CN216877906U

CN216877906U - Rectification and purification device for tetrahydrofuran

Info

Publication number: CN216877906U
Application number: CN202220299768.3U
Authority: CN
Inventors: 王丽丽; 张明
Original assignee: Tianjin Jingfen Technology Development Co ltd
Current assignee: Tianjin Jingfen Technology Development Co ltd
Priority date: 2022-02-15
Filing date: 2022-02-15
Publication date: 2022-07-05
Anticipated expiration: 2032-02-15

Abstract

The utility model discloses a rectification and purification device for tetrahydrofuran, which belongs to the technical field of tetrahydrofuran rectification and comprises an extraction tank, wherein the inner wall of the extraction tank is mutually clamped with the outer surface of a heat-insulation liner, the upper surface of the heat-insulation liner is provided with a clamping groove, the upper surface of the inner wall of the clamping groove is mutually clamped with the lower surface of a rotating device, and the bottom end of the rotating device is fixedly connected with the top end of a connecting rod. This a rectification purification device for tetrahydrofuran, through setting up the condenser pipe, helical blade, drive flabellum and actuating lever, reduced the loss of this purification device to the resource, and reduced the extravagant condition of resource appears in this purification device, and simultaneously, the rectification helical blade that follows to tetrahydrofuran then can continuously clear up the condenser pipe, avoid this purification device to appear the condition that inside impurity piles up and influence the rectification effect because of long-time the use, and then played the effect of guarantee to the extraction efficiency of this purification device.

Description

Rectification and purification device for tetrahydrofuran

Technical Field

The utility model belongs to the technical field of tetrahydrofuran rectification, and particularly relates to a rectification and purification device for tetrahydrofuran.

Background

Tetrahydrofuran is a heterocyclic organic compound with the molecular formula C4H 8O. Belongs to ethers, is a complete hydrogenation product of aromatic compound furan, and is a colorless organic liquid which can be mixed and dissolved with water and has smaller viscosity at normal temperature and normal pressure. The chemical formula of such cyclic ethers can be written as (CH2) 4O. It is a commonly used moderately polar aprotic solvent due to its long liquid range. Its main use is as high molecular polymer's precursor, and need add the catalyst in step when handling tetrahydrofuran, and after the liquid evaporation, impurity in the liquid and partial catalyst often can be along with the liquid after the vaporization together get into in the condenser pipe, and along with the inside rapid decrease of condenser pipe temperature, lead to vaporizing liquid to solidify thereupon and adhere in the inside of condenser pipe, long-time piling up not only can cause the inside thick stratum corneum that forms of condenser pipe, and influence the subsequent solidification effect to vaporizing liquid of condenser pipe, and then reduced this purification device to tetrahydrofuran's extraction efficiency.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the defects in the prior art, the utility model provides a rectification and purification device for tetrahydrofuran, which solves the problems that a catalyst needs to be synchronously added when tetrahydrofuran is treated, however, after liquid is evaporated, impurities in the liquid and part of the catalyst often enter a condensation pipe along with the evaporated liquid, the evaporated liquid is solidified and adhered to the inside of the condensation pipe along with the rapid reduction of the temperature in the condensation pipe, the thick cuticle is formed in the condensation pipe due to long-time accumulation, the subsequent solidification effect of the condensation pipe on the evaporated liquid is influenced, and the extraction efficiency of the purification device on tetrahydrofuran is further reduced.

(II) technical scheme

In order to achieve the purpose, the utility model provides the following technical scheme: a rectification purification device for tetrahydrofuran comprises an extraction tank, wherein the inner wall of the extraction tank is clamped with the outer surface of a heat-insulation inner container, the upper surface of the heat-insulation inner container is provided with a clamping groove, the upper surface of the inner wall of the clamping groove is clamped with the lower surface of a rotating device, the bottom end of the rotating device is fixedly connected with the top end of a connecting rod, the outer surface of the connecting rod is fixedly connected with the inner wall of a first gear, the first gear is meshed with a second gear, the right side surface of the second gear is fixedly connected with the left end of a driving rod, the outer surface of the driving rod is fixedly connected with the inner wall of a spiral blade, the outer surface of the spiral blade is clamped with the inner wall of a condensation pipe, the driving rod is positioned in the condensation pipe, the outer surface of the driving rod is fixedly connected with the bottom end of a positioning retainer through a connecting cylinder, and the top end of the positioning retainer is fixedly connected with the lower surface of a sealing plate, the upper surface of the sealing plate is fixedly connected with the upper surface of the inner wall of the clamping groove, the bottom end of the connecting rod is fixedly connected with the upper surface of the driving fan blade, and the driving fan blade is located in the heat-insulating inner container.

As a further scheme of the utility model: the outer surface of the connecting rod is sleeved with a sleeve, the sleeve is a sealing sleeve, the outer surface of the sleeve is fixedly connected with the inner wall of the sealing plate, and a pressure pump is arranged in the extraction tank.

As a further scheme of the utility model: the outer surface of the extraction tank is fixedly connected with the inner wall of the ventilation shell, the ventilation shell is communicated with the condensation component through the extraction tank, the lower surface of the condensation component is fixedly connected with the upper surface of the extraction tank, and the first gear and the second gear are both arranged to be bevel gears.

As a further scheme of the utility model: the surface winding of condenser pipe has the cooling tube, the left end of cooling tube is linked together with the surface of shell of ventilating, the condenser pipe passes the shell of ventilating and draws jar and be linked together with the heat preservation inner bag.

As a further scheme of the utility model: the upper surface of extracting the jar is connected with heating device's last fixed surface, heating device's surface fixed connection has a plurality of supporting component, and a plurality of supporting component is in same level.

As a further scheme of the utility model: the right end of the condensing pipe is communicated with the top end of the guide pipe through an elbow, the bottom end of the guide pipe is communicated with the upper surface of the collecting barrel, and the collecting barrel is set to be a toughened glass collecting barrel.

As a further scheme of the utility model: the rotating device comprises a bearing, the bearing is clamped on the upper surface of the inner wall of the clamping groove, a rotating shaft is sleeved in the bearing, and the bottom end of the rotating shaft is in transmission connection with the top end of the connecting rod.

(III) advantageous effects

Compared with the prior art, the utility model has the beneficial effects that:

1. the rectification and purification device for tetrahydrofuran is provided with the condenser pipe, the helical blade, the driving fan blade and the driving rod, when tetrahydrofuran is gradually evaporated along with the operation of the pressure pump and the heating device, the evaporated tetrahydrofuran enters the clamping groove along with the heat-preservation liner and enters the condenser pipe along the internal shape of the clamping groove, meanwhile, the driving fan blade drives the driving rod to rotate through the first gear and the second gear, so that the driving rod cleans the inside of a pipeline of the condenser pipe through the helical blade in the rotating process, and the operation is pushed by the pressure generated by the evaporated tetrahydrofuran and the pressure pump during the operation of the helical blade, so that the purification device synchronously operates along with the progress of purification work during the internal cleaning work, the loss of resources by the purification device is reduced, and the condition of resource waste of the purification device is reduced, meanwhile, the condensing tube can be continuously cleaned along with the rectification helical blade of the tetrahydrofuran, so that the condition that the rectification effect is influenced due to the accumulation of internal impurities caused by long-time use of the purification device is avoided, and the extraction efficiency of the purification device is guaranteed.

2. This a rectification purification device for tetrahydrofuran, through setting up condensation subassembly and cooling tube, along with this purification device lasts the rectification to tetrahydrofuran, the condenser pipe then can be in long-time high temperature state, the staff need open cooling module this moment, pour into the cooling tube with the condensate through cooling module in, thereby reduce the temperature of condenser pipe through indirect contact, avoid the direct injection condenser pipe of condensate and lead to the condenser pipe cold and hot quick alternation, thereby the effect of guarantee has been played to the life of condenser pipe, and because the cooling tube is the backward flow cooling tube, make this purification device when reducing the condenser pipe temperature, can control the temperature of condenser pipe in can lasting the mode ageing of pouring into the condensate into the cooling tube.

3. This a rectification purification device for tetrahydrofuran, through setting up the closing plate, because the closing plate sets up in the draw-in groove for in gaseous difficult entering draw-in groove when extrusion through high pressure and high temperature, avoid gaseous entering draw-in groove and lead to condensing inside the draw-in groove, thereby played sealed effect to bearing and pivot, make tetrahydrofuran difficult condensation in the bearing and influence the rotatory effect of connecting rod, ensured the stability when this purification device moves.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic three-dimensional sectional structure of an extraction tank according to the present invention;

FIG. 3 is a schematic three-dimensional structure of a driving fan blade according to the present invention;

in the figure: the device comprises an extraction tank 1, a heat preservation inner container 2, a clamping groove 3, a rotating device 4, a bearing 41, a rotating shaft 42, a connecting rod 5, a first gear 6, a second gear 7, a driving rod 8, a helical blade 9, a positioning retainer 10, a driving fan blade 11, a sleeve 12, a sealing plate 13, an air exchange shell 14, a radiating pipe 15, a condensing pipe 16, a guide pipe 17, a collecting bucket 18, a heating device 19, a supporting component 20 and a condensing component 21.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

As shown in fig. 1-3, the present invention provides a technical solution: a rectification purification device for tetrahydrofuran comprises an extraction tank 1, the inner wall of the extraction tank 1 is clamped with the outer surface of a heat-insulation inner container 2, the upper surface of the heat-insulation inner container 2 is provided with a clamping groove 3, the upper surface of the inner wall of the clamping groove 3 is clamped with the lower surface of a rotating device 4, the bottom end of the rotating device 4 is fixedly connected with the top end of a connecting rod 5, the outer surface of the connecting rod 5 is fixedly connected with the inner wall of a first gear 6, the first gear 6 is meshed with a second gear 7, the right side surface of the second gear 7 is fixedly connected with the left end of a driving rod 8, the outer surface of the driving rod 8 is fixedly connected with the inner wall of a helical blade 9, the outer surface of the helical blade 9 is clamped with the inner wall of a condensation pipe 16, the driving rod 8 is positioned in the condensation pipe 16, the outer surface of the driving rod 8 is fixedly connected with the bottom end of a positioning retainer 10 through a connecting cylinder, and the top end of the positioning retainer 10 is fixedly connected with the lower surface of a sealing plate 13, the upper surface of closing plate 13 is connected with the last fixed surface of 3 inner walls of draw-in groove, the bottom of connecting rod 5 is connected with the last fixed surface of drive flabellum 11, drive flabellum 11 is located heat preservation inner bag 2, through setting up helical blade 9, drive flabellum 11 and actuating lever 8, the condition that the wasting of resources appears in this purification device has been reduced, and simultaneously, rectification helical blade 9 along with to tetrahydrofuran then can continuously clear up condenser pipe 16, avoid this purification device to pile up the condition that influences the rectification effect because of inside impurity appears for a long time using, and then played the effect of guarantee to the extraction efficiency of this purification device.

Specifically, as shown in fig. 1 and 2, a sleeve 12 is sleeved on the outer surface of the connecting rod 5, the sleeve 12 is a sealing sleeve, the outer surface of the sleeve 12 is fixedly connected with the inner wall of the sealing plate 13, a pressure pump is arranged in the extraction tank 1, the outer surface of the extraction tank 1 is fixedly connected with the inner wall of the air exchange shell 14, the air exchange shell 14 is communicated with the condensing module 21 through the extraction tank 1, due to the arrangement of the radiating pipe 15, since the radiating pipe 15 is the backflow radiating pipe 15, when the temperature of the condensing pipe 16 is reduced by the purifying device, the temperature of the condensing pipe 16 can be controlled in a mode of continuously injecting condensate into the radiating pipe 15, the lower surface of the condensing module 21 is fixedly connected with the upper surface of the extraction tank 1, the first gear 6 and the second gear 7 are both set to be bevel gears, the radiating pipe 15 is wound on the outer surface of the condensing pipe 16, and the left end of the radiating pipe 15 is communicated with the outer surface of the air exchange shell 14, the condensing pipe 16 passes through the ventilation shell 14 and the extraction tank 1 and is communicated with the heat-insulating inner container 2.

Specifically, as shown in fig. 2 and 3, the upper surface of the extracting tank 1 is fixedly connected with the upper surface of the heating device 19, the outer surface of the heating device 19 is fixedly connected with a plurality of supporting components 20, the supporting components 20 are at the same level, the right end of the condensing tube 16 is communicated with the top end of the guide tube 17 through an elbow, the bottom end of the guide tube 17 is communicated with the upper surface of the collecting barrel 18, due to the arrangement of the sealing plate 13, gas is not easy to enter the clamping groove 3 when being extruded at high pressure and high temperature, the gas is prevented from entering the clamping groove 3 and being condensed inside the clamping groove 3, so that the sealing effect is achieved on the bearing 41 and the rotating shaft 42, the tetrahydrofuran is not easy to condense in the bearing 41 to affect the rotating effect of the connecting rod 5, the stability of the purifying device during operation is ensured, the collecting barrel 18 is set as a tempered glass collecting barrel, the rotating device 4 comprises the bearing 41, the bearing 41 is clamped on the upper surface of the inner wall of the clamping groove 3, a rotating shaft 42 is sleeved in the bearing 41, and the bottom end of the rotating shaft 42 is in transmission connection with the top end of the connecting rod 5.

The working principle of the utility model is as follows:

s1, when the purification device is used, the tetrahydrofuran stock solution needing to be rectified and purified is poured into the purification device, a catalyst is added to assist in rectification of tetrahydrofuran, after the preparation work treatment is finished, the heating device 19 is started, the temperature in the purification device is increased through the heating device 19, and a pressure pump is started to assist in purification along with the progress of extraction work;

s2, when the tetrahydrofuran evaporates gradually along with the operation of the pressure pump and the heating device 19, the vaporized tetrahydrofuran enters the neck 3 along with the thermal insulation liner 2 and enters the condensation tube 16 along the inner shape of the neck 3, due to the thrust generated when the air pressure rises and the high pressure generated when the pressure pump operates, the vaporized tetrahydrofuran contacts the driving fan blade 11 when entering the neck 3, and the driving fan blade 11 is pushed to rotate under the action of the pressure, meanwhile, the driving fan blade 11 drives the driving rod 8 to rotate through the first gear 6 and the second gear 7, so that the driving rod 8 cleans the inner part of the pipeline of the condensation tube 16 through the helical blade 9 in the rotating process, and the tetrahydrofuran vaporized tetrahydrofuran and the pressure generated by the pressure pump push the operation when the helical blade 9 operates;

s3, continuously rectifying the tetrahydrofuran along with the purification device, wherein the condensation pipe 16 is in a high-temperature state for a long time, at the moment, a worker needs to start the cooling assembly, the condensate is injected into the heat dissipation pipe 15 through the cooling assembly, and the temperature of the condensation pipe 16 is reduced through indirect contact.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. A rectification purification device for tetrahydrofuran comprises an extraction tank (1), and is characterized in that: draw the mutual joint of the surface of the inner wall of jar (1) and heat preservation inner bag (2), draw-in groove (3) have been seted up to the upper surface of heat preservation inner bag (2), the upper surface of draw-in groove (3) inner wall and the mutual joint of lower surface of rotary device (4), the bottom of rotary device (4) and the top fixed connection of connecting rod (5), the surface of connecting rod (5) and the inner wall fixed connection of first gear (6), first gear (6) and second gear (7) meshing, the right flank of second gear (7) and the left end fixed connection of actuating lever (8), the surface of actuating lever (8) and the inner wall fixed connection of helical blade (9), the surface of helical blade (9) and the mutual joint of inner wall of condenser pipe (16), actuating lever (8) are located condenser pipe (16), the outer surface of the driving rod (8) is fixedly connected with the bottom end of the positioning holder (10) through the connecting cylinder, the top end of the positioning holder (10) is fixedly connected with the lower surface of the sealing plate (13), the upper surface of the sealing plate (13) is fixedly connected with the upper surface of the inner wall of the clamping groove (3), the bottom end of the connecting rod (5) is fixedly connected with the upper surface of the driving fan blade (11), and the driving fan blade (11) is located in the heat-preservation inner container (2).

2. The rectification and purification device for tetrahydrofuran according to claim 1, wherein: the outer surface of connecting rod (5) has cup jointed sleeve (12), sleeve (12) set up to sealed sleeve, the inner wall fixed connection of the surface of sleeve (12) and closing plate (13), be provided with the force pump in extracting jar (1).

3. The rectification and purification device for tetrahydrofuran according to claim 1, wherein: the outer surface of the extraction tank (1) is fixedly connected with the inner wall of the air exchange shell (14), the air exchange shell (14) is communicated with the condensation component (21) through the extraction tank (1), the lower surface of the condensation component (21) is fixedly connected with the upper surface of the extraction tank (1), and the first gear (6) and the second gear (7) are both arranged to be bevel gears.

4. The rectification and purification device for tetrahydrofuran according to claim 3, wherein: the surface winding of condenser pipe (16) has cooling tube (15), the left end of cooling tube (15) is linked together with the surface of tradeing gas shell (14), condenser pipe (16) pass trades gas shell (14) and draws jar (1) and be linked together with heat preservation inner bag (2).

5. The rectification and purification device for tetrahydrofuran according to claim 1, wherein: the upper surface of extracting jar (1) and heating device's (19) upper surface fixed connection, the outer fixed surface of heating device (19) is connected with a plurality of supporting component (20), and a plurality of supporting component (20) are in same level.

6. The rectification and purification device for tetrahydrofuran according to claim 5, wherein: the right end of the condensation pipe (16) is communicated with the top end of the guide pipe (17) through an elbow, the bottom end of the guide pipe (17) is communicated with the upper surface of the collecting barrel (18), and the collecting barrel (18) is set to be a toughened glass collecting barrel.

7. The rectification and purification device for tetrahydrofuran according to claim 1, wherein: rotating device (4) include bearing (41), bearing (41) joint is at the upper surface of draw-in groove (3) inner wall, cup jointed pivot (42) in bearing (41), the top transmission of the bottom of pivot (42) and connecting rod (5) is connected.