Flue gas desulfurization reactor
By designing the eccentric rotation and distribution of the Wenqili tube group in the flue gas desulfurization reactor, the problem of ash blocking and wear and corrosion under high sulfur and high wet smoke operating conditions is solved, and the full desulfurization reaction of flue gas and absorbers particles is achieved. , Reduce structural complexity and manufacturing installation costs.
Patent Information
- Application Number
- CN202411810281.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-01-28
AI Technical Summary
Existing flue gas desulfurization reactors are prone to ash blockage and wear and corrosion problems under high sulfur and high humidity flue gas conditions, and have complex structures, high manufacturing and installation costs, and are difficult to maintain.
A flue gas desulfurization reactor is designed, which uses the Wenqiuri tube group. The exit of multiple edges of Wenqili tube compared to the central eccentric setting of the Wenqili tube, and the rotation effect of the virtual round rotation is achieved to achieve the rotation and spray effect. Avoid it avoided Set up structures such as guidelines, spoiler ring and other structures inside the reaction area.
By eccentric rotating distribution, the Wenqili tube group realizes the signs of signs of spraying of flue gas and absorbent particles, promoting the adequate desulfurization reactions in the reaction flue, avoiding adhesive blockage and corrosion wear, reducing structural complexity and manufacturing Installation cost.
Smart Images
Figure CN119367955A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of flue gas purification equipment, and in particular to a flue gas desulfurization reactor. Background Art
[0002] The desulfurization reactor of the flue gas of the molten reduction furnace requires a higher desulfurization efficiency due to the high sulfur and high humidity of the flue gas. In order to achieve a higher desulfurization efficiency, most of them adopt the method of adding internal swirl structure, spoiler ring or bypass flue gas to achieve a better gas-solid mixing reaction. However, the above structural scheme is prone to ash clogging and wear and corrosion problems under the condition of high sulfur and high humidity flue gas. At the same time, the structure is complex, the manufacturing and installation cost is high, and it is not easy to maintain. Summary of the invention
[0003] The embodiment of the present application provides a flue gas desulfurization reactor. It can solve the problems of ash clogging and wear and corrosion in the existing swirl structure, spoiler ring or bypass flue gas under high sulfur and high humidity flue gas conditions, as well as the problems of complex structure, high manufacturing and installation cost, and difficult maintenance. The technical solution is as follows:
[0004] In one aspect, a flue gas desulfurization reactor is provided, the flue gas desulfurization reactor comprising:
[0005] Inlet flue, venturi tube set and reaction flue;
[0006] The inlet flue has a first smoke inlet and a first smoke outlet which are arranged opposite to each other along the extension direction of the inlet flue;
[0007] The venturi tube group is distributed between the first smoke outlet and the smoke inlet of the reaction flue, and the venturi tube group comprises: two connectors and a plurality of venturi tubes, one connector is respectively sealed and connected to the smoke inlet of the reaction flue and the edges of the plurality of venturi tubes, and the other connector is respectively sealed and connected to the first smoke outlet and the edges of the plurality of venturi tubes;
[0008] Wherein, the multiple Venturi tubes include: a central Venturi tube and multiple edge Venturi tubes, the outlet of each edge Venturi tube is eccentrically arranged relative to the center of the edge Venturi tube, the center of the outlet of each edge Venturi tube is distributed on a target virtual circle, and the center of the outlet of each edge Venturi tube is rotated by a target angle along a target rotation direction relative to the center of the inlet of the corresponding edge Venturi tube; the target virtual circle is coaxially distributed with a circle enclosed by a center line connecting the inlets of the multiple edge Venturi tubes.
[0009] Optionally, the target angle at which the center of the outlet of each edge venturi tube rotates along the target rotation direction relative to the center of the inlet of the corresponding edge venturi tube is the same.
[0010] Optionally, the inlet and outlet of the edge venturi tube are both circular, and the edge venturi tube comprises: a first tube segment, a second tube segment and a third tube segment connected in sequence in a direction away from the first smoke outlet, the inner diameter of the first tube segment gradually decreases in a direction away from the first smoke outlet, the inner diameter of the second tube segment is the same, and the inner diameter of the third tube segment gradually increases in a direction away from the first smoke outlet; the center line of the first tube segment coincides with the center line of the second tube segment, the center of the outlet of the third tube segment has a first eccentricity P1 with the center line of the first tube segment, the inner diameter of the second tube segment is D1, and the inner diameter of the outlet of the third tube segment is D2;
[0011] Among them, 0.1D1≤P1≤0.5(D2-D1); the angle range value of the target angle is: 1 degree to 9 degrees.
[0012] Optionally, the smoke outlet of the reaction flue is arranged at the side of the end of the reaction flue; the flue gas desulfurization reactor further comprises: an outlet flue, the outlet flue being connected to the smoke outlet of the reaction flue;
[0013] Wherein, the end cover in the reaction flue, which is arranged opposite to the smoke inlet of the reaction flue, is in a convex shape.
[0014] Optionally, the reaction flue comprises: a reaction flue body and an end cover, wherein the reaction flue body is provided with the smoke inlet and the smoke outlet; the end cover is fixed at an opening in the reaction flue body that is arranged opposite to the smoke inlet;
[0015] Wherein, the end cover is in the shape of a cone, a pyramid, a truncated cone or a prism.
[0016] Optionally, the angle between the end cover and the plane where the opening of the reaction flue body arranged opposite to the smoke inlet is located is in a range of greater than 0 degrees and less than or equal to 7 degrees.
[0017] Optionally, the inner diameter of the reaction flue body is D3, and the distance between the outer side surface of the outlet flue and the top of the end cover along the axial direction of the reaction flue body is T;
[0018] Among them, 0.1D3≤T≤0.15D3.
[0019] Optionally, the inlet flue comprises: a spiral flue section and an absorbent mixing section which are interconnected, the absorbent mixing section is distributed between the spiral flue section and the venturi tube group, and the absorbent mixing section has an absorbent feeding trough; wherein, there is a second eccentricity P2 between the inlet and outlet of the spiral flue section.
[0020] Optionally, the inner diameters of the inlet and outlet of the spiral flue are the same, and the inner diameters of the inlet and outlet of the spiral flue are D4;
[0021] Among them, 0.5D4≤P2≤D4.
[0022] Optionally, the flue gas desulfurization reactor further comprises: a shrinking auxiliary pipe distributed between the venturi tube group and the inlet flue, an expanding auxiliary pipe distributed between the venturi tube group and the reaction flue, and an atomizing water gun fixed on the side of the expanding auxiliary pipe, wherein the atomizing water gun can spray atomized water into the expanding auxiliary pipe;
[0023] Wherein, the inner diameter of the shrinking auxiliary pipe gradually decreases in the direction away from the inlet flue; the inner diameter of the expanding auxiliary pipe gradually increases in the direction away from the venturi tube group.
[0024] The beneficial effects brought by the technical solution provided by the embodiment of the present application include at least:
[0025] A flue gas desulfurization reactor may include: an inlet flue, a venturi tube group and a reaction flue. The outlets of multiple edge venturi tubes in the venturi tube group are eccentrically arranged relative to the center of the venturi tube, and the center of the outlet of each edge venturi tube is rotated a certain angle along the target rotation direction on the target virtual circle relative to the center of the inlet of the corresponding edge venturi tube. In this way, the outlet eccentricity of multiple edge venturi tubes presents a circular rotation distribution, so that the flue gas and absorbent particles mixed by the inlet flue are sprayed obliquely, and a rotating spray effect is achieved through multiple eccentric outlets arranged in a circular rotation. And the swirling flue gas and absorbent particles can achieve a sufficient desulfurization reaction in the reaction flue. The above-mentioned flue gas desulfurization reactor does not need to set guide vanes, spoiler rings and other structures inside the reaction zone, thereby avoiding the sticking, clogging and corrosion wear of the absorbent material under the high-humidity and high-sulfur flue gas conditions of the melting furnace. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0027] Figure 1 It is a structural schematic diagram of a flue gas desulfurization reactor provided in an embodiment of the present application;
[0028] Figure 2 yes Figure 1 A schematic diagram of a venturi tube group is shown in FIG.
[0029] Figure 3 yes Figure 2 A top view of the venturi stack is shown;
[0030] Figure 4 It is a schematic diagram of another arrangement of a venturi tube provided in an embodiment of the present application;
[0031] Figure 5 is a schematic diagram of another venturi tube assembly provided in an embodiment of the present application;
[0032] Figure 6 is a schematic structural diagram of another flue gas desulfurization reactor provided in an embodiment of the present application;
[0033] Figure 7 It is a structural schematic diagram of a spiral flue section provided in an embodiment of the present application.
[0034] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0035] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.
[0036] 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 described embodiments are 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 creative work are within the scope of protection of the present invention.
[0037] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present invention. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
[0038] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 is a schematic structural diagram of a flue gas desulfurization reactor provided in an embodiment of the present application, Figure 2 yes Figure 1 A schematic diagram of a venturi tube set is shown in FIG. Figure 3 yes Figure 2The flue gas desulfurization reactor 000 may include: an inlet flue 100 , a venturi tube group 200 and a reaction flue 300 .
[0039] The inlet flue 100 in the flue gas desulfurization reactor 000 may have a first smoke inlet 101 and a first smoke outlet 102 which are arranged opposite to each other along the extension direction of the inlet flue 100 , and the first smoke inlet 101 and the first smoke outlet 102 may be connected to each other.
[0040] The venturi tube group 200 in the flue gas desulfurization reactor 000 can be distributed between the first smoke outlet 102 of the inlet flue 100 and the smoke inlet 301 of the reaction flue 300. The venturi tube group 200 can include: two connectors 201 and multiple venturi tubes 202, one connector 201 can be sealed and connected to the smoke inlet 301 of the reaction flue 300 and the edges of the multiple venturi tubes 202, and the other connector 201 can be sealed and connected to the first smoke outlet 102 of the inlet flue 100 and the edges of the multiple venturi tubes 202.
[0041] Among them, the multiple Venturi tubes 202 may include: a central Venturi tube A1 and multiple edge Venturi tubes A2, the outlet a1 of each edge Venturi tube A2 is eccentrically arranged relative to the center of this edge Venturi tube A2, the center of the outlet a1 of each edge Venturi tube A2 may be distributed on the target virtual circle Y, and the center of the outlet a1 of each edge Venturi tube A2 is rotated by a target angle α1 along the target rotation direction f relative to the center of the inlet b1 of this edge Venturi tube A2. Here, the target virtual circle Y may be coaxially distributed with the circle formed by the center connecting lines of the inlets b1 of multiple edge Venturi tubes A2. It should be noted that the target rotation direction f here may be counterclockwise or clockwise, Figure 3 The clockwise direction is used as an example for schematic illustration.
[0042] For example, the number of the central venturi tube A1 can be one, and the inlet b2 and outlet a2 of the central venturi tube A1 are arranged concentrically. The number of the edge venturi tubes A2 can be 6 or 9, which is not specifically limited in the present embodiment. Figure 4 , Figure 4 2 is another schematic diagram of the arrangement of venturi tubes provided in an embodiment of the present application. When a large number of venturi tubes 202 are required, at least two groups of edge venturi tubes A2 may be arranged along the radial direction of the venturi tube group 200 .
[0043] In the embodiment of the present application, the outlets a1 of the multiple edge venturi tubes A2 in the venturi tube group 200 are eccentrically arranged relative to the center of the edge venturi tube A2, and the center of the outlet a1 of each edge venturi tube A2 is rotated a certain angle along the target rotation direction f on the target virtual circle Y relative to the center of the inlet b1 of the corresponding edge venturi tube A2. In this way, the outlets a1 of the multiple edge venturi tubes A2 are eccentrically distributed in a circular rotation, so that the flue gas and absorbent particles mixed by the inlet flue 100 are sprayed obliquely, and the rotating spray effect is achieved through the multiple eccentric outlets a1 arranged in a circular rotation. And the swirling flue gas and absorbent particles can achieve a sufficient desulfurization reaction in the reaction flue 300. The above-mentioned flue gas desulfurization reactor 000 does not need to set guide vanes, spoiler rings and other structures inside the reaction zone, which avoids the sticking, clogging and corrosion wear of the absorbent material under the high-humidity and high-sulfur flue gas conditions of the melting furnace.
[0044] In summary, the embodiment of the present application provides a flue gas desulfurization reactor, which may include: an inlet flue, a venturi tube group and a reaction flue. The outlets of multiple edge venturi tubes in the venturi tube group are eccentrically arranged relative to the center of the venturi tube, and the center of the outlet of each edge venturi tube is rotated a certain angle along the target rotation direction on the target virtual circle relative to the center of the inlet of the corresponding edge venturi tube. In this way, the outlet eccentricity of multiple edge venturi tubes presents a circular rotation distribution, so that the flue gas and absorbent particles mixed by the inlet flue present an oblique injection, and a rotating injection effect is achieved through multiple eccentric outlets arranged in a circular rotation. And the swirling flue gas and absorbent particles can achieve a sufficient desulfurization reaction in the reaction flue. The above-mentioned flue gas desulfurization reactor does not need to set guide vanes, spoiler rings and other structures inside the reaction zone, thereby avoiding the sticking, clogging and corrosion wear of the absorbent material under the high-humidity and high-sulfur flue gas conditions of the melting furnace.
[0045] Optionally, the target angle α1 at which the center of the outlet a1 of each edge venturi tube A2 rotates relative to the center of the inlet b1 of the corresponding edge venturi tube A2 along the target rotation direction f can be the same. In this case, by setting the angle of rotation of the center of the outlet a1 of each edge venturi tube A2 relative to the center of the inlet b1 of this edge venturi tube A2 along the target rotation direction f to be the same, the swirl flue gas injected obliquely from the venturi tube group 200 is made more uniform, thereby ensuring a better desulfurization reaction effect between the swirl flue gas and the absorbent particles in the reaction flue 300. It should be noted that in other possible implementations, the target angle α1 at which the center of the outlet a1 of two adjacent edge venturi tubes A2 rotates relative to the center of the inlet b1 of the corresponding edge venturi tube A2 along the target rotation direction f can also be different.
[0046] In the examples of this application, please refer to Figure 5 , Figure 5 Schematic diagram of another venturi tube group provided by an embodiment of the present application. The inlet b1 and outlet a1 of each edge venturi tube A2 may be circular. The edge venturi tube A2 may include: a first tube segment A21, a second tube segment A22 and a third tube segment A23 connected in sequence in a direction away from the first smoke outlet 102 of the inlet flue 100, the inner diameter of the first tube segment A21 gradually decreases in a direction away from the first smoke outlet 102, the inner diameter of each part of the second tube segment A22 is the same, and the inner diameter of the third tube segment A23 gradually increases in a direction away from the first smoke outlet 102. The center line of the first tube segment A21 coincides with the center line of the second tube segment A22, the center of the outlet a1 of the third tube segment A23 has a first eccentricity P1 with the center line of the first tube segment A21, the inner diameter of the second tube segment A22 is D1, and the inner diameter of the outlet a1 of the third tube segment A23 is D2. The first eccentricity P1 between the center of the outlet a1 of the third pipe segment A23 and the center line of the first pipe segment A21, the inner diameter D1 of the second pipe segment A22, and the inner diameter D2 of the outlet a1 of the third pipe segment A23 can satisfy the following relationship: 0.1D1≤P1≤0.5(D2-D1). The angle range value of the target angle α1 of the center of the outlet a1 of each edge venturi tube A2 rotated relative to the center of the inlet b1 of the corresponding edge venturi tube A2 along the target rotation direction can be: 1 degree to 9 degrees.
[0047] In this case, by making the first eccentricity P1 between the center of the outlet of the edge venturi tube and the center line of the first pipe section and the second pipe section satisfy the above relationship, the oblique injection effect of the venturi tube group is ensured to be better, thereby ensuring a better desulfurization reaction effect between the swirling flue gas and the absorbent particles in the reaction flue 300.
[0048] It should be noted that the inlet of the first pipe segment A21 in the edge venturi pipe A2 is the inlet b1 of the edge venturi pipe A2, and the outlet a1 of the third pipe segment A23 in the edge venturi pipe A2 is the outlet a1 of the edge venturi pipe A2. The orthographic projection of the outlet a1 of the third pipe segment A23 on the plane where the inlet b1 of the first pipe segment A21 is located can cover the area where the inlet b1 is located.
[0049] Optional, please refer to Figure 6 , Figure 6It is a structural schematic diagram of another flue gas desulfurization reactor provided in an embodiment of the present application. The smoke outlet 302 of the reaction flue 300 is arranged at the side of the end of the reaction flue 300. The flue gas desulfurization reactor 000 may also include: an outlet flue 400, which can be connected to the smoke outlet 302 of the reaction flue 300. Among them, the end cover 303 in the reaction flue 300 that is arranged opposite to the smoke inlet 301 of the reaction flue 300 is convex. In this case, by setting the end cover in the reaction flue that is arranged opposite to the smoke inlet of the reaction flue to be convex, a part of the flue gas and absorbent particles will flow back into the reaction flue under the action of the end cover and will not be directly discharged from the outlet flue, thereby ensuring the full reaction and utilization of the absorbent particles.
[0050] It should be noted that the end of the reaction flue 300 is the end of the reaction flue 300 away from the venturi tube assembly 200 .
[0051] In this application, if Figure 6 As shown, the reaction flue 300 may include: a reaction flue body 304 and an end cover 303, wherein the reaction flue body 304 is provided with a smoke inlet 301 and a smoke outlet 302 of the reaction flue 300, and the end cover 303 may be fixed at an opening in the reaction flue body 304 that is arranged opposite to the smoke inlet 301, wherein the shape of the end cover 303 may be conical, pyramidal, truncated cone or prism-shaped.
[0052] For example, the angle α2 between the end cover 303 and the plane where the opening of the reaction flue body 304 arranged opposite to the smoke inlet 301 is located can be in the range of greater than 0 degree and less than or equal to 7 degrees.
[0053] In the embodiment of the present application, the inner diameter of the reaction duct body 304 may be D3, and the distance between the outer side of the outlet flue 400 and the top of the end cover 303 along the axial direction of the reaction duct body 304 may be T. The inner diameter D3 of the reaction duct body 304 and the distance T may satisfy the following relationship:
[0054] 0.1D3≤T≤0.15D3.
[0055] In this case, by making the inner diameter D3 of the reaction flue body 304 and the distance T satisfy the above relationship, the flue gas and absorbent particles after the reaction can be mostly discharged from the smoke outlet and the outlet flue of the reaction flue, and a part of the flue gas and absorbent particles can flow back into the reaction flue under the action of the end cover instead of being directly discharged from the outlet flue, so as to ensure the full reaction and utilization of the absorbent particles.
[0056] Optional, please refer to Figure 6 and Figure 7 , Figure 7It is a structural schematic diagram of a spiral flue section provided in an embodiment of the present application. The inlet flue 100 may include: a spiral flue section 103 and an absorbent mixing section 104 that are interconnected, the absorbent mixing section 104 may be distributed between the spiral flue section 103 and the venturi tube group 200, and the absorbent mixing section 104 has an absorbent feeding trough 104a. Among them, there may be a second eccentricity P2 between the inlet c1 and the outlet c2 of the spiral flue section 103. In this case, by arranging the spiral flue section 103 in the inlet flue, the flue gas enters the absorbent mixing section 104 through the spiral flue section 103, and the swirling flue gas promotes the diffusion of absorbent particles to achieve a preliminary desulfurization reaction.
[0057] It should be noted that the inlet c1 of the spiral flue section 103 may be the first smoke inlet 101 of the inlet flue 100 , and the outlet of the absorbent mixing section 104 may be the first smoke outlet 102 of the inlet flue 100 .
[0058] For example, Figure 6 and Figure 7 As shown, the inlet c1 of the spiral flue section 103 and the outlet c2 of the spiral flue section 103 have the same inner diameter, and the inner diameters of the inlet c1 of the spiral flue section 103 and the outlet c2 of the spiral flue section 103 can both be D4. Among them, the second eccentricity P2 between the inlet c1 of the spiral flue section 103 and the outlet c2 of the spiral flue section 103 and the inner diameter D4 of the inlet c1 and the outlet c2 of the spiral flue section 103 can satisfy the following relationship: 0.5D4≤P2≤D4.
[0059] In the embodiments of the present application, Figure 6 As shown, the flue gas desulfurization reactor 000 may also include: a shrinking auxiliary pipe 500 distributed between the venturi tube group 200 and the inlet flue 100, an expanding auxiliary pipe 600 distributed between the venturi tube group 200 and the reaction flue 300, and an atomizing water gun 700 fixed at the side of the expanding auxiliary pipe 600, and the atomizing water gun 700 can spray atomized water into the expanding auxiliary pipe 600. Among them, the inner diameter of the shrinking auxiliary pipe 500 can be gradually reduced in the direction away from the inlet flue 100; the inner diameter of the expanding auxiliary pipe 600 can be gradually increased in the direction away from the venturi tube group 200. In this case, the shrinking auxiliary pipe 500 helps to enhance the flow rate of the flue gas and the mixing effect with the absorbent particles. Spraying atomized water in the expanding auxiliary pipe 600 allows the flue gas and the absorbent particles to achieve a full desulfurization reaction in this area.
[0060] In summary, the embodiment of the present application provides a flue gas desulfurization reactor, which may include: an inlet flue, a venturi tube group and a reaction flue. The outlets of multiple edge venturi tubes in the venturi tube group are eccentrically arranged relative to the center of the venturi tube, and the center of the outlet of each edge venturi tube is rotated a certain angle along the target rotation direction on the target virtual circle relative to the center of the inlet of the corresponding edge venturi tube. In this way, the outlet eccentricity of multiple edge venturi tubes presents a circular rotation distribution, so that the flue gas and absorbent particles mixed by the inlet flue present an oblique injection, and a rotating injection effect is achieved through multiple eccentric outlets arranged in a circular rotation. And the swirling flue gas and absorbent particles can achieve a sufficient desulfurization reaction in the reaction flue. The above-mentioned flue gas desulfurization reactor does not need to set guide vanes, spoiler rings and other structures inside the reaction zone, thereby avoiding the sticking, clogging and corrosion wear of the absorbent material under the high-humidity and high-sulfur flue gas conditions of the melting furnace.
[0061] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.
[0062] The above description is only an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A flue gas desulfurization reactor, characterized in that: include: Inlet flue, venturi tube set and reaction flue; The inlet flue has a first smoke inlet and a first smoke outlet which are arranged opposite to each other along the extension direction of the inlet flue; The venturi tube group is distributed between the first smoke outlet and the smoke inlet of the reaction flue, and the venturi tube group comprises: two connectors and a plurality of venturi tubes, one connector is respectively sealed and connected to the smoke inlet of the reaction flue and the edges of the plurality of venturi tubes, and the other connector is respectively sealed and connected to the first smoke outlet and the edges of the plurality of venturi tubes; Wherein, the multiple Venturi tubes include: a central Venturi tube and multiple edge Venturi tubes, the outlet of each edge Venturi tube is eccentrically arranged relative to the center of the edge Venturi tube, the center of the outlet of each edge Venturi tube is distributed on a target virtual circle, and the center of the outlet of each edge Venturi tube is rotated by a target angle along a target rotation direction relative to the center of the inlet of the corresponding edge Venturi tube; the target virtual circle is coaxially distributed with a circle enclosed by a center line connecting the inlets of the multiple edge Venturi tubes.
2. The flue gas desulfurization reactor according to claim 1, characterized in that: The target angle at which the center of the outlet of each edge venturi tube rotates in the target rotation direction relative to the center of the inlet of the corresponding edge venturi tube is the same.
3. The flue gas desulfurization reactor according to claim 1 or 2, characterized in that: The inlet and outlet of the edge venturi tube are both circular, and the edge venturi tube comprises: a first tube section, a second tube section and a third tube section which are sequentially connected in a direction away from the first smoke outlet, the inner diameter of the first tube section gradually decreases in a direction away from the first smoke outlet, the inner diameter of the second tube section is the same, and the inner diameter of the third tube section gradually increases in a direction away from the first smoke outlet; the center line of the first tube section coincides with the center line of the second tube section, the center of the outlet of the third tube section has a first eccentricity P1 with the center line of the first tube section, the inner diameter of the second tube section is D1, and the inner diameter of the outlet of the third tube section is D2; Among them, 0.1D1≤P1≤0.5(D2-D1); the angle range value of the target angle is: 1 degree to 9 degrees.
4. The flue gas desulfurization reactor according to claim 1, characterized in that: The smoke outlet of the reaction flue is arranged at the side of the end of the reaction flue; the flue gas desulfurization reactor further comprises: an outlet flue, the outlet flue is connected with the smoke outlet of the reaction flue; Wherein, the end cover in the reaction flue, which is arranged opposite to the smoke inlet of the reaction flue, is in a convex shape.
5. The flue gas desulfurization reactor according to claim 4, characterized in that: The reaction flue comprises: a reaction flue body and an end cover, wherein the reaction flue body is provided with the smoke inlet and the smoke outlet; the end cover is fixed at an opening in the reaction flue body that is arranged opposite to the smoke inlet; Wherein, the end cover is in the shape of a cone, a pyramid, a truncated cone or a prism.
6. The flue gas desulfurization reactor according to claim 5, characterized in that: The angle between the end cover and the plane where the opening of the reaction flue body arranged opposite to the smoke inlet is located is in the range of greater than 0 degrees and less than or equal to 7 degrees.
7. The flue gas desulfurization reactor according to claim 6, characterized in that: The inner diameter of the reaction flue body is D3, and the distance between the outer side surface of the outlet flue and the top of the end cover along the axial direction of the reaction flue body is T; Among them, 0.1D3≤T≤0.15D3.
8. The flue gas desulfurization reactor according to any one of claims 1-2 and 4-7, characterized in that: The inlet flue comprises: a spiral flue section and an absorbent mixing section which are interconnected, wherein the absorbent mixing section is distributed between the spiral flue section and the venturi tube group, and the absorbent mixing section has an absorbent feeding trough; wherein a second eccentricity P2 is provided between the inlet and the outlet of the spiral flue section.
9. The flue gas desulfurization reactor according to claim 8, characterized in that: The inner diameters of the inlet and outlet of the spiral flue are the same, and the inner diameters of the inlet and outlet of the spiral flue are D4; Among them, 0.5D4≤P2≤D4.
10. The flue gas desulfurization reactor according to claim 8, characterized in that: The flue gas desulfurization reactor further comprises: a shrinking auxiliary pipe distributed between the venturi tube group and the inlet flue, an expanding auxiliary pipe distributed between the venturi tube group and the reaction flue, and an atomizing water gun fixed on the side of the expanding auxiliary pipe, wherein the atomizing water gun can spray atomized water into the expanding auxiliary pipe; Wherein, the inner diameter of the shrinking auxiliary pipe gradually decreases in the direction away from the inlet flue; the inner diameter of the expanding auxiliary pipe gradually increases in the direction away from the venturi tube group.