Integrated tetrahydrofuran production device

Abstract

The utility model discloses an integrated tetrahydrofuran production device, which belongs to the technical field of tetrahydrofuran production and comprises a reaction kettle and a rectifying tower, a plurality of hollow net discs are transversely and fixedly mounted in the rectifying tower and are communicated through connecting pipes, and the side walls of the hollow net discs are respectively communicated with a liquid inlet pipe and a liquid outlet pipe; a rectangular hole is formed in the side wall of the rectifying tower, a rectangular frame is slidably mounted in the rectangular hole, and a filling layer is arranged in the rectangular frame; a rectangular hole is formed in the top surface of the rectangular frame, a mounting groove is longitudinally formed in the top surface of the rectangular frame, a spring is fixedly mounted in the mounting groove, a clamping block is fixedly mounted on the top surface of the spring, and a clamping groove corresponding to the clamping block is formed in the inner wall of the rectangular hole. Therefore, the production efficiency of tetrahydrofuran is further improved.

Description

Technical Field

[0001] This utility model belongs to the field of tetrahydrofuran production technology, and in particular, an integrated tetrahydrofuran production device. Background Technology

[0002] Tetrahydrofuran (THF) is an important organic synthesis raw material and a high-performance solvent, often referred to as a "universal solvent." Currently, THF is primarily prepared using reactive distillation columns. The catalyst is added to the lower part of the column, while the raw material reacts in the reaction zone at the bottom. During the reaction, the resulting THF is in a gaseous state under the column's temperature conditions and is discharged from the top as a gaseous phase. After subsequent dehydration and impurity removal, the THF product is obtained.

[0003] In existing integrated tetrahydrofuran production units, the dehydration and impurity removal process of tetrahydrofuran gas mostly relies on condensation for dehydration and a packing layer for filtering impurities. However, the packing layer's filtration efficiency can be affected after prolonged use, necessitating disassembly or replacement. Currently, most packing layers are fixed in place, making disassembly and replacement inconvenient. Therefore, there is an urgent need for an integrated tetrahydrofuran production unit to address this issue. Utility Model Content

[0004] The purpose of this invention is to provide an integrated tetrahydrofuran production apparatus to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an integrated tetrahydrofuran production device, comprising a reaction vessel for installing the tetrahydrofuran production device and a distillation column, wherein a gas transmission pipe is connected to the top surface of the distillation column, and a feed pipe is connected to the top surface of the reaction vessel, and a stirring rod is horizontally installed inside the reaction vessel;

[0006] The interior of the distillation column is equipped with multiple hollow mesh trays that are fixed horizontally, and these hollow mesh trays are connected to each other by connecting pipes. The side walls of the hollow mesh trays are respectively connected to inlet pipes and outlet pipes.

[0007] The distillation column has rectangular holes on its sidewalls, and a rectangular frame is slidably installed inside the rectangular holes. The rectangular frame is filled with a packing layer for tetrahydrofuran filtration.

[0008] The top surface of the rectangular frame has a longitudinally formed mounting groove. A spring is fixedly installed inside the mounting groove. A locking block is fixedly installed on the top surface of the spring. The inner wall of the rectangular hole has a locking groove corresponding to the locking block.

[0009] Preferably, the side wall of the rectangular frame has a longitudinally formed strip hole, and the side wall of the card block is fixedly installed with a pull rod.

[0010] Preferably, the pull rod fixedly connected to the side wall of the card block slides through the strip hole.

[0011] Preferably, the side wall of the card block is symmetrically fixedly connected with two limiting blocks, and the inner wall of the mounting groove is symmetrically provided with two limiting grooves.

[0012] Preferably, the two limiting blocks fixedly connected to the side wall of the card block are slidably connected to the inside of the two limiting grooves opened on the inner wall of the mounting groove.

[0013] Preferably, rectangular sealing gaskets are fixedly adhered to the outer walls of the plurality of hollow mesh trays, and the outer walls of the rectangular sealing gaskets are sealed and fitted to the inner wall of the distillation column.

[0014] Compared with the prior art, the technical effects and advantages of this utility model are as follows:

[0015] This integrated tetrahydrofuran production unit benefits from the setup of inlet pipe, outlet pipe, and multiple mesh discs. Coolant is introduced into the interior of the hollow mesh discs through the inlet pipe. When tetrahydrofuran generates gas in the reactor, the rising gas will come into contact with the hollow mesh discs and exchange heat with the coolant in the hollow mesh discs, thus achieving the dehydration of the tetrahydrofuran gas.

[0016] This integrated tetrahydrofuran production device, thanks to the structure of rectangular frame, mounting groove, spring and locking block, pushes the rectangular frame into the rectangular hole. At this time, the locking block will correspond to the locking groove opened in the rectangular hole. Then the spring will push the locking block to engage with the inside of the locking groove, thereby realizing the limiting installation of the rectangular frame.

[0017] This integrated tetrahydrofuran production unit, thanks to the design of the pull rod and the slotted hole, allows for quick removal of the rectangular frame and filling layer when the rectangular frame needs to be disassembled. By pressing down the pull rod, the locking block will retract into the mounting slot, thereby moving the locking block out of the slot.

[0018] Compared with existing technologies, this integrated tetrahydrofuran production unit can quickly disassemble and replace the filling layer of the tetrahydrofuran gas filter, thereby further improving the tetrahydrofuran production efficiency. Attached Figure Description

[0019] 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. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a three-dimensional sectional view of the reaction vessel and distillation column in this utility model;

[0022] Figure 3 This is a schematic diagram showing the connection of the hollow wire mesh, connecting pipe, etc. in this utility model;

[0023] Figure 4 This is a three-dimensional sectional view of the hollow mesh disk in this utility model;

[0024] Figure 5 This is a partial planar sectional view of the rectangular frame in this utility model.

[0025] Explanation of reference numerals in the attached figures:

[0026] In the diagram: 1. Reactor; 2. Distillation column; 3. Gas delivery pipe; 4. Feed pipe; 5. Stirring rod; 6. Hollow mesh tray; 7. Connecting pipe; 8. Liquid inlet pipe; 9. Liquid outlet pipe; 10. Rectangular hole; 11. Rectangular frame; 12. Packing layer; 13. Mounting groove; 14. Spring; 15. Locking block; 16. Pull rod; 17. Limiting block; 18. Rectangular sealing gasket. Detailed Implementation

[0027] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0028] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0029] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0030] like Figures 1 to 5The main structure of the integrated tetrahydrofuran production device shown is a reaction vessel 1 and a distillation column 2 for installing the tetrahydrofuran production device. The top surface of the distillation column 2 is connected to a gas transmission pipe 3, and the top surface of the reaction vessel 1 is connected to a feed pipe 4. A stirring rod 5 is installed horizontally inside the reaction vessel 1. When the stirring rod 5 is started, the raw materials and catalysts are fully mixed, thereby further accelerating the reaction effect.

[0031] Multiple hollow mesh trays 6 are horizontally fixedly installed inside the distillation column 2, and the multiple hollow mesh trays 6 are connected to each other by connecting pipes 7. The side walls of the hollow mesh trays 6 are respectively connected to the liquid inlet pipe 8 and the liquid outlet pipe 9. The mesh holes in two adjacent hollow mesh trays 6 are staggered, which can effectively improve the contact effect between tetrahydrofuran gas and the surface of the hollow mesh tray 6, thereby further improving the dehydration effect of tetrahydrofuran gas.

[0032] The side wall of the distillation column 2 has a rectangular hole 10. A rectangular frame 11 is slidably installed inside the rectangular hole 10. A filling layer 12 is provided inside the rectangular frame 11. The rectangular frame 11 and the filling layer 12 are located above the hollow mesh disk 6. Therefore, after the tetrahydrofuran gas is dehydrated, the tetrahydrofuran gas will continue to rise and come into contact with the filling layer 12 to filter the impurities in the tetrahydrofuran gas, thereby improving the purity of the tetrahydrofuran gas.

[0033] The top surface of the rectangular frame 11 has a longitudinally formed mounting groove 13. A spring 14 is fixedly installed inside the mounting groove 13. A locking block 15 is fixedly installed on the top surface of the spring 14. The inner wall of the rectangular hole 10 has a corresponding locking groove for the locking block 15. Thanks to the structure of the rectangular frame 11, mounting groove 13, spring 14 and locking block 15, after the rectangular frame 11 is pushed into the rectangular hole 10, the locking block 15 will correspond to the locking groove inside the rectangular hole 10. At this time, the spring 14 will push the locking block 15 to engage with the inside of the locking groove, thereby realizing the limiting installation of the rectangular frame 11.

[0034] The rectangular frame 11 has a longitudinally formed strip hole on its side wall. A pull rod 16 is fixedly installed on the side wall of the locking block 15. The pull rod 16, which is fixedly connected to the side wall of the locking block 15, slides through the strip hole. Thanks to the pull rod 16 and the strip hole, when the rectangular frame 11 needs to be disassembled, pressing down the pull rod 16 will cause the locking block 15 to retract into the mounting groove 13, thereby moving the locking block 15 out of the groove. This allows the rectangular frame 11 and the filling layer 12 to be quickly removed.

[0035] Two limiting blocks 17 are symmetrically fixedly connected to the side wall of the locking block 15, and two limiting grooves are symmetrically opened on the inner wall of the mounting groove 13. The two limiting blocks 17 fixedly connected to the side wall of the locking block 15 are slidably connected to the inside of the two limiting grooves opened on the inner wall of the mounting groove 13. Thanks to the setting of the two limiting blocks 17, the sliding direction of the locking block 15 can be effectively limited, and the stability of the locking block 15 can be further improved.

[0036] Rectangular sealing gaskets 18 are fixedly bonded to the outer walls of multiple hollow mesh trays 6. The outer walls of the rectangular sealing gaskets 18 are sealed and adhered to the inner wall of the distillation column 2. The rectangular sealing gaskets 18 can effectively improve the sealing effect between the outer wall of the hollow mesh tray 6 and the inner wall of the distillation column 2.

[0037] Working principle

[0038] In this integrated tetrahydrofuran production unit, the raw materials and catalyst are first introduced into the reactor 1 through the feed pipe 4. Then, the stirring rod 5 is activated to thoroughly mix the raw materials and catalyst, thereby accelerating the reaction. The resulting tetrahydrofuran gas rises into the distillation column 2. At this point, coolant is introduced into the interior of multiple hollow mesh trays 6 through the liquid inlet pipe 8, allowing the tetrahydrofuran gas to contact the outer walls of the trays 6. The coolant inside the trays 6 then exchanges heat with the moisture in the tetrahydrofuran gas, causing condensation. The tetrahydrofuran gas is then... The gas will continue to rise and come into contact with the filling layer 12, filtering impurities in the tetrahydrofuran gas to improve its purity. The distilled tetrahydrofuran gas will then be discharged and collected through the gas delivery pipe 3. When the filling layer 12 needs to be replaced after a long period of use, the pull rod 16 is first pressed down, and then the pull rod 16 drives the locking block 15, which is fixedly connected to it, to retract into the mounting groove 13, thereby moving the locking block 15 out of the groove and releasing the restriction of the rectangular frame 11 and the filling layer 12. Then the rectangular frame 11 and the filling layer 12 can be pulled out and replaced.

[0039] It should be noted that, in this document, relational terms such as "one" and "two" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An integrated production apparatus for tetrahydrofuran, comprising a reaction vessel (1) for installation of a tetrahydrofuran production apparatus and a rectifying column (2), characterized by: The top surface of the rectifying tower (2) is communicated with a gas conveying pipe (3), and the top surface of the reaction kettle (1) is communicated with a feeding pipe (4) which is installed, a stirring rod (5) is transversely installed inside the reaction kettle (1); A plurality of hollow mesh trays (6) are transversely fixedly installed inside the rectifying tower (2), and the plurality of hollow mesh trays (6) are communicated through connecting pipes (7), the side walls of the hollow mesh trays (6) are respectively communicated with liquid inlet pipes (8) and liquid outlet pipes (9); A rectangular hole (10) is formed in the side wall of the rectifying tower (2), a rectangular frame (11) is slidingly installed inside the rectangular hole (10), and a filling layer (12) for filtering tetrahydrofuran is arranged in the rectangular frame (11); A mounting groove (13) is longitudinally formed in the top surface of the rectangular frame (11), a spring (14) is fixedly installed inside the mounting groove (13), a clamping block (15) is fixedly installed on the top surface of the spring (14), and a clamping groove is formed in the inner wall of the rectangular hole (10) corresponding to the clamping block (15).

2. The integrated device for producing tetrahydrofuran according to claim 1, wherein: A strip-shaped hole is longitudinally formed in the side wall of the rectangular frame (11), and a pull rod (16) is fixedly installed on the side wall of the clamping block (15).

3. The integrated device for producing tetrahydrofuran according to claim 2, wherein: The pull rod (16) fixedly connected to the side wall of the clamping block (15) slidingly passes through the strip-shaped hole.

4. The integrated device for producing tetrahydrofuran according to claim 3, wherein: Two limiting blocks (17) are symmetrically fixedly connected to the side wall of the clamping block (15), and two limiting grooves are symmetrically formed in the inner wall of the mounting groove (13).

5. The integrated device for producing tetrahydrofuran according to claim 4, wherein: The two limiting blocks (17) fixedly connected to the side wall of the clamping block (15) are respectively slidingly connected to the interiors of the two limiting grooves formed in the inner wall of the mounting groove (13).

6. The integrated device for producing tetrahydrofuran according to claim 1, wherein: Rectangular sealing gaskets (18) are fixedly bonded to the outer walls of the plurality of hollow mesh trays (6), and the outer walls of the rectangular sealing gaskets (18) are sealingly attached to the inner wall of the rectifying tower (2).

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