Flue gas desulfurization circulating ash intermediate bin and flue gas desulfurization device

Abstract

The utility model discloses a flue gas desulfurization circulating ash intermediate bin and a flue gas desulfurization device, and relates to the technical field of flue gas desulfurization, the flue gas desulfurization circulating ash intermediate bin comprises a bin main body, a spiral conveying mechanism and a discharge pipe, the bin main body comprises a first bin body and a second bin body which are communicated with each other, the first bin body is arranged above the second bin body, and the spiral conveying mechanism is arranged above the first bin body. A feeding hole is formed in the top end of the first bin body; the spiral conveying mechanism comprises a first conveying mechanism and a second conveying mechanism, the first conveying mechanism and the second conveying mechanism are arranged corresponding to the feeding port, the first conveying mechanism transversely penetrates through the side wall of the second bin body and is used for outputting materials falling into the second bin body, and the second conveying mechanism transversely penetrates through the side wall of the first bin body and is used for outputting materials falling into the second bin body. The first bin body is used for outputting materials falling into the first bin body. The discharging pipe is connected to the bottom of the second bin body, and a gate valve is arranged on the discharging pipe to control the size of an opening in the discharging pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas desulfurization, in particular to a flue gas desulfurization circulating ash intermediate bin and a flue gas desulfurization device. Background Art

[0002] Dry desulfurization technology is a commonly used flue gas treatment and desulfurization process. It removes sulfide-containing gases from flue gas through the use of powdered or granular absorbents, adsorbents, or catalysts to achieve flue gas desulfurization. To improve desulfurizer utilization and desulfurization efficiency, the recycled ash and other products produced after the desulfurization reaction are often transported to the desulfurization tower for reuse. The recycling device, as a key component, has a crucial impact on the efficiency of desulfurizer reuse.

[0003] During actual operation, when the output of the circulating material is large and the material in the intermediate bin cannot be discharged in time, the material is likely to accumulate in the intermediate bin and cause compaction. In severe cases, the screw conveyor may be blocked and stop rotating, causing the circulating return device to be blocked during operation, resulting in transportation abnormalities. Utility Model Content

[0004] The main purpose of the utility model is to provide a flue gas desulfurization circulating ash intermediate bin and a flue gas desulfurization device, aiming to solve the problem that a large amount of material is difficult to be discharged from the intermediate bin in time, resulting in abnormal transportation.

[0005] To achieve the above-mentioned purpose, the utility model proposes a flue gas desulfurization circulating ash intermediate bin, comprising:

[0006] A bin body, the bin body comprising a first bin body and a second bin body that are interconnected, the first bin body being disposed above the second bin body, and a feed port being disposed at the top of the first bin body;

[0007] A screw conveying mechanism, the screw conveying mechanism comprising a first conveying mechanism and a second conveying mechanism, the first conveying mechanism and the second conveying mechanism being arranged corresponding to the feed inlet, the first conveying mechanism transversely penetrating the side wall of the second silo body to output the material falling into the second silo body, and the second conveying mechanism transversely penetrating the side wall of the first silo body to output the material falling into the first silo body; and

[0008] A discharge pipe is connected to the bottom of the second bin body, and a plug valve is provided on the discharge pipe to control the size of the opening in the discharge pipe.

[0009] In one embodiment, an observation hole is provided on the top wall of the first bin body, and the observation hole is spaced apart from the feed port.

[0010] In one embodiment, an observation tube is provided on the top of the first bin body, the observation tube is communicated with the inner cavity of the first bin body and is spaced apart from the feed port, an observation hole is formed in the observation tube and a covering member is provided to movably cover the observation hole.

[0011] In one embodiment, the first conveying mechanism is a double-screw conveyor, and the second conveying mechanism is a single-screw conveyor.

[0012] In one embodiment, the flue gas desulfurization circulating ash intermediate bin further includes a mounting portion, and the mounting portions include at least two, and the mounting portions are symmetrically arranged along the circumference of the first bin body.

[0013] In one embodiment, the cross-sectional shape of the mounting portion is a right triangle, one right-angled end face of the mounting portion is used to connect to the first bin body, and the other right-angled end face is used to install the flue gas desulfurization circulating ash intermediate bin.

[0014] In one embodiment, the flue gas desulfurization circulating ash intermediate bin further includes a vibration motor, and the vibration motor is arranged on the side wall of the first bin body.

[0015] In one embodiment, the flue gas desulfurization circulating ash intermediate bin is also provided with a buffer, which is connected to the inner wall of the first bin body. The buffer is arranged corresponding to the feed port and is located between the first conveying mechanism and the second conveying mechanism and / or between the second conveying mechanism and the feed port.

[0016] In one embodiment, the buffer member is one of a buffer plate and a buffer rod.

[0017] The utility model further proposes a flue gas desulfurization device, which includes a flue gas desulfurization circulating ash intermediate bin, and the flue gas desulfurization circulating ash intermediate bin includes:

[0018] A bin body, the bin body comprising a first bin body and a second bin body that are interconnected, the first bin body being disposed above the second bin body, and a feed port being disposed at the top of the first bin body;

[0019] A screw conveying mechanism, the screw conveying mechanism comprising a first conveying mechanism and a second conveying mechanism, the first conveying mechanism and the second conveying mechanism being arranged corresponding to the feed inlet, the first conveying mechanism transversely penetrating the side wall of the second silo body to output the material falling into the second silo body, and the second conveying mechanism transversely penetrating the side wall of the first silo body to output the material falling into the first silo body; and

[0020] A discharge pipe is connected to the bottom of the second bin body, and a plug valve is provided on the discharge pipe to control the size of the opening in the discharge pipe.

[0021] The technical solution of the present utility model proposes an intermediate bin for circulating ash of flue gas desulfurization. The upper and lower layout of the first bin body and the second bin body helps to use gravity to realize the natural falling of materials in the intermediate bin, reducing the power demand for material transportation. The feed port is located at the top of the first bin body to facilitate the entry of materials. The design of the first conveying mechanism and the second conveying mechanism allows the materials to be effectively separated and conveyed between the two bin bodies. The first conveying mechanism below can be used to convey the materials back to the desulfurization tower for recycling, and the second conveying mechanism above can discharge part of the materials in the intermediate bin in time to reduce the burden in the intermediate bin. In addition, by arranging a discharge pipe and a plug valve at the bottom of the second bin body, it is also convenient to discharge the materials in the intermediate bin to avoid the occurrence of hardening caused by excessive accumulation of materials in the bin. This is conducive to ensuring the stability and continuity of the material circulation and transportation process, and is also convenient for maintenance and operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0023] Figure 1 A front view of an embodiment of a flue gas desulfurization circulating ash intermediate bin provided by the utility model;

[0024] Figure 2 for Figure 1 Side view of the intermediate silo for circulating ash in the flue gas desulfurization system;

[0025] Figure 3 for Figure 1 Top view of the intermediate silo for circulating ash in the flue gas desulfurization system.

[0026] Description of Figure Numbers:

[0027] 1000. Flue gas desulfurization circulating ash intermediate silo; 1. Silo body; 11. First silo body; 111. Feed inlet; 12. Second silo body; 2. Screw conveying mechanism; 21. First conveying mechanism; 22. Second conveying mechanism; 3. Discharge pipe; 31. Gate valve; 4. Observation tube; 41. Cover; 5. Installation part.

[0028] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] Dry desulfurization technology is a commonly used flue gas treatment and desulfurization process. It removes sulfide-containing gases from flue gas through the use of powdered or granular absorbents, adsorbents, or catalysts to achieve flue gas desulfurization. To improve desulfurizer utilization and desulfurization efficiency, the recycled ash and other products produced after the desulfurization reaction are often transported to the desulfurization tower for reuse. The recycling device, as a key component, has a crucial impact on the efficiency of desulfurizer reuse.

[0033] During actual operation, when the output of the circulating material is large and the material in the intermediate bin cannot be discharged in time, the material is likely to accumulate in the intermediate bin and cause compaction. In severe cases, the screw conveyor may be blocked and stop rotating, causing the circulating return device to be blocked during operation, resulting in transportation abnormalities.

[0034] In order to solve the above problems, this solution proposes a flue gas desulfurization circulating ash intermediate bin 1000, including a bin body 1, a spiral conveying mechanism 2 and a discharge pipe 3. The bin body 1 includes a first bin body 11 and a second bin body 12 that are interconnected. The first bin body 11 is arranged above the second bin body 12, and a feed port 111 is provided at the top of the first bin body 11; the spiral conveying mechanism 2 includes a first conveying mechanism 21 and a second conveying mechanism 22. The first conveying mechanism 21 and the second conveying mechanism 22 are arranged corresponding to the feed port 111. The first conveying mechanism 21 horizontally penetrates the side wall of the second bin body 12 to discharge the material falling into the second bin body 12, and the second conveying mechanism 22 horizontally penetrates the side wall of the first bin body 11 to discharge the material falling into the first bin body 11; and the discharge pipe 3 is connected to the bottom of the second bin body 12, and a plug valve 31 is provided on the discharge pipe 3 to control the size of the opening in the discharge pipe 3.

[0035] The technical solution of the present utility model proposes a flue gas desulfurization circulating ash intermediate bin 1000. The upper and lower layout of the first bin body 11 and the second bin body 12 helps to use gravity to realize the natural fall of materials in the intermediate bin, reducing the power demand for material transportation. The feed port 111 is located at the top of the first bin body 11 to facilitate the entry of materials. The design of the first conveying mechanism 21 and the second conveying mechanism 22 allows the materials to be effectively separated and transported between the two bins. The first conveying mechanism 21 below can be used to transport the materials back to the desulfurization tower for recycling, and the second conveying mechanism 22 above can discharge part of the materials in the intermediate bin in time to reduce the burden in the intermediate bin. In addition, by arranging the discharge pipe 3 and the plug valve 31 at the bottom of the second bin body 12, it is also convenient to discharge the materials in the intermediate bin to avoid the occurrence of excessive accumulation of materials in the bin and the formation of compaction. This is conducive to ensuring the stability and continuity of the material circulation and transportation process, and is also convenient for maintenance and operation.

[0036] In an optional embodiment, in order to facilitate the operator to observe the situation inside the silo body 1, an observation hole is provided on the top wall of the first silo body 11, and the observation hole is spaced apart from the feed port 111. By providing an observation hole on the top wall of the first silo body 11, a window is provided for the operator to directly observe the flow of materials. The position of the observation hole is spaced apart from the feed port 111, which can prevent the material from directly impacting the observation hole during feeding, thereby protecting the observation hole from damage and ensuring the safety of the operator. Through the observation hole, the operator can monitor the flow of materials in real time, and promptly discover and deal with problems such as material blockage, which is crucial to ensuring the stable operation of the entire desulfurization system. It helps to reduce interruptions in the entire desulfurization system due to poor material flow, and ensures the desulfurization efficiency of the flue gas desulfurization device.

[0037] In another optional embodiment, an observation tube 4 is provided at the top of the first silo 11. The observation tube 4 communicates with the inner cavity of the first silo 11 and is spaced apart from the feed port 111. An observation hole is formed in the observation tube 4 and a cover 41 is provided to removably cover the observation hole. The placement of the observation tube 4 at the top of the first silo 11, along with the observation hole and cover 41, not only provides a safer observation method but also protects the observation hole from material and dust when not required, thereby extending the service life of the observation hole. The design of the observation tube 4 allows operators to observe without being directly exposed to the material flow path, improving operational safety and reducing the risk of the observation hole being clogged by material. In this embodiment, the observation tube 4 is hingedly fixed to one side of the cover 41. The cover 41 can be flipped up and down relative to the observation tube 4 to open and close. This allows the observation tube 4 to be opened when necessary to observe the conditions within the silo, preventing dust and material from escaping through the observation tube 4. This ensures a clean environment around the flue gas desulfurization circulating ash intermediate bin 1000. In actual design, the observation tube 4 and the cover 41 can also be coupled by snapping or screwing. For example, a portion of the cover 41 can be snapped into the observation tube 4, allowing the cover 41 to be removed when observation is required. Alternatively, internal threads can be provided on the observation tube 4, and corresponding internal threads on the cover 41, allowing the cover 41 to be screwed into the observation tube 4 for a detachable connection. The specific method can be selected based on actual needs.

[0038] In an optional embodiment, in order to facilitate the circulation and discharge of materials. The first conveying mechanism 21 is a double-screw conveyor, and the second conveying mechanism 22 is a single-screw conveyor. In this solution, the material in the second silo 12 is to be transported to the desulfurization tower for recycling, so the demand for materials is relatively large. The double-screw conveyor has stronger mixing and conveying capabilities, which is suitable for processing large amounts of materials or materials that need to be mixed, so a double-screw conveyor is used to improve the material conveying capacity; and the second conveying mechanism 22 provided in the first silo 11 is to discharge part of the material from the first silo 11 when there is too much material. The single-screw conveyor has a simple structure and is easy to maintain, which is suitable for processing small amounts of materials or materials that do not require mixing. Therefore, the use of a single-screw mechanism can also meet its use requirements. In this way, the efficiency of material transportation and the flexibility of the system can be improved by reasonably setting the first conveying mechanism 21 and the second conveying mechanism 22.

[0039] In an optional embodiment, to facilitate the installation of the bin body 1, the flue gas desulfurization circulating ash intermediate bin 1000 further includes a mounting portion 5, which includes at least two mounting portions 5, each of which is symmetrically arranged along the circumference of the first bin body 11. By arranging the mounting portions 5 on both sides of the first bin body 11 to facilitate the lap connection of the bin body 1 on the mounting frame for installation and fixation, this design provides a stable support structure, ensuring the stability and structural strength of the bin body 1. The symmetrically arranged mounting portions 5 help to evenly distribute the weight and pressure of the bin body, preventing structural deformation or damage caused by improper installation, thereby extending the service life of the bin body.

[0040] Furthermore, the cross-sectional shape of the mounting portion 5 is a right-angled triangle, with one right-angled end face of the mounting portion 5 being used to connect to the first bin body 11, and the other right-angled end face being used to install the flue gas desulfurization circulating ash intermediate bin 1000. This shape of the mounting portion 5 provides a stable connection point, while the design of the right-angled end face allows the mounting portion 5 to fit tightly against the first bin body 11, thereby improving the stability of the installation. The right-angled triangle cross-sectional shape also helps to improve the bending resistance of the mounting portion 5, ensuring the stability of the intermediate bin during operation. In addition, the right-angled triangle mounting portion 5 is more compact in structure and occupies less space, which helps to reduce the volume of the entire intermediate bin, thereby saving space.

[0041] In an optional embodiment, to reduce material adhesion to the side walls of the silo body 1, the flue gas desulfurization circulating ash intermediate silo 1000 also includes a vibration motor, located on the side wall of the first silo body 11. The use of a vibration motor can also reduce material adhesion to the silo walls, thereby reducing material waste and reducing cleaning and maintenance workload. Furthermore, the vibration motor can provide auxiliary power when material flow is blocked, helping the material pass smoothly through the silo. This design helps to resolve the problem of material blockage within the silo and improves the continuity and stability of material flow.

[0042] In an optional embodiment, in order to reduce the impact of the material on the spiral conveying mechanism 2 when it falls, the flue gas desulfurization circulating ash intermediate bin 1000 is also provided with a buffer, which is connected to the inner wall of the first bin body 11. The buffer is set corresponding to the feed port 111 and is located between the first conveying mechanism 21 and the second conveying mechanism 22 and / or between the second conveying mechanism 22 and the feed port 111. In the actual design process, the buffer can reduce the impact force when the material enters the bin body 1 and protect the spiral conveying mechanism 2 from damage. Optionally, the buffer can be set between the feed port 111 and the second conveying mechanism 22 above, or between the first conveying mechanism 21 and the second conveying mechanism 22, or at both locations. The specific selection can be made according to actual needs. This helps to balance the flow of materials, reduce the impact of materials on the bin body 1 and the material conveying mechanism, and thus extend the service life of the flue gas desulfurization circulating ash intermediate bin 1000.

[0043] Furthermore, the buffer is either a buffer plate or a buffer rod. In this solution, the buffer can be either a buffer plate or a buffer rod. Buffer plates are typically used to disperse the impact force of materials and are suitable for situations with high material flow or strong impact forces. Buffer rods, on the other hand, provide a certain degree of elasticity to absorb impact force and are suitable for situations with low material flow or where flexible handling is required. This design provides different buffering methods, allowing the appropriate buffer to be selected based on the material's properties and flow characteristics, thereby improving the system's adaptability and reliability.

[0044] The present invention also proposes a flue gas desulfurization device, which includes a flue gas desulfurization circulating ash intermediate bin 1000. The specific structure of the flue gas desulfurization circulating ash intermediate bin 1000 refers to the above embodiment. Since the flue gas desulfurization device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0045] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A flue gas desulfurization circulating ash intermediate bin, characterized in that: include: A bin body, the bin body comprising a first bin body and a second bin body that are interconnected, the first bin body being disposed above the second bin body, and a feed port being disposed at the top of the first bin body; A screw conveying mechanism, the screw conveying mechanism includes a first conveying mechanism and a second conveying mechanism, the first conveying mechanism and the second conveying mechanism are arranged corresponding to the feed inlet, the first conveying mechanism transversely penetrates the side wall of the second silo body to output the material falling into the second silo body, and the second conveying mechanism transversely penetrates the side wall of the first silo body to output the material falling into the first silo body; as well as A discharge pipe is connected to the bottom of the second bin body, and a plug valve is provided on the discharge pipe to control the size of the opening in the discharge pipe.

2. The flue gas desulfurization circulating ash intermediate bin according to claim 1, characterized in that: An observation hole is provided on the top wall of the first bin body, and the observation hole is spaced apart from the feed port.

3. The flue gas desulfurization circulating ash intermediate bin according to claim 1, characterized in that: An observation tube is provided on the top of the first bin body. The observation tube is communicated with the inner cavity of the first bin body and is spaced apart from the feed port. An observation hole is formed in the observation tube and a covering member is provided to movably cover the observation hole.

4. The flue gas desulfurization circulating ash intermediate bin according to claim 1, characterized in that: The first conveying mechanism is a double-screw conveyor, and the second conveying mechanism is a single-screw conveyor.

5. The flue gas desulfurization circulating ash intermediate bin according to any one of claims 1 to 4, characterized in that: The flue gas desulfurization circulating ash intermediate bin further includes a mounting portion, which includes at least two mounting portions, and each of the mounting portions is symmetrically arranged along the circumference of the first bin body.

6. The flue gas desulfurization circulating ash intermediate bin according to claim 5, characterized in that: The cross-sectional shape of the mounting portion is a right-angled triangle, a right-angled end face of the mounting portion is used for connecting to the first bin body, and the other right-angled end face is used for mounting the flue gas desulfurization circulating ash intermediate bin.

7. The flue gas desulfurization circulating ash intermediate bin according to claim 6, characterized in that: The flue gas desulfurization circulating ash intermediate bin further includes a vibration motor, which is arranged on the side wall of the first bin body.

8. The flue gas desulfurization circulating ash intermediate bin according to claim 7, characterized in that: The flue gas desulfurization circulating ash intermediate bin is also provided with a buffer, which is connected to the inner wall of the first bin body. The buffer is arranged corresponding to the feed port and is located between the first conveying mechanism and the second conveying mechanism and / or between the second conveying mechanism and the feed port.

9. The flue gas desulfurization circulating ash intermediate bin according to claim 8, characterized in that: The buffer member is one of a buffer plate and a buffer rod.

10. A flue gas desulfurization device, characterized in that: It comprises the flue gas desulfurization circulating ash intermediate bin as claimed in any one of claims 1 to 9.

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