Dry desulfurization treatment device with online refueling function

Abstract

The utility model belongs to the technical field of desulfurization, and particularly discloses a dry desulfurization treatment device with an online material changing function, which comprises a support frame, a desulfurization reaction chamber is fixedly mounted at the upper part of the support frame, the desulfurization reaction chamber is divided into a plurality of reaction accommodating cavities by partition plates, and a set of reaction execution units is correspondingly formed around each reaction accommodating cavity; the multiple sets of reaction execution units are mutually independent and have a complete flue gas desulfurization reaction function, and a feeding unit is arranged over the desulfurization reaction chamber and used for adding an adsorbent needed by the flue gas desulfurization reaction into any reaction containing cavity in the multiple sets of reaction execution units. According to the device disclosed by the utility model, various defects faced by traditional dry desulfurization equipment are overcome, through unique structural design, each reaction execution unit operates independently and is flexibly regulated and controlled according to working conditions, the energy consumption is reduced, particularly, shutdown agent replacement is avoided due to a unique online material replacement function, and the production interruption loss, the equipment start-stop damage and the maintenance cost are reduced.

Description

Technical Field

[0001] This utility model belongs to the field of desulfurization technology, specifically relating to a dry desulfurization treatment device with online material replacement function, which is mainly used for desulfurization treatment in high-pollution industries such as power, metallurgy, coking, and cement. Background Technology

[0002] In the process of rapid industrial development, industries such as power, metallurgy, coking, and cement inevitably generate a large amount of polluting flue gas. Among these, pollutants such as sulfur dioxide (SO2) and dust are emitted into the atmosphere with the flue gas, which has become an extremely serious environmental challenge. In order to protect the environment, various industries have set strict indicators for the SO2 concentration in flue gas emissions, and mandate precise and effective control of SO2 emissions.

[0003] Currently, desulfurization technologies mainly include two types: wet desulfurization and dry desulfurization. Wet desulfurization technology is relatively mature and has a relatively high desulfurization efficiency, but it has the following drawbacks: First, wet desulfurization systems are extremely complex, requiring a large area of ​​equipment and a large-scale supporting slurry preparation, circulation, and treatment system. This not only results in high initial construction costs but also significantly increases energy consumption during operation. Second, wet desulfurization generates a large amount of desulfurization wastewater, which is rich in harmful substances such as heavy metal ions and chloride ions. Treatment is extremely difficult and costly. Negligence or improper operation in the wastewater treatment process can easily lead to secondary pollution and further damage to the surrounding environment. Third, the flue gas treated by wet desulfurization often exhibits low temperature and high humidity. To meet the relevant standards for chimney emissions, the flue gas must be reheated, which undoubtedly further increases the operating cost burden and significantly increases the complexity of the entire equipment system, making it difficult for small and medium-sized enterprises to implement.

[0004] In comparison, dry desulfurization has advantages such as relatively simple equipment and no desulfurization wastewater generation. However, existing dry desulfurization equipment suffers from a serious problem of inconvenient refrigerant replacement during actual operation. When the desulfurizing agent gradually loses its activity during the continuous reaction process and needs to be replaced, the entire equipment operation usually has to be stopped. This shutdown process directly leads to the interruption of production activities for high-polluting industries. The production interruption will trigger a series of chain reactions, not only causing huge economic losses, but also causing irreversible damage to the equipment itself due to frequent start-up and shutdown operations, significantly shortening the expected service life of the equipment, and greatly increasing the daily maintenance costs. In addition, existing dry desulfurization equipment generally occupies a large area, and the fixed bed structure is prone to high bed resistance and high operating costs.

[0005] In conclusion, the development of a dry desulfurization treatment device with online material replacement function is of great practical significance and market demand. It can effectively solve a series of problems such as production interruption and equipment maintenance while ensuring desulfurization effect, improve the production efficiency and economic benefits of high-pollution industries, and reduce environmental protection costs.

[0006] In view of this, this utility model is hereby proposed. Utility Model Content

[0007] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a dry desulfurization treatment device with online material replacement function. It is mainly used to solve the prominent problems of existing dry desulfurization equipment in actual application, such as large footprint, high operating cost, and inability to achieve online material replacement (especially adsorbent).

[0008] The objective of this utility model is achieved through the following technical solution:

[0009] This utility model provides a dry desulfurization treatment device with online material replacement function, including a support frame connected to the foundation. A desulfurization reaction chamber with a box structure is fixedly installed on the upper part of the support frame. The desulfurization reaction chamber is divided into multiple reaction chambers by partitions. A set of reaction execution units is formed around each of the reaction chambers. The multiple sets of reaction execution units are independent of each other and have complete flue gas desulfurization reaction functions. A feeding unit is arranged directly above the desulfurization reaction chamber. The feeding unit is used to add the adsorbent required for flue gas desulfurization reaction to any one of the reaction chambers of the multiple sets of reaction execution units.

[0010] Furthermore, the desulfurization reaction chamber is divided into four reaction chambers of the same size by horizontally arranged partitions and vertically arranged partitions.

[0011] Furthermore, the reaction execution unit includes an inlet flue located at the middle of the bottom of the side wall of the reaction chamber, and outlet flues located on both sides of the top of the reaction chamber, and both the inlet flue and the outlet flue are equipped with control valves.

[0012] Furthermore, analytical instruments for monitoring flue gas parameters are installed on the reaction chamber, the inlet flue, and the outlet flue.

[0013] Furthermore, the top of the reaction chamber is provided with a cover plate, and a plurality of adsorbent addition ports are evenly arranged on the cover plate, and each adsorbent addition port is provided with a cap for opening or closing.

[0014] Furthermore, multiple grid plates are vertically arranged inside the reaction containment chamber, with each grid plate located on both sides of the adsorbent addition port, and a connecting plate for sealing the material stack is provided at the top of each grid plate.

[0015] Furthermore, the angle between each grid sheet in the grid plate and the horizontal plane is 50° to 70°.

[0016] Furthermore, each of the reaction chambers contains multiple independent storage bins, and the number of storage bins is the same as the number of adsorbent addition ports.

[0017] Furthermore, the reaction execution unit also includes a discharge bin located at the bottom of the reaction chamber and having a conical structure, and a discharge valve is installed at the discharge port of the discharge bin.

[0018] Furthermore, the reaction execution unit also includes an online purging device, one end of which is connected to the outlet flue and the other end of which is connected to the inlet flue.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. This utility model dry desulfurization treatment device occupies a small area. The device uses partitions to divide the desulfurization reaction chamber into multiple reaction chambers. Each reaction chamber has an inlet flue and an outlet flue at the corresponding positions on the side wall and top. Compared with traditional dry desulfurization equipment, the layout is more compact and reasonable, and the air passage area is increased, which effectively reduces the overall footprint of the device and saves valuable site resources for enterprises. It is especially suitable for industrial environments with limited space.

[0021] 2. The dry desulfurization treatment device of this utility model has low operating cost, which is reflected in the following aspects: First, because the reaction execution units of this device are independent of each other, the operating status of each unit can be flexibly adjusted according to actual production needs, avoiding unnecessary energy consumption; Second, it has an online material replacement function, which eliminates the need to stop the machine to replace the adsorbent, reducing production interruption losses caused by shutdown and damage to the equipment caused by frequent start-stop, thereby reducing the maintenance cost and overall operating cost of the equipment, and improving the service life and operational stability of the equipment.

[0022] 3. This novel dry desulfurization treatment device allows for the addition of adsorbent to any reaction chamber via a feeding unit. The specially designed structure of the reaction chamber, including a sealed adsorbent inlet, side grid plates, and connecting plates, ensures both convenience and sealing during adsorbent addition, while also ensuring uniform distribution of the adsorbent within the chamber for highly efficient desulfurization. Furthermore, after the reaction is complete, the conical discharge bin and discharge valve at the bottom facilitate unloading. The entire process requires no interruption of equipment operation, significantly improving production efficiency and meeting the continuous production needs of high-pollution industries. This provides strong support for enterprises' environmental governance and economic benefit enhancement. Attached Figure Description

[0023] The accompanying drawings are incorporated in and form part of this specification, and together with the description, serve to explain the principles of this invention.

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic front view of the dry desulfurization treatment device of this utility model;

[0026] Figure 2 This is a top view schematic diagram of the dry desulfurization treatment device of this utility model;

[0027] Figure 3 This is a left-side schematic diagram of the dry desulfurization treatment device of this utility model;

[0028] Figure 4 This is a schematic diagram of the dry desulfurization treatment device (excluding the feeding unit) of this utility model;

[0029] Figure 5 This is a schematic diagram of the internal structure of the desulfurization reaction chamber in the dry desulfurization treatment device of this utility model;

[0030] Figure 6 This is a schematic diagram of the grid plate structure in the dry desulfurization treatment device of this utility model.

[0031] in:

[0032] 1 is the support frame;

[0033] 2 is the desulfurization reaction chamber;

[0034] 3 is a partition;

[0035] 4 is the reaction execution unit; 41 is the reaction containment chamber; 42 is the inlet flue; 43 is the outlet flue; 44 is the cover plate; 45 is the adsorbent addition port; 46 is the grid plate; 47 is the unloading bin; 48 is the unloading valve; 49 is the online purging device; 461 is the connecting plate; 462 is the grid leaf.

[0036] 5 is the feeding unit. Detailed Implementation

[0037] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses consistent with some aspects of this invention as detailed in the appended claims.

[0038] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0039] Please see Figures 1-6 This utility model provides a dry desulfurization treatment device with online material replacement function, including a support frame 1 connected to the foundation. The support frame 1 is made of high-strength steel and undergoes rust prevention treatment to ensure its stability and load-bearing capacity. A box-shaped desulfurization reaction chamber 2 is fixedly installed on the upper part of the support frame 1. The shell of the desulfurization reaction chamber 2 is made of corrosion-resistant materials, such as stainless steel or carbon steel with a special coating, to effectively resist the erosion of acidic substances in the flue gas during the desulfurization reaction process. The desulfurization reaction chamber 2 is divided into multiple reaction chambers 41 by partitions 3. The partitions 3 are welded or sealed to the inner wall of the desulfurization reaction chamber 2, thereby ensuring that each reaction chamber 41 is completely independent of each other and preventing flue gas leakage or mutual interference. Preferably, as shown in the attached figure of this embodiment... Figure 5As shown, the desulfurization reaction chamber 2 is divided into four identical reaction chambers 41 by horizontally and vertically arranged partitions 3. A set of reaction execution units 4 is formed around each reaction chamber 41. These four sets of reaction execution units 4 are independent of each other and possess complete flue gas desulfurization reaction functions. A feeding unit 5 is arranged directly above the desulfurization reaction chamber 2. The feeding unit 5 adopts existing technology and will not be described in detail here. The feeding unit 5 is mainly used to add the adsorbent required for the flue gas desulfurization reaction to any one of the four reaction execution units 4. With this arrangement, when a reaction execution unit 4 needs to replace its adsorbent, only that reaction execution unit 4 needs to be paused, without affecting the desulfurization operation of the other three reaction execution units 4, thus achieving the purpose of online adsorbent replacement. Furthermore, through the above structural design, this device increases the air passage area, reduces wind speed, and simultaneously reduces the device's operating resistance and equipment volume, thereby improving the device's desulfurization efficiency.

[0040] Specifically, in this embodiment of the invention, each reaction execution unit 4 includes an inlet flue 42 located at the middle of the bottom of the side wall of the reaction chamber 41, and outlet flues 43 located on both sides of the top of the reaction chamber 41. Multiple outlet flues 43 converge into a total exhaust pipe on both sides. This means that each reaction execution unit 4 includes one inlet flue 42 and two outlet flues 43, and the flue gas flows in a side-in, top-out manner. To better control the flow of flue gas and the operating status of the reaction execution unit 4, this embodiment not only installs control valves on both the inlet flue 42 and the outlet flue 43, but also installs analytical instruments for monitoring flue gas parameters on the reaction chamber 41, the inlet flue 42, and the outlet flue 43. These analytical instruments can detect key flue gas parameters such as sulfur dioxide content and particulate matter concentration in real time and accurately. Through continuous monitoring and analysis of this data, on the one hand, the opening of control valves can be adjusted in a timely manner based on the monitoring results to optimize the flow distribution of flue gas in each reaction execution unit 4, ensuring that the entire dry desulfurization treatment unit is always in a highly efficient and stable operating state. On the other hand, when the analytical instrument of a certain reaction execution unit 4 exceeds the set threshold and requires adsorbent replacement, the control valves on its corresponding inlet flue duct 42 and outlet flue duct 43 can be closed to temporarily isolate the unit from the entire flue gas treatment system, thereby smoothly carrying out the adsorbent replacement work without interfering with the normal desulfurization work of other reaction execution units 4.

[0041] The reaction chamber 41 is equipped with a sealing cover 44 at its top. Multiple adsorbent addition ports 45 are evenly distributed on the cover 44, and the number of adsorbent addition ports 45 matches the number of storage bins within the reaction chamber 41. As shown in the attached figures of this embodiment, each reaction execution unit 4 has two adsorbent addition ports 45 and two storage bins. Each adsorbent addition port 45 is equipped with a cap to control its opening or closing. This cap design allows for flexible operation during adsorbent addition; it can be opened when adsorbent needs to be added and closed promptly after addition, effectively preventing flue gas leakage and other external factors from interfering with the internal environment of the reaction chamber 41. Meanwhile, the device has two conical discharge chambers 47 at the bottom of the reaction chamber 41. This conical design facilitates the rapid sliding of the adsorbent during discharge. Furthermore, each discharge chamber 47 is equipped with a discharge valve 48 at its discharge port. When a reaction unit 4 needs to replace the adsorbent, the old adsorbent can be discharged from the discharge chamber 47 in an orderly manner by opening the discharge valve 48, thus completing the adsorbent discharge. Then, the new adsorbent can be added.

[0042] It should be noted that in this embodiment of the present invention, multiple grid plates 46 are vertically arranged in the reaction containment cavity 41, and each grid plate 46 is located on both sides of the adsorbent addition port 45. A connecting plate 461 is provided at the top of each grid plate 46. The connecting plate 461 is mainly used for the function of material stacking and sealing. It can effectively prevent the adsorbent from leaking or being unevenly distributed during the addition process, and ensure that the storage and reaction environment of the adsorbent in the reaction containment cavity 41 is more stable and reliable.

[0043] Furthermore, the grid plate 46, located below the connecting plate 461, is composed of multiple grid sheets 462. Each grid sheet 462 forms an angle between itself and the horizontal plane within a specific range of 50° to 70°. This angle design allows the adsorbent to form a reasonable accumulation pattern on the grid plate 46, which is beneficial for the uniform distribution of the adsorbent within the reaction chamber 41 and ensures that the flue gas fully contacts the adsorbent and undergoes an effective desulfurization reaction when passing through the grid plate 46. When the flue gas enters the reaction chamber 41 from the inlet flue duct 42, it passes through the grid plate 46 during its ascent. Due to the specific angle of the grid sheets 462, the flue gas fully interacts with the adsorbent at different levels, thereby maximizing the desulfurization efficiency and enabling the dry desulfurization treatment device of this invention to operate more efficiently and stably.

[0044] In this invention, each reaction execution unit 4 is equipped with an online purging device 49. One end of the online purging device 49 is connected to the outlet flue 43, and the other end is connected to the inlet flue 42. When a reaction execution unit 4 needs to be replaced, the online purging device 49 is activated to use the desulfurized flue gas in the outlet flue 43 to clean the reaction chamber 41. In actual operation, when a reaction execution unit 4 is about to enter the replacement stage, the control valves on its inlet flue 42 and outlet flue 43 are first closed to isolate the unit from the external flue gas system. Then, the online purging device 49 is activated. At this time, the desulfurized flue gas in the outlet flue 43 will be driven by a certain pressure difference to enter the reaction chamber 41 in reverse through the inlet flue 42, forming an airflow loop in the reaction chamber 41 to thoroughly purge and clean the residual adsorbent particles, dust, and other impurities in the chamber. This design not only effectively removes residual substances from the reaction chamber 41, creating a clean environment for the addition of new adsorbents, but also makes full use of the flue gas resources after desulfurization, avoids the introduction of additional purging media, reduces equipment operating costs and operational complexity, further improves the economy and practicality of the entire dry desulfurization treatment unit, and effectively ensures the high efficiency and stability of the unit during long-term operation.

[0045] The dry desulfurization treatment device provided in this embodiment of the invention is used as follows:

[0046] Organic waste gas enters the reaction chamber 41 through the inlet flue 42. Inside the reaction chamber 41, the organic waste gas is adsorbed and treated thanks to the specially designed grid plate 46 and the adsorbent deposited therebetween. Simultaneously, the analytical instruments installed on the reaction chamber 41, the inlet flue 42, and the outlet flue 43 are constantly operational, enabling real-time monitoring of the treatment effect of the organic waste gas inside and outside the reaction chamber 41.

[0047] When the analytical instrument in a reaction execution unit 4 detects that the relevant data exceeds the set threshold, it indicates that the adsorbent in the unit is close to saturation, and the response operation will be initiated. Specifically, firstly, the control valves on the inlet flue 42 and outlet flue 43 of this unit are closed, temporarily isolating the reaction execution unit 4 from the entire flue gas treatment system to avoid interference with other normally operating units. Next, the unloading valve 48 of this unit is opened, and the adsorbent in the unloading bin 47 at the bottom of the reaction chamber 41 begins to unload under gravity. After the unloading is completed, the unloading valve 48 is closed, the cover at the adsorbent addition port 45 is opened, and the feeding unit 5 is started to add new adsorbent into the reaction chamber 41. Finally, after the new adsorbent has been added, the online purging device 49 is started, and the flue gas after desulfurization in the outlet flue 43 is used to thoroughly clean the reaction chamber 41. After the cleaning is completed, the online purging device 49 is closed, and the control valves on the inlet flue 42 and outlet flue 43 of this unit are restored, allowing the reaction execution unit 4 to reconnect to the entire flue gas treatment system and resume normal organic waste gas adsorption treatment.

[0048] The above description is merely a specific embodiment of this utility model, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this utility model.

[0049] It should be understood that this utility model is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A dry desulfurization treatment device with online feed changing function, characterized in that, The system includes a support frame (1) connected to the foundation. A desulfurization reaction chamber (2) with a box structure is fixedly installed on the upper part of the support frame (1). The desulfurization reaction chamber (2) is divided into multiple reaction chambers (41) by a partition (3). A set of reaction execution units (4) is formed around each of the reaction chambers (41). The multiple sets of reaction execution units (4) are independent of each other and have complete flue gas desulfurization reaction functions. A feeding unit (5) is arranged directly above the desulfurization reaction chamber (2). The feeding unit (5) is used to add the adsorbent required for flue gas desulfurization reaction to any one of the reaction chambers (41) in the multiple sets of reaction execution units (4).

2. The dry desulfurization treatment device with online material changing function according to claim 1, characterized in that, The desulfurization reaction chamber (2) is divided into four reaction chambers (41) of the same size by a horizontally arranged partition (3) and a vertically arranged partition (3).

3. The dry desulfurization treatment device with online material changing function according to claim 1, characterized in that, The reaction execution unit (4) includes an inlet flue (42) located at the middle of the bottom of the side wall of the reaction containment cavity (41) and an outlet flue (43) located on both sides of the top of the reaction containment cavity (41). Both the inlet flue (42) and the outlet flue (43) are equipped with control valves.

4. The dry desulfurization treatment device with online material changing function according to claim 3, characterized in that, The reaction chamber (41), the inlet flue (42), and the outlet flue (43) are all equipped with analytical instruments for monitoring flue gas parameters.

5. The dry desulfurization treatment device with online material changing function according to claim 1, characterized in that, The top of the reaction chamber (41) is provided with a cover plate (44), and a plurality of adsorbent addition ports (45) are evenly provided on the cover plate (44), and each adsorbent addition port (45) is provided with a cap for opening or closing.

6. The dry desulfurization treatment device with online material changing function according to claim 5, characterized in that, The reaction containment chamber (41) is vertically provided with multiple grid plates (46), and each grid plate (46) is located on both sides of the adsorbent addition port (45). At the same time, each grid plate (46) is provided with a connecting plate (461) at the top of its top for sealing the stockpile.

7. The dry desulfurization treatment device with online material changing function according to claim 6, characterized in that, The angle between each grid leaf (462) in the grid plate (46) and the horizontal plane is 50° to 70°.

8. The dry desulfurization treatment device with online material changing function according to claim 5, characterized in that, Each of the reaction containment chambers (41) contains multiple independent storage bins, and the number of storage bins is the same as the number of adsorbent addition ports (45).

9. The dry desulfurization treatment device with online material changing function according to claim 1, characterized in that, The reaction execution unit (4) also includes a discharge bin (47) with a conical structure located at the bottom of the reaction containment chamber (41), and a discharge valve (48) is installed at the discharge port of the discharge bin (47).

10. The dry desulfurization treatment device with online material changing function according to any one of claims 3 to 9, characterized in that, The reaction execution unit (4) also includes an online purging device (49), one end of which is connected to the outlet flue (43) and the other end is connected to the inlet flue (42).

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