Bypass flue drying device based on desulfurization wastewater

Abstract

The utility model relates to the technical field of energy conservation and environmental protection, in particular to a desulfurization wastewater bypass flue drying device which comprises a drying tank, supporting legs are arranged at the bottom of the drying tank, a smoke inlet pipe is arranged at the bottom of the side wall of the drying tank, a water inlet pipe is arranged at the position, above the smoke inlet pipe, of the side wall of the drying tank, and a smoke exhaust pipe is arranged at the top of the drying tank. A blow-off pipe is arranged at the bottom of the drying tank, a rotating pipe is installed at the top of the drying tank through a bearing, spraying holes facing the inner wall of the drying tank are formed in the side wall of the rotating pipe in an array mode, the top of the rotating pipe is communicated with an external air source through a high-pressure pipe, and a driving device for driving the rotating pipe is arranged at the top of the drying tank. The end, located in the drying tank, of the smoke inlet pipe is provided with a smoke guide pipe facing the top of the drying tank, and the end, located in the drying tank, of the water inlet pipe is provided with an atomizing nozzle.

Description

Technical Field

[0001] This utility model relates to the field of energy conservation and environmental protection technology, specifically to a drying device based on a bypass flue gas duct for desulfurization wastewater. Background Technology

[0002] Since the pretreatment process for desulfurization wastewater has limited effect on removing chloride ions, the pretreated high-chlorine wastewater is difficult to reuse due to its strong corrosiveness to metal equipment. In order to meet environmental protection requirements, desulfurization wastewater needs to undergo zero-discharge deep treatment.

[0003] The bypass flue drying process is the most widely used process for the deep treatment of desulfurization wastewater with zero discharge due to its simple process, low investment and stable operation.

[0004] However, during the operation of desulfurization wastewater spray drying equipment, crystals (mainly including dissolved salts, heavy metal compounds, suspended solids and organic matter) will adhere to the inner wall of the drying equipment and the surface of the filter screen. However, most desulfurization wastewater spray drying crystallization equipment on the market is not convenient for quick and automatic cleaning of the attached crystals inside, which leads to the risk of internal equipment being corroded or blocked. Regular manual cleaning will increase the labor intensity of operators. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a drying device based on the bypass flue of desulfurization wastewater. By rotating the rotating tube, the high-pressure gas ejected from the nozzle on the rotating tube can be sprayed and swept at high speed on the inner wall of the drying tank, so as to ensure that the crystals attached to the inner wall of the drying tank are cleaned.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A desulfurization wastewater bypass flue drying device includes a drying tank, a support leg at the bottom of the drying tank, a flue gas inlet pipe at the bottom of the side wall of the drying tank, a water inlet pipe above the flue gas inlet pipe on the side wall of the drying tank, a flue gas outlet pipe at the top of the drying tank, a sewage outlet pipe at the bottom of the drying tank, a rotating pipe mounted on the top of the drying tank via a bearing, an array of spray holes on the side wall of the rotating pipe facing the inner wall of the drying tank, the top of the rotating pipe being connected to an external air source via a high-pressure pipe, and a drive device for driving the rotating pipe at the top of the drying tank.

[0008] Preferably, the driving device includes a motor, and the power output end of the motor is connected to the rotating tube via a transmission belt.

[0009] Preferably, the transmission belt is a toothed belt, and the top of the rotating tube and the power output end of the motor are both provided with teeth that are adapted to the toothed belt.

[0010] Preferably, the end of the smoke inlet pipe located inside the drying tank is provided with a smoke guide pipe facing the top of the drying tank, and the end of the water inlet pipe located inside the drying tank is provided with an atomizing nozzle.

[0011] Preferably, a filter screen is provided at the connection between the top of the drying tank and the exhaust pipe, a conical temporary storage compartment is provided at the bottom of the drying tank, and a valve is provided on the sewage pipe.

[0012] Preferably, a high-frequency vibrator is mounted on the outer wall of the drying tank via a mounting base, and the power output end of the high-frequency vibrator abuts against the outer wall of the drying tank.

[0013] Preferably, the atomizing nozzle is made of stainless steel, and the atomizing nozzle is detachably connected to the water inlet pipe.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model has a simple structure. By starting the drive device, the rotating tube can be driven to rotate. Since the top of the rotating tube is connected to an external high-pressure gas source through a high-pressure pipe, the high-pressure gas will enter the rotating tube and then spray and sweep the inner wall of the drying tank through the spray hole, cleaning the crystals attached to the inner wall of the drying tank, avoiding long-term accumulation, corrosion or blockage of the equipment inside the drying tank, ensuring the service life of this device, and reducing the labor intensity of operators when cleaning the inside of the drying tank.

[0016] 2. This device effectively filters the crystals that rise with the flue gas by installing a filter screen at the connection between the top of the drying tank and the exhaust pipe. The crystals fall into the temporary storage chamber at the bottom of the drying tank. After the drying process is completed, the valve on the drain pipe can be opened to discharge the crystals from the temporary storage chamber into the drying tank.

[0017] 3. This device allows for a detachable connection between the atomizing nozzle and the water inlet pipe, making it easy to remove the atomizing nozzle from the end of the water inlet pipe for cleaning after prolonged use. The stainless steel atomizing nozzle ensures its service life and prevents corrosion.

[0018] 4. This device can quickly vibrate the outer wall of the drying tank by starting the high-frequency vibrator. The high-frequency vibrator generates periodic high-frequency vibrations, causing the material or crystals inside the drying tank to separate from the inner wall of the drying tank, thereby reducing the friction between the material and the inner wall of the drying tank. This vibration can effectively prevent crystals from adhering to the tank wall.

[0019] 5. The end of the high-pressure pipe and the rotating pipe of this device can also be connected to the cleaning agent storage tank. Under the action of the water pump, the cleaning agent can be delivered to the inside of the rotating pipe, and then sprayed onto the inner wall of the drying tank through the spray nozzle. After long-term use, the inside of the drying tank can be deeply cleaned in this way to prevent the equipment inside the drying tank from being corroded and to ensure the service life of this device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0022] Figure 3 This is a cross-sectional view of the present invention.

[0023] In the diagram: 1. Drying tank; 2. Smoke inlet pipe; 3. Smoke outlet pipe; 4. Motor; 5. Transmission belt; 6. Rotating pipe; 7. Nozzle; 8. High-pressure pipe; 9. Mounting base; 10. High-frequency vibrator; 11. Water inlet pipe; 12. Atomizing nozzle; 13. Support leg; 14. Temporary storage compartment; 15. Sewage discharge pipe; 16. Smoke guide pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] A drying device based on a desulfurization wastewater bypass flue, with the structure as follows: Figures 1-3 As shown, the device includes a drying tank 1, with supporting legs 13 at the bottom, a smoke inlet pipe 2 at the bottom of the side wall of the drying tank 1, a water inlet pipe 11 above the smoke inlet pipe 2 on the side wall of the drying tank 1, a smoke exhaust pipe 3 at the top of the drying tank 1, a sewage discharge pipe 15 at the bottom of the drying tank 1, and a rotating pipe 6 mounted on the top of the drying tank 1 via bearings. The rotating pipe 6 has an array of spray holes 7 facing the inner wall of the drying tank 1 on its side wall, and the top of the rotating pipe 6 is connected to an external air source via a high-pressure pipe 8. A drive device for driving the rotating pipe 6 is located on the top of the drying tank 1. The end of the smoke inlet pipe 2 inside the drying tank 1 has a guide pipe 16 facing the top of the drying tank 1, and the end of the water inlet pipe 11 inside the drying tank 1 has an atomizing nozzle 12.

[0027] High-temperature flue gas from the bypass flue can be transported to the interior of the drying tank 1 through the flue gas inlet pipe 2. The guide pipe 16 ensures that the high-temperature flue gas is transported to the top of the drying tank 1. Since the water inlet pipe 11 is located above the flue gas inlet pipe 2 and is equipped with atomizing nozzles 12, the desulfurization wastewater is atomized into water mist through the atomizing nozzles 12. Under the baking and driving force of the high-temperature flue gas, the water mist moves upwards towards the drying tank 1. During this upward movement, the water mist formed by the desulfurization wastewater is dried, forming water vapor and crystals (mainly including dissolved salts, heavy metal compounds, suspended solids, and organic matter). The crystals will then... As the crystals fall downwards along the inner wall of drying tank 1, some crystals will adhere to the inner wall of drying tank 1. After the desulfurization wastewater is dried, the drive device can be activated to rotate the rotating tube. Since the top of the rotating tube is connected to an external high-pressure gas source through high-pressure pipe 8, the high-pressure gas will enter the rotating tube 6 and then spray the inner wall of drying tank 1 through the spray hole 7 to clean the crystals adhering to the inner wall of drying tank 1. This avoids long-term accumulation, corrosion, or blockage of the equipment inside drying tank 1, ensuring the service life of the device and reducing the labor intensity of operators when cleaning the inside of drying tank 1.

[0028] The driving device includes a motor 4, the power output end of which is connected to the rotating tube 6 via a transmission belt 5. When the motor 4 starts, it can drive the rotating tube 6 to rotate at high speed via the transmission belt 5, which facilitates the high-pressure gas to continue to quickly clean the inner wall of the drying tank 1 through the nozzles 7 on the rotating tube 6.

[0029] The transmission belt 5 is a toothed belt, and the top of the rotating tube 6 and the power output end of the motor 4 are both provided with teeth that are adapted to the toothed belt.

[0030] To ensure that the rotating tube 6 can rotate at high speed, a toothed belt is used in conjunction with the teeth of the power output end of the motor 4 and the top of the rotating tube 6 to increase the friction between the toothed belt, the power output end of the motor 4 and the rotating tube 6, thus ensuring that the rotating tube 6 rotates at high speed and cleans the inner wall of the drying tank 1.

[0031] A filter screen is provided at the connection between the top of the drying tank 1 and the exhaust pipe 3. A conical temporary storage chamber 14 is provided at the bottom of the drying tank 1. A valve is provided on the sewage pipe 15.

[0032] To prevent crystals from being discharged from the drying tank 1 along with the flue gas and water vapor through the exhaust pipe 3, a filter screen is installed at the connection between the top of the drying tank 1 and the exhaust pipe 3 to effectively filter the crystals that rise with the flue gas. The crystals fall into the temporary storage chamber 14 at the bottom of the drying tank 1. After the drying work is completed, the valve on the drain pipe 15 is opened to discharge the crystals inside the temporary storage chamber 14 from the drying tank 1.

[0033] The atomizing nozzle 12 is made of stainless steel and is detachably connected to the water inlet pipe 11.

[0034] To prevent crystal formation and blockage inside the atomizing nozzle 12 during prolonged use, the atomizing nozzle 12 can be detachably connected to the water inlet pipe 11. This allows the atomizing nozzle 12 to be removed from the end of the water inlet pipe 11 for cleaning after extended use. The stainless steel atomizing nozzle 12 ensures its service life and prevents corrosion.

[0035] Example 2

[0036] Based on Embodiment 1, a high-frequency vibrator 10 is provided on the outer wall of the drying tank 1 via a mounting base 9, and the power output end of the high-frequency vibrator 10 abuts against the outer wall of the drying tank 1.

[0037] During the drying process of desulfurization wastewater, to avoid excessive crystallization on the inner wall of the drying tank 1, the high-frequency vibrator 10 is activated to quickly vibrate the outer wall of the drying tank 1. The high-frequency vibrator 10 generates periodic high-frequency vibrations, causing the material or crystals in the drying tank 1 to separate from the inner wall of the drying tank 1, thereby reducing the friction between the material and the inner wall of the drying tank 1. This vibration can effectively prevent crystals from adhering to the tank wall.

[0038] Example 3

[0039] Based on Embodiment 1, the end of the high-pressure pipe 8 that is far from the rotating pipe 6 can also be connected to the cleaning agent storage tank. Under the action of the water pump, the cleaning agent can be delivered into the rotating pipe 6, and then sprayed onto the inner wall of the drying tank 1 through the spray hole 7. After long-term use, the inside of the drying tank 1 can be deeply cleaned in this way, avoiding corrosion of the equipment inside the drying tank 1 and ensuring the service life of the device.

[0040] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations, additions, subtractions, or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A drying device based on a desulfurization wastewater bypass flue, comprising a drying tank (1), wherein the bottom of the drying tank (1) is provided with supporting legs (13), characterized in that, The bottom of the side wall of the drying tank (1) is provided with a smoke inlet pipe (2), and the side wall of the drying tank (1) above the smoke inlet pipe (2) is provided with a water inlet pipe (11). The top of the drying tank (1) is provided with a smoke exhaust pipe (3), and the bottom of the drying tank (1) is provided with a sewage discharge pipe (15). The top of the drying tank (1) is equipped with a rotating pipe (6) through a bearing. The side wall of the rotating pipe (6) is provided with an array of spray holes (7) facing the inner wall of the drying tank (1). The top of the rotating pipe (6) is connected to an external air source through a high-pressure pipe (8). The top of the drying tank (1) is provided with a driving device for driving the rotating pipe (6).

2. The desulfurization wastewater bypass flue drying device according to claim 1, characterized in that, The driving device includes a motor (4), and the power output end of the motor (4) is connected to the rotating tube (6) via a transmission belt (5).

3. The desulfurization wastewater bypass flue drying device according to claim 2, characterized in that, The transmission belt (5) is a toothed belt, and the top of the rotating tube (6) and the power output end of the motor (4) are both provided with teeth that are compatible with the toothed belt.

4. The desulfurization wastewater bypass flue drying device according to claim 1, characterized in that, The end of the inlet pipe (2) located inside the drying tank (1) is provided with a smoke guide pipe (16) facing the top of the drying tank (1), and the end of the water inlet pipe (11) located inside the drying tank (1) is provided with an atomizing nozzle (12).

5. The desulfurization wastewater bypass flue drying device according to claim 1, characterized in that, A filter screen is provided at the connection between the top of the drying tank (1) and the exhaust pipe (3), a conical temporary storage chamber (14) is provided at the bottom of the drying tank (1), and a valve is provided on the sewage pipe (15).

6. The desulfurization wastewater bypass flue drying device according to claim 1, characterized in that, A high-frequency vibrator (10) is provided on the outer wall of the drying tank (1) via a mounting base (9), and the power output end of the high-frequency vibrator (10) abuts against the outer wall of the drying tank (1).

7. A desulfurization wastewater bypass flue drying device according to claim 4, characterized in that, The atomizing nozzle (12) is made of stainless steel and is detachably connected to the water inlet pipe (11).

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