Industrial ammonia waste gas circulation treatment equipment

Abstract

The utility model relates to industrial ammonia waste gas circulating treatment equipment, which relates to the technical field of environmental protection and comprises a filtering device, a reaction device and a recovery device, the filtering device comprises a filter, a filtering module and a driving device, the driving device is arranged on the filter, the output end of the driving device is connected with the filtering module, and an air inlet pipe and an air outlet pipe are arranged on the two sides of the filter respectively; the reaction device comprises a reaction tower, a spraying system and a cooling system, the reaction tower is communicated with the air outlet pipe, the spraying system is used for spraying dilute sulfuric acid into the reaction tower, and the cooling system is used for adjusting the internal temperature of the reaction tower; the recovery device comprises an absorption tower, a water spraying system and a collection box, the bottom of the absorption tower is communicated with the reaction tower through a gas guide pipe, and the top and the bottom of the collection box are communicated with the absorption tower through an ammonia water outlet pipe and a recovery pipe respectively. By means of the filtering device, the reaction device and the recovery device, efficient recovery of ammonia gas is achieved, the ammonia gas can be reused as a chemical raw material, and economic benefits are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of environmental protection, in particular to industrial ammonia waste gas circulation treatment equipment. Background Art

[0002] With the rapid development of the photovoltaic industry, ammonia, a clean chemical raw material and common byproduct, is being increasingly emitted during photovoltaic production. If discharged without proper treatment, it can pollute the atmosphere, water bodies, and soil, wasting potential resources. Currently, ammonia treatment methods generally include absorption, adsorption, chemical absorption, and biochemical methods. Adsorption utilizes porous materials, such as activated carbon or molecular sieves, to absorb and separate ammonia. It is simple to operate, has a high removal rate, and is applicable to a wide range of applications, from low to high concentrations.

[0003] However, the adsorbent needs to be replaced or regenerated regularly, which leads to saturation problems, and the regeneration process may increase energy consumption and costs. The chemical method often uses dilute sulfuric acid solution as an absorbent to react with ammonia to remove ammonia. This technology is relatively mature and has low processing costs, but it may cause secondary pollution. The biological method uses specific microbial communities to convert ammonia into harmless or low-harmful substances. It has low operating costs and can achieve natural degradation of ammonia. However, its treatment efficiency is affected by microbial activity, and there are problems such as poor operating stability and relatively slow processing speed. Therefore, it is very important to develop an efficient and easy-to-operate ammonia treatment system. Utility Model Content

[0004] The utility model provides an industrial ammonia waste gas recycling treatment device, which can improve the technical problems existing in the related art such as the traditional ammonia treatment method often having high energy consumption, limited treatment efficiency, and incomplete ammonia recovery.

[0005] The present invention provides an industrial ammonia waste gas recycling treatment device, comprising:

[0006] Filtration device, reaction device and recovery device;

[0007] The filter device includes a filter, a filter module and a drive device, wherein the drive device is arranged on the filter, the output end of the drive device is connected to the filter module, the filter module is arranged in the filter, and an air inlet pipe and an air outlet pipe are respectively arranged on both sides of the filter;

[0008] The reaction device includes a reaction tower, a spraying system and a cooling system. The reaction tower is connected to the air outlet pipe. The spraying system is used to spray dilute sulfuric acid into the reaction tower. The cooling system is used to adjust the internal temperature of the reaction tower.

[0009] The recovery device includes an absorption tower, a water spraying system and a collection box. The bottom of the absorption tower is connected to the top of the reaction tower through an air guide pipe. The water spraying system is used to spray water into the absorption tower. The top and bottom of the collection box are connected to the absorption tower through an ammonia outlet pipe and a recovery pipe respectively.

[0010] The above technical solutions in the embodiments of the present application have at least the following technical effects:

[0011] The ammonia enters the filter through the air inlet pipe and removes particulate matter and the like entrained in the exhaust gas through the filter module. The filter module is driven to rotate by a driving device, so that the exhaust gas has equal contact opportunities with the filter material in the filter module, and the filter material can be replaced together when the filter material is replaced, avoiding waste of filter material caused by uneven adsorption of the filter material; the filtered ammonia enters the reaction tower through the air outlet pipe, and then the cooling system is used to adjust the temperature of the ammonia exhaust gas entering the reaction tower, so that the ammonia in the reaction tower is difficult to flow out of the air guide pipe before it is reacted, thereby ensuring the reaction time of the ammonia exhaust gas in the reaction tower; the reacted ammonia enters the absorption tower through the air guide pipe, and is absorbed by the water sprayed by the spray system to form dilute ammonia water, and the dilute ammonia water enters the collection box through the ammonia water outlet pipe, thereby achieving a recovery effect. Some of the ammonia in the collection box that has not been absorbed enters the absorption tower again through the recovery pipe, and the same recovery operation is performed; the efficient recovery of ammonia is achieved, and it can be reused as a chemical raw material to improve economic benefits.

[0012] An industrial ammonia waste gas recycling treatment equipment provided in an embodiment of the present application can adsorb, react and recover ammonia through a filtering device, a reaction device and a recovery device, thereby achieving efficient recovery of ammonia, which can be reused as a chemical raw material to improve economic benefits.

[0013] In some embodiments, the filter module includes multiple filter screens, multiple filter plates and multiple filter material cartridges, the multiple filter plates are arranged between the multiple filter screens, the multiple filter material cartridges are arranged between the multiple filter plates, and the multiple filter plates are connected to the output end of the driving device.

[0014] In some embodiments, the air inlet pipe is provided with a pressure transmitter, the filter module is provided with multiple differential pressure gauges, and the air outlet pipe is provided with a fan. In some embodiments, the spray system includes a dilute sulfuric acid inlet, a water inlet pipe, and a spray head. The dilute sulfuric acid inlet is provided on the reaction tower and connected to the water inlet pipe. The water inlet pipe is provided inside the reaction tower, and the bottom of the water inlet pipe is connected to the spray head.

[0015] In some embodiments, an air inlet pipe and a slow flow plate are arranged from bottom to top in the reaction tower, a collection tank is opened at the bottom inner side of the reaction tower, the slow flow plate includes a slow flow body and several slow flow blocks arranged on the slow flow body, the slow flow blocks are provided with multiple through holes, and multiple aerators are provided on the air inlet pipe.

[0016] In some embodiments, the cooling system includes a temperature sensor, a coolant inlet, a coolant outlet and a refrigerator. The coolant inlet and the coolant outlet are arranged on the side walls on both sides of the reaction tower, the temperature sensor is arranged in the collection tank, and the refrigerator is connected to the coolant inlet.

[0017] In some embodiments, an ammonia detection system is installed in both the reaction tower and the absorption tower, and an insulation shell is provided on the outer wall of the reaction tower.

[0018] In some embodiments, the water spraying system includes a water tank, a water pipe, a water pump and a water spray head. The water spray head is arranged in the absorption tower and connected to the water tank through a water pipe. The water pump is arranged on the water pipe.

[0019] In some embodiments, the absorption tower is connected to an ammonia water tank through an ammonia water inlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0021] Figure 1 A schematic diagram of the three-dimensional structure of an industrial ammonia waste gas recycling treatment device provided in an embodiment of the present application;

[0022] Figure 2 This is a structural diagram of the filtration device;

[0023] Figure 3 is a cross-sectional view of the filter module;

[0024] Figure 4 is the structural diagram of the reaction device;

[0025] Figure 5 This is the structural diagram of the recovery device.

[0026] Among them, the reference numerals in the figures are:

[0027] 10. Filter device; 11. Filter; 111. Air inlet pipe; 112. Air outlet pipe; 113. Pressure transmitter; 12. Filter module; 121. Filter screen; 122. Filter plate; 123. Filter cartridge; 13. Drive unit; 14. Differential pressure gauge; 15. Fan; 20. Reactor; 21. Reactor tower; 211. Collection tank; 212. Ammonia detection system; 213. Insulation shell; 22. Spray system; 221. Dilute sulfuric acid inlet; 222. Water inlet pipe; 223. Spray head; 23. Cooling system; 23 1. Temperature sensor; 232. Coolant inlet; 233. Coolant outlet; 234. Refrigerator; 24. Air inlet pipe; 241. Aerator; 25. Slow-flow plate; 251. Slow-flow body; 252. Slow-flow block; 253. Through hole; 30. Recovery device; 31. Absorption tower; 311. Air guide pipe; 32. Water spray system; 321. Water tank; 322. Water pipe; 323. Water pump; 324. Spray head; 33. Collection box; 34. Ammonia outlet pipe; 35. Recovery pipe; 36. Ammonia inlet pipe; 37. Ammonia tank. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0029] Based on this, the technical problems existing in the related art, such as high energy consumption, limited treatment efficiency, and incomplete ammonia recovery, can be improved. The embodiments of the present application provide the following solutions.

[0030] Please also refer to Figures 1 to 5 , the embodiment of the present application provides an industrial ammonia waste gas recycling treatment device, including a filtering device 10, a reaction device 20 and a recovery device 30;

[0031] The filter device 10 includes a filter 11, a filter module 12, and a drive device 13. The drive device 13 is disposed on the filter 11. The output end of the drive device 13 is connected to the filter module 12. The filter module 12 is disposed in the filter 11. An air inlet pipe 111 and an air outlet pipe 112 are respectively disposed on both sides of the filter 11.

[0032] The reaction device 20 includes a reaction tower 21, a spraying system 22 and a cooling system 23. The reaction tower 21 is connected to the air outlet pipe 112. The spraying system 22 is used to spray dilute sulfuric acid into the reaction tower 21. The cooling system 23 is used to adjust the internal temperature of the reaction tower 21.

[0033] The recovery device 30 includes an absorption tower 31, a water spraying system 32 and a collection box 33. The bottom of the absorption tower 31 is connected to the top of the reaction tower 21 through an air guide pipe 311. The water spraying system 32 is used to spray water into the absorption tower 31. The top and bottom of the collection box 33 are connected to the absorption tower 31 through an ammonia outlet pipe 34 and a recovery pipe 35 respectively.

[0034] As can be seen from the above, ammonia enters the filter 11 through the air inlet pipe 111, and removes particulate matter and the like carried in the exhaust gas through the filter module 12. The filter module 12 is driven by the driving device 13 to rotate, so that the exhaust gas has an equal chance of contacting the filter material in the filter module 12. When the filter material is replaced, it can be replaced together, avoiding the waste of filter material caused by uneven adsorption of the filter material; the filtered ammonia enters the reaction tower 21 through the air outlet pipe 112, and then the cooling system 23 is used to adjust the temperature of the ammonia exhaust gas entering the reaction tower 21, so that the temperature of the reaction tower 21 is maintained at 100°C. The ammonia gas is difficult to flow out from the air guide pipe 311 before being reacted, which ensures the reaction time of the ammonia waste gas in the reaction tower 21; the reacted ammonia gas enters the absorption tower 31 through the air guide pipe 311 and is absorbed by the water sprayed by the spray system 22 to become dilute ammonia water, and the dilute ammonia water enters the collection box 33 through the ammonia water outlet pipe 34 to achieve the recovery effect. The part of the ammonia gas that is not absorbed in the collection box 33 enters the absorption tower 31 again through the recovery pipe 35 and undergoes the same recovery operation; the efficient recovery of ammonia gas is achieved, and it can be reused as a chemical raw material, thereby improving economic benefits.

[0035] Optionally, in some embodiments, see Figure 3 The filter module 12 includes multiple filter screens 121, multiple filter plates 122 and multiple filter material cartridges 123. The multiple filter plates 122 are arranged between the multiple filter screens 121, and the multiple filter material cartridges 123 are arranged between the multiple filter plates 122. The multiple filter plates 122 are connected to the output end of the driving device 13.

[0036] In this arrangement, one or more filter modules 12 are arranged vertically in the filter 11, and adsorption materials are added according to the components in the exhaust gas. A porous PP filter material box 123 filled with adsorption materials is placed in the filter bed. When the filter material is replaced, the entire box can be taken out and replaced and filled with new filter material.

[0037] Optionally, in some embodiments, see Figures 1 to 2 The air inlet pipe 111 is provided with a pressure transmitter 113 , the filter module 12 is provided with a plurality of differential pressure gauges 14 , and the air outlet pipe 112 is provided with a fan 15 .

[0038] With this arrangement, ammonia enters the reaction tower 21 through the air inlet pipe 111, and the pressure in the air inlet pipe 111 is increased by the pressure transmitter 113; the differential pressure gauge 14 is used to monitor the pressure loss, and when the pressure loss increases, the filter 11 or the filter material is replaced in time, thereby avoiding the problem of poor filtering effect caused by saturation of the filter material; the filtered ammonia enters the reaction tower 21 through the air outlet pipe 112, and the pressure in the air outlet pipe 112 is increased by the fan 15.

[0039] Optionally, in some embodiments, see Figures 1 to 2 The spraying system 22 includes a dilute sulfuric acid inlet 221, a water inlet pipe 222 and a spray head 223. The dilute sulfuric acid inlet 221 is arranged on the reaction tower 21 and is connected to the water inlet pipe 222. The water inlet pipe 222 is arranged in the reaction tower 21, and the bottom of the water inlet pipe 222 is connected to the spray head 223.

[0040] With this arrangement, when dilute sulfuric acid is sprayed, it enters the water inlet pipe 222 from the dilute sulfuric acid inlet 221 and is sprayed out from the spray head 223. The spray head 223 is spiral-shaped, which can evenly sprinkle the sprayed dilute sulfuric acid on the reaction tower 21, so that the dilute sulfuric acid can fully contact with the ammonia gas, thereby improving the reaction efficiency.

[0041] Optionally, in some embodiments, see Figure 4 An air inlet pipe 24 and a slow flow plate 25 are arranged from bottom to top in the reaction tower 21. A collecting tank 211 is opened at the bottom inside the reaction tower 21. The slow flow plate 25 includes a slow flow body 251 and a plurality of slow flow blocks 252 arranged on the slow flow body 251. The slow flow blocks 252 are provided with multiple through holes 253, and the air inlet pipe 24 is provided with multiple aerators 241.

[0042] With such arrangement, after ammonia enters the reaction tower 21 through the air inlet pipe 24, the induced draft fan 15 is used to increase the pressure in the air inlet, and then the gas is sprayed onto the slow flow plate through the aerator 241. Dilute sulfuric acid is sent into the reaction tower 21 from the liquid inlet pipe, and falls downward on the slow flow body 251 and the slow flow block 252. The flow rate is slow, and the ammonia is fully contacted and absorbed. The setting of the through hole 253 allows the dilute sulfuric acid to be partially retained in the through hole 253, further reducing the flow rate of the dilute sulfuric acid falling on the slow flow block 252, so that it is fully contacted with the ammonia. The collection tank 211 is used to receive the liquid after the reaction.

[0043] Optionally, in some embodiments, see Figure 4 The cooling system 23 includes a temperature sensor 231, a coolant inlet 232, a coolant outlet 233 and a refrigerator 234. The coolant inlet 232 and the coolant outlet 233 are arranged on the side walls on both sides of the reaction tower 21. The temperature sensor 231 is arranged in the collection tank 211, and the refrigerator 234 is connected to the coolant inlet 232.

[0044] With this arrangement, the liquid is cooled by the refrigerator 234 to form a coolant, which flows through the reaction tower 21 from the coolant inlet 232 and flows out from the coolant outlet 233. The coolant continuously flows in and out, ensuring that the ammonia gas and the dilute sulfuric acid solution fully react. The cooling system 23 adjusts the temperature of the coolant through the temperature sensor 231.

[0045] Optionally, in some embodiments, see Figure 5 An ammonia detection system 212 is provided in both the reaction tower 21 and the absorption tower 31 , and an insulation shell 213 is provided on the outer wall of the reaction tower 21 .

[0046] With such a configuration, the spraying system 22 in the reaction tower 21 adjusts the spraying amount of dilute sulfuric acid according to the data detected by the ammonia detection system 212. The insulation shell 213 is used to maintain the internal temperature of the reaction tower 21 and slow down the temperature change rate inside the reaction tower 21. The spraying system 22 in the absorption tower 31 starts spraying water according to the data detected by the ammonia detection system 212.

[0047] Optionally, in some embodiments, see Figure 5 The water spraying system 32 includes a water tank 321, a water pipe 322, a water pump 323 and a water spray head 324. The water spray head 324 is arranged in the absorption tower 31 and is connected to the water tank 321 through the water pipe 322. The water pump 323 is arranged on the water pipe 322.

[0048] With this arrangement, the water pump 323 is started, and the water in the water tank 321 passes through the water pipe 322 and is sprayed out from the sprinkler head 324 under the action of the water pump 323, absorbing the ammonia gas entering the absorption tower 31 and flowing into the collection box 33 through the ammonia water outlet pipe 34. Some of the unabsorbed ammonia gas enters the absorption tower 31 again through the recovery pipe 35 and is absorbed by the water therein into dilute ammonia water, and enters the collection box 33.

[0049] Optionally, in some embodiments, see Figure 5 The absorption tower 31 is connected to an ammonia water tank 37 through an ammonia water inlet pipe 36 .

[0050] With such an arrangement, ammonia water is introduced into the absorption tower 31 in advance, which is beneficial to the recovery of ammonia gas and increases the ammonia recovery rate.

[0051] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An industrial ammonia waste gas recycling treatment equipment, characterized by: It comprises a filtering device (10), a reaction device (20) and a recovery device (30); The filtering device (10) comprises a filter (11), a filtering module (12) and a driving device (13); the driving device (13) is arranged on the filter (11); an output end of the driving device (13) is connected to the filtering module (12); the filtering module (12) is arranged in the filter (11); and an air inlet pipe (111) and an air outlet pipe (112) are respectively arranged on both sides of the filter (11); The reaction device (20) comprises a reaction tower (21), a spraying system (22) and a cooling system (23), wherein the reaction tower (21) is connected to an air outlet pipe (112), the spraying system (22) is used to spray dilute sulfuric acid into the reaction tower (21), and the cooling system (23) is used to adjust the internal temperature of the reaction tower (21); The recovery device (30) comprises an absorption tower (31), a water spraying system (32) and a collection box (33). The bottom of the absorption tower (31) is connected to the top of the reaction tower (21) through an air guide pipe (311). The water spraying system (32) is used to spray water into the absorption tower (31). The top and bottom of the collection box (33) are connected to the absorption tower (31) through an ammonia outlet pipe (34) and a recovery pipe (35) respectively.

2. The industrial ammonia waste gas recycling treatment equipment according to claim 1, characterized in that: The filter module (12) comprises a plurality of filter screens (121), a plurality of filter plates (122) and a plurality of filter material cartridges (123); the plurality of filter plates (122) are arranged between the plurality of filter screens (121); the plurality of filter material cartridges (123) are arranged between the plurality of filter plates (122); and the plurality of filter plates (122) are connected to the output end of the drive device (13).

3. The industrial ammonia waste gas recycling treatment equipment according to claim 2, characterized in that: The air inlet pipe (111) is provided with a pressure transmitter (113), the filter module (12) is provided with a plurality of differential pressure gauges (14), and the air outlet pipe (112) is provided with a fan (15).

4. The industrial ammonia waste gas recycling treatment equipment according to any one of claims 1 to 3, characterized in that: The spraying system (22) comprises a dilute sulfuric acid inlet (221), a water inlet pipe (222) and a spray head (223). The dilute sulfuric acid inlet (221) is arranged on the reaction tower (21) and is connected to the water inlet pipe (222). The water inlet pipe (222) is arranged in the reaction tower (21), and the bottom of the water inlet pipe (222) is connected to the spray head (223).

5. The industrial ammonia waste gas recycling treatment equipment according to claim 4, characterized in that: An air inlet pipe (24) and a slow flow plate (25) are arranged from bottom to top in the reaction tower (21); a collecting tank (211) is provided at the bottom of the inner side of the reaction tower (21); the slow flow plate (25) comprises a slow flow main body (251) and a plurality of slow flow blocks (252) arranged on the slow flow main body (251); the slow flow blocks (252) are provided with a plurality of through holes (253); and a plurality of aerators (241) are provided on the air inlet pipe (24).

6. The industrial ammonia waste gas recycling treatment equipment according to claim 5, characterized in that: The cooling system (23) includes a temperature sensor (231), a cooling liquid inlet (232), a cooling liquid outlet (233), and a refrigerator (234). The cooling liquid inlet (232) and the cooling liquid outlet (233) are arranged on the side walls of both sides of the reaction tower (21). The temperature sensor (231) is arranged in the collecting tank (211). The refrigerator (234) is connected to the cooling liquid inlet (232).

7. The industrial ammonia waste gas recycling treatment equipment according to claim 6, characterized in that: An ammonia detection system (212) is provided in both the reaction tower (21) and the absorption tower (31), and a heat-insulating shell (213) is provided on the outer wall of the reaction tower (21).

8. The industrial ammonia waste gas recycling treatment equipment according to claim 1, characterized in that: The water spray system (32) comprises a water tank (321), a water pipe (322), a water pump (323) and a water spray head (324). The water spray head (324) is arranged in the absorption tower (31) and is connected to the water tank (321) through the water pipe (322). The water pump (323) is arranged on the water pipe (322).

9. The industrial ammonia waste gas recycling treatment equipment according to claim 1, characterized in that: The absorption tower (31) is connected to an ammonia water tank (37) via an ammonia water inlet pipe (36).

Images