Converter for preparing sulfuric acid

Abstract

The utility model provides a converter for preparing sulfuric acid, which belongs to the technical field of sulfuric acid production, and comprises a tower body, catalyst bed layers, an air inlet pipeline, a guide plate, a guide plate, a swing plate and an elastic reset piece, the guide plate is mounted between the two catalyst bed layers and is obliquely arranged, and a plurality of vent holes are formed in the guide plate; one end of the guide plate is fixedly connected to the flow guide plate, and the other end of the guide plate extends outwards; the lower end of the swing plate is hinged to the guide plate, and the upper end of the swing plate abuts against the other end of the guide plate; the elastic reset piece is installed on the flow guide plate and connected with the swing plate. According to the converter for preparing sulfuric acid provided by the utility model, gas enters the tower body from the upper part of the catalyst bed layer by virtue of the guide plate and the swing plate, and does not directly impact on a catalyst, so that sulfur dioxide and the catalyst are fully contacted to generate catalytic oxidation reaction, and the catalytic oxidation effect of the sulfur dioxide is improved.

Description

Technical Field

[0001] This utility model belongs to the field of sulfuric acid production technology, and more specifically, it relates to a converter for preparing sulfuric acid. Background Technology

[0002] In the contact process for sulfuric acid production, the converter is one of the core pieces of equipment, responsible for the catalytic oxidation of sulfur dioxide to sulfur trioxide. Its performance directly affects the yield, energy consumption, and emission standards of sulfuric acid. The converter needs to achieve synergistic operation of multiple catalytic reactions and efficient heat exchange to efficiently convert sulfur dioxide into sulfur trioxide. Currently, when sulfur dioxide and oxygen are added to the converter tower, the high gas velocity impacts the catalyst in the catalyst bed, affecting the effective contact reaction between the catalyst and sulfur dioxide, thus reducing the catalytic oxidation effect of sulfur dioxide. Utility Model Content

[0003] The purpose of this invention is to provide a converter for preparing sulfuric acid, so as to solve the technical problem in the prior art that the effective contact reaction between the catalyst and sulfur dioxide is insufficient, resulting in a reduction in the catalytic oxidation effect of sulfur dioxide.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a converter for preparing sulfuric acid, comprising a tower body and multiple catalyst beds, wherein multiple air inlet pipes are provided on the side wall of the tower body, and further comprising:

[0005] A guide plate is installed between two adjacent catalyst beds and corresponds to the air inlet pipe; the guide plate is inclined and its lower end is fixedly installed on the inner wall of the tower; the guide plate is provided with a plurality of ventilation holes arranged through the thickness direction;

[0006] The guide plate is arranged horizontally, with one end fixedly connected to the upper end of the guide plate, and the other end extending in a direction away from the guide plate.

[0007] A swing plate is located on the side of the guide plate away from the intake pipe; the lower end of the swing plate is hinged to the lower end of the guide plate, and the upper end abuts against the other end of the guide plate.

[0008] An elastic reset component is mounted on the guide plate and connected to the swing plate, used to drive the swing plate to reset so as to abut against the guide plate.

[0009] In one possible implementation, the guide plate has two upwardly extending bent plates on both sides, and both bent plates are set at an obtuse angle to the guide plate.

[0010] In one possible implementation, the bending plate, the guide plate, and the guide plate are integrally formed.

[0011] In one possible implementation, the connection points of the bending plate, the guide plate, and the flow deflector are all arc-shaped structures.

[0012] In one possible implementation, a plurality of the vent holes are arranged in an array on the upper region of the guide plate.

[0013] In one possible implementation, the other end of the guide plate has a first mating surface on its lower side, and the upper end of the swing plate has a second mating surface that matches the first mating surface.

[0014] In one possible implementation, the guide plate is provided with two mounting seats, each of which has a connection hole; the lower end of the swing plate is provided with a rotating shaft on both sides, and the rotating shaft is rotatably connected to the corresponding connection hole; the elastic reset member is a torsion spring fitted on the rotating shaft, and the two ends of the torsion spring are respectively connected to the rotating shaft and the mounting seat.

[0015] In one possible implementation, the tower body is provided with an installation groove on the inner wall, an operation groove on the outer wall, and an installation hole connecting the installation groove and the operation groove; the lower end of the guide plate is provided with an installation block for installation in the installation groove, one side of the installation block is provided with a connecting shaft rotatably connected to the installation hole, and the end of the connecting shaft away from the installation block is located in the operation groove; the operation groove is provided with fasteners for detachably connecting the connecting shaft to the tower body.

[0016] In one possible implementation, the connecting shaft is provided with a smooth shaft section and a threaded shaft section. The smooth shaft section is rotatably connected to the mounting hole, and the end of the threaded shaft section is located in the operating groove. The fastener is a nut connected to the threaded shaft section.

[0017] In one possible implementation, the threaded shaft segment is provided with a transmission groove for driving the guide plate to rotate.

[0018] The beneficial effects of the sulfuric acid converter provided by this utility model are as follows: Compared with the prior art, in the sulfuric acid converter of this utility model, when the mixed gas such as sulfur dioxide enters the tower body from the inlet pipe, it will first impact the guide plate. Since the guide plate is arranged at an angle, a part of the gas will flow along the angle of the guide plate. Furthermore, the guide plate located at the upper end of the guide plate, with one end fixedly connected to the guide plate and the other end extending in a direction away from the guide plate, further guides the gas, allowing the gas to flow more smoothly into the tower body. Another portion of the gas passes through the vent holes and disperses through the guide plate, while simultaneously impacting the swing plate. Under the hinged connection between the swing plate and the guide plate and the action of the elastic reset element, the swing plate moves outward relative to the guide plate, causing the gas to overflow outward through the gap between the swing plate and the guide plate, further changing the gas flow state and position. In this way, with the help of the guide plate and the swing plate, the gas enters the tower body above the catalyst bed, without directly impacting the catalyst, thus ensuring that sulfur dioxide and the catalyst are in full contact for catalytic oxidation, thereby improving the catalytic oxidation effect of sulfur dioxide. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A partial schematic diagram of a converter for preparing sulfuric acid provided in an embodiment of this utility model. Figure 1 ;

[0021] Figure 2 A schematic diagram of the structure of the guide plate and the flow deflector provided in the embodiment of this utility model;

[0022] Figure 3 A schematic diagram of the structure of the guide plate, the guide plate and the swing plate provided in the embodiment of this utility model;

[0023] Figure 4 A connection diagram of the swing plate, elastic reset component and mounting base provided in an embodiment of this utility model;

[0024] Figure 5 A partial schematic diagram of a converter for preparing sulfuric acid provided in an embodiment of this utility model. Figure 2 ;

[0025] Figure 6 A schematic diagram showing the connection of the guide plate, connecting shaft, and fasteners provided in an embodiment of this utility model.

[0026] The following are the labeling elements in the figure:

[0027] 10. Tower body; 11. Catalyst bed; 12. Inlet pipe; 13. Operating slot; 14. Mounting hole; 20. Guide plate; 21. Vent hole; 22. Bending plate; 23. Arc structure; 24. Mounting base; 30. Guide plate; 40. Swing plate; 41. Rotating shaft; 50. Elastic reset component; 60. Connecting shaft; 61. Smooth shaft section; 62. Threaded shaft section; 63. Transmission slot; 70. Fastener. Detailed Implementation

[0028] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0030] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0031] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] Please see Figures 1 to 6The present invention provides a converter for preparing sulfuric acid. A converter for preparing sulfuric acid includes a tower body 10 and multiple catalyst beds 11. Multiple air inlet pipes 12 are provided on the side wall of the tower body 10. It also includes a guide plate 20, a guide plate 30, a swing plate 40, and an elastic reset member 50. The guide plate 20 is installed between two adjacent catalyst beds 11 and corresponds to the air inlet pipes 12. The guide plate 20 is inclined and its lower end is fixedly installed on the inner wall of the tower body 10. Multiple through-holes are provided on the guide plate 20 along its thickness direction. Vent hole 21; guide plate 30 is horizontally arranged, with one end fixedly connected to the upper end of guide plate 20 and the other end extending in a direction away from guide plate 20; swing plate 40 is located on the side of guide plate 20 away from intake pipe 12; the lower end of swing plate 40 is hinged to the lower end of guide plate 20, and the upper end abuts against the other end of guide plate 30; elastic reset member 50 is installed on guide plate 20 and connected to swing plate 40, used to drive swing plate 40 to reset so as to abut against guide plate 30.

[0033] The converter for sulfuric acid production provided by this utility model, compared with the prior art, allows the mixed gas, including sulfur dioxide, to first impact the guide plate 20 after entering the tower body 10 from the inlet pipe 12. Since the guide plate 20 is arranged at an angle, some of the gas flows along the angle of the guide plate 20. Furthermore, the guide plate 30 located at the upper end of the guide plate 20, with one end fixedly connected to the guide plate 20 and the other end extending away from the guide plate 20, further guides the gas, allowing it to flow more smoothly into the tower body 10. Another portion of the gas passes through the guide plate 20 in a dispersed manner through the vent 21, and simultaneously impacts the swing plate 40. Under the hinged connection between the swing plate 40 and the guide plate 20 and the action of the elastic reset member 50, the swing plate 40 moves outward relative to the guide plate 20, causing the gas to overflow outward through the gap between the swing plate 40 and the guide plate 20, further changing the gas flow state and position. In this way, with the help of the guide plate 20 and the swing plate 40, the gas enters the tower body 10 above the catalyst bed 11, without directly impacting the catalyst, so as to ensure that sulfur dioxide and the catalyst are in full contact and undergo catalytic oxidation reaction, thereby improving the catalytic oxidation effect of sulfur dioxide.

[0034] The swing plate 40 can reduce the direct impact force on the guide plate 20, thereby ensuring that the guide plate 20 works stably and reliably.

[0035] Please see Figure 1In one specific embodiment of the converter for preparing sulfuric acid provided by this utility model, two upwardly extending bent plates 22 are provided on both sides of the guide plate 20. Both bent plates 22 are set at obtuse angles to the guide plate 20. The two bent plates 22 provide a certain enclosing and confining effect to the guide plate 20, causing gas to accumulate on the guide plate 20 and flow smoothly forward and upward, thus achieving a better guiding effect. The obtuse angle between the two bent plates 22 and the guide plate 20 increases the overall width of the guide plate 20, without obstructing gas flow.

[0036] Please see Figures 1 to 3 As a specific embodiment of the converter for preparing sulfuric acid provided by this utility model, the bending plate 22, the guide plate 20, and the guide plate 30 are integrally formed; this increases the connection strength and load-bearing capacity between the bending plate 22, the guide plate 20, and the guide plate 30, enabling them to maintain a stable shape in complex environments and effectively guide the flow direction of the fluid; it also better resists the impact and vibration of external forces. During installation, the integrally formed structure makes installation simpler and faster, eliminating the need for cumbersome splicing steps and greatly saving installation time and labor costs.

[0037] Please see Figure 2 As a specific embodiment of the converter for preparing sulfuric acid provided by this utility model, the connection between the bending plate 22, the guide plate 30 and the flow guide plate 20 is a circular arc structure 23; when the gas flows through, there will be no sharp corner obstruction, and it can flow smoothly along the designed path, reducing the energy loss in the gas flow process.

[0038] Please see Figures 1 to 3 In one specific embodiment of the converter for preparing sulfuric acid provided by this utility model, multiple vent holes 21 are arranged in an array on the upper side of the guide plate 20. In this way, the gas entering between the guide plate 20 and the swing plate 40 can be closer to the gap formed between them and thus be smoothly discharged. Furthermore, the torque generated by the gas acting on the upper side of the guide plate 20 is relatively large, and the impact force on the guide plate 20 is also reduced by the multiple vent holes 21.

[0039] Please see Figure 1 and Figure 2 As a specific embodiment of the converter for preparing sulfuric acid provided by this utility model, the other end of the guide plate 30 is provided with a first mating surface, and the upper end of the swing plate 40 is provided with a second mating surface that is compatible with the first mating surface. When the gas does not enter the tower body 10, the upper end of the swing plate 40 and the upper end of the guide plate 30 are accurately and tightly connected by the cooperation of the first mating surface and the second mating surface.

[0040] Please see Figures 1 to 4 As a specific embodiment of the converter for preparing sulfuric acid provided by this utility model, the guide plate 20 is provided with two mounting seats 24, each with a connecting hole; the lower end of the swing plate 40 is provided with two rotating shafts 41, and the rotating shafts 41 are rotatably connected to the corresponding connecting holes; the elastic reset member 50 is a torsion spring fitted on the rotating shaft 41, and the two ends of the torsion spring are respectively connected to the rotating shaft 41 and the mounting seat 24; during installation, the rotating shafts 41 at the lower end of the swing plate 40 are respectively connected into the two connecting holes, and the torsion spring is installed on the two rotating shafts 41. When the swing plate 40 is subjected to the impact force of gas and swings, the torsion spring will produce a corresponding elastic deformation. When the external force disappears, the torsion spring, with its own elastic reset force, drives the swing plate 40 to swing in the opposite direction, so that it returns to its initial position. The two mounting seats 24 make the swing plate 40 stable to install, and the rotation process is also relatively smooth.

[0041] Please see Figure 5 and Figure 6 As a specific embodiment of the converter for preparing sulfuric acid provided by this utility model, the tower body 10 is provided with an installation groove on the inner wall, an operation groove 13 on the outer wall, and an installation hole 14 connecting the installation groove and the operation groove 13; the lower end of the guide plate 20 is provided with an installation block for installation in the installation groove, and one side of the installation block is provided with a connecting shaft 60 rotatably connected to the installation hole 14, and the end of the connecting shaft 60 away from the installation block is located in the operation groove 13; the operation groove 13 is provided with a fastener 70 for detachably connecting the connecting shaft 60 to the tower body 10; during installation, the lower end of the guide plate 20 is fitted into the installation groove, and the connecting shafts 60 on both sides of its lower end are respectively inserted into the two installation holes 14 so that the ends of the connecting shafts 60 enter the operation groove 13. Since the operation groove 13 is located on the outer wall of the tower body 10, the operator uses the fastener 70 to install on the connecting shaft 60 to achieve a fixed connection between the connecting shaft 60 and the tower body 10. Simultaneously, seals are installed in the connecting shaft 60 and the mounting groove to ensure good sealing of the tower body 10. When it is necessary to adjust the tilt angle of the guide plate 20, the fastener 70 is opened to adjust the mounting angle of the connecting shaft 60 in the mounting hole 14, thereby changing the angle of the guide plate 20. Finally, the fastener 70 is used to fix the connecting shaft 60. A sealing plate for sealing the operating groove 13 is provided on the outer wall of the tower body 10, and the sealing plate is detachably connected to the tower body 10.

[0042] Please see Figure 2 , Figure 5 and Figure 6As a specific embodiment of the converter for preparing sulfuric acid provided by this utility model, the connecting shaft 60 is provided with a smooth shaft section 61 and a threaded shaft section 62. The smooth shaft section 61 is rotatably connected to the mounting hole 14, and the end of the threaded shaft section 62 is located in the operating groove 13. The fastener 70 is a nut connected to the threaded shaft section 62. When the connecting shaft 60 is installed in the mounting hole 14, the smooth shaft section 61 forms a rotatable connection with the mounting hole 14, while the threaded shaft section 62 passes through the mounting hole 14 and enters the operating groove 13. Preferably, the fastener 70 is a nut, which is located in the operating groove 13 and threadedly connected to the threaded shaft section 62 to fix the connecting shaft 60.

[0043] Please see Figure 6 In one specific embodiment of the converter for preparing sulfuric acid provided by this utility model, the threaded shaft section 62 is provided with a transmission groove 63 for driving the guide plate 20 to rotate. When adjusting the installation angle of the guide plate 20 by loosening the fastener 70, one end of the operating rod is inserted into the transmission groove 63, and the operating rod is used as a lever arm to control the rotation of the connecting shaft 60. The transmission groove 63 is set to be circular or rectangular. Preferably, there are one to three transmission grooves 63.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A converter for preparing sulfuric acid, comprising a tower body and multiple catalyst beds, wherein multiple gas inlet pipes are provided on the side wall of the tower body, characterized in that, Also includes: A guide plate is installed between two adjacent catalyst beds and corresponds to the air inlet pipe; the guide plate is inclined and its lower end is fixedly installed on the inner wall of the tower; the guide plate is provided with a plurality of ventilation holes arranged through the thickness direction; The guide plate is arranged horizontally, with one end fixedly connected to the upper end of the guide plate, and the other end extending in a direction away from the guide plate. A swing plate is located on the side of the guide plate away from the intake pipe; the lower end of the swing plate is hinged to the lower end of the guide plate, and the upper end abuts against the other end of the guide plate. An elastic reset component is mounted on the guide plate and connected to the swing plate, used to drive the swing plate to reset so as to abut against the guide plate.

2. The converter for preparing sulfuric acid as described in claim 1, characterized in that, The guide plate has two upward-extending bent plates on both sides, and both bent plates are set at an obtuse angle to the guide plate.

3. The converter for preparing sulfuric acid as described in claim 2, characterized in that, The bending plate, the guide plate, and the guide plate are integrally formed.

4. The converter for preparing sulfuric acid as described in claim 2, characterized in that, The connection points of the bending plate, the guide plate, and the flow deflector are all arc-shaped structures.

5. The converter for preparing sulfuric acid as described in claim 1, characterized in that, Multiple ventilation holes are arranged in an array on the upper side of the guide plate.

6. The converter for preparing sulfuric acid as described in claim 1, characterized in that, The guide plate has a first mating surface on its lower side at the other end, and the swing plate has a second mating surface on one side at its upper end that is adapted to the first mating surface.

7. The converter for preparing sulfuric acid as described in claim 1, characterized in that, The guide plate is provided with two mounting seats, each of which has a connection hole; the lower end of the swing plate is provided with a rotating shaft on both sides, and the rotating shaft is rotatably connected to the corresponding connection hole; the elastic reset component is a torsion spring fitted on the rotating shaft, and the two ends of the torsion spring are respectively connected to the rotating shaft and the mounting seat.

8. The converter for preparing sulfuric acid as described in claim 1, characterized in that, The tower body is provided with an installation groove on the inner wall, an operation groove on the outer wall, and an installation hole connecting the installation groove and the operation groove; the lower end of the guide plate is provided with an installation block for installation in the installation groove, one side of the installation block is provided with a connecting shaft rotatably connected to the installation hole, and the end of the connecting shaft away from the installation block is located in the operation groove; the operation groove is provided with fasteners for detachably connecting the connecting shaft to the tower body.

9. The converter for preparing sulfuric acid as described in claim 8, characterized in that, The connecting shaft is provided with a smooth shaft section and a threaded shaft section. The smooth shaft section is rotatably connected to the mounting hole, and the end of the threaded shaft section is located in the operating groove. The fastener is a nut connected to the threaded shaft section.

10. The converter for preparing sulfuric acid as described in claim 9, characterized in that, The threaded shaft section is provided with a transmission groove for driving the guide plate to rotate.

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