Waste heat recycling device for aluminum powder production

Abstract

The utility model particularly relates to a waste heat recycling device for aluminum powder production, which comprises a combustion furnace, the combustion furnace is connected with a smoke exhaust pipe, the smoke exhaust pipe is connected with a heat exchanger, the heat exchanger comprises a first air inlet pipe and a first air outlet pipe, and a water inlet pipe and a water outlet pipe are respectively arranged at two ends of the heat exchanger. The two ends in the heat exchanger are connected with end plates correspondingly, a plurality of pipelines are communicated between the two end plates, the first air outlet pipe is connected with a tail gas purifying device, the bottom of the heat exchanger is connected with a condensate water collecting pipe, a movable plate is arranged between the two end plates and penetrates through the pipelines, and the movable plate is in threaded connection with a threaded rod. The two ends of the threaded rod are rotationally connected with the two end plates correspondingly, one end of the threaded rod extends out of the heat exchanger, a driving motor is installed at the end, located outside, of the threaded rod, and the condensate water collecting pipe is connected with a condensate water purifying device.

Description

TECHNICAL FIELD

[0001] The utility model relates to a waste heat recovery equipment field, concretely relates to a waste heat recycling device of aluminium powder production. BACKGROUND

[0002] In the aluminium powder production process, first aluminium ingot is heated and melted into aluminium water, then the aluminium water is put into the holding furnace for heat preservation and transfer, and finally the aluminium powder is formed through the spray blowing device, the surface air temperature of the aluminium water is as high as above 900 degrees, therefore a large amount of waste heat is lost in the melting of the aluminium ingot and the heat preservation and transfer of the aluminium water. SUMMARY

[0003] The utility model provides a waste heat recycling device of aluminium powder production.

[0004] The utility model discloses a waste heat recycling device of aluminium powder production, including combustion furnace, and the combustion furnace is connected with the smoke pipe, and the smoke pipe is connected with the heat exchanger, and the heat exchanger includes the air inlet pipe no.

[0005] The condensate water purification device includes a dosing tank and a purification tank.

[0006] The dosing pipe is fixedly installed on the inner wall of the dosing tank, and a plurality of dosing holes are formed in the dosing pipe.

[0007] The top and bottom of the purification tank are connected with the water inlet pipe and the drain pipe no.

[0008] A steam-water separator is installed between the purification shell and the first air outlet pipe. The air inlet of the steam-water separator is connected to the first air outlet pipe, and a ventilation pipe is connected between the air outlet of the steam-water separator and the air inlet of the purification shell.

[0009] The height of the upper and lower baffles is less than the height of the purification shell.

[0010] The technical solution of this utility model has the following positive effects: The exhaust pipe of the combustion furnace of this utility model is connected to a heat exchanger, so that the high-temperature flue gas enters the heat exchanger, and cold water enters the water inlet pipe, which heats the cold water into hot water, thereby cooling the high-temperature flue gas; the exhaust pipe of the heat exchanger is connected to a tail gas purification device to purify the cooled flue gas to meet the standards before it is discharged; a movable plate is installed on the pipe, which can collect condensate, and the condensate can be recycled after purification. Attached Figure Description

[0011] Figure 1 This is a schematic front view of the structure of this utility model. Detailed Implementation

[0012] like Figure 1 As shown, a waste heat recovery and utilization device for aluminum powder production includes a combustion furnace 1, which is connected to a flue pipe 2. The flue pipe 2 is connected to a heat exchanger, which includes an inlet pipe 3 and an outlet pipe 4. The two ends of the heat exchanger are a water inlet pipe 5 and an outlet pipe 6, respectively. End plates 7 are connected to both ends inside the heat exchanger, and multiple pipes 8 connect the two end plates 7. The outlet pipe 4 is connected to a tail gas purification device, which includes a purification shell 9. An upper baffle plate 10, a lower baffle plate 11, and an activated carbon filter layer 12 are fixedly connected in sequence inside the purification shell 9. A fan 13 is connected to the purification shell 9. A condensate collection pipe 14 is connected to the bottom of the heat exchanger. A movable plate 15 is arranged between the two end plates 7, passing through the pipes 8. A threaded connection is made to the movable plate 15. A threaded rod 16 has two ends rotatably connected to two end plates 7. One end of the threaded rod 16 extends outside the heat exchanger, and a drive motor 17 is installed at the external end of the threaded rod 16. A condensate collection pipe 14 is connected to a condensate purification device. Specifically, during the aluminum powder processing process, the hot gas released from the exhaust pipe 2 enters the heat exchanger through the inlet pipe 3 for heat exchange. The water that needs to be heated enters through the inlet pipe 5 and then enters the pipe 8 to complete the heat exchange. The water is heated, the gas is cooled, and the condensate is collected. The drive motor 17 starts, causing the threaded rod 16 to rotate, which moves the moving plate 15 to scrape the condensate off the pipe 8. The condensate then enters the condensate purification device through the condensate collection pipe 14 at the bottom for purification.

[0013] The condensate water purification device comprises a dosing tank 18 and a purification tank 20, the upper portion of the dosing tank 18 is provided with a drain pipe two 24, the drain pipe two 24 is communicated with the purification tank 20, the dosing tank 18 is provided with a dosing pipe 22, the dosing opening of the dosing pipe 22 extends to the outside of the dosing tank 18, the lower portion of the purification tank 20 is provided with a supporting net 23, and the top of the supporting net 23 is provided with a zeolite layer 25; specifically, the condensate water enters the dosing tank 18 from the condensate water collecting pipe 14, the flocculating agent is added into the dosing tank 18, the flocculating agent is combined with the suspended matter of the condensate water and is precipitated, and the clarified liquid in the upper portion enters the purification tank 20 from the drain pipe two 24 to be purified.

[0014] The top and bottom of the purification tank 20 are respectively connected with a water inlet pipe 19 and a drain pipe one 21, the water inlet pipe 19 is connected with a three-way valve 35, the three-way valve 35 is respectively communicated with the drain pipe two 24 and a blowdown pipe 36, the side of the drain pipe one 21 is connected with a backwashing pipe 26, the drain pipe two 24 is provided with a water inlet valve, the blowdown pipe 36 is provided with a blowdown valve, the drain pipe one 21 is provided with a drain valve, and the backwashing pipe 26 is provided with a backwashing valve; specifically, the water entering from the dosing tank 18 enters through the water inlet pipe 19 and is filtered through the zeolite layer 25, and finally is discharged through the drain pipe one 21 at the bottom to be recycled; the zeolite layer 25 needs to be backwashed regularly, at this time, the water inlet valve 28 and the drain valve 33 need to be closed, the blowdown valve 32 and the backwashing valve 34 need to be opened, the backwashing pipe 26 is water-connected to backwash, and finally is discharged through the water inlet pipe 19 and the blowdown pipe on the right.

[0015] The dosing pipe 22 is in a serpentine structure, the dosing pipe 22 is fixedly installed on the inner wall of the dosing tank 18, and a plurality of dosing holes 27 are formed in the dosing pipe 22; specifically, the dosing pipe 22 is in a serpentine structure, so that the flocculating agent is more uniformly dispersed in the dosing tank 18.

[0016] The steam-water separator 29 is arranged between the purification shell 9 and the gas outlet pipe one 4, the gas inlet of the steam-water separator 29 is connected with the gas outlet pipe one 4, and the gas outlet of the steam-water separator 29 is connected with the gas inlet of the purification shell 29 through the air pipe 30; the gas discharged from the gas outlet pipe one 4 of the heat exchanger contains a certain amount of water, the water is separated through the steam-water separator 29, then is purified, and finally is discharged into the atmosphere.

[0017] The upper baffle 10 and the lower baffle 11 have a height less than that of the purification shell 9; specifically, the upper baffle 10 and the lower baffle 11 can make the gas stay in the purification shell 9 for a longer time, thereby improving the filtering effect.

Claims

1. A waste heat recovery and utilization device for aluminum powder production, comprising a combustion furnace connected to a flue gas pipe, characterized in that: The exhaust pipe is connected to a heat exchanger, which includes an inlet pipe and an outlet pipe. The two ends of the heat exchanger are a water inlet pipe and a water outlet pipe, respectively. End plates are connected to both ends inside the heat exchanger, and multiple pipes connect the two end plates. An exhaust pipe is connected to a tail gas purification device, which includes a purification shell. Inside the purification shell, an upper baffle plate, a lower baffle plate, and an activated carbon filter layer are fixedly connected in sequence. A fan is connected to the purification shell. A condensate collection pipe is connected to the bottom of the heat exchanger. A movable plate is installed between the two end plates, passing through the pipes. A threaded rod is threaded onto the movable plate, with both ends rotatably connected to the two end plates. One end of the threaded rod extends outside the heat exchanger, and a drive motor is installed at the external end of the threaded rod. The condensate collection pipe is connected to a condensate purification device.

2. The waste heat recovery and utilization device for aluminum powder production according to claim 1, characterized in that: The condensate purification device includes a dosing tank and a purification tank. A second drain pipe is installed at the top of the dosing tank and is connected to the purification tank. A dosing pipe is installed inside the dosing tank, and the dosing port of the dosing pipe extends to the outside of the dosing tank. A support net is installed at the bottom of the purification tank, and a zeolite layer is placed on top of the support net.

3. The waste heat recovery and utilization device for aluminum powder production according to claim 1, characterized in that: The dosing tube has a serpentine structure and is fixedly installed on the inner wall of the dosing tank. Multiple dosing holes are opened on the dosing tube.

4. The waste heat recovery and utilization device for aluminum powder production according to claim 2, characterized in that: The top and bottom of the purification box are connected to the water inlet pipe and the drain pipe 1, respectively. The bottom of the drain pipe 2 is connected to the water inlet pipe. The side of the drain pipe 1 is connected to the backwash pipe. The drain pipe 2 is equipped with a water inlet valve and a sewage valve on both sides of the water inlet pipe. The drain pipe 1 is equipped with a drain valve. The backwash pipe is equipped with a backwash valve.

5. The waste heat recovery and utilization device for aluminum powder production according to claim 2, characterized in that: A steam-water separator is installed between the purification shell and the first air outlet pipe. The air inlet of the steam-water separator is connected to the first air outlet pipe, and a ventilation pipe is connected between the air outlet of the steam-water separator and the air inlet of the purification shell.

6. The waste heat recovery and utilization device for aluminum powder production according to claim 2, characterized in that: The height of the upper and lower baffles is less than the height of the purification shell.

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