A fixed-bed reactor for maleic anhydride production

Abstract

This utility model relates to the technical field of reaction devices, specifically to a fixed-bed reactor for maleic anhydride production. The reactor includes a reaction device with a connecting pipe and a conveying pipe fixedly connected to its top. A filter assembly is connected to the bottom of the conveying pipe. An external connecting frame is fixedly connected between the filter assembly and the reaction device. The filter assembly includes an upper and lower matching detection box and a filter box. The filter box has an inner cavity and a partition cavity. The filter plate achieves secondary filtration and purification of the filtered waste gas. An auxiliary rod, in conjunction with its upper guide protrusion, assists in guiding the filtered waste gas. A downwardly inclined lower auxiliary protrusion accelerates the filtration of the waste gas entering the filtrate.

Description

Technical Field

[0001] This utility model relates to the technical field of reaction devices, specifically to a fixed-bed reactor for maleic anhydride production. Background Technology

[0002] The fixed-bed reactor for the oxidation of n-butane to maleic anhydride is an auxiliary device used in the reaction of n-butane to maleic anhydride, and it is widely used in the field of reaction equipment. Currently, in order to effectively treat the waste gas generated during the reaction process, most fixed-bed reactors for n-butane to maleic anhydride production simultaneously discharge the waste gas into a filter tank containing filtrate for treatment. In the treatment process, the waste gas is first drawn into the filtrate in the filter tank through a conveying pipeline, then the filtrate adsorbs and decomposes the harmful substances in the waste gas, and finally the filtered clean gas is discharged through an exhaust pipe. The problem with this method is:

[0003] This treatment method, which involves contact with the filtrate, has a poor effect on the decomposition and filtration of waste gas, and the treatment effect needs to be improved. Furthermore, when the waste gas is introduced into the filter tank, it cannot effectively detect and handle waste gas leaks. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a fixed-bed reactor for maleic anhydride production, which can solve the following problems:

[0005] This treatment method, which involves contact with the filtrate, has a poor effect on the decomposition and filtration of waste gas, and the treatment effect needs to be improved. Furthermore, it cannot effectively detect and handle waste gas leaks when the waste gas is introduced into the filter tank.

[0006] To solve the above-mentioned technical problems, the present invention proposes the following technical solution:

[0007] A fixed-bed reactor for maleic anhydride production includes a reaction apparatus. A transfer pipe and a delivery pipe are fixedly connected to the top of the reaction apparatus. A filter assembly is connected to the bottom of the delivery pipe. An external connecting frame is fixedly connected between the filter assembly and the reaction apparatus. The filter assembly includes a detection box and a filter box arranged vertically. The filter box has an inner cavity and a partition cavity. A sealing groove is formed at the top of the detection box, and a sealing ring is embedded in the sealing groove. A sealing gasket is fitted between the sealing ring and the sealing groove. A detection mechanism is embedded at the top of the detection box. A filter plate is fixedly connected to the top of the inner cavity. An auxiliary rod is fixedly connected to the bottom of the filter plate. An upper guide protrusion and a lower auxiliary protrusion are fixedly connected to the surface of the auxiliary rod. A guide mechanism, a fixing frame, and an exhaust pipe are fixedly connected above the filter plate.

[0008] Furthermore, the testing box and the filter box are arranged as an integrated unit, separated by a partition. The testing box is trapezoidal in shape, and the delivery pipe runs vertically through the testing box and is embedded in the filter box.

[0009] Furthermore, the sealing ring is embedded in the sealing groove through a sealing gasket, and the sealing ring is also sleeved with the delivery pipe.

[0010] Furthermore, the filter plate is arranged horizontally in a rectangular shape, and the auxiliary rod is arranged vertically. There are 2-4 sets of auxiliary rods distributed along the bottom surface of the filter plate. The upper guide protrusion is arranged upwardly along one side of the top surface of the auxiliary rod, while the lower auxiliary protrusion is arranged downwardly along the bottom surface of the auxiliary rod.

[0011] Furthermore, the partition cavity is fan-shaped and located on one side of the top of the inner cavity, separating it from the inner cavity.

[0012] Furthermore, the mounting bracket is horizontally positioned as a whole, with the exhaust pipe and the flow guiding mechanism fixedly connected to its two ends respectively. The exhaust pipe is also sealed in the partition cavity, while the flow guiding mechanism is a fan mechanism located above the filter plate.

[0013] As can be seen from the above technical solution, the beneficial effects of this utility model are:

[0014] 1. This utility model achieves the effect of ensuring the airtightness of gas transmission by using a detection box in conjunction with a sealing ring and a sealing gasket on its top, thus preventing premature leakage of waste gas. The filter box achieves the effect of filtering the gas transported from the reaction device.

[0015] 2. This utility model achieves the effect of secondary filtration and purification of the filtered waste gas through the filter plate, and the auxiliary rod, together with the upper guide protrusion on its surface, achieves the effect of auxiliary guiding the filtered waste gas. The lower auxiliary protrusion, which is set to be inclined downward, achieves the effect of accelerating the filtration of the waste gas passing into the filter liquid.

[0016] 3. This utility model achieves the effect of connecting and fixing the exhaust pipe and the flow guiding mechanism through the fixing frame, achieves the effect of discharging filtered waste gas through the exhaust pipe, and accelerates the discharge of waste gas through the flow guiding mechanism. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0018] Figure 1 This is a front view of the overall structure of this utility model;

[0019] Figure 2 This is a front view of the filter assembly connection in this utility model;

[0020] Figure 3 In this utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0021] Figure 4 This is a front view of the internal structure connection of the filter box in this utility model;

[0022] Figure 5 In this utility model Figure 2 Enlarged view of the structure at point B in the middle.

[0023] Figure label:

[0024] 1. Reaction apparatus; 2. Transfer pipe; 3. Delivery pipe; 4. Filter assembly; 5. External connecting frame; 6. Detection box; 7. Filter box; 8. Inner cavity; 9. Separation cavity; 10. Sealing ring; 11. Sealing groove; 12. Sealing gasket; 13. Detection mechanism; 14. Filter plate; 15. Auxiliary rod; 16. Exhaust pipe; 17. Fixing frame; 18. Flow guiding mechanism; 19. Upper flow guiding protrusion; 20. Lower auxiliary protrusion. Detailed Implementation

[0025] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0026] See Figure 1-5 As shown, a fixed-bed reactor for maleic anhydride production includes a reaction device 1. A transfer pipe 2 and a delivery pipe 3 are fixedly connected to the top of the reaction device 1. A filter assembly 4 is connected to the bottom of the delivery pipe 3. An external connecting frame 5 is fixedly connected between the filter assembly 4 and the reaction device 1. The filter assembly 4 includes a detection box 6 and a filter box 7, which are arranged in a matching manner. The filter box 7 has an inner cavity 8 and a partition cavity 9. A sealing groove 11 is opened on the top of the detection box 6. A sealing ring 10 is embedded in the sealing groove 11. A sealing gasket 12 is sleeved between the sealing ring 10 and the sealing groove 11. A detection mechanism 13 is embedded on the top of the detection box 6. A filter plate 14 is fixedly connected to the top of the inner cavity 8. An auxiliary rod 15 is fixedly connected to the bottom of the filter plate 14. An upper guide protrusion 19 and a lower auxiliary protrusion 20 are fixedly connected to the surface of the auxiliary rod 15. A guide mechanism 18, a fixing frame 17, and an exhaust pipe 16 are fixedly connected above the filter plate 14.

[0027] In this embodiment of the utility model, the detection box 6 and the filter box 7 are arranged as an integral unit, separated by a partition. The detection box 6 is trapezoidal in shape, and the conveying pipe 3 is vertically inserted through the detection box 6 and embedded in the filter box 7. The sealing ring 10 is embedded in the sealing groove 11 by the sealing gasket 12. The sealing ring 10 is also sleeved with the conveying pipe 3. By using the detection box 6 in conjunction with the sealing ring 10 and the sealing gasket 12 at its top, the gas conveying is sealed, preventing premature leakage of waste gas. The filter box 7 is used to filter the gas conveyed from the reaction device 1.

[0028] The waste gas from the reaction device 1 is transported to the filter assembly 4 through the conveying pipe 3. During the conveying process, the sealing ring 10 and the sealing gasket 12 can effectively prevent gas leakage. In conjunction with the detection mechanism 13 (set as a leakage detection mechanism), leakage detection can be achieved. The conveyed waste gas is directly fed into the filter box 7 for filtration treatment.

[0029] The filter plate 14 is arranged horizontally in a rectangle, and the auxiliary rod 15 is arranged vertically. There are 2-4 sets of auxiliary rods 15 distributed along the bottom surface of the filter plate 14. The upper guide protrusion 19 is arranged upwardly on one side of the top surface of the auxiliary rod 15, while the lower auxiliary protrusion 20 is arranged downwardly on the bottom surface of the auxiliary rod 15. The filter plate 14 achieves the effect of secondary filtration and purification of the filtered waste gas. The auxiliary rod 15, together with the upper guide protrusion 19 on its surface, achieves the effect of auxiliary guiding the filtered waste gas. The downwardly inclined lower auxiliary protrusion 20 achieves the effect of accelerating the filtration of the waste gas introduced into the filtrate.

[0030] The waste gas transported through the conveying pipe 3 is directly fed into the filter liquid added to the inner cavity 8 for filtration. After filtration, the waste gas flows upward, and the upper guide protrusion 19 assists in guiding it to accelerate its discharge speed, while the lower auxiliary protrusion 20 accelerates the bursting of bubbles formed by the waste gas in the filter liquid, thus speeding up the filtration process.

[0031] The partition cavity 9 is fan-shaped and located on one side of the top of the inner cavity 8, separating it from the inner cavity 8. The fixing frame 17 is horizontally arranged as a whole. The exhaust pipe 16 and the flow guiding mechanism 18 are fixedly connected to its two ends respectively. The exhaust pipe 16 is also sealed in the partition cavity 9, while the flow guiding mechanism 18 is a fan mechanism located above the filter plate 14. The fixing frame 17 achieves the effect of connecting and fixing the exhaust pipe 16 and the flow guiding mechanism 18. The exhaust pipe 16 achieves the effect of discharging the filtered waste gas, and the flow guiding mechanism 18 accelerates the discharge of waste gas.

[0032] The waste gas is introduced into the filtrate in the inner cavity 8. After being filtered and purified, it flows upward. The guide mechanism 18 is activated to accelerate the flow of the waste gas toward the exhaust pipe 16. Finally, it is discharged outward through the exhaust pipe 16, thus completing the filtration and purification treatment of the waste gas.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A fixed bed reactor for succinic acid production, characterized by: The reaction device (1) is fixedly connected to the top of the reaction device (1) with a connecting pipe (2) and a conveying pipe (3) connected in communication. The bottom end of the conveying pipe (3) is connected to a filter assembly (4). An external connecting frame (5) is fixedly connected between the filter assembly (4) and the reaction device (1). The filter assembly (4) includes a detection box (6) and a filter box (7) that are matched on the upper and lower sides. The filter box (7) has an inner cavity (8) and a partition cavity (9) inside. The top of the test box (6) is provided with a sealing groove (11), a sealing ring (10) is embedded in the sealing groove (11), and a sealing gasket (12) is fitted between the sealing ring (10) and the sealing groove (11). The top of the test box (6) is provided with a test mechanism (13). The top of the inner cavity (8) is fixedly connected with a filter plate (14). The bottom of the filter plate (14) is fixedly connected with an auxiliary rod (15). The surface of the auxiliary rod (15) is fixedly connected with an upper guide protrusion (19) and a lower auxiliary protrusion (20). The filter plate (14) is fixedly provided with a matching guide mechanism (18), a fixing frame (17) and an exhaust pipe (16).

2. A fixed bed reactor for the production of succinic acid according to claim 1, characterized in that: The detection box (6) and the filter box (7) are arranged as an integral unit, separated by a partition. The detection box (6) is trapezoidal, and the conveying pipe (3) vertically penetrates the detection box (6) and is embedded in the filter box (7).

3. The fixed bed reactor for the production of succinic acid according to claim 1, characterized in that: The sealing ring (10) is embedded in the sealing groove (11) by the sealing gasket (12), and the sealing ring (10) is also sleeved on the delivery pipe (3).

4. The fixed bed reactor for the production of succinic acid according to claim 1, characterized in that: The filter plate (14) is arranged in a rectangular horizontal position, and the auxiliary rod (15) is arranged vertically. There are 2-4 groups of auxiliary rods distributed along the bottom surface of the filter plate (14). The upper guide protrusion (19) is arranged at an upward inclination along one side of the top surface of the auxiliary rod (15), while the lower auxiliary protrusion (20) is arranged at a downward inclination along the bottom surface of the auxiliary rod (15).

5. The fixed bed reactor for the production of succinic acid according to claim 1, characterized in that: The partition cavity (9) is fan-shaped and located on one side of the top of the inner cavity (8), and is separated from the inner cavity (8).

6. The fixed bed reactor for the production of succinic acid according to claim 1, characterized in that: The fixing frame (17) is arranged horizontally as a whole, and the exhaust pipe (16) and the flow guiding mechanism (18) are fixedly connected to its two ends respectively. The exhaust pipe (16) is sealed in the partition cavity (9), while the flow guiding mechanism (18) is set as a fan mechanism and is located above the filter plate (14).

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