Plasma activation process and device

Abstract

The invention discloses a plasma activation process and device, the device comprises a first-stage activation furnace, a second-stage activation furnace and a steam generator, the first-stage activation furnace is provided with a first feed pipe, the second-stage activation furnace is provided with a second feed pipe, the discharge end of the first-stage activation furnace is communicated with the feed end of the second feed pipe, and the discharge end of the second feed pipe is communicated with the discharge end of the steam generator. The steam generator is respectively communicated with the first-stage activation furnace and the second-stage activation furnace, plasma jet flame generating devices and steam jet rings are arranged on the side edges of the first feeding pipe and the second feeding pipe, and quantitative feeding controllers are arranged on feeding ports of the first feeding pipe and the second feeding pipe. The plasma is adopted as energy to replace coal, biomass particles and fuel gas, clean production is achieved, and carbon emission is reduced. And secondly, tail gas separated from the first-stage activation furnace is led to a steam generator and a waste heat boiler for waste heat recovery, superheated steam is generated, and the superheated steam returns to the activation furnace. Cooled tail gas still contains combustible gas, heat is recycled through combustion of the combustion furnace, and full utilization of energy is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of activation furnaces, and in particular to a plasma activation process and a device. Background Art

[0002] Activated carbon activation is the process of heating and carbonizing organic raw materials (such as fruit shells, coal, wood, etc.) in an airtight condition, and then reacting with gas to erode the surface and produce a well-developed microporous structure. Activated carbon is made from carbon-containing raw materials such as wood, coal and petroleum coke through pyrolysis and activation. It has a well-developed pore structure, a large specific surface area and abundant surface chemical groups. It is a general term for carbon materials with strong specific adsorption capacity. During the activation process, a large number of molecular carbide surfaces are eroded in a point-like manner, thus forming countless tiny pores on the surface of activated carbon.

[0003] Activation of activated carbon is a necessary treatment based on its application characteristics. Through activation, the porosity of activated carbon is improved, thereby enhancing its adsorption effect. This step is crucial in the preparation process of activated carbon because it determines the porous structure and large specific surface area of ​​activated carbon, which are key factors in improving adsorption.

[0004] Activated carbon is generally activated using traditional activation furnaces, which consume a lot of energy to maintain a high-temperature activation environment, and produce a lot of carbon emissions during the production process, causing environmental pollution. In addition, traditional activation furnaces are prone to feed pipe blockage during feeding, requiring frequent maintenance and adjustment of the device, which greatly affects the production efficiency of activated carbon.

[0005] In view of this, the applicant conducted in-depth research on the above issues, which led to the present case. Summary of the invention

[0006] The main purpose of the present invention is to provide a plasma activation process and device that can effectively solve the above technical problems.

[0007] In order to achieve the above object, the solution of the present invention is:

[0008] A plasma activation device comprises a primary activation furnace, a secondary activation furnace and a steam generator, wherein the primary activation furnace is provided with a first feed pipe, the secondary activation furnace is provided with a second feed pipe, the discharge end of the primary activation furnace is connected with the feed end of the second feed pipe, the steam generator is connected with the primary activation furnace and the secondary activation furnace respectively, the sides of the first feed pipe and the second feed pipe are provided with a plasma jet flame generating device and a steam jet ring, and the feed ports of the first feed pipe and the second feed pipe are provided with a quantitative feed controller.

[0009] Furthermore, the quantitative feeding controller includes a feeding mechanism and a discharging mechanism connected up and down, the discharging mechanism is installed on the first feeding pipe or the second feeding pipe, the feeding mechanism includes a feeding bin, a stirring mechanism and a feeding mechanism, and the inside of the feeding bin is provided with a feeding chamber, a stirring chamber and a feeding chamber connected up and down, the stirring mechanism is arranged in the stirring chamber and stirs the material in the stirring chamber, and the feeding mechanism is arranged in the feeding chamber and quantitatively transports the material to the discharging mechanism.

[0010] Furthermore, the stirring mechanism includes a main rotating shaft, a stirring shaft, a first motor and a transmission member, and the stirring shaft is sleeved on the main rotating shaft. The main rotating shaft and the stirring shaft horizontally pass through the stirring chamber. A frame is provided on the feed bin, and both ends of the main rotating shaft are fixedly connected to the frame. The first motor is installed on the feed bin, and the transmission member is rotatably connected to the side wall of the feed bin, and the transmission member is sleeved on the stirring shaft. The transmission member and the stirring shaft are connected by a spline, and a transmission wheel is provided on the transmission member. The output end of the first motor is connected to the transmission wheel by a belt drive, and stirring blades extending in the spiral direction are symmetrically arranged on the stirring shaft, and a drop opening is provided between the stirring blades and the stirring shaft.

[0011] Furthermore, a driving cavity is provided in the stirring shaft, a fixed block is provided on the side wall of the driving cavity, a driving block is provided on the main rotating shaft, the side of the fixed block close to the driving block has outer convex parts and inner concave parts alternately arranged at intervals, the side of the driving block close to the abutting block is provided with a rotatably connected ball, the driving block is provided with a first spring on the side away from the abutting block, the first spring is sleeved on the main rotating shaft, and the two ends of the first spring respectively abut against the driving block and the side wall of the driving cavity.

[0012] Furthermore, an inclined shaking plate is provided inside the feed chamber, the upper end of the shaking plate is hinged to the side wall of the feed chamber, the rear side wall of the shaking plate is provided with a wedge-shaped groove, the side wall of the feed chamber is provided with a guide groove, a sliding wedge block is provided in the guide groove, the wedge block has an inclined surface that cooperates with the bottom wall of the wedge groove, and the end of the wedge block is connected to the stirring shaft through an adapter frame.

[0013] Furthermore, the feed mechanism includes a feed roller and a transmission gear. The two ends of the feed roller are rotatably connected to the side walls of the feed chamber. The transmission gear is sleeved on the end of the feed roller. The transmission member is provided with a gear section. The gear end can be meshed with the transmission gear for transmission. The outer circumferential surface of the feed roller is provided with a number of evenly distributed feed holes.

[0014] The lifting mechanism is a kind of spring or spring that can be used to lift the lifting block and the lifting block of the lifting guide slot. The lifting guide slot is provided with a guide rod that is slidably connected to the lifting block. The guide rod is provided with a second spring that pushes against the lifting block. The loading frame includes a vertical plate and a horizontal plate that are vertically connected. The vertical plate is arranged in the installation slot. The upper end of the vertical plate is hinged with the lifting plate. The side wall of the discharging bin is also provided with a limit frame. The limit frame includes an upper limit rod and a lower limit rod that are connected to each other. The upper limit rod and the lower limit rod are slidably connected to the side wall of the discharging bin. The end of the lower limit rod extends into the installation slot, and the lower limit rod is provided with a third spring. The third spring pushes against the lower limit rod to press the side wall of the vertical plate. The side wall of the vertical plate is provided with a limit slot.

[0015] Furthermore, the driving mechanism includes a steel rope, a rope winding shaft, a pressure switch and a second motor, both ends of the sealing plate are connected to the steel rope, and both sides of the outer wall of the discharge bin are provided with a rotatably connected rope winding shaft, the end of the steel rope away from the sealing plate passes through the discharge bin and is wound around the rope winding shaft, the second motor is installed on the discharge bin, the power output end of the second motor is connected to the rope winding shaft, the pressure switch is arranged on the side walls on both sides of the discharge bin, the limit frame is provided with a touch plate on the side of the pressure switch, and the pressure switch is electrically connected to the second motor on the same side.

[0016] A process for the above-mentioned activation device comprises the following steps:

[0017] (1) Adding activated carbon from a hopper into a quantitative feed controller of a first feed pipe;

[0018] (2) The steam generator delivers steam to the steam injection ring;

[0019] (3) a quantitative feeding controller quantitatively delivers activated carbon to the first feeding pipe;

[0020] (4) The plasma jet flame generating device at the end of the first feed pipe sprays the activated carbon into the primary activation furnace under the atmosphere of water vapor, and the activated carbon is activated once in the primary activation furnace;

[0021] (5) The activated carbon after the primary activation treatment is transported to the quantitative feeding controller of the second feeding pipe, and the activated carbon is quantitatively transported to the second feeding pipe through the quantitative feeding controller on the second feeding pipe;

[0022] (6) The plasma jet flame generating device at the end of the second feed pipe sprays the activated carbon into the secondary activation furnace under the atmosphere of water vapor, and the activated carbon is subjected to secondary activation treatment by the secondary activation furnace;

[0023] (7) The activated carbon after the secondary activation treatment is sent to a cooling device for cooling; the soft water is preheated by heat recovery, and the activated carbon is cooled at the same time.

[0024] (8) The steam generator recovers waste heat from the exhaust gas.

[0025] The plasma generator may be fed with different types of carrier gases, such as nitrogen, air, argon or helium, so as to achieve a change in the activation atmosphere.

[0026] Compared with the prior art, the present invention adopts plasma as energy to replace coal, biomass particles and fuel gas, thereby achieving clean production and reducing carbon emissions. Secondly, the tail gas separated by the primary activation furnace is passed to the steam generator and the waste heat boiler to recover the waste heat and generate superheated steam, which is then returned to the activation furnace. The cooled tail gas still contains combustible gas, which is burned in the combustion furnace to recover heat and achieve full utilization of energy. In addition, the material can be fully stirred to avoid agglomeration of the material during feeding. At the same time, the activation device of the present invention can control the feeding speed of the material through the feeding mechanism and the discharging mechanism, realize accurate quantitative transportation of the material, prevent the material from being blocked during transportation, and improve the transportation and processing efficiency of the material. And by accurately and quantitatively feeding the material, the material can enter the activation furnace more smoothly, which is more conducive to gas-solid separation between activated carbon and gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the connection structure of the device of the present invention.

[0028] Figure 2 This is a three-dimensional diagram of the appearance and structure of the first-level activation furnace.

[0029] Figure 3 This is a three-dimensional diagram of the appearance and structure of the quantitative feeding controller.

[0030] Figure 4 This is another stereoscopic diagram of the appearance of the quantitative feeding controller.

[0031] Figure 5 It is a front view of the cross-sectional structure of the feeding mechanism.

[0032] Figure 6 for Figure 5 A partial enlarged view of area A.

[0033] Figure 7 It is a side view of the cross-sectional structure of the feeding mechanism.

[0034] Figure 8 It is a three-dimensional diagram of the cross-sectional structure of the feeding mechanism.

[0035] Fig. 9It is a three-dimensional diagram of the cross-sectional structure of the stirring shaft.

[0036] Fig.10 It is a three-dimensional diagram of the appearance structure of the discharging mechanism.

[0037] Fig.11 It is a front view of the cross-sectional structure of the discharging mechanism.

[0038] Fig.12 Another cross-sectional front view of the discharge structure.

[0039] Fig.13 for Fig.12 A partial enlarged view of area B.

[0040] In the figure: a primary activation furnace 11, a secondary activation furnace 12, a steam generator 13, a first feed pipe 14, a second feed pipe 15, a plasma jet flame generating device 16, a steam jet ring 17, a quantitative feed controller 18, a feed mechanism 2, a feed bin 21, a feed chamber 211, a guide chute 2111, a wedge block 2112, a stirring chamber 212, a feeding chamber 213, a main shaft 22, a driving block 221, a ball 222, a first spring 223, a stirring shaft 23, a stirring blade 231, a driving chamber 232, a fixing block 233, an outer protrusion 234, an inner concave portion 235, a first motor 24, a transmission Moving part 25, gear segment 251, shaking plate 26, wedge groove 261, adapter frame 27, feeding roller 28, feeding hole 281, transmission gear 29, discharging mechanism 3, discharging bin 31, discharging cavity 311, mounting groove 312, lifting guide groove 313, guide rod 314, second spring 315, blocking plate 32, loading frame 33, vertical plate 331, horizontal plate 332, limiting groove 333, lifting block 34, limiting frame 35, upper limiting rod 351, lower limiting rod 352, third spring 353, touch plate 354, steel rope 36, rope winding shaft 37, pressure switch 38, second motor 39. DETAILED DESCRIPTION

[0041] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0042] like Figure 1-13As shown, a plasma activation device includes a primary activation furnace 11, a secondary activation furnace 12 and a steam generator 13. The primary activation furnace 11 and the secondary activation furnace 12 have the same structure and can use the existing cyclone separator on the market. The internal structure thereof is not described in detail here. A first feed pipe 14 is provided at the upper end of the primary activation furnace 11, and a second feed pipe 15 is provided at the upper end of the secondary activation furnace 12. The sides of the first feed pipe 14 and the second feed pipe 15 are both provided with a plasma jet flame generating device 16 and a steam jet ring 17. When the material enters the first feed pipe 14 and the second feed pipe 15, the activated carbon is sprayed into the activation furnace in a water vapor atmosphere by using a plasma jet flame. The discharge end of the first-level activation furnace 11 is connected to the feed end of the second feed pipe 15, and the steam generator 13 is connected to the first-level activation furnace 11 and the second-level activation furnace 12 respectively. The steam generator 13 can provide steam to the first feed pipe 14 and the second feed pipe 15. At the same time, the upper ends of the first-level activation furnace 11 and the second-level activation furnace 12 are provided with air ducts connected to the steam generator 13, and the air ducts can transport the preheated exhaust gas to the steam generator 13. The feed ports of the first feed pipe 14 and the second feed pipe 15 are both provided with quantitative feeding controllers 18, and the quantitative feeding controller 18 is used to accurately control the feed amount of the first feed pipe 14 and the second feed pipe 15.

[0043] In this embodiment, the quantitative feeding controller 18 includes a feeding mechanism 2 and a discharging mechanism 3 which are locked and connected up and down. The discharging mechanism 3 is locked and installed on the first feeding pipe 14 or the second feeding pipe 15. The feeding mechanism 2 includes a feeding bin 21, a stirring mechanism and a feeding mechanism. The inside of the feeding bin 21 is provided with a feeding chamber 211, a stirring chamber 212 and a feeding chamber 213 which are connected up and down in sequence. The stirring mechanism is arranged in the stirring chamber 212 and stirs the material in the stirring chamber 212. The feeding mechanism is arranged in the feeding chamber 213 and quantitatively transports the material to the discharging mechanism 3. Specifically, the stirring mechanism includes a main rotating shaft 22, a stirring shaft 23, a first motor 24 and a transmission member 25, the stirring shaft 23 is sleeved on the main rotating shaft 22, the main rotating shaft 22 and the stirring shaft 23 pass through the stirring chamber 212 horizontally, the stirring shaft 23 is rotatably connected to the side wall of the stirring chamber 212 through a bearing, a frame is provided on the feed bin 21, both ends of the main rotating shaft 22 are fixedly connected to the frame, the first motor 24 is installed on the feed bin 21, the transmission member 25 is rotatably connected to the side wall of the feed bin 21, and the transmission member 25 is sleeved on the stirring shaft 23, and the transmission member 25 and the stirring shaft 23 are connected by a spline, so that the stirring shaft 23 can slide relative to the transmission member 25 along the axial direction. A transmission wheel is provided on the transmission member 25, and the output end of the first motor 24 is connected to the transmission wheel through a belt drive. The stirring shaft 23 is symmetrically provided with stirring blades 231 extending in the spiral direction, and a material drop opening is provided between the stirring blades 231 and the stirring shaft 23. The first motor 24 drives the transmission member 25 and the stirring shaft 23 to rotate through a belt. During the rotation of the stirring shaft 23, the stirring blades 231 stir the material and at the same time transport the material to both sides of the stirring chamber 212, so that the material can be more evenly distributed in the stirring chamber 212, which is more conducive to the quantitative transportation of the material by the material transfer mechanism.

[0044] More preferably, a driving cavity 232 is provided in the stirring shaft 23, a fixing block 233 is provided on the side wall of the driving cavity 232, a driving block 221 is provided on the main rotating shaft 22, and the fixing block 233 has outer protrusions 234 and inner concave portions 235 arranged alternately at intervals on the side near the driving block 221, and the surfaces of the outer protrusions 234 and the inner concave portions 235 are in a wavy curved surface shape, and the side of the driving block 221 near the abutting block is provided with symmetrical and rotatably connected balls 222, and the driving block 221 is provided with a first spring 223 on the side away from the abutting block, and the first spring 223 is sleeved on the main rotating shaft 22, and the two ends of the first spring 223 abut against the side wall of the driving block 221 and the driving cavity 232, respectively. In this embodiment, there are four outer protrusions 234 and four inner concave portions 235, and two balls 222. Under the elastic force of the first spring 223, the ball 222 can always roll in contact with the side of the driving block 221. When the stirring shaft 23 rotates, it drives the fixed block 233 to rotate together. The outer protrusion 234 and the inner recess 235 on the side of the fixed block 233 alternately roll in contact with the ball 222. Since the main shaft 22 is fixedly connected, the stirring shaft 23 is pushed against by the ball 222 during rotation and will repeatedly move horizontally along the axial direction. In this way, the stirring blade 231 can be driven to translate together, so that the stirring blade 231 stirs more fully.

[0045] In this embodiment, in order to prevent the material from accumulating in the feed bin 21, an inclined shaking plate 26 is provided inside the feed chamber 211, the upper end of the shaking plate 26 is hinged to the side wall of the feed chamber 211, a wedge-shaped groove 261 is provided on the rear side wall of the shaking plate 26, a guide groove 2111 is provided on the side wall of the feed chamber 211, a sliding wedge block 2112 is provided in the guide groove 2111, the wedge block 2112 has an inclined surface matched with the bottom wall of the wedge groove 261, and the end of the wedge block 2112 is connected to the stirring shaft 23 through the adapter 27. After adopting the above structure, since the stirring shaft 23 will repeatedly translate along the axial direction during operation, the stirring shaft 23 drives the wedge block 2112 to repeatedly move horizontally through the adapter frame 27. During the movement, the inclined surface of the wedge block 2112 cooperates with the bottom wall of the wedge groove 261 to repeatedly lift the shaking plate 26. Since the upper end of the shaking plate 26 is rotatably connected to the side wall of the feed bin 21, the lower end of the shaking plate 26 can be repeatedly lifted up to generate shaking, thereby shaking off the material on the side wall of the feed bin 21 and avoiding material blockage and waste.

[0046] In this embodiment, the feeding mechanism includes a feeding roller 28 and a transmission gear 29. The two ends of the feeding roller 28 are rotatably connected to the side wall of the feeding chamber 213 through bearings. The transmission gear 29 is sleeved on the end of the feeding roller 28. The transmission member 25 is provided with a gear segment 251 with a third of the circumference. The gear end can be meshed with the transmission gear 29 for transmission. The outer circumference of the feeding roller 28 is provided with a number of evenly distributed feeding holes 281. The outer circumference of the feeding roller 28 can be slidably fitted with the feeding bin, and the material cannot automatically fall downward into the discharging mechanism 3. When feeding, when the gear segment 251 of the transmission member 25 is meshed with the transmission gear 29, the feeding roller 28 can be driven to rotate. When the opening of the feeding hole 281 faces upward, the material falls into the feeding hole 281. After that, the feeding roller 28 rotates, and when the opening of the feeding hole 281 faces downward, the material in the feeding hole 281 can fall into the discharging mechanism 3, thereby preliminarily conveying the material in a quantitative manner and preventing the material from being blocked in the discharging mechanism 3. Since the transmission member 25 is provided with a gear segment 251 with a third of the circumference, the stirring shaft 23 rotates faster during the transmission process, while the feeding roller 28 rotates slower, so that the stirring blade 231 can spread the material more evenly on the upper end of the feeding chamber 213, and the material also has more sufficient time to fill the feeding hole 281, thereby improving the feeding efficiency.

[0047] In this embodiment, the discharging mechanism 3 includes a discharging bin 31, a blocking plate 32, a material carrier 33, a lifting block 34 and a driving mechanism. A symmetrically arranged discharging cavity 311 is provided inside the discharging bin 31. The blocking plate 32 is slidably connected to the upper end of the discharging bin 31. The blocking plate 32 is used to block the discharging cavity 311. A mounting groove 312 is provided inside the side wall of the discharging bin 31. A lifting guide groove 313 is provided on the side wall of the discharging bin 31. The lifting block 34 is slidably connected to the lifting guide groove 313. A guide rod 314 slidably connected to the lifting block 34 is provided inside the lifting guide groove 313. A second spring 315 is sleeved on the guide rod 314 to resist the lifting block 34. By adjusting the elastic force of the second spring 315, the discharging amount of the material can be limited. The material loading rack 33 includes a vertical plate 331 and a horizontal plate 332 connected vertically. The vertical plate 331 is arranged in the mounting groove 312. The upper end of the vertical plate 331 is hinged with the lifting plate. The side wall of the discharge bin 31 is also provided with a limit rack 35. The limit rack 35 includes an upper limit rod 351 and a lower limit rod 352 connected to each other. The upper limit rod 351 and the lower limit rod 352 are slidably connected with the side wall of the discharge bin 31. The end of the lower limit rod 352 extends into the mounting groove 312, and the lower limit rod 352 is sleeved with a third spring 353. The third spring 353 pushes against the lower limit rod 352 to press the side wall of the vertical plate 331 to prevent the vertical plate 331 from rotating, so that the horizontal plate 332 can carry materials. The side wall of the vertical plate 331 is provided with a limit slot 333. Specifically, the driving mechanism includes a steel rope 36, a rope winding shaft 37, a pressure switch 38 and a second motor 39. Both ends of the sealing plate 32 are connected to the steel rope 36. Both sides of the outer wall of the discharge bin 31 are provided with a rotatably connected rope winding shaft 37. The end of the steel rope 36 away from the sealing plate 32 passes through the discharge bin 31 and is wound around the rope winding shaft 37. The second motor 39 is installed on the discharge bin 31. The power output end of the second motor 39 is connected to the rope winding shaft 37. The pressure switch 38 is arranged on the side walls of both sides of the discharge bin 31. The limit frame 35 is provided with a touch plate 354 on the side of the pressure switch 38. The pressure switch 38 is electrically connected to the second motor 39 on the same side.

[0048] After adopting the above structure, the blocking plate 32 will always block the discharge cavity 311 on one side. When the material enters the discharge cavity 311, the horizontal plate 332 carries the material. As the material in the discharge cavity 311 increases, the loading rack 33 gradually slides downward. When the mass of the material in the discharge cavity 311 reaches a certain amount, the end of the lower limit rod 352 is inserted into the limit groove 333, and the loading rack 33 cannot move down further. When the lower limit rod 352 is inserted into the limit groove 333, the touch plate 354 touches the pressure switch 38, and the pressure switch 38 feeds back a signal to the second motor 39 on the same side. The second motor 39 drives the rope reel 37 to rotate to reel in the steel rope 36, while the second motor 39 on the other side drives the rope reel 37 to flip and loosen the steel rope 36. When the steel rope 36 is reeled in, it pulls the blocking plate 32 to block the upper end of the discharge cavity 311. When the side wall of the blocking plate 32 is in contact with the side wall of the discharge bin 31, the blocking plate 32 pushes out the upper limit rod 351, and the lower limit rod 352 and the touch plate 354 are connected to move outward together. At this time, the second motor 39 stops operating, and the lower limit rod 352 is separated from the limit groove 333, and the loading rack 33 continues to move downward to the lower end of the discharge chamber 311, and then the loading rack 33 rotates to pour the material downward. In this process, the discharge chamber 311 on the other side can perform the above steps to load the material, thereby realizing continuous quantitative transportation of the material and further improving the material transportation efficiency.

[0049] A process for the above-mentioned activation device comprises the following steps:

[0050] (1) Adding activated carbon from the hopper into the quantitative feeding controller 18 of the first feeding pipe 14;

[0051] (2) The steam generator 13 delivers steam to the steam injection ring 17;

[0052] (3) The quantitative feeding controller 18 quantitatively delivers activated carbon to the first feeding pipe 14;

[0053] (4) The plasma jet flame generating device 16 at the end of the first feed pipe 14 sprays the activated carbon into the primary activation furnace 11 under the atmosphere of water vapor, and the activated carbon is activated by the primary activation furnace 11;

[0054] (5) The activated carbon after the primary activation treatment is transported to the quantitative feeding controller 18 of the second feeding pipe 15, and the activated carbon is quantitatively transported to the second feeding pipe 15 through the quantitative feeding controller 18 on the second feeding pipe 15;

[0055] (6) The plasma jet flame generating device 16 at the end of the second feed pipe 15 sprays the activated carbon into the secondary activation furnace 12 under the atmosphere of water vapor, and the activated carbon is subjected to secondary activation treatment by the secondary activation furnace 12;

[0056] (7) The activated carbon after the secondary activation treatment is sent to a cooling device for cooling; the soft water is preheated by heat recovery, and the activated carbon is cooled at the same time.

[0057] (8) The steam generator 13 recovers the waste heat from the tail gas.

[0058] The plasma generator may be fed with different types of carrier gases, such as nitrogen, air, argon or helium, so as to achieve a change in the activation atmosphere.

[0059] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A plasma activation device, characterized in that: The invention comprises a primary activation furnace, a secondary activation furnace and a steam generator. The primary activation furnace is provided with a first feed pipe, the secondary activation furnace is provided with a second feed pipe, the discharge end of the primary activation furnace is connected with the feed end of the second feed pipe, the steam generator is connected with the primary activation furnace and the secondary activation furnace respectively, the sides of the first feed pipe and the second feed pipe are provided with a plasma jet flame generating device and a steam jet ring, and the feed ports of the first feed pipe and the second feed pipe are provided with a quantitative feed controller.

2. A plasma activation device according to claim 1, characterized in that: The quantitative feeding controller includes a feeding mechanism and a discharging mechanism connected up and down, the discharging mechanism is installed on the first feeding pipe or the second feeding pipe, the feeding mechanism includes a feeding bin, a stirring mechanism and a feeding mechanism, and the inside of the feeding bin is provided with a feeding chamber, a stirring chamber and a feeding chamber connected up and down, the stirring mechanism is arranged in the stirring chamber and stirs the material in the stirring chamber, and the feeding mechanism is arranged in the feeding chamber and quantitatively transports the material to the discharging mechanism.

3. A plasma activation device according to claim 2, characterized in that: The stirring mechanism includes a main rotating shaft, a stirring shaft, a first motor and a transmission member, and the stirring shaft is sleeved on the main rotating shaft. The main rotating shaft and the stirring shaft horizontally pass through the stirring chamber. A frame is provided on the feed bin, and both ends of the main rotating shaft are fixedly connected to the frame. The first motor is installed on the feed bin, and the transmission member is rotatably connected to the side wall of the feed bin, and the transmission member is sleeved on the stirring shaft. The transmission member and the stirring shaft are connected by a spline, and a transmission wheel is provided on the transmission member. The output end of the first motor is connected to the transmission wheel by belt drive. The stirring shaft is symmetrically provided with stirring blades extending in the spiral direction, and a drop opening is provided between the stirring blades and the stirring shaft.

4. A plasma activation device as claimed in claim 3, characterized in that: A driving cavity is provided in the stirring shaft, a fixed block is provided on the side wall of the driving cavity, a driving block is provided on the main rotating shaft, the side of the fixed block close to the driving block has outer convex parts and inner concave parts arranged alternately at intervals, the side of the driving block close to the abutting block is provided with a rotatably connected ball, the driving block is provided with a first spring on the side away from the abutting block, the first spring is sleeved on the main rotating shaft, and the two ends of the first spring respectively abut against the driving block and the side wall of the driving cavity.

5. A plasma activation device as claimed in claim 4, characterized in that: An inclined shaking plate is provided inside the feed chamber, the upper end of the shaking plate is hinged to the side wall of the feed chamber, the rear side wall of the shaking plate is provided with a wedge-shaped groove, the side wall of the feed chamber is provided with a guide groove, a sliding wedge block is provided in the guide groove, the wedge block has an inclined surface matching the bottom wall of the wedge groove, and the end of the wedge block is connected to the stirring shaft through an adapter frame.

6. A plasma activation device as claimed in claim 3, characterized in that: The feeding mechanism includes a feeding roller and a transmission gear. The two ends of the feeding roller are rotatably connected to the side walls of the feeding chamber. The transmission gear is sleeved on the end of the feeding roller. The transmission member is provided with a gear section. The gear end can be meshed with the transmission gear for transmission. A number of evenly distributed feeding holes are provided on the outer circumferential surface of the feeding roller.

7. A plasma activation device as claimed in claim 2, characterized in that: The discharging mechanism comprises a discharging bin, a blocking plate, a loading frame, a lifting block and a driving mechanism, the discharging bin is provided with a symmetrically arranged discharging cavity, the side wall of the discharging bin is provided with a mounting groove, the side wall of the mounting groove is provided with a lifting guide groove, the lifting block is slidably connected with the lifting guide groove, the lifting guide groove is provided with a guide rod slidably connected with the lifting block, the guide rod is sleeved with a second spring that pushes against the lifting block, the loading frame comprises a vertical plate and a horizontal plate vertically connected, the vertical plate is arranged in the mounting groove, the upper end of the vertical plate is hinged with the lifting plate, the side wall of the discharging bin is also provided with a limit frame, the limit frame comprises an upper limit rod and a lower limit rod connected to each other, the upper limit rod and the lower limit rod are slidably connected with the side wall of the discharging bin, the end of the lower limit rod extends into the mounting groove, and the lower limit rod is sleeved with a third spring, the third spring pushes against the lower limit rod to press the side wall of the vertical plate, and the side wall of the vertical plate is provided with a limit groove.

8. A plasma activation device according to claim 7, characterized in that: The driving mechanism includes a steel rope, a rope winding shaft, a pressure switch and a second motor. Both ends of the sealing plate are connected to the steel rope. Both sides of the outer wall of the discharge bin are provided with a rotatably connected rope winding shaft. The end of the steel rope away from the sealing plate passes through the discharge bin and is wound around the rope winding shaft. The second motor is installed on the discharge bin. The power output end of the second motor is connected to the rope winding shaft. The pressure switch is arranged on the side walls on both sides of the discharge bin. The limit frame is provided with a touch plate on the side of the pressure switch. The pressure switch is electrically connected to the second motor on the same side.

9. A process based on the activation device according to any one of claims 1 to 8, characterized in that: The following steps are involved: (1) Adding activated carbon from a hopper into a quantitative feed controller of a first feed pipe; (2) The steam generator delivers steam to the steam injection ring; (3) a quantitative feeding controller quantitatively delivers activated carbon to the first feeding pipe; (4) The plasma jet flame generating device at the end of the first feed pipe sprays the activated carbon into the primary activation furnace under the atmosphere of water vapor, and the activated carbon is activated once in the primary activation furnace; (5) The activated carbon after the primary activation treatment is transported to the quantitative feeding controller of the second feeding pipe, and the activated carbon is quantitatively transported to the second feeding pipe through the quantitative feeding controller on the second feeding pipe; (6) The plasma jet flame generating device at the end of the second feed pipe sprays the activated carbon into the secondary activation furnace under the atmosphere of water vapor, and the activated carbon is subjected to secondary activation treatment by the secondary activation furnace; (7) sending the activated carbon after the secondary activation treatment to a cooling device for cooling; (8) The steam generator recovers waste heat from the exhaust gas.

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