CN210214817U - Activated carbon activation regeneration device - Google Patents

Abstract

The utility model discloses an activated carbon activation and regeneration device, which adopts an inner material pipe and an outer material pipe which are arranged in a double-layer way, wherein the inner material pipe is arranged in the outer material pipe, and the inner material pipe and the outer material pipe are fixed together; first shoveling plates are uniformly distributed on the inner wall of the outer feeding pipe, are bent, and have the same bending direction as the rotating direction of the feeding pipe; and second shoveling plates distributed in a dispersed manner are arranged on the outer wall of the inner material pipe and are bent in the opposite direction of the rotation of the material pipe. The steam device is connected towards one end of the discharge hole of the inner material pipe, and a steam channel is arranged inside the inner material pipe. The utility model can be used for regenerating waste active carbon and can also be used as an active carbon activation furnace to produce new active carbon; the shoveling plates on the inner and outer material pipes enable the materials to be thrown for multiple times in the advancing process, powder contained in the materials can be diffused in the furnace chamber and fully combusted, and the dust discharged into discharged materials and tail gas is reduced while heat is provided for the furnace.

Description

Activated carbon activation regeneration device

Technical Field

The utility model relates to an active carbon regeneration and activation field, in particular to active carbon activation regenerating unit.

Background

The waste activated carbon used in the water treatment industry is regenerated, and a heating regeneration mode is generally adopted at present. The waste activated carbon contains adsorbed organic matters, water (the water content is about 40%) is contained in pores, the organic matters are decomposed to generate combustible gas in the heating and regenerating process, the combustible gas is subjected to combustion reaction with trace oxygen entering a furnace, the combustible gas is decomposed into carbon dioxide and water in the regenerating process while providing heat, the water and the water in the pores are heated to form water vapor, the water vapor is subjected to activation reaction with activated carbon with the temperature of more than 750 ℃, the quality of the regenerated activated carbon can be directly improved, and the sufficient contact of the water vapor and the high-temperature activated carbon is a necessary condition for fully utilizing the water vapor. And finally, discharging residual gas, water vapor and dust in the furnace to the outside of the furnace through a draught fan.

Currently, an external heating type rotary furnace is generally used for activated carbon regeneration, the internal structure of a material pipe is shown in figure 1, materials 80 are overturned along the material pipe 81, so that only the surface layer part is contacted with water vapor, the materials are concentrated at the lower part of the material pipe side, most space of the material pipe is empty, most of the water vapor and combustible gas are discharged by a draught fan, and only a small part of the water vapor and the combustible gas reacts with high-temperature activated carbon; meanwhile, fine powder generated in the regeneration process is mixed with granular active carbon, and the fine powder is sieved and removed after discharging.

The production of the activated carbon is that the granular carbonized material (wood or coal) is heated to over 750 ℃, and then reacts with the high-temperature carbonized material by taking water vapor as an activating agent, so that a porous channel structure is formed in the carbonized material, namely the activated carbon is formed. Different from the regeneration that water in the pore channels of the waste activated carbon is heated to generate steam, the carbonized material has no pore channels, namely enough water is difficult to be preserved after long-time soaking; therefore, when the activated carbon is used as an activation furnace for activated carbon production, external steam supply is required.

Currently, an internal heating type activation furnace is mostly used for producing activated carbon, and the structure of the internal heating type activation furnace is shown in fig. 2, heat preservation cotton 93 is arranged between the inner wall 91 of the furnace and the outer wall 92 of the furnace, a circle of steam main pipe 94 is arranged outside the furnace, a plurality of steam branch pipes 95 are divided from the steam main pipe and extend into the furnace, and steam control valves 96 are arranged on the steam branch pipes. The internal heating type activated carbon activation furnace is used for burning the carbonized material to heat a hearth, namely the carbonized material used for producing the activated carbon is used as fuel at the same time, so that the product yield of the activated carbon is lower, and generally 1 ton of activated carbon finished product can be produced by 2-3 tons of the carbonized material. And the residual substances after the carbonization material is burnt are a large amount of ash, the ash can enter flue gas and finished products, and the separation is difficult when the ash content in the flue gas is higher. The temperature in the internal heating type activation furnace is controlled by the amount of air fed into the furnace, but the combustion amount cannot be directly controlled to control the temperature, and the temperature adjustment reaction is slow. Since cold air is generally introduced, more carbonized material is consumed in production in cold seasons, i.e., the product yield is lower. Meanwhile, the materials are concentrated at the lower part of the material pipe side, the material layer is thick, the high-temperature carbonized materials are not uniformly contacted with water vapor, fine powder generated in the production process is mixed with granular activated carbon, and the fine powder is removed by screening after being discharged. Steam enters the hearth by adopting a plurality of steam branch pipes, and can be opened to lead steam only at the bottom, so that the structure is complex, and the failure rate of the steam pipes is high. The steam temperature entering the high temperature section is low (about 150 ℃), and the reaction temperature needs to be over 750 ℃, so that the steam quantity needs to be strictly controlled, otherwise, the temperature of the high temperature section is continuously reduced.

Disclosure of Invention

The utility model aims at providing an active carbon activation regenerating unit which can be used for regenerating waste active carbon and producing new active carbon as an active carbon activation furnace.

Therefore, the technical scheme of the utility model is that: an activated carbon activation regeneration device comprises a material pipe and a driving assembly for driving the material pipe to rotate, wherein two ends of the material pipe are respectively connected with a feed hopper and a discharge port, and a heating device is arranged outside the material pipe; the method is characterized in that: the material pipe is divided into an inner material pipe and an outer material pipe which are coaxially arranged, the inner material pipe is arranged in the outer material pipe, and the inner material pipe and the outer material pipe are fixed; first shoveling plates are uniformly distributed on the inner wall of the outer feeding pipe, are bent, and have the same bending direction as the rotating direction of the feeding pipe; and second shoveling plates distributed in a dispersed manner are arranged on the outer wall of the inner material pipe and are bent in the opposite direction of the rotation of the material pipe.

Preferably, one end of the inner material pipe, which faces the discharge port, is connected with a steam device, the steam device is communicated with the inside of the inner material pipe through a steam pipe, and the steam pipe is provided with a steam valve, namely, the inside of the inner material pipe is a steam channel.

Preferably, the outer walls of the two ends of the inner material pipe are fixed with pushing spiral sheets, the outer edges of the pushing spiral sheets are fixed on the inner wall of the outer material pipe, namely the pushing spiral sheets at the two ends fix the inner material pipe and the outer material pipe into a whole, and a material channel is arranged between the inner material pipe and the outer material pipe.

Preferably, the device also comprises a base, wherein a plurality of groups of material pipes are arranged on the base, the outer side of each material pipe is wrapped with an insulating layer, and the heating device is positioned in the insulating layer; two ends of each outer material pipe are sleeved with rolling rings, and the rolling rings are in running fit with riding wheels on the base; the driving assembly comprises a driving motor, a driving chain wheel, a plurality of driven chain wheels and a chain, the driving motor is installed on the base, the driving chain wheel is fixed on the motor shaft, the driven chain wheels are respectively sleeved on the outer material pipe, and the driving chain wheels are connected with the driven chain wheels through the chain.

Preferably, be equipped with feeding switching cover and feeding flight between feeder hopper and the material pipe, feeding switching cover connects feeder hopper and material pipe, and feeding flight is by feeding motor drive, and in feeding switching cover was arranged in to one end, the other end was arranged in the material pipe.

Preferably, the material pipe is connected with the discharge hole through a discharge adapter sleeve, and the discharge adapter sleeve is further provided with an exhaust port.

The device of the utility model can be used as a regeneration furnace, the waste activated carbon enters between the inner and the outer material pipes from the feed hopper, and the inner and the outer material pipes are driven by the driving component to synchronously rotate; when the material regeneration device rotates, the first shoveling plates on the inner wall of the outer material pipe lift materials upwards, the materials are thrown off along with rotation, the thrown materials are caught by the second shoveling plates on the inner material pipe, the materials are thrown off along with rotation again, the materials are thrown off for multiple times in the advancing process, combustible substances contained in the materials are fully contacted with oxygen and then are combusted, water generated after combustion and moisture in pores of waste activated carbon are heated to form water vapor, and the water vapor and the activated carbon with the temperature of more than 750 ℃ are subjected to activation reaction, so that the activated carbon regeneration process is completed.

The device of the utility model can also be used as an activation furnace, carbonized materials enter between the inner material pipe and the outer material pipe from the feed hopper, are continuously thrown by the first shoveling plate and the second shoveling plate on the inner material pipe and the outer material pipe, and are heated by the heating device outside the material pipe; meanwhile, the steam device and the steam valve are opened, steam enters the inner material pipe through the steam pipe and penetrates through the whole inner material pipe to enter the space between the inner material pipe and the outer material pipe from the feeding end, the steam is continuously heated in the advancing process, and the activation reaction is directly carried out when the steam is contacted with a high-temperature carbonized material, so that the activated carbon is finally obtained.

The utility model discloses a core material pipe adopts inside and outside bilayer structure, forms annular material passageway of marcing for the material distribution area is bigger on material cross-section, and high temperature active carbon and vapor contact's is more abundant promptly. The annular material channel between two layers of material pipes is small in size, namely, the channel for gas and water vapor to pass through is smaller, and the water vapor is not easy to discharge and is easier to contact with high-temperature activated carbon.

The utility model discloses an all have the shovelling plate of bending according to certain angle on the interior material pipe, when rotatory, the shovelling plate of the shape of bending on the outer material pipe can promote the higher position with the material and shed again, and the material that sheds off is mostly caught by the shovelling plate on the interior material pipe, and is shed downwards once more. The materials are thrown for many times in the advancing process, the powder contained in the materials can be spread in the furnace chamber and can be mostly combusted after being contacted with oxygen, and the dust discharged into the discharged materials and tail gas is reduced while heat is provided for the furnace.

The utility model can be used for regenerating waste activated carbon and can also be used as an activated carbon activation furnace to produce new activated carbon. When the activated carbon activation furnace is used as an activated carbon activation furnace, the inner material pipe is also used as a water vapor conveying pipeline, and no steam pipeline is arranged outside the material pipe, so that the whole structure is simpler, the activated carbon activation furnace can be used by a single material pipe, and a plurality of material pipes can also be combined for use. The utility model adopts an external heating mode, and the heating can use electric energy or natural gas; the temperature can be controlled by changing the heating power, the control is sensitive and reliable, and the whole activated carbon activation or regeneration process is stably finished.

Drawings

The following detailed description is made with reference to the accompanying drawings and embodiments of the present invention

Fig. 1 is a schematic structural diagram of a material pipe in the prior art;

FIG. 2 is a schematic structural diagram of an internal heating type activation furnace in the prior art;

FIG. 3 is a schematic structural view of the present invention;

fig. 4 is a schematic view of the internal structure of the present invention;

FIG. 5 is a cross-sectional view A-A of FIG. 4;

FIG. 6 is a cross-sectional view B-B of FIG. 4;

FIG. 7 is a cross-sectional view C-C of FIG. 4;

FIG. 8 is a cross-sectional view taken along line D-D of FIG. 4;

FIG. 9 is a cross-sectional view E-E of FIG. 4;

FIG. 10 is a schematic view of the flow of water vapor in accordance with the present invention;

fig. 11 is a structural sectional view of the material pipe of the present invention;

fig. 12 is an exploded view of the material tube of the present invention.

Labeled as: the device comprises a feeding motor 1, a hopper discharging pipe 2, a feeding hopper 3, a feeding adapter sleeve 4, a feeding spiral plate 5, a driven sprocket 6, a front rolling ring 7, an upper electric heating wire 8, a heat insulation layer 9, an outer feeding pipe 10, an inner feeding pipe 11, a rear rolling ring 12, an exhaust port 13, a discharging adapter sleeve 14, a base 15, a front riding wheel 16, a driving motor 17, a lower electric heating wire 18, a rear riding wheel 19, a discharging port 20, a rotary joint 21, a steam valve 22, a front end sealing device 23, a side cover plate 24, a rear end sealing device 25, a driving sprocket 26, a chain 27, a propelling spiral plate 28, a first lifting plate 29, a second lifting plate 30, a steam pipe 31, a reinforcing ring 32 and a reinforcing plate 33.

The prior art is as follows: the device comprises materials 80, a material pipe 81, a furnace inner wall 91, a furnace outer wall 92, heat insulation cotton 93, a steam main pipe 94, steam branch pipes 95 and a control valve 96.

Detailed Description

See the drawings. The whole device comprises a base 15, wherein four groups of material pipes are arranged on the base, and are arranged side by side in pairs and are shaped like a Chinese character tian; each group of material pipes comprises an inner material pipe 11 and an outer material pipe 10 which are coaxially arranged, a front rolling ring 7 and a rear rolling ring 12 are sleeved at two ends of each outer material pipe, and the front rolling ring and the rear rolling ring are in running fit with a front riding wheel 16 and a rear riding wheel 19 on a base; the driving assembly comprises a driving motor 17, a driving chain wheel 26, four driven chain wheels 6 and a chain 27, the driving motor is installed on the base, the driving chain wheel is fixed on a motor shaft, the four driven chain wheels are respectively sleeved on four outer material pipes, the driving chain wheel 26 is connected with the four driven chain wheels 6 through the chain 27, and a tensioning wheel can be arranged between the driven chain wheels to increase the tensioning force of the chain. The material pipe is arranged in a square heat-insulating layer 9, and an upper electric heating wire 8 and a lower electric heating wire 18 are respectively arranged on the upper side and the lower side of the material pipe and are positioned in the heat-insulating layer; the two ends of the material pipe extend out of the heat preservation layer, a front end sealing device 23 and a rear end sealing device 25 are arranged at the junction of the two ends of the material pipe and the heat preservation layer to seal the whole heat preservation layer, and a side cover plate 24 is arranged on the outer side of the heat preservation layer.

The material pipe is divided into an inner material pipe 11 and an outer material pipe 10 which are coaxially arranged, the inner material pipe is arranged in the outer material pipe, and the outer side of the outer material pipe is provided with a reinforcing ring 32 and a reinforcing plate 33; the outer walls of the two ends of the inner material pipe 11 are fixed with pushing spiral sheets 28, the outer edges of the pushing spiral sheets are fixed on the inner wall of the outer material pipe, namely the pushing spiral sheets at the two ends fix the inner material pipe and the outer material pipe into a whole, and a material channel is arranged between the inner material pipe and the outer material pipe. The inner wall of the outer material pipe 10 is provided with first shoveling plates 29 which are uniformly distributed, the first shoveling plates are distributed on the circumference of the inner wall of the outer material pipe along a central axis, the first shoveling plates are bent, the bending angle is an obtuse angle when viewed from the radial section, and the bending direction is consistent with the rotating direction of the material pipe, so that when the material pipe rotates, the first shoveling plates can scoop up materials like a spoon and bring the materials to the upper side along with the rotation and then throw the materials; the outer wall of the inner material pipe 11 is provided with second shoveling plates 30 distributed in a dispersed mode, one end of each second shoveling plate is fixed to the outer wall of the inner material pipe, the other end of each second shoveling plate is bent in the opposite direction of the rotation of the material pipe, the bending directions of the shoveling plates on the inner material pipe and the outer material pipe are opposite, when the outer material pipe is used for throwing high-level materials, most of the materials can fall into a gap formed by the adjacent second shoveling plates on the inner material pipe, and finally the materials fall off from the second shoveling plates of the inner material pipe along with the rotation of the material pipe.

Feed hopper 3 and discharge gate 20 are connected respectively to material pipe both ends, and four group's material pipes can share a feed hopper, and 4 group's material pipes are connected respectively through four hopper unloading pipe 2 to the feed hopper, are equipped with feeding switching cover 4 and feeding flight 5 between hopper unloading pipe and the material pipe, and feeding switching cover connects feed hopper and material pipe, and feeding flight is driven by feeding motor 1, and in feeding switching cover was arranged in to one end, the other end was arranged in the material pipe. The ejection of compact one end of material pipe is connected ejection of compact adapter sleeve 14, and ejection of compact adapter sleeve below sets up the discharge gate, and the top still is equipped with gas vent 13.

When this device uses as the regenerator, useless active carbon gets into from 3 departments of feeder hopper, and feeding motor 1 drive feeding flight 5, pivoted feeding flight will follow the useless active carbon propelling movement that the feeder hopper came in to the feed pipe in, again via the propulsion flight 28 between the inside and outside feed pipe, send useless active carbon to between the inside and outside feed pipe. At the moment, the baffle plate can be arranged at one end, facing the feeding end, of the inner material pipe, so that the materials are prevented from entering the inner material pipe. The waste activated carbon enters between the inner material pipe and the outer material pipe, and the inner material pipe and the outer material pipe are driven by the driving assembly to synchronously rotate; when the material throwing device rotates, the first shoveling plates 29 on the inner wall of the outer material pipe lift the materials upwards, the materials are thrown off along with the rotation, most of the thrown materials are received by the second shoveling plates 30 on the inner material pipe, the materials are thrown downwards again along with the rotation, and the materials are thrown for multiple times in the advancing process; the method comprises the steps of fully decomposing adsorbed organic matters in the waste activated carbon to generate combustible gas, enabling the combustible gas to perform combustion reaction with trace oxygen entering a furnace, providing heat, simultaneously decomposing the combustible gas into carbon dioxide and water, enabling the waste activated carbon to contain water (the water content is about 40%) in pores, enabling the water decomposed from the combustible gas to be heated together with the water in the pores to become water vapor, enabling the water vapor to perform activation reaction with activated carbon with the temperature of more than 750 ℃, completing an activated carbon regeneration process, and finally discharging residual gas, water vapor and dust in the furnace to the outside of the furnace through a draught fan.

When this device used as activation furnace, interior charge pipe was connected steam device towards discharge gate one end, and steam device is linked together through steam pipe 31, rotary joint 21 and interior charge pipe inside, is equipped with steam valve 22 on the steam pipe, and the inside of interior charge pipe is the steam passageway promptly, and interior charge pipe need not to set up the baffle towards feeding one end this moment, and the velocity of flow of steam is too fast, can prevent effectively that the material from getting into interior charge pipe inside. When in use, the carbonized material enters between the inner material pipe and the outer material pipe from the feed hopper, is continuously thrown by the first shoveling plates 29 and the second shoveling plates 30 on the inner material pipe and the outer material pipe, and is heated by the heating device outside the material pipe; meanwhile, the steam device and the steam valve are opened, the inner material pipe is also used as a steam conveying pipeline, and steam enters from the tail end of the inner material pipe, passes through the whole inner material pipe, enters a channel between the inner material pipe and the outer material pipe from the front end, passes through the whole hearth again and is fully contacted with the carbonized material; the water vapor is continuously heated in the advancing process, and when the water vapor is contacted with the high-temperature carbonization material, the water vapor is close to the temperature of the carbonization material, and can directly react to obtain the activated carbon, so that the activation efficiency and the quality are improved.

Claims (6)

1. An activated carbon activation regeneration device comprises a material pipe and a driving assembly for driving the material pipe to rotate, wherein two ends of the material pipe are respectively connected with a feed hopper and a discharge port, and a heating device is arranged outside the material pipe; the method is characterized in that: the material pipe is divided into an inner material pipe and an outer material pipe which are coaxially arranged, the inner material pipe is arranged in the outer material pipe, and the inner material pipe and the outer material pipe are fixed; first shoveling plates are uniformly distributed on the inner wall of the outer feeding pipe, are bent, and have the same bending direction as the rotating direction of the feeding pipe; and second shoveling plates distributed in a dispersed manner are arranged on the outer wall of the inner material pipe and are bent in the opposite direction of the rotation of the material pipe.

2. The activated carbon regeneration apparatus as claimed in claim 1, wherein: the steam device is connected to one end, facing the discharge port, of the inner material pipe, the steam device is communicated with the inner material pipe through a steam pipe, a steam valve is arranged on the steam pipe, and namely a steam channel is arranged inside the inner material pipe.

3. An activated carbon activation regeneration apparatus as claimed in claim 1 or 2, wherein: the outer walls of the two ends of the inner material pipe are fixed with pushing spiral sheets, the outer edges of the pushing spiral sheets are fixed on the inner wall of the outer material pipe, namely the pushing spiral sheets at the two ends fix the inner material pipe and the outer material pipe into a whole, and a material channel is arranged between the inner material pipe and the outer material pipe.

4. An activated carbon activation regeneration apparatus as claimed in claim 1 or 2, wherein: the heating device is characterized by also comprising a base, wherein a plurality of groups of material pipes are arranged on the base, the outer side of each material pipe is wrapped with a heat-insulating layer, and the heating device is positioned in the heat-insulating layer; two ends of each outer material pipe are sleeved with rolling rings, and the rolling rings are in running fit with riding wheels on the base; the driving assembly comprises a driving motor, a driving chain wheel, a plurality of driven chain wheels and a chain, the driving motor is installed on the base, the driving chain wheel is fixed on the motor shaft, the driven chain wheels are respectively sleeved on the outer material pipe, and the driving chain wheels are connected with the driven chain wheels through the chain.

5. An activated carbon activation regeneration apparatus as claimed in claim 1 or 2, wherein: the feeding device is characterized in that a feeding transfer sleeve and a feeding spiral sheet are arranged between the feeding hopper and the feeding pipe, the feeding transfer sleeve is connected with the feeding hopper and the feeding pipe, the feeding spiral sheet is driven by a feeding motor, one end of the feeding spiral sheet is arranged in the feeding transfer sleeve, and the other end of the feeding spiral sheet is arranged in the feeding pipe.

6. An activated carbon activation regeneration apparatus as claimed in claim 1 or 2, wherein: the material pipe is connected with the discharge port through a discharge adapter sleeve, and an exhaust port is further formed in the discharge adapter sleeve.

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