Liquid flow channel structure of multi-stage tail gas purification device

Abstract

The utility model belongs to the technical field of tail gas treatment, and particularly relates to a liquid runner structure of a multi-stage tail gas purification device, which is characterized in that reaction liquid enters a rotor, is accelerated by the rotor and then is thrown out to a reaction chamber; the liquid flow channel structure comprises a liquid phase inlet pipe and a liquid outlet hole. The liquid phase inlet pipe is used for guiding reaction liquid into the rotor; the liquid outlet holes are formed in the upper top plate and the lower bottom plate of each reaction chamber, and the lower bottom plate of each reaction chamber is inclined towards the liquid outlet holes. According to the utility model, redundant reaction liquid in each layer sequentially flows into the reaction chamber in the next layer and is finally discharged from the liquid outlet, so that the unreacted redundant reaction liquid can be utilized, the reaction liquid can be used in a multi-stage manner, the liquid consumption is reduced, the waste is reduced, and the energy is saved; and the lower bottom plate is inclined towards the liquid outlet holes, so that redundant reaction liquid can smoothly enter the next layer of reaction chamber, and waste caused by accumulation of the redundant reaction liquid on the lower bottom plate is prevented.

Description

Technical Field

[0001] This utility model belongs to the field of exhaust gas treatment technology, and in particular relates to a liquid flow channel structure of a multi-stage exhaust gas purification device. Background Technology

[0002] Hypergravity technology is an innovative technique for enhancing gas-liquid mass transfer processes. It utilizes the hypergravity environment to increase the specific surface area of ​​gas-liquid contact and reduce mass transfer resistance, thereby increasing the gas-liquid mass transfer rate and reducing reactor volume. The main mechanism of hypergravity technology involves the formation of tiny droplets, films, and filaments of liquid on the surface and in the pores of the packing material under centrifugal accelerations hundreds to thousands of times higher than Earth's gravitational field. This liquid flows radially from the inside out, increasing the specific surface area of ​​gas-liquid contact and improving the mass transfer coefficient due to microscopic mixing. Generally, compared to traditional gas-liquid contact devices, hypergravity reactors can increase the mass transfer rate per unit volume by tens to hundreds of times, while significantly reducing the reactor's equipment volume.

[0003] However, conventional rotating packed bed reactors are all single-layer rotating packed bed devices. Under the same surface exhaust gas velocity and surface liquid velocity, improving the mass transfer effect between gas and liquid usually requires increasing the size of the rotating packed bed. However, an excessively large rotation radius will cause mechanical stress on the spindle and bearings, making them prone to damage. Therefore, the application of single-layer rotating packed bed devices is limited. If a multi-layer counter-current rotating packed bed could be developed, its gas-liquid mass transfer area could be significantly increased, thereby improving the mass transfer efficiency.

[0004] For example, in a multi-layer counter-current rotary packed bed with patent number CN104436736A, exhaust gas enters the packed bed from the bottom, and liquid enters the packed bed from the top and passes through multiple reaction chambers to collide and react with the exhaust gas. Excess liquid will enter each reaction chamber from top to bottom. However, because the bottom plate of the reaction chamber is flat, the liquid flow is slow and liquid is prone to accumulate. The accumulated liquid will remain in the reaction chamber and cause waste. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned technical problems by providing a liquid flow channel structure for a multi-stage exhaust gas purification device. This structure enables the reaction liquid to be used in multiple stages, reducing liquid consumption, minimizing waste, and saving energy. The lower base plates are all inclined towards the liquid outlet, allowing excess reaction liquid to smoothly enter the next reaction chamber and preventing excess reaction liquid from accumulating on the lower base plates and causing waste.

[0006] In view of this, the present invention provides a liquid flow channel structure for a multi-stage exhaust gas purification device, the exhaust gas purification device comprising:

[0007] A sealed housing, the sealed housing including a liquid outlet, an exhaust gas inlet, and an exhaust gas outlet;

[0008] A mandrel, which penetrates the sealed housing;

[0009] The reaction chambers are at least three in number, and multiple reaction chambers are arranged in a sealed shell along the axis of the spindle. Each reaction chamber is equipped with a rotor.

[0010] The tail gas flow channel structure has a tail gas inlet and a tail gas outlet at its two ends, which allow the tail gas to enter each reaction chamber from bottom to top.

[0011] A liquid flow channel structure, wherein the liquid flow channel structure allows the reaction liquid to enter the rotor and be accelerated by the rotor before being thrown out into the reaction chamber;

[0012] The liquid flow channel structure includes:

[0013] A liquid inlet pipe is used to guide the reaction liquid into the rotor;

[0014] Liquid outlet holes are provided on the upper top plate and lower bottom plate of each reaction chamber, and the lower bottom plate of each reaction chamber is inclined toward the liquid outlet holes.

[0015] In this technical solution, the reaction liquid enters the rotor through the liquid phase inlet pipe, is accelerated by the rotor, and then thrown out. The thrown-out reaction liquid reacts with the exhaust gas. The excess reaction liquid falls onto the bottom plate of the reaction chamber due to gravity, and flows from the liquid outlet of the bottom plate to the next layer of reaction chamber. In this way, the excess reaction liquid of each layer flows to the next layer of reaction chamber in sequence and is finally discharged from the liquid outlet. This allows the unreacted excess reaction liquid to be used in multiple stages, reducing liquid consumption, reducing waste, and saving energy. The bottom plate is inclined towards the liquid outlet so that the excess reaction liquid can smoothly enter the next layer of reaction chamber and prevent the excess reaction liquid from accumulating on the bottom plate and causing waste.

[0016] Furthermore, the exhaust gas flow channel structure includes:

[0017] The exhaust vents are provided on the upper top plate and lower bottom plate of each reaction chamber, and the two exhaust vents are staggered.

[0018] Each reaction chamber has a baffle fixedly installed between its upper top plate and lower bottom plate. The upper and lower ends of the baffle are fixedly connected to the upper top plate and the lower bottom plate, and the left and right ends extend to the inner wall of the reaction chamber and the outer side of the rotor, respectively. The baffle is set on one side of the exhaust port to guide the exhaust gas.

[0019] The exhaust vents on the top and bottom plates of the reaction chamber are located on both sides of the baffle.

[0020] In this technical solution, by setting up baffles, the exhaust gas enters the reaction chamber through the exhaust gas hole of the bottom plate and can only flow around the inner cavity of the reaction chamber away from the baffles. The exhaust gas hole on the top plate is staggered from the exhaust gas hole on the top plate and is set on both sides of the baffles. In this way, the exhaust gas can flow through the reaction chamber once before it can be discharged from the exhaust gas hole on the top plate into the upper reaction chamber. This increases the residence time of the exhaust gas in the reaction chamber, increases the reaction time, and improves the reaction conversion rate.

[0021] Furthermore, each reaction chamber has a corresponding liquid inlet pipe, one end of which extends to the outside of the sealed shell and connects to the storage tank, and the other end extends into the rotor of the corresponding reaction chamber.

[0022] Furthermore, the liquid inlet pipe corresponding to the reaction chamber located between the uppermost and lowermost reaction chambers has a branch at the liquid outlet hole on the top plate. The branch is connected to the liquid outlet hole and can receive the excess reaction liquid discharged from the liquid outlet hole and guide it into the rotor.

[0023] In this technical solution, each reaction chamber has a different liquid inlet pipe that can independently add liquid to each reaction chamber. The liquid inlet pipe corresponding to the reaction chamber in the middle layer is also provided with a branch connected to the liquid outlet, which can receive the reaction liquid discharged from the liquid outlet and guide the reaction liquid to the rotor of the next reaction chamber. In this way, the excess reaction liquid that has not been reacted can be utilized, so that the reaction liquid can be used in multiple stages, reducing the amount of liquid used, reducing waste and saving energy.

[0024] Furthermore, the corresponding exhaust gas orifice openings on the upper top plate and lower bottom plate protrude outwards, and the exhaust gas orifice openings are higher than the liquid outlet orifice openings.

[0025] In this technical solution, the tail gas port opening is higher than the liquid outlet port opening to prevent excess reaction liquid from flowing into the next reaction chamber from the tail gas port. This ensures that excess reaction liquid can only flow from the liquid outlet port to the liquid phase inlet pipe and then into the rotor, thus guaranteeing that the reaction liquid can be accelerated by the rotor and react with the tail gas.

[0026] Furthermore, the tilt angle of the lower base plate is 1-2°.

[0027] Furthermore, the liquid outlet is located at the bottom of the sealed housing.

[0028] Furthermore, the exhaust gas inlet is located on the lower side of the sealed housing, and the exhaust gas outlet is located at the bottom of the sealed housing.

[0029] The beneficial effects of this utility model are:

[0030] 1. By making the exhaust gas flow and liquid flow in opposite directions in each reaction chamber, i.e., the exhaust gas flows clockwise and the liquid flows counterclockwise or the exhaust gas flows counterclockwise and the liquid flows clockwise, the liquid and exhaust gas thrown out at high speed will collide and react violently in the reaction chamber, which can improve the reaction efficiency and make the exhaust gas purification more thorough.

[0031] 2. By setting up the baffle, the exhaust gas enters the reaction chamber through the exhaust gas hole of the bottom plate and can only flow around the inner cavity of the reaction chamber away from the baffle. The exhaust gas hole on the top plate is staggered from the exhaust gas hole of the top plate and is set on both sides of the baffle. In this way, the exhaust gas can flow through the reaction chamber once before it can be discharged from the exhaust gas hole of the top plate into the upper reaction chamber. This increases the residence time of the exhaust gas in the reaction chamber, increases the reaction time, and improves the reaction conversion rate.

[0032] 3. After the reaction liquid enters the rotor through the liquid phase inlet pipe, it is accelerated by the rotor and then thrown out. The thrown-out reaction liquid reacts with the exhaust gas. The excess reaction liquid falls onto the bottom plate of the reaction chamber due to gravity, and flows from the liquid outlet of the bottom plate to the next layer of reaction chamber. In this way, the excess reaction liquid of each layer flows to the next layer of reaction chamber in sequence and is finally discharged from the liquid outlet. This allows the unreacted excess reaction liquid to be used in multiple stages, reducing the amount of liquid used, reducing waste and saving energy.

[0033] 4. The tail gas port opening is higher than the liquid outlet port opening to prevent excess reaction liquid from flowing into the next reaction chamber through the tail gas port. This ensures that excess reaction liquid can only flow from the liquid outlet port into the liquid phase inlet pipe and then into the rotor, thus guaranteeing that the reaction liquid can be accelerated by the rotor and react with the tail gas.

[0034] 5. The bottom plates are all inclined towards the liquid outlet, which allows excess reaction liquid to flow smoothly into the next reaction chamber and prevents excess reaction liquid from accumulating on the bottom plates and causing waste. Attached Figure Description

[0035] Figure 1 This is a cross-sectional view of the present invention;

[0036] Figure 2 This is an internal top view of the present invention;

[0037] Figure 3 It is the flow path of the exhaust gas and the reaction liquid;

[0038] Figure 4 This is a magnified view A;

[0039] 1. Sealed shell; 2. Spindle; 3. Reaction chamber; 4. Liquid outlet; 5. Exhaust gas inlet; 6. Exhaust gas outlet; 7. Rotor; 8. Exhaust gas port; 9. Baffle; 10. Top plate; 11. Bottom plate; 12. Liquid phase inlet pipe; 13. Liquid outlet; 14. Branch. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0041] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0042] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0043] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0044] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0045] Example 1:

[0046] like Figure 1 As shown, a multi-stage exhaust gas purification device includes a sealed housing 1, a spindle 2, reaction chambers 3, an exhaust gas flow channel structure, and a liquid flow channel structure. The sealed housing 1 includes a liquid outlet 4, an exhaust gas inlet 5, and an exhaust gas outlet 6; the liquid outlet 4 is located at the bottom of the sealed housing 1. The exhaust gas inlet 5 is located on the lower side of the sealed housing 1, and the exhaust gas outlet 6 is located at the bottom of the sealed housing 1. The spindle 2 penetrates the sealed housing 1; there are at least three reaction chambers 3, arranged along the axis of the spindle 2 within the sealed housing 1. Each reaction chamber 3 contains a rotor 7, which rotates under the drive of the spindle 2. The tail gas flow channel structure has a tail gas inlet 5 and a tail gas outlet 6 at its two ends, allowing the tail gas to enter each reaction chamber 3 sequentially from bottom to top. The liquid flow channel structure allows the reaction liquid to enter the rotor 7 and be accelerated by the rotor 7 before being thrown out into the reaction chamber 3. The tail gas flow channel structure and the liquid flow channel structure ensure that the tail gas flow direction and the liquid flow direction are opposite in each reaction chamber 3, reacting within the reaction chamber 3. By making the tail gas flow direction and the liquid flow direction opposite in each reaction chamber 3, in this embodiment, the tail gas flows clockwise and the liquid flows counterclockwise. This causes the high-speed thrown liquid and tail gas to collide and react violently within the reaction chamber 3, which improves the reaction efficiency and makes the tail gas purification more thorough.

[0047] Example 2:

[0048] like Figure 1-2 As shown, the exhaust gas passage structure includes an exhaust gas port 8 and a baffle 9. The exhaust gas port 8 is provided on the upper top plate 10 and the lower bottom plate 11 of each reaction chamber 3, and the two exhaust gas ports 8 are staggered. Figure 1From top to bottom, the exhaust ports are numbered 1-4. Figure 2 The exhaust ports 8 are numbered 1-4 in a counter-clockwise direction. A baffle 9 is fixedly installed between the upper top plate 10 and the lower bottom plate 11 of each reaction chamber 3. The upper and lower ends of the baffle 9 are fixedly connected to the upper top plate 10 and the lower bottom plate 11, and the left and right ends extend to the inner wall of the reaction chamber 3 and the outer side of the rotor 7, respectively. The baffle 9 is set on one side of the exhaust port 8 to guide the exhaust gas. Figure 1 From top to bottom, the baffles are numbered 1-4. Figure 2 The baffles 9 are arranged in a counter-clockwise direction, numbered 1-4. The exhaust gas holes 8 on the upper top plate 10 and lower bottom plate 11 of the reaction chamber 3 are respectively located on both sides of the baffles 9. The baffles 9 ensure that the exhaust gas, after entering the reaction chamber 3 through the exhaust gas holes 8 on the lower bottom plate 11, can only flow away from the baffles 9 and around the inner cavity of the reaction chamber 3. The exhaust gas holes 8 on the upper top plate 10 are offset from those on the upper top plate 10 and are located on both sides of the baffles 9. This allows the exhaust gas to flow through the reaction chamber 3 once before exiting through the exhaust gas holes 8 on the upper top plate 10 into the next layer of the reaction chamber 3. This increases the residence time of the exhaust gas in the reaction chamber 3, increases the reaction time, and improves the reaction conversion rate. The specific flow direction of the exhaust gas is shown in [reference needed]. Figure 3 The line segment with a solid arrow is in the middle, and a barrier membrane is also installed at the 8-hole of the exhaust port to prevent the reaction liquid from entering.

[0049] Example 3:

[0050] like Figure 1-2 As shown in Figure 4, the liquid flow channel structure includes a liquid inlet pipe 12 and an outlet hole 13. Each reaction chamber 3 corresponds to a liquid inlet pipe 12. One end of the liquid inlet pipe 12 extends to the outside of the sealed shell 1 and connects to the storage tank, while the other end extends into the rotor 7 of the corresponding reaction chamber 3. The liquid inlet pipe 12 is used to guide the reaction liquid into the rotor 7. The liquid inlet pipe 12 corresponding to the reaction chamber 3 located between the uppermost and lowermost reaction chambers 3 has a branch 14 at the outlet hole 13 of the upper top plate 10. The branch 14 is connected to the outlet hole 13 and can receive excess reaction liquid discharged from the outlet hole 13 and guide it into the rotor 7.

[0051] Each reaction chamber 3 has an outlet hole 13 on its upper top plate 10 and lower bottom plate 11. The reaction liquid enters the rotor 7 through the liquid inlet pipe 12, is accelerated by the rotor 7, and then ejected. The ejected reaction liquid reacts with the exhaust gas. Excess reaction liquid falls onto the lower bottom plate 11 of the reaction chamber 3 due to gravity, and flows through the outlet hole 13 from the lower bottom plate 11 to the next reaction chamber 3. In this way, excess reaction liquid from each layer flows sequentially to the next reaction chamber 3 and is finally discharged from the liquid outlet 4. This allows for the utilization of unreacted excess reaction liquid, enabling multi-stage use of the reaction liquid, reducing liquid consumption, waste, and energy saving. The specific flow direction of the reaction liquid is shown in [reference needed]. Figure 3 A dashed line segment with an arrowhead.

[0052] Each reaction chamber 3 corresponds to a different liquid inlet pipe 12, which can independently add liquid to each reaction chamber 3. The liquid inlet pipe 12 corresponding to the reaction chamber 3 in the middle layer is also provided with a branch 14 connected to the liquid outlet 13, which can receive the reaction liquid discharged from the liquid outlet 13 and guide the reaction liquid to the rotor 7 of the next reaction chamber 3. In this way, the excess reaction liquid that has not been reacted can be utilized, so that the reaction liquid can be used in multiple stages, reducing the amount of liquid used, reducing waste and saving energy.

[0053] Example 4:

[0054] like Figure 1 As shown, the corresponding exhaust gas holes 8 on the upper top plate 10 and lower bottom plate 11 protrude outwards, and the exhaust gas holes 8 are higher than the liquid outlet holes 13. This higher position of the exhaust gas holes 8 prevents excess reaction liquid from flowing into the next reaction chamber 3 from the exhaust gas holes 8. Excess reaction liquid can only flow from the liquid outlet holes 13 to the liquid phase inlet pipe 12 and then into the rotor 7, ensuring that the reaction liquid is accelerated by the rotor 7 before reacting with the exhaust gas. The lower bottom plate 11 of each reaction chamber 3 is inclined towards the liquid outlet holes 13 at an angle of 1-2°. This inclination of the lower bottom plates 11 towards the liquid outlet holes 13 allows excess reaction liquid to smoothly enter the next reaction chamber 3, preventing excess reaction liquid from accumulating on the lower bottom plate 11 and causing waste.

[0055] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A liquid flow path structure of a multi-stage exhaust gas purification device, characterized by The multi-stage tail gas purification device comprises: a closed shell (1) comprising a liquid discharge port (4), a tail gas inlet (5), and a tail gas outlet (6); a mandrel (2) extending through the closed shell (1); a plurality of reaction chambers (3) arranged along the axis of the mandrel (2) in the closed shell (1), each reaction chamber (3) comprising a rotor (7); a tail gas flow channel structure having the tail gas inlet (5) and the tail gas outlet (6) at two ends thereof, the tail gas flow channel structure allowing the tail gas to enter the reaction chambers (3) from bottom to top in sequence; a liquid flow channel structure allowing the reaction liquid to enter the rotor (7) and be accelerated by the rotor (7) and then be thrown out to the reaction chamber (3); wherein the liquid flow channel structure comprises: a liquid phase inlet pipe (12) for guiding the reaction liquid into the rotor (7); a liquid outlet hole (13) provided on the upper top plate (10) and the lower bottom plate (11) of each reaction chamber (3), the lower bottom plate (11) of each reaction chamber (3) being inclined towards the liquid outlet hole (13).

2. The liquid flow path structure of a multi-stage exhaust purification device according to claim 1, characterized by The tail gas flow channel structure comprises: a tail gas hole (8) provided on the upper top plate (10) and the lower bottom plate (11) of each reaction chamber (3), the two tail gas holes (8) being staggered with respect to each other.

3. The liquid flow path structure of a multi-stage exhaust purification device according to claim 2, characterized by Each reaction chamber (3) corresponds to a liquid phase inlet pipe (12), one end of the liquid phase inlet pipe (12) extending to the outside of the closed shell (1) and being connected to a liquid storage tank, and the other end of the liquid phase inlet pipe (12) extending into the rotor (7) of the corresponding reaction chamber (3).

4. The liquid flow path structure of a multi-stage exhaust purification device according to claim 3, characterized by The liquid phase inlet pipe (12) corresponding to the reaction chamber (3) between the uppermost reaction chamber (3) and the lowermost reaction chamber (3) is provided with a branch pipe (14) at the liquid outlet hole (13) of the upper top plate (10), the branch pipe (14) being connected to the liquid outlet hole (13) to receive the excess reaction liquid discharged from the liquid outlet hole (13) and guide the excess reaction liquid into the rotor (7).

5. The liquid flow path structure of a multi-stage exhaust purification device according to claim 4, characterized by The tail gas hole (8) corresponding to the upper top plate (10) and the lower bottom plate (11) is outwardly convex, and the tail gas hole (8) is higher than the liquid outlet hole (13).

6. The liquid flow path structure of a multi-stage exhaust purification device according to claim 1, characterized by The inclination angle of the lower bottom plate (11) is 1-2°.

7. The liquid flow path structure of a multi-stage exhaust purification device according to claim 1, characterized by The liquid discharge port (4) is arranged at the lowermost part of the closed shell (1).

8. The liquid flow path structure of a multi-stage exhaust purification device according to claim 1, characterized by The tail gas inlet (5) is arranged at the lower side of the closed shell (1), and the tail gas outlet (6) is arranged at the lowermost part of the closed shell (1).

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