Device for recovering nitric acid from nitric oxide in tail gas
By designing a nitric acid recovery device for exhaust gas, the combination of multiple equipment is used to solve the problem of nitrogen oxide emissions in exhaust gas, and it is converted into available nitric acid, reducing environmental pollution and production costs.
Patent Information
- Application Number
- CN202421892174.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-08-06
AI Technical Summary
The emission of nitrogen oxides in the exhaust gas causes serious pollution to the atmospheric environment, and it is difficult for the prior art to effectively treat and utilize these nitrogen oxides.
A nitric acid device for recycling exhaust nitrogen oxides is designed, including exhaust gas buffer tanks, nitric acid recovery tanks, vacuum water absorption tanks, water washing towers, alkaline washing towers, circulation pumps, jet pumps and fans. Through the combined use of these equipment, the emission of nitrogen oxides in the exhaust gas is significantly reduced and converted into available nitric acid.
It effectively reduces the emission of nitrogen oxides in the exhaust gas, reduces the adverse impact on the environment, and converts nitrogen oxides into available nitric acid, reducing production costs.
Smart Images
Figure CN222918418U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of tail gas nitrogen oxide recovery, and particularly relates to a tail gas nitrogen oxide recovery nitric acid device. Background Technique
[0002] After nitrogen oxide gas is absorbed by desalted water in the absorption tower, the residual nitrogen oxides in the tail gas are mainly nitric acid, nitrous acid and nitrogen oxide gas. The emission of nitrogen oxides will cause serious pollution to the atmospheric environment.
[0003] Nitrogen oxides combine with water in the air and will ultimately be converted into nitric acid and nitrates. Nitric acid is one of the causes of acid rain. It can produce photochemical smog pollution with other pollutants under certain conditions. With the increasingly strict environmental protection requirements, the treatment and emission of nitrogen oxides in tail gas have always been the difficulties and pain points of enterprises. Summary of the Utility Model
[0004] The purpose of the utility model is to provide a tail gas nitrogen oxide recovery nitric acid device. By adding equipment such as a tail gas buffer tank, a nitric acid recovery tank, a vacuum water absorption tank, a water washing tower, an alkali washing tower, a circulation pump, a jet pump, and a fan, the emission of nitrogen oxides in the tail gas can be significantly reduced, the adverse impact on the environment can be effectively reduced, and the nitrogen oxides in the tail gas can be absorbed and converted into utilizable nitric acid, reducing production costs, and solving the problems that the treatment and emission of nitrogen oxides in tail gas have always been the difficulties and pain points of enterprises.
[0005] To solve the above technical problems, the utility model is realized through the following technical solutions:
[0006] The utility model is a tail gas nitrogen oxide recovery nitric acid device, including a tail gas buffer tank. A nitric acid recovery tank is arranged on the right side of the tail gas buffer tank. A vacuum water absorption tank is arranged on the right side of the nitric acid recovery tank. A circulation pump is arranged on the right side of the vacuum water absorption tank. A water washing tower is arranged on the right side of the circulation pump. A jet pump is arranged above the water washing tower. An alkali washing tower is arranged on the right side of the water washing tower. A fan is arranged on the right side of the alkali washing tower. By adding equipment such as a tail gas buffer tank, a nitric acid recovery tank, a vacuum water absorption tank, a water washing tower, an alkali washing tower, a circulation pump, a jet pump, and a fan, the emission of nitrogen oxides in the tail gas can be significantly reduced, the adverse impact on the environment can be effectively reduced, and the nitrogen oxides in the tail gas can be absorbed and converted into utilizable nitric acid, reducing production costs.
[0007] Furthermore, fixing blocks are fixedly connected to both the left side and the top of the circulation pump. A fixing pipe is fixedly connected to the left side of the fixing block located on the left side. A connecting pipe is inserted into the left side of the fixing pipe. The fixing pipe is used to connect with the connecting pipe to convey water flow. After the connecting pipe is installed, it will squeeze the sealing ring, thus playing a sealing role.
[0008] Further, a placement ring is fixedly connected to the inner wall of the fixed pipe. A sealing ring is sleeved inside the fixed pipe. The left side of the sealing ring contacts the right side of the connecting pipe, and the right side of the sealing ring contacts the left side of the placement ring. The placement ring is used to limit the sealing ring, facilitating the connecting pipe to squeeze the sealing ring.
[0009] Further, a push ring is arranged on the left side of the fixed pipe. A movable rod is fixedly connected to the right side of the push ring. A spring is wound around the outer side of the movable rod. The push ring is reset under the elastic action of the spring and pushes the fixed ring to the left, thereby loosening the connecting pipe and facilitating the removal of the connecting pipe, making the disassembly more convenient.
[0010] Further, a limiting ring and a fixed ring are respectively fixedly connected to the outer surface of the connecting pipe. A rotating ring is arranged on the right side of the limiting ring. The rotating ring is rotatably connected to the connecting pipe. The rotating ring drives the connecting pipe to move to the right through the fixed ring. Through the close contact between the fixed ring and the fixed pipe and the close contact between the connecting pipe and the sealing ring, the connection can be completed, making the fixation more firm and improving the sealing effect at the same time, avoiding leakage.
[0011] Further, the rotating ring is threadedly connected to the fixed pipe. The right side of the rotating ring contacts the left side of the fixed ring, and the right side of the fixed ring contacts the left side of the push ring. The fixed ring is used to contact and cooperate with the fixed pipe to fix the connecting pipe and facilitate driving the connecting pipe to move through the rotating ring.
[0012] Further, the push ring and the movable rod are respectively slidably connected to the fixed pipe. The left side of the spring is fixedly connected to the left inner wall of the fixed pipe, and the right side of the spring is fixedly connected to the outer surface of the movable rod. By arranging the movable rod, the push ring can be limited to make a linear motion.
[0013] The utility model has the following beneficial effects:
[0014] 1. By adding equipment such as a tail gas buffer tank, a nitric acid recovery tank, a vacuum water absorption tank, a water washing tower, an alkali washing tower, a circulation pump, a jet pump, and a fan, the utility model can significantly reduce the emission of nitrogen oxides in the tail gas, effectively reduce the adverse impact on the environment, and absorb and convert the nitrogen oxides in the tail gas into utilizable nitric acid, reducing production costs.
[0015] 2. By setting a rotating ring, specifically inserting the connecting pipe into the fixed pipe and rotating the rotating ring to make it threadedly connected to the fixed pipe, the rotating ring drives the connecting pipe to move to the right through the fixed ring. Through the close contact between the fixed ring and the fixed pipe and the close contact between the connecting pipe and the sealing ring, the connection can be completed, making the fixation more firm and improving the sealing effect at the same time, avoiding leakage.
[0016] Of course, it is not necessary for any product implementing the utility model to achieve all the above advantages simultaneously. Brief Description of the Drawings
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the utility model. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.
[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0019] Figure 2 It is a schematic diagram of the overall structure of the water washing tower of the utility model;
[0020] Figure 3 It is a schematic diagram of the front sectional structure of the fixed pipe of the utility model;
[0021] Figure 4 It is a schematic diagram of the overall structure of the circulation pump of the utility model;
[0022] Figure 5 It is a schematic diagram of the overall structure of the push ring of the utility model.
[0023] In the accompanying drawings, the list of components represented by each reference numeral is as follows:
[0024] 1. Tail gas buffer tank; 2. Nitric acid recovery tank; 3. Vacuum water absorption tank; 4. Circulation pump; 41. Fixed block; 42. Fixed pipe; 421. Push ring; 422. Movable rod; 423. Spring; 43. Connecting pipe; 431. Limit ring; 432. Rotating ring; 433. Fixed ring; 44. Placing ring; 45. Sealing ring; 5. Water washing tower; 51. Jet pump; 52. Alkali washing tower; 6. Fan. Detailed Embodiments
[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only some, rather than all, embodiments of the utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments of the utility model belong to the scope of protection of the utility model.
[0026] Please refer to Figures 1-5As shown in the figure, the utility model is a tail gas nitrogen oxide recovery nitric acid device, which includes a tail gas buffer tank 1. A nitric acid recovery tank 2 is arranged on the right side of the tail gas buffer tank 1. A vacuum water absorption tank 3 is arranged on the right side of the nitric acid recovery tank 2. A circulation pump 4 is arranged on the right side of the vacuum water absorption tank 3. A water washing tower 5 is arranged on the right side of the circulation pump 4. A jet pump 51 is arranged above the water washing tower 5. An alkali washing tower 52 is arranged on the right side of the water washing tower 5. A fan 6 is arranged on the right side of the alkali washing tower 52. By adding devices such as the tail gas buffer tank 1, the nitric acid recovery tank 2, the vacuum water absorption tank 3, the water washing tower 5, the alkali washing tower 52, the circulation pump 4, the jet pump 51, and the fan 6, the emission of nitrogen oxides in the tail gas can be significantly reduced, the adverse impact on the environment can be effectively reduced, and the nitrogen oxides in the tail gas can be absorbed and converted into utilizable nitric acid, reducing the production cost.
[0027] Both the left side and the top of the circulation pump 4 are fixedly connected with fixing blocks 41. A fixing pipe 42 is fixedly connected to the left side of the fixing block 41 located on the left side. A connecting pipe 43 is inserted into the left side of the fixing pipe 42.
[0028] A placing ring 44 is fixedly connected to the inner wall of the fixing pipe 42. A sealing ring 45 is sleeved inside the fixing pipe 42. The left side of the sealing ring 45 contacts the right side of the connecting pipe 43, and the right side of the sealing ring 45 contacts the left side of the placing ring 44.
[0029] A pushing ring 421 is arranged on the left side of the fixing pipe 42. A movable rod 422 is fixedly connected to the right side of the pushing ring 421. A spring 423 is wound around the outer side of the movable rod 422.
[0030] Limiting rings 431 and fixing rings 433 are respectively fixedly connected to the outer surface of the connecting pipe 43. A rotating ring 432 is arranged on the right side of the limiting ring 431. The rotating ring 432 is rotatably connected to the connecting pipe 43. By setting the rotating ring 432, specifically, the connecting pipe 43 is inserted into the fixing pipe 42, and the rotating ring 432 is rotated to be threadedly connected with the fixing pipe 42. Then, the rotating ring 432 will drive the connecting pipe 43 to move to the right through the fixing ring 433. Through the close contact between the fixing ring 433 and the fixing pipe 42 and the close contact between the connecting pipe 43 and the sealing ring 45, the connection can be completed, making the fixation more firm, and at the same time, improving the sealing effect and avoiding leakage.
[0031] The rotating ring 432 is threadedly connected to the fixing pipe 42. The right side of the rotating ring 432 contacts the left side of the fixing ring 433. The right side of the fixing ring 433 contacts the left side of the pushing ring 421.
[0032] The pushing ring 421 and the movable rod 422 are respectively slidably connected to the fixing pipe 42. The left side of the spring 423 is fixedly connected to the left inner wall of the fixing pipe 42, and the right side of the spring 423 is fixedly connected to the outer surface of the movable rod 422.
[0033] A specific application of this embodiment is:
[0034] By adding equipment such as a tail gas buffer tank, a nitric acid recovery tank, a vacuum water absorption tank, a water washing tower, an alkali washing tower, a circulation pump, a jet pump, and a fan, the emission of nitrogen oxides in the tail gas can be significantly reduced, the adverse impact on the environment can be effectively reduced, and the nitrogen oxides in the tail gas can be absorbed and converted into utilizable nitric acid, reducing production costs. When it is necessary to connect the connecting pipe 43 to the circulation pump 4, first place the sealing ring 45 into the fixed pipe 42 so that it contacts the placement ring 44, and then insert the connecting pipe 43 into the fixed pipe 42. Then the connecting pipe 43 contacts the sealing ring 45. Next, slide the rotating ring 432 to move it to the position of the fixed pipe 42, and rotate the rotating ring 432 to thread it with the fixed pipe 42. Then the rotating ring 432 will drive the connecting pipe 43 to move to the right through the fixed ring 433, so that the fixed ring 433 contacts the push ring 421 and squeezes the sealing ring 45. At the same time, when the fixed ring 433 moves, it will push the push ring 421 to the right to make it enter the fixed pipe 42. Then the movable rod 422 slides in the fixed pipe 42 and stretches the spring 423 at the same time. Through the close fit of the fixed ring 433 and the fixed pipe 42 and the close fit of the connecting pipe 43 and the sealing ring 45, the connection can be completed, making the fixation more firm, and at the same time improving the sealing effect and avoiding leakage. When it is necessary to replace the sealing ring 45, reverse-rotate the rotating ring 432 to make it leave the movable rod 422 to release the fixation of the connecting pipe 43. Then pull the rotating ring 432 to the left. At the same time, the push ring 421 is reset under the elastic action of the spring 423 and pushes the fixed ring 433 to the left, thus loosening the connecting pipe 43 and facilitating the removal of the connecting pipe 43, making the disassembly more convenient. Finally, take out the sealing ring 45 and replace it.
[0035] In the description of this specification, the description with reference to terms such as "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0036] The above-disclosed preferred embodiments of this utility model are only used to help explain this utility model. The preferred embodiments do not elaborate on all details, nor do they limit this utility model to the specific embodiments described. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments to better explain the principle and practical application of this utility model, so that those skilled in the art in the relevant technical field can well understand and utilize this utility model. This utility model is only limited by the claims and their full scope and equivalents.
Claims
1. A device for recovering nitric acid from tail gas nitrogen oxides, comprising a tail gas buffer tank (1), a nitric acid recovery tank (2) being arranged on the right side of the tail gas buffer tank (1), characterized in that: A vacuum water absorption tank (3) is arranged on the right side of the nitric acid recovery tank (2), a circulation pump (4) is arranged on the right side of the vacuum water absorption tank (3), a water washing tower (5) is arranged on the right side of the circulation pump (4), a jet pump (51) is arranged above the water washing tower (5), an alkali washing tower (52) is arranged on the right side of the water washing tower (5), and a fan (6) is arranged on the right side of the alkali washing tower (52).
2. The device for recovering nitric acid from tail gas nitrogen oxides according to claim 1, characterized in that: The circulating pump (4) is fixedly connected to a fixing block (41) on the left side and the top, the fixing block (41) on the left side is fixedly connected to a fixing pipe (42) on the left side, and a connecting pipe (43) is inserted on the left side of the fixing pipe (42).
3. A device for recovering nitric acid from tail gas nitrogen oxides according to claim 2, characterized in that: A placement ring (44) is fixedly connected to the inner wall of the fixed tube (42), a sealing ring (45) is sleeved inside the fixed tube (42), the left side of the sealing ring (45) contacts the right side of the connecting tube (43), and the right side of the sealing ring (45) contacts the left side of the placement ring (44).
4. A device for recovering nitric acid from tail gas nitrogen oxides according to claim 3, characterized in that: A push ring (421) is arranged on the left side of the fixed tube (42), a movable rod (422) is fixedly connected to the right side of the push ring (421), and a spring (423) is wound around the outer side of the movable rod (422).
5. The device for recovering nitric acid from tail gas nitrogen oxides according to claim 4, characterized in that: The outer surface of the connecting tube (43) is respectively fixedly connected to a limiting ring (431) and a fixing ring (433); a rotating ring (432) is arranged on the right side of the limiting ring (431); and the rotating ring (432) is rotatably connected to the connecting tube (43).
6. The device for recovering nitric acid from tail gas nitrogen oxides according to claim 5, characterized in that: The rotating ring (432) is threadedly connected to the fixed pipe (42), the right side of the rotating ring (432) contacts the left side of the fixed ring (433), and the right side of the fixed ring (433) contacts the left side of the push ring (421).
7. The device for recovering nitric acid from tail gas nitrogen oxides according to claim 4, characterized in that: The push ring (421) and the movable rod (422) are respectively slidably connected to the fixed tube (42), the left side of the spring (423) is fixedly connected to the left side of the inner wall of the fixed tube (42), and the right side of the spring (423) is fixedly connected to the outer surface of the movable rod (422).