Spray reaction apparatus
By designing gas and fluid distributors in the spray reaction device, the gas to be treated is evenly distributed in the tower and fully contacts the processing fluid, which solves the problem of low reaction efficiency, improves the treatment effect and reduces energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA PETROLEUM & CHEMICAL CORP
- Filing Date
- 2024-12-19
- Publication Date
- 2026-06-23
Smart Images
Figure CN122252001A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the technical field of waste gas treatment equipment, and specifically relates to a spray reaction device. Background Technology
[0002] A spray reaction device is a type of acid and alkali waste gas treatment equipment. Acid and alkali waste gases are introduced into the spray reaction device as the gases to be treated, and a corresponding treatment fluid is sprayed onto the gas to cause a reaction between the gas and the treatment fluid, thereby completing the treatment of the acid and alkali waste gases. The treatment process involves multiple steps, including introducing the acid and alkali waste gases into the spray reaction device, introducing the treatment fluid into the spray reaction device, spraying the treatment fluid, and discharging the products and waste. All of these steps require significant energy and manpower. Therefore, to improve the economic efficiency of the spray reaction device in treating acid and alkali waste gases, it is necessary to improve the reaction efficiency between the treatment fluid and the acid and alkali waste gases within the spray reaction device. Summary of the Invention
[0003] The purpose of this application is to provide a spray reaction device to improve the reaction efficiency between the processing fluid and the gas to be treated.
[0004] To achieve the above objectives, this application provides a spray reaction apparatus, comprising:
[0005] The spray tower body has a central area formed at the bottom of the tower body;
[0006] A gas distributor, wherein the inlet of the gas distributor is connected to the gas delivery pipeline to be treated, and the outlet of the gas distributor is located inside the spray tower and faces the bottom of the spray tower. The orthographic projection of the outlet of the gas distributor in the plane where the bottom of the tower is located is located in the central area.
[0007] A fluid distributor is arranged on the inner wall of the spray tower and connected to the fluid delivery pipeline.
[0008] In some embodiments, the center of the central region is located on the central axis of the spray tower body, and the center of the orthographic projection of the gas distributor outlet in the plane where the bottom of the tower is located coincides with the center of the central region.
[0009] In some embodiments, the gas distributor includes multiple inlet pipe sections connected in sequence, with the first inlet pipe section connected to the gas delivery pipeline and the central axis of the last inlet pipe section coinciding with the central axis of the spray tower.
[0010] In some embodiments, the number of intake pipe sections is three, with the central axis of the first intake pipe section being perpendicular to the central axis of the last intake pipe section.
[0011] In some embodiments, the inner diameter of the air inlet pipe section at the end is less than or equal to 1 / 6 of the inner diameter of the spray tower body.
[0012] In some embodiments, there are multiple fluid distributors, which are arranged at intervals along the axial direction of the spray tower body.
[0013] In some embodiments, the fluid distributor located relatively close to the bottom of the spray tower is a bottom fluid distributor, and the gas distributor is located between the bottom fluid distributor and the bottom of the spray tower.
[0014] In some embodiments, the axial distance between the outlet of the gas distributor and the bottom of the spray tower is less than or equal to 1 / 4 of the axial distance between the bottom fluid distributor and the bottom of the spray tower.
[0015] In some embodiments, the axial distance between the gas distributor's inlet and the bottom of the spray tower is less than or equal to half the axial distance between the bottom fluid distributor and the bottom of the spray tower.
[0016] In some embodiments, the fluid distributor includes a plurality of nozzles arranged circumferentially along the spray tower body, the spray angle of the nozzles being greater than 90° and less than 180°.
[0017] The spray reaction device provided in this application has the following beneficial effects through the above technical solution:
[0018] The spray tower provides a reaction site for the treatment of acidic and alkaline waste gases. A gas-to-be-treated pipeline introduces the waste gas and connects to a gas distributor within the spray tower. A treatment fluid pipeline introduces the treatment fluid and connects to a fluid distributor within the spray tower. During the treatment process, the gas to be treated is sprayed towards the bottom of the spray tower through the gas distributor, while the treatment fluid is simultaneously sprayed into the spray tower through the fluid distributor, thus completing the treatment of the gas. In this application, after colliding with the bottom of the tower, the gas to be treated disperses outward from the central area and flows upward along the inner wall of the spray tower. During this upward flow, the gas comes into full contact with the treatment fluid, thereby improving the contact efficiency between the treatment fluid and the gas to be treated, and consequently, improving the reaction efficiency between them.
[0019] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description
[0020] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:
[0021] Figure 1 This is a schematic diagram of the spray reaction device according to a specific embodiment of this application.
[0022] Explanation of reference numerals in the attached figures
[0023] 100. Spraying reaction device; 1. Spraying tower body; 2. Gas distributor; 3. Fluid distributor; 4. Gas outlet; 5. Demister. Detailed Implementation
[0024] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.
[0025] The terminology of the spray reaction apparatus 100 according to this application is described below with reference to the accompanying drawings.
[0026] like Figure 1 As shown, a specific embodiment of this application provides a spray reaction device 100, including a spray tower body 1, a gas distributor 2, and a fluid distributor 3. The bottom of the spray tower body 1 forms a central region. The inlet of the gas distributor 2 is connected to a gas delivery pipeline, and the outlet of the gas distributor 2 is located inside the spray tower body 1 and faces the bottom of the spray tower body 1. The orthographic projection of the outlet of the gas distributor 2 in the plane where the bottom of the tower is located is located in the central region. The fluid distributor 3 is arranged on the inner wall surface of the spray tower body 1 and is connected to the fluid delivery pipeline.
[0027] To improve the reaction efficiency between the gas to be treated and the processing fluid, the contact time can be increased. In other words, the height of the spray tower 1 and the number of fluid distributors 3 can be increased to extend the contact time between the gas to be treated and the processing fluid. However, increasing the contact time requires increasing the volume and cost of the spray reaction device 100, thus reducing its economic efficiency. Alternatively, the reaction efficiency can be improved by increasing the contact efficiency, i.e., by allowing more gas to be treated to contact the processing fluid within the same reaction space and time. In this application, the gas to be treated is sprayed towards the central region of the bottom of the spray tower 1 through the gas distributor 2, causing the gas to diffuse outward from the central region to contact the inner wall of the spray tower 1 and flow along the inner wall, thus preventing the gas from flowing out of its designated area. Simultaneously, the processing fluid is sprayed through the slurry distributor arranged on the inner wall, allowing the processing fluid to contact and react with the gas to be treated flowing along the inner wall, ensuring sufficient contact between the processing fluid and the gas to be treated, thereby improving the reaction efficiency between the processing fluid and the gas to be treated.
[0028] It should be noted that those skilled in the art will understand that the selection of appropriate processing fluids for different gases to be treated is well known to them.
[0029] The phenomenon of gas flow deviation refers to the uneven distribution of the gas to be treated flowing into the spray tower 1, i.e., the local accumulation of the gas. This is especially true when the gas is directly introduced from a fixed position in the tower body, causing it to accumulate near the point of introduction, while areas further away contain very little gas. Since the treatment fluid is sprayed as a whole into the spray tower 1, this gas flow deviation reduces the reaction efficiency between the treatment fluid and the gas. The spray reaction device 100 provided in this application primarily aims to prevent this flow deviation, thereby improving the uniformity of the gas to be treated within the spray tower 1.
[0030] In particular, the spray reaction device 100 provided in the specific embodiments of this application has higher processing efficiency for gases with a density less than air. Specifically, gases with a density less than air, after colliding with the bottom of the tower and dispersing outwards from the central region, are more likely to flow upwards and contact the processing fluid. In other words, the contact efficiency between gases with a density less than air and the processing fluid is higher. Currently, carbon cycling and carbon neutrality are widely concerned hot issues. Among them, a key step is the absorption / mineralization of carbon dioxide. The spray reaction device 100 provided in the specific embodiments of this application can be well applied to the carbon dioxide absorption / mineralization process and has high economic efficiency.
[0031] In this application, unless otherwise stated, the axial direction of the spray tower body 1 is the vertical direction, as indicated by the arrow in the attached drawing.
[0032] Preferably, the center of the central region at the bottom of the spray tower 1 is located on the central axis of the spray tower 1, and the center of the orthographic projection of the outlet of the gas distributor 2 onto the plane of the bottom of the tower coincides with the center of the central region. This allows the gas distributor 2 to spray the gas to be treated toward the center of the bottom of the tower, and the gas diffuses outward along the plane of the bottom of the tower, thereby preventing the gas to be treated from accumulating locally within the spray tower 1. Since the processing fluid sprayed by the fluid distributor 3 has high uniformity, improving the uniformity of the distribution of the gas to be treated within the spray tower 1 can effectively improve the reaction efficiency.
[0033] In some embodiments, the spray tower body 1 has a circular cross-sectional shape. The spray tower body 1 includes a bottom, a body, and a top arranged coaxially. The body is cylindrical and the top is frustum-shaped. The spray tower body 1 with a circular cross-sectional shape has a larger internal surface area, thereby increasing the reaction space inside the spray tower body 1.
[0034] Specifically, a fluid outlet is provided at the bottom of the tower, a gas outlet 4 is provided at the top of the tower, a gas distributor 2 is fixed on the inner wall of the tower body and passes through the tower body to connect with the gas delivery pipeline to be treated, and a fluid distributor 3 is fixed on the inner wall of the tower body and passes through the tower body to connect with the fluid delivery pipeline to be treated.
[0035] Furthermore, a demister 5 is installed at the upper end of the tower body. Before the reacted gas flows out from the gas outlet 4, a demister step is required to reduce pollution.
[0036] In some embodiments, the gas distributor 2 includes multiple inlet pipe sections connected in sequence. The inlet pipe section at the first end is connected to the gas delivery pipe, and the central axis of the inlet pipe section at the end coincides with the central axis of the spray tower body 1. In other words, the gas to be treated flowing out from the inlet pipe section at the end flows from top to bottom to the center of the tower bottom. It can be seen that the gas distributor 2 composed of multiple inlet pipe sections can improve the uniformity of the gas to be treated, thereby simplifying the construction of the spray reaction device 100 and reducing the cost of the spray reaction device 100 to improve economy.
[0037] Specifically, there are three inlet pipe sections. The central axis of the first inlet pipe section is perpendicular to the central axis of the last inlet pipe section. In other words, the first inlet pipe section conveys the gas to be treated radially along the spray tower body 1 to the central axis of the tower body, while the last inlet pipe section conveys the gas to be treated axially along the spray tower body 1 to the center of the bottom of the tower. The inlet pipe section between the first and last inlet pipe sections is a right-angle bend. In fact, the three inlet pipe sections are integrally manufactured inlet bends. Inlet bends are a common component with a relatively simple manufacturing process and low production cost. Therefore, using inlet bends as gas distributors 2 is highly economical.
[0038] Furthermore, the inner diameter of the inlet pipe section at the end is less than or equal to 1 / 6 of the inner diameter of the spray tower body 1. Since the gas to be treated needs to be dispersed radially outwards to the inner wall of the tower body after contacting the bottom of the tower, the smaller inner diameter of the inlet pipe section at the end limits the volume of gas to be treated simultaneously in contact with the bottom of the tower. This allows for better diffusion of the gas in the central area of the bottom of the tower, thereby improving the uniformity of the gas within the spray tower body 1. Simulation experiments have shown that when the inner diameter of the inlet pipe section at the end is 1 / 6 of the inner diameter of the spray tower body 1, it ensures both the velocity of the gas entering the spray tower body 1 and prevents the gas from flowing out of the spray tower body 1.
[0039] In some embodiments, there are multiple fluid distributors 3, which are arranged at intervals along the axial direction of the spray tower body 1. In this application, the uniformity of the processing fluid in the spray tower body 1 is increased by spraying the processing fluid into the spray tower body 1 through multiple fluid distributors arranged at intervals in the vertical direction, thereby avoiding the agglomeration of the processing fluid and improving the processing effect of the spray reaction device 100. At the same time, by spraying the processing fluid into the spray tower body 1 through multiple fluid distributors arranged at intervals in the vertical direction, the gas to be treated will continue to be in contact with the processing fluid during its upward flow until it flows out from the gas outlet 4, thereby increasing the contact time between the processing fluid and the gas to be treated so that the processing fluid and the gas to be treated can react fully, thereby improving the processing effect of the spray reaction device 100.
[0040] Specifically, the fluid distributor 3 includes an annular section and multiple nozzle sections. The annular section is fixed to the inner wall of the tower body by stiffeners and extends circumferentially along the spray tower body 1. The multiple nozzle sections are evenly spaced on the annular section. The treated fluid flows into the annular section and is then pressurized and sprayed out by the nozzle sections. The nozzle sections are arranged radially spaced from the inner wall of the tower body. The spray angle of the nozzle sections is greater than 90° and less than 180°. In other words, the nozzle sections spray the treated fluid downward and radially outward along the spray tower body 1. The treated fluid flows downward by gravity and the spray pressure provided by the nozzle sections and reacts with the upward-flowing gas to be treated near the inner wall surface. This matches the spray distribution of the treated fluid with the flow path of the gas to be treated, thereby ensuring that the treated fluid and the gas to be treated react fully.
[0041] Furthermore, simulation experiments show that when the spray angle of the nozzle is 120°, the processing fluid sprayed from the nozzle can diffuse before contacting the gas to be treated. In other words, the processing fluid sprayed from each fluid distributor 3 will form a conical spray field arranged coaxially with the tower body, thereby achieving full coverage of the inner wall of the tower body, and thus enabling the processing fluid to fully react with the gas to be treated.
[0042] In some embodiments, the fluid distributor 3 located relatively close to the bottom of the spray tower 1 is the bottom fluid distributor 3, and the gas distributor 2 is located between the bottom fluid distributor 3 and the bottom of the spray tower 1. By arranging the gas distributor 2 below the bottom fluid distributor 3, the gas distributor 2 avoids obstructing the processing fluid sprayed from the bottom fluid distributor 3, thereby preventing some of the gas to be treated from failing to fully react with the processing fluid, and thus improving the reliability of the spray reaction device 100.
[0043] Preferably, the axial distance between the outlet of the gas distributor 2 and the bottom of the spray tower 1 is less than or equal to 1 / 4 of the axial distance between the bottom fluid distributor 3 and the bottom of the spray tower 1, so that the gas to be treated can contact the bottom of the tower to change the flow direction and achieve radial diffusion along the spray tower 1, thereby improving the reliability of the spray reaction device 100.
[0044] Preferably, the axial distance between the gas inlet of the gas distributor 2 and the bottom of the spray tower 1 is less than or equal to 1 / 2 of the axial distance between the bottom fluid distributor 3 and the bottom of the spray tower 1, so as to reduce the influence of the gas distributor 2 on the flow of the gas to be treated, thereby enabling the gas to be treated to diffuse radially along the spray tower 1 and flow upward along the inner wall of the tower body, thereby improving the reliability of the spray reaction device 100.
[0045] In the exemplary embodiment of this application, the spray tower 1 has an inner diameter of 3m and a height of 17m; the gas distributor 2 is a right-angle bend with an inner diameter of 0.5m, the axial distance between the central axis of the horizontal section of the right-angle bend and the plane where the bottom of the tower is located is 2m, the central axis of the vertical section of the right-angle bend coincides with the central axis of the spray tower 1, and the axial distance between the plane where the gas outlet of the right-angle bend is located and the plane where the bottom of the tower is located is 1m; three fluid distributors 3 are arranged from top to bottom, with an axial distance of 4m between two adjacent fluid distributors 3, each fluid distributor 3 includes 18 nozzles, the 18 nozzles are evenly spaced on the annular section along the circumference of the spray tower 1, the spray angle of the nozzles is 120°, and the axial distance between the central axis of the horizontal section of the right-angle bend and the bottom of the spray tower 1 is 2m.
[0046] In an exemplary embodiment of this application, a mixture of nitrogen and carbon dioxide (carbon dioxide concentration of 15%) is used as the gas to be treated, and a slurry mixture of carbide slag and water is used as the treatment fluid. The spray reaction apparatus 100 of this application is utilized, and the apparent gas flow rate of the spray reaction apparatus 100 is set to 10,000 m³ / s. 3 / h and a spray volume of 1100m 3 In a simulation experiment conducted at / h, the gas to be treated enters the spray tower 1 through the gas distributor 2, contacts the bottom of the tower, changes direction and diffuses upward, effectively avoiding gas flow deviation and thus improving the contact efficiency between the gas to be treated and the treatment fluid.
[0047] In this application, the uniformity of the gas to be treated in the spray tower 1 is improved by the gas distributor 2, and the uniformity of the processing fluid in the spray tower 1 is improved by the fluid distributor 3, so that the gas to be treated and the processing fluid can fully contact and react, thereby improving the reaction efficiency of the processing fluid and the gas to be treated.
[0048] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0049] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0050] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0051] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.
Claims
1. A spray reaction device, characterized in that, include: The spray tower body (1) has a central area formed at the bottom of the tower body (1); Gas distributor (2), the inlet of the gas distributor (2) is connected to the gas delivery pipeline to be treated, the outlet of the gas distributor (2) is located inside the spray tower body (1) and faces the bottom of the spray tower body (1), and the orthographic projection of the outlet of the gas distributor (2) in the plane where the bottom of the tower is located is located in the central area. A fluid distributor (3) is arranged on the inner wall of the spray tower body (1) and connected to the processing fluid delivery pipeline.
2. The spray reaction apparatus according to claim 1, characterized in that, The center of the central region is located on the central axis of the spray tower body (1), and the center of the orthographic projection of the gas outlet of the gas distributor (2) in the plane where the bottom of the tower is located coincides with the center of the central region.
3. The spray reaction apparatus according to claim 2, characterized in that, The gas distributor (2) includes multiple inlet pipe sections connected in sequence. The inlet pipe section at the first end is connected to the gas delivery pipeline to be treated, and the central axis of the inlet pipe section at the end coincides with the central axis of the spray tower body (1).
4. The spray reaction apparatus according to claim 3, characterized in that, The number of intake pipe sections is three, wherein the central axis of the intake pipe section at the first end is perpendicular to the central axis of the intake pipe section at the last end.
5. The spray reaction apparatus according to claim 3, characterized in that, The inner diameter of the air inlet pipe section located at the end is less than or equal to 1 / 6 of the inner diameter of the spray tower body (1).
6. The spray reaction apparatus according to claim 1, characterized in that, The number of fluid distributors (3) is multiple, and the multiple fluid distributors (3) are arranged at intervals along the axial direction of the spray tower body (1).
7. The spray reaction apparatus according to claim 6, characterized in that, The fluid distributor (3) located relatively close to the bottom of the spray tower body (1) is the bottom fluid distributor (3), and the gas distributor (2) is located between the bottom fluid distributor (3) and the bottom of the spray tower body (1).
8. The spray reaction apparatus according to claim 7, characterized in that, The axial distance between the outlet of the gas distributor (2) and the bottom of the spray tower (1) is less than or equal to 1 / 4 of the axial distance between the bottom fluid distributor (3) and the bottom of the spray tower (1).
9. The spray reaction apparatus according to claim 7, characterized in that, The axial distance between the air inlet of the gas distributor (2) and the bottom of the spray tower (1) is less than or equal to 1 / 2 of the axial distance between the bottom fluid distributor (3) and the bottom of the spray tower (1).
10. The spray reaction apparatus according to claim 6, characterized in that, The fluid distributor (3) includes a plurality of nozzles arranged circumferentially along the spray tower body (1), wherein the spray angle of the nozzles is greater than 90° and less than 180°.