Activated carbon adsorption and desorption treatment device for VOCs waste gas

Abstract

The utility model relates to the technical field of VOCs waste gas purification treatment, in particular to a VOCs waste gas activated carbon adsorption and desorption treatment device which comprises an adsorption and desorption box and an air heater, the adsorption and desorption box comprises a box body, a mounting shaft, a barrel body, an activated carbon module and a driving assembly, the box body is of a hollow cylinder structure and is divided into an adsorption chamber and a desorption chamber by a partition plate, and the mounting shaft is arranged on the mounting shaft; a through hole is formed in the partition plate, the mounting shaft is mounted in the through hole, the barrel is of a hollow cylindrical structure and is divided into a first cavity and a second cavity by a baffle, the mounting shaft penetrates through the baffle and is in running fit with the baffle, activated carbon modules are arranged in the first cavity and the second cavity respectively, and the peripheral wall of the barrel is arranged in an annular groove formed in the inner wall of the box. The driving assembly is arranged at the top end of the box body to drive the barrel body to rotate, and the hot-air blower is communicated with the desorption chamber; the VOCs waste gas treatment device is simple in structural design, conversion between adsorption and desorption is convenient and safe, and solid particles in VOCs waste gas can be effectively removed.

Description

Technical Field

[0001] The utility model relates to the technical field of VOCs waste gas purification treatment, in particular to a VOCs waste gas activated carbon adsorption and desorption treatment device. Background Art

[0002] Waste gas containing volatile organic compounds (VOCs) is one of the main sources of air pollution. Conventional VOCs waste gas treatment technologies include water absorption, adsorption, photocatalysis and low-temperature plasma. Among them, the activated carbon adsorption method uses the dense pore structure of activated carbon to adsorb and intercept VOCs molecules when they pass through the activated carbon.

[0003] In the activated carbon adsorption method, in order to maintain a lasting adsorption effect, the saturated activated carbon needs to be replaced or desorbed and regenerated. Direct carbon replacement will produce a large amount of hazardous waste, and the saturated activated carbon needs to be transferred to the treatment site for desorption treatment. The operation is cumbersome and there are safety hazards to the staff. Desorption regeneration requires the staff to take out the saturated activated carbon in the adsorption device for desorption treatment, and then reinstall it. The operation is also cumbersome and there are safety hazards to the staff. In addition, the existing VOCs waste gas treatment device does not effectively remove the solid particles in the VOCs waste gas, resulting in poor treatment effect of the subsequent activated carbon adsorption method, affecting the purification effect of the VOCs waste gas. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to overcome the deficiencies in the prior art and to provide a VOCs waste gas activated carbon adsorption and desorption treatment device which has a simple structural design, convenient and safe conversion between adsorption and desorption, and can effectively remove solid particles in VOCs waste gas.

[0005] The utility model adopts the following technical solution to solve the technical problem: a VOCs waste gas activated carbon adsorption and desorption treatment device, comprising an adsorption and desorption box and a hot air blower, the adsorption and desorption box comprising a box body, a mounting shaft, a barrel, an activated carbon module and a drive assembly, the box body is a hollow cylindrical structure, and is divided into an adsorption chamber and a desorption chamber by a partition, a through hole is provided on the partition, the mounting shaft is installed in the through hole, the barrel body is a hollow cylindrical structure, and is divided into a first cavity and a second cavity by a baffle, the mounting shaft passes through the baffle and rotates with the baffle, the first cavity and the second cavity are respectively provided with activated carbon modules, the outer peripheral wall of the barrel body is arranged in an annular groove provided on the inner wall of the box body, the drive assembly is arranged at the top of the box body to drive the barrel body to rotate, and the hot air blower is connected to the desorption chamber.

[0006] Furthermore, the driving assembly includes a ring gear, a rotating shaft, a synchronous gear and a servo motor. The ring gear is arranged in an annular cavity opened in the casing and is sleeved on the cylinder. The rotating shaft is rotatably installed on the top of the casing. The synchronous gear is installed on the rotating shaft. The rim of the synchronous gear passes through the tooth hole opened in the top of the casing and meshes with the ring gear. The servo motor is installed at the top of the casing, and its output end is connected to the right end of the rotating shaft.

[0007] Furthermore, sealing members are respectively embedded on the left and right end surfaces of the cylinder.

[0008] Furthermore, it also includes a combustion furnace and an oxygenator, the combustion furnace is communicated with the adsorption chamber and the desorption chamber respectively, and the oxygenator is communicated with the combustion furnace.

[0009] Furthermore, the combustion furnace includes a furnace body and a burner, the air inlet of the furnace body is connected to the adsorption chamber and the desorption chamber respectively, and its air outlet is connected to the spray tower through the first induced draft fan, and the burners are respectively arranged at the upper and lower ends of the furnace body.

[0010] Furthermore, it also includes a filter box, which is connected to the adsorption chamber through a second induced draft fan.

[0011] Furthermore, the filter box includes a shell, a filter layer, a beating hammer, a threading barrel, a pull rope, a wire drum, a rotating rod and a power assembly. The filter layer is arranged in the middle of the shell, and the beating hammer is arranged above the filter layer. The top of the beating hammer is hinged to the top of the inner wall of the shell, and its bottom end is in contact with the filter layer. The threading barrel is installed in the middle of the top of the shell, one end of the pull rope is connected to the bottom end of the beating hammer, and the other end thereof passes through the threading barrel and is connected to the wire drum. The wire drum is rotatably installed at the top of the shell through the rotating rod, and the power assembly is installed on the left part of the top of the shell to provide power for the rotation of the rotating rod.

[0012] Furthermore, the power assembly includes a small motor, a missing gear and a slave gear, the small motor is installed at the top of the shell, and its output end is connected to the missing gear, the slave gear is installed in the middle of the rotating rod, and the missing gear is meshed with the slave gear.

[0013] The beneficial effects of the utility model are:

[0014] (1) The utility model drives the cylinder to rotate through a driving component. When the activated carbon module in the adsorption chamber is saturated with adsorption and needs to be desorbed and regenerated, it is only necessary to start the driving component to drive the cylinder to rotate, so that the activated carbon module rotates to the desorption chamber to perform the desorption and regeneration process. The structural design is simple, and the conversion between adsorption and desorption is convenient and safe.

[0015] (2) The utility model continuously strikes the filter layer in the filter box by setting a striking hammer, thereby shaking off the solid particles attached to the filter layer, ensuring the filtering effect of the filter layer, thereby improving the purification effect of VOCs waste gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a cross-sectional view of the adsorption and desorption box in the utility model;

[0019] Figure 3 yes Figure 2 Enlarged view of part A in the middle;

[0020] Figure 4 It is a side view of the cylinder in the utility model;

[0021] Figure 5 It is a cross-sectional view of the filter box in the utility model.

[0022] In the figure: 100, adsorption and desorption box; 110, box body; 111, partition; 112, adsorption chamber; 113, desorption chamber; 114, through hole; 115, annular groove; 116, annular cavity; 117, tooth hole; 120, mounting shaft; 130, cylinder; 131, baffle; 132, first cavity; 133, second cavity; 140, activated carbon module; 150, drive assembly; 151, gear ring; 152, rotating shaft; 153, synchronous gear; 154, servo motor machine; 200, hot air blower; 300, seal; 400, combustion furnace; 410, furnace body; 420, burner; 500, oxygenator; 600, first induced draft fan; 700, filter box; 710, shell; 720, filter layer; 730, hammer; 740, threading drum; 750, pull rope; 760, wire drum; 770, rotating rod; 780, power assembly; 781, small motor; 782, missing gear; 783, slave gear; 800, second induced draft fan. DETAILED DESCRIPTION

[0023] The present invention is now further described in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0024] Example 1

[0025] like Figure 1-Figure 3As shown, a VOCs waste gas activated carbon adsorption and desorption treatment device includes an adsorption and desorption box 100 and a hot air blower 200. The adsorption and desorption box 100 includes a box body 110, a mounting shaft 120, a cylinder body 130, an activated carbon module 140 and a driving assembly 150. The box body 110 is a hollow cylindrical structure and is divided into an adsorption chamber 112 and a desorption chamber 113 by a partition 111. A through hole 114 is opened on the partition 111, and the mounting shaft 120 is installed in the through hole 114. The cylinder body 130 is a hollow cylindrical structure. The cylindrical structure is divided into a first cavity 132 and a second cavity 133 by a baffle 131. The mounting shaft 120 passes through the baffle 131 and rotates with the baffle 131. The first cavity 132 and the second cavity 133 are respectively provided with an activated carbon module 140. The outer peripheral wall of the cylinder 130 is arranged in an annular groove 115 provided on the inner wall of the box 110. The driving assembly 150 is arranged at the top of the box 110 to drive the cylinder 130 to rotate. The hot air blower 200 is connected with the desorption chamber 113. The cylinder 130 is driven to rotate by the driving assembly 150. When the activated carbon module 140 in the adsorption chamber 112 is saturated with adsorption and needs to be desorbed and regenerated, it is only necessary to start the driving assembly 150 to drive the cylinder 130 to rotate, so that the activated carbon module 140 rotates to the desorption chamber 113 to perform the desorption and regeneration process. The structural design is simple, and the conversion between adsorption and desorption is convenient and safe. Specifically, the cross-sections of the adsorption chamber 112, the desorption chamber 113, the first cavity 132 and the second cavity 133 are all semicircular; the hot air blower 200 is connected to the air inlet of the desorption chamber 113 through a connecting pipe, and the hot air blower 200 outputs hot air to desorb and regenerate the corresponding activated carbon module 140 in the desorption chamber 113.

[0026] like Figure 2 and Figure 3 As shown, the driving assembly 150 includes a ring gear 151, a rotating shaft 152, a synchronous gear 153 and a servo motor 154. The ring gear 151 is arranged in the annular cavity 116 provided in the housing 110 and is sleeved on the cylinder 130. The rotating shaft 152 is rotatably mounted on the top of the housing 110. The synchronous gear 153 is mounted on the rotating shaft 152. The rim of the synchronous gear 153 passes through the tooth hole 117 provided on the top of the housing 110 and meshes with the ring gear 151. The servo motor 154 is mounted on the top of the housing 110, and its output end is connected to the right end of the rotating shaft 152. Specifically, there are two ring gears 151, which are sleeved on the left and right ends of the cylinder 130 respectively; the rotating shaft 152 is mounted on the top of the housing 110 through a bearing seat; there are two synchronous gears 153, which are mounted on the left and right ends of the rotating shaft 152 respectively. When the cylinder 130 needs to be driven to rotate, the servo motor 154 drives the rotating shaft 152 to rotate, thereby synchronously driving the two synchronous gears 153 to rotate. Due to the meshing of the ring gear 151 and the synchronous gear 153, the ring gear 151 is driven to rotate, thereby driving the cylinder 130 to rotate.

[0027] like Figure 4As shown, in order to improve the sealing performance, sealing members 300 are respectively embedded in the left and right end surfaces of the cylinder 130 , and the sealing members 300 are respectively in contact with the side wall of the through hole 114 and the side wall of the annular groove 115 .

[0028] like Figure 1 As shown, the VOCs waste gas activated carbon adsorption and desorption treatment device also includes a combustion furnace 400 and an oxygenator 500. The combustion furnace 400 is respectively connected to the adsorption chamber 112 and the desorption chamber 113. The oxygenator 500 is connected to the combustion furnace 400 and is used to add oxygen into the combustion furnace 400. Through the setting of the combustion furnace 400, on the one hand, the waste gas after adsorption and purification by the activated carbon module 140 can be subjected to secondary catalytic combustion treatment; on the other hand, the organic waste gas after desorption and regeneration of the adsorption saturated activated carbon module 140 can be catalytically burned to form carbon dioxide and water, thereby further improving the purification effect.

[0029] like Figure 1 As shown, the combustion furnace 400 includes a furnace body 410 and a burner 420. The air inlet of the furnace body 410 is respectively connected to the adsorption chamber 112 and the desorption chamber 113, and the air outlet thereof is connected to the spray tower (not shown) through the first induced draft fan 600. The burner 420 is respectively arranged at the upper and lower ends of the furnace body 410. Specifically, the air inlet of the combustion furnace 400 is respectively connected to the adsorption chamber 112 and the desorption chamber 113 through a connecting pipe, and the connecting pipes are respectively provided with solenoid valves.

[0030] Example 2

[0031] like Figure 1 As shown, this embodiment adds a filter box 700 to the embodiment 1, and the filter box 700 is connected to the adsorption chamber 112 through the second induced draft fan 800. Through the setting of the filter box 700, the solid particles in the VOCs exhaust gas are filtered and removed, ensuring the adsorption and purification effect of the subsequent activated carbon module 140.

[0032] like Figure 1 and Figure 5As shown, the filter box 700 includes a shell 710, a filter layer 720, a beating hammer 730, a threading barrel 740, a pull rope 750, a wire drum 760, a rotating rod 770 and a power assembly 780. The filter layer 720 is arranged in the middle of the shell 710, the beating hammer 730 is arranged above the filter layer 720, the top of the beating hammer 730 is hinged to the top of the inner wall of the shell 710, and its bottom end is in contact with the filter layer 720, the threading barrel 740 is installed in the middle of the top of the shell 710, one end of the pull rope 750 is connected to the bottom end of the beating hammer 730, and the other end thereof passes through the threading barrel 740 and is connected to the wire drum 760, the wire drum 760 is rotatably installed at the top of the shell 710 through the rotating rod 770, and the power assembly 780 is installed on the left part of the top of the shell 710 to provide power for the rotation of the rotating rod 770. By setting the hammer 730, the filter layer 720 in the filter box 700 is continuously struck to shake off the solid particles attached to the filter layer 720, thereby ensuring the filtering effect of the filter layer 720, thereby improving the purification effect of VOCs exhaust gas. Specifically, the power assembly 780 includes a small motor 781, a missing gear 782 and a slave gear 783. The small motor 781 is installed at the top of the housing 710, and its output end is connected to the missing gear 782. The slave gear 783 is installed in the middle of the rotating rod 770, and the missing gear 782 is meshed with the slave gear 783.

[0033] When the filter layer 720 needs to be struck and vibrated, the small motor 781 drives the missing gear 782 to rotate, and then drives the rotating rod 770 to rotate through the slave gear 783. The rotation of the rotating rod 770 drives the wire drum 760 to rotate and then reels the pull rope 750, thereby pulling up the striking hammer 730. Since the missing gear 782 is an incomplete gear, when the missing gear 782 and the slave gear 783 are no longer engaged, the striking hammer 730 falls due to its own gravity and strikes the filter layer 720, thereby shaking off the solid particles attached to the filter layer 720; when the small motor 781 drives the missing gear 782 to rotate and engage with the slave gear 783 again, the striking hammer 730 is pulled up again.

[0034] In the initial state, the adsorption chamber 112 corresponds to the first cavity 132, and the desorption chamber 113 corresponds to the second cavity 133. During operation, the VOCs waste gas enters the filter box 700 for filtration, and then is introduced into the adsorption chamber 112 by the second induced draft fan 800, and after being adsorbed by the activated carbon module 140 in the first cavity 132, enters the combustion furnace 400 for catalytic combustion, and finally is introduced into the spray tower by the first induced draft fan 600 for purification and discharge. When the activated carbon module 140 in the first cavity 132 is saturated with adsorption, the driving component 150 drives the cylinder 130 to rotate 180°, so that the adsorption chamber 112 corresponds to the second cavity 133, and the desorption chamber 113 corresponds to the first cavity 132, and the hot air blower 200 desorbs and regenerates the saturated activated carbon module 140 in the first cavity 132. The organic waste gas after desorption and regeneration enters the combustion furnace 400 for catalytic combustion, and is finally introduced into the spray tower by the first induced draft fan 600 for purification and discharge again.

[0035] The above-mentioned implementation mode is only for illustrating the technical concept and features of the utility model, and its purpose is to enable people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A VOCs waste gas activated carbon adsorption and desorption treatment device, characterized in that: The invention comprises an adsorption and desorption box (100) and a hot air blower (200), wherein the adsorption and desorption box (100) comprises a box body (110), a mounting shaft (120), a cylinder body (130), an activated carbon module (140) and a driving assembly (150), wherein the box body (110) is a hollow cylindrical structure and is divided into an adsorption chamber (112) and a desorption chamber (113) by a partition (111), wherein a through hole (114) is provided on the partition (111), and the mounting shaft (120) is installed in the through hole (114), wherein the cylinder body (130) is a hollow cylindrical structure and is divided into an adsorption chamber (112) and a desorption chamber (113) by a baffle (131). 1) is divided into a first cavity (132) and a second cavity (133), the installation shaft (120) passes through the baffle (131) and is rotatably matched with the baffle (131), the first cavity (132) and the second cavity (133) are respectively provided with an activated carbon module (140), the outer peripheral wall of the cylinder (130) is arranged in an annular groove (115) opened on the inner wall of the box (110), the driving component (150) is arranged at the top end of the box (110) to drive the cylinder (130) to rotate, and the hot air blower (200) is connected to the desorption chamber (113).

2. The VOCs waste gas activated carbon adsorption and desorption treatment device according to claim 1 is characterized in that: The driving assembly (150) comprises a ring gear (151), a rotating shaft (152), a synchronous gear (153) and a servo motor (154); the ring gear (151) is arranged in an annular cavity (116) provided in the housing (110) and sleeved on the cylinder (130); the rotating shaft (152) is rotatably mounted on the top of the housing (110); the synchronous gear (153) is mounted on the rotating shaft (152); the wheel rim of the synchronous gear (153) passes through a tooth hole (117) provided in the top of the housing (110) and meshes with the ring gear (151); the servo motor (154) is mounted on the top of the housing (110) and its output end is connected to the right end of the rotating shaft (152).

3. The VOCs waste gas activated carbon adsorption and desorption treatment device according to claim 1 is characterized in that: Sealing components (300) are respectively embedded on the left and right end surfaces of the cylinder (130).

4. The VOCs waste gas activated carbon adsorption and desorption treatment device according to claim 1, characterized in that: It also includes a combustion furnace (400) and an oxygenator (500), wherein the combustion furnace (400) is communicated with the adsorption chamber (112) and the desorption chamber (113) respectively, and the oxygenator (500) is communicated with the combustion furnace (400).

5. The VOCs waste gas activated carbon adsorption and desorption treatment device according to claim 4 is characterized in that: The combustion furnace (400) comprises a furnace body (410) and a burner (420); an air inlet of the furnace body (410) is respectively connected to an adsorption chamber (112) and a desorption chamber (113), and an air outlet thereof is connected to a spray tower via a first induced draft fan (600); and the burner (420) is respectively arranged at the upper and lower ends of the furnace body (410).

6. The VOCs waste gas activated carbon adsorption and desorption treatment device according to claim 1, characterized in that: It also includes a filter box (700), wherein the filter box (700) is connected to the adsorption chamber (112) via a second induced draft fan (800).

7. The VOCs waste gas activated carbon adsorption and desorption treatment device according to claim 6, characterized in that: The filter box (700) comprises a shell (710), a filter layer (720), a hammer (730), a threading tube (740), a pull rope (750), a wire drum (760), a rotating rod (770) and a power assembly (780). The filter layer (720) is arranged in the middle of the shell (710), and the hammer (730) is arranged above the filter layer (720). The top end of the hammer (730) is hinged to the top end of the inner wall of the shell (710), and the bottom end of the hammer (730) is hinged to the top end of the inner wall of the shell (710). The filter layer (720) is in contact with the threading barrel (740), and the threading barrel (740) is installed in the middle of the top end of the shell (710). One end of the pull rope (750) is connected to the bottom end of the hammer (730), and the other end thereof passes through the threading barrel (740) and is connected to the wire drum (760). The wire drum (760) is rotatably installed on the top end of the shell (710) through a rotating rod (770). The power assembly (780) is installed on the left part of the top end of the shell (710) to provide power for the rotation of the rotating rod (770).

8. The VOCs waste gas activated carbon adsorption and desorption treatment device according to claim 7, characterized in that: The power assembly (780) includes a small motor (781), a missing gear (782) and a slave gear (783). The small motor (781) is installed at the top of the housing (710), and its output end is connected to the missing gear (782). The slave gear (783) is installed in the middle of the rotating rod (770), and the missing gear (782) is meshed with the slave gear (783).

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