CN216236516U

CN216236516U - Tetrahydrofuran safety recovery device

Info

Publication number: CN216236516U
Application number: CN202122876370.XU
Authority: CN
Inventors: 吴海兰
Original assignee: Shanghai Yuanchen Chemical Raw Materials Co ltd
Current assignee: Shanghai Yuanchen Chemical Raw Materials Co ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-04-08
Anticipated expiration: 2031-11-19

Abstract

The utility model relates to the technical field of tetrahydrofuran, in particular to a tetrahydrofuran safe recovery device, which comprises: a purification recovery module that separates tetrahydrofuran based on distillation; the electrolytic treatment module who is connected with the purification recovery module, the electrolytic treatment module includes the electrolysis jar that is connected with the purification recovery module, install the electrolysis module in the electrolysis jar, communicating pipe is installed to the bottom of electrolysis jar, install the control valve on communicating pipe, the one end fixedly connected with setting tank of electrolysis jar is kept away from to communicating pipe, setting tank demountable installation has the medicament to add the door. Thereby being convenient for ensuring the nontoxicity of the waste liquid discharged after the tetrahydrofuran is recovered.

Description

Tetrahydrofuran safety recovery device

Technical Field

The utility model relates to the technical field of tetrahydrofuran, in particular to a safe tetrahydrofuran recovery device.

Background

Tetrahydrofuran 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 small viscosity at normal temperature and normal pressure. Although its odor and chemical properties are very similar to those of diethyl ether, the anesthetic effect is poor.

Tetrahydrofuran has weak toxicity, and is easy to be poisoned by excessive tetrahydrofuran inhaled by people due to neglecting the volatility and the toxicity of tetrahydrofuran in the process of distilling and recycling the tetrahydrofuran in waste liquid for a long time.

To this end, the person skilled in the art proposes a safe recovery device for tetrahydrofuran, in order to solve the problems mentioned in the background above.

Disclosure of Invention

The utility model aims to provide a safe tetrahydrofuran recovery device to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

a safe tetrahydrofuran recovery apparatus comprising:

a purification recovery module that separates tetrahydrofuran based on distillation;

the electrolytic treatment module who is connected with the purification recovery module, the electrolytic treatment module includes the electrolysis jar that is connected with the purification recovery module, install the electrolysis module in the electrolysis jar, communicating pipe is installed to the bottom of electrolysis jar, install the control valve on communicating pipe, the one end fixedly connected with setting tank of electrolysis jar is kept away from to communicating pipe, setting tank demountable installation has the medicament to add the door.

As a further improvement of the utility model: the purification and recovery module comprises a distillation box, a spiral pipe is arranged in the distillation box, a heat preservation water tank is arranged outside the distillation box, a heating module is installed in the heat preservation water tank, a water pump is arranged in the heat preservation water tank, the water pump is connected with one end of the spiral pipe, the distillation box is connected with a condenser through a first branch pipe, the condenser is connected with a collecting tank through a second branch pipe, the condenser is further connected with a third branch pipe, and the third branch pipe extends into the electrolytic tank.

As a further improvement of the utility model: a temperature detection module is installed in the distillation box and is electrically connected with the heating module.

As a further improvement of the utility model: the spiral pipe is further connected with a return pipe, and one end of the return pipe extends into the heat-preservation water tank.

As a further improvement of the utility model: the heating module comprises a heat-conducting plate fixedly connected with the heat-preservation water tank, a plurality of groups of heating rods are installed in the heat-conducting plate, the heating rods are electrically connected with the temperature detection module, and a through hole is formed in the middle of the heat-conducting plate.

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

after a part of tetrahydrofuran in the waste liquid is distilled and recovered, the rest waste liquid flows into an electrolytic tank, hydrogen is continuously generated in the waste liquid under the electrolysis of an electrolysis module on the waste liquid, ferrous ions can be generated, then a control valve is opened, the electrolyzed waste liquid containing the ferrous ions enters a settling tank, an oxidant is added into the settling tank through a medicament adding door, the tetrahydrofuran is decomposed under the action of the oxidant, part of the ferrous ions are oxidized into ferric ions, and the adsorption flocculation activity of hydrates of the ferrous ions and the ferric ions is utilized, so that other impurities in the waste water and products of the decomposed tetrahydrofuran are precipitated and condensed together into sludge settled at the bottom of the settling tank. According to the utility model, part of tetrahydrofuran recovered by distillation is treated in a harmless way by decomposing and settling the tetrahydrofuran, so that the nontoxicity of waste liquid discharged after the tetrahydrofuran is recovered is ensured.

Drawings

FIG. 1 is a top view of the present invention;

FIG. 2 is a schematic structural view of a spiral pipe of the present invention;

fig. 3 is a schematic structural view of a heating module of the present invention.

In the figure: 1. a distillation box; 2. a temperature detection module; 3. a spiral tube; 4. a water pump; 5. a heat preservation water tank; 6. a heating module; 7. a first branch pipe; 8. a return pipe; 9. a condenser; 10. a second branch pipe; 11. a third branch pipe; 12. an exhaust valve; 13. an electrolytic tank; 14. an electrolysis module; 15. a communicating pipe; 16. a control valve; 17. a settling tank; 18. a medicament addition gate; 19. a heat conducting plate; 20. a heating rod; 21. a purification recovery module; 22. an electrolytic processing module; 23. and (4) a collection tank.

Detailed Description

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

Example one

Referring to fig. 1 to 3, a safe recovery device for tetrahydrofuran includes:

a purification recovery module 21, the purification recovery module 21 separating tetrahydrofuran based on distillation;

the electrolytic treatment module 22 who is connected with purification recovery module 21, electrolytic treatment module 22 includes the electrolysis jar 13 that is connected with purification recovery module 21, install electrolysis module 14 in the electrolysis jar 13, electrolysis module 14 intussuseption is filled with little electrolysis material, communicating pipe 15 is installed to the bottom of electrolysis jar 13, install control valve 16 on communicating pipe 15, the one end fixedly connected with settling tank 17 that is kept away from electrolysis jar 13 communicating pipe 15, settling tank 17 demountable installation has medicament to add door 18.

After a part of tetrahydrofuran in the waste liquid is distilled and recovered, the remaining waste liquid flows into an electrolytic tank 13, hydrogen is continuously generated in the waste liquid and ferrous ions are generated under the electrolysis of an electrolysis module 14 on the waste liquid, then a control valve 16 is opened, the electrolyzed waste liquid containing the ferrous ions enters a settling tank 17, an oxidant is added into the settling tank 17 through a medicament adding door 18, the tetrahydrofuran is decomposed and a part of the ferrous ions are oxidized into ferric ions under the action of the oxidant, and the adsorption flocculation activity of hydrates of the ferrous ions and the ferric ions is utilized to precipitate and agglomerate other impurities in the waste water and products of the decomposed tetrahydrofuran into sludge settled at the bottom of the settling tank 17. According to the utility model, part of tetrahydrofuran recovered by distillation is treated in a harmless way by decomposing and settling the tetrahydrofuran, so that the nontoxicity of waste liquid discharged after the tetrahydrofuran is recovered is ensured.

In a condition of this embodiment, purification recovery module 21 includes distillation box 1, installs the feed liquor pipe that is used for leading-in tetrahydrofuran on the distillation box 1, be provided with spiral pipe 3 in the distillation box 1, distillation box 1 is provided with holding water box 5 outward, install heating module 6 in the holding water box 5, be provided with water pump 4 in the holding water box 5, water pump 4 is connected with spiral pipe 3's one end, distillation box 1 is connected with condenser 9 through first branch pipe 7, condenser 9 is connected with collection tank 23 through second branch pipe 10, condenser 9 still is connected with third branch pipe 11, third branch pipe 11 extends to in the electrolysis tank 13, third branch pipe 11 is connected with electrolysis tank 13. The heating module 6 heats water in the heat preservation water tank 5, hot water enters the spiral pipe 3 under the conveying of the water pump 4, the spiral pipe 3 distills waste liquid which is stored in the distillation tank 1 and is also tetrahydrofuran, tetrahydrofuran steam is condensed into liquid in the condenser 9 and flows into the collecting tank 23, and other steam which is not condensed is introduced into the electrolytic tank 13 to be reacted.

In one aspect of this embodiment, the electrolytic tank 13 is fitted with a vent valve 12 at its upper portion. The exhaust valve 12 is used for exhausting gas generated by electrolysis.

In one aspect of the present embodiment, a temperature detection module 2 is installed in the distillation box 1, and the temperature detection module 2 is electrically connected to a heating module 6. The temperature detection module 2 detects the temperature in the distillation box 1 in real time and controls the heating efficiency of the heating module 6 according to the temperature.

In one case of this embodiment, a return pipe 8 is also connected to the spiral pipe 3, one end of said return pipe 8 extending into the holding tank 5. So that the water from the spiral pipe 3 enters the return pipe 8 and flows back into the hot water tank 5 from the return pipe 8, thereby reducing the heat energy consumption and the water adding requirement.

Example two

On the basis of the first embodiment, referring to fig. 1 and fig. 3, the heating module 6 includes a heat conducting plate 19 fixedly connected with the heat-insulating water tank 5, a plurality of groups of heating rods 20 are installed in the heat conducting plate 19, the heating rods 20 are electrically connected with the temperature detection module 2, and a through hole is formed in the middle of the heat conducting plate 19. The heat conducting plate 19 increases the contact area between the heating rod 20 and the water in the heat preservation water tank 5, and the maximum heating speed of the heating module 6 is increased.

While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A tetrahydrofuran safety recovery device is characterized by comprising:

2. The safe tetrahydrofuran recycling device according to claim 1, wherein the purification and recycling module comprises a distillation box, a spiral pipe is arranged in the distillation box, a heat preservation water tank is arranged outside the distillation box, a heating module is arranged in the heat preservation water tank, a water pump is arranged in the heat preservation water tank, the water pump is connected with one end of the spiral pipe, the distillation box is connected with a condenser through a first branch pipe, the condenser is connected with a collection tank through a second branch pipe, the condenser is further connected with a third branch pipe, and the third branch pipe extends into the electrolytic tank.

3. The safe tetrahydrofuran recycling device according to claim 2, wherein a temperature detecting module is installed in the distillation box, and the temperature detecting module is electrically connected with the heating module.

4. The safe tetrahydrofuran recycling device as claimed in claim 2, wherein a return pipe is further connected to the spiral pipe, and one end of the return pipe extends into the thermal insulation water tank.

5. The safe tetrahydrofuran recycling device of claim 2, wherein the heating module comprises a heat conducting plate fixedly connected with the heat preservation water tank, a plurality of groups of heating rods are installed in the heat conducting plate, the heating rods are electrically connected with the temperature detection module, and a through hole is formed in the middle of the heat conducting plate.