Ammonium phosphate tail gas emission reduction device

Abstract

The utility model relates to the technical field of ammonium phosphate tail gas treatment, and discloses an ammonium phosphate tail gas emission reduction device which comprises a washing tower body, a gas inlet pipe opening is fixedly formed in the bottom of the washing tower body, a washing liquid conveying pipe is fixedly arranged in the washing tower body, and a plurality of duckbilled nozzles are arranged on the washing liquid conveying pipe in an array mode. The flow guide assembly is rotationally arranged in the washing tower body and comprises a flow guide plate, a cyclone cylinder, a cyclone fan and a vortex fan, the dredging assembly is movably arranged on the washing liquid conveying pipe and comprises a rotating joint, a spiral flow guide blade and a filter cylinder, and high-pressure washing liquid replaces energy consumption output of compressed air; the spiral flow guide plate and the washing liquid conveying pipe are matched to prolong the contact time of washing liquid and tail gas so as to achieve full gas-liquid contact, the tail gas penetrates through the cyclone fan and the vortex fan to form rotational flows with different inner and outer calibers, the rotational flow tail gas adsorbs ammonia through the activated carbon fiber adsorption rod, and finally the ultra-low emission standard is completed.

Description

Technical Field

[0001] This utility model belongs to the field of phosphorus ammonium tail gas treatment technology, specifically, it relates to a phosphorus ammonium tail gas emission reduction device. Background Technology

[0002] Phosphate ammonium tail gas emission reduction device is used to treat harmful substances such as fluorine-containing gases, ammonia, dust and sulfur dioxide (SO2) generated during the production of phosphate ammonium; its core objective is to purify the tail gas through physical or chemical methods to meet environmental emission standards.

[0003] The prior art discloses a scrubbing tower (CN221950905U) for washing tail gas using ammonium phosphate slurry. The tower includes a main body with a scrubbing liquid ring pipe and a compressed air ring pipe fixedly installed near the bottom. A scrubbing liquid passage pipe is fixedly connected between the two sides of the top wall of the scrubbing liquid ring pipe. Multiple sets of duckbill-shaped nozzles are fixedly installed on the side wall of the scrubbing liquid passage pipe, with the front ends of the nozzles being flat and fan-shaped. A compressed air passage pipe is fixedly connected between the two sides of the bottom outer wall of the compressed air ring pipe. A scrubbing liquid atomizing mechanism is provided above and below each set of duckbill-shaped nozzles on the scrubbing liquid passage pipe. A bendable vent pipe is fixedly connected between the ends of the compressed air passage pipe and the scrubbing liquid passage pipe. This scrubbing tower, with its compressed air duct and duckbill-shaped nozzles, achieves good scrubbing results, effectively prevents the ammonium phosphate slurry from clogging the nozzles, improves the scrubbing effect, and prevents shutdown problems caused by tail gas scrubbing.

[0004] Research revealed that the duckbill-shaped nozzles used in existing technologies require the use of compressed air, which results in high energy consumption. Additionally, other components in the air can easily mix with the ammonium phosphate slurry to produce new substances, thus affecting the treatment effect of the exhaust gas. Furthermore, the existing technology uses a single spray structure, which makes it difficult to achieve sufficient gas-liquid contact, resulting in high levels of residual dust and harmful gases (such as ammonia and P2O5) in the exhaust gas, making it difficult to meet ultra-low emission standards.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A phosphorus ammonium tail gas emission reduction device, comprising

[0008] The washing tower body has an air inlet fixedly installed at its bottom and a washing liquid delivery pipe fixedly installed inside the washing tower body. Multiple duckbill-shaped nozzles are arranged in an array on the washing liquid delivery pipe.

[0009] A flow guiding assembly is rotatably disposed within the body of the washing tower. The flow guiding assembly includes a flow guiding plate, a cyclone tube, a cyclone fan, and a vortex fan. The vortex fan is fixedly disposed within the cyclone fan. The cyclone fan is rotatably disposed within the body of the washing tower via the vortex fan. The cyclone tube is fixedly disposed on the cyclone fan. The flow guiding plate is fixedly disposed on the inner wall surface of the washing tower body.

[0010] A unclogging assembly is movably mounted on a detergent delivery pipe. The unclogging assembly includes a rotary joint, spiral guide vanes, and a filter cartridge. The detergent delivery pipe is connected to a duckbill-shaped nozzle via the rotary joint. The filter cartridge is snapped onto the detergent delivery pipe, and the spiral guide vanes are rotatably mounted inside the filter cartridge.

[0011] In a preferred embodiment of this utility model, both the guide plate and the washing liquid conveying pipe are spiral structures. The guide plate and the washing liquid conveying pipe are staggered and arranged on the inner wall of the washing tower body. A filter shell is fixedly installed at the bottom of the washing tower body, and the guide plate and the washing liquid conveying pipe are both located directly above the filter shell.

[0012] In a preferred embodiment of this utility model, a central shaft is fixedly provided inside the filter shell, the cyclone fan is composed of multiple inclined blades and a ring, the vortex fan is composed of multiple spiral blades and a cylinder, the vortex fan is fixedly provided inside the ring, and the vortex fan is rotatably connected to the central shaft through the cylinder.

[0013] In a preferred embodiment of this utility model, the cyclone tube is fixedly connected to the top surface of the cyclone fan, and an activated carbon fiber adsorption rod is inserted and clamped into the center of the cyclone tube.

[0014] In a preferred embodiment of this utility model, the washing liquid conveying pipe has multiple liquid outlet cylinders arranged in a spiral array on the curved surface of the side away from the inner wall of the washing tower body. The liquid outlet cylinders are connected to the duckbill-shaped nozzles through a rotary joint, and the duckbill-shaped nozzles are rotatably connected to the liquid outlet cylinders through the rotary joint.

[0015] In a preferred embodiment of this utility model, the liquid outlet cylinder is provided with symmetrical slots on the side away from the washing liquid delivery pipe, and protrusions are symmetrically fixed on the curved surface of one end of the filter cylinder, the protrusions engaging with the slots.

[0016] In a preferred embodiment of this utility model, a fixed shaft is fixedly provided at the center of the filter cartridge, and the spiral guide vanes are rotatably connected to the fixed shaft through bearings. The spiral guide vanes are rotatably connected to the filter cartridge through the fixed shaft.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. By setting up a flow guiding component, the spiral flow guiding plate and the washing liquid delivery pipe are used to extend the contact time between the washing liquid and the exhaust gas, thereby achieving full gas-liquid contact. The exhaust gas passes through the cyclone fan and the vortex fan to form a swirling flow with different inner and outer diameters. The swirling exhaust gas is adsorbed by activated carbon fiber adsorption rods to adsorb ammonia, and finally achieves the ultra-low emission standard.

[0019] 2. By setting up a dredging component, high-pressure washing liquid replaces the energy output of compressed air. Under the force of high-pressure fluid, the spiral guide vanes rotate to guide and dredge the washing liquid, preventing ammonium phosphate slurry from entering the duckbill-shaped nozzle and causing blockage. At the same time, the rotary joint under high pressure works with the duckbill-shaped nozzle to rotate and spray, further promoting gas-liquid mixing and improving the treatment effect of exhaust gas.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] In the attached diagram:

[0022] Figure 1 This is a disassembled schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the overall half-section structure of this utility model;

[0024] Figure 3 This is a disassembly diagram of the flow guiding component of this utility model;

[0025] Figure 4 This utility model Figure 2 Enlarged view of point A in the middle;

[0026] Figure 5 This is a disassembly diagram of the unblocking component of this utility model.

[0027] In the diagram: 10. Scrubber body; 11. Air inlet; 12. Baffle plate; 13. Filter shell; 14. Scrubber liquid delivery pipe; 15. Cyclone fan; 16. Activated carbon fiber adsorption rod; 17. Duckbill nozzle; 18. Cyclone fan; 19. Vortex fan; 20. Central shaft; 21. Rotary joint; 22. Spiral guide vane; 23. Fixed shaft; 24. Liquid outlet cylinder; 25. Filter cartridge. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0029] A phosphorus ammonium tail gas emission reduction device, such as Figure 1 , Figure 2 , Figure 3, Figure 4 and Figure 5 As shown, including

[0030] The washing tower body 10 has an air inlet 11 fixedly installed at the bottom and a washing liquid delivery pipe 14 fixedly installed inside the washing tower body 10. Multiple duckbill-shaped nozzles 17 are arranged in an array on the washing liquid delivery pipe 14.

[0031] The flow guiding assembly is rotatably disposed within the washing tower body 10. The flow guiding assembly includes a flow guiding plate 12, a cyclone 15, a cyclone fan 18, and a vortex fan 19. The vortex fan 19 is fixedly disposed within the cyclone fan 18. The cyclone fan 18 is rotatably disposed within the washing tower body 10 via the vortex fan 19. The cyclone 15 is fixedly disposed on the cyclone fan 18. The flow guiding plate 12 is fixedly disposed on the inner wall surface of the washing tower body 10.

[0032] The unblocking component is movably mounted on the washing liquid delivery pipe 14. The unblocking component includes a rotary joint 21, a spiral guide vane 22, and a filter cartridge 25. The washing liquid delivery pipe 14 is connected to the duckbill nozzle 17 through the rotary joint 21. The filter cartridge 25 is snapped onto the washing liquid delivery pipe 14. The spiral guide vane 22 is rotatably mounted inside the filter cartridge 25.

[0033] Specifically, the ammonium phosphate exhaust gas enters through the inlet 11, forms a swirling flow through the guide assembly, and comes into full contact with the washing liquid (dilute phosphoric acid) sprayed from the rotating duckbill-shaped nozzle 17, further promoting gas-liquid mixing and improving the treatment effect of the exhaust gas. During this process, the spiral guide plate 12 in the guide assembly works with the washing liquid delivery pipe 14 to extend the contact time between the washing liquid and the exhaust gas, thereby achieving full gas-liquid contact. The exhaust gas passes through the cyclone fan 18 and the vortex fan 19 to form swirling flows with different inner and outer diameters. The swirling exhaust gas adsorbs ammonia through the activated carbon fiber adsorption rod, ultimately achieving the ultra-low emission standard. At the same time, the washing liquid delivery pipe 14 is connected to a high-pressure delivery pump, so that the washing liquid delivered inside is in a high-pressure state. Thus, the impact force of the high-pressure water flow drives the spiral guide blades 22 to rotate and guide and unblock the washing liquid. At the same time, the rotating spiral guide blades 22 prevent the ammonium phosphate slurry from entering the duckbill-shaped nozzle 17 and causing blockage.

[0034] like Figure 1 and Figure 2 As shown, both the guide plate 12 and the washing liquid conveying pipe 14 are spiral structures. The guide plate 12 and the washing liquid conveying pipe 14 are staggered on the inner wall of the washing tower body 10. A filter shell 13 is fixedly installed at the bottom of the washing tower body 10. The guide plate 12 and the washing liquid conveying pipe 14 are both located directly above the filter shell 13.

[0035] like Figure 1 and Figure 3As shown, a central shaft 20 is fixedly installed in the center of the air filter housing 13. The cyclone fan 18 consists of multiple inclined blades and a ring. The vortex fan 19 consists of multiple spiral blades and a cylinder. The vortex fan 19 is fixedly installed in the ring. The vortex fan 19 is rotatably connected to the central shaft 20 through the cylinder.

[0036] like Figure 1 and Figure 3 As shown, the cyclone 15 is fixedly connected to the top surface of the cyclone fan 18, and the center of the cyclone 15 is filled with an activated carbon fiber adsorption rod 16.

[0037] The working principle is as follows: the phosphate exhaust gas rises through the inlet 11 and passes through the filter shell 13 to filter some impurities, and then enters the scrubbing tower body 10. As the exhaust gas rises, it passes through the inclined blades of the cyclone fan 18, which drives the cyclone fan 18 to rotate. At this time, the exhaust gas passing through the cyclone fan 18 forms a vortex. The rotating cyclone fan 18 also drives the cyclone tube 15 and the vortex fan 19 to rotate. The blades in the vortex fan 19 are not aligned with the blades in the cyclone fan 18. The exhaust gas passing through the rotating vortex fan 19 forms a vortex. At this time, the exhaust gas forms a vortex with different inner and outer diameters. The vortex exhaust gas is guided by the guide plate 12 and flows through the cyclone tube 15. Ammonia is adsorbed by the activated carbon fiber adsorption rod 16, and finally the ultra-low emission standard is achieved.

[0038] like Figure 2 , Figure 4 and Figure 5 As shown, multiple liquid outlet cylinders 24 are arranged in a spiral array on the curved surface of the washing liquid delivery pipe 14 away from the inner wall of the washing tower body 10. The liquid outlet cylinders 24 are connected to the duckbill-shaped nozzles 17 through a rotary joint 21. The duckbill-shaped nozzles 17 are rotatably connected to the liquid outlet cylinders 24 through the rotary joint 21.

[0039] like Figure 4 and Figure 5 As shown, the liquid outlet cylinder 24 has symmetrically opened slots on the side away from the washing liquid delivery pipe 14, and symmetrically fixed protrusions on the curved surface of one end of the filter cylinder 25, the protrusions engaging with the slots.

[0040] like Figure 5 As shown, a fixed shaft 23 is fixedly installed at the center of the filter cartridge 25, and the spiral guide vane 22 is rotatably connected to the fixed shaft 23 through a bearing. The spiral guide vane 22 is rotatably connected to the filter cartridge 25 through the fixed shaft 23.

[0041] The working principle is as follows: a high-pressure pump is connected to the inlet end of the washing liquid delivery pipe 14. The high-pressure pump delivers the washing liquid to the washing liquid delivery pipe 14 in a high-pressure form, and then delivers it to the filter cartridge 25 through the outlet pipe 24. This makes the washing liquid inside the cartridge 25 under high pressure. With the impact force of the high-pressure water flow, the spiral guide vanes 22 inside the filter cartridge 25 are rotated. The rotating spiral guide vanes 22 guide and unblock the washing liquid, so that the washing liquid is sprayed out by the duckbill-shaped nozzle 17 in a swirling form. At the same time, the high-pressure washing liquid causes the duckbill-shaped nozzle 17 to be driven. The duckbill-shaped nozzle 17 rotates around the outlet cylinder 24 through the rotating joint 21. At this time, the duckbill-shaped nozzle 17 sprays the exhaust gas in the washing tower body 10 in a rotating manner. Since multiple duckbill-shaped nozzles are arranged in a spiral curve on the washing liquid delivery pipe 14, it not only increases the gas-liquid contact area and promotes further gas-liquid mixing, but also improves the exhaust gas treatment effect to a certain extent.

[0042] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A phosphonamidite tail gas abatement device, characterized by, include The washing tower body (10) has an air inlet (11) fixedly installed at the bottom of the washing tower body (10), and a washing liquid conveying pipe (14) fixedly installed inside the washing tower body (10). Multiple duckbill-shaped nozzles (17) are arranged in an array on the washing liquid conveying pipe (14). A flow guiding assembly is rotatably disposed inside the washing tower body (10). The flow guiding assembly includes a flow guiding plate (12), a cyclone cylinder (15), a cyclone fan (18), and a vortex fan (19). The vortex fan (19) is fixedly disposed inside the cyclone fan (18). The cyclone fan (18) is rotatably disposed inside the washing tower body (10) through the vortex fan (19). The cyclone cylinder (15) is fixedly disposed on the cyclone fan (18). The flow guiding plate (12) is fixedly disposed on the inner wall surface of the washing tower body (10). The unblocking assembly is movably mounted on the detergent delivery pipe (14). The unblocking assembly includes a rotary joint (21), a spiral guide vane (22), and a filter cartridge (25). The detergent delivery pipe (14) is connected to the duckbill nozzle (17) through the rotary joint (21). The filter cartridge (25) is snapped onto the detergent delivery pipe (14). The spiral guide vane (22) is rotatably mounted inside the filter cartridge (25).

2. The phosphorus ammonium tail gas emission reduction device according to claim 1, characterized in that, The guide plate (12) and the washing liquid conveying pipe (14) are both spiral structures. The guide plate (12) and the washing liquid conveying pipe (14) are staggered on the inner wall of the washing tower body (10). A filter shell (13) is fixedly installed at the bottom of the washing tower body (10). The guide plate (12) and the washing liquid conveying pipe (14) are both located directly above the filter shell (13).

3. The phosphorus ammonium tail gas abatement device according to claim 2, characterized in that The filter housing (13) has a central shaft (20) fixedly installed at its internal center. The cyclone fan (18) consists of multiple inclined blades and a ring. The vortex fan (19) consists of multiple spiral blades and a cylinder. The vortex fan (19) is fixedly installed inside the ring. The vortex fan (19) is rotatably connected to the central shaft (20) through the cylinder.

4. The phosphorus ammonium tail gas abatement device according to claim 3, characterized in that The cyclone tube (15) is fixedly connected to the top surface of the cyclone fan (18), and the center of the cyclone tube (15) is filled with an activated carbon fiber adsorption rod (16).

5. The phosphorus ammonium tail gas abatement device according to claim 4, characterized in that The washing liquid delivery pipe (14) has a spiral array of multiple liquid outlet cylinders (24) on the curved surface away from the inner wall of the washing tower body (10). The liquid outlet cylinders (24) are connected to the duckbill-shaped nozzles (17) through a rotary joint (21). The duckbill-shaped nozzles (17) are rotatably connected to the liquid outlet cylinders (24) through the rotary joint (21).

6. The phosphorus ammonium tail gas abatement device according to claim 5, characterized in that The liquid outlet cylinder (24) has symmetrically opened slots on the side away from the washing liquid delivery pipe (14), and symmetrically fixed protrusions on the curved surface of one end of the filter cylinder (25) engage with the slots.

7. The phosphorus ammonium tail gas abatement device according to claim 6, characterized in that The filter cartridge (25) is fixedly provided with a fixed shaft (23) at its center. The spiral guide vane (22) is rotatably connected to the fixed shaft (23) through a bearing. The spiral guide vane (22) is rotatably connected to the filter cartridge (25) through the fixed shaft (23).

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