An activated carbon online adsorption and desorption device

Abstract

The present invention proposes an activated carbon online adsorption and desorption device, comprising at least two device modules, wherein a single device module comprises an activated carbon bed chamber, an upper air chamber and a lower air chamber, wherein an adsorption air duct and a desorption air duct are arranged in the upper air chamber and the lower air chamber respectively, wherein the adsorption air duct and the desorption air duct are not connected, and a cavity structure is arranged in the middle; the cavity structure is connected to the activated carbon bed chamber, and the upper air chamber and the lower air chamber of the same device module are connected to the activated carbon bed chamber through the cavity structure, and the upper air chamber and the lower air chamber of adjacent device modules are connected through corresponding air ducts; wind tunnels are arranged on the inner and outer walls of the adsorption air duct and the desorption air duct respectively, and push-pull type lifting valves are arranged between the adsorption air duct wind tunnels and the desorption air duct wind tunnels, and the air duct is controlled to be connected to the cavity structure through the push-pull type lifting valve, and the adsorption and desorption functions are completed in cooperation with the activated carbon bed chamber. The present invention has stable pressure, fast switching speed, low leakage rate, small space occupation, and low equipment cost.

Description

Technical Field

[0001] The invention belongs to the technical field of industrial waste gas treatment, and specifically relates to an activated carbon online adsorption and desorption device. Background Art

[0002] Activated carbon is made from carbon-containing materials such as coal, wood, fruit shells, coconut shells, walnut shells, apricot shells, and jujube shells, which are converted by pyrolysis at high temperature and a certain pressure. It has the advantages of high specific surface area, strong adsorption capacity, and long service life. Using activated carbon as an adsorbent can achieve a high removal rate of organic matter in exhaust gas and a long adsorption saturation cycle. The traditional activated carbon adsorption / desorption device is to set a butterfly valve on the pipeline in front of the activated carbon box, and switch the butterfly valve to achieve the switching of the activated carbon adsorption and desorption conditions.

[0003] A butterfly valve is installed on the pipe in front of the activated carbon box to switch the adsorption and desorption conditions. First, it takes up a large space and the external valve structure leads to a complex space layout; second, the butterfly valve has a high leakage rate; third, the external pipe and valve increase the production cost and are not beautiful. Summary of the invention

[0004] The purpose of the present invention is to provide an activated carbon online adsorption and desorption device.

[0005] The technical solution to achieve the purpose of the present invention is: an activated carbon online adsorption and desorption device, comprising at least two device modules, a single device module comprising an activated carbon bed chamber, an upper air chamber and a lower air chamber, the upper air chamber, the activated carbon bed chamber and the lower air chamber are sequentially connected from top to bottom, and the three are interconnected;

[0006] Two parallel air ducts, namely an adsorption air duct and a desorption air duct, are arranged in the upper air chamber and the lower air chamber respectively. The adsorption air duct and the desorption air duct are not connected, and a cavity structure is arranged in the middle;

[0007] The cavity structure is connected to the activated carbon bed chamber body, the upper air chamber and the lower air chamber of the same device module are connected to the activated carbon bed chamber body through the cavity structure, and the upper air chamber and the lower air chamber of adjacent device modules are connected through corresponding air ducts;

[0008] The first wind tunnels are respectively arranged on the inner and outer walls of the adsorption air duct, and the two first wind tunnels overlap in the horizontal direction, and a push-pull lift valve is arranged between them, and the adsorption air duct is controlled to be connected with the cavity structure through the push-pull lift valve, so as to cooperate with the activated carbon bed chamber to complete the adsorption function;

[0009] Second wind tunnels are respectively arranged on the inner and outer walls of the desorption air duct, and the two second wind tunnels overlap in horizontal direction, and a push-pull lift valve is arranged between them. The push-pull lift valve is used to control the connection between the desorption air duct and the cavity structure, and the desorption function is completed in cooperation with the activated carbon bed chamber.

[0010] Furthermore, the single device module is a rectangular parallelepiped structure.

[0011] Furthermore, the activated carbon bed chamber is filled with granular activated carbon and / or honeycomb activated carbon.

[0012] Furthermore, a high-strength grid is provided at the bottom of the activated carbon bed chamber to support the activated carbon loaded therein.

[0013] Furthermore, the activated carbon bed chamber body is connected to the upper wind chamber and the lower wind chamber through a flange.

[0014] Furthermore, flange docking interfaces are respectively provided at both ends of the adsorption air duct and the desorption air duct.

[0015] Furthermore, an operating port is provided on the activated carbon bed chamber body for replacing, repairing and checking the status of the activated carbon.

[0016] Furthermore, an inspection platform is provided at the operation port.

[0017] An activated carbon online adsorption and desorption method is provided, wherein the adsorption and desorption operation is performed based on the device, and the desorbed gas and the adsorbed gas do not interfere with each other. The specific steps are as follows:

[0018] For the device module that performs adsorption, the push-pull lift valves of all adsorption air ducts are opened at the same time, and the push-pull lift valves of all desorption air ducts are closed. After the waste gas to be treated enters the device from the adsorption air duct of an upper air chamber, it flows in the interconnected adsorption air ducts and enters the respective activated carbon bed chambers through the corresponding cavity structures. After being adsorbed by the activated carbon, it enters the adsorption air duct of the lower air chamber and is discharged to the subsequent chimney after being collected;

[0019] For the device modules that need desorption, close the push-pull lift valves of all adsorption air ducts at the same time, and open the push-pull lift valves of all desorption air ducts. After the desorption gas enters the device from the desorption air duct of an upper air chamber, it flows in the interconnected desorption air ducts and enters the respective activated carbon bed chambers through the corresponding cavity structures. After the activated carbon is desorbed, it enters the desorption air duct of the lower air chamber and is discharged to the subsequent treatment device after being collected.

[0020] Compared with the prior art, the present invention has the following significant advantages: 1) the adsorption pipeline, desorption pipeline and switching valve are integrated in the activated carbon box to optimize the spatial layout and reduce space occupancy; 2) a push-pull lift valve is introduced in the integrated box to replace the butterfly valve on the original pipeline, which has a fast switching speed, reduces the leakage rate and improves safety and reliability; 3) the adsorption pipeline, desorption pipeline and switching valve are integrated in the activated carbon box, which saves the number of pipelines and efficiently utilizes the space above and below the activated carbon bed to save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a structural schematic diagram of the activated carbon online adsorption and desorption device of the present invention.

[0022] Figure 2 It is a schematic diagram of the wind chamber of the activated carbon online adsorption and desorption device of the present invention.

[0023] Figure 3 It is a schematic diagram of the connecting pipeline of the activated carbon online adsorption and desorption device of the present invention.

[0024] In the figure: 1 single device module, 2 activated carbon bed chamber, 3 upper wind chamber, 4 lower wind chamber, 5 adsorption air duct, 6 desorption air duct, 7 and 8 wind tunnels, 9 operation port, 10 cavity. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0026] like Figure 1~Figure 3 As shown, an activated carbon online adsorption and desorption device includes at least two device modules 1. A single device module 1 includes an activated carbon bed chamber body 2, an upper wind chamber 3, and a lower wind chamber 4. The upper and lower ends of the activated carbon bed chamber body 2 are respectively connected to the upper wind chamber 3 and the lower wind chamber 4 by flanges or other connection methods, and the three are connected. Two parallel air ducts, namely adsorption air duct 5 and desorption air duct 6, are arranged in the front and back of the upper air chamber 3 and the lower air chamber 4, and the air duct openings are located at both ends of the air duct; two first air tunnels 7 overlapping in the horizontal direction are arranged on the inner wall and the outer wall of the adsorption air duct 5, and a push-pull lift valve is arranged between the first air tunnels 7 of the inner and outer walls, and two second air tunnels 8 overlapping in the horizontal direction are arranged on the inner wall and the outer wall of the desorption air duct 6, and a push-pull lift valve is arranged between the second air tunnels 8 of the inner and outer walls; there is a cavity structure 10 between the adsorption air duct 5 and the desorption air duct 6, so that the adsorption air duct 5 and the desorption air duct 6 are isolated from each other, ensuring that the adsorption air duct 5 and the desorption air duct 6 are not connected, and the cavity structure is connected with the activated carbon bed chamber 2. The device module 1 does not limit the number of combinations, but in order to meet the function of online adsorption / desorption, at least two device modules 1 should be combined, which is adjusted according to the total air volume that needs to be processed. The corresponding air ducts of adjacent device modules 1 are connected by flanges or other methods to ensure that each module is connected.

[0027] Taking the process of one absorption and one desorption as an example, two device modules are connected. When the waste gas passes through the device, the activated carbon absorbs the organic matter in the waste gas. Figure 3As shown, the waste gas to be treated enters the device through the adsorption air duct 5 of an upper air chamber 3, flows in the adsorption air duct 5, enters the activated carbon bed chamber 2 of the device module performing adsorption through the corresponding cavity structure 10, and after being adsorbed by the activated carbon, enters the adsorption air duct 5 of the lower air chamber 4, flows in the adsorption air duct 5, and is discharged to the subsequent chimney. When the device is used to desorb pollutants accumulated on the activated carbon, as shown in FIG. Figure 3 As shown, the desorbed gas enters the device from the desorption duct 6 side of an upper air chamber 3, flows in the desorption duct 6, enters the activated carbon bed chamber 2 of the device module performing desorption through the corresponding cavity structure 10, desorbs the activated carbon, and then enters the desorption duct 6 of the lower air chamber 4, flows in the desorption duct 6, and is discharged to the subsequent treatment device. The inlet and outlet of the exhaust gas and the adsorber need to be adjusted according to the specific application scenario.

[0028] Take the adsorption of the left device module and the desorption of the right device module as an example. Adsorption and desorption are carried out simultaneously. The left device module is adsorbing, and the upper and lower adsorption air duct lifting valves are opened at the same time, and the upper and lower desorption air duct lifting valves are closed. The right device module is desorbing, and the upper and lower adsorption air duct lifting valves are closed at the same time, and the upper and lower desorption air duct lifting valves are opened. In this way, the desorbed gas and the adsorbed gas do not interfere with each other, and adsorption and desorption are carried out in the two device modules respectively.

[0029] As a specific implementation, an operation port 9 is provided on the activated carbon bed chamber body 2. The operation port 9 is centered and closely attached to the upper edge of the activated carbon bed chamber body 2, and is used for replacement, maintenance and status checking of the activated carbon.

[0030] As a more specific implementation method, the type of the operation port 9 is variable and should be adjusted according to the type of activated carbon and the actual equipment size. The overall type of the operation port 9 should be based on the principle of convenient replacement of activated carbon, and a maintenance platform can be set near the operation port 9.

[0031] As a specific implementation, the activated carbon form can be adjusted inside the activated carbon bed chamber 2, or filled with granular activated carbon, or filled with honeycomb activated carbon. Further preferably, a high-strength grid is provided at the bottom of the activated carbon bed chamber 2 to support the activated carbon filled therein.

[0032] As a specific implementation method, the height dimensions of the upper air chamber 3 and the lower air chamber 4 should be adjusted according to the dimensions of the adsorption air duct 5 and the desorption air duct 6, and the dimensions of the adsorption air duct 5 and the desorption air duct 6 need to be determined according to the actual adsorption air volume and the desorption air volume.

[0033] As a specific implementation method, the wind tunnel sizes on the adsorption air duct 5 and the desorption air duct 6 should match the size of the push-pull lift valve. Each upper air chamber 3 of the device module 1 is equipped with 1 desorption lift valve and 1 adsorption lift valve, and each lower air chamber 4 of the device module 1 is also equipped with 1 desorption lift valve and 1 adsorption lift valve.

[0034] The present invention also proposes an online adsorption and desorption method for activated carbon, wherein the adsorption and desorption operation is performed based on the device, and the desorbed gas and the adsorbed gas do not interfere with each other. The specific steps are as follows:

[0035] For the device module that performs adsorption, the push-pull lift valves of all adsorption air ducts are opened at the same time, and the push-pull lift valves of all desorption air ducts are closed. After the waste gas to be treated enters the device from the adsorption air duct of an upper air chamber, it flows in the interconnected adsorption air ducts and enters the respective activated carbon bed chambers through the corresponding cavity structures. After being adsorbed by the activated carbon, it enters the adsorption air duct of the lower air chamber and is discharged to the subsequent chimney after being collected;

[0036] For the device modules that need desorption, close the push-pull lift valves of all adsorption air ducts at the same time, and open the push-pull lift valves of all desorption air ducts. After the desorption gas enters the device from the desorption air duct of an upper air chamber, it flows in the interconnected desorption air ducts and enters the respective activated carbon bed chambers through the corresponding cavity structures. After the activated carbon is desorbed, it enters the desorption air duct of the lower air chamber and is discharged to the subsequent treatment device after being collected.

[0037] The technical features of the above embodiments may 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.

[0038] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. An activated carbon online adsorption and desorption device, characterized in that: The device comprises at least two device modules (1), wherein a single device module (1) comprises an activated carbon bed chamber (2), an upper air chamber (3) and a lower air chamber (4), wherein the upper air chamber (3), the activated carbon bed chamber (2) and the lower air chamber (4) are sequentially connected from top to bottom and are interconnected; Two parallel air ducts, namely an adsorption air duct (5) and a desorption air duct (6), are arranged in the upper air chamber (3) and the lower air chamber (4), respectively; the adsorption air duct (5) and the desorption air duct (6) are not connected, and a cavity structure (10) is arranged in between; The cavity structure (10) is in communication with the activated carbon bed chamber (2); the upper air chamber (3) and the lower air chamber (4) of the same device module (1) are in communication with the activated carbon bed chamber (2) via the cavity structure (10); the upper air chambers (3) of adjacent device modules are in communication with each other via a group of adsorption air ducts (5) and desorption air ducts (6); and the lower air chambers (4) of adjacent device modules are in communication with each other via the adsorption air ducts (5) and desorption air ducts (6); First wind tunnels (7) are respectively arranged on the inner and outer walls of the adsorption air duct (5); the two first wind tunnels (7) overlap in the horizontal direction, and a push-pull lift valve is arranged between them. The push-pull lift valve controls the adsorption air duct (5) to communicate with the cavity structure (10), thereby cooperating with the activated carbon bed chamber (2) to complete the adsorption function; Second wind tunnels (8) are respectively arranged on the inner and outer walls of the desorption air duct (6); the two second wind tunnels (8) overlap in the horizontal direction, and a push-pull type lifting valve is arranged between them; the push-pull type lifting valve is used to control the communication between the desorption air duct (6) and the cavity structure (10), thereby cooperating with the activated carbon bed chamber (2) to complete the desorption function.

2. The activated carbon online adsorption and desorption device according to claim 1, characterized in that: The single device module (1) is a rectangular parallelepiped structure.

3. The activated carbon online adsorption and desorption device according to claim 1, characterized in that: The activated carbon bed chamber (2) is filled with granular activated carbon and / or honeycomb activated carbon.

4. The activated carbon online adsorption and desorption device according to claim 1 or 3, characterized in that: A high-strength grid is arranged at the bottom of the activated carbon bed chamber (2) to support the activated carbon filled therein.

5. The activated carbon online adsorption and desorption device according to claim 1, characterized in that: The activated carbon bed chamber body (2) is connected to the upper wind chamber (3) and the lower wind chamber (4) via flanges.

6. The activated carbon online adsorption and desorption device according to claim 1, characterized in that: Flange docking interfaces are respectively provided at both ends of the adsorption air duct (5) and the desorption air duct (6).

7. The activated carbon online adsorption and desorption device according to claim 1, characterized in that: The activated carbon bed chamber body (2) is provided with an operation port (9) for replacing, repairing and checking the status of the activated carbon.

8. The activated carbon online adsorption and desorption device according to claim 7, characterized in that: An inspection platform is provided at the operation opening (9).

9. An activated carbon online adsorption and desorption method, characterized in that: The adsorption and desorption operation is performed based on the device according to any one of claims 1 to 8, and the desorbed gas and the adsorbed gas do not interfere with each other. The specific steps are as follows: For the device module (1) performing adsorption, the push-pull lift valves of all adsorption air ducts (5) are opened at the same time, and the push-pull lift valves of all desorption air ducts (6) are closed. After the waste gas to be treated enters the device through the adsorption air duct (5) of an upper air chamber (3), it flows in the interconnected adsorption air ducts (5) and enters the respective activated carbon bed chambers (2) through the corresponding cavity structures (10). After being adsorbed by the activated carbon, it enters the adsorption air duct (5) of the lower air chamber (4) and is discharged to the subsequent chimney after being collected; For the device module (1) that requires desorption, the push-pull lift valves of all adsorption air ducts (5) are closed at the same time, and the push-pull lift valves of all desorption air ducts (6) are opened. After the desorption gas enters the device from the desorption air duct (6) of an upper air chamber (3), it flows in the interconnected desorption air ducts (6) and enters the respective activated carbon bed chambers (2) through the corresponding cavity structures (10). After the activated carbon is desorbed, it enters the desorption air duct (6) of the lower air chamber (4) and is discharged to a subsequent treatment device after being collected.

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