A method and device for preparing supported activated carbon

Abstract

The present invention discloses a preparation method and a preparation device of a loaded activated carbon, comprising the following steps: S01, inspecting and screening coconut shell raw materials, and crushing them after screening to obtain carbon powder; S02, stirring and mixing the carbon powder and a binder to obtain a plastic mixed carbon material; S03, sending the mixed carbon material into an extruder for extrusion granulation, and sending it into a hot air furnace for high-temperature plasticization to obtain a carbon coarse material; S04, sending the carbon coarse material into a steam engine for high-temperature activation to obtain activated carbon. The preparation method and preparation device of the loaded activated carbon provided by the present invention directly discharge the prepared activated carbon into an acid leaching kettle for acid leaching, and clean the small particles on the surface of the activated carbon during the acid leaching to separate the small particles from the activated carbon, and the separation and acid leaching are carried out simultaneously, which can reduce the intermediate primary drying process, shorten the process time, accelerate production and reduce costs.

Description

Technical Field

[0001] The invention relates to the technical field of activated carbon preparation, and in particular to a method and a device for preparing supported activated carbon. Background Art

[0002] Loaded activated carbon is prepared by subjecting activated carbon to subsequent special treatments such as acid washing, alkali washing and other impregnation treatments to obtain modified activated carbon.

[0003] According to patent number CN111686690A, publication (announcement) date: 2020-09-22, a field of activated carbon loading technology disclosed, specifically relates to a loaded activated carbon and a preparation method and device thereof. The preparation method of loaded activated carbon provided by the present invention comprises the following steps: vacuumizing a reactor containing activated carbon, and then introducing an impregnation liquid into the reactor for impregnation treatment to obtain loaded activated carbon. The present invention vacuumizes a reactor containing activated carbon to reduce the air pressure in the activated carbon pores, so that a negative pressure environment is formed in the activated carbon pores. The mass transfer process of activated carbon impregnation is enhanced by pressure difference, which can promote the uniform adsorption of active components in the impregnation liquid onto the adsorption sites on the surface of activated carbon, increase the loading amount of active components in activated carbon, and obtain loaded activated carbon with good performance; and the method provided by the present invention is simple to operate and has high production efficiency. The entire preparation process is carried out in a sealed environment, and no activated carbon dust and chemicals escape, meeting the requirements of clean production.

[0004] In the prior art including the above-mentioned patent, the preparation process of acid washing of activated carbon includes the steps of fine washing and dust removal and acid solution impregnation, but the fine washing and dust removal and acid solution impregnation usually require interspersed drying steps to ensure that the acid solution can be fully absorbed during acid immersion, but drying is required after acid solution impregnation, which will extend the production timeline of the overall process and increase the processing cost. Summary of the invention

[0005] The purpose of the present invention is to provide a method and a device for preparing supported activated carbon, aiming to solve the problem that acid solution impregnation requires multiple dryings and a long production time.

[0006] In order to achieve the above object, the present invention provides the following technical solution: a method for preparing supported activated carbon, comprising the following steps:

[0007] S01, inspecting and screening the coconut shell raw material, and crushing it after screening to obtain carbon powder;

[0008] S02, stirring and mixing the carbon powder and the binder to obtain a plastic mixed carbon material;

[0009] S03, sending the mixed carbon material into an extruder for extrusion granulation, and sending it into a hot air furnace for high-temperature plasticization to obtain a carbon coarse material;

[0010] S04, sending the carbon raw material into a steam engine for high-temperature activation to obtain activated carbon;

[0011] S05, sending the activated carbon into the acid leaching kettle, and pressing the activated carbon under the liquid surface to rub against each other, cleaning the small particles on the surface of the activated carbon while performing acid leaching;

[0012] Boil the activated carbon being acid-leached and separate the small particles and activated carbon;

[0013] S06. Collect and dry the sunken activated carbon to obtain loaded activated carbon.

[0014] A device for preparing supported activated carbon, S05 in the above scheme, comprising:

[0015] an acid leaching kettle on which a rotating shaft is disposed;

[0016] A discharging mechanism, comprising an inner spiral plate and a discharging frame arranged on the rotating shaft;

[0017] A feeding mechanism, comprising a feeding bin and an outer layer threaded plate arranged on the inner spiral plate, wherein the spiral rotation directions of the two are opposite;

[0018] The rotating shaft is driven to rotate, so as to drive the inner spiral plate to lift the activated carbon as it rotates, and to drive the outer threaded plate to press down the activated carbon as it rotates.

[0019] Preferably, a limiting cover is provided in the acid leaching kettle, and a filter ring is provided in the liquid level tank opened on the limiting cover. After the acid leaching liquid is driven into the liquid level tank, it passes through the filter ring to eliminate bubbles.

[0020] Preferably, a partition cover is provided between the inner spiral plate and the outer threaded plate, a retraction ring is provided on the inner spiral plate, and a flat water outlet facing the liquid surface is opened on the outer threaded plate, and the flat water outlet is fixedly connected to the first end of the retraction ring.

[0021] Preferably, a drain assembly is provided at the first end of the acid leaching kettle, which includes a drain frame rotatably connected to the discharge frame, and the drain frame is driven to rotate to separate the acid leaching liquid and make the acid leaching liquid drip into the feed bin along the drain holes opened on the discharge frame.

[0022] Preferably, the drain frame is provided with separation grooves in a circumferential array, and the drain frame rotates intermittently to drive the activated carbon to separate from the drain frame along the separation grooves due to centrifugal force.

[0023] Preferably, a plurality of open grooves are provided on the outer threaded plate along the spiral line, and through holes are provided between the plurality of open grooves.

[0024] Preferably, the outer threaded plate is provided with inclined paddle plates in a circumferential array, and the paddle plates rotate with the outer threaded plate to push liquid toward the conical surface opened on the inner wall of the limiting cover.

[0025] Preferably, the paddle is rotatably connected to the outer threaded plate, which is assembled at the following two stations:

[0026] First station: the outer threaded plate rotates forward to press down the activated carbon, and the paddle plate turns over to transfer the liquid to the bottom of the acid leaching kettle;

[0027] Second station: the outer threaded plate flips up to lift the activated carbon, and the paddle plate flips the activated carbon toward the top of the acid leaching kettle to limit it.

[0028] Preferably, a spiral drive plate is provided at the first end of the paddle board, and limit strips are symmetrically provided on the paddle board, and the spiral drive plate drives the paddle board to flip over as the water flow impacts.

[0029] In the above technical scheme, a preparation method and preparation device of a loaded activated carbon provided by the present invention have the following beneficial effects: the prepared activated carbon is directly discharged into an acid leaching kettle for acid leaching, and the small particles on the surface of the activated carbon are cleaned during the acid leaching to separate the small particles from the activated carbon. The separation and acid leaching are carried out simultaneously, which can reduce the intermediate drying process, shorten the process time, speed up production and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0031] Figure 1 An overall schematic diagram of an acid leaching kettle provided in an embodiment of the present invention;

[0032] Figure 2 An exploded schematic diagram of a drain assembly provided in an embodiment of the present invention;

[0033] Figure 3 for Figure 2 The enlarged schematic diagram at A in the middle;

[0034] Figure 4 A schematic diagram of the overall explosion of an acid leaching kettle provided in an embodiment of the present invention;

[0035] Figure 5 for Figure 4 The enlarged schematic diagram of point B in the middle;

[0036] Figure 6A schematic diagram of an explosion of structures such as an acid leaching kettle and a confinement cover provided in an embodiment of the present invention;

[0037] Figure 7 An exploded schematic diagram of an outer threaded plate and an inner spiral plate provided in an embodiment of the present invention;

[0038] Figure 8 for Figure 7 The enlarged schematic diagram at C in the middle;

[0039] Fig. 9 A schematic cross-sectional view of an acid leaching kettle provided in an embodiment of the present invention;

[0040] Fig.10 for Fig. 9 The enlarged schematic diagram at D in the middle;

[0041] Fig.11 for Fig. 9 Enlarged schematic diagram at point E in the middle.

[0042] Description of reference numerals:

[0043] 1. Acid leaching kettle; 10. Rotating shaft; 11. Upper cover plate; 12. Feed bin; 13. Limiting cover; 131. Collecting trough; 132. Conical surface; 14. Guide hemisphere; 141. Guide plate; 15. Conical ring plate; 16. Heating roller; 2. Feeding mechanism; 21. Outer threaded plate; 210. Flat water outlet; 211. Open groove; 212. Through hole; 22. Separation cover; 23. Paddle plate; 231. Limiting strip; 232. Spiral drive plate; 233. Rotating ring; 3. Discharging mechanism; 31. Discharging frame; 311. Drain hole; 32. Inner spiral plate; 33. Retracting ring; 4. Drain assembly; 41. Drain frame; 411. Meshing teeth; 42. Turntable; 421. Semi-ring teeth; 43. Relay gear; 51. Filter ring; 511. Inclined protrusion; 512. Filter plate; 52. Infusion tube. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0045] A method for preparing supported activated carbon comprises the following steps:

[0046] S01, inspecting and screening the coconut shell raw material (the raw material after carbonization) (to screen out the uncarbonized particles contained therein), and crushing the raw material after screening to obtain carbon powder;

[0047] S02, stirring and mixing the carbon powder and the binder to obtain a plastic mixed carbon material;

[0048] S03, sending the mixed carbon material into an extruder for extrusion granulation, and sending it into a hot air furnace for high-temperature plasticization to obtain a carbon coarse material;

[0049] S04, sending the carbon raw material into a steam engine for high-temperature activation to obtain activated carbon;

[0050] S05, sending the activated carbon into the acid leaching kettle, and pressing the activated carbon into the liquid surface to rub against each other, so as to clean the small particles on the surface of the activated carbon through the friction between multiple activated carbons, and maintaining the acid leaching while cleaning to change the pH value of the activated carbon;

[0051] Boil the activated carbon being acid-leached. The boiling process will accelerate the acid-leaching process and separate small particles and activated carbon for later collection steps.

[0052] S06. Collect and dry the sunken activated carbon to obtain loaded activated carbon.

[0053] In the above technical scheme, the prepared activated carbon is directly discharged into the acid leaching kettle for acid leaching. During the acid leaching, the small particles on the surface of the activated carbon are cleaned to separate the small particles from the activated carbon. The separation and acid leaching are carried out simultaneously, which can reduce the intermediate drying process, shorten the process time, speed up production and reduce costs. Example

[0054] like Figure 1-11 As shown, a preparation device for supported activated carbon comprises:

[0055] Acid leaching kettle 1, on which a rotating shaft 10 is arranged;

[0056] The discharging mechanism 3 includes an inner spiral plate 32 and a discharging frame 31 disposed on the rotating shaft 10;

[0057] The feeding mechanism 2 comprises a feeding bin 12 and an outer layer threaded plate 21 disposed on an inner spiral plate 32, wherein the spiral rotation directions of the two are opposite;

[0058] The rotating shaft 10 is driven to rotate, so as to drive the inner spiral plate 32 to lift the activated carbon as it rotates, and to drive the outer threaded plate 21 to press down the activated carbon as it rotates.

[0059] Specifically, an upper cover plate 11 is provided at the top of the acid leaching kettle 1, a rotating shaft 10 is provided on the upper cover plate 11 and is fixedly connected to the output end of the motor through a coupling, so that the rotating shaft 10 is driven to rotate by the motor, a discharging frame 31 is provided on the feeding bin 12, the feeding bin 12 is fixedly connected to the inner spiral plate 32, the discharging frame 31 is fixedly connected to the outer threaded plate 21, a conical ring plate 15 is provided on the discharging frame 31, and the conical ring plate 15 moves the activated carbon input from the feeding bin 12 toward the outer threaded plate 21 along the conical ring plate 15. When in use, the acid leaching liquid is input into the acid leaching kettle 1, the activated carbon is input into the feeding bin 12, and then the rotating shaft 10 is started, so that the activated carbon is pressed into the acid leaching kettle 1 by the rotating outer threaded plate 21 and floats on the liquid surface, and the activated carbon floating on the liquid surface is continuously rotated by the outer threaded plate 21. The activated carbon on the surface is pressed into the acid leaching liquid. When pressed in, the activated carbon will float up due to the air inside and rub against each other, thereby separating the small particles on the activated carbon to accelerate the impregnation process. When the activated carbon absorbs the full acid leaching liquid, it will sink. At this time, the inner spiral plate 32 with the opposite spiral direction extends into the guide hemisphere 14 at the bottom of the acid leaching kettle 1. The guide hemisphere 14 is provided with guide plates 141 in a circular array. The sunken activated carbon will be located between the two guide plates 141, and then the rotation of the outer threaded plate 21 will drive the liquid to flow and flow along the two guide plates 141 to push the activated carbon to concentrate on the inner spiral plate 32. The inner spiral plate 32 will rotate with the rotating shaft 10 to transport the activated carbon that has been impregnated to the discharging frame 31 for discharging, so as to separate the small particles that have detached during the acid leaching process.

[0060] In the above technical scheme, the small particles attached to the unwashed activated carbon can be removed when it is wetted, and the activated carbon will sink after absorbing the acid leaching solution to separate the small particle impurities and the activated carbon, so as to complete the removal of the small particle impurities and the wettability of the activated carbon in the acid leaching kettle 1, thereby reducing the process time and shortening the process.

[0061] As an embodiment provided by the present invention, a limiting cover 13 is provided in the acid leaching kettle 1, and a filter ring 51 is provided in the liquid level tank opened on the limiting cover 13. After the acid leaching liquid is driven into the liquid level tank, bubbles are eliminated through the filter ring 51.

[0062] Specifically, a collecting tank 131 is provided in the liquid level tank, and small particles of debris are pushed into the collecting tank 131 for collection with the waves generated by the liquid level, a filter plate 512 is provided on the filter ring 51, and a liquid infusion pipe 52 is provided in the liquid level tank. The liquid infusion pipe 52 infuses liquid into the acid leaching kettle 1 to keep the liquid level in the middle of the filter ring 51. A heating roller 16 is provided on the rotating shaft 10, and the heating roller 16 is located between the outer threaded plate 21 and the guide hemisphere 14 to generate heat. The heated acid leaching liquid will float up to carry small particles of impurities generated when the activated carbons rub against each other. After floating, the heat flow will diffuse outward and surge due to the bubbles generated during heating to push the small particles and impurities into the liquid level tank. When the liquid level in the liquid level tank drops, the small particles of impurities will be retained in the liquid level tank to separate the small particles of impurities and the activated carbon, and the activated carbon can be continuously added to continuously feed and discharge, and the separation of small particles of impurities and the activated carbon can be achieved.

[0063] When in use, activated carbon is input into the feed bin 12, and the activated carbon floating on the liquid surface is pressed into the acid leaching liquid as the outer threaded plate 21 rotates continuously. When pressed in, they rub against each other, thereby separating the small particles on the activated carbon to accelerate the impregnation process. When the activated carbon absorbs the full acid leaching liquid, it will sink, and the inner spiral plate 32 will rotate with the rotating shaft 10 to transport the activated carbon that has been impregnated to the discharging frame 31 for discharging, so as to separate the small particles that have detached during the acid leaching. At the same time, the heating roller 16 will heat the acid leaching liquid to generate bubbles, and the bubbles and heat flow will entrain the small particles to float up, and because of the surge of bubbles on the liquid surface, they enter the liquid surface tank and are filtered and separated by the filter plate 512.

[0064] As an embodiment provided by the present invention, a partition cover 22 is arranged between the inner spiral plate 32 and the outer threaded plate 21, a retracting ring 33 is arranged on the inner spiral plate 32, and a flat water outlet 210 facing the liquid surface is opened on the outer threaded plate 21, and the flat water outlet 210 is fixedly connected to the first end of the retracting ring 33.

[0065] Specifically, a conical hole is provided on the closing ring 33 to increase the flow rate and water pressure. The flat water outlet 210 is fixedly connected to the first end of the closing ring 33 (the first end is the end with a reduced diameter), so that when the inner spiral plate 32 is rotated and lifted, the wetting liquid is sprayed along the flat water outlet 210 on the outer threaded plate 21. The water is sprayed while rotating, and the small particle impurities that float up with the assistance of the sprayed acid leaching liquid are pushed into the liquid surface tank. The liquid temperature at the bottom of the acid leaching kettle 1 is lower than the liquid surface. The acid leaching liquid with a temperature lower than the liquid surface is sprayed to eliminate the bubbles on the liquid surface to prevent the bubbles from accumulating due to retention. A plurality of inclined protrusions 511 are provided on the filter plate 512. The inclined protrusions 511 are inclined protrusions. When the small particles are pushed by the liquid surface, they are retained on the inclined protrusions 511.

[0066] During use, activated carbon is input into the feed bin 12, and the activated carbon floating on the liquid surface is pressed into the acid leaching liquid as the outer threaded plate 21 rotates continuously. When pressed in, they rub against each other, thereby separating the small particles on the activated carbon to accelerate the impregnation process. When the activated carbon absorbs the full acid leaching liquid, it will sink, and the inner spiral plate 32 will rotate with the rotating shaft 10 to transport the activated carbon that has been impregnated to the discharging frame 31 for discharging to separate the small particles that have been separated during the acid leaching. At the same time, the heating roller 16 will heat the acid leaching liquid to generate bubbles, and the bubbles and heat flow will carry the small particles to float up, and because of the surge of bubbles on the liquid surface, they enter the liquid surface tank and are filtered and separated by the filter plate 512. When the inner spiral plate 32 rotates and lifts, the impregnation liquid is sprayed along the flat water outlet 210 on the outer threaded plate 21 to assist in pushing the floating small particle impurities into the liquid surface tank.

[0067] As an embodiment provided by the present invention, a draining assembly 4 is provided at the first end of the pickling kettle 1, which includes a draining frame 41 rotatably connected to the discharge frame 31, and the draining frame 41 is driven to rotate to separate the pickling liquid, and the pickling liquid is dripped into the feed bin 12 along the draining holes 311 opened on the discharge frame 31;

[0068] The drain frame 41 is provided with separation grooves in a circumferential array, and the drain frame 41 rotates intermittently to drive the activated carbon to separate from the drain frame 41 along the separation grooves due to centrifugal force.

[0069] Specifically, the first end of the acid leaching kettle 1 (with Figure 2 For reference, the first section is the upper end) and is provided with a drain assembly 4, a drain frame 41 is rotatably connected to the discharge frame 31, and a separation groove is provided in a circular array on the drain frame 41, and the separation groove is used for the activated carbon to separate from the drain frame 41 when it rotates in the drain frame 41. When in use, the drain frame 41 will intermittently accelerate the rotation to remove excess acid leaching liquid on the activated carbon through centrifugal force and the restriction of the drain frame 41, and it will suddenly lose power after rotation, so as to use inertia to throw the activated carbon out of the drain frame 41 through the separation groove for subsequent discharging, and the drained acid leaching liquid will drip along the drain hole 311 to the feed bin 12 to pre-wet the activated carbon in the feed bin 12 to shorten the subsequent liquid absorption.

[0070] Furthermore, the drain frame 41 is provided with meshing teeth 411, the upper cover plate 11 is rotatably connected with a relay gear 43, the rotating shaft 10 is provided with a turntable 42, and the turntable 42 is provided with a semi-ring gear 421. When the rotating shaft 10 rotates, the relay gear 43 is coupled through the semi-ring gear 421, so that the relay gear 43 is coupled with the meshing teeth 411 to drive the drain frame 41 to rotate, and when the semi-ring gear 421 is disengaged, the drain frame 41 stops rotating to realize intermittent rotation of the drain frame 41.

[0071] When in use, activated carbon is input into the feed bin 12, and the activated carbon floating on the liquid surface is pressed into the acid leaching liquid as the outer threaded plate 21 rotates continuously. When pressed in, they rub against each other, thereby separating the small particles on the activated carbon to accelerate the impregnation process. When the activated carbon absorbs the full acid leaching liquid, it will sink. The inner spiral plate 32 will rotate with the rotating shaft 10 to transport the activated carbon that has been impregnated to the discharging frame 31 for discharging, so as to separate the small particles that have been separated during the acid leaching. At the same time, the heating roller 16 will heat the acid leaching liquid to generate bubbles. The heat flow will carry small particles to float up, and because of the surge of bubbles on the liquid surface, they enter the liquid level tank and are filtered and separated by the filter plate 512. When the inner spiral plate 32 rotates and lifts, the wetting liquid is sprayed along the flat water outlet 210 on the outer threaded plate 21 to help the floating small particles of impurities be pushed into the liquid level tank. After the activated carbon enters the discharge frame 31, it enters the drain frame 41. The drain frame 41 will intermittently accelerate the rotation to drain the activated carbon, and then use inertia to throw the activated carbon out of the drain frame 41 through the separation tank.

[0072] As an embodiment provided by the present invention, a plurality of open grooves 211 are formed on the outer threaded plate 21 along the spiral line, and through holes 212 are formed between the plurality of open grooves 211 .

[0073] Specifically, the multiple open grooves 211 can make the activated carbon float when it is not soaked in the acid leaching liquid, so as to cooperate with the outer threaded plate 21 that rotates downward to move back and forth in the acid leaching liquid, thereby retaining the unsoaked activated carbon in the middle layer of the liquid surface, and the small particles of impurities that appear when the activated carbons rub against each other can float up along the through holes 212, reducing the retention of small particles of impurities.

[0074] When in use, activated carbon is input into the feed bin 12, and the activated carbon floating on the liquid surface is pressed into the acid leaching liquid as the outer threaded plate 21 rotates continuously. When pressed in, they rub against each other, thereby separating the small particles on the activated carbon to accelerate the impregnation process. When rotating, the outer threaded plate 21 reciprocates up and down between the acid leaching liquids, and when the activated carbon absorbs the full acid leaching liquid, it will sink. The inner spiral plate 32 will rotate with the rotating shaft 10 to transport the activated carbon that has been impregnated to the discharging frame 31 for discharging, so as to separate the small particles that have been separated during the acid leaching process. At the same time, the heating roller 16 will heat The acid leaching liquid produces bubbles, and the bubbles and heat flow will carry small particles to float up. Due to the surge of bubbles on the liquid surface, the bubbles enter the liquid level tank and are filtered and separated by the filter plate 512. When the inner spiral plate 32 rotates and lifts, the impregnation liquid is sprayed along the flat water outlet 210 on the outer threaded plate 21 to help push the floating small particles of impurities into the liquid level tank. After the activated carbon enters the discharge frame 31, it enters the drain frame 41. The drain frame 41 will intermittently accelerate the rotation to drain the activated carbon, and then use inertia to throw the activated carbon out of the drain frame 41 through the separation tank.

[0075] As an embodiment provided by the present invention, inclined paddles 23 are arranged in a circumferential array on the outer threaded plate 21 , and the paddles 23 move liquid toward the conical surface 132 opened on the inner wall of the limiting cover 13 as the outer threaded plate 21 rotates.

[0076] Specifically, the inclined paddle 23 will cause the liquid to flow toward the conical surface 132 when the outer threaded plate 21 rotates. The thread line of the outer threaded plate 21 is conical and diffuse, and the conical angle of the thread line is the same as the conical surface 132, so that an interlayer is formed between the two. The fluctuating liquid will prevent the activated carbon from moving along the interlayer gap between the outer threaded plate 21 and the conical surface 132, so as to prevent the activated carbon from floating along the interlayer, thereby further increasing the retention effect on the floating activated carbon.

[0077] When in use, activated carbon is input into the feed bin 12, and the activated carbon floating on the liquid surface is pressed into the acid leaching liquid as the outer threaded plate 21 rotates continuously. When pressed, they rub against each other, thereby separating the small particles on the activated carbon to accelerate the infiltration process. When the outer threaded plate 21 rotates, the outer threaded plate 21 reciprocates up and down in the acid leaching liquid, and the paddle plate 23 will wave the liquid to move to the interlayer gap to intercept the activated carbon. When the activated carbon absorbs the full acid leaching liquid, it will sink. The inner spiral plate 32 will rotate with the rotating shaft 10 to transport the activated carbon that has been infiltrated to the discharging frame 31 for discharging, so as to separate the activated carbon that has been in the acid leaching process. The small particles will be separated from the acid leaching liquid, and the heating roller 16 will heat the acid leaching liquid to produce bubbles. The bubbles and heat flow will carry the small particles to float up, and because of the surge of bubbles on the liquid surface, they will enter the liquid level tank and be filtered and separated by the filter plate 512. When the inner spiral plate 32 rotates and lifts, the wetting liquid will be sprayed along the flat water outlet 210 on the outer threaded plate 21 to assist the floating small particles of impurities to be pushed into the liquid level tank. After the activated carbon enters the discharge frame 31, it enters the drain frame 41. The drain frame 41 will intermittently accelerate the rotation to drain the activated carbon, and then use inertia to throw the activated carbon out of the drain frame 41 through the separation tank.

[0078] As an embodiment provided by the present invention, the paddle plate 23 is rotatably connected to the outer threaded plate 21, and is assembled at the following two stations:

[0079] First station: the outer threaded plate 21 rotates forward to press down the activated carbon, and the paddle plate 23 turns over and transfers the liquid to the bottom of the acid leaching kettle 1;

[0080] Second station: the outer threaded plate 21 turns over to lift the activated carbon, and the paddle plate 23 turns over to restrict the activated carbon toward the top of the acid leaching kettle 1.

[0081] Specifically, the paddle plate 23 is rotatably connected to the outer threaded plate 21. Although the acid leaching liquid in the acid leaching kettle 1 is continuously added through the infusion tube 52, after a certain amount of activated carbon is acid-leached, all the acid leaching liquid needs to be replaced as a whole. During normal acid leaching, the rotating shaft 10 rotates forward. At this time, the paddle plate 23 is in the first position. The paddle plate 23 flips to the bottom of the acid leaching kettle 1 to transfer the liquid to intercept the activated carbon floating in the interlayer. When the acid leaching liquid is replaced, the rotating shaft 10 is reversed. At this time, the paddle plate 23 switches to the second position. The paddle plate 23 flips to the top of the acid leaching kettle 1, and the outer threaded plate 21 rotates to input the internal activated carbon into the feed bin 12 to facilitate the subsequent replacement of the acid leaching liquid. At this time, the paddle plate 23 flipped to the top plays a limiting role to prevent the activated carbon from falling.

[0082] When in use, activated carbon is input into the feed bin 12, and the activated carbon floating on the liquid surface is pressed into the acid leaching liquid as the outer threaded plate 21 rotates continuously. When pressed in, they rub against each other, thereby separating the small particles on the activated carbon to accelerate the infiltration process. When the outer threaded plate 21 rotates, the outer threaded plate 21 reciprocates up and down in the acid leaching liquid, and the paddle plate 23 will wave the liquid to move to the interlayer gap to intercept the activated carbon. When the activated carbon absorbs the full acid leaching liquid, it will sink. The inner spiral plate 32 will rotate with the rotating shaft 10 to transport the activated carbon that has been infiltrated to the discharging frame 31 for discharging, so as to separate the small particles that have detached during the acid leaching process. At the same time, the heating roller 16 will heat the acid leaching liquid to generate bubbles. Bubbles and heat flow will carry small particles to float up, and because of the surge of bubbles on the liquid surface, they enter the liquid level tank and are filtered and separated by the filter plate 512. When the inner spiral plate 32 rotates and lifts, the wetting liquid is sprayed along the flat water outlet 210 on the outer threaded plate 21 to help the floating small particles of impurities be pushed into the liquid level tank. After the activated carbon enters the discharge frame 31, it enters the drain frame 41. The drain frame 41 will intermittently accelerate the rotation to drain the activated carbon, and then use inertia to throw the activated carbon out of the drain frame 41 through the separation tank. When the acid leaching solution is replaced, the rotating shaft 10 is reversed, and the paddle plate 23 is switched to the second station. The paddle plate 23 flips toward the top of the acid leaching kettle 1 to restrict the activated carbon.

[0083] As the best embodiment provided by the present invention, a spiral driving plate 232 is provided at the first end of the paddle board 23, and limit strips 231 are symmetrically provided on the paddle board 23. The spiral driving plate 232 drives the paddle board 23 to flip over as the water flow impacts.

[0084] Specifically, the first end of the paddle board 23 (with Figure 8 For reference, the first end is the upper end) and is provided with a spiral drive plate 232, which is rotatably connected to a swivel 233 provided on the outer threaded plate 21. When the rotating shaft 10 rotates forward or flips, the liquid will flow from one end of the spiral drive plate 232 to the other end or vice versa, to drive the paddle plate 23 to flip upward or downward. At this time, the limit strip 231 will fit the outer threaded plate 21 to limit the paddle plate 23, so as to keep the paddle plate 23 in the first position or the second position.

[0085] When in use, activated carbon is input into the feed bin 12, and the activated carbon floating on the liquid surface is pressed into the acid leaching liquid as the outer threaded plate 21 rotates continuously. When pressed in, they rub against each other, thereby separating the small particles on the activated carbon to accelerate the infiltration process. When the outer threaded plate 21 rotates, the outer threaded plate 21 reciprocates up and down in the acid leaching liquid, and the paddle plate 23 rotates with the spiral drive plate 232 and switches to the first station to be fixed, so that the liquid moves to the interlayer gap with the rotation fluctuation to intercept the activated carbon, and when the activated carbon absorbs the full acid leaching liquid, it will sink. The inner spiral plate 32 will rotate with the rotating shaft 10 to transport the activated carbon that has been infiltrated to the discharging frame 31 for discharging, so as to separate the small particles that have detached during the acid leaching process. At the same time, the heating roller 16 will heat the acid leaching liquid. The liquid generates bubbles, and the bubbles and heat flow will carry small particles to float up. Because of the surge of bubbles on the liquid surface, they enter the liquid level tank and are filtered and separated by the filter plate 512. When the inner spiral plate 32 rotates and lifts, the wetting liquid is sprayed along the flat water outlet 210 on the outer threaded plate 21 to assist the floating small particles of impurities to be pushed into the liquid level tank. After the activated carbon enters the discharge frame 31, it enters the drain frame 41. The drain frame 41 will intermittently accelerate the rotation to drain the activated carbon, and then use inertia to throw the activated carbon out of the drain frame 41 through the separation tank. When the acid leaching liquid is replaced, the rotating shaft 10 is reversed, and the paddle plate 23 rotates with the spiral drive plate 232 to switch to the second station. The paddle plate 23 flips toward the top of the acid leaching kettle 1 to restrict the activated carbon.

[0086] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for preparing supported activated carbon, characterized in that: include: An acid leaching kettle (1) having a rotating shaft (10) disposed thereon; A discharge mechanism (3), comprising an inner spiral plate (32) and a discharge frame (31) arranged on the rotating shaft (10), wherein the discharge frame (31) is provided with a conical ring plate (15); A feeding mechanism (2), comprising a feeding bin (12) and an outer threaded plate (21) disposed on the inner spiral plate (32), the spiral rotation directions of the two being opposite; The rotating shaft (10) is driven to rotate, so as to drive the inner spiral plate (32) to lift the activated carbon as it rotates, and to drive the outer spiral plate (21) to press down the activated carbon as it rotates; The acid leaching kettle (1) is provided with a limiting cover (13), and a filter ring (51) is provided in a liquid level tank opened on the limiting cover (13); after the acid leaching liquid is driven into the liquid level tank, it passes through the filter ring (51) to eliminate bubbles; A collecting tank (131) is provided in the liquid level tank, a filter plate (512) is provided on the filter ring (51), a liquid infusion tube (52) is provided in the liquid level tank, and a heating roller (16) is provided on the rotating shaft (10).

2. The device for preparing supported activated carbon according to claim 1, characterized in that: A partition cover (22) is provided between the inner spiral plate (32) and the outer threaded plate (21); a retracting ring (33) is provided on the inner spiral plate (32); a flat water outlet (210) facing the liquid surface is provided on the outer threaded plate (21); the flat water outlet (210) is fixedly connected to the first end of the retracting ring (33).

3. The device for preparing supported activated carbon according to claim 1, characterized in that: The first end of the acid leaching kettle (1) is provided with a draining assembly (4), which comprises a draining frame (41) rotatably connected to the discharge frame (31), the draining frame (41) being driven to rotate to separate the acid leaching liquid and causing the acid leaching liquid to drip toward the feed bin (12) along the draining holes (311) provided on the discharge frame (31).

4. The device for preparing supported activated carbon according to claim 3, characterized in that: The drain frame (41) is provided with separation grooves in a circumferential array, and the drain frame (41) rotates intermittently to drive the activated carbon to separate from the drain frame (41) along the separation grooves due to centrifugal force.

5. The device for preparing supported activated carbon according to claim 1, characterized in that: A plurality of open grooves (211) are provided on the outer threaded plate (21) along the spiral line, and through holes (212) are provided between the plurality of open grooves (211).

6. The device for preparing supported activated carbon according to claim 1, characterized in that: Inclined paddle plates (23) are arranged in a circular array on the outer threaded plate (21), and the paddle plates (23) rotate with the outer threaded plate (21) to push liquid toward the conical surface (132) formed on the inner wall of the limiting cover (13).

7. The device for preparing supported activated carbon according to claim 6, characterized in that: The paddle plate (23) is rotatably connected to the outer threaded plate (21) and is assembled at the following two stations: First workstation: the outer threaded plate (21) rotates forward to press down the activated carbon, and the paddle plate (23) turns over to transfer liquid to the bottom of the acid leaching kettle (1); Second workstation: the outer threaded plate (21) turns over to lift up the activated carbon, and the paddle plate (23) turns over to restrict the activated carbon toward the top of the acid leaching kettle (1).

8. The device for preparing supported activated carbon according to claim 7, characterized in that: A spiral drive plate (232) is provided at the first end of the paddle board (23), and limit strips (231) are symmetrically provided on the paddle board (23), and the spiral drive plate (232) drives the paddle board (23) to flip over as the water flow impacts.

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