Activated carbon crushing and activating device

Abstract

The invention relates to the technical field of biomass activated carbon production, and discloses an activated carbon crushing and activating device which comprises a barrel body, a motor is installed at the top of the barrel body, the output end of the motor penetrates through the barrel body and is fixedly connected with a rotating shaft, a cutting assembly is installed on the periphery of the rotating shaft, and a feeding hole is formed in the top of the motor; a pressurizing assembly is installed on the outer side of the barrel body, a curve flow guide plate is fixedly installed in the barrel body, a screen is fixedly connected to the outer side of the curve flow guide plate, and an electric butterfly valve is fixedly connected to the bottom of the barrel body. According to the present invention, the biomass active carbon can be continuously produced, the noise is low during the working, the energy consumption is low, the efficiency is high, the sealing performance is strong, the feeding, the screening and the discharging of the whole device are completed in the same equipment, the leakage-free design is adopted, and the device can be used for the regeneration of the waste active carbon only by adding the jacket on the outer cylinder or installing the heating coil on the outer cylinder.

Description

Technical Field

[0001] The invention relates to the technical field of biomass activated carbon production, in particular to a device for crushing and activating activated carbon. Background Art

[0002] Activated carbon is an amorphous carbon made from carbonaceous raw materials through carbonization and activation. It has the characteristics of large specific surface area and rich microporous structure, which makes it have large adsorption capacity, strong adsorption ability, high mechanical strength, stable chemical properties and easy regeneration.

[0003] In recent years, with the continuous deepening of research on the properties of activated carbon at home and abroad, the application fields of activated carbon have become more and more extensive, and have now expanded from the traditional adsorption field to emerging material industries such as catalyst carriers, refrigeration adsorbents, battery electrodes, natural gas storage, and hydrogen storage materials. With the increasing requirements for environmental protection, the demand for activated carbon at home and abroad is not only increasing, but also the requirements for the adsorption selectivity of activated carbon are becoming more and more specific. For example, oxidation treatment of activated carbon can make activated carbon acidic, increase the number of oxygen-containing functional groups on the surface, and improve the adsorption capacity of activated carbon for metal ions. For example, adding alkaline substances to increase the number of nitrogen-containing functional groups can improve the adsorption capacity of activated carbon for organic matter. At present, the research on the modification of activated carbon has developed to the point where different activators can accurately adsorb different toxic substances.

[0004] The domestic production process of wood activated carbon is basically carried out around the following process route: raw material pretreatment → carbonization → activation → rinsing → drying → crushing → packaging. The two processes of carbonization and activation have basically determined the width of its adsorption selectivity. If they are not improved, it will be difficult to adapt to the development of modern society and meet the targeted needs of specific users.

[0005] The preparation of activated carbon mainly consists of two processes: carbonization and activation. The activation stage plays a decisive role in the performance of activated carbon. Common methods for preparing activated carbon include physical method and chemical method.

[0006] The main purpose of the carbonization process is to obtain a carbonized product with a three-dimensional network structure. The carbonization process removes moisture and volatilization from the material, allowing the activated carbon to form initial pores. The carbonization process determines the mechanical strength and pore structure characteristics of the activated carbon.

[0007] Crushing is the last step in the production process of activated carbon. At present, due to the limitations of the crushing equipment capacity and methods of various activated carbon manufacturers on the one hand, and the lack of awareness that the activated carbon crushing process can be used to further improve the quality of activated carbon on the other hand, the existing manufacturers currently only passively crush the activated carbon according to the customer's requirements for activated carbon particle size, without realizing the effect of the physical shape of the activated carbon particles after crushing on the adsorption performance, and that the crushing process can be used as a method to further improve the performance indicators of activated carbon.

[0008] At present, the crushing equipment that domestic powdered activated carbon enterprises can choose and commonly use include: worm-type crusher, hammer crusher, pendulum mill (thunder mill), vibration mill, roller crusher, drum ball mill, etc. The principle of this type of crushing machinery is not much different from the stone mill used by our ancestors to grind rice flour. Under microscopic observation, it can be seen that the particle size of activated carbon crushed by this type of equipment has common characteristics, mostly flat, which is not conducive to liquid adsorption, affects the filtration rate, and also destroys some surface pore structures. Secondly, the phenomenon of over-crushing is serious.

[0009] Activated carbon is characterized by being a porous material with a high specific surface area and adjustable surface chemical structure. The porous structure of activated carbon determines its loose texture, specific gravity between 0.45 and 0.65, and Mohs hardness between 1 and 3, which is very close to the hardness of chalk written on a blackboard. Using mechanical crushing equipment in industry and mining to crush activated carbon is not only energy-intensive and noisy, but also like using a butcher knife to kill a chicken. Some crushing equipment will also cause pollution to the activated carbon.

[0010] In the traditional activated carbon production process, the properties and activity of the macropores, mesopores, micropores and specific surface of the activated carbon have been determined by the activation process in the production process. However, in recent years, as various scientific research institutes have deepened their research on activated carbon and its application has become more and more extensive, users have not only narrowed their requirements for the distribution of particle size, but also have higher and higher requirements for the surface activity of activated carbon. The traditional crushing device can only achieve the purpose of crushing, but cannot simultaneously perform secondary pore expansion and modification on the activated carbon and enhance the physical + chemical adsorption capacity of the activated carbon. Summary of the invention

[0011] In view of the shortcomings of the prior art, the present invention provides an activated carbon crushing and activation device, which solves the problem that the activated carbon treatment method in the prior art cannot meet the current social development demand for activated carbon varieties.

[0012] To achieve the above objectives, the present invention is implemented through the following technical solutions: an activated carbon crushing and activation device, comprising a barrel body, a motor is installed on the top of the barrel body, the output end of the motor passes through the barrel body and is fixedly connected to a rotating shaft, a cutting assembly is installed on the periphery of the rotating shaft, a feeding hole is opened on the top of the motor, a pressurizing assembly is installed on the outside of the barrel body, a curved guide plate is fixedly installed inside the barrel body, a screen is fixedly connected to the outside of the curved guide plate, and an electric butterfly valve is fixedly connected to the bottom of the barrel body.

[0013] Preferably, a support assembly is installed inside the barrel body, the rotating shaft is rotatably connected to the middle part of the support assembly, the support assembly includes a support plate, a flange is fixedly connected to the top of the support plate, an axial positioning groove is fixedly connected to the top of the flange, the bottom of the rotating shaft and the axial positioning groove are clamped together, a slag discharge port is formed between the multiple support plates, a slag discharge pipe is connected to the bottom of the slag discharge port, and the other end of the slag discharge pipe passes through the side wall of the barrel body.

[0014] Preferably, the cutting assembly comprises cutter one, cutter two and cutter three, and the cutter one, cutter two and cutter three are all fixedly connected to the outside of the rotating shaft and form different angles with the axis.

[0015] Preferably, a plurality of fixing rings are fixedly connected to the inner wall of the barrel body, the fixing rings are connected by a stand, a plurality of connecting buckles are installed on the outer side of the stand, the screen is installed on the inner side of the fixing ring and the connecting buckle, and a plurality of leakage holes are opened in the middle of the fixing ring.

[0016] Preferably, the pressurizing assembly comprises a connecting pipe, the connecting pipe is installed on the top of the barrel body, a nozzle is installed at one end of the connecting pipe located inside the barrel body, and the outer end of the connecting pipe is connected to an external air source.

[0017] Preferably, a metering tank is installed above the connecting pipe, and the bottom of the metering tank is connected to the connecting pipe through a control valve.

[0018] Preferably, a liquid level gauge is installed in the middle of the metering tank to display the liquid level inside the metering tank.

[0019] Preferably, a pressure gauge and a temperature gauge are installed on the top of the barrel body, which are used to display the internal air pressure and temperature of the barrel body respectively.

[0020] Preferably, a jacket is provided on the outer periphery of the barrel, a heat source inlet is provided at the lower outer side of the jacket, and a heat source outlet is provided at the upper outer side of the jacket.

[0021] Preferably, a viewing mirror is provided on the top of the barrel body, and the curved guide plate is composed of four mutually symmetrical trumpet-shaped sheets.

[0022] Working principle: The corn cob activated carbon that needs to be crushed is injected into the barrel from the feed hole, and then the drive motor drives the shaft to rotate slowly, so that the cutting assembly rotates as a whole to crush the activated carbon.

[0023] During this period, the compressed gas from the air compressor enters the barrel from the connecting pipe, and the control valve under the metering tank is opened. The adjusted activator is atomized by the nozzle under the drive of high-speed airflow and enters the barrel. The direction of the nozzle can be observed and adjusted through the sight glass. The atomization fan area must be greater than or equal to the cross-sectional area of ​​the barrel.

[0024] After the input of the modifying liquid or activating agent reaches the required amount, the control valve is closed, and the compressed air flow from the air compressor continues to provide momentum and pressure to the material in the cavity, and the pressure is adjusted by the air compressor.

[0025] When the input amount of the first batch of activated carbon reaches 60%, the motor speed is adjusted to 5000 rpm. Under the condition of high-speed rotation of the cutting component, 80% of the material in the cavity boils upward from the bottom through the curved guide plate and fully contacts with the activator from above and collides with each other. The finished activated carbon particles with the required mesh size pass through the screen in the pressure and atomized atmosphere, and flow into the bottom of the barrel between the screen and the barrel. When the speed of the cutting component is as high as 5000-6000 rpm, the atomized chemical activator liquid particles reach the most complete contact with the activated carbon particles, and the following physical and chemical reactions occur, thereby realizing the treatment of the activated carbon.

[0026] After a certain period of reaction and crushing, the electric butterfly valve at the bottom is opened to release the pressure in the chamber, and the finished activated carbon stored at the bottom of the cylinder flows into the packaging material at the lower part.

[0027] The waste residue deposited at the bottom of the screen can be discharged through the residue discharge pipe, which is convenient for subsequent activated carbon treatment.

[0028] When using this device for activated carbon regeneration, the activated carbon is heated by injecting an external heat source into the jacket. The heat source enters through the heat source inlet, fills the jacket, and is discharged from the heat source outlet. The heat source can be thermal oil or steam. The temperature and pressure inside the barrel can be displayed by the pressure gauge and temperature gauge on the top of the barrel, and the liquid capacity and consumption inside the metering tank can be reflected by the liquid level meter.

[0029] The present invention provides a device for crushing and activating activated carbon. It has the following beneficial effects: 1. The present invention can continuously produce biomass activated carbon, and has low noise, low energy consumption, high efficiency and strong airtightness during operation. The entire device from feeding, screening and discharging is completed in the same equipment, and is designed to be leak-free.

[0030] 2. The operating parts used in the present invention are simple and direct. An electric butterfly valve is provided below the discharge port. The pressurized material enters the packaging bag directly through the electric butterfly valve from the discharge port at the bottom of the device, without the need for secondary sorting of the material and other auxiliary devices.

[0031] 3. In the present invention, the feed is conveyed by spiral conveying, and there is no requirement for the particle size of the material, so as to adapt to the more complex activated carbon treatment requirements.

[0032] 4. The present invention has its own cleaning function. When cleaning the net, you only need to open the bottom butterfly valve and let the cutter rotate at high speed for 1 to 2 minutes, which reduces the complexity of operation and greatly improves the practicability of the equipment.

[0033] 5. The present invention can also be used for the regeneration of waste activated carbon. It only needs to add a jacket to the outer cylinder or install a heating coil on the outer cylinder. During operation, according to the properties of the adsorbents on the waste activated carbon, an external heat source is introduced to heat the cylinder to the required desorption temperature range, and the air compressor is used to increase the pressure, so that the regeneration rate of the waste activated carbon can reach more than 90%. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 2 Schematic diagram of the internal flow field distribution in the present invention; Figure 3 It is a structural schematic diagram of the curved guide plate in the present invention; Figure 4 It is a schematic diagram of the installation of the curved guide plate in the present invention; Figure 5 Schematic diagram of the position distribution of the curved guide plates in the present invention; Figure 6 It is a schematic diagram of the flow field section on the upper part of the curved guide plate in the present invention; Figure 7 Schematic diagram of flow field distribution around the curved guide plate in the present invention; Figure 8 It is a schematic diagram of the cross section of the flow field at the bottom of the curved guide plate in the present invention; Fig. 9 It is a schematic diagram of the installation of the screen in the present invention; Fig.10 It is a structural schematic diagram of the fixing ring in the present invention; Fig.11 It is a schematic diagram of the opening position of the leakage hole in the present invention; Fig.12 This is a schematic diagram of the installation of the connecting buckle in the present invention; Fig.13 It is a schematic diagram of the structure of the cutting assembly in the present invention; Fig.14A top view of the structure of the support assembly in the present invention; Fig.15 It is a structural side view of the support assembly in the present invention.

[0035] Among them, 1. Motor; 2. Rotating shaft; 3. Cutting assembly; 3-1. Cutter one; 3-2. Cutter two; 3-3. Cutter three; 4. Feed hole; 5. Connecting pipe; 6. Measuring tank; 7. Control valve; 8. Nozzle; 9. Sight glass; 10. Curved guide plate; 11. Screen; 11-1. Fixing ring; 11-2. Stand; 11-3. Connecting buckle; 11-4. Leakage hole; 12. Barrel; 13. Electric butterfly valve; 14. Slag discharge pipe; 15. Jacket; 15-a. Heat source inlet; 15-b. Heat source outlet; 16. Pressure gauge; 17. Temperature gauge; 18. Liquid level gauge; 19. Support assembly; 19-1. Axis positioning groove; 19-2. Flange; 19-3. Support plate; 19-4. Slag discharge port. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Example: Please refer to the attached Figure 1 , Attachment Figure 2 and attached Fig.13 The embodiment of the present invention provides an activated carbon crushing and activation device, including an outer barrel body 12 and a screen 11. A motor 1 is installed on the top of the outer barrel body 12. The output end of the motor 1 passes through the outer barrel body 12 and is fixedly connected to a rotating shaft 2. A cutting assembly 3 is installed on the periphery of the rotating shaft 2. The cutting assembly 3 includes a cutter 1 3-1, a cutter 2 3-2 and a cutter 3-3. The cutter 1 3-1, the cutter 2 3-2 and the cutter 3-3 are all fixedly connected to the outside of the rotating shaft 2 and have different angles with the axis. The diameter of the cutter 1 3-1 is 100mm away from the screen in the cylinder, and the angle between the knife surface and the cross section of the screen cylinder is 15°. The cutter is trapezoidal, with a bottom side from the axis as wide as wide, a bottom side width of 100-150mm, and a top side width of 50-65mm. The diameter of the second cutter 3-2 is 200mm away from the screen in the cylinder, the angle between the knife face and the cut surface of the screen cylinder is 17°, the bottom width is 100-150mm, and the top width is 50-62mm. The diameter of the third cutter 3-3 is 300mm away from the screen in the cylinder, the cutter is bent into an L shape on the basis of the trapezoid, the angles between the knife face and the cut surface of the screen in the cylinder are 15° and 85°, and the upturned height is 250mm.

[0038] Please refer to the attached Figure 2 and attached Fig.13 The top view angle of the cutter 1 3-1 and the cutter 2 3-2 after installation is 90°. The function of the two sets of blades is to use the torque of high-speed rotation to gradually cut and crush the activated carbon. At the same time, the blade surface generates an upward normal force due to the high-speed rotation of the blade. The normal force boils the granular material with a slightly larger specific gravity toward the top of the cavity along the axial direction. Secondly, the high-speed rotation of the cutter generates centrifugal force on the material particles, which causes the material to swirl around along the edge of the cutter, forcing the material to collide with the screen 11 and break. Secondly, in the closed cavity, when the rotation speed of the two sets of blades reaches 10,000 rpm, a wind pressure of nearly 0.6Mpa / cm can be produced, which is conducive to the secondary opening of the activated carbon particles.

[0039] Please refer to the attached Figure 1 -Attached Fig.13 The main function of the cutter 3-3 is to break the finer particles that are gathered near the rotating material due to centrifugal force and disperse them to the surrounding screens 11.

[0040] Please refer to the attached Figure 1 -Attached Figure 8 The motor 1 is provided with a feed hole 4 at the top, a pressurizing assembly is installed on the outside of the outer barrel 12, and a curved guide plate 10 is fixedly installed inside the outer barrel 12. The curved guide plate 10 is composed of four symmetrical trumpet-shaped thin sheets. The diameter of the upper back arc of each sheet is Ra, and its lower inner arc is Rb=Ra1 / 10, and Rc=Ra1 / 20; the upper circumference of each sheet is 1 / 2 of the circumference of the bottom side, and the height is 2 / 3 of the circumference of the bottom. The curved guide plate is welded on two circular rings, and the diameter of the lower circular ring is 1 / 2 of the diameter of the upper circular ring. The assembly spacing between each curved guide plate on the lower circumference is 5cm.

[0041] Please refer to the attached Fig. 9 -Attached Fig.12 The outer side of the curved guide plate 10 is fixedly connected with a screen 11, and the inner wall of the outer barrel 12 is fixedly connected with a plurality of fixed rings 11-1. The fixed rings 11-1 are connected by a stand 11-2. A plurality of connecting buckles 11-3 are installed on the outer side of the stand 11-2. The screen 11 is installed on the inner side of the fixing ring 11-1 and the connecting buckle 11-3. A plurality of leakage holes 11-4 are opened in the middle of the fixing ring 11-1. The screen 11 not only controls the size of the activated carbon particles in the device, but also has the function of crushing, so the frame of the entire screen needs to have a certain strength.

[0042] The screen 11 has three layers. The first and third layers are support and protection layers, and the screen hole is 2cm*2cm. The activated carbon screen working layer is between the two layers to facilitate plasticity and installation.

[0043] The fixing ring 11-1 is welded to the frame stand 11-2, and the entire frame is connected to the outer barrel 12 by a connecting buckle 11-3. The bottom of the fixing ring 11-1 is designed as a spherical head. The purpose is to concentrate impurities with a specific gravity greater than that of activated carbon at the bottom of the kettle under the high-frequency vibration generated by the rotation of the cutter. The diameter of the head is the same as the diameter of the screen cylinder. Four symmetrical leakage holes 11-4 are opened around the spherical head. A screen is also provided on the leakage hole 11-4. The sum of the areas of the four holes shall not be greater than 1 / 3 of the total area of ​​the flange so as not to destroy its strength.

[0044] Please refer to the attached Figure 1 -Attached Figure 2 An electric butterfly valve 13 is fixedly connected to the bottom of the outer barrel body 12. After the processed activated carbon is filtered out from the screen 11, it falls to the bottom of the outer barrel body 12. After the electric butterfly valve 13 is opened, the finished activated carbon is discharged.

[0045] Please refer to the attached Figure 1 , Attachment Figure 2 , Attachment Fig.14 and attached Fig.15 A support assembly 19 is installed inside the outer barrel body 12, and the rotating shaft 2 is rotatably connected to the middle part of the support assembly 19. The support assembly 19 includes a support plate 19-3, a flange 19-2 is fixedly connected to the top of the support plate 19-3, an axial positioning groove 19-1 is fixedly connected to the top of the flange 19-2, the bottom of the rotating shaft 2 is clamped with the axial positioning groove 19-1, and a slag discharge port 19-4 is formed between multiple support plates 19-3, a slag discharge pipe 14 is connected to the bottom of the slag discharge port 19-4, and the other end of the slag discharge pipe 14 passes through the side wall of the outer barrel body 12, the axial positioning groove 19-1 is welded to the flange 19-2, the flange 19-2 is connected to the support plate 19-3, and the support plate 19-3 is welded to the bottom of the kettle. The spacing between the four support plates 19-3 is the diameter of the slag discharge port 19-4, so that impurities with a specific gravity greater than that of activated carbon concentrated at the bottom of the kettle can be discharged through the slag discharge port 19-4.

[0046] Please refer to the attached Figure 1 -Attached Figure 2The pressurizing component includes a connecting pipe 5, which is installed on the top of the outer barrel body 12. A nozzle 8 is installed at one end of the connecting pipe 5 located on the inner side of the outer barrel body 12, and the outer end of the connecting pipe 5 is connected to the external air source; a metering tank 6 is also installed above the connecting pipe 5, and the bottom of the metering tank 6 is connected to the connecting pipe 5 through a control valve 7; a liquid level gauge 18 is installed in the middle of the metering tank 6 for displaying the liquid level inside the metering tank 6. When activating activated carbon, the adjusted acidic or alkaline activator is injected into the metering tank 6, and then the control valve 7 is opened to allow the activator to enter the connecting pipe 5, and air is injected through the external air compressor, so that the activator and the air pass through the nozzle 8 together. The activator is atomized through the nozzle 8 and contacts the boiling activated carbon particles. The heat generated by the friction of the activated carbon in the closed cavity under the promotion of the high-speed airflow provides activation conditions for modification. In the process of gradual crushing of the activated carbon, the surface of the activated carbon particles reacts chemically with the modified liquid particles, so that the pH value of the functional groups on the surface of the activated carbon increases or decreases, and its acidity or alkalinity is increased or weakened, thereby realizing the modification of the activated carbon and the increase of the surface functional groups. After the input of the modified liquid or activator reaches the required metering, the control valve 7 is closed, and the compressed airflow from the air compressor continues to provide momentum and pressure to the material in the cavity, and the pressure is adjusted by the air compressor.

[0047] Please refer to the attached Figure 1 and attached Figure 2 A pressure gauge 16 and a thermometer 17 are installed on the top of the outer barrel body 12, which are used to display the internal air pressure and temperature of the outer barrel body 12 respectively; a jacket 15 is provided on the outer periphery of the outer barrel body 12, a heat source inlet 15-a is provided at the lower outer side of the jacket 15, and a heat source outlet 15-b is provided at the upper outer side of the jacket 15; a sight glass 9 is provided on the top of the outer barrel body 12.

[0048] If used for activated carbon regeneration, the heat source inlet 15-a is connected to an external heat source, and the heat source enters from the heat source inlet 15-a arranged below the jacket 15 and is discharged from the heat source outlet 15-b arranged above the jacket. The heat source can be selected from heat transfer oil or steam. The temperature and pressure inside the cavity can be read from the pressure gauge 16 and the temperature gauge 17 arranged at the top.

[0049] Internal flow field of AC crushing and activation device See attached Figure 2 Under relatively mild conditions, the cylinder temperature of the AC crushing and activation device was set at 45°C, the cutter speed was 4000 rpm, the material density was selected as 0.45 tons / cubic meter, the viscosity was selected as 0.22, and the air inlet pressure of the upper atomizing nozzle was selected as 0.3Mpa. The overall CFD simulation modeling of the AC crushing and activation device cavity was carried out, and the distribution state of the internal flow field can be seen.

[0050] In the closed cylinder, three pairs of high-speed rotating cutters with cutting angles of 15, 17 and 85 degrees at the bottom cut the activated carbon while causing the material to generate a normal force that boils upward (see attached). Figure 2 At the same time, the centrifugal force generated by the high-speed rotation of the cutter causes the material to generate a radial force that swirls around the edge of the cutter (see the attached figure). Figure 2 Secondly, the high-speed rotation of the cutter causes the material to boil upwards, while at the same time creating a vacuum turbulence area under the cutter (see the attached figure). Figure 2 The formation of vacuum turbulence area prompts the material to be backfilled continuously, and the simulation model shows that the temperature in this area is the highest.

[0051] The activated carbon particles crushed by the cutter to the product particle size pass through the screen 11 under the action of centrifugal force and the pressure in the cavity and flow to the bottom of the barrel 12 for accumulation. Some particles hit the screen 11 and are broken, then pass through the screen 11 and flow to the bottom of the barrel 12 for accumulation. The relatively heavy material continues to spray toward the top driven by momentum (see attached). Figure 6 -Attached Figure 8 ), in the process of spraying to the top, 80% of the activated carbon particles are blocked by the curved guide plate 10, resulting in the Coanda effect, the density increases and the flow rate increases (please refer to the attached Figure 2 Arrow ④); Nearly 20% of the material passes through the gap between the two curved guide plates and continues to boil upward. The upward boiling particles are entrained and accelerated by the gas injected from the atomizing nozzle (please refer to the attached Figure 2 and attached Figure 7 Arrow ⑤); Activated carbon particles in the rising air flow (see Appendix Figure 2 The arrow ④ in the figure) and the activated carbon particles in the downward airflow (please refer to the attached Figure 2 The arrow ⑤ in the figure produces a collision above the curved guide plate 10, and the collision density and intensity gradually decrease from the axis to the circumference of the screen 11 until it disappears.

[0052] Among them, 90% of the chemical reactions are completed in this area. Secondly, the heat generated in this area is second only to the heat generated by the high-speed rotation of the bottom cutter to crush the activated carbon.

[0053] Since the density of the rising airflow in the curved guide plate 10 is greater than the density at the back of the curved guide plate 10, a low-pressure vortex is generated at the back of the four curved guide plates 10 (see attached figure). Figure 2 and attached Figure 7 Arrow ⑥ in the figure), which makes the airflow from the upper part to the lower part (please refer to the attached Figure 2 and attached Figure 7The arrows ④, ⑤, ⑥ in the figure produce the Coanda effect again in this area. The activated carbon particles carried by the downward airflow and the rising airflow (please refer to the attached Figure 2 The arrows ① in the figure collide with each other and with the screen 11 in this narrow area, forcing the activated carbon particles that have reached the crushing mesh to escape out of the screen 11 at an accelerated speed.

[0054] CFD simulation modeling shows that there is a turbulent flow caused by a weak negative pressure in the space above the airflow injected by the atomizing nozzle 8 and the feed inlet (please refer to the attached Figure 2 This is beneficial to the distribution of materials in the cavity when replenishing materials.

[0055] The activated carbon in the cavity of this device produces more than three kinds of crushing phenomena under the action of mechanical force and fluid mechanics effect. The high-speed rotation of the blade produces mechanical shearing and crushing; the airflow produces mutual impact and crushing between material particles; the high-speed rotation of the blade provides kinetic energy to the material to produce impact and crushing between the material and the screen 11, and the airflow provides momentum to produce collision and crushing between the material and the screen 11.

[0056] The design of the curved guide plate 10 allows the cross-sectional area of ​​the rising and boiling activated carbon particles to shrink rapidly and increase the flow rate; similarly, the activated carbon particles in the process of being pressed downward are again increased in momentum by the narrow curved surface gap created by the back of the curved guide plate, thereby increasing the probability of collision between the upper and lower particles. At the same time, for activated carbon particles whose smaller particles are more likely to agglomerate, the curved guide plate acts as a disperser, and the size of the product particle size is controlled by the screen.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An activated carbon pulverizing and activating device, comprising a barrel (12), characterized in that: A motor (1) is installed on the top of the barrel body (12); the output end of the motor (1) passes through the barrel body (12) and is fixedly connected to a rotating shaft (2); a cutting assembly (3) is installed on the periphery of the rotating shaft (2); a feeding hole (4) is opened on the top of the motor (1); a pressurizing assembly is installed on the outside of the barrel body (12); a curved guide plate (10) is fixedly installed inside the barrel body (12); a screen (11) is fixedly connected to the outside of the curved guide plate (10); and an electric butterfly valve (13) is fixedly connected to the bottom of the barrel body (12).

2. The activated carbon pulverizing and activating device according to claim 1 is characterized in that: A support assembly (19) is installed inside the barrel body (12); the rotating shaft (2) is rotatably connected to the middle of the support assembly (19); the support assembly (19) comprises a support plate (19-3); a flange (19-2) is fixedly connected to the top of the support plate (19-3); an axial positioning groove (19-1) is fixedly connected to the top of the flange (19-2); the bottom of the rotating shaft (2) is snap-fitted to the axial positioning groove (19-1); a slag discharge port (19-4) is formed between the plurality of support plates (19-3); a slag discharge pipe (14) is connected to the bottom of the slag discharge port (19-4); the other end of the slag discharge pipe (14) passes through the side wall of the barrel body (12).

3. The activated carbon pulverizing and activating device according to claim 1 is characterized in that: The cutting assembly (3) comprises a cutter one (3-1), a cutter two (3-2) and a cutter three (3-3); the cutter one (3-1), the cutter two (3-2) and the cutter three (3-3) are all fixedly connected to the outside of the rotating shaft (2) and form different angles with the axis.

4. The activated carbon pulverizing and activating device according to claim 1 is characterized in that: A plurality of fixing rings (11-1) are fixedly connected to the inner wall of the barrel body (12); the fixing rings (11-1) are connected to each other via a stand (11-2); a plurality of connecting buckles (11-3) are installed on the outer side of the stand (11-2); the screen (11) is installed on the inner side of the fixing ring (11-1) and the connecting buckles (11-3); and a plurality of material leakage holes (11-4) are opened in the middle of the fixing ring (11-1).

5. The activated carbon pulverizing and activating device according to claim 1 is characterized in that: The pressurizing assembly comprises a connecting pipe (5), wherein the connecting pipe (5) is mounted on the top of the barrel body (12), a nozzle (8) is mounted on one end of the connecting pipe (5) located inside the barrel body (12), and an outer end of the connecting pipe (5) is connected to an external air source.

6. The activated carbon pulverizing and activating device according to claim 5, characterized in that: A metering tank (6) is also installed above the connecting pipe (5), and the bottom of the metering tank (6) is connected to the connecting pipe (5) via a control valve (7).

7. The activated carbon pulverizing and activating device according to claim 6, characterized in that: A liquid level gauge (18) is installed in the middle of the metering tank (6) for displaying the liquid level inside the metering tank (6).

8. The activated carbon pulverizing and activating device according to claim 1 is characterized in that: A pressure gauge (16) and a temperature gauge (17) are installed on the top of the barrel body (12), which are used to display the internal air pressure and temperature of the barrel body (12), respectively.

9. The activated carbon pulverizing and activating device according to claim 1, characterized in that: The barrel body (12) is provided with a jacket (15) on its outer periphery, a heat source inlet (15-a) is provided at the lower outer portion of the jacket (15), and a heat source outlet (15-b) is provided at the upper outer portion of the jacket (15).

10. The activated carbon pulverizing and activating device according to claim 1, characterized in that: The top of the barrel body (12) is provided with a viewing mirror (9), and the curved guide plate (10) is composed of four symmetrical trumpet-shaped thin sheets.

Images