Regenerated activated carbon cooling device

Abstract

The utility model belongs to the technical field of activated carbon regeneration, and discloses a regenerated activated carbon cooling device, a spray cooling module comprises a spray water supply main pipe and a plurality of spray water supply branch pipes, and the spray water supply main pipe is arranged at the top of a water-cooling screw conveyor and is arranged along the axial direction of the water-cooling screw conveyor; one end of the spraying water supply main pipe is connected with a water inlet pipe opening of the water cooling jacket; the plurality of spraying water supply branch pipes are axially distributed along the spraying water supply main pipe, one end of each spraying water supply branch pipe is connected with the spraying water supply main pipe, and the other end of each spraying water supply branch pipe penetrates through the water cooling jacket, extends to the inner side of an inner shell of the water cooling screw conveyor and is provided with a spraying nozzle; the hole diameter of the spraying holes of the spraying nozzles close to the feeding pipe opening of the water-cooling screw conveyor is larger than the hole diameter of the spraying holes close to the discharging pipe opening of the water-cooling screw conveyor. The problems that an existing water-cooling spiral conveying device is low in heat exchange efficiency, and a high-temperature regenerated activated carbon material cannot be efficiently and fully cooled are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of activated carbon regeneration, and in particular relates to a regenerated activated carbon cooling device. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] The water-cooled screw conveyor is a type of transmission machinery. It is a device that uses spiral blades to squeeze out the high-temperature material of regenerated activated carbon. The transmission part is usually composed of a variable frequency motor, a reducer and a tail plate bearing. During the material output process, the transmission shaft drives the spiral blades to push the material at the lower end of the shell from the inlet end to the outlet end.

[0004] Regenerated activated carbon at high temperature (400-600°C) needs to be cooled quickly before collection, because the ignition point of activated carbon is 344.31°C. When the regenerated activated carbon that has not been fully cooled comes into contact with oxygen, there is a risk of high-temperature oxidation and combustion.

[0005] The traditional material cooling method is to cool the material through a water-cooled screw conveyor. The usual method is to pass circulating cooling water into the cylinder jacket to exchange heat with the inner cylinder wall in contact with the material. This method has low heat exchange efficiency and the degree of cooling is not obvious. Secondly, in order to have a more ideal cooling effect, the cylinder wall is often required to have a larger heat exchange area, which will cause the water-cooled screw conveyor to be too large, which undoubtedly increases the production cost. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a regenerated activated carbon cooling device, which solves the problem that the existing water-cooled screw conveyor device has low heat exchange efficiency and cannot effectively and fully cool the high-temperature regenerated activated carbon material.

[0007] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0008] A regenerated activated carbon cooling device comprises a water-cooled screw conveyor, a water storage tank and a spray cooling module, wherein the outer wall of the water-cooled screw conveyor is provided with a water-cooled jacket and a conveying auger is provided inside;

[0009] The water storage tank is connected to the water inlet of the water cooling jacket through a pipeline and a water pump, and the water discharge outlet of the water cooling jacket is connected to the water storage tank;

[0010] The spray cooling module includes a spray water supply main pipe and a plurality of spray water supply branches. The spray water supply main pipe is at the top of the water-cooled screw conveyor and is arranged along the axial direction of the water-cooled screw conveyor. One end of the spray water supply main pipe is connected to the water inlet of the water cooling jacket.

[0011] A plurality of spray water supply branch pipes are distributed axially along the spray water supply main pipe, one end of each spray water supply branch pipe is connected to the spray water supply main pipe, and the other end passes through the water cooling jacket and extends to the inner side of the inner shell of the water cooling screw conveyor, and a spray nozzle is arranged at the end;

[0012] The diameter of the spray hole of the spray nozzle close to the feed pipe opening of the water-cooling screw conveyor is larger than the diameter of the spray hole close to the discharge pipe opening.

[0013] In some embodiments, the density of the spray nozzles near the feed nozzle of the water-cooled screw conveyor is greater than that of the spray nozzles near the discharge nozzle, so that the amount of water sprayed near the feed nozzle is larger to ensure good cooling efficiency. At the same time, the temperature of the regenerated activated carbon at this position is higher, and the evaporation rate of water is faster, avoiding excessive water residue.

[0014] In some embodiments, a seal is provided between the spray water supply branch pipe and the shell of the water cooling jacket. The water cooling jacket can provide good support for the spray water supply branch pipe, and the seal can prevent the cooling water in the water cooling jacket from flowing out, thus avoiding waste.

[0015] Preferably, a flow regulating valve is provided at one end of the spray water supply main pipe connected to the water inlet of the water cooling jacket. The flow regulating valve can adjust the flow of the spray water according to the flow and temperature of the regenerated activated carbon in the water-cooling screw conveyor to ensure a good cooling effect while avoiding excessive water spraying.

[0016] In some embodiments, a water supply filter is provided on the pipe between the water storage tank and the water inlet of the water cooling jacket. Since the water in the water cooling jacket circulates between the water cooling jacket and the water storage tank, solid particles are inevitably present, and the solid particles are easy to clog the spray nozzle, so a water supply filter is provided to filter the circulating water to avoid clogging of the spray nozzle.

[0017] In some embodiments, a temperature sensor is provided on the discharge pipe of the water-cooled screw conveyor. The temperature sensor is used to detect the temperature of the discharged regenerated activated carbon so as to timely adjust the circulating water flow rate and the spray water flow rate in the water-cooled jacket.

[0018] In some embodiments, the exhaust pipe outlet of the water-cooled screw conveyor is connected to the bag dust collector box through a pipeline.

[0019] Preferably, the exhaust pipe opening of the water-cooled screw conveyor is arranged at the top.

[0020] Preferably, the bag dust removal box is connected to a dust removal fan. The dust removal fan provides power to transport the gas-solid mixture in the water-cooled screw conveyor to the bag dust removal box for separation.

[0021] Further preferably, the air outlet of the dust removal fan is connected to the chimney, and a water retaining cap is provided on the top of the chimney.

[0022] The beneficial effects achieved by one or more embodiments of the utility model described above are as follows:

[0023] In the regenerated activated carbon cooling device, the water in the water tank is transported to the water inlet through a water pump, and the water inlet is split. A branch of cooling water flows into the water-cooling jacket cavity of the water-cooling screw conveyor. The heat of the high-temperature material is transferred to the cooling water with a lower temperature by using the laws of thermodynamics, thereby reducing the surface temperature of the material.

[0024] Another branch of cooling water is passed through the spray nozzle to turn water into water mist in the form of high-pressure jet to cool the regenerated activated carbon. The high-temperature material is continuously transported to the discharge pipe under the stirring of the spiral blades, which can effectively prevent the regenerated activated carbon from sticking to water. At the same time, after the water mist sprayed from the spray nozzle contacts the high-temperature material, it absorbs the heat in the regenerated activated carbon and turns into water vapor, which cools the regenerated activated carbon. The water vapor can be discharged externally. This method can effectively improve the heat conduction efficiency, that is, improve the cooling efficiency of the regenerated activated carbon, effectively reduce the volume of the water-cooled screw conveyor, and is conducive to lightweighting the water-cooled screw conveyor and reducing costs.

[0025] In addition, since the temperature of the regenerated activated carbon near the discharge nozzle is much lower than that of the regenerated activated carbon near the feed nozzle, if more water mist is sprayed near the discharge nozzle, it is easy to cause the water mist to evaporate untimely, which in turn leads to a higher moisture content in the regenerated activated carbon, affecting the recycling and reuse of the regenerated activated carbon, and in severe cases, causing the regenerated activated carbon to stick together. Therefore, the spray hole diameter of the spray nozzle near the feed nozzle of the water-cooled screw conveyor is set to be larger than the spray hole diameter near the discharge nozzle, so that the water mist particles sprayed near the feed nozzle are larger and the water volume is larger, so as to improve the cooling efficiency of the regenerated activated carbon; at the same time, the water mist particles sprayed near the discharge nozzle are finer and the water volume is less, so as to increase the contact area with the activated carbon, ensure the effective cooling of the regenerated activated carbon, and make the water mist evaporate in time to prevent sticking. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0027] Figure 1 It is a schematic diagram of the overall structure of the regenerated activated carbon cooling device of the embodiment of the utility model.

[0028] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0029] In the figure: 1. Water storage tank; 2. Water pump;

[0030] 3. Water-cooled screw conveyor; 301. Water-cooled jacket; 302. Inner shell; 303. Spiral blade; 304. Transmission shaft;

[0031] 4. Spray water supply main pipe; 5. Star-shaped unloader; 6. Bag dust collector box; 7. Dust removal fan; 8. Drain pipe outlet; 9. Drive motor; 10. Exhaust pipe outlet; 11. Water supply filter; 12. Feed pipe outlet; 13. Discharge pipe outlet; 14. Temperature sensor; 15. Spray nozzle; 16. Spray water supply branch pipe; 17. Flow regulating valve; 18. Stop valve; 19. Water inlet pipe outlet; 20. Regenerated activated carbon particles. DETAILED DESCRIPTION

[0032] It should be noted that the following detailed descriptions are all illustrative and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0033] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0034] like Figure 1 A regenerated activated carbon cooling device comprises a water-cooled screw conveyor 3, wherein a feed pipe opening 12 and a discharge pipe opening 13 are respectively arranged on both sides of the water-cooled screw conveyor 3, a water inlet pipe opening 19 is arranged on the top of the water-cooled screw conveyor 3, one end of the water inlet pipe opening 19 is connected to a water pump 2, and the other end of the water inlet pipe opening 19 is connected to a water cooling jacket 301 of the water-cooled screw conveyor 3, the water inlet pipe opening 19 is connected to a spray water supply main pipe 4, the spray water supply main pipe 4 is divided into a spray water supply branch pipe 16, the spray water supply branch pipe 16 is connected to a spray nozzle 15, the spray The spray head 15 is fixed to the upper end of the inner wall of the inner shell 302 of the water-cooled screw conveyor 3. A drainage pipe outlet 8 is inserted on one side of the bottom of the water-cooled screw conveyor 3, and the drainage pipe outlet 8 is connected to the water storage tank 1. The lower side of the discharge pipe outlet 13 of the water-cooled screw conveyor 3 is connected to a star-shaped discharger 5, and a temperature sensor 14 is installed on the side wall of the discharge pipe outlet 13. An exhaust pipe outlet 10 is provided on the upper side of the discharge pipe outlet 13 of the water-cooled screw conveyor 3, and the exhaust pipe outlet 10 is connected to a bag dust removal box 6. The other end of the bag dust removal box 6 is connected to a dust removal fan 7.

[0035] The spray water supply main pipe 4 is at the top of the water-cooling screw conveyor 3 and is arranged along the axial direction of the water-cooling screw conveyor 3. One end of the spray water supply main pipe 4 is connected to the water inlet pipe port 19 of the water cooling jacket 301.

[0036] A plurality of spray water supply branch pipes 16 are distributed axially along the spray water supply main pipe 4. One end of each spray water supply branch pipe 16 is connected to the spray water supply main pipe 4, and the other end passes through the water cooling jacket 301 and extends to the inner side of the inner shell 302 of the water-cooled screw conveyor 3. A spray nozzle 15 is provided at this end. A seal is provided between the spray water supply branch pipe 16 and the shell of the water cooling jacket 301.

[0037] The spray hole diameter of the spray nozzle 15 near the feed pipe opening 12 of the water-cooled screw conveyor 3 is larger than the spray hole diameter near the discharge pipe opening 13. The density of the spray nozzle 15 near the feed pipe opening 12 of the water-cooled screw conveyor 3 is larger than the density of the spray nozzle 15 near the discharge pipe opening 13.

[0038] like Figure 1 and Figure 2 As shown, the regenerated activated carbon particles 20 are transported to the inner shell 302 of the water-cooled screw conveyor 3 through the feed pipe port 12, and the torque is output to the transmission shaft 304 through the drive motor 9. The spiral blades 303 are welded and fixedly connected to the transmission shaft 304. The spiral blades 303 rotate to push the regenerated activated carbon particles 20 toward the discharge pipe port 13. The discharge pipe port 13 is flange-sealed with the star-shaped discharger 5. The cooled material passes through the discharge pipe port 13, and the discharge amount is controlled by the star-shaped discharger 5 to quantitatively output the finished material.

[0039] like Figure 2 A spray water supply main pipe 4 is provided at the upper end of the water cooling jacket 301 of the water cooling screw conveyor 3. The spray water supply main pipe 4 is divided into a plurality of spray water supply branches 16. The ends of the spray water supply branches are connected to spray nozzles 15. The spray nozzles 15 spray water mist to cool the regenerated activated carbon particles 20.

[0040] like Figure 1 The gas generated after the heat exchange of the water mist sprayed from the spray nozzle 15 and the gas dust generated by the material are discharged from the cavity through the exhaust pipe port 10 by the dust removal fan 7 connected thereto.

[0041] like Figure 2 A flow regulating valve 17 is installed at the front end of the spray water supply main pipe 4 to control the water mist size and spraying amount of the spray nozzle 15 by adjusting the flow pressure, so as to effectively prevent the regenerated activated carbon particles 20 from being over-soaked and sticking into blocks.

[0042] The pipeline between the water inlet pipe 19 and the water pump 2 is installed with a water supply filter 11 to filter out impurities in the cooling water in the water storage tank 1, which can effectively avoid clogging of the spray nozzle 15.

[0043] The working process of the regenerated activated carbon cooling device is as follows:

[0044] The regenerated activated carbon particles 20 after pyrolysis enter the inner shell 302 of the water-cooled screw conveyor 3 through the feed pipe port 12 of the water-cooled screw conveyor 3, and the spiral blades 303 are driven by the driving motor 9 to push the high-temperature regenerated activated carbon particles 20 forward. The circulating cooling water is pressurized by the water pump 2 through the water storage tank 1 and transported to the cavity of the water-cooled jacket 301 of the water-cooled screw conveyor, so as to physically cool the outer wall of the inner shell 302 of the water-cooled screw conveyor.

[0045] At the same time, the cooling water is diverted to the spray water supply main pipe 4 through the water inlet pipe 19, and then diverted to each spray water supply branch pipe 16 in turn, and the cooling water is atomized through the spray nozzle, and the water mist is sprayed onto the regenerated activated carbon particles 20 to complete the heat exchange. The temperature state of the regenerated activated carbon particles 20 is constantly changing, and the circulating cooling water in the spray water mist and the water-cooling jacket 301 of the water-cooled screw conveyor continuously exchanges heat with the material directly or indirectly, and the material cooling effect is obvious. A temperature sensor 14 is installed on the side of the discharge pipe 13 to detect the material temperature in real time and determine whether the material collection conditions are met.

[0046] After heat exchange, the water mist absorbs heat and turns into water vapor. The dust removal fan 7 transports the gas and dust in the cavity of the inner shell 302 of the water-cooled screw conveyor through the exhaust pipe port 10 to the bag dust collector 6 for dust removal, and discharges the exhaust gas that meets environmental emission standards.

[0047] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A regenerated activated carbon cooling device, characterized in that: It includes a water-cooled screw conveyor, a water storage tank and a spray cooling module, wherein the outer wall of the water-cooled screw conveyor is provided with a water-cooling jacket and a conveying auger is provided inside; The water storage tank is connected to the water inlet of the water cooling jacket through a pipeline and a water pump, and the water discharge outlet of the water cooling jacket is connected to the water storage tank; The spray cooling module includes a spray water supply main pipe and a plurality of spray water supply branches. The spray water supply main pipe is at the top of the water-cooled screw conveyor and is arranged along the axial direction of the water-cooled screw conveyor. One end of the spray water supply main pipe is connected to the water inlet of the water cooling jacket. A plurality of spray water supply branch pipes are distributed axially along the spray water supply main pipe, one end of each spray water supply branch pipe is connected to the spray water supply main pipe, and the other end passes through the water cooling jacket and extends to the inner side of the inner shell of the water cooling screw conveyor, and a spray nozzle is arranged at the end; The diameter of the spray hole of the spray nozzle close to the feed pipe opening of the water-cooling screw conveyor is larger than the diameter of the spray hole close to the discharge pipe opening.

2. The regenerated activated carbon cooling device according to claim 1, characterized in that: The density of the spray nozzles close to the feed pipe opening of the water-cooled screw conveyor is greater than the density of the spray nozzles close to the discharge pipe opening.

3. The regenerated activated carbon cooling device according to claim 1, characterized in that: A seal is provided between the spray water supply branch pipe and the shell of the water cooling jacket.

4. The regenerated activated carbon cooling device according to claim 1, characterized in that: One end of the spray water supply main pipe connected to the water inlet pipe of the water cooling jacket is provided with a flow regulating valve.

5. The regenerated activated carbon cooling device according to claim 1, characterized in that: A water supply filter is arranged on the pipeline between the water storage tank and the water inlet pipe opening of the water cooling jacket.

6. The regenerated activated carbon cooling device according to claim 1, characterized in that: A temperature sensor is provided on the discharge pipe of the water-cooled screw conveyor.

7. The regenerated activated carbon cooling device according to claim 1, characterized in that: The exhaust pipe outlet of the water-cooled screw conveyor is connected to the bag dust removal box through a pipeline.

8. The regenerated activated carbon cooling device according to claim 7, characterized in that: The exhaust pipe outlet of the water-cooled screw conveyor is arranged at the top.

9. The regenerated activated carbon cooling device according to claim 7, characterized in that: The bag dust removal box is connected to the dust removal fan.

10. The regenerated activated carbon cooling device according to claim 9, characterized in that: The air outlet of the dust removal fan is connected to the chimney, and a water retaining cap is arranged on the top of the chimney.

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