Integrated waste activated carbon multistage regeneration system with waste heat recovery

Abstract

The utility model discloses a waste activated carbon multistage regeneration system of integrated afterheat recovery, including the recovery assembly of installation in the one end of rotary drum dryer for afterheat recovery, and the inner wall one end of rotary drum dryer's feed end is equipped with the blanking plate, and one end of rotary drum dryer is equipped with the boiler, and the flue gas export of boiler installs the boiler flue in, and the middle section of boiler flue is connected with the induced draft fan, and the other end of boiler flue is connected with the central tube. The utility model discloses a recovery assembly collection rotary drum dryer's afterheat flue gas, and after the handling, is transported to the next stage desorption section and is repeatedly used, avoids the direct loss of flue gas heat, and then can improve the afterheat utilization rate, reduces the energy consumption.

Description

Technical Field

[0001] This utility model belongs to the technical field of activated carbon regeneration equipment, specifically relating to a multi-stage regeneration system for waste activated carbon that integrates waste heat recovery. Background Technology

[0002] Activated carbon, due to its porous structure, large specific surface area, and physicochemical adsorption properties, is widely used in various fields. However, after adsorption saturation, spent activated carbon accumulates pollutants and is classified as hazardous solid waste, facing problems such as difficult treatment, high transportation costs, and the potential for secondary pollution. In the traditional process of regenerating spent activated carbon, the high-temperature flue gas generated by the boiler is usually directly discharged or only used once, resulting in a large amount of waste heat not being effectively recovered, leading to energy waste, high equipment energy consumption, and low waste heat utilization rate. Utility Model Content

[0003] The purpose of this invention is to provide a multi-stage regeneration system for waste activated carbon that integrates waste heat recovery, so as to solve the technical problem of non-recovery and utilization of waste heat in existing activated carbon regeneration equipment.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A multi-stage regeneration system for waste activated carbon with integrated waste heat recovery includes a recovery component installed at one end of a rotary drum dryer for waste heat recovery. The inner wall of the feed end of the rotary drum dryer is provided with a feeding plate, and a boiler is provided at one end of the rotary drum dryer. A boiler flue is installed in the flue gas outlet of the boiler. An induced draft fan is connected to the middle section of the boiler flue, and a central pipe is connected to the other end of the boiler flue.

[0006] The other end of the central tube passes through the discharge end of the rotary dryer and is located inside the rotary dryer. A sealing ring is bonded to the outer surface of the through end of the central tube.

[0007] As a further embodiment of this utility model, a first spiral guide ring is installed at one end of the inner wall of the central tube, and multiple smoke outlets are provided on the lower surface of the inner wall of the central tube. Two second spiral guide rings are installed at the other end of the inner wall of the central tube, and the number of turns of the two second spiral guide rings is less than that of the first spiral guide ring. The ends of the two second spiral guide rings and the first spiral guide ring are located inside the smoke outlets.

[0008] As a further embodiment of this utility model, the recycling component includes a suction fan located on one side of the feed end of the rotary drum dryer. The suction port of the suction fan is connected to an air inlet pipe, and the other end of the air inlet pipe passes through the feed end of the rotary drum dryer and is located at the lower end of the discharge plate. The passing end is sealed with packing.

[0009] As a further embodiment of this utility model, a filter screen is installed at one end of the inner wall of the air intake pipe, and a slag collection block is connected to one end of the lower surface of the inner wall of the air intake pipe, and the waste residue can be collected through the slag collection block during waste heat recovery.

[0010] As a further embodiment of this utility model, the air outlet of the suction fan is connected to an air outlet pipe, which can be connected to an external desorption section pipe through a flange interface.

[0011] As a further preferred embodiment of this utility model, the lower surface of the discharge end of the rotary drum dryer is connected to a discharge block, one end of the lower surface of the discharge block is connected to an installation box, a conveyor belt is provided inside the installation box, a cooling fan is provided at one end of the upper surface of the installation box, a pipe is connected to one side of the cooling fan and the pipe is connected to one end of the discharge block, and the cooling fan delivers airflow into the discharge block through the pipe to achieve cooling.

[0012] Compared with existing technologies, the multi-stage regeneration system for waste activated carbon with integrated waste heat recovery provided by this utility model has the following beneficial effects:

[0013] The system collects the waste heat flue gas in the rotary dryer 1 through the recovery component 3, and after processing, it is transported to the next stage desorption section for reuse, thus avoiding the direct loss of flue gas heat, thereby improving the waste heat utilization rate and reducing energy consumption. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only examples of embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the sealing ring structure in an embodiment of the present invention;

[0017] Figure 3 This is a schematic diagram of the rotary drum dryer in an embodiment of the present invention;

[0018] Figure 4 This is a schematic diagram of the structure of the second spiral guide ring in an embodiment of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the recycling component in an embodiment of this utility model.

[0020] Figure label:

[0021] 1. Rotary drum dryer; 101. Feeding plate;

[0022] 2. Boiler; 201. Exhaust fan; 202. Boiler flue; 203. Central tube; 204. Sealing ring; 205. First spiral guide ring; 206. Flue outlet; 207. Second spiral guide ring;

[0023] 3. Recycling components; 301. Suction fan; 302. Air inlet pipe; 303. Filter screen; 304. Slag collection block; 305. Air outlet pipe;

[0024] 4. Mounting box; 401. Discharge block; 402. Cooling fan; 403. Conveyor belt. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0026] In the description of the embodiments of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0027] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, an integral connection, or a detachable connection; they can refer to the internal connection of two components; they can refer to a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0028] See appendix Figures 1-5 As shown in the figure, an embodiment of the present invention provides a multi-stage regeneration system for waste activated carbon with integrated waste heat recovery, including a recovery component 3 installed at one end of a rotary dryer 1 for waste heat recovery, a feeding plate 101 provided at one end of the inner wall of the feed end of the rotary dryer 1, a boiler 2 provided at one end of the rotary dryer 1, a boiler flue 202 installed in the flue gas outlet of the boiler 2, an induced draft fan 201 connected to the middle section of the boiler flue 202, and a central pipe 203 connected to the other end of the boiler flue 202.

[0029] The other end of the central tube 203 passes through the discharge end of the rotary dryer 1 and is located inside the rotary dryer 1. A sealing ring 204 is bonded to the outer surface of the through end of the central tube 203.

[0030] A first spiral guide ring 205 is installed at one end of the inner wall of the central tube 203. Multiple smoke outlets 206 are provided on the lower surface of the inner wall of the central tube 203. Two second spiral guide rings 207 are installed at the other end of the inner wall of the central tube 203. The number of turns of the two second spiral guide rings 207 is less than that of the first spiral guide ring 205. The ends of the two second spiral guide rings 207 and the first spiral guide ring 205 are located inside the smoke outlets 206.

[0031] In the above technical solution, boiler 2 generates flue gas, which is pressurized by induced draft fan 201 and enters the central pipe 203 through boiler flue 202, and then enters rotary drum dryer 1. This facilitates the entry of heated flue gas to achieve efficient heating and regeneration of waste activated carbon, making it convenient to use a multi-stage regeneration system for waste activated carbon with integrated waste heat recovery.

[0032] During operation, the flue gas generated by the boiler 2 is drawn into the central pipe 203 by the induced draft fan 201. Then, it passes through the first spiral guide ring 205 and the second spiral guide ring 207 installed in the central pipe 203, with the end located in the flue gas outlet 206. This allows the flue gas to be discharged from the flue gas outlet 206 in the central pipe 203, preventing flue gas residue in the central pipe 203 and thus improving the flue gas utilization efficiency. This allows the waste activated carbon entering the rotary drum dryer 1 from the feed end to evaporate the moisture, providing a dry material basis for subsequent desorption or activation processes. Afterward, the flue gas can be absorbed and reused by the recovery component 3, reducing energy consumption.

[0033] See appendix Figures 3 to 5 As shown, the recovery component 3 includes a suction fan 301, which is located on the feed end side of the rotary dryer 1. The suction port of the suction fan 301 is connected to an air inlet pipe 302. The other end of the air inlet pipe 302 passes through the feed end of the rotary dryer 1 and is located at the lower end of the discharge plate 101, with the through end sealed with packing. A filter screen plate 303 is installed on one end of the inner wall of the air inlet pipe 302, and a slag collection block 304 is connected to one end of the lower surface of the inner wall of the air inlet pipe 302. During waste heat recovery, the waste residue can be collected through the slag collection block 304. The air outlet of the suction fan 301 is connected to an air outlet pipe 305, which can be connected to an external desorption section pipeline through a flange interface. The lower surface of the discharge end of the rotary dryer 1 is connected to a discharge block 401. One end of the lower surface of the discharge block 401 is connected to an installation box 4. The installation box 4 is equipped with a conveyor belt 403. One end of the upper surface of the installation box 4 is equipped with a cooling fan 402. One side of the cooling fan 402 is connected to a pipe, and the pipe is connected to one end of the discharge block 401. The cooling fan 402 delivers airflow into the discharge block 401 through the pipe to achieve cooling.

[0034] To improve the waste heat recovery effect, the exhaust gas in the rotary dryer 1 is drawn out by the suction fan 301 and the air inlet pipe 302. Then, the carbon powder is intercepted by the filter screen plate 303 installed in the air inlet pipe 302 to avoid affecting subsequent use. The filtered impurities fall into the slag collection block 304 for collection. The flange interface of the exhaust pipe 305 is connected to the desorption section. The purified exhaust gas enters the desorption section through the exhaust pipe 305 to realize the recovery and reuse of waste heat. The dried carbon falls through the discharge block 401, and the cooling fan 402 blows in cold air to cool it down. The cooled regenerated carbon falls onto the conveyor belt 403 for output to the next stage of processing.

[0035] Rotary drum dryer 1 is a mature existing technology, so I will not go into too much detail here.

[0036] In summary, this utility model embodiment provides a multi-stage regeneration system for waste activated carbon that integrates waste heat recovery. By collecting the waste heat flue gas in the rotary dryer 1 through the recovery component 3, the system processes the waste heat and then transports it to the next stage desorption section for reuse. This avoids the direct loss of heat from the flue gas, thereby improving the waste heat utilization rate and reducing energy consumption.

[0037] The foregoing has shown and described the basic principles of the present invention. The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. The above embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Any modifications, equivalent substitutions, and improvements made within the scope of the present invention without departing from the scope of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-stage regeneration system for waste activated carbon with integrated waste heat recovery, comprising a recovery component (3) installed at one end of a rotary dryer (1) for waste heat recovery, characterized in that: The rotary dryer (1) has a feeding plate (101) on one end of the inner wall of the feeding end, a boiler (2) on one end of the rotary dryer (1), a boiler flue (202) installed in the flue gas outlet of the boiler (2), an induced draft fan (201) connected in the middle section of the boiler flue (202), and a central pipe (203) connected to the other end of the boiler flue (202). The other end of the central tube (203) passes through the discharge end of the rotary dryer (1) and is located inside the rotary dryer (1). A sealing ring (204) is bonded to the outer surface of the through end of the central tube (203).

2. The multi-stage regeneration system for waste activated carbon with integrated waste heat recovery according to claim 1, characterized in that: A first spiral guide ring (205) is installed at one end of the inner wall of the central tube (203). A plurality of smoke outlets (206) are provided on the lower surface of the inner wall of the central tube (203). Two second spiral guide rings (207) are installed at the other end of the inner wall of the central tube (203). The number of turns of the two second spiral guide rings (207) is less than that of the first spiral guide ring (205). The ends of the two second spiral guide rings (207) and the first spiral guide ring (205) are located inside the smoke outlets (206).

3. The multi-stage regeneration system for waste activated carbon with integrated waste heat recovery according to claim 2, characterized in that: The recycling component (3) includes a suction fan (301), which is located on the feed end side of the rotary dryer (1). The suction port of the suction fan (301) is connected to an air inlet pipe (302). The other end of the air inlet pipe (302) passes through the feed end of the rotary dryer (1) and is located at the lower end of the discharge plate (101). The passing end is sealed with packing.

4. The multi-stage regeneration system for waste activated carbon with integrated waste heat recovery according to claim 3, characterized in that: A filter screen plate (303) is installed at one end of the inner wall of the air intake pipe (302), and a slag collection block (304) is connected to one end of the lower surface of the inner wall of the air intake pipe (302), and the waste residue can be collected through the slag collection block (304) during waste heat recovery.

5. The multi-stage regeneration system for waste activated carbon with integrated waste heat recovery according to claim 4, characterized in that: The exhaust port of the suction fan (301) is connected to an exhaust pipe (305), which can be connected to an external desorption section pipe through a flange interface.

6. A multi-stage regeneration system for waste activated carbon with integrated waste heat recovery according to any one of claims 1-5, characterized in that: The lower surface of the discharge end of the rotary dryer (1) is connected to a discharge block (401). One end of the lower surface of the discharge block (401) is connected to an installation box (4). The installation box (4) is equipped with a conveyor belt (403). One end of the upper surface of the installation box (4) is equipped with a cooling fan (402). One side of the cooling fan (402) is connected to a pipe, and the pipe is connected to one end of the discharge block (401). The cooling fan (402) delivers airflow into the discharge block (401) through the pipe to achieve cooling.

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