Activated carbon flue gas purification and regeneration device and purification and regeneration method

Abstract

The invention discloses an activated carbon flue gas purification and regeneration device and a purification and regeneration method, and mainly aims to improve the operation convenience of activated carbon regeneration and reduce energy consumption. According to the main technical scheme, the activated carbon flue gas purification and regeneration device comprises an adsorption bin, wherein the adsorption bin comprises a flue gas inlet and a flue gas outlet; the power supply assembly comprises a pulse power supply; the electric conduction and heat conduction assembly is arranged in the adsorption bin and located between the flue gas inlet and the flue gas outlet, the electric conduction and heat conduction assembly is electrically connected with the pulse power supply, and the pulse power supply is used for applying pulse current to the electric conduction and heat conduction assembly so that the electric conduction and heat conduction assembly can be heated; the activated carbon is arranged on the electric conduction and heat conduction assembly, and the electric conduction and heat conduction assembly is used for supplying heat to the activated carbon.

Description

Technical Field

[0001] The present invention relates to the technical field of activated carbon regeneration, and in particular, to an activated carbon flue gas purification and regeneration device and a purification and regeneration method thereof. Background Art

[0002] The removal efficiency of activated carbon for organic pollutants can reach more than 90%, and it is widely used in the fields of flue gas purification in industrial processes such as domestic waste incineration and metal smelting, and adsorption of volatile organic compounds. As the use time of activated carbon prolongs, its adsorption capacity gradually saturates, the adsorption effect decreases, and finally it needs to be replaced or regenerated.

[0003] Currently, the methods for regenerating waste activated carbon include chemical regeneration method, electrochemical regeneration method, biological regeneration method, ultrasonic-assisted regeneration method, thermal regeneration method, microwave regeneration method, etc. In industry, the thermal regeneration method is usually used for regenerating waste activated carbon, and it is usually an off-line operation. Generally, a combustion boiler is used for heating. By heating the waste activated carbon to a high temperature, the adsorbed substances are desorbed to achieve the regeneration of activated carbon. The operation is complex and the energy consumption is large. Summary of the Invention

[0004] In view of this, an embodiment of the present invention provides an activated carbon flue gas purification and regeneration device and a purification and regeneration method thereof, and the main purpose is to improve the operation convenience of activated carbon regeneration and reduce the energy consumption.

[0005] To achieve the above object, the present invention mainly provides the following technical solutions: On the one hand, an embodiment of the present invention provides an activated carbon flue gas purification and regeneration device, including: An adsorption chamber, the adsorption chamber includes a flue gas inlet and a flue gas outlet; A power supply assembly, the power supply assembly includes a pulsed power supply; A conductive and heat-conducting assembly, the conductive and heat-conducting assembly is disposed in the adsorption chamber and is located between the flue gas inlet and the flue gas outlet. The conductive and heat-conducting assembly is electrically connected to the pulsed power supply, and the pulsed power supply is used to apply a pulsed current to the conductive and heat-conducting assembly to heat up the conductive and heat-conducting assembly; Activated carbon, the activated carbon is disposed on the conductive and heat-conducting assembly, and the conductive and heat-conducting assembly is used to supply heat to the activated carbon.

[0006] Further, the conductive and heat-conducting assembly includes a bottom wall and a top wall, and side walls connecting the bottom wall and the top wall. The top wall, the bottom wall and the side walls enclose a containing space; The activated carbon is disposed in the containing space and is in contact with the bottom wall, the top wall and the side walls.

[0007] Further, the conductive and heat-conductive component further includes a plurality of transverse partitions and a plurality of longitudinal partitions, and the plurality of transverse partitions and the plurality of longitudinal partitions are arranged in a transverse and longitudinal cross pattern in the accommodation space and divide the accommodation space into a plurality of sub-spaces; The activated carbon is arranged in the plurality of sub-spaces, and the activated carbon is in contact with the bottom wall, the top wall, the side wall, the transverse partitions and the longitudinal partitions.

[0008] Further, the top wall, the bottom wall and the transverse partitions are mesh plates; or, A plurality of first through holes are formed in the top wall, the bottom wall and the transverse partitions. Further, the power supply component further includes a positive electrode, a negative electrode and a power switch, the power switch and the pulse power supply are connected in series between the positive electrode and the negative electrode, and the positive electrode and the negative electrode are electrically connected to the conductive and heat-conductive component.

[0009] Further, the activated carbon flue gas purification and regeneration device further includes: A cooling component, which is arranged in the adsorption chamber and is used to cool the chamber wall of the adsorption chamber.

[0010] Further, a water cooling channel is arranged in the chamber wall of the adsorption chamber; The cooling component includes a cooling water pump and a cooling water pipeline, the cooling water pump is arranged on the cooling water pipeline, and the cooling water pipeline is communicated with the water cooling channel.

[0011] Further, the activated carbon flue gas purification and regeneration device further includes: A vacuum component, the vacuum component includes a three-way valve, an air extraction pump, an inert gas chamber and a vacuum gauge, the first valve port of the three-way valve is communicated with the adsorption chamber through a connecting pipeline, the vacuum gauge is arranged on the connecting pipeline, the air extraction pump is communicated with the second valve port of the three-way valve, and the inert gas chamber is communicated with the third valve port of the three-way valve.

[0012] Further, a mounting plate is arranged in the adsorption chamber, the mounting plate is located between the flue gas inlet and the flue gas outlet, the mounting plate divides the internal space of the adsorption chamber into a first space and a second space, and a plurality of second through holes are formed in the mounting plate; The conductive and heat-conductive component is located in the first space and is arranged on the mounting plate; the second space is used for collecting ash in the flue gas; The adsorption chamber further includes a slag discharge port, and the slag discharge port is communicated with the second space.

[0013] On the other hand, an embodiment of the present invention provides a method for purifying and regenerating activated carbon flue gas, which is applied to the aforementioned activated carbon flue gas purification and regeneration device, and includes: S1. In response to a purification instruction, open the flue gas inlet and the flue gas outlet, and convey the flue gas to be purified to the adsorption chamber through the flue gas inlet, so that the flue gas to be purified passes through the activated carbon and is discharged through the flue gas outlet; S2. When the activated carbon is saturated in adsorption, close the flue gas inlet and the flue gas outlet; S3. Control the vacuum assembly of the activated carbon flue gas purification and regeneration device to evacuate the adsorption chamber until the vacuum degree of the adsorption chamber reaches a first preset vacuum degree; S4. Control the vacuum assembly to convey inert gas into the adsorption chamber until the vacuum degree of the adsorption chamber reaches a second preset vacuum degree; S5. Repeat S3 and S4 until the oxygen concentration in the adsorption chamber is lower than a preset concentration; S6. Control the pulse power supply to apply a pulse current to the conductive and heat-conducting component, so that the conductive and heat-conducting component supplies heat to the activated carbon.

[0014] By means of the above technical solution, the present invention has at least the following beneficial effects: In the activated carbon flue gas purification and regeneration device provided by the embodiment of the present invention, the flue gas to be purified can enter the adsorption chamber through the flue gas inlet of the adsorption chamber, and then be discharged through the flue gas outlet after being purified by the activated carbon, thereby realizing flue gas purification. After the activated carbon is saturated in adsorption, the pulse power supply of the power supply assembly can be started, so that the pulse power supply applies a pulse current to the conductive and heat-conducting component, so that the conductive and heat-conducting component supplies heat to the activated carbon, and the adsorbed pollutants are fully degraded, thereby realizing the on-line regeneration of the activated carbon, avoiding the steps of replacing the activated carbon and off-line regeneration, and the operation is simple and convenient. Moreover, the technical solution provided by the embodiment of the present invention applies a pulse current to the conductive and heat-conducting component through the pulse power supply, that is, adopts the pulse heating method to rapidly increase the temperature of the conductive and heat-conducting component, thereby heating the activated carbon arranged thereon, realizing the high-temperature cyclic regeneration of the activated carbon. The pulse heating method greatly reduces the energy consumption, saves energy and is environment-friendly.

[0015] In addition, in the activated carbon flue gas purification and regeneration device provided by the embodiment of the present invention, the conductive and heat-conducting component is electrically connected to the pulse power supply, that is, the fixed conductive and heat-conducting component is connected to the circuit, and a pulse current is applied to the conductive and heat-conducting component through the pulse power supply, so that the temperature of the conductive and heat-conducting component rises, thereby enabling the conductive and heat-conducting component to heat the activated carbon, rather than directly heating the activated carbon by connecting the activated carbon to the circuit. In this way, the influence of the resistance of the activated carbon itself on the heating effect can be avoided, thereby avoiding adjusting the electrothermal parameters, and further fixing the pulse heating parameters to improve the pulse heating effect. Description of the Drawings

[0016] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. Among them: Figure 1 It is a schematic structural diagram of an activated carbon flue gas purification and regeneration device provided by an embodiment of the present invention; Figure 2 It is a flowchart of an activated carbon flue gas purification and regeneration method provided by an embodiment of the present invention. Specific Embodiments

[0017] To make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the drawings in the preferred embodiments of the present invention. The following describes in detail some embodiments of the invention. Without conflict, the embodiments and features in the following embodiments can be combined with each other.

[0018] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0019] As Figure 1 shown, an embodiment of the present invention provides an activated carbon flue gas purification and regeneration device, including an adsorption chamber 1, the adsorption chamber 1 includes a flue gas inlet 11 and a flue gas outlet 12; a power supply assembly 2, the power supply assembly 2 includes a pulse power supply 21; a conductive and heat-conducting assembly 3, which is arranged in the adsorption chamber 1 and is located between the flue gas inlet 11 and the flue gas outlet 12, the conductive and heat-conducting assembly 3 is electrically connected to the pulse power supply 21, and the pulse power supply 21 is used to apply a pulsed current to the conductive and heat-conducting assembly 3 to heat up the conductive and heat-conducting assembly 3; activated carbon 4, which is arranged on the conductive and heat-conducting assembly 3, and the conductive and heat-conducting assembly 3 is used to supply heat to the activated carbon 4.

[0020] Among them, an inlet sealing valve can be arranged at the flue gas inlet 11, and an outlet sealing valve can be arranged at the flue gas outlet 12. When purifying the flue gas, the inlet sealing valve and the outlet sealing valve are opened so that the flue gas to be purified enters the adsorption chamber 1 through the flue gas inlet 11, and is discharged through the flue gas outlet 12 after being purified by the activated carbon 4, thereby realizing the purification of the flue gas. Specifically, a pump body can be arranged at the flue gas outlet 12 so that the flue gas to be purified enters the adsorption chamber 1 from the flue gas inlet 11 and is discharged from the flue gas outlet 12 after being purified by the activated carbon 4.

[0021] The activated carbon flue gas purification and regeneration device provided by the embodiment of the present invention allows the flue gas to be purified to enter the adsorption chamber 1 through the flue gas inlet 11 of the adsorption chamber 1, and then discharged through the flue gas outlet 12 after being purified by the activated carbon 4, thereby realizing flue gas purification. After the activated carbon 4 is saturated with adsorption, the pulse power supply 21 of the power supply assembly 2 can be started, so that the pulse power supply 21 applies a pulse current to the conductive and heat-conducting assembly 3, so that the conductive and heat-conducting assembly 3 heats the activated carbon 4, and the adsorbed pollutants are fully degraded, thereby realizing the on-line regeneration of the activated carbon 4, avoiding the steps of replacing the activated carbon 4 and off-line regeneration, and the operation is simple and convenient. Moreover, the technical solution provided by the embodiment of the present invention applies a pulse current to the conductive and heat-conducting assembly 3 through the pulse power supply 21, that is, the temperature of the conductive and heat-conducting assembly 3 is rapidly increased by means of pulse heating, so as to heat the activated carbon 4 arranged thereon, realizing the high-temperature cyclic regeneration of the activated carbon 4. The pulse heating method greatly reduces the energy consumption, saves energy and is environmentally friendly.

[0022] Although the activated carbon 4 has certain conductivity and can directly utilize the resistance heat generation of the activated carbon 4 itself through electric heating to raise the temperature of the activated carbon 4 for regeneration, however, the resistance properties of different activated carbon 4 are different. When the activated carbon 4 is connected to the circuit, its heating effect is greatly affected by the fluctuation of the resistance of the activated carbon 4 itself, and it is necessary to adjust the electric heating parameters to meet the heating effect. Moreover, the resistivity of the activated carbon 4 is usually relatively high. If a high voltage is applied for a long time in order to increase the temperature, it is easy to cause the activated carbon 4 to be burned out.

[0023] In the activated carbon flue gas purification and regeneration device provided by the embodiment of the present invention, the conductive and heat-conducting assembly 3 is electrically connected to the pulse power supply 21, that is, the fixed conductive and heat-conducting assembly 3 is connected to the circuit, and a pulse current is applied to the conductive and heat-conducting assembly 3 through the pulse power supply 21, so that the temperature of the conductive and heat-conducting assembly 3 is increased, and the conductive and heat-conducting assembly 3 heats the activated carbon 4, rather than connecting the activated carbon 4 to the circuit to directly heat the activated carbon 4. This can avoid the influence of the resistance of the activated carbon 4 itself on the heating effect, thereby avoiding the adjustment of the electric heating parameters, further fixing the pulse heating parameters, improving the pulse heating effect, and also avoiding the burning of the activated carbon 4.

[0024] In some embodiments, referring to Figure 1 , the conductive and heat-conducting assembly 3 may include a bottom wall 31 and a top wall 32, and a side wall 33 connecting the bottom wall 31 and the top wall 32. The top wall 32, the bottom wall 31 and the side wall 33 enclose an accommodation space; the activated carbon 4 is arranged in the accommodation space and is in contact with the bottom wall 31, the top wall 32 and the side wall 33.

[0025] That is to say, the conductive and heat-conducting assembly 3 as a whole can be a box structure, and the activated carbon 4 is placed in the conductive and heat-conducting assembly 3, which is convenient for the installation of the activated carbon 4, thereby facilitating the purification of the flue gas by the activated carbon 4 and the on-line regeneration of the activated carbon 4.

[0026] Among them, the activated carbon 4 is in contact with the bottom wall 31, the top wall 32 and the side wall 33 of the conductive and heat-conductive component 3, which can increase the contact area between the activated carbon 4 and the conductive and heat-conductive component 3, thereby improving the heat transfer efficiency from the conductive and heat-conductive component 3 to the activated carbon 4, and further improving the regeneration effect of the activated carbon 4.

[0027] Specifically, the top wall 32, the bottom wall 31 and the side wall 33 of the conductive and heat-conductive component 3 can all be made of graphite or other materials with high conductive and heat-resistant properties. The activated carbon 4 can be block honeycomb activated carbon 4 or granular activated carbon 4.

[0028] In some embodiments, referring to Figure 1 , the conductive and heat-conductive component 3 can further include a plurality of transverse partitions 34 and a plurality of longitudinal partitions 35. The plurality of transverse partitions 34 and the plurality of longitudinal partitions 35 are arranged horizontally and vertically in the accommodation space and divide the accommodation space into a plurality of sub-spaces; the activated carbon 4 is arranged in the plurality of sub-spaces, and the activated carbon 4 is in contact with the bottom wall 31, the top wall 32, the side wall 33, the transverse partitions 34 and the longitudinal partitions 35.

[0029] The activated carbon 4 is dispersedly arranged in the plurality of sub-spaces formed by the division of the plurality of transverse partitions 34 and the plurality of longitudinal partitions 35. On the one hand, the distribution of the activated carbon 4 in the conductive and heat-conductive component 3 is more uniform, improving the purification effect of the activated carbon 4 on the flue gas. On the other hand, the dispersed activated carbon 4 can be in full contact with the bottom wall 31, the top wall 32, the side wall 33, the transverse partitions 34 and the longitudinal partitions 35, further increasing the contact area between the activated carbon 4 and the conductive and heat-conductive component 3, thereby further improving the heat transfer efficiency from the conductive and heat-conductive component 3 to the activated carbon 4, and then more efficiently degrading the pollutants adsorbed by the activated carbon 4, further improving the regeneration effect of the activated carbon 4, and better avoiding subsequent secondary pollution.

[0030] Specifically, the transverse partitions 34 and the longitudinal partitions 35 can be made of graphite or other materials with high conductive and heat-resistant properties.

[0031] As mentioned above, the conductive and heat-conductive component 3 is located between the flue gas inlet 11 and the flue gas outlet 12 of the adsorption chamber 1. Specifically, the bottom wall 31 can be close to the flue gas inlet 11, and the top wall 32 can be close to the flue gas outlet 12. When purifying the flue gas, the flue gas to be purified enters the adsorption chamber 1 through the flue gas inlet 11 and can successively pass through the bottom wall 31, the plurality of transverse partitions 34 and the top wall 32, and then is discharged from the flue gas outlet 12 after being purified by the activated carbon 4.

[0032] In some embodiments, the top wall 32, the bottom wall 31, and the transverse partition 34 may be mesh plates; alternatively, a plurality of first through holes may be formed in the top wall 32, the bottom wall 31, and the transverse partition 34. That is to say, the top wall 32, the bottom wall 31, and the transverse partition 34 may be mesh plates or perforated plates, so as to facilitate the flue gas to pass through the bottom wall 31, the transverse partition 34, and the top wall 32 and be purified by the activated carbon 4.

[0033] It can be understood that the mesh size of the mesh plate or the opening size on the top wall 32, the bottom wall 31, and the transverse partition 34 may be smaller than the size of the activated carbon 4 particles, so as to prevent the activated carbon 4 particles from leaking through the mesh holes or through holes, thereby facilitating the installation of the activated carbon 4 on the electroconductive and heat-conductive component 3.

[0034] In some embodiments, referring to Figure 1 , the power supply assembly 2 may further include a positive electrode 22, a negative electrode 23, and a power switch 24. The power switch 24 and the pulse power supply 21 are connected in series between the positive electrode 22 and the negative electrode 23, and the positive electrode 22 and the negative electrode 23 are electrically connected to the electroconductive and heat-conductive component 3.

[0035] Among them, the pulse power supply 21 may be a DC power supply. The positive electrode 22 and the negative electrode 23 may be electrically connected to the top wall 32 of the electroconductive and heat-conductive component 3. After the activated carbon 4 is saturated in adsorption, after setting parameters such as the current range, voltage range, opening and closing time, and opening and closing times of the pulse power supply 21, the power switch 24 can be turned on so that the pulse power supply 21 applies a pulse current to the electroconductive and heat-conductive component 3. Specifically, the positive electrode 22 and the negative electrode 23 may be made of heat-resistant and electrically conductive materials such as graphite or copper.

[0036] In some embodiments, referring to Figure 1 , the activated carbon flue gas purification and regeneration device may further include a cooling assembly 5. The cooling assembly 5 is arranged in the adsorption chamber 1 and is used to cool the adsorption chamber 1.

[0037] When the pulse power supply 21 applies a pulse current to the electroconductive and heat-conductive component 3, the temperature of the electroconductive and heat-conductive component 3 will rise rapidly. Therefore, the temperature of the wall of the adsorption chamber 1 also rises accordingly. In the above embodiments, by arranging the cooling assembly 5, the cooling assembly 5 cools the adsorption chamber 1, preventing the temperature of the wall of the adsorption chamber 1 from being too high, thereby avoiding scalding accidents and improving the operation safety of the activated carbon flue gas purification and regeneration device.

[0038] In some embodiments, referring to Figure 1 , a water cooling channel 13 is arranged inside the wall of the adsorption chamber 1; the cooling assembly 5 may include a cooling water pump 51 and a cooling water pipeline 52. The cooling water pump 51 is arranged on the cooling water pipeline 52, and the cooling water pipeline 52 is communicated with the water cooling channel 13.

[0039] Among them, both the water inlet and the water outlet of the water-cooled channel 13 can be communicated with the cooling water tank. The cooling water pump 51 serves as a power source to pump the cooling water from the cooling water tank into the water-cooled channel 13 and the cooling water pipeline 52 through the water inlet. The cooling water flows in the water-cooled channel 13 and the cooling water pipeline 52, fully absorbs the heat conducted by the bin wall, and the heated hot water can be discharged from the water outlet and returned to the cooling water tank, thus forming a closed-loop circulating cooling to ensure that the temperature of the bin wall of the adsorption bin 1 will not rise. Specifically, a temperature sensor can be arranged on the bin wall of the adsorption bin 1 to detect the temperature of the bin wall. When the temperature of the bin wall reaches or exceeds the preset temperature, the cooling water pump 51 can be controlled to start, and cooling water is introduced into the water-cooled channel 13 to cool the bin wall.

[0040] Among them, the bin wall of the adsorption bin 1 can be made of Hastelloy, and moreover, the outside of the bin wall can be wrapped with an asbestos heat-insulating layer and a ceramic material insulating layer.

[0041] In some embodiments, referring to Figure 1 , the activated carbon flue gas purification and regeneration device may further include a vacuum assembly 6. The vacuum assembly 6 includes a three-way valve 61, a suction pump 62, an inert gas bin 63, and a vacuum gauge 64. The first valve port of the three-way valve 61 is communicated with the adsorption bin 1 through a connecting pipeline, and a vacuum gauge 64 is arranged on the connecting pipeline. The suction pump 62 is communicated with the second valve port of the three-way valve 61, and the inert gas bin 63 is communicated with the third valve port of the three-way valve 61.

[0042] After the activated carbon 4 is saturated in adsorption, the flue gas inlet 11 and the flue gas outlet 12 of the adsorption bin 1 can be closed. Specifically, the inlet sealing valve and the outlet sealing valve can be closed, and the working position of the three-way valve 61 is switched to the first working position so that the suction pump 62 is communicated with the adsorption bin 1, so that the suction pump 62 evacuates the adsorption bin 1. During this process, the vacuum degree in the adsorption bin 1 is obtained through the vacuum gauge 64. When the vacuum degree in the adsorption bin 1 reaches the first vacuum degree value, such as 0 Pa, the working position of the three-way valve 61 is switched to the second working position so that the inert gas bin 63 is communicated with the adsorption bin 1, so that an inert gas, such as nitrogen, is introduced into the adsorption bin 1. During this process, the vacuum degree in the adsorption bin 1 is obtained through the vacuum gauge 64. When the vacuum degree in the adsorption bin 1 reaches the second vacuum degree value, such as 101.325 kPa, the three-way valve 61 is switched to the first working position again, and the evacuation and ventilation are cycled several times to ensure that the oxygen in the adsorption bin 1 is emptied, so as to avoid burning of the activated carbon 4 due to high temperature during the regeneration process.

[0043] In some embodiments, referring to Figure 1, an installation plate 14 is arranged inside the adsorption chamber 1. The installation plate 14 is located between the flue gas inlet 11 and the flue gas outlet 12. The installation plate 14 divides the internal space of the adsorption chamber 1 into a first space and a second space 15. A plurality of second through holes are formed in the installation plate 14; the conductive and heat-conducting component 3 is located in the first space and is arranged on the installation plate 14; the second space 15 is used for collecting the ash in the flue gas; the adsorption chamber 1 further includes a slag discharge port 16, and the slag discharge port 16 communicates with the second space 15.

[0044] Among them, the installation plate 14 can be made of heat-resistant materials such as alloys. The conductive and heat-conducting component 3 is placed on the installation plate 14 and is in the first space. After the flue gas to be purified enters the adsorption chamber 1 through the flue gas inlet 11, it passes through the installation plate 14 and enters the activated carbon 4 inside the conductive and heat-conducting component 3. After being purified by the activated carbon 4, it is discharged through the flue gas outlet 12. The ash in the flue gas to be purified directly falls into the second space 15 for storage and can finally be discharged from the adsorption chamber 1 through the slag discharge port 16. Specifically, a slag discharge port sealing valve can be arranged at the slag discharge port 16.

[0045] In order to facilitate the maintenance of the activated carbon flue gas purification and regeneration device, in some embodiments, the adsorption chamber 1 can include a chamber body and a chamber plate covering the opening at the top of the chamber body. The chamber body and the chamber plate are detachably and sealingly connected, such as bolt connection. Moreover, a plurality of channels communicating with the adsorption chamber 1 are arranged on the chamber plate. Components such as the positive and negative electrodes and the connecting pipelines extend into the adsorption chamber 1 through the channels and the channels are sealed by heat-resistant silica gel sealing rings.

[0046] As Figure 2 shown, an embodiment of the present invention also provides an activated carbon flue gas purification and regeneration method, which is applied to the aforementioned activated carbon flue gas purification and regeneration device. The method includes: S1. In response to a purification instruction, open the flue gas inlet and the flue gas outlet, and transport the flue gas to be purified through the flue gas inlet to the adsorption chamber so that the flue gas to be purified passes through the activated carbon and is discharged through the flue gas outlet.

[0047] Among them, in response to the purification instruction, the slag discharge port sealing valve can be closed, and the inlet sealing valve and the outlet sealing valve can be opened so that the flue gas to be purified enters the adsorption chamber through the flue gas inlet and is discharged through the flue gas outlet after being purified by the activated carbon, thereby realizing the purification of the flue gas.

[0048] S2. When the activated carbon is saturated in adsorption, close the flue gas inlet and the flue gas outlet.

[0049] When it is detected that the concentration of pollutants at the flue gas outlet decreases to a preset range or increases, it can be determined that the activated carbon is saturated in adsorption. At this time, the inlet sealing valve, the outlet sealing valve and the slag discharge port sealing valve can be closed so that the adsorption chamber is in a sealed state.

[0050] S3. Control the vacuum component of the activated carbon flue gas purification and regeneration device to evacuate the adsorption chamber until the vacuum degree of the adsorption chamber reaches the first preset vacuum degree.

[0051] S4. Control the vacuum component to transport inert gas into the adsorption chamber until the vacuum degree of the adsorption chamber reaches the second preset vacuum degree.

[0052] S5. Repeat S3 and S4 until the oxygen concentration in the adsorption chamber is lower than the preset concentration.

[0053] After closing the inlet seal valve, outlet seal valve, and slag discharge port seal valve, the three-way valve can be controlled to switch to the first working position to connect the air extraction pump with the adsorption chamber, so that the air extraction pump evacuates the adsorption chamber. During this process, the vacuum degree in the adsorption chamber is obtained through a vacuum gauge. When the vacuum degree in the adsorption chamber reaches the first preset vacuum degree, such as 0 Pa, control the three-way valve to switch to the second working position to connect the inert gas chamber with the adsorption chamber, so as to introduce inert gas, such as nitrogen, into the adsorption chamber. During this process, the vacuum degree in the adsorption chamber is obtained through a vacuum gauge. When the vacuum degree in the adsorption chamber reaches the second preset vacuum degree, such as 101.325 kPa, control the three-way valve to switch to the first working position again, and cycle the air extraction and ventilation several times until the oxygen concentration in the adsorption chamber is lower than the preset concentration to ensure that the oxygen in the adsorption chamber is emptied, thus avoiding burning due to high temperature during the regeneration of activated carbon.

[0054] Specifically, the number of times of repeating S3 and S4 can be 1 to 5 times to control the vacuum degree in the adsorption chamber within the range of 0 to 101.325 kPa.

[0055] S6. Control the pulse power supply to apply a pulse current to the conductive and heat-conductive component to heat the activated carbon.

[0056] After the oxygen in the adsorption chamber is emptied, the three-way valve can be closed, and the pulse heating parameters can be set. Specifically, the current range, voltage range, on-off time, and on-off times of the pulse power supply can be set, and then the power switch is turned on to enable the pulse power supply to apply a pulse current to the conductive and heat-conductive component to realize the on-line regeneration of activated carbon. After the regeneration is completed, repeat step S1. Specifically, the current range of the pulse power supply can be 40 - 400 A, the voltage range can be 10 - 200 V, and the on-off time can be 50 - 5000 ms.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An activated carbon flue gas purification and regeneration device, characterized in that, Comprising: An adsorption chamber, the adsorption chamber including a flue gas inlet and a flue gas outlet; A power supply assembly, the power supply assembly including a pulse power supply; A conductive and heat-conductive assembly, the conductive and heat-conductive assembly being disposed within the adsorption chamber and located between the flue gas inlet and the flue gas outlet, the conductive and heat-conductive assembly being electrically connected to the pulse power supply, the pulse power supply being used to apply a pulse current to the conductive and heat-conductive assembly to cause the conductive and heat-conductive assembly to heat up; Activated carbon, the activated carbon being disposed on the conductive and heat-conductive assembly, the conductive and heat-conductive assembly being used to supply heat to the activated carbon.

2. The activated carbon flue gas purification and regeneration device according to claim 1, wherein The conductive and heat-conductive assembly includes a bottom wall and a top wall, and side walls connecting between the bottom wall and the top wall, the top wall, the bottom wall and the side walls enclosing an accommodation space; The activated carbon is disposed within the accommodation space and is in contact with the bottom wall, the top wall and the side walls.

3. The activated carbon flue gas purification and regeneration device according to claim 2, wherein The conductive and heat-conductive assembly further includes a plurality of transverse partitions and a plurality of longitudinal partitions, the plurality of transverse partitions and the plurality of longitudinal partitions being arranged horizontally and vertically within the accommodation space and separating the accommodation space into a plurality of sub-spaces; The activated carbon is disposed within the plurality of sub-spaces, and the activated carbon is in contact with the bottom wall, the top wall, the side walls, the transverse partitions and the longitudinal partitions.

4. The activated carbon flue gas purification and regeneration device according to claim 3, wherein The top wall, the bottom wall and the transverse partitions are mesh plates; or, A plurality of first through holes are formed in the top wall, the bottom wall and the transverse partitions.

5. The activated carbon flue gas purification and regeneration device according to claim 1, wherein The power supply assembly further includes a positive electrode, a negative electrode and a power switch, the power switch and the pulse power supply being connected in series between the positive electrode and the negative electrode, the positive electrode and the negative electrode being electrically connected to the conductive and heat-conductive assembly.

6. The activated carbon flue gas purification and regeneration device according to claim 1, wherein, Further comprising: A cooling assembly, the cooling assembly being disposed on the adsorption chamber for cooling the chamber wall of the adsorption chamber.

7. The activated carbon flue gas purification and regeneration device according to claim 6, wherein A water cooling channel is provided within the chamber wall of the adsorption chamber; The cooling assembly includes a cooling water pump and a cooling water pipeline, the cooling water pump being disposed on the cooling water pipeline, the cooling water pipeline being communicated with the water cooling channel.

8. The activated carbon flue gas purification and regeneration device according to claim 1, wherein Further comprising: A vacuum assembly, the vacuum assembly including a three-way valve, an air extraction pump, an inert gas chamber and a vacuum gauge, a first valve port of the three-way valve being communicated with the adsorption chamber through a connecting pipeline, the vacuum gauge being disposed on the connecting pipeline, the air extraction pump being communicated with a second valve port of the three-way valve, and the inert gas chamber being communicated with a third valve port of the three-way valve.

9. The activated carbon flue gas purification and regeneration device according to claim 1, wherein An installation plate is arranged in the adsorption chamber. The installation plate is located between the flue gas inlet and the flue gas outlet. The installation plate divides the internal space of the adsorption chamber into a first space and a second space. A plurality of second through holes are formed in the installation plate. The conductive and heat-conducting component is located in the first space and is arranged on the installation plate. The second space is used for collecting ash residues in the flue gas. The adsorption chamber further includes a slag discharge port, and the slag discharge port is communicated with the second space.

10. A method for purifying and regenerating activated carbon flue gas, which is applied to the activated carbon flue gas purification and regeneration device described in any one of claims 1 to 9, and is characterized in that, Including: S1. In response to the purification instruction, open the flue gas inlet and the flue gas outlet, and convey the flue gas to be purified to the adsorption chamber through the flue gas inlet, so that the flue gas to be purified passes through the activated carbon and is discharged through the flue gas outlet. S2. When the activated carbon is saturated in adsorption, close the flue gas inlet and the flue gas outlet. S3. Control the vacuum component of the activated carbon flue gas purification and regeneration device to evacuate the adsorption chamber until the vacuum degree of the adsorption chamber reaches a first preset vacuum degree. S4. Control the vacuum component to convey inert gas into the adsorption chamber until the vacuum degree of the adsorption chamber reaches a second preset vacuum degree. S5. Repeat S3 and S4 until the oxygen concentration in the adsorption chamber is lower than the preset concentration. S6. Control the pulse power supply to apply a pulse current to the conductive and heat-conducting component, so that the conductive and heat-conducting component supplies heat to the activated carbon.

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