Anti-blocking cleaning device for demister of drying tower

Abstract

The utility model discloses an anti-blocking cleaning device for a demister of a drying tower, which comprises an operating platform and is characterized in that a multi-stage centrifugal pump is fixedly arranged at the top of the operating platform through a support, a discharge pipe is communicated and connected onto the multi-stage centrifugal pump, a blowing fan or a vortex spray head is mounted at the discharge end of the discharge pipe, and the spray head is connected with the operating platform. And the blowing fan or the vortex nozzle can directly act on a demister platform of the drying tower. According to the utility model, the mist eliminator layer is flushed at a high speed through the vortex nozzles, so that the cleaning range and the cleaning efficiency are improved; the blowing fan is replaced for blowing after concentrated acid spraying and cleaning, and acid mud remaining in the mist eliminator layer is completely blown away.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment technology, specifically to a demister anti-clogging cleaning device for a drying tower. Background Technology

[0002] Due to external power supply issues, multiple emergency power outages often occur within a short period. These frequent outages cause high-temperature steam in the desulfurization analysis tower to carry large amounts of moisture into the drying tower, diluting the concentrated sulfuric acid already present in the demister mesh. This indirectly leads to dilute acid corrosion in the demister, eventually causing sulfate buildup and blockage. Furthermore, several layers of metal mesh on the upper surface of the demister are corroded, affecting the ventilation of the mesh demister. Increased pressure resistance in the demister has the following impacts on production: 1) The negative pressure at the SO2 fan inlet increases, reducing the maximum airflow from the original 110,000 Nm³. 3 / h decreased to 80000 Nm 3 1) The negative pressure at the SO2 blower inlet increases, and the demister, which is made of small pieces of wire mesh, can be blown through or even overturned, causing the flue gas to short-circuit and drastically reducing the acid mist collection effect. This leads to corrosion of the pipes, blowers, heat exchangers, converters, and catalysts downstream of the drying tower, affecting equipment lifespan. 2) The maximum extraction capacity of the SO2 blower also decreases from 110,000 Nm3 / h to 85,000 Nm3 / h, severely impacting copper smelting and concentrated acid production. Low-load production can even disrupt the normal process of the smelting system. Therefore, it is usually necessary to dismantle the demister and clean it with sodium hydroxide solution and water.

[0003] However, the traditional method of cleaning demisters involves dismantling the demister and cleaning it with sodium hydroxide solution and water. This process requires at least a 24-hour shutdown, which the smelting furnace's production process cannot accommodate a temporary 24-hour shutdown. Therefore, a rapid cleaning device must be designed based on the on-site equipment conditions. Utility Model Content

[0004] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a demister anti-clogging cleaning device for drying towers, which solves the problem of easy clogging of existing drying tower demisters.

[0005] The technical solution adopted by this utility model to achieve the above-mentioned objective is: a demister anti-clogging cleaning device for a drying tower, comprising an operating platform, characterized in that: a multi-stage centrifugal pump is fixedly mounted on the top of the operating platform by a bracket, a discharge pipe is connected to the multi-stage centrifugal pump, and a blower fan or vortex nozzle is installed at the discharge end of the discharge pipe, the blower fan or the vortex nozzle can directly act on the demister platform of the drying tower.

[0006] To further improve the ease of use of the demister anti-clogging cleaning device for drying towers, the present invention adopts the following solution: the operating platform is provided with a buffer structure, the buffer structure includes a first support block, a buffer spring and a second support block arranged vertically, one end of the buffer spring is connected to the first support block and the other end of the buffer spring is connected to the second support block, and the bracket is fixed by the second support block.

[0007] To further improve the ease of use of the demister anti-clogging cleaning device for drying towers, the present invention adopts the following solution: both the left and right ends of the operating platform are equipped with balance plates for preventing tipping.

[0008] To further improve the ease of use of the demister anti-clogging cleaning device for the drying tower, the present invention adopts the following solution: a telescopic pipe is provided between the discharge pipe and the multi-stage centrifugal pump.

[0009] To further improve the ease of use of the demister anti-clogging cleaning device for the drying tower, the present invention adopts the following solution: when the blower fan is installed at the discharge end of the discharge pipe, the multi-stage centrifugal pump is connected to the air box through the air guide pipe.

[0010] To further improve the ease of use of the demister anti-clogging cleaning device for the drying tower, the present invention adopts the following solution: when the vortex nozzle is installed at the discharge end of the discharge pipe, the multi-stage centrifugal pump is connected to the water tank through the liquid guide pipe.

[0011] The beneficial effects of this utility model are as follows: This anti-clogging cleaning device for demisters in drying towers uses vortex nozzles to rinse the demister layer at high speed, which improves the cleaning range and cleaning efficiency; by replacing the blower fan to blow away the acid sludge remaining in the demister layer after concentrated acid spray cleaning, the acid sludge is completely blown away. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention under purging conditions;

[0013] Figure 2 for Figure 1 A schematic diagram of the structure in the purging state (with the telescopic tube extended);

[0014] Figure 3 This is a schematic diagram of the structure of the present invention under rinsing conditions;

[0015] Figure 4 This is a schematic diagram of the structure of the present invention for purging the mist trap layer;

[0016] Figure 5 This is a schematic diagram of the structure for rinsing the mist trap layer according to this utility model.

[0017] In the diagram: 1. Operating platform, 2. First support block, 3. Buffer spring, 4. Second support block, 5. Balance plate, 6. Bracket, 7. Multistage centrifugal pump, 8. Discharge pipe, 9. Telescopic pipe, 10. Blower fan, 11. Air box, 12. Air guide pipe, 13. Vortex nozzle, 14. Liquid guide pipe, 15. Water tank, a. Demister platform of drying tower, b. Foam eliminator layer. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1 to 3 The present invention provides a demister anti-clogging cleaning device for a drying tower, comprising an operating table 1.

[0020] In this invention: a multi-stage centrifugal pump 7 is mounted on the top of the operating platform 1 via a bracket. A discharge pipe 8 is connected to the multi-stage centrifugal pump 7. A blower fan 10 or a vortex nozzle 13 is installed at the discharge end of the discharge pipe 8. The blower fan 10 or the vortex nozzle 13 can directly act on the demister platform a of the drying tower. During use, after sufficient purging time has elapsed on the demister platform a of the drying tower, the SO2 fan and the drying circulation pump are stopped. The manholes at both ends of the demister layer and the manhole of the acid separator layer are opened to ensure that acid does not splash onto personnel. Then, the vortex nozzle 13 is opened for rinsing.

[0021] After observing the acid flowing down from the demister layer b through the manhole of the acid separator, it changes from turbid to clear, indicating that the hardened acid sludge inside has softened and most of it has been washed off. Then, replace the blower fan 10 and use the compressed air generated by the blower fan 10 to purge the demister layer b. After no more acid sludge and sulfuric acid fall from the bottom of the demister layer b, the blowing of the blower fan 10 can be stopped. At this time, the manhole can be closed to resume production.

[0022] Furthermore, the operating table 1 is equipped with a buffer structure inside. The buffer structure includes a first support block 2, a buffer spring 3, and a second support block 4 arranged vertically. One end of the buffer spring 3 is connected to the first support block 2, and the other end of the buffer spring 3 is connected to the second support block 4. The bracket 6 is fixed by the second support block 4.

[0023] The buffer structure indirectly acts on the multi-stage centrifugal pump 7, slowing its movement and allowing it to stop gradually, thus reducing impact force and protecting the safety of the multi-stage centrifugal pump 7, blower fan 10, and vortex nozzle 13; it also reduces resonance and vibration, thereby reducing noise and improving the working environment; and it makes its movement smoother, reducing vibration and impact caused by sudden stops or starts, thus improving work efficiency.

[0024] Furthermore, balance plates 5 are provided at both ends of the operating platform 1. During rinsing or purging operations, the balance plates 5 on both sides can effectively prevent the operating platform 1 from tipping over.

[0025] Furthermore, a telescopic pipe 9 is provided between the discharge pipe 8 and the multi-stage centrifugal pump 7. The change in length or height of the telescopic pipe 9 helps to adjust the orientation of the flushing or purging operation, thereby effectively enhancing the flushing or purging efficiency.

[0026] Please see Figure 4 Specifically, when the blower fan 10 is installed at the discharge end of the discharge pipe 8, the multi-stage centrifugal pump 7 is connected to the air box 11 through the air guide pipe 12. After the concentrated acid spray cleaning is performed by replacing the blower fan, the acid sludge remaining in the demister layer is completely blown away.

[0027] Please see Figure 5 Specifically, when the vortex nozzle 13 is installed at the discharge end of the discharge pipe 8, the multi-stage centrifugal pump 7 is connected to the water tank 15 through the liquid guide pipe 14. By replacing the vortex nozzle, the mist eliminator layer is rinsed at high speed, which improves the cleaning range and cleaning efficiency.

[0028] All standard parts used in this utility model can be customized from non-standard parts available on the market, according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A demister anti-blocking cleaning device for a drying tower, comprising an operating table (1), characterized in that: The top of the operating platform (1) is fixed with a multi-stage centrifugal pump (7) through a support (6), a discharge pipe (8) is connected to the multi-stage centrifugal pump (7) in communication, and a blowing fan (10) or a vortex nozzle (13) is installed at the discharge end of the discharge pipe (8).

2. A device for preventing the blocking of a mist eliminator of a drying tower according to claim 1, characterized in that: The inside of the operating platform (1) is provided with a buffer structure, the buffer structure comprises a first support block (2) arranged vertically, a buffer spring (3) and a second support block (4), one end of the buffer spring (3) is connected to the first support block (2), the other end of the buffer spring (3) is connected to the second support block (4), and the support (6) is supported through the second support block (4).

3. A device for preventing the blocking of a mist eliminator of a drying tower according to claim 2, characterized in that: The left and right ends of the operating platform (1) are each provided with a balance plate (5) for preventing tilting.

4. The anti-blocking cleaning device for the demister of the drying tower according to claim 1, characterized in that: The discharge pipe (8) and the multi-stage centrifugal pump (7) are provided with an expansion pipe (9) therebetween.

5. A device for preventing the blocking of a mist eliminator of a drying tower according to claim 1, characterized in that: When the discharge end of the discharge pipe (8) is installed with the blowing fan (10), the multi-stage centrifugal pump (7) is connected to a bellow (11) in communication through a gas guide pipe (12).

6. A device for preventing the blocking of a mist eliminator of a drying tower according to claim 1, characterized in that: When the discharge end of the discharge pipe (8) is installed with the vortex nozzle (13), the multi-stage centrifugal pump (7) is connected to a water tank (15) in communication through a liquid guide pipe (14).

7. A device for preventing the blocking of a mist eliminator of a drying tower according to claim 1, characterized in that: The blowing fan (10) or the vortex nozzle (13) can directly act on a dry tower demister platform (a).

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