enters the filter box through the first pipe. The filter box filters the solid particles in the waste gas, and the filtered waste gas enters the condensation box. The condensation box cools and liquefies the volatile organic compounds in the waste gas, so that the liquefied organic matter falls to the bottom of the condensation box, and the volatile organic compounds in the waste gas are collected; the waste gas that is not condensed by the condensation box enters the activated carbon adsorption box through the third pipe, and the activated carbon in the activated carbon adsorption box absorbs the volatile organic compounds in the waste gas, and then the clean air is discharged to the outside from the fourth pipe, and the volatile organic compounds in the waste gas are absorbed. Attached, then hot air passes through the fifth pipe, the hot air enters the activated carbon adsorption box, the activated carbon in the activated carbon adsorption box is heated, so that the volatile organic compounds on the activated carbon are desorbed, and the desorbed volatile organic compounds flow into the absorption tank through the sixth pipe, and the cold water in the absorption tank absorbs the volatile organic compounds. The volatile organic compounds that are not absorbed flow into the second pipe through the seventh pipe, and then flow back to the condensation box, and then condense and liquefy, absorb the volatile organic compounds in the exhaust gas, and turn them into volatile organic compound solutions, collect and utilize the volatile organic compounds, and improve the economic benefits of exhaust gas treatment;

[0024] 2. When it is necessary to ensure the sealing of the installation groove and the inner wall of the box, the push assembly drives the slide plate to slide in the sliding plate, the slide plate drives the wedge block, the wedge block pushes the push block through the inclined surface, the push block pushes the square sealing plate, the square sealing plate slides out of the sealing groove, so that the square sealing plate is pressed against the inner wall of the box to avoid airflow cross-flow between the adsorption chamber and the desorption chamber;

[0025] 3. When the sliding plate is pulled by the push rod, the push rod drives the push ring to compress the spring away from the sliding plate, and the spring pushes the end of the sleeve, and the sleeve drives the sliding plate to slide. When the sliding plate contacts the limit plate at the end of the box, the push ring continues to compress the spring, which has a buffering effect on the push rod; when the sliding plate is pushed by the push rod again, the push rod drives the push ring to compress the spring close to the sliding plate, and the spring pushes the sliding plate to slide. When the sliding plate contacts the inner wall of the end of the box, the push ring continues to compress the spring, which has a buffering effect on the push rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the structure of the exhaust gas treatment device according to an embodiment of the present application;

[0027] Figure 2 It is a schematic diagram of the structure of the filter box of the embodiment of the present application;

[0028] Figure 3 It is a schematic diagram of the structure of the condensation box of the embodiment of the present application;

[0029] Figure 4 It is a schematic diagram of the structure of the absorption tank and the distillation tower of the embodiment of the present application;

[0030] Figure 5 This is a schematic diagram of the structure of the activated carbon adsorption box of the embodiment of the present application;

[0031] Figure 6 It is a schematic diagram of the cross-sectional structure of the activated carbon adsorption box of the embodiment of the present application;

[0032] Figure 7 yes Figure 6 A schematic diagram of the enlarged structure of part A;

[0033] Figure 8 is a schematic diagram of the cross-sectional structure of the sliding plate of an embodiment of the present application;

[0034] Fig. 9 yes Figure 8 Schematic diagram of the enlarged structure of part B.

[0035] Description of reference numerals:

[0036] 01, first pipeline; 02, second pipeline; 03, third pipeline; 04, fourth pipeline; 05, fifth pipeline; 06, sixth pipeline; 07, seventh pipeline; 08, eighth pipeline; 081, first solenoid valve; 09, ninth pipeline; 091, second solenoid valve; 1, substrate; 11, filter box; 111, ceramic filter plate; 12, condenser box; 121, baffle plate; 122, condenser tube; 123, refrigerator; 124, liquid collecting tank; 13, absorption tank; 131, second spiral heat exchange tube; 132, first water pump; 133, first water pipe; 134, second water pump; 135, second water pipe; 136, third water pump; 14, distillation tower; 141, first spiral heat exchange tube; 2, activated carbon adsorption box; 21, box body; 211, adsorption chamber; 212, desorption chamber; 213, first gas collecting hood; 214, second gas collecting hood; 215, rolling groove; 216, limit plate; 217, movable opening; 22, sliding plate; 221, mounting groove; 222, rotating rod; 223, sealing groove; 224, sealing plate; 225, slide plate; 226, wedge block; 227, push block; 2271, groove; 23, activated carbon plate; 3, driving mechanism; 31, pushing cylinder; 32, connecting plate; 33, pushing rod; 331, pushing ring; 34, sleeve; 35, spring; 4, pushing mechanism; 41, pushing frame; 42, push rod; 43, push plate; 44, first retaining ring; 45, second retaining ring; 46, protective tube. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-9 This application is described in further detail.

[0038] The present application discloses a device and method for treating waste gas from the production of impregnated paper. Figure 1-9 The exhaust gas treatment device includes a filter box 11, a condensation box 12, an activated carbon adsorption box 2 and an absorption tank 13 installed on the top surface of the substrate 1. One side of the filter box 11 is connected to one end of a first pipe 01, and the other end of the first pipe 01 is used for blowing in the exhaust gas. The other side of the filter box 11 is connected to one end of a second pipe 02, and the other end of the second pipe 02 is connected to one side of the condensation box 12. The filter box 11 is used for filtering solid particles in the exhaust gas; the top of the condensation box 12 is connected to one end of a third pipe 03, and one end of the third pipe 03 is connected to the activated carbon adsorption tank 13. One side of the auxiliary box 2 and the other side of the activated carbon adsorption box 2 are connected to the fourth pipe 04; one side of the activated carbon adsorption box 2 close to the fourth pipe 04 is connected to one end of the fifth pipe 05, and the other end of the fifth pipe 05 is used for hot air to enter; one side of the activated carbon adsorption box 2 close to the third pipe 03 is connected to one end of the sixth pipe 06, and the other end of the sixth pipe 06 is connected to the absorption tank 13, and there is cold water in the absorption tank 13; one end of the seventh pipe 07 is connected to the top of the absorption tank 13, and the other end of the seventh pipe 07 is connected to the circumference of the second pipe 02.

[0039] The waste gas generated by the production of dipped paper is discharged into the first pipe 01, and the waste gas enters the filter box 11 through the first pipe 01. The filter box 11 filters the solid particles in the waste gas, and the filtered waste gas enters the condensation box 12. The condensation box 12 cools and liquefies the volatile organic compounds in the waste gas, so that the liquefied organic matter falls to the bottom of the condensation box 12, and the volatile organic compounds in the waste gas are collected; the waste gas that is not condensed by the condensation box 12 enters the activated carbon adsorption box 2 through the third pipe 03, and the activated carbon in the activated carbon adsorption box 2 absorbs the volatile organic compounds in the waste gas, and then the clean air is discharged to the outside from the fourth pipe 04, and the volatile organic compounds in the waste gas are removed. The volatile organic compounds are adsorbed and then passed through the fifth pipe 05 by hot air. The hot air enters the activated carbon adsorption box 2. The activated carbon in the activated carbon adsorption box 2 is heated to desorb the volatile organic compounds on the activated carbon. The desorbed volatile organic compounds flow to the absorption tank 13 through the sixth pipe 06. The cold water in the absorption tank 13 absorbs the volatile organic compounds. The volatile organic compounds that are not absorbed flow into the second pipe 02 through the seventh pipe 07, and then flow back to the condensation box 12 for condensation and liquefaction. The volatile organic compounds in the exhaust gas are absorbed and converted into a volatile organic compound solution. The volatile organic compounds are collected and utilized, which can improve the economic benefits of exhaust gas treatment.

[0040] The activated carbon adsorption box 2 includes a box body 21, a sliding plate 22 and an activated carbon plate 23. The box body 21 is installed on the top surface of the substrate 1, and the sliding plate 22 slides in the box body 21. Two through mounting grooves 221 are arranged in the sliding plate 22, and two activated carbon plates 23 are arranged. The two activated carbon plates 23 are respectively installed on the inner walls of the two mounting grooves 221; the interior of the box body 21 is divided into three chambers from one end to the other end, the middle chamber is the adsorption chamber 211, and the chambers at both ends are desorption chambers 212; one of the mounting grooves 221 is aligned with the adsorption chamber 211, and the other mounting groove 221 is aligned with one of the desorption chambers 212; the end of the third pipe 03 and the end of the fourth pipe 04 are connected to the adsorption chamber 211, and the fifth pipe 05 and the sixth pipe 06 are connected to the two desorption chambers 212; a driving mechanism 3 for driving the sliding plate 22 to reciprocate is installed at the end of the box body 21.

[0041] The third pipe 03 passes the exhaust gas into the adsorption chamber 211, and the exhaust gas enters the installation groove 221. The activated carbon plate 23 absorbs the volatile organic compounds in the exhaust gas, and the absorbed exhaust gas is discharged through the fourth pipe 04; the driving mechanism 3 drives the sliding plate 22 to move, so that the sliding plate 22 moves from one end of the box body 21 to the other end of the box body 21, and the activated carbon plate 23 originally located in the adsorption chamber 211 moves to the desorption chamber 212 at one end, and the activated carbon plate 23 originally located in the desorption chamber 212 moves to the adsorption chamber 211; the fifth pipe 05 passes hot air, and the hot air enters the desorption chamber 212, so that the volatile organic compounds on the activated carbon plate 23 in the installation groove 221 are desorbed and enter the sixth pipe 06, and the concentrated exhaust gas in the sixth pipe 06 enters the absorption tank 13 again, and the cold water absorbs the volatile organic compounds in the absorption tank 13.

[0042] Both sides of the box body 21 are connected to the first gas collecting hood 213, the two first gas collecting hoods 213 are aligned with the adsorption chamber 211, the end of the third pipe 03 is connected to the first gas collecting hood 213 close to the condensation box 12, and the end of the fourth pipe 04 is connected to the first gas collecting hood 213 far away from the condensation box 12; both sides of the box body 21 are connected to two second gas collecting hoods 214, the two second gas collecting hoods 214 are respectively at the two ends of the box body 21, and the two second gas collecting hoods 214 are respectively aligned with the two desorption chambers 212; the side of the box body 21 close to the condensation box 12 is provided with an eighth pipe 08, and the two ends of the eighth pipe 08 are respectively connected to The two second air collecting hoods 214 are close to the condensation box 12, and the third pipeline 03 is connected to the middle position of the eighth pipeline 08. The eighth pipeline 08 is connected to two first solenoid valves 081, and the two first solenoid valves 081 are located on both sides of the third pipeline 03; a ninth pipeline 09 is arranged on the side of the box body 21 away from the condensation box 12, and the two ends of the ninth pipeline 09 are respectively connected to the two second air collecting hoods 214 away from the condensation box 12, and the end of the fourth pipeline 04 is connected to the ninth pipeline 09, and the ninth pipeline 09 is connected to two second solenoid valves 091, and the two second solenoid valves 091 are located on both sides of the fourth pipeline 04.

[0043] When hot air is introduced into the fifth pipe 05, the first solenoid valve 081 and the second solenoid valve 091 connected to the activated carbon plate 23 are opened, so that the hot air enters the desorption chamber 212 containing the activated carbon plate 23 through the ninth pipe 09, and then flows from the eighth pipe 08 to the sixth pipe 06; when the sliding plate 22 moves to the other end of the box body 21, the first solenoid valve 081 and the second solenoid valve 091 that were originally opened are closed, and then the first solenoid valve 081 and the second solenoid valve 091 are opened again to realize the connection of the other desorption chamber 212.

[0044] Both sides of the sliding plate 22 are rotatably connected with four rotating rods 222, and the four rotating rods 222 are respectively located at the four corners of the sliding plate 22. The inner wall of the box body 21 is provided with rolling grooves 215 for the rotating rods 222 on both sides of the box body 21 to roll; when the sliding plate 22 slides, the rolling rods roll in the rolling grooves 215, which can reduce the friction of the sliding plate 22 sliding in the box body 21.

[0045] A sealing groove 223 arranged around the mounting groove 221 is arranged on the side of the sliding plate 22. The sealing groove 223 is square. A square sealing plate 224 is arranged in the sealing groove 223. The square sealing plate 224 slides on the inner wall of the sealing groove 223. Four slide plates 225 are inserted in the sliding plate 22. The four slide plates 225 are arranged along the length direction of the sliding plate 22. Two slide plates 225 are located on one side of the sliding plate 22 and are arranged up and down. The other two slide plates 225 are located on the other side of the sliding plate 22 and are arranged up and down. The slide plate 225 is located between the square sealing plates 224 on both sides. A plurality of wedge blocks 226 are connected to the side of the slide plate 225 near the square sealing plate 224. A plurality of pushing blocks 227 are arranged on the side of the square sealing plate 224 near the slide plate 225. The pushing blocks 227 are provided with grooves 2271 that cooperate with the wedge blocks 226. One end of the slide plate 225 extends out of the end of the sliding plate 22. A pushing mechanism 4 for pushing the slide plate 225 is provided at the end of the box body 21.

[0046] When it is necessary to ensure the sealing of the installation groove 221 and the inner wall of the box body 21, the pushing component drives the slide plate 225 to slide in the sliding plate 22, and the slide plate 225 drives the wedge block 226. The wedge block 226 pushes the pushing block 227 through the inclined surface, and the pushing block 227 pushes the square sealing plate 224. The square sealing plate 224 slides out of the sealing groove 223, so that the square sealing plate 224 is pressed against the inner wall of the box body 21 to avoid air flow cross-flow between the adsorption chamber 211 and the desorption chamber 212.

[0047] The driving mechanism 3 includes a pushing cylinder 31, a connecting plate 32 and a pushing rod 33. The pushing cylinder 31 is installed on the top surface of the box body 21. One end of the connecting plate 32 is connected to the end of the piston rod of the pushing cylinder 31. The end of the pushing rod 33 is connected to the bottom end of the connecting rod. The other end of the pushing rod 33 penetrates into the box body 21 and the end is installed on the end surface of the sliding plate 22.

[0048] When the sliding plate 22 needs to be driven to move, the push cylinder 31 drives the piston rod to extend and retract, the piston rod drives the connecting plate 32, the connecting plate 32 drives the push rod 33 to move, and the push rod 33 can drive the sliding plate 22 to slide.

[0049] The end of the sliding plate 22 close to the pushing rod 33 is connected with a sleeve 34, the end of the sleeve 34 is closed, the end of the pushing rod 33 is inserted into the sleeve 34, the circumference of the pushing rod 33 is connected with a pushing ring 331, the pushing ring 331 is located in the sleeve 34, two springs 35 are arranged in the sleeve 34, the two springs 35 are both sleeved on the ends of the pushing rod 33, the pushing ring 331 is located between the two springs 35, the two springs 35 are pressed against the side surfaces of the pushing ring 331, one end of the spring 35 is pressed against the end surface of the sliding plate 22, and the other end of the spring 35 is pressed against the end surface of the sleeve 34; the inner wall of the box body 21 is connected with two limit plates 216, the two limit plates 216 are vertically arranged, and the end surface of the sliding plate 22 is fitted against the side surfaces of the limit plates 216.

[0050] When the sliding plate 22 is pulled by the push rod 33, the push rod 33 drives the push ring 331 to compress the spring 35 away from the sliding plate 22, and the spring 35 pushes the end of the sleeve 34, and the sleeve 34 drives the sliding plate 22 to slide. When the sliding plate 22 contacts the limit plate 216 at the end of the box body 21, the push ring 331 continues to compress the spring 35, which has a buffering effect on the push rod 33; when the sliding plate 22 is pushed by the push rod 33 again, the push rod 33 drives the push ring 331 to compress the spring 35 close to the sliding plate 22, and the spring 35 pushes the sliding plate 22 to slide. When the sliding plate 22 contacts the inner wall of the end of the box body 21, the push ring 331 continues to compress the spring 35, which has a buffering effect on the push rod 33.

[0051] The pushing mechanism 4 includes a pushing frame 41, a pushing rod 42, a pushing plate 43, a first retaining ring 44, a second retaining ring 45 and a protective tube 46. The pushing frame 41 is connected to the ends of the four slides 225, and the pushing frame 41 is sleeved outside the sleeve 34; there are four pushing rods 42, and the four pushing rods 42 are all connected to the side of the pushing frame 41. The four pushing rods 42 are evenly distributed around the circumference of the sleeve 34, and one side of the pushing plate 43 is connected to the ends of the four pushing rods 42. The pushing rod 33 passes through the pushing plate 43, and a movable opening 217 for the pushing plate 43, the pushing rod 42 and the sleeve 34 to pass through is provided at the end of the box body 21; the first retaining ring 44 and the second retaining ring 45 are both connected to the circumference of the pushing rod 33, and the first retaining ring 44 and the second retaining ring 45 are respectively located on both sides of the pushing plate 43; the protective tube 46 is connected to the end face of the box body 21, the pushing rod 33 passes through the protective tube 46 and the pushing mechanism 4 is located in the protective tube 46.

[0052] When the sliding plate 22 is pulled to the end of the box body 21 by the pushing rod 33, the pushing rod 33 drives the pushing ring 331 to continue to compress the spring 35, and the pushing rod 33 drives the first retaining ring 44 and the second retaining ring 45 to continue to move, and the second retaining ring 45 contacts the push plate 43 and pushes the push plate 43, and the push plate 43 drives the push rod 42, and the push rod 42 pulls the push frame 41, and the push frame 41 can pull the four slides 225; when the sliding plate 22 is pushed to the other end of the box body 21 by the pushing rod 33, the pushing rod 33 drives the pushing ring 331 compresses another spring 35, and the push rod 33 drives the first baffle ring 44 and the second baffle ring 45 to continue to move. The first baffle ring 44 contacts the push plate 43 and pushes the push plate 43. The push plate 43 drives the push rod 42, and the push rod 42 pushes the push frame 41. The push frame 41 can push the four slides 225. By pushing the cylinder 31, the movement of the sliding plate 22 and the movement of the slide 225 can be completed. When the sliding plate 22 stops moving, it can be sealed through the square sealing plate 224.

[0053] Two ceramic filter plates 111 are vertically mounted on the inner wall of the filter box 11 , and the ceramic filter plates 111 are used to absorb fixed particles in the exhaust gas.

[0054] Four baffles 121 are arranged in the condensation box 12, and the four baffles 121 are evenly distributed along the vertical direction of the condensation box 12. The four baffles 121 are all inclined, and two baffles 121 are inclined downward away from the end of the second pipe 02, and the other two baffles 121 are inclined downward close to the end of the second pipe 02. Two baffles 121 with the same inclination direction and another two baffles 121 with the same inclination direction are staggered; a condensation pipe 122 is arranged under each baffle plate 121, and the condensation pipe 122 is installed on the side wall of the box body 21, and the condensation pipe 122 is cooled by an external refrigerator 123; the end of the second pipe 02 connected to the condensation box 12 is located below the lowest baffle 121; the bottom of the condensation box 12 is recessed downward to form a liquid collecting bin 124.

[0055] In the process of passing the exhaust gas into the condensation box 12, the exhaust gas passes through four groups of condensation tubes 122 in sequence, and the volatile organic compounds in the exhaust gas are condensed and liquefied. The liquefied organic compounds flow from the baffle plate 121 to the liquid collecting bin 124 at the bottom of the condensation box 12, and the uncondensed volatile organic compounds enter the activated carbon adsorption box 2 from the third pipe 03.

[0056] The exhaust gas treatment device also includes a distillation tower 14 installed on the top surface of the substrate 1, and the bottom of the distillation tower 14 stores the organic compound solution to be distilled and separated; a first spiral heat exchange tube 141 is arranged at the bottom of the distillation tower 14, the top of the first spiral heat exchange tube 141 passes through the distillation tower 14 and is connected to the end of the sixth pipeline 06, the bottom end of the first spiral heat exchange tube 141 passes through the distillation tower 14 and penetrates from the top of the absorption tube, and the bottom end of the first spiral heat exchange tube 141 extends below the liquid level of the absorption tank 13.

[0057] As the activated carbon plate 23 is desorbed under the action of the hot air flow, the desorbed exhaust gas enters the first spiral heat exchange tube 141 through the sixth pipe 06. The exhaust gas transfers heat to the organic compound solution in the distillation tower 14 through the first spiral heat exchange tube 141. The exhaust gas temperature is reduced after heat exchange in the first spiral heat exchange tube 141. The exhaust gas is then absorbed in the cold water of the absorption tube. The heat in the exhaust gas can be recovered and utilized through the first spiral heat exchange tube 141.

[0058] A second spiral heat exchange tube 131 is arranged in the absorption tank 13, the bottom end of the second spiral heat exchange tube 131 passes through the bottom of the absorption tank 13 and the end is connected to the end of the liquid collecting bin 124, the top end of the second spiral heat exchange tube 131 passes through the top of the absorption tank 13 and penetrates into the distillation tower 14, and the end of the second spiral heat exchange tube 131 close to the liquid collecting bin 124 is connected to the first water pump 132.

[0059] Since the temperature of the organic compound solution in the liquid collecting bin 124 is relatively low, the organic compound solution is pumped into the second spiral heat exchange tube 131 by the first water pump 132. The second spiral heat exchange tube 131 transfers the cold energy of the organic compound solution to the cold water in the absorption tank 13, thereby reducing the temperature of the cold water in the absorption tank 13. The organic compound solution with increased temperature is then discharged into the distillation tower 14 to utilize the organic compound solution and reduce energy loss.

[0060] The bottom of the absorption tank 13 is connected to one end of a first water pipe 133, the other end of the first water pipe 133 is connected to the distillation tower 14, and the first water pipe 133 is connected to a second water pump 134; the top of the absorption tank 13 is connected to one end of a second water pipe 135, the other end of the second water pipe 135 is connected to an external water source, and the second water pipe 135 is connected to a third water pump 136.

[0061] When the concentration of the organic compound solution in the absorption tank 13 reaches the standard, the second water pump 134 pumps the organic compound solution in the absorption tank 13 into the distillation tower 14 through the first water pipe 133, and then the third water pump 136 pumps clean water through the second water pipe 135 to continue absorbing volatile organic compounds.

[0062] The method for treating waste gas from the production of impregnated paper includes the following steps:

[0063] S1. The exhaust gas is introduced from the first pipe 01, and the exhaust gas passes through the filter box 11, the second pipe 02, the condensation box 12, the third pipe 03, the adsorption chamber 211 and the activated carbon plate 23 in sequence;

[0064] S2. The first water pump 132 pumps the organic compound solution at the bottom of the liquid collecting bin 124 into the distillation tower 14 through the second spiral heat exchange tube 131;

[0065] S3 distillation tower 14 at the bottom of the mixed organic compound solution is distilled and separated to obtain a monomer organic compound;

[0066] S4. When the adsorption amount of the activated carbon plate 23 reaches the standard, the driving mechanism 3 drives the sliding plate 22 to move to the other end of the box 21, so that the activated carbon plate 23 originally located in the adsorption chamber 211 moves to the desorption chamber 212 at one end, and the activated carbon plate 23 originally located in the desorption chamber 212 moves to the adsorption chamber 211;

[0067] S5. A hot air flow is introduced into the fifth pipe 05 , and the hot air flow desorbs the activated carbon adsorption plate in the desorption chamber 212 , so that the desorbed exhaust gas enters the cold water in the absorption tank 13 through the sixth pipe 06 and the first spiral heat exchange tube 141 .

[0068] The implementation principle of the device and method for treating waste gas from the production of impregnated paper in the embodiment of the present application is as follows: the waste gas generated by the production of impregnated paper is discharged into the first pipe 01, the waste gas enters the filter box 11 through the first pipe 01, the filter box 11 filters the solid particulate matter in the waste gas, and the filtered waste gas enters the condensation box 12, the condensation box 12 cools and liquefies the volatile organic compounds in the waste gas, so that the liquefied organic matter falls to the bottom of the condensation box 12, and the volatile organic compounds in the waste gas are collected; the waste gas that is not condensed by the condensation box 12 enters the activated carbon adsorption box 2 through the third pipe 03, the activated carbon in the activated carbon adsorption box 2 absorbs the volatile organic compounds in the waste gas, and then the clean air is discharged from the fourth pipe 04 to the outside The volatile organic compounds in the exhaust gas are adsorbed, and then hot air is passed through the fifth pipe 05. The hot air enters the activated carbon adsorption box 2. The activated carbon in the activated carbon adsorption box 2 is heated to desorb the volatile organic compounds on the activated carbon. The desorbed volatile organic compounds flow to the absorption tank 13 through the sixth pipe 06. The cold water in the absorption tank 13 absorbs the volatile organic compounds. The volatile organic compounds that are not absorbed flow into the second pipe 02 through the seventh pipe 07, and then flow back to the condensation box 12 for condensation and liquefaction. The volatile organic compounds in the exhaust gas are absorbed and converted into a volatile organic compound solution. The volatile organic compounds are collected and utilized, which can improve the economic benefits of exhaust gas treatment.

[0069] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A waste gas treatment device for gummed paper production, characterized in that: The invention comprises a filter box (11), a condensation box (12), an activated carbon adsorption box (2) and an absorption tank (13) installed on the top surface of a base plate (1); one side of the filter box (11) is connected to one end of a first pipe (01); the other end of the first pipe (01) is used for blowing in waste gas; the other side of the filter box (11) is connected to one end of a second pipe (02); the other end of the second pipe (02) is connected to one side of the condensation box (12); the filter box (11) is used for filtering solid particles in the waste gas; the top of the condensation box (12) is connected to one end of a third pipe (03); one end of the third pipe (03) is connected to the activated carbon adsorption box (2). One side of the activated carbon adsorption box (2) is connected to a fourth pipe (04); one side of the activated carbon adsorption box (2) close to the fourth pipe (04) is connected to one end of a fifth pipe (05), and the other end of the fifth pipe (05) is used for hot air to enter; one side of the activated carbon adsorption box (2) close to the third pipe (03) is connected to one end of a sixth pipe (06), and the other end of the sixth pipe (06) is connected to an absorption tank (13), and cold water is contained in the absorption tank (13); one end of a seventh pipe (07) is connected to the top of the absorption tank (13), and the other end of the seventh pipe (07) is connected to the circumference of the second pipe (02); The activated carbon adsorption box (2) comprises a box body (21), a sliding plate (22) and an activated carbon plate (23); the box body (21) is mounted on the top surface of the base plate (1); the sliding plate (22) slides in the box body (21); two through-going mounting grooves (221) are arranged in the sliding plate (22); two activated carbon plates (23) are arranged, and the two activated carbon plates (23) are respectively mounted on the inner walls of the two mounting grooves (221); the interior of the box body (21) is evenly divided into three chambers from one end to the other end, and the middle chamber is an adsorption chamber. The chamber (211) is a chamber with two chambers at both ends being desorption chambers (212); one of the mounting grooves (221) is aligned with the adsorption chamber (211), and the other mounting groove (221) is aligned with one of the desorption chambers (212); the end of the third pipe (03) and the end of the fourth pipe (04) are connected to the adsorption chamber (211), and the fifth pipe (05) and the sixth pipe (06) are connected to the two desorption chambers (212); a driving mechanism (3) for driving the sliding plate (22) to reciprocate is installed at the end of the box body (21); The side of the sliding plate (22) is provided with a sealing groove (223) arranged around the installation groove (221), and the sealing groove (223) is square; a sealing plate (224) is arranged in the sealing groove (223), and the sealing plate (224) slides on the inner wall of the sealing groove (223); four slide plates (225) are inserted into the sliding plate (22), and the four slide plates (225) are arranged along the length direction of the sliding plate (22), two of which are located on one side of the sliding plate (22) and are arranged up and down, and the other two slide plates (225) are located on the sliding plate (22). On the other side and arranged up and down, the slide plate (225) is located between the sealing plates (224) on both sides, a plurality of wedge blocks (226) are connected to the side of the slide plate (225) close to the sealing plate (224), a plurality of pushing blocks (227) are arranged on the side of the sealing plate (224) close to the slide plate (225), and the pushing blocks (227) are provided with grooves (2271) matched with the wedge blocks (226), and one end of the slide plate (225 extends out of the end of the sliding plate (22); a pushing mechanism (4) for pushing the slide plate (225) is arranged at the end of the box body (21).

2. The waste gas treatment device for gummed paper production according to claim 1 is characterized by: Both sides of the box body (21) are connected to a first air collecting hood (213), the two first air collecting hoods (213) are aligned with the adsorption chamber (211), the end of the third pipe (03) is connected to the first air collecting hood (213) close to the condensation box (12), and the end of the fourth pipe (04) is connected to the first air collecting hood (213) far from the condensation box (12); both sides of the box body (21) are connected to two second air collecting hoods (214), the two second air collecting hoods (214) are respectively at the two ends of the box body (21), and the two second air collecting hoods (214) are respectively aligned with the two desorption chambers (212); an eighth pipe (08) is arranged on the side of the box body (21) close to the condensation box (12), and the two ends of the eighth pipe (08) are respectively connected to Two second air collecting hoods (214) close to the condensing box (12), the sixth pipeline (06) is connected to the middle position of the eighth pipeline (08), the eighth pipeline (08) is connected to two first solenoid valves (081), and the two first solenoid valves (081) are located on both sides of the sixth pipeline (06); a ninth pipeline (09) is arranged on the side of the box body (21) away from the condensing box (12), the two ends of the ninth pipeline (09) are respectively connected to the two second air collecting hoods (214) away from the condensing box (12), the end of the fifth pipeline (05) is connected to the ninth pipeline (09), the ninth pipeline (09) is connected to two second solenoid valves (091), and the two second solenoid valves (091) are located on both sides of the fifth pipeline (05).

3. The waste gas treatment device for gummed paper production according to claim 1 is characterized by: Four rotating rods (222) are rotatably connected to both sides of the sliding plate (22), and the four rotating rods (222) are respectively located at four corners of the sliding plate (22). The inner wall of the box body (21) is provided with rolling grooves (215) for the rotating rods (222) on both sides of the box body (21) to roll.

4. The waste gas treatment device for producing impregnated paper according to claim 1 is characterized by: The driving mechanism (3) comprises a pushing cylinder (31), a connecting plate (32) and a pushing rod (33); the pushing cylinder (31) is mounted on the top surface of the box body (21); one end of the connecting plate (32) is connected to the end of the piston rod of the pushing cylinder (31); the end of the pushing rod (33) is connected to the bottom end of the connecting plate (32); the other end of the pushing rod (33) penetrates into the box body (21) and the end is mounted on the end surface of the sliding plate (22).

5. The waste gas treatment device for producing impregnated paper according to claim 4 is characterized by: The end of the sliding plate (22) close to the pushing rod (33) is connected with a sleeve (34), the end of the sleeve (34) is closed, the end of the pushing rod (33) is inserted into the sleeve (34), the peripheral surface of the pushing rod (33) is connected with a pushing ring (331), the pushing ring (331) is located in the sleeve (34), two springs (35) are arranged in the sleeve (34), the two springs (35) are both sleeved on the end of the pushing rod (33), the pushing ring (331) is located between the two springs (35), the two springs (35) are pressed against the side of the pushing ring (331), one end of the spring (35) is pressed against the end face of the sliding plate (22), and the other spring (35) is pressed against the end face of the sleeve (34); the inner wall of the box body (21) is connected with two limit plates (216), the two limit plates (216) are vertically arranged, and the end face of the sliding plate (22) is in contact with the side face of the limit plate (216).

6. The waste gas treatment device for producing impregnated paper according to claim 5, characterized in that: The pushing mechanism (4) comprises a pushing frame (41), a pushing rod (42), a pushing plate (43), a first retaining ring (44) and a second retaining ring (45); the pushing frame (41) is connected to the ends of four slide plates (225); the pushing frame (41) is sleeved outside the sleeve (34); four pushing rods (42) are provided, and the four pushing rods (42) are all connected to the side of the pushing frame (41); the four pushing rods (42) are evenly distributed around the circumference of the sleeve (34); one side of the pushing plate (43) is connected to the ends of the four pushing rods (42); the pushing rods ( The push plate (43) is passed through by the casing (21), and a movable opening (217) is provided at the end of the casing (21) for the push plate (43), the push rod (42) and the sleeve (34) to pass through; the first retaining ring (44) and the second retaining ring (45) are both connected to the circumference of the push rod (33), and the first retaining ring (44) and the second retaining ring (45) are respectively located on both sides of the push plate (43); the protective tube (46) is connected to the end surface of the casing (21), the push rod (33) passes through the protective tube (46) and the pushing mechanism (4) is located in the protective tube (46).

7. The waste gas treatment device for gummed paper production according to claim 1 is characterized by: The waste gas treatment device also includes a distillation tower (14) installed on the top surface of the base plate (1), and the bottom of the distillation tower (14) stores an organic compound solution to be distilled and separated; a first spiral heat exchange tube (141) is arranged in the bottom of the distillation tower (14), the top end of the first spiral heat exchange tube (141) passes through the distillation tower (14) and is connected to the end of the sixth pipeline (06), the bottom end of the first spiral heat exchange tube (141) passes through the distillation tower (14) and penetrates from the top of the absorption tank (13), and the bottom end of the first spiral heat exchange tube (141) extends below the liquid level of the absorption tank (13).

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