A flue gas treatment device for desulfurization and denitrification and its usage method

Abstract

The present invention discloses a desulfurization and denitration flue gas treatment device and its usage method, including a desulfurization rack. One side of the surface of the desulfurization rack is communicated with an air inlet pipe, and both sides of the top of the desulfurization rack are respectively communicated with a catalytic pipe and a drainage pipe. By setting the desulfurization rack, air inlet pipe, catalytic pipe, drainage pipe, rotating disk, desulfurization activated carbon body, ventilation frame, connecting block, air outlet pipe, limiting ring, movable groove and door, the air inlet pipe, catalytic pipe and drainage pipe can respectively convey oxygen and water into the inner cavity of the desulfurization rack when needed. The cooperation of oxygen and the desulfurization activated carbon body for the adsorption and catalysis of sulfur substances can form sulfur trioxide, solving the problem that in the actual use process, the desulfurization activated carbon that first comes into contact with the flue gas will be gradually blocked due to impurities in the flue gas and other factors, resulting in a decrease in the ventilation rate, and the output power of the external fan needs to be continuously increased, while the service life of other desulfurization activated carbons is still very long.

Description

Technical Field

[0001] The present invention relates to the technical field of desulfurization and denitrification flue gas treatment, and specifically to a desulfurization and denitrification flue gas treatment device and its usage method. Background Art

[0002] With the promotion of policies such as carbon reduction and environmental protection, the treatment of desulfurization and denitrification in the process of flue gas emission has been increasingly emphasized. Large and small factories have also started to actively carry out more effective treatment of flue gas emissions to reduce pollution to the natural environment. Different factories also begin to use a variety of different desulfurization and denitrification treatment devices according to different needs and emission amounts to reduce pollutants in the flue gas.

[0003] Flue gas can be treated by adding a certain proportion of lime and ammonia water. In addition to this method, users will also use processed desulfurization activated carbon to treat the flue gas after denitrification treatment. When the flue gas passes through multiple desulfurization activated carbon blocks during transmission, the sulfur substances contained in it will be adsorbed and catalyzed by the catalytic substances on the surface of the desulfurization activated carbon, and then cooperate with the reaction of external oxygen and water to produce dilute sulfuric acid. This desulfurization process does not require the addition of additional catalysts, and the treatment cost of the flue gas is relatively low. However, in the actual use process, the first desulfurization activated carbon in contact with the flue gas will be gradually blocked due to impurities in the flue gas, etc., resulting in a decrease in the ventilation rate, and the power of the external fan needs to be continuously increased. At the same time, the service life of other desulfurization activated carbons is still very long, causing uneven use of multiple desulfurization activated carbons, and then increasing the maintenance frequency of the device. Summary of the Invention

[0004] The purpose of the present invention is to provide a desulfurization and denitrification flue gas treatment device and its usage method, which have the advantage of reducing the maintenance frequency, and solve the problem that in the actual use process, the first desulfurization activated carbon in contact with the flue gas will be gradually blocked due to impurities in the flue gas, etc., resulting in a decrease in the ventilation rate, and the output power of the external fan needs to be continuously increased. At the same time, the service life of other desulfurization activated carbons is still very long, causing uneven use of multiple desulfurization activated carbons, and then increasing the maintenance frequency of the device.

[0005] To achieve the above object, the present invention provides the following technical solution: A desulfurization and denitrification flue gas treatment device, including a desulfurization rack, one side of the surface of the desulfurization rack is communicated with an intake pipe, both sides of the top of the desulfurization rack are respectively communicated with a catalytic pipe and a drainage pipe, the rear end of the inner cavity of the desulfurization rack is movably connected with a rotating disk, the periphery of the surface of the rotating disk is fixedly connected with a desulfurization activated carbon body, the front end of the inner cavity of the desulfurization rack is fixedly connected with a ventilation frame, one side of the top of the ventilation frame is fixedly connected with a connecting block, the front of the ventilation frame is communicated with an outlet pipe, the front end of the outlet pipe penetrates through the ventilation frame and the desulfurization rack and extends to the outside of the desulfurization rack, the surface of the inner cavity of the desulfurization rack is fixedly connected with a limiting ring, one side of the desulfurization activated carbon body contacts the limiting ring, an activity groove is opened on one side of the connecting block, and a blocking door is movably connected to the right side of the connecting block.

[0006] Preferably, a sealing strip is fixedly connected to the back of the blocking door, and the side of the sealing strip away from the blocking door contacts the rotating disk.

[0007] Preferably, a first pulley is movably connected to the back of the desulfurization rack, a rotating rod is fixedly connected to the front of the first pulley, and the front end of the rotating rod penetrates through the desulfurization rack and is fixedly connected to the back of the rotating disk.

[0008] Preferably, a second pulley is movably connected to the left side of the back of the desulfurization rack, the second pulley is connected to the first pulley by a belt drive, a base plate is fixedly connected to the lower end of the back of the desulfurization rack, a motor body and a speed reducer are respectively fixedly connected to the rear end and the front end of the top of the base plate, the output shaft of the motor body is in transmission connection with the input end of the speed reducer, and the output end of the speed reducer is fixedly connected to the second pulley.

[0009] Preferably, a connecting pipe is communicated with the bottom of the intake pipe, a valve is communicated with the surface of the connecting pipe, and a storage tank is communicated with the end of the connecting pipe away from the desulfurization rack.

[0010] Preferably, a sliding groove is opened on the front of the rotating disk, a sliding block is fixedly connected to the back of the ventilation frame, and one end of the sliding block extends into the inner cavity of the sliding groove and is slidably connected to the inner cavity of the sliding groove.

[0011] Preferably, the usage method steps are as follows:

[0012] A. First, the flue gas to be desulfurized is transported through the intake pipe to the inner cavity of the desulfurization rack by an external fan. The flue gas enters the inner cavity of the intake pipe, displaces along the surface of the ventilation frame, passes through the desulfurization activated carbon body, and is adsorbed and filtered by the desulfurization activated carbon body. The desulfurization activated carbon body adsorbs the sulfur substances in the flue gas. At this time, oxygen is transported into the inner cavity of the desulfurization rack through the catalytic pipe, and a catalytic reaction is carried out in cooperation with the catalytic substances on the surface of the desulfurization activated carbon body to form sulfur trioxide. The treated flue gas displaces into the inner cavity of the ventilation frame and is finally transmitted to the external exhaust device through the outlet pipe;

[0013] B. When further treatment of the inner cavity of the desulfurization rack is required, after the sulfur trioxide in the inner cavity of the desulfurization rack reaches a certain concentration, water is transported through the drain pipe to the inner cavity of the desulfurization rack by an external water pump and reacts with the sulfur trioxide to form dilute sulfuric acid. Then, the valve on the surface of the connecting pipe is opened, and the dilute sulfuric acid is discharged into the inner cavity of the storage tank;

[0014] C. When it is necessary to adjust the desulfurization activated carbon body to prevent the desulfurization activated carbon body closer to the intake pipe from being blocked due to filtering too many impurities and to reduce the unevenness of the filtration amounts of multiple desulfurization activated carbon bodies, the motor body is started by an external controller. The output shaft of the motor body drives the output end of the speed reducer to rotate. The output end of the speed reducer drives the second pulley to rotate. The second pulley drives the first pulley and the rotating rod to rotate through the belt. The rotating rod drives the rotating disk to rotate, and the rotating disk drives the desulfurization activated carbon body to rotate, thereby adjusting the position of the desulfurization activated carbon body.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] The present invention is provided with a desulfurization rack, an air inlet pipe, a catalytic pipe, a drain pipe, a rotating disk, a desulfurization activated carbon body, a ventilation frame, a connecting block, an air outlet pipe, a limiting ring, a movable groove and a shutter. The air inlet pipe, the catalytic pipe and the drain pipe can respectively convey oxygen and water into the inner cavity of the desulfurization rack when needed. The oxygen cooperates with the desulfurization activated carbon body to adsorb and catalyze sulfur substances to form sulfur trioxide, and the sulfur trioxide cooperates with water to form dilute sulfuric acid, thereby achieving the effect of flue gas desulfurization. The rotating disk cooperates with the first pulley, the rotating rod and the second pulley to rotate in the inner cavity of the desulfurization rack and adjust the position of the desulfurization activated carbon body, so as to reduce the unevenness of the filtration amount of multiple desulfurization activated carbon bodies, and at the same time prevent the desulfurization activated carbon body closer to the air inlet pipe from being blocked due to filtering more impurities, thereby increasing the requirement for the blowing power of the external fan. The ventilation frame cooperates with the connecting block to guide the flow of the flue gas. The limiting ring cooperates with the connecting block to reduce the gap between the desulfurization activated carbon body and the inner wall of the desulfurization rack. The shutter cooperates with the ventilation frame and the connecting block to guide the flue gas and block the flue gas transmitted clockwise, while not affecting the desulfurization activated carbon body rotating counterclockwise. This solves the problem that in the actual use process, the desulfurization activated carbon that first comes into contact with the flue gas will be gradually blocked due to impurities in the flue gas, etc., resulting in a decrease in the ventilation rate, and the output power of the external fan needs to be continuously increased. At the same time, the service life of other desulfurization activated carbons is still very long, causing uneven use of multiple desulfurization activated carbons, and then increasing the maintenance frequency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention;

[0018] Figure 2 is an exploded structural diagram of the desulfurization rack of the present invention;

[0019] Figure 3 is a planar structural diagram of the rotating disk of the present invention;

[0020] Figure 4 is a three-dimensional structural diagram of the rotating rod of the present invention.

[0021] In the figure: 1, desulfurization rack; 2, air inlet pipe; 3, catalytic pipe; 4, drain pipe; 5, rotating disk; 6, desulfurization activated carbon body; 7, ventilation frame; 8, connecting block; 9, air outlet pipe; 10, limiting ring; 11, movable groove; 12, shutter; 13, sealing strip; 14, first pulley; 15, rotating rod; 16, second pulley; 17, base plate; 18, motor body; 19, speed reducer; 20, connecting pipe; 21, storage tank; 22, chute; 23, slider. DETAILED DESCRIPTION OF THE INVENTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0023] The desulfurization rack 1, intake pipe 2, catalytic pipe 3, drain pipe 4, rotating disk 5, desulfurization activated carbon body 6, ventilation frame 7, connecting block 8, outlet pipe 9, limiting ring 10, movable groove 11, shutter 12, sealing strip 13, first pulley 14, rotating rod 15, second pulley 16, base plate 17, motor body 18, reducer 19, connecting pipe 20, storage tank 21, chute 22 and slider 23 components of the present invention are all common standard components or components known to those skilled in the art, and their structures and principles can all be known by those skilled in the art through technical manuals or by conventional experimental methods.

[0024] Please refer to Figures 1-4, A desulfurization and denitrification flue gas treatment device, including a desulfurization frame 1. One side of the surface of the desulfurization frame 1 is communicated with an air inlet pipe 2. The two sides of the top of the desulfurization frame 1 are respectively communicated with a catalytic pipe 3 and a drain pipe 4. The rear end of the inner cavity of the desulfurization frame 1 is movably connected with a rotating disk 5. The peripheries of the surface of the rotating disk 5 are fixedly connected with desulfurization activated carbon bodies 6. The front end of the inner cavity of the desulfurization frame 1 is fixedly connected with a ventilation frame 7. One side of the top of the ventilation frame 7 is fixedly connected with a connecting block 8. The front of the ventilation frame 7 is communicated with an air outlet pipe 9. The front end of the air outlet pipe 9 penetrates through the ventilation frame 7 and the desulfurization frame 1 and extends to the outside of the desulfurization frame 1. The surface of the inner cavity of the desulfurization frame 1 is fixedly connected with a limiting ring 10. One side of the desulfurization activated carbon body 6 contacts with the limiting ring 10. An activity groove 11 is opened on one side of the connecting block 8. A shutter 12 is movably connected to the right side of the connecting block 8. By setting the desulfurization frame 1, the air inlet pipe 2, the catalytic pipe 3, the drain pipe 4, the rotating disk 5, the desulfurization activated carbon body 6, the ventilation frame 7, the connecting block 8, the air outlet pipe 9, the limiting ring 10, the activity groove 11 and the shutter 12, the air inlet pipe 2, the catalytic pipe 3 and the drain pipe 4 can respectively convey oxygen and water into the inner cavity of the desulfurization frame 1 when needed. The oxygen cooperates with the desulfurization activated carbon body 6 to adsorb and catalyze sulfur substances to form sulfur trioxide, and the sulfur trioxide cooperates with water to form dilute sulfuric acid, so as to achieve the effect of desulfurizing flue gas. The rotating disk 5 cooperates with the first pulley 14, the rotating rod 15 and the second pulley 16 to rotate in the inner cavity of the desulfurization frame 1 and adjust the position of the desulfurization activated carbon body 6, so as to reduce the unevenness of the filtration amount of multiple desulfurization activated carbon bodies 6. At the same time, it prevents the desulfurization activated carbon body 6 closer to the air inlet pipe 2 from being blocked due to filtering more impurities, and then increasing the requirement for the blowing power of the external fan. The ventilation frame 7 cooperates with the connecting block 8 to guide the flow of flue gas. The limiting ring 10 cooperates with the connecting block 8 to reduce the gap between the desulfurization activated carbon body 6 and the inner wall of the desulfurization frame 1. The shutter 12 cooperates with the ventilation frame 7 and the connecting block 8 to guide the flow of flue gas and block the flue gas transmitted clockwise, while not affecting the desulfurization activated carbon body 6 rotating counterclockwise. It solves the problem that in the actual use process, the desulfurization activated carbon that first contacts the flue gas will be gradually blocked due to impurities in the flue gas and other influences, resulting in a reduction in the ventilation rate, and the output power of the external fan needs to be continuously increased. At the same time, the service life of other desulfurization activated carbons is still very long, causing uneven use of multiple desulfurization activated carbons, and then increasing the maintenance frequency of the device.

[0025] Specifically, a sealing strip 13 is fixedly connected to the back of the shutter 12. One side of the sealing strip 13 away from the shutter 12 contacts with the rotating disk 5. By setting the sealing strip 13, the sealing performance between the shutter 12 and the rotating disk 5 is increased.

[0026] Specifically, a first pulley 14 is movably connected to the back of the desulfurization frame 1. A rotating rod 15 is fixedly connected to the front of the first pulley 14. The front end of the rotating rod 15 penetrates through the desulfurization frame 1 and is fixedly connected to the back of the rotating disk 5. By providing the first pulley 14 and the rotating rod 15, when the first pulley 14 rotates, it can drive the rotating rod 15 and the rotating disk 5 to rotate.

[0027] Specifically, a second pulley 16 is movably connected to the left side of the back of the desulfurization frame 1. The second pulley 16 is connected to the first pulley 14 by belt drive. A base plate 17 is fixedly connected to the lower end of the back of the desulfurization frame 1. A motor body 18 and a speed reducer 19 are respectively fixedly connected to the rear end and the front end of the top of the base plate 17. The output shaft of the motor body 18 is in transmission connection with the input end of the speed reducer 19. The output end of the speed reducer 19 is fixedly connected to the second pulley 16. By providing the second pulley 16, the base plate 17, the motor body 18 and the speed reducer 19, power is provided for the rotation of the first pulley 14.

[0028] Specifically, a connecting pipe 20 is communicated with the bottom of the air inlet pipe 2. A valve is communicated with the surface of the connecting pipe 20. One end of the connecting pipe 20 far from the desulfurization frame 1 is communicated with a storage tank 21. By providing the connecting pipe 20 and the storage tank 21, the device is provided with the function of storing recycled materials.

[0029] Specifically, a sliding groove 22 is formed on the front of the rotating disk 5. A sliding block 23 is fixedly connected to the back of the ventilation frame 7. One end of the sliding block 23 extends into the inner cavity of the sliding groove 22 and is slidably connected to the inner cavity of the sliding groove 22. By providing the sliding groove 22 and the sliding block 23, the rotation of the rotating disk 5 is limited to prevent the rotation of the rotating disk 5 from being offset.

[0030] Specifically, its usage method steps are as follows:

[0031] A. First, the flue gas to be desulfurized is conveyed through the air inlet pipe 2 to the inner cavity of the desulfurization frame 1 by an external fan. The flue gas enters the inner cavity of the air inlet pipe 2 and displaces along the surface of the ventilation frame 7 and passes through the desulfurization activated carbon body 6. Through the adsorption and filtration of the desulfurization activated carbon body 6, the desulfurization activated carbon body 6 adsorbs the sulfur substances in the flue gas. At this time, oxygen is conveyed to the inner cavity of the desulfurization frame 1 through the catalytic pipe 3, and a catalytic reaction is carried out in cooperation with the catalytic substances on the surface of the desulfurization activated carbon body 6 to form sulfur trioxide. The treated flue gas displaces into the inner cavity of the ventilation frame 7 and is finally transmitted to an external exhaust device through the air outlet pipe 9;

[0032] B. When further treatment of the inner cavity of the desulfurization frame 1 is required, after the sulfur trioxide in the inner cavity of the desulfurization frame 1 reaches a certain concentration, water is conveyed to the inner cavity of the desulfurization frame 1 through the drainage pipe 4 in cooperation with an external water pump and reacts with the sulfur trioxide to form dilute sulfuric acid. Then, the valve on the surface of the connecting pipe 20 is opened, and the dilute sulfuric acid is discharged into the inner cavity of the storage tank 21;

[0033] C. When it is necessary to adjust the desulfurization activated carbon body 6 to prevent the desulfurization activated carbon body 6 closer to the air inlet pipe 2 from being blocked due to filtering more impurities and to reduce the unevenness of the filtration amounts of multiple desulfurization activated carbon bodies 6, the motor body 18 is started by the external controller. The output shaft of the motor body 18 drives the output end of the speed reducer 19 to rotate. The output end of the speed reducer 19 drives the second pulley 16 to rotate. The second pulley 16 drives the first pulley 14 and the rotating rod 15 to rotate through the belt. The rotating rod 15 drives the rotating disk 5 to rotate. The rotating disk 5 drives the desulfurization activated carbon body 6 to rotate, so as to adjust the position of the desulfurization activated carbon body 6.

[0034] The standard parts used in this application document can all be purchased from the market, and can also be customized according to the descriptions in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art. The control method is to automatically control through the controller. The control circuit of the controller can be realized by simple programming of those skilled in the art, which belongs to the common general knowledge in this field. And this application document is mainly used to protect the mechanical device, so the control method and the circuit connection will not be explained in detail in this application document.

[0035] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or sequence between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0036] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flue gas treatment device for desulfurization and denitrification, comprising a desulfurization frame (1), characterized in that: One side of the surface of the desulfurization frame (1) is communicated with an air inlet pipe (2). Both sides of the top of the desulfurization frame (1) are respectively communicated with a catalytic pipe (3) and a drain pipe (4). The rear end of the inner cavity of the desulfurization frame (1) is movably connected with a rotating disk (5). The periphery of the surface of the rotating disk (5) is fixedly connected with a desulfurization activated carbon body (6). The front end of the inner cavity of the desulfurization frame (1) is fixedly connected with a ventilation frame (7). One side of the top of the ventilation frame (7) is fixedly connected with a connecting block (8). The front of the ventilation frame (7) is communicated with an air outlet pipe (9). The front end of the air outlet pipe (9) penetrates through the ventilation frame (7) and the desulfurization frame (1) and extends to the outside of the desulfurization frame (1). The surface of the inner cavity of the desulfurization frame (1) is fixedly connected with a limiting ring (10). One side of the desulfurization activated carbon body (6) contacts with the limiting ring (10). An activity groove (11) is arranged on one side of the connecting block (8). A shutter (12) is movably connected to the right side of the connecting block (8); The back of the desulfurization frame (1) is movably connected with a first pulley (14). The front of the first pulley (14) is fixedly connected with a rotating rod (15). The front end of the rotating rod (15) penetrates through the desulfurization frame (1) and is fixedly connected with the back of the rotating disk (5); The left side of the back of the desulfurization frame (1) is movably connected with a second pulley (16). The second pulley (16) is connected with the first pulley (14) through a belt drive. The lower end of the back of the desulfurization frame (1) is fixedly connected with a base plate (17). The rear end and the front end of the top of the base plate (17) are respectively fixedly connected with a motor body (18) and a speed reducer (19). The output shaft of the motor body (18) is in transmission connection with the input end of the speed reducer (19). The output end of the speed reducer (19) is fixedly connected with the second pulley (16).

2. The desulfurization and denitrification flue gas treatment device according to claim 1, wherein: A sealing strip (13) is fixedly connected to the back of the shutter (12). One side of the sealing strip (13) away from the shutter (12) contacts with the rotating disk (5).

3. A flue gas desulfurization and denitrification treatment device according to claim 1, characterized in that: The bottom of the air inlet pipe (2) is communicated with a connecting pipe (20). A valve is communicated with the surface of the connecting pipe (20). One end of the connecting pipe (20) away from the desulfurization frame (1) is communicated with a storage tank (21).

4. A desulfurization and denitrification flue gas treatment device according to claim 1, characterized in that: A sliding groove (22) is arranged on the front of the rotating disk (5). A sliding block (23) is fixedly connected to the back of the ventilation frame (7). One end of the sliding block (23) extends into the inner cavity of the sliding groove (22) and is slidably connected with the inner cavity of the sliding groove (22).

5. A method for using a desulfurization and denitrification flue gas treatment device according to any one of claims 1-4, characterized in that: The steps of its usage method are as follows: A. First, the flue gas to be desulfurized is transported through the intake pipe (2) to the inner cavity of the desulfurization rack (1) by an external fan. The flue gas enters the inner cavity of the intake pipe (2), displaces along the surface of the ventilation frame (7), passes through the desulfurization activated carbon body (6), and is adsorbed and filtered by the desulfurization activated carbon body (6). The desulfurization activated carbon body (6) adsorbs the sulfur substances in the flue gas. At this time, oxygen is transported into the inner cavity of the desulfurization rack (1) through the catalytic pipe (3), and a catalytic reaction is carried out in cooperation with the catalytic substances on the surface of the desulfurization activated carbon body (6) to form sulfur trioxide. The treated flue gas displaces into the inner cavity of the ventilation frame (7) and is finally transported to an external exhaust device through the outlet pipe (9); B. When further treatment of the inner cavity of the desulfurization rack (1) is required, after the sulfur trioxide in the inner cavity of the desulfurization rack (1) reaches a certain concentration, water is transported through the drain pipe (4) to the inner cavity of the desulfurization rack (1) in cooperation with an external water pump, and reacts with the sulfur trioxide to form dilute sulfuric acid. Then, the valve on the surface of the connecting pipe (20) is opened, and the dilute sulfuric acid is discharged into the inner cavity of the storage tank (21); C. When it is necessary to adjust the desulfurization activated carbon body (6) to prevent the desulfurization activated carbon body (6) closer to the intake pipe (2) from being blocked due to excessive filtration of impurities and to reduce the unevenness of the filtration amount of multiple desulfurization activated carbon bodies (6), the motor body (18) is started by an external controller. The output shaft of the motor body (18) drives the output end of the speed reducer (19) to rotate. The output end of the speed reducer (19) drives the second pulley (16) to rotate. The second pulley (16) drives the first pulley (14) and the rotating rod (15) to rotate through a belt. The rotating rod (15) drives the rotating disk (5) to rotate, and the rotating disk (5) drives the desulfurization activated carbon body (6) to rotate, thereby adjusting the position of the desulfurization activated carbon body (6).

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