Spraying device for flue gas desulfurization

Abstract

The spraying device comprises a main pipe body, a gas inlet and a gas inlet pipe are arranged on one side of the bottom of the main pipe body, and a gas outlet and a gas outlet pipe are arranged on the top of the main pipe body. The side wall of the main pipe body is provided with a first pipeline and first spray heads in a circumferential array, the main pipe body is internally provided with a second pipeline and second spray heads rotating at the top, and a plurality of second spray grooves are distributed in the second spray heads in a circumferential array. During working, desulfurization liquid is sprayed out from the first and second nozzles for desulfurization. A turbofan driven by heat of the sulfur-containing flue gas is further arranged in the device, a rotating shaft of the turbofan is fixed to the top of the second spray head and drives the second spray head to rotate to achieve rotary spraying of the desulfurization liquid, and the desulfurization effect is enhanced. A gas collecting hopper, a fixing rod and a bearing are arranged in the main pipe body; a lifting lug is arranged at the top of the main pipe body; a mounting seat and a drain pipe are arranged at the bottom; an observation hole and a cover plate are arranged on the side wall; according to the device, the double nozzles cooperate and the turbofan drives rotary spraying, the desulfurization efficiency and quality are improved, energy is saved, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying equipment, in particular to a spraying device for flue gas desulfurization. Background Technique

[0002] The spraying device for flue gas desulfurization is a device used to treat flue gas containing sulfur oxides to reduce sulfur emissions and environmental pollution. In industrial production processes such as thermal power plants and chemical plants, a large amount of sulfur-containing waste gas is generated. By using this spraying device to desulfurize the waste gas, the pollution of the waste gas to the atmospheric environment can be effectively reduced, meeting environmental protection requirements.

[0003] In the prior art, a spraying device for flue gas desulfurization with the publication number of "CN221471407U" includes a housing. Spraying components are arranged at both the upper and lower ends inside the housing. A smoke inlet is opened at the lower end of one side surface of the housing, and a drain outlet is opened on the lower surface of the housing. By providing the spraying components, this spraying device for flue gas desulfurization is beneficial for gathering the flue gas together during use and evenly spraying the flue gas to be desulfurized. And through the setting of secondary spraying, the desulfurization efficiency of the flue gas is increased. The flue gas enters the bottom end of the housing through the smoke inlet and rises. After being gathered by the conical cover, at this time, the purification liquid is transported to the circular pipe through the connecting pipe and sprayed obliquely through the atomizing nozzles to form a water curtain for desulfurizing the passing flue gas. The flue gas passes through the primary spraying and passes through the filter screen into the middle section of the housing, and then is sprayed again by the spraying component at the upper end of the housing, and then the flue gas is discharged through the smoke outlet.

[0004] However, there are still relatively large deficiencies in the prior art, such as:

[0005] Although the flue gas desulfurization pipeline in the prior art has achieved certain results and played an important role in reducing the sulfide content in flue gas and protecting the environment. However, in actual applications, there are still some deficiencies, such as insufficient spraying of the desulfurization liquid, resulting in problems such as the desulfurization effect needing to be improved. These problems limit the efficiency and effect of the flue gas desulfurization pipeline in actual industrial applications. Content of the Utility Model

[0006] The purpose of the utility model is to provide a spraying device for flue gas desulfurization to solve the problems put forward in the above background technique.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A spray device for flue gas desulfurization, comprising a main pipe body. An air inlet is opened on one side of the bottom of the main pipe body, and an air inlet pipe is fixedly arranged at the position of the air inlet. An exhaust port is fixedly arranged at the top of the main pipe body, and an exhaust pipe is fixedly arranged at the position of the exhaust port. A first pipe is fixedly arranged on the side wall of the main pipe body, and a plurality of first spray heads are fixedly communicated with the first pipe through a connecting pipe. A plurality of the first spray heads penetrate through the main pipe body and extend into the interior of the main pipe body, and the first spray heads are arranged on the side wall of the main pipe body in a circumferential array;

[0009] A second pipe is fixedly arranged inside the main pipe body. A second spray head is rotatably arranged at the top of the second pipe. A plurality of second spray grooves are opened on the second spray head, and the second spray grooves are arranged on the side wall of the second spray head in a circumferential array. When the device is working, desulfurization liquid is injected into the first pipe and the second pipe, and is sprayed out from the first spray head and the second spray head, jointly desulfurizing the gas flowing through the main pipe body.

[0010] Preferably, a vortex fan is rotatably arranged inside the main pipe body. A rotating shaft is fixedly arranged on the vortex fan, and the rotating shaft is fixedly connected to the top of the second spray head. When the rotating shaft rotates, it will drive the second spray head to rotate. The rotation of the second spray head drives the desulfurization liquid in the second spray groove to rotate and spray out.

[0011] Preferably, a gas collecting hopper is fixedly arranged in the main pipe body. A plurality of fixing rods are fixedly arranged on the side wall of the gas collecting hopper. A bearing is fixedly arranged between the plurality of fixing rods, and the rotating shaft is fixedly arranged in the bearing. The vortex fan is arranged above the gas collecting hopper.

[0012] Preferably, an exhaust hopper is fixedly arranged at the position of the exhaust port of the main pipe body, and the exhaust pipe is fixedly arranged on the exhaust hopper.

[0013] Preferably, a lifting ear is fixedly arranged at the top of the main pipe body.

[0014] Preferably, a plurality of mounting seats are fixedly arranged at the bottom of the main pipe body.

[0015] Preferably, a plurality of mounting seats are fixedly arranged at the bottom of the main pipe body.

[0016] Preferably, a drain pipe is fixedly communicated with the bottom side wall of the main pipe body.

[0017] Preferably, a plurality of observation holes are opened on the side wall of the main pipe body, and covers are arranged at the positions of the observation holes.

[0018] Compared with the prior art, the beneficial effects of the present utility model are:

[0019] 1. The device is provided with a first spray head and a second spray head, which work together to increase the contact area and contact opportunities between the desulfurization liquid and the sulfur-containing flue gas, thereby improving the desulfurization effect and efficiency. In particular, the rotary spraying of the second spray head enables the desulfurization liquid to mix more comprehensively and evenly with the sulfur-containing gas, greatly enhancing the sufficiency of desulfurization and significantly improving the desulfurization quality.

[0020] 2. The ingenious design of the fan uses the heat of the sulfur-containing flue gas to drive the rotation of the second spray head, eliminating the need for an additional power source, achieving effective utilization of energy and reducing the operating cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a three-dimensional structural schematic diagram of the overall device of the present utility model;

[0022] Figure 2 is a three-dimensional sectional structural schematic diagram of the overall device of the present utility model;

[0023] Figure 3 is a front sectional view of the overall device of the present utility model;

[0024] Figure 4 is a three-dimensional structural schematic diagram of the fan of the present utility model.

[0025] In the figure: 1, main pipe body; 2, air inlet; 3, intake pipe; 4, exhaust port; 5, exhaust pipe; 6, first pipe; 7, first spray head; 8, second pipe; 9, second spray head; 10, second spray trough; 11, fan; 12, rotating shaft; 13, air collecting hopper; 14, fixing rod; 15, bearing; 16, exhaust hopper; 17, lifting ear; 18, mounting seat; 19, drain pipe; 20, observation hole; 21, cover plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0028] The spray device for flue gas desulfurization mainly consists of the main pipe body 1. The main pipe body 1 is usually made of high-quality stainless steel, such as 316L stainless steel, because it has excellent corrosion resistance and strength, and can operate stably for a long time in a harsh desulfurization environment. On one side of the bottom of the main pipe body 1, an air inlet 2 is opened through precise machining technology, and then an inlet pipe 3 is firmly fixed at the position of the air inlet 2 by welding technology. The inlet pipe 3 can be made of fiberglass with good corrosion resistance to resist the erosion of sulfur-containing flue gas.

[0029] At the same time, an exhaust port 4 is provided at the top of the main pipe body 1, and an exhaust pipe 5 is also fixedly provided at the position of the exhaust port 4 by welding. The exhaust pipe 5 can also be made of 316L stainless steel to ensure smooth exhaust and the durability of the equipment.

[0030] On the side wall of the main pipe body 1, a first pipe 6 is precisely fixed through high-precision drilling and installation operations. The first pipe 6 is generally made of seamless steel pipe, such as 20# seamless steel pipe, and has good pressure-bearing capacity. This first pipe 6 is stably connected to a number of first spray heads 7 through a finely processed connecting pipe. The first spray heads 7 can be made of corrosion-resistant engineering plastics, such as polytetrafluoroethylene, to extend their service life. And these first spray heads 7 penetrate the main pipe body 1 in a regular circumferential array through precise drilling and installation technology and extend into the interior of the main pipe body 1.

[0031] Inside the main pipe body 1, a second pipe 8 is fixedly provided through a rigorous installation process. The second pipe 8 can be made of seamless steel pipe of the same material as the first pipe 6. It is worth mentioning that a second spray head 9 is ingeniously rotatably provided at the top of the second pipe 8 through precise bearing 15 installation technology. The second spray head 9 can be made of corrosion-resistant alloy, such as Hastelloy. And on the second spray head 9, a number of second spray grooves 10 are evenly opened by laser cutting technology. These second spray grooves 10 are also distributed on the side wall of the second spray head 9 in a circumferential array.

[0032] When the device starts to work, the desulfurization liquid is injected into the first pipe 6 and the second pipe 8, and then powerfully sprayed out from the first spray head and the second spray head 9, working together to carry out efficient desulfurization treatment on the gas passing through the interior of the main pipe body 1.

[0033] More optimally, a vortex fan 11 is rotatably arranged inside the main pipe body 1 through a precise installation process. The vortex fan 11 is usually made of high-strength aluminum alloy material to reduce weight and ensure rotational flexibility. When gas passes through the main pipe body 1, it drives the vortex fan 11 to rotate. A rotating shaft 12 is fixedly arranged on the vortex fan 11. The rotating shaft 12 generally uses high-strength alloy steel, such as 40Cr alloy steel, and the rotating shaft 12 is tightly and fixedly connected to the top of the second spray head 9. When the rotating shaft 12 starts to rotate, it effectively drives the second spray head 9 to rotate. As the second spray head 9 rotates, the desulfurization liquid sprayed from the second spray groove 10 can achieve rotary spraying, enabling the desulfurization liquid to come into contact with the gas more fully, thereby greatly improving the desulfurization effect and efficiency.

[0034] In the main pipe body 1, a gas collecting hopper 13 is fixedly arranged through a welding process. The gas collecting hopper 13 can be made of stainless steel plate through stamping and welding. A number of fixing rods 14 are fixedly arranged on the side wall of the gas collecting hopper 13. The fixing rods 14 can be made of stainless steel. A bearing 15 is fixedly arranged between these fixing rods 14 through a high-precision installation process. The bearing 15 usually selects a ball bearing 15, and the material is high-hardness alloy steel. The rotating shaft 12 is fixedly arranged in this bearing 15 through a tight fit installation, and the vortex fan 11 is cleverly arranged above the gas collecting hopper 13.

[0035] The main pipe body 1 is located at the position of the exhaust port 4, and an exhaust hopper 16 is fixedly arranged through a precise welding process. The exhaust hopper 16 can be made of the same stainless steel material as the main pipe body 1. The exhaust pipe 5 is firmly fixed on the exhaust hopper 16 through a solid welding process.

[0036] At the top of the main pipe body 1, in order to facilitate the hoisting and installation of the device, a lifting ear 17 is fixedly arranged through a casting process. The lifting ear 17 can be made of cast steel to ensure its sufficient strength. At the bottom of the main pipe body 1, in order to ensure the stable installation of the device, a number of mounting seats 18 are also fixedly arranged through a casting process. The mounting seats 18 can be made of cast iron to provide stable support. In addition, on the side wall at the bottom of the main pipe body 1, a drain pipe 19 is fixedly connected through a precise drilling and welding process. The drain pipe 19 can be made of the same stainless steel material as the main pipe body 1 and is used to discharge the used desulfurization liquid. On the side wall of the main pipe body 1, a number of observation holes 20 are opened through a fine drilling process, and a cover plate 21 fixed by bolts is arranged at the position of the observation holes 20 to facilitate the operator to observe the internal working conditions.

[0037] In actual production and processing, the main body 1 can be integrally formed by casting using stainless steel material, and then subsequent processing and assembly are carried out. The intake pipe 3 and the exhaust pipe 5 can be made of seamless steel pipes, connected to the main body 1 by welding, and flaw detection of the welds is carried out after welding to ensure the sealing performance and strength of the connection. The first spray head 7 and the second spray head 9 can be finely processed by a numerical control machining center to ensure the spraying angle and flow uniformity of the spray heads. The fan 11 and the rotating shaft 12 can be made of high-strength alloy materials, processed by turning and grinding processes, and dynamic balance tests are carried out to ensure stability and reliability during rotation. The bearing 15 is selected as a high-quality rolling bearing 15 and installed between the fixed rods 14 by press-fitting. The air collecting hopper 13 can be formed by stamping, and then welded and surface-treated.

[0038] In short, during the processing of the entire device, it is necessary to strictly control the processing accuracy and assembly quality of each component to ensure the stability, reliability and efficient desulfurization performance of the device during operation. At the same time, according to the actual working conditions and cost budget, reasonably select the materials of each component to achieve the best cost performance and usage effect.

[0039] Working principle: During the use of the utility model, the sulfur-containing flue gas enters the bottom of the main body 1 through the intake pipe 3. At the same time, the desulfurization liquid is injected into the first pipe 6 and the second pipe 8.

[0040] From the first pipe 6, the desulfurization liquid flows through the connecting pipe to the first spray head 7, and then evenly sprays out from the first spray head 7 to carry out preliminary desulfurization treatment on the flue gas entering the main body 1.

[0041] Inside the main body 1, when the sulfur-containing flue gas flows, due to the heat carried by the sulfur-containing waste gas, it will drive the fan 11 to rotate. The rotating shaft 12 fixed on the fan 11 is tightly connected to the top of the second spray head 9, so the rotation of the fan 11 will drive the rotating shaft 12 to rotate.

[0042] Since the rotating shaft 12 is fixedly connected to the second spray head 9, the rotation of the rotating shaft 12 will effectively drive the second spray head 9 to rotate. When the second spray head 9 rotates, the desulfurization liquid rotates and sprays out from the second spray grooves 10 evenly distributed on the second spray head 9.

[0043] This rotating spraying method can make the desulfurization liquid contact the gas flowing through the main body 1 more fully, greatly enhancing the mixing effect of the desulfurization liquid and the sulfur-containing gas, thereby significantly improving the desulfurization effect and efficiency.

[0044] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A spray device for flue gas desulfurization, comprising a main pipe body (1), wherein an air inlet (2) is opened on one side of the bottom of the main pipe body (1), an air inlet pipe (3) is fixedly arranged at the position of the air inlet (2), an exhaust port (4) is fixedly arranged at the top of the main pipe body (1), and an exhaust pipe (5) is fixedly arranged at the position of the exhaust port (4), and the characteristics are as follows: A first pipeline (6) is fixedly arranged on the side wall of the main pipe body (1). The first pipeline (6) is fixedly communicated with a plurality of first spray heads (7) through a connecting pipe. A plurality of the first spray heads (7) penetrate through the main pipe body (1) and extend into the interior of the main pipe body (1). The first spray heads (7) are arranged on the side wall of the main pipe body (1) in a circumferential array manner. A second pipeline (8) is fixedly arranged inside the main pipe body (1). A second spray head (9) is rotatably arranged at the top of the second pipeline (8). A plurality of second spray grooves (10) are formed in the second spray head (9). The second spray grooves (10) are arranged on the side wall of the second spray head (9) in a circumferential array manner. When the device is working, desulfurization liquid is injected into the first pipeline (6) and the second pipeline (8), and is sprayed out from the first spray head and the second spray head (9) to jointly desulfurize the gas flowing through the main pipe body (1).

2. The spray device for flue gas desulfurization according to claim 1, wherein: A vortex fan (11) is rotatably arranged inside the main pipe body (1). A rotating shaft (12) is fixedly arranged on the vortex fan (11). The rotating shaft (12) is fixedly connected to the top of the second spray head (9). When the rotating shaft (12) rotates, it drives the second spray head (9) to rotate. The rotation of the second spray head (9) drives the desulfurization liquid in the second spray groove (10) to be sprayed out in a rotating manner.

3. The spray device for flue gas desulfurization according to claim 2, wherein: An air collecting hopper (13) is fixedly arranged in the main pipe body (1). A plurality of fixing rods (14) are fixedly arranged on the side wall of the air collecting hopper (13). A bearing (15) is fixedly arranged between the plurality of fixing rods (14). The rotating shaft (12) is fixedly arranged in the bearing (15). The vortex fan (11) is arranged above the air collecting hopper (13).

4. The spray device for flue gas desulfurization according to claim 3, wherein: An exhaust hopper (16) is fixedly arranged at the position of the exhaust port (4) of the main pipe body (1). The exhaust pipe (5) is fixedly arranged on the exhaust hopper (16).

5. The spray device for flue gas desulfurization according to claim 4, wherein: A lifting ear (17) is fixedly arranged on the top of the main pipe body (1).

6. The spray device for flue gas desulfurization according to claim 5, wherein: A plurality of mounting seats (18) are fixedly arranged at the bottom of the main pipe body (1).

7. A spray device for flue gas desulfurization according to claim 6, characterized in that: A plurality of mounting seats (18) are fixedly arranged at the bottom of the main pipe body (1).

8. A spray device for flue gas desulfurization according to claim 7, characterized in that: A drain pipe (19) is fixedly communicated with the bottom side wall of the main pipe body (1).

9. The spray device for flue gas desulfurization according to claim 8, characterized in that: A plurality of observation holes (20) are formed in the side wall of the main pipe body (1). A cover plate (21) is arranged at the position of the observation holes (20).

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