A waste gas recovery and purification device for benzene preparation

Abstract

The invention discloses a waste gas recovery and purification device for benzene preparation, and relates to the technical field of waste gas treatment. The side of the filter component is fixedly connected with an air intake component, and the end of the air intake component away from the filter component is fixedly connected with a purification component. The filter component comprises a filter housing, and the side of the filter housing is fixedly connected with the air intake component, and the side of the filter housing is fixedly connected with an air intake pipe, and the inner side of the filter housing is fixedly connected with an absorption mechanism. The invention provides a filter component, connects an external pipeline with the air intake pipe, and then sucks the waste gas into the filter housing through the air intake component. At the same time, the suction force generated by the air intake component causes the scraper mechanism to slide from top to bottom in the filter housing through a guide rod, and the waste gas continues to pass through, and the waste gas is pre-treated and filtered by the absorption mechanism, so that larger particles in the waste gas are filtered.

Description

Technical Field

[0001] The invention relates to the technical field of waste gas treatment, and in particular to a waste gas recovery and purification device for benzene preparation. Background Art

[0002] The composition of waste gas produced during the preparation of benzene is relatively complex. Unreacted benzene vapor: This is one of the most important components and exists in the waste gas due to the incompleteness of the reaction. Other aromatic compounds: Such as toluene and xylene, which may be generated during the reaction or appear as by-products. Volatile organic compounds, in addition to aromatic substances, may also include volatile organic compounds such as alcohols, aldehydes, and ketones. Acidic gases: For example, hydrogen chloride and sulfur dioxide, which depend on the specific process and raw materials used to prepare benzene. Inert gases such as nitrogen and oxygen come from the protective gas used in the reaction or the gases involved in the reaction. Particulate matter: It may be tiny solid particles produced during the reaction, or catalyst powder carried out with the gas.

[0003] These waste gas components not only pollute the environment and endanger human health, but also may be flammable and explosive. Therefore, in the benzene preparation process, effective waste gas treatment measures must be taken to reduce its adverse effects on the environment and personnel. Summary of the invention

[0004] In view of the shortcomings of the prior art, the technical solution adopted by the present invention to solve the technical problems is: a waste gas recovery and purification device for benzene preparation described in the present invention comprises:

[0005] A filter component, which is used to recover and filter the waste gas generated by the preparation of benzene, wherein a suction component is fixedly connected to the side of the filter component, and a purification component is fixedly connected to one end of the suction component away from the filter component;

[0006] The filter component includes a filter housing, a side of the filter housing is fixedly connected to the air intake component, an air intake pipe is fixedly connected to the side of the filter housing, an absorption mechanism is fixedly connected to the inner side of the filter housing, a guide rod is fixedly connected to the top of the absorption mechanism, a first spring is sleeved on the guide rod, the top of the first spring is fixedly connected to the top of the inner wall of the filter housing, the bottom of the first spring is fixedly connected to the connecting plate, and a scraper mechanism is slidably connected to the guide rod; after the external pipeline is connected to the air intake pipe, the exhaust gas is sucked into the filter housing through the air intake component, and at the same time, the suction force generated by the air intake component causes the scraper mechanism to slide from top to bottom in the filter housing through the guide rod, and the exhaust gas continues to pass through, and the exhaust gas is pre-treated and filtered by the absorption mechanism, so as to filter larger particles in the exhaust gas.

[0007] Preferably, the scraper mechanism includes a connecting plate, the inner side of the connecting plate is slidably connected to the side of the guide rod, and the side of the connecting plate is provided with a yield groove, and scrapers are fixedly connected to both sides of the connecting plate, and the side of the connecting plate away from the first spring is fixedly connected to an impact block; when the exhaust gas treatment work is performed and the suction component stops working, the connecting plate is reset by the stretching of the first spring, so that the connecting plate drives the scraper to move upward on the guide rod, so that the scraper cleans and scratches the inner wall of the filter housing, thereby preventing the exhaust gas from passing through the filter housing for a long time, which will cause a large amount of impurities to remain on the inner wall of the filter housing, thereby reducing the service life of the filter housing, and by arranging an impact block on the connecting plate, it is prevented that the connecting plate will collide with the top of the inner cavity of the filter housing when following the first spring to reset and move, thereby causing extrusion damage to the scraper, and at the same time, by providing a yield groove on the connecting plate, it is prevented that the connecting plate will interfere with the normal passing speed of the exhaust gas when sliding in the inner cavity of the filter housing.

[0008] Preferably, the absorption mechanism includes a carbon powder box, the inner wall of which is rotatably connected to a rotating rod, both sides of which are fixedly connected to rotating leaves, the sides of the rotating leaves are evenly provided with square grooves, the inner wall of the square groove is rotatably connected to a circular arc rod, both sides of the circular arc rod are fixedly connected to contact plates; when the exhaust gas is driven into the inner cavity of the filter housing by the suction component, the exhaust gas enters the carbon powder box through the continuous operation of the suction component, and at the same time, activated carbon blocks are provided in the carbon powder box, so that when the exhaust gas passes through the carbon powder box, it can filter the larger particles remaining in the exhaust gas, thereby avoiding the residual larger particles in the exhaust gas during the subsequent purification and recovery of the exhaust gas. Large particles cause inconvenience to subsequent work. At the same time, when the suction component drives the exhaust gas through the charcoal powder box, the rotating rod drives the rotating blades to rotate in the charcoal powder box, so that the rotating blades can fully stir the activated carbon blocks in the charcoal powder box, so that the activated carbon blocks can better adsorb and filter the exhaust gas. At the same time, by opening square grooves on the rotating blades, when the rotating blades and the activated carbon blocks are fully mixed and stirred, the contact plate can be flipped in the square grooves through the arc rods, so that the activated carbon blocks in the charcoal powder box can be mixed and contacted up and down, thereby increasing the flipping range of the activated carbon blocks in the charcoal powder box, and then the activated carbon blocks can be fully contacted and adsorbed when the exhaust gas passes through the charcoal powder box.

[0009] Preferably, the purification component includes a purification shell, the side of the purification shell is fixedly connected to the air intake component, the bottom of the purification shell is fixedly connected with a storage mechanism, the inner side of the purification shell is fixedly connected with a condensation mechanism, the top of the inner cavity of the purification shell is fixedly connected with an activated carbon layer, the top of the purification shell is fixedly connected with a discharge mechanism, and the side of the purification shell away from the air intake component is fixedly connected with a connecting mechanism; the exhaust gas after pre-treatment and filtration by the filter shell passes through the suction force of the air intake component, so that the exhaust gas enters the purification shell, so that the exhaust gas passes through the condensation mechanism, so that the condensation mechanism reduces the temperature of the exhaust gas, condenses benzene vapor and other high-boiling point organic matter into liquid, and the liquid naturally falls into the storage mechanism due to gravity for collection, and at the same time, the exhaust gas generated during the condensation of the exhaust gas can be discharged through the discharge mechanism after the activated carbon layer adsorbs the residual harmful substances in the exhaust gas, and at the same time, when there is a lot of condensed water stored in the storage mechanism, it can be discharged through the connecting mechanism.

[0010] Preferably, the connecting mechanism includes a discharge pipe, a side of the discharge pipe is fixedly connected to the inner side of the purification shell, a baffle is fixedly connected to the inner wall of the discharge pipe, a filter is fixedly connected to the inner side of the discharge pipe, a mesh plate is fixedly connected to the side of the inner wall of the discharge pipe away from the baffle, a telescopic rod is fixedly connected to the side of the mesh plate, an end of the telescopic rod away from the mesh plate is fixedly connected to a connecting frame, a second spring is sleeved on the telescopic rod, one end of the second spring is fixedly connected to the connecting frame, the other end of the second spring is fixedly connected to the mesh plate, and a ejection assembly is fixedly connected to the side of the connecting frame close to the mesh plate; when a lot of condensed water is stored in the storage mechanism, the impact force of the condensed water on the mesh plate is greater than the tensile force of the second spring , so that the ejection assembly moves in the inner cavity of the discharge pipe, so that the ejection assembly is separated from the mesh plate, so that the condensed water in the storage mechanism can be discharged through the discharge pipe. At the same time, by arranging a filter in the discharge pipe, the condensed water can be purified for a second time to avoid that the exhaust gas after condensation treatment still cannot fully meet the emission standards. When the device completes the exhaust gas purification work, the water output in the storage mechanism is less than the tensile force of the second spring, so that the ejection assembly drives the connecting frame to move toward the mesh plate through the stretching and resetting work of the second spring, thereby blocking the mesh plate and preventing the condensed water from entering the discharge pipe through the mesh plate. A small amount of fine particles still remain in the condensed water, which will remain in the mesh holes of the mesh plate when passing through the mesh plate.

[0011] Preferably, the ejection assembly includes an ejection rod, one end of the ejection rod away from the ejection block is fixedly connected to the connecting frame, a connecting shaft is inserted into the ejection rod, the side surface of the connecting shaft is slidably connected to the inner side of the ejection rod, one end of the connecting shaft is fixedly connected to the ejection block, the end of the connecting shaft away from the ejection block is fixedly connected to a slider, the side surface of the slider is slidably connected to the inner side of the ejection rod, the side surface of the slider is fixedly connected to a third spring, and the end of the third spring away from the slider is fixedly connected to the inner wall of the ejection rod, when the connecting frame is driven to move toward the mesh plate by the tensile force of the second spring, the ejection rod is driven to move toward the mesh plate by the connecting frame at the same time, so that the ejection rod drives the ejection block to move to the mesh hole of the mesh plate, thereby avoiding residual The particles in the condensed water accumulate at the mesh holes and cause blockage in the mesh holes of the mesh plate. At the same time, when the ejector block contacts the inner wall of the mesh hole of the mesh plate, it can contact and move with the inner wall of the mesh hole through the side of the ejector block, thereby preventing impurities from remaining in the mesh holes of the mesh plate. At the same time, when the ejector block contacts the mesh holes, the ejector block is subjected to the friction and extrusion force at the mesh holes of the mesh plate, and can drive the slider to move inside the ejector rod through the connecting shaft. At the same time, the buffering of the third spring can prevent the ejector block from being in extrusion contact with the mesh holes of the mesh plate, which may cause excessive extrusion force, thereby causing extrusion wear on the side of the ejector block. At the same time, the ejector block is driven by the connecting frame to continue to move in the mesh hole, so that the ejector block blocks the mesh holes of the mesh plate.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. The present invention provides a filter component, connects the external pipe to the air inlet pipe, and then sucks the exhaust gas into the filter housing through the suction component. At the same time, the suction force generated by the suction component causes the scraper mechanism to slide from top to bottom in the filter housing through the guide rod, and the exhaust gas continues to pass through. The exhaust gas is pre-treated and filtered by the absorption mechanism, thereby filtering larger particles in the exhaust gas.

[0014] 2. The present invention provides a scraper mechanism. After the exhaust gas treatment work is carried out and the air intake component stops working, the connecting plate is reset by the stretching of the first spring, so that the connecting plate drives the scraper to move upward on the guide rod, so that the scraper cleans and scratches the inner wall of the filter housing, thereby preventing the exhaust gas from passing through the filter housing for a long time, which will cause a large amount of impurities to remain on the inner wall of the filter housing, thereby reducing the service life of the filter housing. By providing an impact block on the connecting plate, it is prevented that the connecting plate will not collide with the top of the inner cavity of the filter housing when following the first spring to reset, thereby causing extrusion damage to the scraper. At the same time, by providing a clearance groove on the connecting plate, it is prevented that the connecting plate will not interfere with the normal passing speed of the exhaust gas when sliding in the inner cavity of the filter housing.

[0015] 3. The present invention provides a purification component, and the waste gas after pre-treatment through the filter housing passes through the suction of the suction component, so that the waste gas enters the purification housing, and then passes through the condensation mechanism, so that the condensation mechanism reduces the temperature of the waste gas, and condenses benzene vapor and other high-boiling point organic matter into liquid, and the liquid naturally falls into the storage mechanism due to gravity and is collected, and at the same time, the tail gas generated during the condensation of the waste gas can be discharged through the discharge mechanism after the activated carbon layer adsorbs the residual harmful substances in the tail gas, and at the same time, when there is a lot of condensed water stored in the storage mechanism, it can be discharged through the connecting mechanism.

[0016] 4. The present invention provides a connecting mechanism. When a large amount of condensed water is stored in the storage mechanism, the impact force of the condensed water on the mesh plate is greater than the tensile force of the second spring, so that the ejection assembly moves in the inner cavity of the discharge pipe, so that the ejection assembly is separated from the mesh plate, and the condensed water in the storage mechanism can be discharged through the discharge pipe. At the same time, a filter is provided in the discharge pipe to perform secondary purification on the condensed water, so as to avoid the exhaust gas after condensation treatment still not being able to fully meet the emission standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of the waste gas recovery and purification device for benzene preparation of the present invention;

[0018] Figure 2 is a cross-sectional view of the present invention;

[0019] Figure 3 It is a schematic diagram of the structure of the filter component of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the scraper mechanism of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the absorption mechanism of the present invention;

[0022] Figure 6 It is a schematic diagram of the structure of the purification component of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the connection mechanism of the present invention;

[0024] Figure 8 The present invention Figure 7 The structural diagram at A in the middle;

[0025] In the figure: 1, filter component; 11, filter housing; 12, air inlet pipe; 13, absorption mechanism; 131, carbon powder box; 132, rotating rod; 133, rotating blade; 134, square groove; 135, contact plate; 136, arc rod; 14, guide rod; 15, scraper mechanism; 151, connecting plate; 152, give way groove; 153, scraper; 154, impact block; 16, first spring; 2, suction component; 3, purification component; 31, net shell; 32, condensation mechanism; 33, storage mechanism; 34, activated carbon layer; 35, discharge mechanism; 36, connecting mechanism; 361, discharge pipe; 362, baffle; 363, filter; 364, telescopic rod; 365, connecting frame; 366, second spring; 367, ejector assembly; 3671, ejector rod; 3672, connecting shaft; 3673, slider; 3674, ejector block; 3675, third spring; 368, mesh plate. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0027] Example 1, using Figure 1-Figure 5 A waste gas recovery and purification device for benzene preparation according to one embodiment of the present invention is described as follows:

[0028] like Figure 1-Figure 5 The present invention shows that a waste gas recovery and purification device for benzene preparation includes:

[0029] A filter component 1, which is used to recover and filter the waste gas generated by the preparation of benzene. An air intake component 2 is fixedly connected to the side of the filter component 1, and a purification component 3 is fixedly connected to one end of the air intake component 2 away from the filter component 1;

[0030] The filter component 1 includes a filter housing 11, a side of the filter housing 11 is fixedly connected to the air intake component 2, an air intake pipe 12 is fixedly connected to the side of the filter housing 11, an absorption mechanism 13 is fixedly connected to the inner side of the filter housing 11, a guide rod 14 is fixedly connected to the top of the absorption mechanism 13, a first spring 16 is sleeved on the guide rod 14, the top of the first spring 16 is fixedly connected to the top of the inner wall of the filter housing 11, the bottom of the first spring 16 is fixedly connected to the connecting plate 151, and a scraper mechanism 15 is slidably connected to the guide rod 14; after the external pipeline is connected to the air intake pipe 12, the exhaust gas is sucked into the filter housing 11 through the air intake component 2, and at the same time, the suction force generated by the air intake component 2 causes the scraper mechanism 15 to slide from top to bottom in the filter housing 11 through the guide rod 14, and the exhaust gas continues to pass through, and the exhaust gas is pre-treated and filtered by the absorption mechanism 13, so that larger particles in the exhaust gas are filtered.

[0031] The scraper mechanism 15 includes a connecting plate 151, the inner side of which is slidably connected to the side of the guide rod 14, a clearance groove 152 is provided on the side of the connecting plate 151, and scrapers 153 are fixedly connected to both sides of the connecting plate 151, and a collision block 154 is fixedly connected to the side of the connecting plate 151 away from the first spring 16; when the exhaust gas treatment work is performed and the air intake component 2 stops working, the connecting plate 151 is reset by the stretching of the first spring 16, so that the connecting plate 151 drives the scraper 153 to move upward on the guide rod 14, so that the scraper 153 cleans and scrapes the inner wall of the filter housing 11 The connection plate 151 is provided with an impact block 154 to prevent the connection plate 151 from colliding with the top of the inner cavity of the filter housing 11 when following the first spring 16 to return and move, thereby causing squeezing damage to the scraper 153. At the same time, a clearance groove 152 is provided on the connection plate 151 to prevent the connection plate 151 from sliding in the inner cavity of the filter housing 11 and interfering with the normal passing speed of the exhaust gas.

[0032] The absorption mechanism 13 includes a carbon powder box 131, the inner wall of which is rotatably connected to a rotating rod 132, both sides of which are fixedly connected to rotating blades 133, and the sides of the rotating blades 133 are evenly provided with square grooves 134, the inner wall of the square groove 134 is rotatably connected to a circular arc rod 136, and both sides of the circular arc rod 136 are fixedly connected to contact plates 135; when the exhaust gas is driven by the suction component 2 to enter the inner cavity of the filter housing 11, the exhaust gas is continuously operated by the suction component 2 so that the exhaust gas enters the carbon powder box 131, and at the same time, by arranging an activated carbon block in the carbon powder box 131, when the exhaust gas passes through the carbon powder box 131, it can filter the larger particles remaining in the exhaust gas, thereby avoiding the larger particles remaining in the exhaust gas from affecting the subsequent purification and recovery of the exhaust gas. At the same time, when the suction component 2 drives the exhaust gas to pass through the carbon powder box 131, the rotating rod 132 drives the rotating blade 133 to rotate in the carbon powder box 131, so that the rotating blade 133 can fully stir the activated carbon block in the carbon powder box 131, so that the activated carbon block can better adsorb and filter the exhaust gas. At the same time, by providing a square groove 134 on the rotating blade 133, when the rotating blade 133 and the activated carbon block are fully mixed and stirred, the contact plate 135 can be turned over in the square groove 134 through the arc rod 136, so that the activated carbon block in the carbon powder box 131 can be mixed and contacted up and down, thereby increasing the turning range of the activated carbon block in the carbon powder box 131, and then when the exhaust gas passes through the carbon powder box 131, the activated carbon block can be fully contacted and adsorbed.

[0033] Embodiment 2, use Figure 6-Figure 8 The waste gas recovery and purification device for benzene preparation of the present invention is described as follows:

[0034] like Figure 6-Figure 8 It is shown that a waste gas recovery and purification device for benzene preparation of the present invention is based on the first embodiment;

[0035] The purification component 3 includes a purification shell 31, the side of the purification shell 31 is fixedly connected to the air intake component 2, the bottom of the purification shell 31 is fixedly connected with a storage mechanism 33, the inner side of the purification shell 31 is fixedly connected with a condensation mechanism 32, the top of the inner cavity of the purification shell 31 is fixedly connected with an activated carbon layer 34, the top of the purification shell 31 is fixedly connected with a discharge mechanism 35, and the side of the purification shell 31 away from the air intake component 2 is fixedly connected with a connection mechanism 36; the exhaust gas after pre-treatment and filtration by the filter shell 11 passes through the suction force of the air intake component 2, so that the exhaust gas The exhaust gas enters the purification housing 31, so that it passes through the condensation mechanism 32, which reduces the temperature of the exhaust gas and condenses the benzene vapor and other high-boiling point organic matter into liquid. The liquid naturally falls into the storage mechanism 33 due to gravity and is collected. At the same time, the exhaust gas generated during the condensation of the exhaust gas passes through the activated carbon layer 34 to adsorb the residual harmful substances in the exhaust gas, and can be discharged through the discharge mechanism 35. At the same time, when there is a lot of condensed water stored in the storage mechanism 33, it can be discharged through the connecting mechanism 36.

[0036] The connecting mechanism 36 includes a discharge pipe 361, the side of which is fixedly connected to the inner side of the purification housing 31, a baffle 362 is fixedly connected to the inner wall of the discharge pipe 361, a filter 363 is fixedly connected to the inner side of the discharge pipe 361, a mesh plate 368 is fixedly connected to the side of the inner wall of the discharge pipe 361 away from the baffle 362, a telescopic rod 364 is fixedly connected to the side of the mesh plate 368, an end of the telescopic rod 364 away from the mesh plate 368 is fixedly connected to a connecting frame 365, a second spring 366 is sleeved on the telescopic rod 364, one end of the second spring 366 is fixedly connected to the connecting frame 365, the other end of the second spring 366 is fixedly connected to the mesh plate 368, and a ejection assembly 367 is fixedly connected to the side of the connecting frame 365 close to the mesh plate 368; when a lot of condensed water is stored in the storage mechanism 33, the impact force of the condensed water on the mesh plate 368 is greater than the tensile force of the second spring 366 , so that the ejection component 367 moves in the inner cavity of the discharge pipe 361, so that the ejection component 367 is separated from the mesh plate 368, so that the condensed water in the storage mechanism 33 can be discharged through the discharge pipe 361, and at the same time, by arranging a filter 363 in the discharge pipe 361, the condensed water can be secondary purified to avoid that the exhaust gas after condensation treatment still cannot fully meet the emission standards. When the device completes the exhaust gas purification work, the water output in the storage mechanism 33 is less than the tensile force of the second spring 366, so that the ejection component 367 drives the connecting frame 365 to move toward the mesh plate 368 through the stretching and resetting work of the second spring 366, thereby blocking the mesh plate 368 and preventing the condensed water from passing through the mesh plate 368 and entering the discharge pipe 361. A small amount of fine particles still remain in the condensed water, so that it will remain in the mesh holes of the mesh plate 368 when passing through the mesh plate 368.

[0037] The ejection assembly 367 includes an ejection rod 3671, one end of the ejection rod 3671 away from the ejection block 3674 is fixedly connected to the connecting frame 365, a connecting shaft 3672 is inserted into the ejection rod 3671, the side of the connecting shaft 3672 is slidably connected to the inner side of the ejection rod 3671, one end of the connecting shaft 3672 is fixedly connected to the ejection block 3674, and the end of the connecting shaft 3672 away from the ejection block 3674 is fixedly connected to the slider 3673, and the side of the slider 3673 is slidably connected to the ejection rod 3671. The third spring 3675 is fixedly connected to the inner side of the slider 3673, and one end of the third spring 3675 away from the slider 3673 is fixedly connected to the inner wall of the ejector rod 3671. When the connecting frame 365 is driven to move toward the mesh plate 368 by the tensile force of the second spring 366, the ejector rod 3671 is driven to move toward the mesh plate 368 by the connecting frame 365, so that the ejector rod 3671 drives the ejector block 3674 to adjust the mesh of the mesh plate 368. The ejection block 3674 is moved to prevent the particles remaining in the condensed water from accumulating at the mesh holes and clogging the mesh holes of the mesh plate 368. At the same time, when the ejection block 3674 contacts the inner wall of the mesh hole of the mesh plate 368, the side of the ejection block 3674 can contact and move with the inner wall of the mesh hole to prevent impurities from remaining at the mesh holes of the mesh plate 368. At the same time, when the ejection block 3674 contacts the mesh holes, the ejection block 3674 is subjected to the friction and extrusion force at the mesh holes of the mesh plate 368. The connecting shaft 3672 drives the slider 3673 to move inside the ejection rod 3671. At the same time, the third spring 3675 acts as a buffer to prevent the ejection block 3674 from being in extrusion contact with the mesh of the mesh plate 368, which may cause excessive extrusion force and extrusion wear on the side of the ejection block 3674. At the same time, the ejection block 3674 is driven by the connecting frame 365 to continue moving in the mesh, so that the ejection block 3674 blocks the mesh of the mesh plate 368.

[0038] The specific workflow is as follows:

[0039] When benzene is prepared, it is connected to the filter component 1 through an external pipe, so that the waste gas generated by the benzene preparation is discharged into the filter component 1, and the larger particles in the waste gas are filtered. At the same time, the filtered waste gas enters the filter component 1 through the suction component 2, so that the filtered waste gas is recovered and purified;

[0040] After the external pipe is connected to the air inlet pipe 12, the exhaust gas is sucked into the filter housing 11 through the air suction component 2. At the same time, the suction force generated by the air suction component 2 causes the scraper mechanism 15 to slide from top to bottom in the filter housing 11 through the guide rod 14. The exhaust gas continues to pass through, and the exhaust gas is pre-treated and filtered by the absorption mechanism 13, so that larger particles in the exhaust gas are filtered;

[0041] After the exhaust gas treatment work is performed and the air intake component 2 stops working, the connecting plate 151 is reset by the stretching of the first spring 16, so that the connecting plate 151 drives the scraper 153 to move upward on the guide rod 14, so that the scraper 153 cleans and scrapes the inner wall of the filter housing 11, thereby preventing the exhaust gas from passing through the filter housing 11 for a long time, which will cause a large amount of impurities to remain on the inner wall of the filter housing 11, thereby reducing the service life of the filter housing 11. By providing an impact block 154 on the connecting plate 151, it is prevented that the connecting plate 151 will collide with the top of the inner cavity of the filter housing 11 when following the first spring 16 to reset and move, thereby causing extrusion damage to the scraper 153. At the same time, by providing a clearance groove 152 on the connecting plate 151, it is prevented that the normal passing speed of the exhaust gas will be interfered with when the connecting plate 151 slides in the inner cavity of the filter housing 11.

[0042] When the exhaust gas is driven into the inner cavity of the filter housing 11 by the suction component 2, the exhaust gas is continuously operated by the suction component 2 so that the exhaust gas enters the carbon powder box 131. At the same time, by providing an activated carbon block in the carbon powder box 131, when the exhaust gas passes through the carbon powder box 131, it can filter the larger particles remaining in the exhaust gas, thereby avoiding the inconvenience caused by the larger particles remaining in the exhaust gas during the subsequent purification and recovery of the exhaust gas. At the same time, when the exhaust gas is driven by the suction component 2 to pass through the carbon powder box 131, the rotating rod 132 drives the rotating blade 133 to rotate in the carbon powder box 131, thereby The rotating blade 133 fully stirs the activated carbon block in the carbon powder box 131, so that the activated carbon block can better adsorb and filter the exhaust gas. At the same time, the square groove 134 is provided on the rotating blade 133, so that when the rotating blade 133 and the activated carbon block are fully mixed and stirred, the contact plate 135 can be turned over in the square groove 134 through the arc rod 136, so that the activated carbon block in the carbon powder box 131 can be mixed and contacted up and down, thereby increasing the turning range of the activated carbon block in the carbon powder box 131, and then when the exhaust gas passes through the carbon powder box 131, the activated carbon block can be fully contacted and adsorbed;

[0043] The exhaust gas after pre-treatment and filtration by the filter housing 11 passes through the suction force of the air intake component 2, so that the exhaust gas enters the purification housing 31, so that the exhaust gas passes through the condensation mechanism 32, so that the condensation mechanism 32 reduces the exhaust gas temperature, condenses benzene vapor and other high-boiling point organic matter into liquid, and the liquid naturally falls into the storage mechanism 33 by gravity for collection. At the same time, the exhaust gas generated during the condensation of the exhaust gas passes through the activated carbon layer 34 to adsorb the residual harmful substances in the exhaust gas, and can be discharged through the discharge mechanism 35. At the same time, when there is a lot of condensed water stored in the storage mechanism 33, it can be discharged through the connection mechanism 36;

[0044] When there is a lot of condensed water stored in the storage mechanism 33, the impact force exerted by the condensed water on the mesh plate 368 is greater than the tensile force of the second spring 366, so that the ejection assembly 367 moves in the inner cavity of the discharge pipe 361, so that the ejection assembly 367 is separated from the mesh plate 368, so that the condensed water in the storage mechanism 33 can be discharged through the discharge pipe 361, and at the same time, the filter 363 is provided in the discharge pipe 361 to perform secondary purification on the condensed water, so as to avoid that the exhaust gas after condensation treatment still cannot fully meet the emission standards;

[0045] When the device completes the exhaust gas purification work, when the water output in the storage mechanism 33 is less than the tensile force of the second spring 366, the ejection assembly 367 drives the connecting frame 365 to move toward the mesh plate 368 through the tensile reset work of the second spring 366, thereby blocking the mesh plate 368 and preventing a small amount of fine particles from remaining in the condensed water when the condensed water passes through the mesh plate 368 and enters the discharge pipe 361, so that the condensed water will remain in the mesh holes of the mesh plate 368 when passing through the mesh plate 368;

[0046] When the connecting frame 365 is driven to move toward the mesh plate 368 by the tensile force of the second spring 366, the ejector rod 3671 is driven to move toward the mesh plate 368 by the connecting frame 365, so that the ejector rod 3671 drives the ejector block 3674 to move to the mesh holes of the mesh plate 368, thereby preventing the particles remaining in the condensed water from accumulating at the mesh holes and clogging the mesh holes of the mesh plate 368. At the same time, when the ejector block 3674 contacts the inner wall of the mesh hole of the mesh plate 368, it can contact and move with the inner wall of the mesh hole through the side of the ejector block 3674, thereby preventing impurities from remaining at the mesh holes of the mesh plate 368. When the ejection block 3674 comes into contact with the mesh, and is subjected to the frictional extrusion force at the mesh of the mesh plate 368, the ejection block 3674 can drive the slider 3673 to move inside the ejection rod 3671 through the connecting shaft 3672. At the same time, the third spring 3675 is used for buffering to avoid excessive extrusion force when the ejection block 3674 comes into contact with the mesh of the mesh plate 368, thereby causing extrusion and wear on the side of the ejection block 3674. At the same time, the ejection block 3674 is driven by the connecting frame 365 to continue to move in the mesh, so that the ejection block 3674 blocks the mesh of the mesh plate 368.

[0047] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention are implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A waste gas recovery and purification device for benzene production, characterized in that: include: A filter component (1), the filter component (1) being used for recovering and filtering waste gas generated by benzene preparation, a suction component (2) being fixedly connected to a side of the filter component (1), and a purification component (3) being fixedly connected to an end of the suction component (2) away from the filter component (1); The filter component (1) comprises a filter housing (11), an air intake pipe (12) is fixedly connected to a side of the filter housing (11), an absorption mechanism (13) is fixedly connected to the inner side of the filter housing (11), a guide rod (14) is fixedly connected to the top of the absorption mechanism (13), a first spring (16) is sleeved on the guide rod (14), and a scraper mechanism (15) is slidably connected to the guide rod (14); The absorption mechanism (13) comprises a toner box (131), the inner wall of the toner box (131) being rotatably connected to a rotating rod (132), both sides of the rotating rod (132) being fixedly connected to rotating blades (133), the sides of the rotating blades (133) being evenly provided with square grooves (134), the inner wall of the square groove (134) being rotatably connected to a circular arc rod (136), and both sides of the circular arc rod (136) being fixedly connected to contact plates (135).

2. The waste gas recovery and purification device for benzene production according to claim 1, characterized in that: The scraper mechanism (15) comprises a connecting plate (151), a side of the connecting plate (151) is provided with a clearance groove (152), both sides of the connecting plate (151) are fixedly connected to scrapers (153), and the side of the connecting plate (151) away from the first spring (16) is fixedly connected to an impact block (154).

3. The waste gas recovery and purification device for benzene production according to claim 2, characterized in that: The inner side of the connecting plate (151) is slidably connected to the side of the guide rod (14), the top of the first spring (16) is fixedly connected to the top of the inner wall of the filter housing (11), the bottom of the first spring (16) is fixedly connected to the connecting plate (151), and the side of the filter housing (11) is fixedly connected to the air intake component (2).

4. The waste gas recovery and purification device for benzene production according to claim 1, characterized in that: The purification component (3) comprises a purification shell (31), the side of the purification shell (31) is fixedly connected to the air intake component (2), the bottom of the purification shell (31) is fixedly connected to a storage mechanism (33), the inner side of the purification shell (31) is fixedly connected to a condensation mechanism (32), the top of the inner cavity of the purification shell (31) is fixedly connected to an activated carbon layer (34), the top of the purification shell (31) is fixedly connected to a discharge mechanism (35), and the side of the purification shell (31) away from the air intake component (2) is fixedly connected to a connection mechanism (36).

5. The waste gas recovery and purification device for benzene production according to claim 4, characterized in that: The connection mechanism (36) comprises a discharge pipe (361), the inner wall of the discharge pipe (361) is fixedly connected to a baffle (362), the inner side of the discharge pipe (361) is fixedly connected to a filter (363), the inner wall of the discharge pipe (361) is fixedly connected to a mesh plate (368) on a side away from the baffle (362), a telescopic rod (364) is fixedly connected to a side of the mesh plate (368), an end of the telescopic rod (364) away from the mesh plate (368) is fixedly connected to a connection frame (365), a second spring (366) is sleeved on the telescopic rod (364), and a side of the connection frame (365) close to the mesh plate (368) is fixedly connected to an ejection assembly (367).

6. The waste gas recovery and purification device for benzene production according to claim 5, characterized in that: The side surface of the discharge pipe (361) is fixedly connected to the inner side of the purification shell (31), one end of the second spring (366) is fixedly connected to the connecting frame (365), and the other end of the second spring (366) is fixedly connected to the mesh plate (368).

7. The waste gas recovery and purification device for benzene production according to claim 5, characterized in that: The ejection assembly (367) comprises an ejection rod (3671), a connecting shaft (3672) is inserted into the ejection rod (3671), one end of the connecting shaft (3672) is fixedly connected to an ejection block (3674), one end of the connecting shaft (3672) away from the ejection block (3674) is fixedly connected to a sliding block (3673), and a side surface of the sliding block (3673) is fixedly connected to a third spring (3675).

8. The waste gas recovery and purification device for benzene production according to claim 7, characterized in that: One end of the ejector rod (3671) away from the ejector block (3674) is fixedly connected to the connecting frame (365), the side surface of the slider (3673) is slidably connected to the inner side of the ejector rod (3671), the side surface of the connecting shaft (3672) is slidably connected to the inner side of the ejector rod (3671), and one end of the third spring (3675) away from the slider (3673) is fixedly connected to the inner wall of the ejector rod (3671).

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