Tetrahydrofuran recovery device

Abstract

The invention relates to a tetrahydrofuran recovery device which comprises a tank body, an exhaust pipe arranged at the upper end of the tank body, a liquid discharge pipe arranged at the lower end of the tank body, an air inlet pipe assembled on the lower side of the tank body, a spraying mechanism assembled on the upper side in the tank body, and a recovery mechanism arranged in the middle of the tank body, the plurality of vortex spiral parts are uniformly and fixedly assembled in the middle of the tank body in a staggered manner, the plurality of vortex spiral parts are all located on the inner side of the attaching assembly, reaction grooves are formed in the side edges of the vortex spiral parts, and the dispersion effect of a gas phase can be improved through the vortex spiral parts, so that the gas phase is in full contact with a liquid phase, and the recovery effect of tetrahydrofuran is improved.

Description

Technical Field

[0001] This invention belongs to the field of tetrahydrofuran recovery technology, and specifically relates to a tetrahydrofuran recovery device. Background Technology

[0002] Packed towers, also known as packed columns, are a common type of mass transfer equipment used in chemical production. They utilize packing material as the basic component for gas-liquid contact and mass transfer. The gas flows continuously from bottom to top with the liquid, facilitating mass and heat transfer between the two phases. Packed towers are commonly used for absorption, distillation, and extraction. In chemical production, residual tetrahydrofuran is often recovered. Traditional packed towers generally have poor interaction between the gas and liquid phases, leading to insufficient contact and reduced tetrahydrofuran recovery efficiency. Therefore, a tetrahydrofuran recovery device is provided to address this issue. Summary of the Invention

[0003] The purpose of this invention is to provide a tetrahydrofuran recovery device to solve the problems existing in the prior art.

[0004] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0005] A tetrahydrofuran recovery device includes a tank, an exhaust pipe at the upper end of the tank, a drain pipe at the lower end of the tank, an air inlet pipe on the lower side of the tank, a spraying mechanism on the upper side inside the tank, and a recovery mechanism in the middle of the tank.

[0006] The recycling mechanism includes several spiral components. A bonding assembly is installed in the middle of the tank. Several spiral components are evenly and alternately fixedly assembled in the middle of the tank. Several spiral components are located inside the bonding assembly. A reaction tank is opened on the side of the spiral component.

[0007] Preferably, the spiral shape of the spiral component is that it spreads outward from the middle to the upper and lower sides in a spiral manner, and the shape of the upper and lower sides of the spiral component is rotationally symmetrical around the center.

[0008] Preferably, the spiral component has two reaction grooves, which are located on the inner and outer sides of the spiral component, respectively, and the opening direction of the two reaction grooves is inclined upward.

[0009] Preferably, the bonding component is an inner plate of the tank wall, and the inner side of the bonding component is provided with a plurality of arc-shaped bonding grooves, which are adapted to the outer shape of the spiral component.

[0010] Preferably, a gathering ring plate is fixedly assembled at the lower end of the bonding component.

[0011] Preferably, brackets are fixedly provided at both the upper and lower ends of several of the spiral components, and two sets of brackets are fixedly assembled inside the bonding assembly.

[0012] Preferably, the air inlet pipe has an air inlet slot on one side inside the tank body, the air inlet slot is located on the side of the air inlet pipe body, and the opening direction of the air inlet slot is downward.

[0013] Preferably, the connection between the exhaust pipe and the tank body is shaped like an inverted funnel.

[0014] The advantages of this invention are: the staggered arrangement of several spiral components can fully receive the downward sprayed liquid, and the spiral components can improve the dispersion effect of the gas phase, thereby enabling the gas phase and liquid phase to fully contact each other. Furthermore, the liquid phase is transported by the reaction tank on the spiral component, which can increase the liquid phase transport time. Moreover, the reaction tank is located on the inner and outer sides of the spiral component, making the reaction more complete. Attached Figure Description

[0015] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the structure of a tetrahydrofuran recovery device according to the present invention;

[0017] Figure 2 This is a schematic cross-sectional view of a tetrahydrofuran recovery device according to the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of several spiral components in this invention;

[0019] Figure 4 This is a top view of several spiral components in this invention;

[0020] Figure 5 This is a schematic diagram of the spiral component structure in this invention;

[0021] The symbols for the main components are explained below:

[0022] Tank 1, exhaust pipe 11, drain pipe 12, air inlet pipe 13, air inlet slot 131, spiral component 14, reaction tank 141, bonding assembly 15, arc-shaped bonding groove 151, gathering ring plate 152, bracket 16. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Example:

[0025] like Figure 1-2As shown, a tetrahydrofuran recovery device of the present invention includes a tank 1. The upper end of the tank 1 is provided with an exhaust pipe 11. The connection between the exhaust pipe 11 and the tank 1 is shaped like an inverted funnel. The inverted funnel design of the connection can facilitate the discharge of gas and prevent gas from accumulating at the top of the tank 1. The lower end of the tank 1 is provided with a drain pipe 12. The lower side of the tank 1 is equipped with an air inlet pipe 13. The air inlet pipe 13 is located on one side inside the tank 1 with an air inlet slot 131. The air inlet slot 131 is located on the side of the air inlet pipe 13 and the opening direction of the air inlet slot 131 is downward. The downward setting of the air inlet slot 131 can prevent liquid from flowing back from the air inlet pipe 13. The upper side of the inside of the tank 1 is equipped with a spraying mechanism. The setting of a spraying mechanism at the top of the inner side of the packed tower is a conventional setting in the art, which can make the liquid phase more evenly distributed when it is discharged. It will not be described in detail in the text. The middle part of the tank 1 is provided with a recovery mechanism.

[0026] like Figure 3-5 As shown, the recycling mechanism includes several spiral components 14. A fitting assembly 15 is installed in the middle of the tank body 1. The spiral components 14 are evenly and alternately fixedly installed in the middle of the tank body 1. The staggered arrangement of the spiral components 14 ensures that there are no gaps between them when viewed from above, allowing the spiral components 14 to collect the sprayed liquid. All spiral components 14 are located inside the fitting assembly 15. The spiral shape of the spiral components 14 spreads outward from the center to both sides in a spiral manner. The shape of the upper and lower sides of the component 14 is centrally rotationally symmetrical. The cross section of the spiral component 14 along the vertical direction of the spiral is cylindrical. The spiral component 14 has reaction grooves 141 on its side. There are two reaction grooves 141 on the spiral component 14. The two reaction grooves 141 are located on the inner and outer sides of the spiral component 14, respectively. The opening direction of the two reaction grooves 141 is inclined upward at 45 degrees. The gas phase can move upward along the arc surface on the lower side of the spiral component 14. During the process, the dispersed gas phase can react with the liquid phase in the reaction grooves 141 on both sides.

[0027] like Figure 2 As shown, the bonding component 15 is an inner plate of the tank wall. Several arc-shaped bonding grooves 151 are opened on the inner side of the bonding component 15. The arc-shaped bonding grooves 151 are adapted to the outer shape of the spiral component 14. The adaptation of the spiral component 14 and the arc-shaped bonding grooves 151 can increase the tightness between the structures and enable the gas phase and liquid phase to fully interact. A gathering ring plate 152 is fixedly installed at the lower end of the bonding component 15. Supports 16 are fixedly installed at both the upper and lower ends of the spiral components 14. Both sets of supports 16 are fixedly installed on the inner side of the bonding component 15. The supports 16 play a role in providing stable support for the spiral components 14.

[0028] During the tetrahydrofuran recovery process, the gas phase is introduced through the inlet pipe 13 and enters the tank 1 through the downward-facing inlet 131. Then, it flows upward to several vortex spiral components 14. The vortex spiral components 14 facilitate the dispersion and movement of the gas phase. During the process, the gas phase under the vortex spiral components 14 will disperse and react with the liquid phase moving in the reaction tanks 141 on both sides. The conveying through the reaction tanks 141 increases the movement path of the liquid phase, which can improve the reaction time between the gas phase and the liquid phase. This allows for more sufficient contact between the gas phase and the liquid phase, thereby improving the tetrahydrofuran recovery effect.

[0029] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A tetrahydrofuran recovery device, comprising a tank body, characterized in that: The upper end of the tank body is provided with an exhaust pipe, the lower end of the tank body is provided with a drain pipe, the lower side of the tank body is equipped with an air intake pipe, the upper side of the inner part of the tank body is equipped with a spray mechanism, and the middle part of the tank body is provided with a recovery mechanism; The recovery mechanism includes a plurality of scroll spirals, a fitting assembly is installed in the middle of the tank body, a plurality of scroll spirals are evenly staggered and fixedly installed in the middle of the tank body, a plurality of scroll spirals are located inside the fitting assembly, and a reaction groove is opened on the side of the scroll spiral.

2. A tetrahydrofuran recovery device according to claim 1, characterized in that: The spiral shape of the scroll spiral element spreads outward from the middle to the upper and lower sides in a spiral manner, and the shapes of the upper and lower sides of the scroll spiral element are rotationally symmetrical around the center.

3. A tetrahydrofuran recovery device according to claim 1, characterized in that: There are two reaction grooves opened on the scroll spiral element, and the two reaction grooves are respectively located at the inner and outer sides of the scroll spiral element, and the opening directions of the two reaction grooves are inclined upward at a degree.

4. A tetrahydrofuran recovery device according to claim 1, characterized in that: The fitting component is an inner plate of the tank wall, and a plurality of arc-shaped fitting grooves are provided on the inner side of the fitting component. The arc-shaped fitting grooves are matched with the outer shape of the volute spiral component.

5. A tetrahydrofuran recovery device according to claim 4, characterized in that: A gathering ring plate is fixedly mounted on the lower end of the fitting assembly.

6. A tetrahydrofuran recovery device according to claim 4, characterized in that: Brackets are fixedly provided at the upper and lower ends of the plurality of volute spiral members, and the two groups of brackets are fixedly assembled on the inner side of the fitting assembly.

7. A tetrahydrofuran recovery device according to claim 1, characterized in that: The air inlet pipe is provided with an air inlet slot on one side inside the tank body, the air inlet slot is located on the side of the air inlet pipe body, and the opening direction of the air inlet slot faces downward.

8. A tetrahydrofuran recovery device according to claim 1, characterized in that: The shape of the connection between the exhaust pipe and the tank body is an inverted funnel shape.

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