Device and method for activating granular and powdery activated carbon

Abstract

The invention relates to the technical field of activated carbon activation and regeneration, and discloses a granular and powdery activated carbon activation device and method.The granular and powdery activated carbon activation device comprises a rotary kiln barrel activation device, the rotary kiln barrel activation device comprises a granular activated carbon feeding device, and a rotary kiln barrel is installed on the right side of the granular activated carbon feeding device. Activated carbon is activated through the rotary kiln device suitable for both powder and particles, activated waste gas enters RTO to be incinerated after being subjected to cooling, dust removal and alkali washing, meanwhile, RTO high-temperature flue gas is used for preheating activation furnace combustion-supporting air, the rotary kiln device suitable for both powder and particles is adopted, granulation of the powdery activated carbon is omitted, the production cost is reduced, and the production efficiency is improved. Or a boiling bed is adopted for activation, the equipment investment cost is reduced, RTO is adopted for tail gas treatment for incineration, the energy consumption is reduced, the operation cost and the investment cost are reduced, RTO high-temperature flue gas is used for preheating combustion-supporting air of the activation furnace, and the fuel consumption of the activation furnace is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of activated carbon activation and regeneration, and in particular relates to a device and method for activating granular and powdered activated carbon. Background Art

[0002] Activated carbon activation and regeneration is the main method to solve the problem of waste activated carbon. Activated carbon activation is divided into powdered activated carbon activation and granular activated carbon activation. Different furnace types are used for activation of different activated carbons. Half of the waste gas after activated carbon activation is secondary burned, and then goes through waste heat boiler, quench tower, dry reaction, bag filter, spray washing, etc. to ensure that the exhaust gas meets the emission standards.

[0003] For example, in the patent document: the case with publication number: CN111604040A, the activation of powdered activated carbon requires granulation of the powdered activated carbon and then regeneration in a rotary kiln, which increases the cost of granulation, changes the shape of the activated carbon, and affects the use after regeneration. For example, in the patent document: the case with publication number: CN200998665Y, it is only applicable to the activation of granular activated carbon. For example, in the patent document: the case with publication number: CN110817873A, two sets of equipment are used for treatment. A rotary kiln process is used for granular activated carbon, and a fluidized bed process is used for powdered activated carbon, which increases equipment investment. At the same time, secondary combustion chambers, waste heat boilers, quenching towers, dry reactions, bag filters, etc. are used in waste gas treatment, which increases equipment investment, energy consumption, and operating costs. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a granular and powdered activated carbon activation device and method that can overcome the above problems or at least partially solve the above problems.

[0005] The present invention is implemented as follows: a granular and powdered activated carbon activation device and method, comprising a rotary kiln cylinder activation device, which comprises a granular activated carbon feeding device, a rotary kiln cylinder is installed on the right side of the granular activated carbon feeding device, a steam inlet is fixedly connected to the left side of the rotary kiln cylinder, a burner is installed at the bottom of the left side of the rotary kiln cylinder, a kiln tail cover is sleeved on the right side of the rotary kiln cylinder, a discharger is installed at the bottom of the kiln tail cover, a kiln head cover is installed on the surface of the rotary kiln cylinder, and the powdered activated carbon inlet is installed on the surface of the rotary kiln cylinder; and,

[0006] It comprises an activated tail gas treatment device, which comprises a water-cooled dust collector, a bag dust collector is connected to the right side of the water-cooled dust collector, one end of the bag dust collector is connected to an alkali washing tower, and the right side of the alkali washing tower is fixedly connected to an induced draft fan; and,

[0007] It also includes an RTO device, which includes a flame arrester, an RTO device, an air preheater and a flue gas mixing tank; the flame arrester is installed on the left side of the RTO device, the air preheater is installed on the right side of the RTO device, and the flue gas mixing tank is installed on the right side of the air preheater.

[0008] Preferably, in the present invention, an air main pipe, an air supply valve, an air distribution hood and a thermocouple are installed on the rotary kiln cylinder, refractory materials and thermal insulation materials are installed inside the rotary kiln cylinder, air inlets are evenly distributed inside the rotary kiln cylinder, and a main air inlet is opened at the bottom of the rotary kiln cylinder.

[0009] Preferably, in the present invention, a sealing plate fixing device is installed at the air inlet, the sealing plate fixing device comprises a sleeve, a fixing rod and a second sealing plate are installed on the sleeve, and an adjusting nut is threadedly connected to the sleeve.

[0010] Preferably, in the present invention, a sealing packing is installed at the inlet of the air inlet, a first sealing plate is installed on one side of the sealing packing, the inlet of the air inlet is circular, and the outlet is rectangular.

[0011] Preferably, in the present invention, a blower is connected to one side of the flue gas mixing tank, a flue gas discharge port for use with the flue gas mixing tank is installed at the bottom of the air preheater, a discharger is provided at the bottom of the kiln tail hood, and a sealing cover is installed on the surface of the rotary kiln cylinder.

[0012] Preferably, in the present invention, the granular activated carbon is transported into the rotary kiln cylinder by a feeding device, saturated steam enters the rotary kiln cylinder through a steam inlet, and is ignited and activated by a burner. The rotary kiln cylinder is provided with a certain inclination angle, and the granular activated carbon tumbles forward in the rotary kiln cylinder. The organic matter in the activated carbon is volatilized, gasified, and pyrolyzed, and the generated tail gas is discharged through the tail gas outlet on the kiln tail hood. The activated activated carbon is discharged through the lower discharger of the kiln tail hood, and the tail gas coming out of the kiln tail hood enters the water-cooled dust collector tangentially. The water-cooled dust collector adopts a water jacket type, and the inner cylinder adopts a standard cyclone dust collector. The tail gas enters the inner cylinder tangentially from the side of the water-cooled dust collector, and the tail gas rotates downward along the wall of the inner cylinder. Under the action of centrifugal force, the activated carbon dust or particles in the tail gas are preliminarily removed. The flue gas passes through the water-cooled dust collector and exchanges heat with the cooling water in the jacket, and the flue gas temperature is reduced to about 100-200℃. The generated hot water can be used for production or life. The exhaust gas then enters the bag filter to remove the remaining dust in the exhaust gas. The exhaust gas then enters the alkali washing tower to remove the acidic gas contained in the exhaust gas and prevent the formation of dioxins in the subsequent RTO device. Then the tail gas is sucked by the induced draft fan and enters the RTO waste gas treatment device. The tail gas enters the RTO device through the flame arrester. The RTO device adopts a box type or a rotary type. The heat storage ceramic preheats the exhaust gas to about 760℃ and enters the thermal oxidation chamber. Under the action of the combustion-supporting fuel, the temperature rises to more than 800℃, and the organic matter and carbon monoxide in the exhaust gas are completely incinerated. Part of the generated flue gas enters another heat storage chamber to release heat, and the flue gas temperature is reduced to about 100℃. Part of the high-temperature flue gas directly enters the air preheater from the thermal oxidation chamber, preheats the air from the blower to about 300℃, and goes to the air main pipe, and enters the rotary kiln cylinder for combustion, thereby reducing the energy consumption of the activation furnace.Finally, the two flue gases enter the flue gas mixing tank and mix, and then are discharged through the discharge port to meet the standards. When used to incinerate powdered activated carbon, the granular activated carbon feeding device stops running, and the powdered activated carbon enters the rotary kiln cylinder from the inlet. The combustion air from the air preheater enters the air main pipe, and then enters the rotary kiln cylinder tangentially through the air inlet to blow up the powdered activated carbon, making the activated carbon in a boiling state, and the powdered activated carbon is activated. The subsequent exhaust gas treatment device and the RTO incineration device have the same working process as the granular activated carbon activation. The preheated air from the air preheater in the RTO treatment device enters the air main pipe from the air main inlet. By adjusting the adjusting nut, the sealing plate fixing device is moved to make The second sealing plate connected with the fixed rod device moves outward to open the air inlet, and hot air enters the rotary kiln cylinder from the air inlet to assist combustion. The other air inlets are sealed by the first sealing plate. The opening of the regulating valve is automatically controlled by the thermocouple installed on the rotary kiln cylinder to ensure that the activation temperature reaches the set value. The hot air enters the insulation material from the air inlet and then enters the rotary kiln cylinder through the refractory material. The air inlet forms an angle of 135° in the insulation material and the refractory material. A sealing packing is provided at the inlet of the air inlet 27. The first sealing plate is pressed at the inlet of the air inlet through the sealing packing to ensure sealing. It is circular at the inlet of the air inlet and rectangular when entering the insulation material to ensure sealing.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention adopts a rotary kiln device suitable for both powdery and granular activated carbon to activate the activated carbon. After the activated exhaust gas is cooled, dusted and alkali washed, it enters the RTO for incineration treatment. At the same time, the high-temperature flue gas of the RTO is used to preheat the combustion air of the activation furnace. The present invention adopts a rotary kiln device suitable for both powdery and granular activated carbon, eliminates the need for granulation of powdered activated carbon, or adopts a fluidized bed for activation, thereby reducing the equipment investment cost. The exhaust gas is incinerated by RTO, thereby reducing energy consumption, operating cost and investment cost. The high-temperature flue gas of the RTO is used to preheat the combustion air of the activation furnace, thereby reducing the fuel consumption of the activation furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an overall schematic diagram provided by an embodiment of the present invention;

[0016] Figure 2 is a structural diagram of a rotary kiln provided by an embodiment of the present invention;

[0017] Figure 3 is a structural diagram of a rotary kiln air inlet device provided by an embodiment of the present invention;

[0018] Figure 4 It is a structural diagram of a sealing plate fixing device provided by an embodiment of the present invention;

[0019] Figure 5 It is an enlarged view of the air inlet provided by an embodiment of the present invention.

[0020] In the figure: 1. granular activated carbon feeding device; 2. steam inlet; 3. powdered activated carbon inlet; 4. burner; 5. kiln head cover; 6. rotary kiln cylinder; 7. kiln tail cover; 8. water-cooled dust collector; 9. bag filter; 10. alkali washing tower; 11. induced draft fan; 12. RTO device; 13. air preheater; 14. flue gas mixing tank; 15. blower; 16. flue gas discharge port; 17. flame arrester; 18. discharger; 19. sealing cover; 20. air main; 21. main air inlet; 22. regulating valve; 23. thermocouple; 24. refractory material; 25. insulation material; 26. first sealing plate; 27. air inlet; 28. air distribution cover; 29. ​​sealing plate fixing device; 30. second sealing plate; 31. fixing rod; 32. sleeve; 33. adjusting nut; 34. sealing packing. DETAILED DESCRIPTION

[0021] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0022] The structure of the present invention is described in detail below in conjunction with the accompanying drawings.

[0023] like Figures 1 to 5 As shown, an activation device and method for granular and powdered activated carbon provided by an embodiment of the present invention include a rotary kiln activation device, which includes a granular activated carbon feeding device 1, a rotary kiln cylinder 6 is installed on the right side of the granular activated carbon feeding device 1, a steam inlet 2 is fixedly connected to the left side of the rotary kiln cylinder 6, a burner 4 is installed at the bottom of the left side of the rotary kiln cylinder 6, a kiln tail cover 7 is sleeved on the right side of the rotary kiln cylinder 6, a discharger is installed at the bottom of the kiln tail cover 7, a kiln head cover 5 is installed on the surface of the rotary kiln cylinder 6, and a powdered activated carbon inlet 3 is installed on the surface of the rotary kiln cylinder 6; and,

[0024] The activated tail gas treatment device includes a water-cooled dust collector 8, a bag dust collector 9 is connected to the right side of the water-cooled dust collector 8, one end of the bag dust collector 9 is connected to an alkali washing tower 10, and an induced draft fan 11 is fixedly connected to the right side of the alkali washing tower 10; and,

[0025] It also includes an RTO device, which includes a flame arrester 17, an RTO device 12, an air preheater 13 and a flue gas mixing tank 14; the flame arrester 17 is installed on the left side of the RTO device 12, the air preheater 13 is installed on the right side of the RTO device 12, and the flue gas mixing tank 14 is installed on the right side of the air preheater 13.

[0026] An air main pipe 20, an air supply valve, an air distribution hood 28 and a thermocouple 23 are installed on the rotary kiln cylinder 6. Refractory materials 24 and thermal insulation materials 25 are installed inside the rotary kiln cylinder 6. Air inlets 27 are evenly distributed inside the rotary kiln cylinder 6. A total air inlet 21 is opened at the bottom of the rotary kiln cylinder 6.

[0027] A sealing plate fixing device 29 is installed at the air inlet 27 . The sealing plate fixing device 29 comprises a sleeve 32 . A fixing rod 31 and a second sealing plate 30 are installed on the sleeve 32 . An adjusting nut 33 is threadedly connected to the sleeve 32 .

[0028] A sealing packing 34 is installed at the inlet of the air inlet 27 , and a first sealing plate 26 is installed on one side of the sealing packing 34 . The inlet of the air inlet 27 is circular, and the outlet is rectangular.

[0029] A blower 15 is connected to one side of the flue gas mixing tank 14, a flue gas discharge port 16 used in conjunction with the flue gas mixing tank 14 is installed at the bottom of the air preheater 13, a discharger 18 is provided at the bottom of the kiln tail cover 7, and a sealing cover 19 is installed on the surface of the rotary kiln cylinder 6.

[0030] The granular activated carbon is transported into the rotary kiln cylinder 6 by the feeding device 1, and the saturated steam enters the rotary kiln cylinder 6 through the steam inlet 2, and is ignited and activated by the burner 4. The rotary kiln cylinder 6 is set at a certain inclination angle, and the granular activated carbon rolls forward in the rotary kiln cylinder 6. The organic matter in the activated carbon is volatilized, gasified, and pyrolyzed. The generated tail gas is discharged through the tail gas outlet on the kiln tail cover 7, and the activated carbon is discharged from the lower discharger of the kiln tail cover 7. The tail gas coming out of the kiln tail cover 7 enters the water-cooled dust collector 8 tangentially. The water-cooled dust collector 8 adopts a water jacket type, and the inner cylinder adopts a standard cyclone dust collector. The tail gas enters the inner cylinder tangentially from the side of the water-cooled dust collector 8, and the tail gas rotates downward along the wall of the inner cylinder. Under the action of centrifugal force, the activated carbon dust or particles in the tail gas are preliminarily removed. The flue gas passes through the water-cooled dust collector 8 and exchanges heat with the cooling water in the jacket, and the flue gas temperature is reduced to about 100-200°C. The generated hot water can be used for production or life. The tail gas then enters the bag filter 9 to remove the remaining dust in the exhaust gas. The tail gas then enters the alkali washing tower 10 to remove the acidic gas contained in the tail gas and prevent the formation of dioxins in the subsequent RTO device. Then the tail gas is sucked by the induced draft fan 11 and enters the RTO waste gas treatment device. The tail gas enters the RTO device 12 through the flame arrester 17. The RTO device 12 adopts a box type or a rotary type. The heat storage ceramic preheats the exhaust gas to about 760°C and enters the thermal oxidation chamber. Under the action of the combustion-supporting fuel, the temperature is raised to above 800°C, and the organic matter and carbon monoxide in the exhaust gas are completely incinerated. Part of the generated flue gas enters another heat storage chamber to release heat, and the flue gas temperature is reduced to about 100°C. Part of the high-temperature flue gas directly enters the air preheater 13 from the thermal oxidation chamber, preheats the air from the blower 15 to about 300°C, and goes to the air main 20, and enters the rotary kiln cylinder 6 for combustion, thereby reducing the energy consumption of the activation furnace.Finally, the two flue gases enter the flue gas mixing tank 14 and mix, and then are discharged through the discharge port in compliance with the standards. When used to incinerate powdered activated carbon, the granular activated carbon feeding device 1 stops running, and the powdered activated carbon enters the rotary kiln from the inlet. The combustion air from the air preheater 13 enters the air main pipe 20, and then enters the rotary kiln cylinder 6 tangentially through the air inlet 27 to blow up the powdered activated carbon, so that the activated carbon is in a boiling state, and the powdered activated carbon is activated. The subsequent exhaust gas treatment device and the RTO incineration device have the same working process as the granular activated carbon activation. The preheated air from the air preheater 13 in the RTO treatment device enters the air main pipe 20 from the air main inlet 21, and the sealing plate fixing device 29 is moved by adjusting the adjusting nut 33 so that it is connected to the fixing rod 31. The second sealing plate 30 connected together moves outward to open the air inlet 27, and hot air enters the rotary kiln from the air inlet 27 to assist combustion. The other air inlets 27 are sealed by the first sealing plate 26. The opening of the regulating valve 22 is automatically controlled by the thermocouple 23 installed on the rotary kiln cylinder 6 to ensure that the activation temperature reaches the set value. The hot air enters the insulation material 25 from the air inlet 27, and then enters the rotary kiln through the refractory material 24. The air inlet 27 forms an angle of 135° in the insulation material 25 and the refractory material 24. A sealing packing 34 is provided at the inlet of the air inlet 27. The first sealing plate 26 is pressed on the inlet of the air inlet 27 through the sealing packing 34 to ensure sealing. The air inlet 27 is circular at the inlet and rectangular when entering the insulation material 25 to ensure sealing.

[0031] Working principle of the present invention:

[0032] When in use, the granular activated carbon feeding device 1 is transported into the rotary kiln cylinder 6, saturated steam enters the rotary kiln cylinder 6 through the steam inlet 2, and is ignited and activated by the burner 4. The rotary kiln cylinder 6 is set at a certain inclination angle, and the granular activated carbon rolls forward in the rotary kiln cylinder 6. The organic matter in the activated carbon is volatilized, gasified, and pyrolyzed. The generated tail gas is discharged through the tail gas outlet on the kiln tail cover 7, and the activated carbon is discharged through the lower discharger of the kiln tail cover 7. The tail gas coming out of the kiln tail cover 7 enters the water-cooled dust collector 8 tangentially. The water-cooled dust collector 8 adopts a water jacket type, and the inner cylinder adopts a standard cyclone dust collector. The tail gas enters the inner cylinder tangentially from the side of the water-cooled dust collector 8, and the tail gas rotates downward along the wall of the inner cylinder. Under the action of centrifugal force, the activated carbon dust or particles in the tail gas are preliminarily removed. The flue gas passes through the water-cooled dust collector 8 and exchanges heat with the cooling water in the jacket, and the flue gas temperature is reduced to about 100-200°C. The generated hot water can be used for production or life. The tail gas then enters the bag filter 9 to remove the remaining dust in the exhaust gas. The tail gas then enters the alkali washing tower 10 to remove the acidic gas contained in the tail gas and prevent the formation of dioxins in the subsequent RTO device. Then the tail gas is sucked by the induced draft fan 11 and enters the RTO waste gas treatment device. The tail gas enters the RTO device 12 through the flame arrester 17. The RTO device 12 adopts a box type or a rotary type. The heat storage ceramic preheats the exhaust gas to about 760°C and enters the thermal oxidation chamber. Under the action of the combustion-supporting fuel, the temperature is raised to above 800°C, and the organic matter and carbon monoxide in the exhaust gas are completely incinerated. Part of the generated flue gas enters another heat storage chamber to release heat, and the flue gas temperature is reduced to about 100°C. Part of the high-temperature flue gas directly enters the air preheater 13 from the thermal oxidation chamber, preheats the air from the blower 15 to about 300°C, and goes to the air main 20, and enters the rotary kiln cylinder 6 for combustion, thereby reducing the energy consumption of the activation furnace.Finally, the two flue gases enter the flue gas mixing tank 14 and mix, and then are discharged through the discharge port in compliance with the standards. When used for incinerating powdered activated carbon, the granular activated carbon feeding device 1 stops running, and the powdered activated carbon enters the rotary kiln cylinder 6 from the inlet. The combustion-supporting air from the air preheater 13 enters the air main pipe 20, and then enters the rotary kiln cylinder 6 tangentially through the air inlet 27 to blow up the powdered activated carbon, so that the activated carbon is in a boiling state, and the powdered activated carbon is activated. The subsequent exhaust gas treatment device and the RTO incineration device have the same working process as the granular activated carbon activation. The preheated air from the air preheater 13 in the RTO treatment device enters the air main pipe 20 from the air main inlet 21. By adjusting the adjusting nut 33, the sealing plate fixing device 29 is moved so that it is connected to the fixing rod 31. The second sealing plate 30 moves outward to open the air inlet 27, and hot air enters the rotary kiln cylinder 6 from the air inlet 27 to assist combustion. The other air inlets 27 are sealed by the first sealing plate 26. The opening of the regulating valve 22 is automatically controlled by the thermocouple 23 installed on the rotary kiln cylinder 6 to ensure that the activation temperature reaches the set value. The hot air enters the insulation material 25 from the air inlet 27, and then enters the rotary kiln cylinder 6 through the refractory material 24. The air inlet 27 forms an angle of 135° in the insulation material 25 and the refractory material 24. A sealing packing 34 is provided at the inlet of the air inlet 27. The first sealing plate 26 is pressed on the inlet of the air inlet 27 through the sealing packing 34 to ensure sealing. The air inlet 27 is circular at the inlet and rectangular when entering the insulation material 25 to ensure sealing.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent will not depart from the scope of the technical solution of the present invention.

Claims

1. A device for activating granular and powdered activated carbon, characterized in that: The invention comprises a rotary kiln activation device, which comprises a granular activated carbon feeding device (1), a rotary kiln cylinder (6) is installed on the right side of the granular activated carbon feeding device (1), a steam inlet (2) is fixedly connected to the left side of the rotary kiln cylinder (6), a burner (4) is installed at the bottom of the left side of the rotary kiln cylinder (6), a kiln tail cover (7) is sleeved on the right side of the rotary kiln cylinder (6), a discharger is installed at the bottom of the kiln tail cover (7), a kiln head cover (5) is installed on the surface of the rotary kiln cylinder (6), and the powdered activated carbon inlet (3) is installed on the surface of the rotary kiln cylinder (6); and, The activated tail gas treatment device comprises a water-cooled dust collector (8), the right side of the water-cooled dust collector (8) is connected to a bag dust collector (9), one end of the bag dust collector (9) is connected to an alkali washing tower (10), and the right side of the alkali washing tower (10) is fixedly connected to an induced draft fan (11); and, It also includes an RTO device, which includes a flame arrester (17), an RTO device (12), an air preheater (13) and a flue gas mixing tank (14); the flame arrester (17) is installed on the left side of the RTO device (12), the air preheater (13) is installed on the right side of the RTO device (12), and the flue gas mixing tank (14) is installed on the right side of the air preheater (13).

2. A granular and powdered activated carbon activation device as claimed in claim 1, characterized in that: The rotary kiln cylinder (6) is equipped with an air main pipe (20), an air supply valve, an air distribution cover (28) and a thermocouple (23); the interior of the rotary kiln cylinder (6) is equipped with refractory materials (24) and thermal insulation materials (25); the interior of the rotary kiln cylinder (6) is evenly distributed with air inlets (27); and the bottom of the rotary kiln cylinder (6) is equipped with a main air inlet (21).

3. A granular and powdered activated carbon activation device as claimed in claim 1, characterized in that: A sealing plate fixing device (29) is installed at the air inlet (27), and the sealing plate fixing device (29) comprises a sleeve (32), a fixing rod (31) and a second sealing plate (30) are installed on the sleeve (32), and an adjusting nut (33) is threadedly connected to the sleeve (32).

4. A granular and powdered activated carbon activation device as claimed in claim 4, characterized in that: A sealing packing (34) is installed at the inlet of the air inlet (27), and a first sealing plate (26) is installed on one side of the sealing packing (34). The inlet of the air inlet (27) is circular, and the outlet is rectangular.

5. A granular and powdered activated carbon activation device as claimed in claim 1, characterized in that: A blower (15) is connected to one side of the flue gas mixing tank (14), a flue gas discharge port (16) used in conjunction with the flue gas mixing tank (14) is installed at the bottom of the air preheater (13), a discharger (18) is provided at the bottom of the kiln tail cover (7), and a sealing cover (19) is installed on the surface of the rotary kiln cylinder (6).

6. A method for activating granular and powdered activated carbon, characterized in that: A granular and powdered activated carbon activation device according to any one of claims 1 to 5, comprising: Granular activated carbon is transported into a rotary kiln cylinder (6) by a feeding device (1), saturated steam enters the rotary kiln cylinder (6) through a steam inlet (2), and is ignited and activated by a burner (4). The rotary kiln cylinder (6) is provided with a certain inclination angle, and the granular activated carbon rolls forward in the rotary kiln cylinder (6). Organic matter in the activated carbon is volatilized, gasified, and pyrolyzed, and the generated tail gas is discharged through the tail gas outlet on the kiln tail hood (7), and the activated activated carbon is discharged from the lower discharger of the kiln tail hood (7).

7. A granular and powdered activated carbon activation device as claimed in claim 6, characterized in that: The tail gas from the kiln tail cover (7) enters the water-cooled dust collector (8) tangentially. The water-cooled dust collector (8) adopts a water jacket type, and the inner cylinder adopts a standard cyclone dust collector. The tail gas enters the inner cylinder tangentially from the side of the water-cooled dust collector (8), and the tail gas rotates downward along the wall of the inner cylinder. Under the action of centrifugal force, the activated carbon dust or particles in the tail gas are preliminarily removed. The flue gas passes through the water-cooled dust collector (8) and exchanges heat with the cooling water in the jacket. The flue gas temperature is reduced to about 100-200°C, and the hot water generated can be used for production or life.

8. A granular and powdered activated carbon activation device as claimed in claim 6, characterized in that: The tail gas then enters the bag filter (9) to remove the remaining dust in the exhaust gas, and then enters the alkali scrubber (10) to remove the acid gas contained in the tail gas to prevent the generation of dioxins in the subsequent RTO device. Then the tail gas is sucked by the induced draft fan (11) and enters the RTO waste gas treatment device. The tail gas enters the RTO device (12) through the flame arrester (17). The RTO device (12) adopts a box type or a rotary type. The heat storage ceramic preheats the waste gas to about 760°C and enters the thermal oxidation chamber. Under the action of the combustion-supporting fuel, the temperature is raised to more than 800°C, and the organic matter and carbon monoxide in the waste gas are completely burned. A part of the generated flue gas enters another heat storage chamber to release heat, and the flue gas temperature is reduced to about 100°C. A part of the high-temperature flue gas directly enters the air preheater (13) from the thermal oxidation chamber to preheat the air from the blower (15) to about 300°C and go to the air main pipe (20), and enter the rotary kiln cylinder (6) to support combustion, thereby reducing the energy consumption of the activation furnace. Finally, the two streams of flue gas enter the flue gas mixing tank (14) and are mixed before being discharged through the discharge port to meet the standards. When used to incinerate powdered activated carbon, the granular activated carbon feeding device (1) stops running, the powdered activated carbon enters the rotary kiln barrel (6) from the inlet, the combustion-supporting air from the air preheater (13) enters the air main pipe (20), and then enters the rotary kiln barrel (6) tangentially through the air inlet (27), blowing up the powdered activated carbon, making the activated carbon in a boiling state, and the powdered activated carbon is activated. The subsequent exhaust gas treatment device and RTO incineration device work flow is the same as when the granular activated carbon is activated.

9. A granular and powdered activated carbon activation device as claimed in claim 6, characterized in that: The preheated air from the air preheater (13) in the RTO treatment device enters the air main pipe (20) from the air main inlet (21). By adjusting the adjusting nut (33), the sealing plate fixing device (29) is moved so that the second sealing plate (30) connected to the fixing rod (31) device moves outward, opening the air inlet (27). The hot air enters the rotary kiln cylinder (6) from the air inlet (27) to assist combustion. The other air inlets (27) are sealed by the first sealing plate (26). The opening of the regulating valve (22) is automatically controlled by a thermocouple (23) installed on the rotary kiln cylinder (6) to ensure that the activation temperature reaches the set value. Hot air enters the heat-insulating material (25) from the air inlet (27), and then enters the rotary kiln shell (6) through the refractory material (24). The air inlet (27) forms an angle of 135 degrees between the heat-insulating material (25) and the refractory material (24). A sealing packing (34) is provided at the inlet of the air inlet (27). The first sealing plate (26) is pressed against the inlet of the air inlet (27) through the sealing packing (34) to ensure sealing. The air inlet (27) is circular at the inlet and rectangular when entering the insulation material (25) to ensure sealing.

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