Solid ammonium sulfate waste recovery device of ammonia desulfurization system
By designing a solid ammonium sulfate waste recycling device for ammonia desulfurization system, using water dissolution and screen filtration technology, the problem of mechanical impurities in unqualified ammonium sulfate products is solved, and the recycling of waste and efficient utilization of resources are achieved.
Patent Information
- Application Number
- CN202421746984.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-22
AI Technical Summary
Unqualified ammonium sulfate products produced in ammonia desulfurization system are difficult to sell due to mechanical impurities and abnormal color, resulting in equipment shutdown and waste of resources.
A solid ammonium sulfate waste recycling device for ammonia desulfurization system was designed. The recycling box body and the aeration unit were combined to dissolve unqualified solid ammonium sulfate by producing water, and filtering out mechanical impurities using two-layer screen plates. Finally, it was discharged to the pit of the ammonium sulfate area through the discharge pipeline for subsequent reactions, and obtained qualified solid ammonium sulfate products.
It effectively solves the problem of mechanical impurities in unqualified ammonium sulfate products, realizes the recycling of waste, reduces resource waste, and improves production efficiency.
Smart Images
Figure CN222983863U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the field of waste recycling, and more precisely, to a device for recycling solid ammonium sulfate waste in an ammonia-based desulfurization system. Background Art
[0002] With the maturity of the ammonia-based desulfurization technology, more and more boiler flue gases currently adopt the ammonia-based desulfurization technology. The ammonia-based desulfurization technology is based on the reaction between NH3 and SO2 in an aqueous solution. Inside the absorption section of a multi-functional flue gas desulfurization tower, ammonia absorbs SO2 in the boiler flue gas to generate an aqueous solution of intermediate products ammonium sulfite and ammonium bisulfite. The aqueous solution of the desulfurization intermediate products ammonium sulfite and ammonium bisulfite undergoes an oxidation reaction with oxidation air to obtain a dilute ammonium sulfate solution. The dilute ammonium sulfate solution is concentrated inside the concentration section of the desulfurization tower by using the heat of the high-temperature flue gas to obtain an ammonium sulfate slurry with a certain solid content. The slurry undergoes processes such as concentration by a hydrocyclone, separation by a centrifuge, drying, and packaging to obtain ammonium sulfate products.
[0003] During daily operation, due to the shutdown and maintenance of the desulfurization tower, the ammonium sulfate post-treatment system needs to be shut down for cleaning, resulting in equipment abnormalities and generating a certain amount of unqualified ammonium sulfate products. Since the unqualified ammonium sulfate products contain a large amount of mechanical impurities and have abnormal colors, they are difficult to sell, posing a great problem in disposal. Summary of the Utility Model
[0004] In view of this, the embodiments of the present disclosure provide a device for recycling solid ammonium sulfate waste in an ammonia-based desulfurization system to solve the technical defects existing in the prior art.
[0005] To achieve the above object, the present disclosure adopts the following technical solutions:
[0006] The present disclosure provides a device for recycling solid ammonium sulfate waste in an ammonia-based desulfurization system, including:
[0007] A recycling box body having a chamber, and a sieve plate is arranged in the chamber; a production water pipeline communicating with the chamber is arranged on the recycling box body, and the production water is configured to be injected into the chamber through the production water pipeline; a discharge pipeline communicating with the chamber is arranged below the recycling box body;
[0008] An aeration unit including a plurality of aeration pipes extending horizontally in the chamber, and aeration holes are arranged on the side wall of the aeration pipe; the aeration unit further includes an air inlet pipe communicating with the aeration pipe, and the air inlet pipe is configured to extend outside the recycling box body.
[0009] In one embodiment of the present disclosure, at least two sieve plates are provided, which are respectively denoted as the first sieve plate and the second sieve plate located below the first sieve plate. The first sieve plate and the second sieve plate are configured to divide the chamber of the recycling box body into a first chamber, a second chamber, and a third chamber from top to bottom.
[0010] In one embodiment of the present disclosure, the first sieve plate is provided with first sieve holes, and the second sieve plate is provided with second sieve holes; the extending direction of the first sieve holes is configured to be different from the extending direction of the second sieve holes.
[0011] In one embodiment of the present disclosure, the extending direction of the first sieve holes is configured to be perpendicular to the extending direction of the second sieve holes.
[0012] In one embodiment of the present disclosure, the first sieve holes and the second sieve holes are configured as rectangular holes, and the rectangular holes are configured to be arranged in a matrix on the first sieve plate and the second sieve plate.
[0013] In one embodiment of the present disclosure, a support frame is provided at the bottom of the chamber, and the second sieve plate is configured to be supported on the support frame.
[0014] In one embodiment of the present disclosure, the first sieve plate is configured to be fixed to the inner wall of the recycling box body by hooks.
[0015] In one embodiment of the present disclosure, the aeration pipes are configured to be arranged at intervals in the third chamber; the discharge pipe is configured to be connected to the position of the recycling box body corresponding to the third chamber.
[0016] In one embodiment of the present disclosure, the aeration pipes are configured to extend horizontally to the outside of the recycling box body and are configured to be commonly connected to a supply pipe communicated with a gas source.
[0017] In one embodiment of the present disclosure, the production water pipe is configured to be connected to the position of the recycling box body corresponding to the first chamber.
[0018] An ammonium method desulfurization system solid ammonium sulfate waste recycling device provided by the present disclosure can dissolve unqualified solid ammonium sulfate to obtain a solution containing mechanical impurities, filter out the mechanical impurities in the solution through two layers of sieve plates to obtain a dilute solution without mechanical impurities after complete dissolution, then discharge the dilute solution to the ammonium sulfate area sump through a discharge pipe, and then react through a subsequent reaction device to obtain a qualified solid ammonium sulfate product, realizing the recycling of waste.
[0019] Through the following detailed description of the exemplary embodiments of the present disclosure with reference to the accompanying drawings, other features and advantages of the present disclosure will become clear. Description of the Drawings
[0020] Figure 1 is a side view of a device for recycling solid ammonium sulfate waste in an ammonia-based desulfurization system provided by an embodiment of the present disclosure;
[0021] Figure 2 is a sectional view at position A of a device for recycling solid ammonium sulfate waste in an ammonia-based desulfurization system provided by an embodiment of the present disclosure;
[0022] Figure 3 is a top view of a first sieve plate provided by an embodiment of the present disclosure;
[0023] Figure 4 is a side view of a first sieve plate provided by an embodiment of the present disclosure;
[0024] Figure 5 is a top view of a second sieve plate provided by an embodiment of the present disclosure;
[0025] Figure 6 is a side view of a second sieve plate provided by an embodiment of the present disclosure.
[0026] The one-to-one correspondence between the names of each component in the figure and the reference numerals is as follows:
[0027] 1 - Recycling tank body; 2 - First sieve plate; 3 - Second sieve plate; 4 - Production water pipe; 5 - Discharge pipe; 6 - First chamber; 7 - Second chamber; 8 - Third chamber; 9 - Aeration pipe; 10 - First manual valve; 11 - Second manual valve; 12 - Third manual valve; 13 - Inlet pipe; 14 - Aeration holes; 15 - Support frame; 16 - First sieve holes; 17 - Second sieve holes; 18 - Suspension ring. Detailed Description of the Embodiments
[0028] Now, various exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure.
[0029] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way limits the present disclosure, its application, or its use.
[0030] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the specification.
[0031] It should be noted that: Similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.
[0032] The specific embodiments of the present disclosure will be described below with reference to the accompanying drawings.
[0033] In this article, "upper", "lower", "front", "rear", "left", "right", etc. are only used to represent the relative positional relationship between relevant parts, rather than limiting the absolute positions of these relevant parts.
[0034] In this article, "first", "second", etc. are only used for distinguishing from each other, rather than indicating importance, order, and the premise of mutual existence, etc.
[0035] In this article, "equal", "same", etc. are not strict mathematical and / or geometric restrictions, and also include the errors that can be understood by those skilled in the art and are allowed in manufacturing or using, etc.
[0036] In order to realize the recycling of waste materials, the present disclosure provides a device for recycling solid ammonium sulfate waste in an ammonia-based desulfurization system. For the convenience of understanding, the specific structure and working principle of a device for recycling solid ammonium sulfate waste in an ammonia-based desulfurization system according to the present disclosure will be described in detail below with reference to the drawings and in combination with embodiments.
[0037] In an embodiment of the present disclosure, a device for recycling solid ammonium sulfate waste in an ammonia-based desulfurization system according to the present disclosure includes: a recovery tank body 1 and an aeration unit.
[0038] As Figure 1 shown, the recovery tank body 1 has a chamber, and a sieve plate is arranged in the chamber, which enables the waste materials entering the interior of the recovery tank body 1 from the top of the recovery tank body 1 to filter out mechanical impurities in the waste materials through the sieve plate arranged in the chamber. A production water pipe 4 communicating with the chamber is arranged on the recovery tank body 1, and the production water is configured to be injected into the chamber through the production water pipe 4; a discharge pipe 5 communicating with the chamber is arranged below the recovery tank body 1; the aeration unit includes a plurality of air diffuser pipes 9 extending horizontally in the chamber. As Figure 2 shown, air holes 14 are arranged on the side wall of the air diffuser pipe 9; the aeration unit further includes an air inlet pipe 13 communicating with the air diffuser pipe 9, and the air inlet pipe 13 is configured to extend outside the recovery tank body 1.
[0039] Specifically, the first manual valve 10 is a manual valve located on the production water pipeline 4 for controlling the flow of production water. The second manual valve 11 is a manual valve located on the air inlet pipe 13 for controlling the flow of compressed air. The third manual valve 12 is a manual valve located on the discharge pipeline 5 for controlling the liquid discharge. The specific operation steps of this recovery device are as follows: Pour the unqualified solid ammonium sulfate from the top of the recovery tank body 1 into the recovery tank body 1, then close the third manual valve 12 and open the first manual valve 10, so that the production water flows from the production water pipeline 4 into the recovery tank body 1. When the water level in the chamber of the recovery tank body 1 reaches 3 / 4 of the liquid level, close the first manual valve 10 and open the second manual valve 11, so that the aeration unit starts to operate. Compressed air is respectively input into each aeration pipe 9 through the air inlet pipe 13. The compressed air enters the solution through the air holes 14 on the side wall of the aeration pipe 9 to bubble the solution. Introducing compressed air can accelerate the dissolution rate of the unqualified solid ammonium sulfate in water.
[0040] In an embodiment of the present disclosure, there are at least two sieve plates, which are respectively denoted as the first sieve plate 2 and the second sieve plate 3 located below the first sieve plate 2. The first sieve plate 2 and the second sieve plate 3 are configured to divide the chamber of the recovery tank body 1 into a first chamber 6, a second chamber 7, and a third chamber 8 from top to bottom.
[0041] Specifically, as Figure 1 shown, the first sieve plate 2 and the second sieve plate 3 divide the chamber of the recovery tank body 1 into a first chamber 6, a second chamber 7, and a third chamber 8 from top to bottom. Among them, when no production water is introduced into the recovery tank body 1, the first sieve plate 2 plays a supporting role for the unqualified solid ammonium sulfate added into the recovery tank body 1. After the third manual valve 12 is closed and the first manual valve 10 is opened, the production water flows into the interior of the recovery tank body 1 through the production water pipeline 4. When the water level inside the recovery tank body 1 is replenished to 3 / 4 of the liquid level, close the first manual valve 10. The unqualified solid ammonium sulfate gradually starts to dissolve on the surface of the first sieve plate 2, and the dissolved solution flows through the first sieve plate 2 into the second chamber 7, and then through the second sieve plate 3 into the third chamber 8. Among them, the first sieve plate 2 leaves the mechanically impurities that are insoluble in water on the first sieve plate 2, and the solid ammonium sulfate that is soluble in water can smoothly enter the second chamber 7 after dissolution. Because there are some mechanically impurities with smaller particle sizes that are not dissolved and will enter the second chamber 7 through the first sieve plate 2, a second sieve plate 3 is also provided. The second sieve plate 3 is used to further intercept the undissolved mechanically impurities. Among them, the position of the first sieve plate 2 is lower than 3 / 4 of the liquid level inside the recovery tank body 1.
[0042] As Figure 3 and Figure 5As shown, in an embodiment of the present disclosure, the first sieve plate 2 is provided with first sieve holes 16, and the second sieve plate 3 is provided with second sieve holes 17; the extending direction of the first sieve holes 16 is configured to be different from the extending direction of the second sieve holes 17.
[0043] Specifically, the first sieve plate 2 and the second sieve plate 3 are arranged in the recycling box body 1 for filtering out undissolved mechanical impurities. Among them, the first sieve plate 2 serves as a preliminary filtering layer for preliminarily filtering some undissolved mechanical impurities. However, since the particle sizes of some undissolved mechanical impurities are small, they will continue to move downward through the first sieve holes 16 of the first sieve plate 2. Therefore, a second sieve plate 3 is also provided. The second sieve holes 17 on the second sieve plate 3 have a different extending direction from the first sieve holes 16 of the first sieve plate 2, which can further intercept the undissolved mechanical impurities passing through the first sieve plate 2, thereby improving the filtering efficiency.
[0044] In an embodiment of the present disclosure, the extending direction of the first sieve holes 16 is configured to be perpendicular to the extending direction of the second sieve holes 17.
[0045] Specifically, as Figure 3 shown, the first sieve holes 16 on the first sieve plate 2 are horizontal rectangles. As Figure 5 shown, the second sieve holes 17 on the second sieve plate 3 are vertical rectangles. The extending direction of the first sieve holes 16 and the extending direction of the second sieve holes 17 are perpendicular. Such a setting can facilitate the full filtration of mechanical impurities in the solution and further reduce the content of mechanical impurities in the solution when discharged.
[0046] In an embodiment of the present disclosure, the first sieve holes 16 and the second sieve holes 17 are configured as rectangular holes, and the rectangular holes are configured to be arranged in a matrix on the first sieve plate 2 and the second sieve plate 3.
[0047] Specifically, as Figure 3 shown, the first sieve holes 16 on the first sieve plate 2 are horizontal rectangles. As Figure 5 shown, the second sieve holes 17 on the second sieve plate 3 are vertical rectangles. The rectangular holes are configured to be arranged in a matrix on the first sieve plate 2 and the second sieve plate 3. Such a setting can increase the effective filtration area, enhance the filtration ability, and also reduce the phenomenon of sieve surface blockage.
[0048] In an embodiment of the present disclosure, a support frame 15 is provided at the bottom of the inner cavity of the recycling box body 1, and the second sieve plate 3 is configured to be supported on the support frame 15.
[0049] Specifically, as Figure 6As shown, a support frame 15 is provided at the bottom of the inner chamber of the recycling bin body 1, and the second sieve plate 3 is configured to be supported on the support frame 15. The support frame 15 is provided as a frame structure with four support legs, which can increase the stability of the support frame 15 and ensure that the second sieve plate 3 can remain stable without displacement or deformation. The size of the support frame 15 exactly matches the size of the third cavity 8 inside the recycling bin body 1, ensuring the filtration efficiency after the installation of the second sieve plate 3 and reducing the probability of liquid leakage or impurity penetration caused by assembly gaps.
[0050] The second sieve plate 3 can be directly placed on the support frame 15, enabling the staff to easily remove and reinstall the second sieve plate 3 when cleaning or inspecting the sieve plate is required, without a complex disassembly process.
[0051] In an embodiment of the present disclosure, the first sieve plate 2 is configured to be fixed to the inner wall of the recycling bin body 1 by hooks.
[0052] Specifically, as Figure 4 shown, a lifting ring 18 is installed on the first sieve plate 2, and hooks are provided on the inner wall of the recycling bin body 1. The hooks provided on the inner wall of the recycling bin body 1 are to match the lifting ring 18 on the first sieve plate 2. When installing or disassembling the sieve plate, the staff only needs to hang the lifting ring 18 on the corresponding hook to achieve a quick and simple fixing or releasing action. Through the simple cooperation of the lifting ring 18 and the hook, the disassembly and reinstallation process of the first sieve plate 2 is greatly simplified, without the need for complex tool operations or extensive disassembly of other components of the recycling bin. When the first sieve plate 2 needs to be regularly cleaned to maintain the recycling efficiency, the staff can quickly remove the first sieve plate 2 for cleaning, reducing the downtime. Similarly, if the first sieve plate 2 is damaged or needs to be replaced, maintenance or replacement operations can also be carried out quickly, reducing the maintenance difficulty and time cost.
[0053] In an embodiment of the present disclosure, the aeration pipes 9 are configured to be arranged at intervals in the third cavity 8; the discharge pipe 5 is configured to be connected to the recycling bin body 1 at a position corresponding to the third cavity 8.
[0054] Specifically, as Figure 1 and Figure 2As shown, at least six aeration pipes 9 are configured to be arranged at intervals in the third chamber 8. The number and interval distance of the aeration pipes 9 can be flexibly set according to the size of the recycling box body 1 in actual applications. The purpose of arranging the aeration pipes 9 is to introduce compressed air into the recycling box body 1 to accelerate the dissolution rate of unqualified solid ammonium sulfate in the recycling box body 1. Since the third chamber 8 is located at the bottommost layer inside the recycling box body 1, arranging the aeration pipes 9 at the bottommost layer inside the recycling box body 1 can ensure that the compressed air introduced into the recycling box body 1 from the aeration pipes 9 can drive the dissolution of unqualified solid ammonium sulfate throughout the inside of the recycling box body 1, avoiding the problem that there is unqualified solid ammonium sulfate that is not fully dissolved in the solution below it due to the too high position of the aeration pipes 9. Therefore, the aeration pipes 9 should be arranged in the third chamber 8.
[0055] In an embodiment of the present disclosure, the aeration pipes 9 are configured to extend horizontally outside the recycling box body 1 and are configured to be commonly connected to an intake pipe 13 that is connected to a gas source.
[0056] Specifically, the aeration pipes 9 are configured to extend horizontally outside the recycling box body 1 and are welded to the recycling box body 1. This is to fix the position of each aeration pipe 9 and prevent vibration of the entire aeration unit due to the ventilation of the air holes 14, thereby affecting the stability of the device.
[0057] In an embodiment of the present disclosure, the production water pipe 4 is configured to be connected to the recycling box body 1 at a position corresponding to the first chamber 6.
[0058] Specifically, the production water pipe 4 is configured to be connected to the recycling box body 1 at a position corresponding to the first chamber 6. A first manual valve 10 is arranged on the production water pipe 4. When the unqualified solid ammonium sulfate is completely poured onto the first sieve plate 2, the third manual valve 12 is closed, the first manual valve 10 is opened, and production water is introduced to make the production water flow from the first chamber 6 into the recycling box body 1 to replenish the liquid level of the recycling box body 1 to 3 / 4 of the liquid level. The position of the first sieve plate 2 is lower than 3 / 4 of the liquid level of the recycling box body. The purpose is to ensure that after the liquid replenishment is completed, the unqualified solid ammonium sulfate can dissolve in the first chamber 6. The dissolved solution is filtered through the first sieve plate 2 and enters the second chamber 7 for secondary filtration. Finally, the filtered solution without mechanical impurities is discharged through the discharge pipe 5, enabling the solution to enter the subsequent reaction device for reaction, thereby obtaining a qualified solid ammonium sulfate product.
[0059] An ammonium sulfate waste recycling device for an ammonia desulfurization system provided by the present disclosure can dissolve unqualified solid ammonium sulfate to obtain a solution containing mechanical impurities, filter out the mechanical impurities in the solution through two layers of sieve plates to obtain a dilute solution without mechanical impurities after complete dissolution, then discharge the dilute solution to the ammonium sulfate area sump through the discharge pipeline 5, and then react through subsequent reaction devices to obtain qualified solid ammonium sulfate products, realizing the recycling of waste materials.
[0060] It should be noted that for the foregoing method embodiments, for the sake of simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present disclosure is not limited by the described action sequence, because according to the present disclosure, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily all essential to the present disclosure.
[0061] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.
[0062] The preferred embodiments of the present disclosure disclosed above are only used to help explain the present disclosure. The alternative embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of the present disclosure. The present disclosure selects and specifically describes these embodiments to better explain the principles and practical applications of the present disclosure, so that those skilled in the art can well understand and utilize the present disclosure. The present disclosure is only limited by the claims and their full scope and equivalents.
Claims
1. A solid ammonium sulfate waste recovery device for an ammonia desulfurization system, characterized in that: include: A recovery box body (1), the recovery box body (1) having a chamber, a sieve plate being arranged in the chamber; a production water pipeline (4) communicating with the chamber is arranged on the recovery box body (1), and production water is configured to be injected into the chamber through the production water pipeline (4); a discharge pipeline (5) communicating with the chamber is arranged below the recovery box body (1); An aeration unit, the aeration unit comprising a plurality of aeration tubes (9) extending in a horizontal direction in a chamber, aeration holes (14) being arranged on the side walls of the aeration tubes (9); the aeration unit further comprising an air inlet tube (13) connected to the aeration tube (9), the air inlet tube (13) being configured to extend outside the recovery box body (1).
2. The device according to claim 1, characterized in that At least two sieve plates are provided, which are respectively referred to as a first sieve plate (2) and a second sieve plate (3) located below the first sieve plate (2). The first sieve plate (2) and the second sieve plate (3) are constructed to separate the chamber of the recovery box body (1) from top to bottom into a first chamber (6), a second chamber (7), and a third chamber (8).
3. The device according to claim 2, characterized in that The first sieve plate (2) is provided with a first sieve hole (16), and the second sieve plate (3) is provided with a second sieve hole (17); the extension direction of the first sieve hole (16) is constructed to be different from the extension direction of the second sieve hole (17).
4. The device according to claim 3, characterized in that The extension direction of the first sieve holes (16) is configured to be perpendicular to the extension direction of the second sieve holes (17).
5. The device according to claim 3, characterized in that The first sieve holes (16) and the second sieve holes (17) are constructed as rectangular holes, and the rectangular holes are constructed to be arranged in a matrix on the first sieve plate (2) and the second sieve plate (3).
6. The device according to claim 2, characterized in that A support frame (15) is arranged at the bottom of the chamber, and the second sieve plate (3) is configured to be supported on the support frame (15).
7. The device according to claim 2, characterized in that The first sieve plate (2) is configured to be fixed on the inner wall of the recovery box body (1) via a hook.
8. The device according to claim 2, characterized in that The aeration pipes (9) are configured to be arranged at intervals in the third chamber (8); and the discharge pipe (5) is configured to be connected to a position on the recovery tank body (1) corresponding to the third chamber (8).
9. The device according to claim 8, characterized in that The aeration pipe (9) is configured to extend in a horizontal direction to the outside of the recovery tank body (1), and is configured to be connected to an air inlet pipe (13) connected to an air source.
10. The device according to claim 2, characterized in that The produced water pipeline (4) is configured to be connected to a position on the recovery tank body (1) corresponding to the first chamber (6).