Novel efficient packed tower device

Abstract

A novel efficient packed tower device comprises a packed tower body and a liquid collecting box, and a demister, a spraying layer, a packing layer, a grating layer, an exhaust port and an air inlet are arranged on the packed tower body; the spray tower is characterized in that the spray layer comprises a spray ring pipe, the outer edge of the spray ring pipe is provided with a liquid inlet and is communicated with a submerged pump inserted into the liquid collecting box through a liquid feeding pipe, a plurality of connecting ports are uniformly distributed on the inner edge of the spray ring pipe, mounting ports are uniformly distributed on the outer edge of the packed tower body, each mounting port is connected with a flange nozzle through a flange, and the flange nozzles are communicated with the spray ring pipe. The nozzle at the inner end of the flange nozzle is inserted into the packed tower body through the mounting port; the outer end of the flange nozzle is movably connected with the connecting port; the grid layer comprises upper buckling plates, wave plate grids and lower buckling plates, the wave plate grids are evenly distributed and clamped together through the multiple upper buckling plates and the multiple lower buckling plates, the cross section of each wave plate grid is in a V shape, and the protruding parts of every two adjacent wave plate grids are mutually overlapped. The device can improve the dust removal and purification efficiency of the packed tower and reduce the maintenance difficulty of the spraying layer.

Description

Technical Field

[0001] The utility model belongs to a waste gas treatment device, in particular to a novel high-efficiency packed tower device. Background Art

[0002] The atmospheric environment is an important environmental factor on which human beings depend for survival. Air pollution not only destroys the atmospheric environment, but also causes damage to all important environmental factors such as water, soil, and organisms, destroys the ecosystem, endangers people's health, and becomes an obstacle to sustainable economic development. The root cause of air pollution is that humans do not carry out effective waste gas treatment in their production activities.

[0003] Packed towers play a crucial role in waste gas treatment. Widely used in a variety of tail gas treatment applications, they can handle waste gases including dust, oil, and inorganic pollutants. They are widely used in waste gas treatment for solid waste, electronics industries such as PCBs, CCLs, and TFT-LCDs, chemical materials, metal pickling and electroplating, rubber deodorization, and various kilns.

[0004] Packed towers are filled with packing of appropriate height to increase the contact surface area between the two fluids, thereby improving mass transfer efficiency. As exhaust gas passes through the packed tower, the liquid enters through the distributor at the top and descends along the surface of the packing, while the gas flows upward from the bottom through the pores of the packing, closely contacting and interacting with the liquid. This countercurrent contact ensures that harmful substances in the exhaust gas fully come into contact with the liquid, thereby achieving the purpose of pollutant removal.

[0005] Traditional packed towers consist of a packed tower body and a liquid collection tank. Inside the packed tower body are installed a demister, spray layer, packing layer, and grid layer. The packed tower body is also equipped with a feed inlet, a discharge port, and a manhole. This traditional packed tower has the following problems:

[0006] 1. The spray layer is sprayed inside the tower. If there is a problem with the spray layer during operation, the machine must be shut down immediately, the reaction liquid in the tower must be drained, and clean water must be added to repeatedly rinse the packed tower. After rinsing, all manholes must be opened and fans must be placed in the manholes for strong exhaust to prevent personnel from entering and causing secondary poisoning. After ventilation and exhaust, a springboard must be laid inside the tower. Personnel must wear protective clothing and gas masks before entering the tower for repairs and replacements. Maintenance is difficult and time-consuming.

[0007] 2. The grid layer is an ordinary mesh plate, which can only support the packing layer and does not have the dust removal and gas-liquid neutralization functions. The dust removal and purification of the packed tower is completely dependent on the packing layer, which shortens the service life of the packing layer. Utility Model Content

[0008] The technical problem to be solved by the utility model is to provide a novel high-efficiency packed tower device which can improve the dust removal and purification efficiency of the packed tower and reduce the maintenance difficulty of the spray layer.

[0009] In order to solve the above problems, the present invention adopts the following technical solutions:

[0010] A new type of high-efficiency packed tower device, including a packed tower body and a liquid collecting tank, is provided with a demister, a spray layer, a packing layer and a grid layer from top to bottom on the packed tower body, and an exhaust port and an air inlet are provided on the upper and lower parts of the packed tower body respectively; its special features are:

[0011] The spray layer includes a spray ring tube sleeved outside the packing tower body, a liquid inlet is provided on the outer edge of the spray ring tube and is connected to the liquid outlet of the submersible pump inserted in the liquid collecting tank through an upper liquid pipe, a plurality of connection ports are evenly distributed along the circumferential direction on the inner edge of the spray ring tube, and mounting ports are evenly distributed along the circumferential direction on the outer edge of the packing tower body, a flange nozzle is connected to each mounting port through a flange seal, the nozzle at the inner end of the flange nozzle is inserted into the packing tower body through the mounting port, and the outer end of the flange nozzle is connected to the corresponding connection port through a flexible joint;

[0012] The grid layer includes an upper snap plate, a wave plate grid and a lower snap plate. The wave plate grid is composed of several pieces of different lengths and is evenly clamped together through multiple upper snap plates and lower snap plates. The cross section of each wave plate grid is V-shaped and the raised parts of two adjacent wave plate grids overlap each other.

[0013] As a further preference, the demister is a wire mesh demister.

[0014] As a further preference, the spray layer, filler layer and grid layer are repeatedly arranged in two groups from top to bottom to further improve the purification efficiency.

[0015] As a further preference, there are two submersible pumps, which are respectively connected to the spray ring pipes of the two groups of spray layers through upper liquid pipes, and a regulating valve is provided on each upper liquid pipe.

[0016] As a further preference, the flange nozzle includes a connecting flange, a nozzle pipe and a connecting pipe that are interconnected are fixedly connected on both sides of the connecting flange, and the nozzle is connected to one end of the nozzle pipe.

[0017] As a further preference, the packing layer is a polyhedral hollow ball packing or a ball ring packing.

[0018] As a further preference, a convex edge with an opening facing downward is provided on the outer side of the raised portion of each wave plate grille to improve the dust removal effect.

[0019] As a further preference, transparent observation windows are provided on the packed tower body below the spray ring pipe to facilitate observation of the working conditions of the flange nozzle.

[0020] As a further preference, the spray ring pipe and the upper liquid pipe are both PPH pipes.

[0021] The beneficial effects of the utility model are:

[0022] 1. Since the spray layer includes a spray ring tube that is sleeved on the outside of the packed tower body, the inner edge of the spray ring tube is connected to the flange nozzle through multiple connection ports evenly distributed around the circumference. The nozzles at the inner end of the flange nozzle are respectively inserted into the installation ports evenly distributed on the outer edge of the packed tower body and are sealed with the installation ports through the flange. Therefore, when a problem occurs in the spray layer, after observing and confirming the problem nozzle through the observation window, the corresponding regulating valve is closed, and the joint at the outer end of the flange nozzle is directly disassembled to remove and replace the spare flange nozzle. The overall maintenance time does not exceed 20 minutes, which greatly reduces maintenance costs and maintenance time; the problem nozzle can be replaced without stopping the machine, which not only avoids the risks of maintenance personnel entering the narrow space inside the tower to operate, secondary poisoning, and falling from height; it also avoids problems such as production stoppage due to packed tower maintenance, greatly reducing the company's losses caused by packed tower maintenance.

[0023] 2. Since the grid layer uses a plurality of corrugated grids of different lengths that are evenly distributed and clamped together through multiple upper and lower snap plates, the cross-section of each corrugated grid is V-shaped and the raised portions of two adjacent corrugated grids overlap each other. Therefore, the grid layer not only has the load-bearing function of supporting the packing layer, but also allows water droplets flowing down in the packing layer to flow downward along the corrugated grid to form a water film, so that the flue gas flows upward and fully contacts the water film to complete the first gas-liquid neutralization reaction, so that the acid gas in the flue gas is converted into clean gas, thereby improving the purification treatment efficiency of the device.

[0024] 3. Through the optimized grid layer structure, the dust-laden flue gas collides with the corrugated grid and mixes with the reaction liquid sprayed through the spray layer to form large dust-laden droplets. The large droplets are separated from the corrugated grid surface because the gravity exceeds the combined force of the gas lift and the liquid surface tension, thus achieving gas-liquid separation and flowing back into the bottom of the tower, thereby improving the dust removal and purification efficiency of the packed tower; the dust-removed flue gas continues to rise through the packing layer and enters the spray layer to continue the reaction. The qualified exhaust gas after the reaction is discharged after dehydration through the demister. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the present utility model.

[0026] Figure 2 yes Figure 1 Right view of .

[0027] Figure 3 yes Figure 1 Top view after removing the upper liquid pipe.

[0028] Figure 4 It is a structural schematic diagram of the grid layer of the utility model.

[0029] Figure 5 yes Figure 4 Top view of .

[0030] Figure 6 It is a structural diagram of the flange nozzle.

[0031] In the figure: packed tower body 1, air inlet 101, exhaust port 102, emptying port 103, installation port 104, demister 2, spray layer 3, regulating valve 4, packing layer 5, observation window 6, upper liquid pipe 7, grid layer 8, submersible pump 9, liquid collecting box 10, spray ring pipe 11, flange nozzle 12, dosing port 13, liquid replenishing port 14, and flexible joint 15. DETAILED DESCRIPTION

[0032] like Figures 1-6 As shown, the utility model relates to a new type of high-efficiency packed tower device, including a packed tower body 1 and a liquid collecting box 10. On the packed tower body 1, a demister 2, a spray layer 3, a packing layer 5 and a grid layer 8 are sequentially arranged from top to bottom. The demister 2 is a wire mesh demister, and the packing layer 5 is a polyhedral hollow ball packing or a ball ring packing. The spray layer 3, the packing layer 5 and the grid layer 8 are repeatedly arranged in two groups from top to bottom and arranged at intervals to further improve the purification efficiency. An exhaust port 102 and an air inlet 101 are respectively provided at the upper end and the lower part of the outer edge of the packed tower body 1. An emptying port 103 is provided on one side of the lower part of the outer edge of the packed tower body 1 for regularly discharging part of the reaction liquid in the packed tower body 1.

[0033] The liquid collecting box 10 is arranged on one side of the lower end of the outer edge of the packed tower body 1, and the lower end is connected to the bottom of the packed tower body 1. Two submersible pumps 9 are installed inside the liquid collecting box 10, and a dosing port 13 and a liquid replenishing port 14 are provided on the liquid collecting box 10.

[0034] The spray layer 3 includes a spray ring tube 11 sleeved outside the packed tower body 1. A liquid inlet is provided on the outer edge of the spray ring tube 11 and communicates with the corresponding liquid outlet of the submersible pump 9 via the upper liquid pipe 7. Multiple connection ports are evenly distributed along the circumference of the inner edge of the spray ring tube 11. Multiple mounting ports 104 are evenly distributed along the circumference of the outer edge of the packed tower body 1 at positions corresponding to the spray ring tube 11. Each mounting port 104 is sealed with a flange nozzle 12 via a flange and bolts. The nozzle at the inner end of the flange nozzle 12 is inserted into the packed tower body 1 through the mounting port 104. The outer end of the flange nozzle 12 is sealed with the corresponding connection port via a union 15. A manual regulating valve 4 is installed on each upper liquid pipe 7. Both the spray ring tube 11 and the upper liquid pipe 7 are PPH pipes.

[0035] The flange nozzle 12 includes a connecting flange 122 , with a nozzle pipe 123 and a connecting pipe 124 connected to each other fixedly connected on both sides of the connecting flange 122 , and the nozzle 121 is installed at one end of the nozzle pipe 123 .

[0036] The grid layer 8 comprises an upper snap plate 801, a wave plate 802, and a lower snap plate 803. The wave plate 802 is composed of several pieces of varying lengths, evenly spaced and fastened together by a plurality of upper and lower snap plates. Each wave plate has a V-shaped cross-section, and the raised portions of adjacent wave plates overlap. A downward-facing lip 804 is provided on the outer side of the raised portion of each wave plate 802 to enhance dust removal.

[0037] Transparent observation windows 6 are provided on the packed tower body 1 below the spray ring pipe 11 to facilitate observation of the working conditions of the flange nozzle 12 .

[0038] During operation, the submersible pump 9 is started to pump the reaction liquid in the liquid collecting tank 10 into the spray ring pipe 11, and then sprayed out in the packed tower body 1 through the upper and lower sets of flange nozzles 12, and flows through the packing layer 5 to the corrugated grid of the grid layer 8 to form a water curtain. The dust-laden flue gas enters the packed tower body 1 through the air inlet, passes through the water curtain formed by the grid layer 8 and the gaps in the packing layer 5, and comes into close contact with the reaction liquid. The dust-laden flue gas collides with the corrugated grid and the packing layer 5 to form large dust droplets. The large droplets are separated from the surface of the corrugated grid because the gravity exceeds the combined force of the gas lift and the liquid surface tension, thereby realizing gas-liquid separation and flowing back into the bottom of the tower. After the reaction liquid enters the bottom of the packed tower body 1, it flows into the liquid collecting tank 10 to continue to be recycled.

[0039] The flue gas after dust removal conducts mass and heat transfer in gas-liquid two-phase on the surface of the packing layer 5. The flue gas passing through the packing layer 5 continues to rise and enters the spray layer 3 to continue the reaction. The exhaust gas that meets the standards after the reaction passes through the wire mesh demister 2 to remove water and then meets the standards for discharge.

[0040] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with this field, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A new type of high-efficiency packed tower device, comprising a packed tower body and a liquid collecting box, on which a demister, a spray layer, a packing layer and a grid layer are arranged from top to bottom, and an exhaust port and an air inlet are respectively arranged on the upper and lower parts of the packed tower body; the characteristics are: The spray layer comprises a spray ring tube sleeved outside the packing tower body, a liquid inlet is arranged on the outer edge of the spray ring tube and is connected with the liquid outlet of the submersible pump inserted in the liquid collecting box through an upper liquid pipe, a plurality of connection ports are evenly distributed along the circumferential direction on the inner edge of the spray ring tube, installation ports are evenly distributed along the circumferential direction on the outer edge of the packing tower body, a flange nozzle is connected to each installation port through a flange seal, a nozzle at the inner end of the flange nozzle is inserted into the packing tower body through the installation port, and the outer end of the flange nozzle is connected to the corresponding connection port through a flexible joint; The grid layer includes an upper snap plate, a wave plate grid and a lower snap plate. The wave plate grid is a plurality of pieces of different lengths and is evenly clamped together through a plurality of upper snap plates and lower snap plates. The cross section of each wave plate grid is V-shaped and the raised parts of two adjacent wave plate grids overlap each other.

2. A novel high-efficiency packed tower device according to claim 1, characterized in that: The demister is a wire mesh demister.

3. A novel high-efficiency packed tower device according to claim 1, characterized in that: The spray layer, the filler layer and the grid layer are repeatedly arranged in two groups from top to bottom to further improve the purification efficiency.

4. A novel high-efficiency packed tower device according to claim 3, characterized in that: There are two submersible pumps, which are respectively connected with the spray ring pipes of the two groups of spray layers through upper liquid pipes, and a regulating valve is respectively arranged on each upper liquid pipe.

5. A novel high-efficiency packed tower device according to claim 1, characterized in that: The flange nozzle comprises a connecting flange, on both sides of which a nozzle pipe and a connecting pipe that are interconnected are fixedly connected, and the nozzle is connected to one end of the nozzle pipe.

6. A novel high-efficiency packed tower device according to claim 1 or 3, characterized in that: The packing layer is a multi-faceted hollow ball packing or a ball ring packing.

7. A novel high-efficiency packed tower device according to claim 1, characterized in that: A convex edge with an opening facing downward is respectively arranged on the outer side of the convex portion of each wave plate grille to improve the dust removal effect.

8. A novel high-efficiency packed tower device according to claim 3, characterized in that: Transparent observation windows are provided on the packing tower body below the spray ring pipe to facilitate observation of the working condition of the flange nozzle.

9. A novel high-efficiency packed tower device according to claim 1 or 4, characterized in that: The spray ring pipe and the upper liquid pipe are both PPH pipes.

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