Activated carbon box capable of simultaneously removing sulfur and VOCs (Volatile Organic Compounds)

Abstract

The invention discloses an activated carbon box capable of simultaneously removing sulfur and VOCs (Volatile Organic Compounds), which comprises a box body, a movable partition plate is arranged on the box wall in the middle of the box body, and the movable partition plate can divide the inner cavity of the box body into a VOCs removal cavity and a sulfur removal cavity; a desulfurization cavity is formed in the box body, a desulfurization agent groove is formed in the upper part in the desulfurization cavity, a first gas inlet mesh is formed in the groove bottom of the desulfurization agent groove, a waste gas outlet is formed in one side of the box body, and an explosion venting manhole and a desulfurization agent regeneration gas inlet are formed in the top wall of the box body; an activated carbon groove is formed in the upper portion in the VOCs removal cavity, second air inlet mesh holes are formed in the groove bottom of the activated carbon groove, an activated carbon pouring-in opening is formed in the top wall of the box body, an activated carbon guiding-in channel is formed in the bottom end of the activated carbon pouring-in opening, and an air inlet is formed in the other side of the box body. The invention belongs to the technical field of waste gas treatment, and solves the problems that two types of adsorbents are arranged in one box body and are not suitable for simultaneous regeneration and desorption in the prior art.

Description

Technical Field

[0001] The present application relates to the technical field of waste gas treatment, and in particular to an activated carbon box capable of simultaneously desulfurizing and removing VOCs. Background Art

[0002] At present, solid-state battery technology is developing rapidly, among which lithium sulfide solid-state batteries are the research direction of many manufacturers. In the production process of lithium sulfide solid-state batteries, the coating section of the previous process will volatilize gases containing hydrogen sulfide and organic solvents, which are highly toxic and corrosive. Therefore, it is necessary to set up a supporting exhaust gas treatment device to treat such gases and discharge them in a qualified manner. According to the current market product configuration, because the adsorption capacity of activated carbon for hydrogen sulfide is poor, it is necessary to add a desulfurizer to adsorb hydrogen sulfide separately. However, since the regeneration conditions of the desulfurizer are simple and dry air can be passed through for regeneration multiple times, while the regeneration conditions of activated carbon require high-temperature gas, the two types of adsorbents should not be desorbed at the same time. Therefore, during the design process, the activated carbon and desulfurizer will be separated and processed in two devices, resulting in a large equipment footprint. The fluid needs to be transported between the devices through pipelines, the transportation distance is long, and the energy loss is large. Summary of the Invention

[0003] In view of the above shortcomings, the purpose of the present invention is to provide an activated carbon box that can simultaneously desulfurize and remove VOCs, solving the problems of large occupied area and large energy loss of existing equipment.

[0004] To achieve the above objectives, the present invention provides an activated carbon box capable of simultaneously desulfurizing and removing VOCs, comprising a box body, wherein a movable partition plate is slidably mounted on a box wall in the middle of the box body, and the movable partition plate is capable of dividing the inner cavity of the box body into a VOC removal chamber located at the bottom and a desulfurization chamber located at the top; A desulfurizer tank is provided at the upper part of the desulfurization chamber, a first air inlet mesh is provided at the bottom of the desulfurizer tank, a desulfurizer pouring outlet connected to the bottom of the desulfurizer tank and an exhaust gas outlet connected to the top of the desulfurizer tank are provided on one side of the box body, and an explosion relief manhole connected to the desulfurizer tank and a desulfurizer regeneration gas inlet are provided on the top wall of the box body; An activated carbon tank is provided at the upper part of the VOCs removal chamber, a second air inlet mesh is provided at the bottom of the activated carbon tank, an activated carbon pouring inlet is provided on the top wall of the box body, an activated carbon pouring inlet is provided at the bottom end of the activated carbon pouring inlet, an activated carbon introduction channel is provided which is connected to the cavity below the desulfurizer tank, an activated carbon pouring outlet is provided on one side of the box body which is connected to the bottom of the activated carbon tank, and an air inlet is provided on the other side of the box body which is connected to the cavity below the activated carbon tank.

[0005] As a preferred technical solution of the present invention, a desulfurizer regeneration gas outlet is provided on the other side of the box body and is connected to the cavity below the desulfurizer tank.

[0006] As a preferred technical solution of the present invention, the activated carbon inlet channel includes a first stainless steel plate, the two ends of the first stainless steel plate are fixedly connected to the cavity walls and top walls at both ends of the desulfurization chamber, and the first stainless steel plate and the cavity walls on one side of the desulfurization chamber and the cavity walls at both ends form the activated carbon inlet channel.

[0007] As a preferred technical solution of the present invention, a first stainless steel wire mesh is provided at the bottom of the desulfurizer tank, and the four sides of the first stainless steel wire mesh are fixedly connected to the bottom end of the first stainless steel plate and the three cavity walls of the desulfurization cavity respectively.

[0008] As a preferred technical solution of the present invention, a second stainless steel wire mesh is provided at the bottom of the activated carbon tank, and the four sides of the second stainless steel wire mesh are respectively connected to the four cavity walls of the VOCs removal cavity; the first stainless steel wire mesh and the second stainless steel wire mesh are arranged at an angle.

[0009] As a preferred technical solution of the present invention, the inner end of the air inlet is provided with an air inlet cylinder extending to the VOCs removal chamber, the inner end of the air inlet cylinder is closed and the bottom cylinder wall thereof is provided with an air outlet.

[0010] As a preferred technical solution of the present invention, the bottom end of the box body is provided with a drain port connected to the bottom of the VOCs removal chamber.

[0011] As a preferred technical solution of the present invention, a temperature transmitter is provided above the desulfurizer tank, and a spray pipe with an automatic control valve is provided above the desulfurizer tank, one end of the spray pipe is bent upward and passed through the top wall of the box.

[0012] As a preferred technical solution of the present invention, guide grooves are provided on the four box walls in the middle of the box body, and a socket connected to the guide grooves is provided on the box wall on one side of the box body. The movable partition plate can be inserted into the guide grooves from the sockets, and the upper and lower groove walls of the guide grooves are adapted to the upper and lower surfaces of the movable partition plate.

[0013] As a preferred technical solution of the present invention, the four edges of the movable partition plate are provided with rubber sealing strips adapted to the upper and lower groove walls of the guide chute.

[0014] Compared with the existing technology, the present invention has the following beneficial effects: (1) The activated carbon box of the present invention can simultaneously desulfurize and remove VOCs. The activated carbon tank and the desulfurizer tank are integrated in the same box. The activated carbon and the desulfurizer are used to absorb the volatile organic compounds and hydrogen sulfide in the exhaust gas in sequence. The activated carbon and the desulfurizer can also be regenerated at the same time. It has good integration, compact structure, small space occupation, and is easy to layout. In addition, it reduces the layout of pipelines, reduces equipment costs and reduces energy loss. (2) The activated carbon box of the present invention that can desulfurize and remove VOCs at the same time can desulfurize and remove VOCs from the waste gas, and the box body is divided into two chambers by a movable partition plate, and the activated carbon and desulfurizer in the two chambers are regenerated without affecting each other. There is no need to separate the activated carbon and the desulfurizer into two separate devices for treatment. The work of treating volatile organic compounds and sulfur-containing gases in the waste gas can be completed in the same box, and two types of adsorbents can also be regenerated in one device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0016] Figure 1 This is a schematic structural diagram of an activated carbon box capable of simultaneously desulfurizing and removing VOCs according to the present invention; Figure 2 This is an enlarged top view of the structure of the movable partition board, box body and guide chute combination in the present invention; Figure 3 It is an enlarged cross-sectional view of the structure of the movable partition board, box body and guide slide groove combination in the present invention.

[0017] Explanation of the accompanying symbols: 100, box body; 1, desulfurizer regeneration gas inlet; 2, temperature transmitter; 3, explosion vent manhole; 4, spray pipe; 5, activated carbon pouring inlet; 6, desulfurizer regeneration gas outlet; 7, air inlet; 8, drain outlet; 9, activated carbon pouring outlet; 10, movable partition plate; 11, desulfurizer pouring outlet; 12, exhaust gas outlet; 13, first stainless steel wire mesh; 14, first stainless steel plate; 15, second stainless steel wire mesh; 16, activated carbon tank; 17, desulfurizer tank; 18, activated carbon inlet channel; 19, air inlet cylinder; 20, air outlet; 21, guide slide; 22, socket; 23, rubber sealing strip. DETAILED DESCRIPTION

[0018] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0019] The following describes an embodiment of the present invention based on its overall structure.

[0020] Reference Figure 1-Figure 3 As shown, this embodiment provides an activated carbon box that can simultaneously desulfurize and remove VOCs, including a box body 100. A movable partition plate 10 is slidably inserted on the box wall in the middle of the box body 100. The movable partition plate 10 can separate the inner cavity of the box body 100 into a VOC removal chamber located at the lower part and a desulfurization chamber located at the upper part; the movable partition plate 10 can slide outward to connect the VOC removal chamber with the desulfurization chamber located at the upper part, and the movable partition plate 10 can also be inserted inward into the box body 100 to separate the VOC removal chamber from the desulfurization chamber; A desulfurizer tank 17 is provided at the upper part of the desulfurization chamber, and a first air inlet mesh is provided at the bottom of the desulfurizer tank 17. A desulfurizer pouring outlet 11 connected to the bottom of the desulfurizer tank 17 and an exhaust gas outlet 12 connected to the top of the desulfurizer tank 17 are provided on one side of the box body 100. An explosion-proof manhole 3 and a desulfurizer regeneration gas inlet 1 connected to the desulfurizer tank 17 are provided on the top wall of the box body 100. The desulfurizer regeneration gas inlet 1 is connected to the air compressor through a pipeline; the desulfurizer tank 17 is used to fill the desulfurizer, and the exhaust gas treated by the VOCs removal chamber below enters the desulfurization chamber. It can enter the desulfurizer tank 17 from the first air inlet mesh, desulfurize the exhaust gas with the desulfurizer, and then flow out from the exhaust gas outlet 12; the explosion-proof manhole 3 can be used to fill the desulfurizer and to repair the equipment, and can also be used as an overpressure explosion vent for pressure relief; An activated carbon tank 16 is provided at the upper part of the VOCs removal chamber, and a second air inlet mesh is provided at the bottom of the activated carbon tank 16. An activated carbon pouring port 5 is provided on the top wall of the box body 100, and an activated carbon introduction channel 18 is provided at the bottom end of the activated carbon pouring port 5, which is connected to the cavity below the desulfurizer tank 17. An activated carbon pouring port 9 is provided on one side of the box body 100, and an air inlet 7 is provided on the other side of the box body 100, which is connected to the cavity below the activated carbon tank 16. Activated carbon particles can be poured into the activated carbon pouring port 5, and the activated carbon can slide into the activated carbon tank 16 from the activated carbon introduction channel 18. The exhaust gas is input into the VOCs removal chamber from the air inlet 7, enters the activated carbon tank 16 through the second air inlet mesh, and then is effectively removed from the exhaust gas by the activated carbon in the activated carbon tank 16 by virtue of its unique adsorption properties.

[0021] The activated carbon box of the present invention, which can simultaneously desulfurize and remove VOCs, integrates the activated carbon tank 16 and the desulfurizer tank 17 in the same box body 100, and uses the activated carbon and the desulfurizer to sequentially absorb the volatile organic compound particles VOCs and hydrogen sulfide in the exhaust gas. It has good integration, a compact structure, and takes up little space, which is convenient for layout. In addition, it reduces the layout of pipelines, reduces equipment costs, and reduces energy loss. After the exhaust gas is treated, the VOCs removal chamber and the desulfurization chamber can be separated by a movable partition plate 10 to form two independent chambers. Then, compressed air is input from the desulfurizer regeneration gas inlet 1. The compressed air contacts the desulfurizer in the desulfurizer tank 17, oxidizing the sulfide in the desulfurizer into elemental sulfur or sulfate, thereby regenerating the desulfurizer. Then, the thermal regeneration method can be used to input high-temperature gas from the air inlet 7 into the VOCs removal chamber, and the adsorbed organic matter can be decomposed through reactions such as pyrolysis and oxidation to restore the pore structure of the activated carbon. The high-temperature gas after participating in the thermal regeneration can be discharged from the activated carbon inlet channel 18; the high-temperature gas will not enter the desulfurizer tank 17 to affect the regeneration of the desulfurizer, and the compressed air will not enter the activated carbon tank 16 to affect the regeneration of the activated carbon.

[0022] Reference Figure 1 and Figure 3 The other side of the box body 100 is provided with a desulfurizer regeneration gas outlet 6 which is connected to the cavity below the desulfurizer tank 17. The compressed air contacts the desulfurizer in the desulfurizer tank 17, and the desulfurizer is regenerated. The generated mixed gas can be discharged from the desulfurizer regeneration gas outlet 6 to the outside of the box body 100.

[0023] Reference Figure 1 and Figure 3The activated carbon introduction channel 18 includes a first stainless steel plate 14, and the two ends of the first stainless steel plate 14 are fixedly connected to the cavity wall and the top wall at both ends of the desulfurization chamber. The first stainless steel plate 14 and the cavity wall on one side of the desulfurization chamber and the cavity walls at both ends form the activated carbon introduction channel 18, that is, the first stainless steel plate 14 separates the upper part of the desulfurization chamber, one side belongs to the desulfurizer tank 17, and the other side is the activated carbon introduction channel 18. The activated carbon introduction channel 18 is connected to the area below the desulfurizer tank 17, so that the activated carbon particles can fall into the activated carbon tank 16 through the activated carbon introduction channel 18 on one side of the desulfurization chamber after pouring from the activated carbon inlet 5.

[0024] As a preferred technical solution of the present invention, a first stainless steel wire mesh 13 is provided at the bottom of the desulfurizer tank 17, and the four sides of the first stainless steel wire mesh 13 are fixedly connected to the bottom end of the first stainless steel plate 14 and the three cavity walls of the desulfurization cavity respectively.

[0025] Reference Figure 1 A second stainless steel wire mesh 15 is provided at the bottom of the activated carbon tank 16, and the four sides of the second stainless steel wire mesh 15 are respectively connected to the four cavity walls of the VOCs removal cavity; the first stainless steel wire mesh 13 and the second stainless steel wire mesh 15 are arranged at an angle, and the first stainless steel wire mesh 13 and the second stainless steel wire mesh 15 are arranged at an angle to facilitate the desulfurization agent and activated carbon particles to flow out of the box 100.

[0026] As a preferred technical solution of the present invention, the inner end of the air inlet 7 is provided with an air inlet cylinder 19 extending to the VOCs removal chamber. The inner end of the air inlet cylinder 19 is closed and an air outlet 20 is provided on the bottom cylinder wall.

[0027] Reference Figure 1 The bottom end of the box body 100 is provided with a drain port 8 connected to the bottom of the VOCs removal chamber. After the activated carbon is regenerated by high-temperature gas and high-temperature steam, the generated liquid can be discharged from the drain port 8.

[0028] Reference Figure 1 A temperature transmitter 2 is provided above the desulfurizer tank 17. A spray pipe 4 with an automatic control valve is provided above the desulfurizer tank 17. One end of the spray pipe 4 is bent upward and passed through the top wall of the box body 100. The temperature transmitter 2 is used to monitor the temperature in the desulfurizer tank 17 in real time, and controls the valve of the spray pipe 4 to open according to the monitored temperature data to spray water to cool the desulfurizer below to avoid the desulfurizer temperature being too high and catching fire. The generated liquid can be discharged from the drain port 8.

[0029] Reference Figure 3The four box walls in the middle of the box body 100 are provided with guide chutes 21, and the box wall on one side of the box body 100 is provided with a socket 22 connected to the guide chutes 21. The movable partition plate 10 can be inserted into the guide chutes 21 through the socket 22. The upper and lower groove walls of the guide chutes 21 are adapted to the upper and lower surfaces of the movable partition plate 10. The guide chutes 21 are two horizontal bars connected to the inner wall of the box body 100. The two horizontal bars are arranged in parallel. The guide chutes 21 can support and guide the movable partition plate 10 to ensure that the movable partition plate 10 can slide smoothly horizontally. Moreover, the guide chutes 21 can play the role of sealing the edges to prevent gas circulation between the desulfurization chamber and the VOCs removal chamber.

[0030] Furthermore, the four sides of the movable partition plate 10 are provided with rubber sealing strips 23 adapted to the upper and lower groove walls of the guide groove 21. The rubber sealing strips 23 are in close contact with the upper and lower groove walls of the guide groove 21 to prevent air leakage, thereby preventing gas from flowing between the desulfurization chamber and the VOCs removal chamber, and also preventing gas from leaking out from the socket 22.

[0031] When in use, the activated carbon tank 16 and the desulfurizer tank 17 are integrated in the same box 100, and the activated carbon and the desulfurizer are used to absorb the volatile organic compound particles VOCs and hydrogen sulfide in the exhaust gas in sequence; After the exhaust gas is treated, the VOCs removal chamber and the desulfurization chamber can be separated by a movable partition plate 10 to form two independent chambers. Then, compressed air is input from the desulfurizer regeneration gas inlet 1. The compressed air contacts the desulfurizer in the desulfurizer tank 17, oxidizing the sulfide in the desulfurizer into elemental sulfur or sulfate, thereby regenerating the desulfurizer. Then, the high-temperature gas is input into the VOCs removal chamber from the air inlet 7, and comes into contact with the activated carbon in the activated carbon tank 16. The adsorbed organic matter is decomposed through reactions such as pyrolysis and oxidation, and the pore structure of the activated carbon is restored. The high-temperature gas after participating in thermal regeneration can be discharged from the activated carbon inlet channel 18; the high-temperature gas will not enter the desulfurizer tank 17 to affect the regeneration of the desulfurizer, and the compressed air will not enter the activated carbon tank 16 to affect the regeneration of the activated carbon.

[0032] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] The above embodiments merely represent one or several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. An activated carbon box capable of simultaneously desulfurizing and removing VOCs, comprising a box body (100), characterized in that: A movable partition plate (10) is slidably mounted on the box wall in the middle of the box body (100), and the movable partition plate (10) is capable of dividing the inner cavity of the box body (100) into a VOCs removal cavity at the bottom and a desulfurization cavity at the top; A desulfurizer tank (17) is provided at the upper portion of the desulfurizer chamber, a first air inlet mesh is provided at the bottom of the desulfurizer tank (17), a desulfurizer pouring outlet (11) communicating with the bottom of the desulfurizer tank (17) and an exhaust gas outlet (12) communicating with the top of the desulfurizer tank (17) are provided on one side of the box body (100), and an explosion relief manhole (3) communicating with the desulfurizer tank (17) and a desulfurizer regeneration gas inlet (1) are provided on the top wall of the box body (100); An activated carbon tank (16) is provided at the upper portion of the VOCs removal chamber, a second air inlet mesh is provided at the bottom of the activated carbon tank (16), an activated carbon pouring inlet (5) is provided on the top wall of the box body (100), an activated carbon inlet (18) is provided at the bottom end of the activated carbon pouring inlet (5) and is connected to the cavity below the desulfurizer tank (17), an activated carbon pouring outlet (9) is provided on one side of the box body (100) and is connected to the bottom of the activated carbon tank (16), and an air inlet (7) is provided on the other side of the box body (100) and is connected to the cavity below the activated carbon tank (16).

2. The activated carbon box capable of simultaneously desulfurizing and removing VOCs according to claim 1, characterized in that: The other side of the box (100) is provided with a desulfurizer regeneration gas outlet (6) that is in communication with the cavity below the desulfurizer tank (17).

3. The activated carbon box capable of simultaneously desulfurizing and removing VOCs according to claim 1, characterized in that: The activated carbon inlet channel (18) includes a first stainless steel plate (14), the two ends of the first stainless steel plate (14) are fixedly connected to the cavity wall and the top wall at both ends of the desulfurization chamber, and the first stainless steel plate (14) and the cavity wall on one side and the cavity walls at both ends of the desulfurization chamber form the activated carbon inlet channel (18).

4. The activated carbon box capable of simultaneously desulfurizing and removing VOCs according to claim 3, characterized in that: A first stainless steel wire mesh (13) is provided at the bottom of the desulfurizing agent tank (17), and four sides of the first stainless steel wire mesh (13) are fixedly connected to the bottom end of the first stainless steel plate (14) and the three walls of the desulfurization chamber respectively.

5. The activated carbon box capable of simultaneously desulfurizing and removing VOCs according to claim 4, characterized in that: A second stainless steel wire mesh (15) is provided at the bottom of the activated carbon tank (16), and the four sides of the second stainless steel wire mesh (15) are respectively connected to the four cavity walls of the VOCs removal cavity; the first stainless steel wire mesh (13) and the second stainless steel wire mesh (15) are arranged obliquely.

6. The activated carbon box capable of simultaneously desulfurizing and removing VOCs according to claim 4, characterized in that: An air inlet cylinder (19) extending to the VOCs removal chamber is provided at the inner end of the air inlet (7); the inner end of the air inlet cylinder (19) is sealed and an air outlet (20) is provided on the bottom cylinder wall.

7. The activated carbon box capable of simultaneously desulfurizing and removing VOCs according to claim 4, characterized in that: The bottom end of the box body (100) is provided with a liquid drain port (8) that is in communication with the bottom of the VOCs removal chamber.

8. The activated carbon box capable of simultaneously desulfurizing and removing VOCs according to claim 7, characterized in that: A temperature transmitter (2) is provided above the desulfurizer tank (17), and a spray pipe (4) with an automatic control valve is provided above the desulfurizer tank (17). One end of the spray pipe (4) is bent upward and passed through the top wall of the box (100).

9. The activated carbon box capable of simultaneously desulfurizing and removing VOCs according to claim 7, characterized in that: The four box walls in the middle of the box body (100) are provided with guide slots (21), and the box wall on one side of the box body (100) is provided with a socket (22) connected to the guide slots (21). The movable partition plate (10) can be inserted into the guide slots (21) through the socket (22), and the upper and lower slot walls of the guide slots (21) are adapted to the upper and lower surfaces of the movable partition plate (10).

10. The activated carbon box capable of simultaneously desulfurizing and removing VOCs according to claim 9, characterized in that: The four sides of the movable partition plate (10) are provided with rubber sealing strips (23) adapted to the upper and lower groove walls of the guide chute (21).

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