Reflux device for rectifying and purifying chemical intermediate bis (di-n-butylamine) disulfide

Abstract

The utility model relates to the field of rectification and purification, and discloses a reflux device for rectification and purification of chemical intermediate bis (di-n-butylamine) disulfide, which comprises a bottom plate, a heater fixedly connected to the top of the bottom plate, a rectifying tower fixedly connected to the top of the heater, a gas-guide tube fixedly connected to the top of the rectifying tower, and a gas-guide tube fixedly connected to the top of the gas-guide tube. One end of the air guide pipe is fixedly connected with a condensation pipe, one end of the condensation pipe is fixedly connected with a liquid return pipe, the other end of the liquid return pipe is fixedly connected with a water tank, the exterior of the water tank is fixedly connected with a water pump, the output end of the water pump is fixedly connected with a liquid conveying pipe, and the exterior of the condensation pipe is fixedly connected with a backflow control assembly. According to the device, the reflux controller, the reflux pipe and other structures are matched with one another, and a proper reflux ratio is set, so that part of vaporized and sublimated steam returns to the top of the rectifying tower during rectification and purification of bis (di-n-butylamine) disulfide, the distillation efficiency and the separation effect are improved, and finally a product with higher purity is obtained.

Description

Technical Field

[0001] The utility model relates to the field of distillation and purification, in particular to a reflux device for distillation and purification of chemical intermediate di-n-butylamine disulfide. Background Art

[0002] Distillation purification is a method of separating and purifying a mixture. It uses the difference in boiling points of different components, heats and evaporates them under appropriate temperature and pressure conditions, and then condenses the vapor into liquid through a condenser and other devices, and finally separates the pure products of different components. Bis(di-n-butylamine) disulfide is a chemical intermediate that is widely used in rubber, dyes, pharmaceuticals and other fields. Since it may be contaminated during the production process, it needs to be distilled and purified to remove impurities and residues, improve the purity and quality of the product, and also help reduce environmental pollution and safety risks. When the existing distillation purification device is in use, the effect of condensation reflux is not good enough, and the reflux ratio cannot be controlled by the reflux device, which will affect the efficiency of the distillation process and the quality of the product, and may lead to the failure to achieve the expected separation effect.

[0003] In view of the above problems, the technicians in this field proposed a reflux device for distillation and purification of chemical intermediate di-n-butylamine disulfide to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a reflux device for distillation and purification of chemical intermediate di-n-butylamine disulfide, aiming to improve the problem that the reflux device in the prior art cannot control the reflux ratio, resulting in unsatisfactory distillation and purification effect, thereby affecting product quality.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a reflux device for distillation and purification of di-di-n-butylamine disulfide, a chemical intermediate, comprises a base plate, a heater is fixedly connected to the top of the base plate, a distillation tower is fixedly connected to the top of the heater, an air duct is fixedly connected to the top of the distillation tower, one end of the air duct is fixedly connected to a condenser, one end of the condenser is fixedly connected to a liquid return pipe, the other end of the liquid return pipe is fixedly connected to a water tank, the outside of the water tank is fixedly connected to a water pump, the output end of the water pump is fixedly connected to a liquid infusion pipe, and the outside of the condenser is fixedly connected to a reflux control component.

[0006] Furthermore, the reflux control assembly includes a guide tube, which is fixedly connected to the outside of the condenser, one end of the guide tube is fixedly connected to a reflux controller, the bottom end of the reflux controller is fixedly connected to a production pipe, the bottom end of the reflux controller is fixedly connected to a reflux tube, and the top of the reflux controller is fixedly connected to a solenoid valve.

[0007] Furthermore, a plurality of tower plates are fixedly connected inside the distillation tower, and a feed pipe is fixedly connected to the upper end of the outside of the distillation tower.

[0008] Furthermore, a waste treatment box is fixedly connected to the top of the bottom plate, a discharge pipe is fixedly connected to the outside of the waste treatment box, and the other end of the discharge pipe is fixedly connected to the outside of the distillation tower.

[0009] Furthermore, two support frames are fixedly connected to the top of the bottom plate, and the outsides of the two support frames are fixedly connected to the outsides of the condenser tube.

[0010] Furthermore, the outside of the water pump is fixedly connected to the top of the bottom plate, and the bottom end of the water tank is fixedly connected to the top of the bottom plate.

[0011] Furthermore, one end of the infusion tube is fixedly connected to one end of the condensation tube.

[0012] Furthermore, one end of the reflux pipe is fixedly connected to the outside of the distillation tower.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, a suitable reflux ratio is set by the mutual cooperation of structures such as a reflux controller, a guide pipe, a reflux pipe, and a solenoid valve, so that part of the vaporized and sublimated steam during the distillation and purification of di-n-butylamine disulfide returns to the top of the distillation tower, thereby improving the distillation efficiency and separation effect, and finally obtaining a product with higher purity.

[0015] 2. In the utility model, through the mutual cooperation of the condenser, water pump, water tank, infusion tube and other structures, the cooling of the condenser is carried out by water cooling circulation, so that the temperature of the condenser is always in a stable state, ensuring the condensation effect, so that part of the condensate can be returned to the distillation tower, thereby improving the distillation efficiency and separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of a reflux device for distillation and purification of di-n-butylamine disulfide, a chemical intermediate, proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of a reflux controller of a reflux device for distillation and purification of disulfide of a chemical intermediate di-n-butylamine proposed in the utility model;

[0018] Figure 3 The utility model discloses a pedal structure schematic diagram of a reflux device for distillation and purification of disulfide of a chemical intermediate di-n-butylamine.

[0019] Legend:

[0020] 1. Base plate; 2. Heater; 3. Distillation tower; 4. Air guide pipe; 5. Condenser; 6. Reflux control assembly; 601. Reflux controller; 602. Guide pipe; 603. Reflux pipe; 604. Production pipe; 605. Solenoid valve; 7. Support frame; 8. Infusion pipe; 9. Water pump; 10. Water tank; 11. Return pipe; 12. Waste treatment box; 13. Discharge pipe; 14. Feed pipe; 15. Tower plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Reference Figure 1 and Figure 2 The utility model provides an embodiment: a reflux device for distillation and purification of di-di-n-butylamine disulfide, a chemical intermediate, comprises a bottom plate 1, a heater 2 is fixedly connected to the top of the bottom plate 1, a distillation tower 3 is fixedly connected to the top of the heater 2, an air guide pipe 4 is fixedly connected to the top of the distillation tower 3, a condenser 5 is fixedly connected to one end of the air guide pipe 4, a liquid return pipe 11 is fixedly connected to one end of the condenser 5, a water tank 10 is fixedly connected to the other end of the liquid return pipe 11, a water pump 9 is fixedly connected to the outside of the water tank 10, a liquid infusion pipe 8 is fixedly connected to the output end of the water pump 9, and a reflux control component 6 is fixedly connected to the outside of the condenser 5.

[0023] Specifically, the bottom plate 1 plays a role in fixing the heater 2, so that the heater 2 is stable when in use, ensuring that when dibutylamine disulfide is distilled and purified, the heated raw material is vaporized and then enters the air duct 4 at the top, and then enters the condenser 5 through the air duct 4. One end of the condenser 5 is connected to the infusion tube 8, which can enable the water pump 9 to extract the coolant from the water tank 10 and transport it to the infusion tube 8, and then cool down and condense the condenser 5, so that the condenser 5 has a better heat dissipation effect, and the transported gas is liquefied. Then, the reflux ratio is controlled by the reflux control component 6 to improve the distillation efficiency and ensure that the required purity product is extracted. At the same time, the coolant after passing through the condenser 5 is discharged from the other end and then enters the water tank 10 through the return pipe 11, thereby realizing the water circulation operation, which can effectively reduce energy consumption, so that the condenser 5 is always in a stable temperature range, and a better cooling effect is produced.

[0024] Reference Figure 2The reflux control component 6 includes a guide pipe 602, which is fixedly connected to the outside of the condenser 5, one end of the guide pipe 602 is fixedly connected to a reflux controller 601, the bottom end of the reflux controller 601 is fixedly connected to a production pipe 604, the bottom end of the reflux controller 601 is fixedly connected to a reflux pipe 603, and the top of the reflux controller 601 is fixedly connected to a solenoid valve 605; one end of the reflux pipe 603 is fixedly connected to the outside of the distillation tower 3.

[0025] Specifically, the condenser 5 is fixed to the guide tube 602 so that the condensed liquid in the condenser 5 can flow out and then enter the reflux controller 601. The solenoid valve 605 controls the inside of the reflux controller 601 to control the ratio of the liquid flow to the top steam volume to ensure that the desired purity product is extracted. The cooled liquid is then transported to the top of the distillation tower 3 through the reflux pipe 603 for further distillation to improve the purity of the product. The purified product can be collected and stored through the extraction pipe 604.

[0026] Reference Figure 1 and Figure 3 A plurality of plates 15 are fixedly connected to the interior of the distillation tower 3, and a feed pipe 14 is fixedly connected to the upper end of the exterior of the distillation tower 3; a waste treatment box 12 is fixedly connected to the top of the bottom plate 1, and a discharge pipe 13 is fixedly connected to the exterior of the waste treatment box 12, and the other end of the discharge pipe 13 is fixedly connected to the exterior of the distillation tower 3.

[0027] Specifically, by means of a plurality of tower plates 15 fixedly connected in the distillation tower 3, the contact area can be increased and the separation of volatile components can be promoted, thereby ensuring the purity after purification. The raw materials can be fed into the distillation tower 3 for distillation and purification through the feed pipe 14. The waste treatment box 12 is fixedly connected to the bottom plate 1 to make the device structure stable. Then, the waste in the distillation tower 3 is discharged through the discharge pipe 13 and enters the waste treatment box 12 for treatment, thereby reducing the emission of harmful substances and preventing pollution to the environment.

[0028] Reference Figure 1 Two support frames 7 are fixedly connected to the top of the base plate 1, and the outsides of the two support frames 7 are fixedly connected to the outsides of the condenser 5; the outside of the water pump 9 is fixedly connected to the top of the base plate 1, and the bottom end of the water tank 10 is fixedly connected to the top of the base plate 1; one end of the infusion tube 8 is fixedly connected to one end of the condenser 5.

[0029] Specifically, the condenser 5 is fixed by two support frames 7 so that the condenser 5 will not shake when the device is running, thereby ensuring the stability of the device operation and the condensation effect. The water pump 9 and the water tank 10 are fixed on the top of the base plate 1 so that the water pump 9 will not move during operation, thereby ensuring the stability of the structure operation. One end of the infusion tube 8 is connected to one end of the condenser 5 to achieve a water cooling circulation effect, thereby effectively achieving condensation and reducing energy consumption.

[0030] Working principle: When using this device, first inject liquid di-n-butylamine disulfide into the distillation tower 3 through the feed pipe 14, then start the heater 2, and heat the raw materials in the distillation tower 3 through the heater 2 to increase its temperature and vaporize it into the air guide pipe 4. At this time, start the water pump 9, and the water pump 9 draws out the condensed water in the water tank 10, and sends it to the condenser 5 through the infusion pipe 8, and then discharges it from the other end of the condenser 5, returns to the water tank 10 through the return pipe 11, and then circulates through the water pump 9, thereby realizing the water cooling cycle for the condenser 5, and then can effectively absorb and dissipate heat, thereby improving the condensation effect of the condenser 5. After condensation, the steam is liquefied and enters the reflux controller 601 from the guide pipe 602. The reflux ratio is controlled by the solenoid valve 605. Then, the liquefied steam is refluxed to the top of the distillation tower 3 through the reflux pipe 603, and the contact area is increased through the multiple tower plates 15 inside to promote the separation of volatile components, thereby improving the efficiency of distillation and ensuring the accuracy of the generated products. At the same time, the product after distillation and purification can be discharged through the extraction pipe 604 to realize the collection operation. The waste can be discharged through the discharge pipe 13 and enter the waste treatment box 12. After treatment, the discharge of pollutants can be reduced, thereby reducing pollution to the environment.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A reflux device for distillation and purification of chemical intermediate di-n-butylamine disulfide, comprising a bottom plate (1), Features: The top of the base plate (1) is fixedly connected to a heater (2), the top of the heater (2) is fixedly connected to a distillation tower (3), the top of the distillation tower (3) is fixedly connected to an air guide pipe (4), one end of the air guide pipe (4) is fixedly connected to a condenser (5), one end of the condenser (5) is fixedly connected to a liquid return pipe (11), the other end of the liquid return pipe (11) is fixedly connected to a water tank (10), the outside of the water tank (10) is fixedly connected to a water pump (9), the output end of the water pump (9) is fixedly connected to a liquid infusion pipe (8), and the outside of the condenser (5) is fixedly connected to a reflux control component (6).

2. A reflux device for distillation and purification of di-n-butylamine disulfide, a chemical intermediate, according to claim 1, Features: The reflux control assembly (6) comprises a guide tube (602), wherein the guide tube (602) is fixedly connected to the outside of the condenser (5), one end of the guide tube (602) is fixedly connected to a reflux controller (601), the bottom end of the reflux controller (601) is fixedly connected to a production tube (604), the bottom end of the reflux controller (601) is fixedly connected to a reflux tube (603), and the top of the reflux controller (601) is fixedly connected to a solenoid valve (605).

3. A reflux device for distillation and purification of di-n-butylamine disulfide, a chemical intermediate, according to claim 1, Features: A plurality of trays (15) are fixedly connected inside the distillation tower (3), and a feed pipe (14) is fixedly connected to the upper end of the outside of the distillation tower (3).

4. A reflux device for distillation and purification of di-n-butylamine disulfide, a chemical intermediate, according to claim 1, Features: A waste treatment box (12) is fixedly connected to the top of the base plate (1), a discharge pipe (13) is fixedly connected to the outside of the waste treatment box (12), and the other end of the discharge pipe (13) is fixedly connected to the outside of the distillation tower (3).

5. A reflux device for distillation and purification of di-n-butylamine disulfide, a chemical intermediate, according to claim 1, Features: Two support frames (7) are fixedly connected to the top of the base plate (1), and the outsides of the two support frames (7) are fixedly connected to the outside of the condensation pipe (5).

6. A reflux device for distillation and purification of di-n-butylamine disulfide, a chemical intermediate, according to claim 1, Features: The outside of the water pump (9) is fixedly connected to the top of the base plate (1), and the bottom end of the water tank (10) is fixedly connected to the top of the base plate (1).

7. A reflux device for distillation and purification of di-n-butylamine disulfide, a chemical intermediate, according to claim 1, Features: One end of the liquid infusion tube (8) is fixedly connected to one end of the condensation tube (5).

8. A reflux device for distillation and purification of di-n-butylamine disulfide, a chemical intermediate, according to claim 2, Features: One end of the reflux pipe (603) is fixedly connected to the outside of the distillation tower (3).

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