Fixed bed device capable of rapidly filling catalyst

Abstract

The utility model relates to the technical field of catalytic devices, and discloses a fixed bed device capable of quickly filling a catalyst, which comprises a reaction cylinder body, a first catalyst filling cylinder, a second catalyst filling cylinder, a first catalyst filling cylinder, a second catalyst filling cylinder and a second catalyst filling cylinder, and is characterized in that the reaction cylinder body comprises an upper cylinder body and a lower cylinder body; the fixed rotating shaft is parallel to the axis of the reaction barrel, and the two ends of the fixed rotating shaft are fixedly arranged respectively; a first catalyst filling cylinder and a second catalyst filling cylinder are fixedly arranged on the fixed rotating shaft, and the first catalyst filling cylinder and the second catalyst filling cylinder alternately rotate to react with the reaction cylinder body; the problems that according to an existing fixed bed device for the catalyst, the process of disassembling and replacing the catalyst is complex, and the filling and disassembling time of the catalyst is long are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of catalytic devices, in particular to a fixed bed device for rapidly loading catalysts. Background Art

[0002] The information disclosed in this background technology section is only intended to increase understanding of the overall background of the present invention, and is not necessarily regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art.

[0003] With the development of science and technology, catalysts are being used in more and more fields. However, most catalysts experience a decrease in activity or even deactivation after a period of use. Therefore, they need to be replaced after a period of use. Existing devices often directly load the catalyst and remove it for replacement after the catalyst activity decreases to a certain level. Furthermore, because the reaction vessels for catalytic reactions are often airtight containers, the removal and replacement of the catalyst is complex, and the loading and removal of the catalyst takes a long time, affecting production efficiency. Therefore, the development of a fixed-bed device for rapid catalyst loading is particularly important in production activities. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a fixed bed device for quickly loading catalysts. The fixed bed device provided by the present invention solves the problem that the process of disassembling and replacing the catalyst is complicated and the loading and disassembly time of the catalyst is long in the existing catalyst fixed bed device.

[0005] In order to achieve the above purpose, the technical solution of the utility model is:

[0006] A fixed bed device for rapid catalyst loading, comprising:

[0007] The reaction cylinder comprises an upper cylinder and a lower cylinder, and a first catalyst loading cylinder is sealed between the upper cylinder and the lower cylinder;

[0008] A fixed rotating shaft is arranged parallel to the axis of the reaction cylinder, and both ends of the fixed rotating shaft are respectively fixed;

[0009] The first catalyst filling cylinder and the second catalyst filling cylinder are fixedly arranged on the fixed rotating shaft. The fixed rotating shaft rotates to drive the first catalyst filling cylinder and the second catalyst filling cylinder to move, and the first catalyst filling cylinder and the second catalyst filling cylinder are alternately moved into the reaction cylinder to participate in the reaction.

[0010] The utility model rotates the fixed rotating shaft on the support frame, so that the first catalyst filling cylinder and the second catalyst filling cylinder are alternately moved to react with the reaction cylinder body, and the other idle catalyst filling cylinder takes out the catalyst and replaces the catalyst, so that one of the two catalyst filling cylinders is used for catalytic reaction and the other is used for catalyst removal and replacement. The two can be alternately completed by the fixed rotating shaft in the middle, saving catalyst replacement time, and can be applied to dehydration reactions of most loaded catalysts.

[0011] In some embodiments, the catalyst loading cylinder includes a loading cylinder shell, and both ends of the loading cylinder shell are respectively connected to detachable metal meshes. The loading cylinder shell and the metal meshes at both ends form a receiving space for loading the catalyst.

[0012] In some embodiments, the fixed rotating shaft includes a rod and a bearing. Both ends of the rod are fixedly provided. The bearing is fixed on the rod. The first catalyst loading cylinder and the second catalyst loading cylinder are fixedly provided on the bearing.

[0013] In some embodiments, the bearing is connected to the first catalyst cartridge and the second catalyst cartridge by welding.

[0014] In some embodiments, the catalyst loading cylinder is sealed and connected to the reaction cylinder through threads, the open ends of the upper cylinder and the lower cylinder are threadedly connected with nuts, and nuts matching the threads are provided at both ends of the catalyst loading cylinder.

[0015] In some embodiments, the first catalyst loading cylinder and the second catalyst loading cylinder are arranged parallel to the rod connected to the rotating shaft.

[0016] In some embodiments, a raw gas inlet pipe and a raw gas outlet pipe are further included, wherein the raw gas inlet pipe is connected to the upper cylinder, and the raw gas outlet pipe is connected to the lower cylinder.

[0017] In some embodiments, the lower cylinder is connected to a heat exchanger via a raw gas outlet pipe, and the heat exchanger condenses the reacted gas to generate liquid.

[0018] In some embodiments, the heat exchanger is connected to a product storage tank, and the product storage tank is used to store liquid condensed by the heat exchanger.

[0019] In some embodiments, a switch valve is provided on the raw gas inlet pipe and the raw gas outlet pipe respectively.

[0020] In some embodiments, a reactor shell is further included, in which the reaction cylinder, the fixed rotating shaft, the first catalyst loading cylinder and the second catalyst loading cylinder are all arranged. An opening is provided on the reaction shell for operating the reaction cylinder and the catalyst loading cylinder.

[0021] The beneficial effects of the utility model are:

[0022] The utility model provides two catalyst filling cylinders, which are rotated alternately into the reaction cylinder to carry out catalytic reaction. When the catalytic activity of the catalyst is reduced to a certain level, the fixed rotating shaft is rotated to rotate the filling cylinder with low catalytic activity out of the reaction cylinder, and the other catalyst filling cylinder is rotated to between the upper and lower cylinders to carry out catalytic reaction. The catalyst filling cylinder removed from the reaction cylinder is used to replace the catalyst, which reduces the time for catalyst replacement and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0024] Figure 1 A schematic diagram of the overall structure of a fixed bed device for rapid catalyst loading provided by an embodiment of the present utility model;

[0025] Figure 2 A schematic structural diagram of a fixed bed device for rapid catalyst loading according to an embodiment of the present invention, showing a state in which the side door is open;

[0026] Figure 3 A schematic diagram of the connection between the reaction cylinder and the first catalyst loading cylinder of the fixed bed device for rapid catalyst loading provided by an embodiment of the present invention;

[0027] Figure 4 A schematic diagram of the connection relationship of the fixed rotating shaft of the fixed bed device for rapid catalyst loading provided by an embodiment of the present utility model;

[0028] Among them, 1. reaction cylinder; 11. upper cylinder; 12. lower cylinder; 2. first catalyst filling cylinder; 3. second catalyst filling cylinder; 31. external thread; 4. nut; 5. fixed shaft; 51. rod; 52. bearing; 53. fixed block; 6. reactor shell; 61. side door; 7. heat exchanger; 8. product storage tank; 9. raw gas inlet pipe; 10. raw gas outlet pipe. DETAILED DESCRIPTION

[0029] Aiming at the problem that the existing catalyst fixed bed device has a complicated process of removing and replacing the catalyst, and the catalyst loading and removing time is long, which affects the production efficiency, the utility model proposes a fixed bed device with rapid catalyst loading.

[0030] In order to enable those skilled in the art to more clearly understand the technical solution of the present invention, the technical solution of the present invention will be described in detail below with reference to specific embodiments.

[0031] The utility model provides a fixed bed device for rapidly loading catalyst, such as Figure 1 As shown, it comprises: a reaction cylinder 1, the reaction cylinder 1 comprises an upper cylinder 11 and a lower cylinder 12, and a first catalyst loading cylinder 2 is sealed between the upper cylinder 11 and the lower cylinder 12;

[0032] A fixed rotating shaft 5 is arranged parallel to the axis of the reaction cylinder 1, and both ends of the fixed rotating shaft 5 are respectively fixed;

[0033] The first catalyst loading cylinder 2 and the second catalyst loading cylinder 3 are fixedly mounted on the fixed rotating shaft 5 . The rotation of the fixed rotating shaft 5 drives the first catalyst loading cylinder 2 and the second catalyst loading cylinder 3 to move alternately into the reaction cylinder 1 to participate in the reaction.

[0034] In an optional embodiment, the upper cylinder 11 and the lower cylinder 12 of the reaction cylinder 1 are both cylindrical structures with one end open, and the open ends are arranged opposite to each other. The other end of the upper cylinder 11 is connected to the raw gas inlet pipe 9, and the other end of the lower cylinder 12 is connected to the raw gas outlet pipe 10. The filling cylinder shell is a cylindrical structure, and the opening of the filling cylinder shell is roughly equal to the diameter of the openings of the upper cylinder 11 and the lower cylinder 12, thereby realizing a sealed connection between the filling cylinder shell and the reaction cylinder 1.

[0035] like Figure 2 、 Figure 3 As shown, in an optional embodiment, the catalyst filling tube is sealed and connected to the reaction tube body 1 by a snap or thread. Preferably, a threaded connection is adopted, specifically, the open ends of the upper cylinder 11 and the lower cylinder 12 of the reaction cylinder body 1 are connected by a nut 4 through a thread, the nut 4 is provided with an internal thread, and the upper and lower ends of the catalyst filling tube are provided with an external thread 31 adapted to the nut 4. The inner diameters of the upper cylinder 11 and the lower cylinder 12 are equal to the inner diameter of the catalyst filling tube, and the open ends of the upper cylinder 11 and the lower cylinder 12 relative to each other are provided with sealing gaskets. Taking the connection between the filling tube shell and the upper cylinder 11 as an example, when the catalyst filling tube is disassembled, the two nuts 4 are rotated to make them move in opposite directions, so that the catalyst filling tube is separated from the reaction tube body 1; when the catalyst filling tube is installed, the catalyst filling tube is aligned with the nut 4, and the two nuts 4 are rotated to make them move in opposite directions until the two ends of the catalyst filling tube are sealed with the upper and lower cylinders 12, and the catalyst filling tube is installed in the reaction tube body 1.

[0036] In an alternative embodiment, the catalyst loading cartridge includes a loading cartridge housing, with detachable metal mesh attached to each end of the housing. The housing and the metal mesh at each end form a storage space for loading the catalyst. Specifically, the metal mesh in the loading cartridge housing is connected using conventional techniques and may be connected by a snap-fit ​​connection, a threaded connection, or a combination of a hinge and a snap-fit ​​connection.

[0037] like Figure 2、 Figure 4 As shown, in an optional embodiment, the fixed rotating shaft 5 includes a rod 51 and a bearing 52. The bearing 52 is a rolling bearing 52. The two ends of the rod 51 are respectively fixed to the top and bottom surfaces of the reactor shell 6. The bearing 52 is fixed in the middle position of the rod 51. Fixed blocks 53 are provided on the left and right sides of the bearing 52. The first catalyst loading cylinder 2 and the second catalyst loading cylinder 3 are respectively fixed to the bearing 52 via the fixed blocks 53. Specifically, the first catalyst loading cylinder 2 and the second catalyst loading cylinder 3 are arranged parallel to the rod 51 connected to the rotating shaft, and the rod 51 is arranged parallel to the axis of the reaction cylinder 1, so that when the catalyst loading cylinder moves to the reaction cylinder 1, it is sealed and connected to the reaction cylinder 1.

[0038] In an optional embodiment, the first catalyst loading cylinder 2 and the second catalyst loading cylinder 3 are welded to the fixing block 53, and the fixing block 53 is welded to the bearing 52. At the same time, the central axes of the first catalyst loading cylinder 2 and the second catalyst loading cylinder 3 are on the same plane as the fixed rotating shaft 5.

[0039] like Figure 1 As shown, in an optional embodiment, the reactor further includes a raw gas inlet pipe 9 and a raw gas outlet pipe 10. The raw gas inlet pipe 9 is connected to the upper cylinder 11, and the raw gas outlet pipe 10 is connected to the lower cylinder 12. The raw gas inlet pipe 9, the upper cylinder 11, the catalyst loading cylinder, the lower cylinder 12, and the raw gas outlet pipe 10 are connected in sequence to form an airtight pipeline. The raw gas reacts in the reaction cylinder 1 under the catalysis of the catalyst to produce the target product.

[0040] In an optional embodiment, the lower cylinder 12 is connected to the heat exchanger 7 through the raw gas outlet pipe 10, and the heat exchanger 7 is connected to the product storage tank 8. The raw gas reacts through the reaction cylinder 1 and is transported to the heat exchanger 7 through the raw gas outlet pipe 10. The heat exchanger 7 condenses the reacted gas to generate liquid, which flows into the product storage tank 8 to store the liquid condensed by the heat exchanger 7.

[0041] In an optional embodiment, switch valves are respectively provided on the raw gas inlet pipe 9 and the raw gas outlet pipe 10, and the switch valves are opened or closed according to production needs. At the same time, when the catalyst needs to be replaced, the switch valves on the raw gas inlet pipe 9 and the raw gas outlet pipe 10 are closed, and the catalysts are disassembled, rotated, and sealed to achieve replacement.

[0042] In an optional embodiment, a reactor shell 6 is further included, and the reaction cylinder 1 , the fixed rotating shaft 5 , the first catalyst loading cylinder 2 and the second catalyst loading cylinder 3 are all arranged in the reactor shell 6 .

[0043] In an optional embodiment, a side door 61 is provided on one side of the reactor shell 6 for operating the reaction cylinder 1 and the catalyst loading cylinder. When the catalyst needs to be replaced, the side door 61 is opened to replace the catalyst.

[0044] When the activity of the catalyst in the reaction cylinder 1 decreases and needs to be replaced, open the side door 61 of the reactor shell 6, first close the switch valve on the raw gas inlet pipe 9, then close the switch valve on the raw gas outlet pipe 10, rotate the nut 4 connecting the filling cylinder shell and the reaction cylinder 1, so that the nuts 4 of the upper cylinder 11 and the lower cylinder 12 move away from each other, until the distance between the two nuts 4 is slightly greater than the height of the first catalyst filling cylinder 2, the first catalyst filling cylinder 2 and the reaction cylinder 1 are separated, and then the fixed shaft 5 is rotated to move the first catalyst filling cylinder 2 out of the reaction cylinder 1, and the second catalyst filling cylinder 3 is rotated to the position of the first catalyst filling cylinder 2 between the upper and lower cylinders 12, rotate the nut 4 connecting the filling cylinder shell and the reaction cylinder 1, so that the nuts 4 are close to each other, so that the catalyst filling cylinder and the reaction cylinder 1 are sealed and connected, and close the side door 61 of the reactor shell 6. At this time, the first catalyst filling cylinder 2 is rotated to the position of the second catalyst filling cylinder 3, and the catalyst is disassembled and replaced, which reduces the time for catalyst replacement and improves production efficiency.

[0045] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A fixed bed device for rapid catalyst loading, characterized in that: include: The reaction cylinder comprises an upper cylinder and a lower cylinder, and a first catalyst loading cylinder is sealed between the upper cylinder and the lower cylinder; A fixed rotating shaft is arranged parallel to the axis of the reaction cylinder, and both ends of the fixed rotating shaft are respectively fixed; The first catalyst filling cylinder and the second catalyst filling cylinder are fixedly arranged on the fixed rotating shaft. The fixed rotating shaft rotates to drive the first catalyst filling cylinder and the second catalyst filling cylinder to move, and the first catalyst filling cylinder and the second catalyst filling cylinder are alternately moved into the reaction cylinder to participate in the reaction.

2. The fixed bed device for rapid catalyst loading according to claim 1, characterized in that: The catalyst loading cylinder comprises a loading cylinder shell, both ends of which are respectively connected with detachable metal meshes, and the loading cylinder shell and the metal meshes at both ends form a containing space for loading the catalyst.

3. The fixed bed device for rapid catalyst loading according to claim 1, characterized in that: The fixed rotating shaft comprises a rod body and a bearing. Both ends of the rod body are fixedly arranged respectively. The bearing is fixed on the rod body. The first catalyst filling cylinder and the second catalyst filling cylinder are fixedly arranged on the bearing.

4. The fixed bed device for rapid catalyst loading according to claim 3, characterized in that: The bearing is connected to the first catalyst loading cylinder and the second catalyst loading cylinder by welding.

5. The fixed bed device for rapid catalyst loading according to claim 1, characterized in that: The catalyst loading cylinder is sealed and connected to the reaction cylinder through threads. The open ends of the upper cylinder and the lower cylinder are threadedly connected with nuts. Both ends of the catalyst loading cylinder are provided with nuts matching the threads.

6. The fixed bed device for rapid catalyst loading according to claim 3, characterized in that: The first catalyst loading cylinder and the second catalyst loading cylinder are arranged in parallel with the rod body connected to the rotating shaft.

7. The fixed bed device for rapid catalyst loading according to claim 1, characterized in that: It also includes a raw gas inlet pipe and a raw gas outlet pipe. The raw gas inlet pipe is connected to the upper cylinder, and the raw gas outlet pipe is connected to the lower cylinder.

8. The fixed bed device for rapid catalyst loading according to claim 7, characterized in that: The lower cylinder is connected to the heat exchanger through the raw gas outlet pipe, and the heat exchanger condenses the reaction gas to generate liquid.

9. The fixed bed device for rapid catalyst loading according to claim 8, characterized in that: The heat exchanger is connected to the product storage tank, which is used to store the liquid condensed by the heat exchanger.

10. The fixed bed device for rapid catalyst loading according to claim 7, characterized in that: The raw gas inlet pipe and the raw gas outlet pipe are respectively provided with switch valves.

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