VOCs waste gas emission reduction and energy saving equipment

Abstract

The utility model relates to the technical field of waste gas treatment, and discloses VOCs waste gas emission reduction and energy conservation equipment which comprises an adsorption box, the adsorption box is internally divided into a first area and a second area; a stirring box in which an adsorbent is arranged is mounted on the inner top wall of the first area; a stirring mechanism is mounted in the stirring box; a connecting assembly is further mounted in the first area; an air inlet pipe, a motor and a conveying assembly are mounted outside the adsorption box; the gas inlet pipe is communicated with the stirring box, and waste gas reacting with the adsorbent is introduced into the stirring box; the motor is connected with the stirring mechanism to drive the stirring mechanism to rotate; the motor is further connected with the connecting assembly to drive the connecting assembly to intermittently communicate with the stirring box and the second area, so that the saturated adsorbent is intermittently input into the second area from the stirring box for regeneration; the conveying assembly is communicated with the stirring box and the second area, so that the adsorbent for regenerating adsorbability in the second area is intermittently input into the stirring box from the second area. The equipment is simple in structure and reasonable in layout, and the waste gas purification efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, and in particular to VOCs waste gas emission reduction and energy-saving equipment. Background Art

[0002] Volatile organic compounds (VOCs) refer to organic compounds that participate in atmospheric photochemical reactions, including non-methane hydrocarbons (alkanes, alkenes, alkynes, aromatic hydrocarbons, etc.), oxygen-containing organics (aldehydes, ketones, alcohols, ethers, etc.), chlorine-containing organics, nitrogen-containing organics, sulfur-containing organics, etc. The sources of VOCs include industrial production, transportation, solvent use, etc. VOCs emission reduction equipment refers to equipment that reduces organic pollutants emitted into the atmosphere. The design and function of these devices vary, but their main purpose is to reduce VOCs emissions.

[0003] However, conventional emission reduction equipment only passes VOCs into the adsorbent, and the VOCs come into contact with the static adsorbent and are absorbed by the adsorbent to reduce the amount of VOCs waste gas discharged. However, the static adsorbent has a limited contact area with VOCs and a low reaction rate, thereby reducing the VOCs treatment efficiency. At the same time, conventional emission reduction equipment cannot regenerate the adsorbent in a timely manner. After a period of use, the adsorbent becomes saturated with adsorption and usually needs to be replaced as a whole and disposed of as hazardous waste, which is not conducive to resource recycling and causes resource waste. Utility Model Content

[0004] The utility model aims to provide a VOCs waste gas emission reduction and energy-saving device to solve the technical problems of low VOCs waste gas treatment efficiency and resource waste in existing emission reduction equipment.

[0005] The basic scheme provided by the utility model is: a VOCs waste gas emission reduction and energy-saving device, comprising an adsorption box; the adsorption box is divided into a first area and a second area; a stirring box for built-in adsorbent is installed on the inner top wall of the first area; a stirring mechanism is installed in the stirring box; a connecting component connecting the stirring box and the second area is also installed in the first area;

[0006] An air intake pipe, a motor and a conveying assembly are installed on the outside of the adsorption box; the air intake pipe is connected to the stirring box, and is used to input waste gas for reacting with the adsorbent into the stirring box; the motor is connected to the stirring mechanism to drive the stirring mechanism to rotate; the motor is also connected to the connecting assembly to drive the connecting assembly to be intermittently connected to the stirring box and the second area respectively, so that the saturated adsorbent is intermittently input from the stirring box to the second area for regeneration; the conveying assembly connects the stirring box and the second area, and allows the adsorbent regenerated in the second area to be intermittently input from the second area to the stirring box.

[0007] The working principle and advantages of the utility model are: through the setting of the air intake pipe, the motor, the stirring box and the stirring mechanism, after the VOCs waste gas is introduced, the adsorbent is stirred, the contact area between the adsorbent and the VOCs waste gas is increased, the waste gas treatment efficiency is improved, and more waste gas can be effectively treated and purified. Through the setting of the connection component and the conveying component, the saturated adsorbent can be intermittently input from the stirring box to the second area for regeneration, and at the same time, the adsorbent regenerated in the second area can be intermittently input from the second area to the stirring box, so as to realize the timely and efficient regeneration of the adsorbent, and achieve the purpose of resource recycling, energy saving and carbon reduction.

[0008] The entire equipment is simple to install and easy to operate. Through reasonable layout, it can make the exhaust gas and adsorbent react fully, improve the VOCs exhaust gas purification efficiency, and also realize the regeneration and recycling of the adsorbent, thereby achieving energy saving and carbon reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 A schematic diagram of the structure of a VOCs waste gas emission reduction and energy-saving device provided by an embodiment of the utility model;

[0010] Figure 2 A schematic diagram of the structure of a VOCs waste gas emission reduction and energy-saving device (without a mounting column) provided in an embodiment of the utility model;

[0011] Figure 3 Schematic diagram of the internal structure of a VOCs waste gas emission reduction and energy-saving device provided in an embodiment of the utility model Figure 1 ;

[0012] Figure 4 Schematic diagram of the internal structure of a VOCs waste gas emission reduction and energy-saving device provided in an embodiment of the utility model Figure 2 ;

[0013] Figure 5 A cross-sectional view of the connection components of a VOCs waste gas emission reduction and energy-saving device provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0014] The following is a further detailed description through specific implementation methods:

[0015] The marks in the drawings of the specification include: adsorption box 1, air intake pipe 2, motor 3, mounting column 4, synchronous wheel 1 5, delivery pipe 6, water tank 7, synchronous wheel 2 8, connecting rod 9, bevel gear 1 10, bevel gear 2 11, steam pipe 12, mixing box 13, first gear 14, second gear 15, fixing part 16, stirring rod 17, turntable 18, moving rod 19, annular part 20, connecting cylinder 21, isolation plate 22, control valve 1 23, limit part 24, support block 25, control valve 2 26, first conduit 27, piston 28, rotating rod 29, second conduit 30, second moving rod 31, water pump 32, exhaust fan 33.

[0016] The embodiment is basically as shown in the attached Figure 1 , Figure 2 and Figure 3 As shown: a VOCs waste gas emission reduction and energy-saving device, including an adsorption box 1 with a hollow interior; the adsorption box 1 is divided into a first area and a second area. In this embodiment, the separation is performed by an isolation plate 22, and the isolation plate 22 is fixedly connected to the inner wall of the adsorption box 1. The upper part is the first area and the lower part is the second area.

[0017] The inner top wall of the first region is provided with a stirring box 13 for built-in adsorbent; a stirring mechanism is installed in the stirring box 13; specifically, Figure 3 and Figure 4 As shown, the stirring mechanism includes a fixing member 16, a first gear 14 installed on the top of the fixing member 16, and a plurality of second gears 15, wherein the fixing member 16 is fixedly connected to the inner wall of the stirring box 13, the fixing member 16 is rotationally connected to the first gear 14, and the first gear 14 and the plurality of second gears 15 are all meshedly connected; the second gear 15 is connected to a stirring member 17, and the stirring member 17 includes a first stirring rod and a second stirring rod, the first stirring rod is fixedly connected to the second gear 15, and the second stirring rod is fixedly connected to the first stirring rod and has a spiral structure, and the shape design can improve the stirring efficiency.

[0018] An air intake pipe 2 and a motor 3 are installed on the outside of the adsorption box, wherein the air intake pipe 2 is connected to the stirring box 13, and is used to send waste gas, such as VOCs waste gas, into the stirring box 13, and the waste gas is used to react with the adsorbent. In this embodiment, the air intake pipe 2 is fixedly connected to the top of the adsorption box 1, and is adapted to the position of the stirring box; wherein the motor 3 is connected to the stirring mechanism to drive the stirring mechanism to rotate, and then stir the adsorbent built into the stirring box 13, thereby increasing the contact area between the waste gas and the adsorbent and strengthening the reaction. Specifically, the output end of the motor 3, that is, the output shaft portion located in the stirring box, is fixedly connected to the first gear 14, and the first gear 14 is driven to rotate under the drive of the motor, and then the stirring member is driven to rotate according to the connection method of the stirring mechanism.

[0019] A connecting component connecting the stirring box and the second area is also installed in the first area; the motor 3 is also connected to the connecting component to drive the connecting component to be intermittently connected with the stirring box and the second area respectively, or it can be said that the intermittent connection between the stirring box and the second area is realized, so that the saturated adsorbent is intermittently input from the stirring box to the second area for regeneration; a conveying component is also installed on the outside of the adsorption box 1, and the conveying component connects the stirring box 13 and the second area, and the adsorbent regenerated in the second area is intermittently input from the second area to the stirring box 13.

[0020] Specifically, Figure 4 As shown, the connection assembly includes a support block 25, a connection cylinder 21, and a turntable 18 located between the support block 25 and the connection cylinder 21; the support block 25 is fixedly connected in the adsorption box 13, specifically on the isolation plate 22; Figure 4 and Figure 5 As shown, a piston 28 is installed inside the connecting cylinder 21, and a first conduit 27 and a second conduit 30 are installed outside, wherein the first conduit 27 connects the connecting cylinder 21 and the mixing box 13, and the second conduit 30 connects the connecting cylinder 21 and the second area; a control valve 23 is installed on the first conduit 27, and a control valve 26 is installed on the second conduit 30, and the control valve 1 23 and the control valve 2 26 are located close to the connecting cylinder 21, wherein the piston 28 is electrically connected to the control valve 1 23 and the control valve 2 26, and through the control circuit design, the piston 28 reaches the left and right limit positions to realize the corresponding opening and closing of the control valve 1 23 and the control valve 2 26, and the specific circuit design is realized by the existing technology and will not be repeated here.

[0021] A limiting member 24 is fixedly connected to one surface of the turntable 18, and a ring member 20 is slidably connected thereto, wherein the limiting member 24 is located inside the ring member 20; a first moving rod 19 and a second moving rod 31 are fixedly connected to the outside of the ring member 20, and the first moving rod 19 and the second moving rod 31 are symmetrically arranged relative to the ring member 20, wherein one end of the first moving rod 19 away from the ring member 20 is slidably connected to the support block 25, that is, a hole groove is provided inside the support block relative to the position of the first moving rod 19 that is adapted for the left and right sliding of the first moving rod 19, so as to enable the first moving rod 19 to slide inside the support block 25, thereby achieving a sliding connection between the two; one end of the second moving rod 31 away from the ring member 20 is fixedly connected to the piston 28. Therefore, the rotation of the turntable 18 will drive the limit member 24 to rotate. Since the ring member 20 is fixedly connected to the piston through the second moving rod, the outer part of the limit member 24 is slidably connected to the inner wall of the ring member 20. The rotation of the limit member 24 will not drive the ring member 20 to rotate, but will drive the ring member 20 to slide left and right, and then drive the piston to slide left and right through the second moving rod 31. At this time, the first moving rod 19 slides in and out of the hole groove of the support block 25, so that the ring member 20 is more stable when sliding, so that the ring member 20 is always in contact with the surface of the turntable 18.

[0022] A mounting column 4 is installed outside the adsorption box 1 and below the motor 3, which is used to support the stable installation of the motor 3 and seal the mounting holes of the motor 3 and the stirring box 13 to prevent exhaust gas from overflowing. Bevel gear 10, bevel gear 2 11 and connecting rod 9 are installed inside the mounting column 4, wherein bevel gear 1 is fixedly connected to the output end of the motor, that is, the output shaft part located at the top of the adsorption box, bevel gear 1 is meshed and connected with bevel gear 2, and bevel gear 2 is fixedly connected to one end of the connecting rod; synchronous wheel 1 5, synchronous wheel 2 8 and rotating rod 29 are installed outside the mounting column 4, wherein the other end of the connecting rod 9 is fixedly connected to synchronous wheel 1 5, synchronous wheel 1 5 and synchronous wheel 2 8 are rotationally connected, and rotating rod 29 connects synchronous wheel 2 8 and turntable 18. In this embodiment, synchronous wheel 1 5 and synchronous wheel 2 8 are rotationally connected by a belt. In this way, the motor 3 is connected to the connection assembly to drive the stirring box and the second area to be intermittently connected, so that the saturated adsorbent is intermittently input from the stirring box to the second area for regeneration.

[0023] The outside of the adsorption box 1 is fixedly connected with a water box 7, which is located below the adsorption box 1 in this embodiment; a heating rod is arranged inside the water box 7 for generating water vapor; a steam pipe 12 is connected and installed between the water box 7 and the second area of ​​the adsorption box 1, which is used to input water vapor into the second area. When the saturated adsorbent is sprayed into the second area, it reacts with the water vapor in the second area to achieve the regeneration of the adsorbent; an exhaust fan 33 is installed outside the second area of ​​the adsorption box 1, which is controlled by time to extract the desorbed water vapor in the second area after a certain period of time. This time needs to be determined according to the adsorbent dosage and the VOCs concentration of the reaction gas during actual operation. In this way, the adsorbent in the second area is regenerated.

[0024] The delivery assembly includes a delivery pipe 6 and a water pump 32 connected to the delivery pipe; the delivery pipe 6 is located outside the adsorption box and one end is connected to the top of the stirring box, and the other end is connected to the bottom of the second area. Under the action of the water pump 32, the adsorbent with regeneration adsorption in the second area is intermittently input from the second area to the stirring box 13.

[0025] When this equipment is used in practice, the main process is as follows:

[0026] A certain amount of adsorbent is placed in the stirring box 13, exhaust gas is introduced into the stirring box 13 from the air inlet pipe 2, and the motor 3 is started. The rotating shaft part of the motor 3 extending into the stirring box drives the first gear 14 to rotate, and under the meshing action, it drives multiple second gears 15 to rotate at the same time, and then drives the stirring member to stir the adsorbent. Through stirring, the contact area between the adsorbent and the exhaust gas can be increased, the adsorption of VOCs can be promoted, and the purpose of exhaust gas purification can be achieved. At this time, the adsorbent that has reacted with the exhaust gas is a saturated adsorbent, and is also an adsorbent to be regenerated.

[0027] At the same time, the part of the motor located at the top of the adsorption box drives the bevel gear 2 11 to rotate, and under the meshing action, drives the bevel gear 10 to rotate at the same time, the bevel gear 10 is fixedly connected to the connecting rod 9, thereby driving the connecting rod 9 to rotate, the connecting rod 9 is fixedly connected to the synchronous wheel 15, thereby driving the synchronous wheel 15 to rotate, and under the action of the belt, drives the synchronous wheel 2 8 to rotate, the synchronous wheel 2 8 is fixedly connected to the rotating rod 29, and then drives the rotating rod 29 to rotate, the rotating rod 29 is fixedly connected to the turntable 18, and then drives the turntable 18 to rotate.

[0028] The turntable 18 rotates, driving the limiter 24 fixedly connected to the turntable 18 to rotate, and the limiter 24 drives the annular member 20 to slide left and right along one side of the turntable 18, thereby driving the two moving rods to slide, and the first moving rod 19 contacts the support block 25, so that the annular member 20 is more stable when sliding, and the annular member 20 is always in contact with the surface of the turntable 18; the second moving rod 30 drives the piston 28 to slide back and forth left and right, wherein, when the second moving rod 30 pulls the piston 28 outward, the control valve 1 23 is closed, and the control valve 2 26 is opened, at this time, the connecting tube 21 is connected to the mixing box, and the engagement tube 21 is connected to the mixing box. The connecting cylinder 21 is isolated from the second area, and the saturated adsorbent (adsorbent to be regenerated) enters the interior of the connecting cylinder 21 from the stirring box through the second conduit 30; when the moving rod 19 pushes the piston 28 inward, the control valve 26 is closed and the control valve 1 23 is opened. At this time, the connecting cylinder 21 is isolated from the stirring box, and the connecting cylinder 21 is connected to the second area. The saturated adsorbent inside the connecting cylinder 21 is transported through the first conduit 27 and transferred from top to bottom to the second area of ​​the adsorption box 1; due to the left and right sliding of the piston and the intermittent opening and closing of the control valve 1 and the control valve 2, the intermittent transfer of the saturated adsorbent between the stirring box and the second area is realized.

[0029] At this time, the water in the water tank 7 is heated by the heating rod to form water vapor, and the water vapor enters the second area of ​​the adsorption box 1 from the water tank 7 through the steam pipe 12. The water vapor moves from bottom to top, and then contacts and reacts with the saturated adsorbent from top to bottom to remove the adsorption phase in the saturated adsorbent, so that the saturated adsorbent is regenerated, and the regenerated adsorbent falls to the bottom of the second area of ​​the adsorption box 1 due to gravity.

[0030] The exhaust fan is started according to time control to extract the desorbed water vapor (including waste gas). This part of the gas can be connected to other treatment devices for further treatment, which can further avoid the overflow of unpurified waste gas.

[0031] Start the water pump, extract the regenerated adsorbent at the bottom of the second area of ​​the adsorption box 1 through the delivery pipe 6, and input it into the interior of the stirring box 13 from the top of the stirring box 13, so that the adsorbent can be recycled to achieve energy saving and carbon reduction.

[0032] The VOCs waste gas emission reduction and energy-saving equipment provided in this embodiment, through the arrangement of the air intake pipe, the motor, the stirring box and the stirring mechanism, after the VOCs waste gas is introduced, realizes that the motor drives the second gear to rotate simultaneously through the first gear, so that multiple stirring rods stir the adsorbent, increase the contact area between the adsorbent and the VOCs waste gas, improve the waste gas treatment efficiency, ensure that more waste gas is effectively treated and purified, and improve the VOCs waste gas purification efficiency.

[0033] Through the arrangement of the connection component and the conveying component, the motor drives the bevel gear 2 to rotate simultaneously through the bevel gear 1, drives the turntable, and then drives the piston, the control valve 1 and the control valve 2 to cooperate effectively, so as to intermittently input the saturated adsorbent from the stirring tank into the second area; through the arrangement of the water tank and the second area, the saturated adsorbent input into the second area can be brought into contact with water vapor, and then the water vapor takes away the adsorbed phase in the adsorbent, so that the adsorbent is regenerated, achieving the purpose of resource recycling and energy saving and carbon reduction; the whole equipment is simple in device and easy to operate, and through reasonable layout, it can make the exhaust gas and the adsorbent react efficiently, and can also realize the regeneration and recycling of the adsorbent at the same time.

[0034] The above is only an embodiment of the utility model. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field are aware of all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement the scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A VOCs waste gas emission reduction and energy-saving device, characterized in that: It comprises an adsorption box; the adsorption box is divided into a first area and a second area; a stirring box for built-in adsorbent is installed on the inner top wall of the first area; a stirring mechanism is installed in the stirring box; a connecting component connecting the stirring box and the second area is also installed in the first area; An air intake pipe, a motor and a conveying assembly are installed on the outside of the adsorption box; the air intake pipe is connected to the stirring box, and is used to input waste gas for reacting with the adsorbent into the stirring box; the motor is connected to the stirring mechanism to drive the stirring mechanism to rotate; the motor is also connected to the connecting assembly to drive the connecting assembly to be intermittently connected to the stirring box and the second area respectively, so that the saturated adsorbent is intermittently input from the stirring box to the second area for regeneration; the conveying assembly connects the stirring box and the second area, and allows the adsorbent regenerated in the second area to be intermittently input from the second area to the stirring box.

2. A VOCs waste gas emission reduction and energy-saving device according to claim 1, characterized in that: The stirring mechanism includes a fixing member, a first gear located on the top of the fixing member and a plurality of second gears, wherein the fixing member is fixedly connected to the stirring box, the fixing member is rotationally connected to the first gear, the first gear and the plurality of second gears are meshedly connected; the second gear is connected to the stirring member; and the output end of the motor is connected to the first gear.

3. A VOCs waste gas emission reduction and energy-saving device according to claim 2, characterized in that: The stirring member comprises a first stirring rod and a second stirring rod, wherein the first stirring rod is fixedly connected to the second gear, and the second stirring rod is fixedly connected to the first stirring rod and has a spiral structure.

4. The VOCs waste gas emission reduction and energy-saving equipment according to claim 1 is characterized in that: The connection assembly is installed at the bottom of the mixing box.

5. The VOCs waste gas emission reduction and energy-saving equipment according to claim 1 is characterized in that: The connection assembly includes a connection cylinder and a turntable; a piston is installed inside the connection cylinder, and a first conduit and a second conduit are installed outside the connection cylinder, wherein the first conduit connects the connection cylinder and the mixing box, and the second conduit connects the connection cylinder and the second area; a control valve 1 is installed on the first conduit, and a control valve 2 is installed on the second conduit; a limiting member is fixedly connected to one side of the turntable, and a ring member is slidably connected thereto, wherein the limiting member is located inside the ring member; a second moving rod is fixedly connected to the outside of the ring member, wherein an end of the second moving rod away from the ring member is fixedly connected to the piston.

6. A VOCs waste gas emission reduction and energy-saving device according to claim 5, characterized in that: The connection assembly also includes a support block; the support block is fixedly connected in the adsorption box; the outside of the annular member is also fixedly connected to a first moving rod, and the first moving rod and the second moving rod are symmetrically arranged relative to the annular member; the first moving rod is slidably connected to the support block.

7. The VOCs waste gas emission reduction and energy-saving equipment according to claim 1 is characterized in that: A mounting column is installed on the outside of the adsorption box and below the motor; bevel gear 1, bevel gear 2 and a connecting rod are installed inside the mounting column, wherein bevel gear 1 is fixedly connected to the output end of the motor, bevel gear 1 is meshed with bevel gear 2, and bevel gear 2 is fixedly connected to one end of the connecting rod; synchronous wheel 1, synchronous wheel 2 and a rotating rod are installed outside the mounting column, wherein the other end of the connecting rod is fixedly connected to synchronous wheel 1, synchronous wheel 1 and synchronous wheel 2 are rotatably connected, and the rotating rod is fixedly connected to synchronous wheel 2 and the turntable.

8. The VOCs waste gas emission reduction and energy-saving equipment according to claim 7 is characterized in that: The synchronous wheel 1 and the synchronous wheel 2 are rotationally connected via a belt.

9. The VOCs waste gas emission reduction and energy-saving equipment according to claim 1, characterized in that: A water tank is installed outside the adsorption box; a heating rod is arranged inside the water tank; a steam pipe is installed between the water tank and the second area; and an exhaust fan is installed outside the second area.

10. The VOCs waste gas emission reduction and energy-saving equipment according to claim 1, characterized in that: The delivery assembly comprises a delivery pipe and a water pump connected to the delivery pipe; the delivery pipe is located outside the adsorption box and one end of the delivery pipe is connected to the top of the stirring box, and the other end is connected to the bottom of the second area.

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