Production and preparation device for diethyl phthalate

Abstract

The utility model relates to the technical field of production and preparation, and discloses a diethyl phthalate production and preparation device which comprises a stirring barrel, the top of the stirring barrel is fixedly connected with a motor, the output end of the motor is fixedly connected with a rotating shaft, and the top of the outer side of the rotating shaft is fixedly connected with a first stirring rod. A first scraping plate is fixedly connected to one side of the first stirring rod at the bottom, a second stirring rod is fixedly connected to the bottom of the outer side of the rotating shaft, a second scraping plate is fixedly connected to the outer side of the second stirring rod at the bottom, a partition plate is fixedly connected to the interior of the stirring barrel, and the rotating shaft penetrates through the middle of the partition plate. A plurality of through holes are formed in the top of the partition plate, and a heating plate is arranged on the inner wall of the stirring barrel. According to the stirring device, the first stirring rod, the first scraping plate, the second stirring rod and the second scraping plate can be driven to rotate through the driving motor, raw materials can be stirred, and the temperature in the stirring barrel can be increased through the heating plate, so that the reaction speed is increased, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of production and preparation, in particular to a production and preparation device for diethyl phthalate. Background Art

[0002] Diethyl phthalate (DEGDB) is an organic compound with the chemical formula C10H14O4. It is an ester compound obtained by the reaction of isophthalic acid and ethanol. DEGDB is usually a colorless to light yellow liquid and is often used in industry as a solvent, plasticizer, coating and resin raw material.

[0003] In the existing production process of diethyl phthalate, phthalic acid and ethanol are placed in a reaction tank, and then a catalyst is added, and the temperature is adjusted to start esterification. However, in the esterification process, esterification is only carried out by the catalyst and temperature adjustment, so the reaction is slow and the esterification time is long, resulting in reduced work efficiency. Therefore, a diethyl phthalate production and preparation device is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a production and preparation device for diethyl phthalate, aiming to improve the problem in the prior art that esterification is only carried out by catalyst and temperature regulation, so the reaction is slow, the esterification time is long, and the work efficiency is reduced.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a production and preparation device for diethyl phthalate, comprising a stirring barrel, a motor is fixedly connected to the top of the stirring barrel, a rotating shaft is fixedly connected to the output end of the motor, a first stirring rod is fixedly connected to the top of the outer side of the rotating shaft, a first scraper is fixedly connected to one side of the first stirring rod at the bottom, a second stirring rod is fixedly connected to the bottom of the outer side of the rotating shaft, a second scraper is fixedly connected to the outer side of the second stirring rod at the bottom, a partition is fixedly connected to the inside of the stirring barrel, the rotating shaft passes through the middle of the partition, a plurality of through holes are opened on the top of the partition, and a heating plate is provided on the inner wall of the stirring barrel.

[0006] As a further description of the above technical solution:

[0007] The bottom of the first stirring rod at the bottom contacts the top of the partition, the bottom of the second stirring rod at the bottom contacts the inner bottom of the stirring barrel, and one side of the first scraper and the second scraper both contact the inner wall of the stirring barrel.

[0008] As a further description of the above technical solution:

[0009] A material storage barrel is arranged on the top of the mixing barrel, a discharge pipe is fixedly connected to the bottom of the material storage barrel, the bottom of the discharge pipe is fixedly connected to one side of the top of the mixing barrel, and a first valve is arranged on the outside of the discharge pipe.

[0010] As a further description of the above technical solution:

[0011] A feed pipe is fixedly connected to the top of the storage barrel, a sealing cover is arranged on the top of the feed pipe, a discharge pipe is fixedly connected to the bottom of one side of the mixing barrel, and a second valve is arranged on the outer side of the discharge pipe.

[0012] As a further description of the above technical solution:

[0013] A processing box is arranged on the other side of the mixing barrel, an air inlet pipe is fixedly connected to the middle of the other side of the mixing barrel, and one end of the air inlet pipe is fixedly connected to one side of the top of the processing box.

[0014] As a further description of the above technical solution:

[0015] A water pump is fixedly connected to the middle of the top surface of the treatment box, a water pipe is fixedly connected to the output end of the water pump, and a branch pipe is fixedly connected to the bottom of the water pipe.

[0016] As a further description of the above technical solution:

[0017] A plurality of baffles are fixedly connected inside the treatment box, and a water outlet hole is opened at the bottom of the baffle. The baffles are staggered and one end of the branch pipe is located at the top of the adjacent baffle.

[0018] As a further description of the above technical solution:

[0019] An air outlet pipe is fixedly connected to the top of one side of the processing box, and a third valve is arranged on the outer side of the air outlet pipe. A water outlet pipe is fixedly connected to the bottom of one side of the processing box, and a fourth valve is arranged on the outer side of the water outlet pipe.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, the first stirring rod, the first scraper, the second stirring rod and the second scraper can be driven to rotate by a driving motor. The raw materials can be initially stirred by the first stirring rod, and the raw materials can be further stirred by the second stirring rod. The temperature inside the stirring barrel can be increased by the heating plate, thereby increasing the reaction speed and thus improving the work efficiency.

[0022] 2. In the utility model, the acidic gas in the gas can be flushed through the water pump, the water pipe and the branch pipe, and the movement path of the gas can be extended through the baffle, thereby increasing the spraying time of the gas, so that the acidic gas in the gas can be removed more cleanly and the discharged gas can be prevented from polluting the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional structural diagram of a diethyl phthalate production and preparation device proposed by the utility model;

[0024] Figure 2 This is a cross-sectional view of a stirring barrel of a diethyl phthalate production and preparation device proposed by the utility model;

[0025] Figure 3 This is a cross-sectional view of a storage barrel of a diethyl phthalate production and preparation device proposed in the utility model;

[0026] Figure 4 The utility model provides a schematic diagram of the internal structure of a treatment box of a diethyl phthalate production and preparation device.

[0027] Legend:

[0028] 1. Mixing barrel; 2. Motor; 3. Rotating shaft; 4. First stirring rod; 5. First scraper; 6. Second stirring rod; 7. Second scraper; 8. Partition; 9. Through hole; 10. Storage barrel; 11. Discharge pipe; 12. First valve; 13. Feed pipe; 14. Sealing cover; 15. Discharge pipe; 16. Second valve; 17. Processing box; 18. Air inlet pipe; 19. Water pump; 20. Water pipe; 21. Branch pipe; 22. Baffle; 23. Air outlet pipe; 24. Third valve; 25. Water outlet pipe; 26. Fourth valve; 27. Heating plate; 28. Water outlet hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the specification 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 of 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.

[0030] Reference Figure 1 and Figure 2The utility model provides an embodiment: a production and preparation device for diethyl phthalate, comprising a stirring barrel 1, a motor 2 is fixedly connected to the top of the stirring barrel 1, a rotating shaft 3 is fixedly connected to the output end of the motor 2, a first stirring rod 4 is fixedly connected to the top of the outer side of the rotating shaft 3, a first scraper 5 is fixedly connected to one side of the first stirring rod 4 at the bottom, a second stirring rod 6 is fixedly connected to the bottom of the outer side of the rotating shaft 3, a second scraper 7 is fixedly connected to the outer side of the second stirring rod 6 at the bottom, a partition 8 is fixedly connected to the inside of the stirring barrel 1, the rotating shaft 3 passes through the middle of the partition 8, a plurality of through holes 9 are opened on the top of the partition 8, and a heating plate 27 is provided on the inner wall of the stirring barrel 1.

[0031] When in use, phthalic acid and ethanol are allowed to enter the stirring barrel 1, and then the motor 2 is driven to drive the rotating shaft 3, the first stirring rod 4, the first scraper 5, the second stirring rod 6 and the second scraper 7 to rotate. The first stirring rod 4 rotates, so that the phthalic acid and ethanol entering the top of the stirring barrel 1 can be preliminarily stirred, and the stirred raw materials will enter the interior of the stirring barrel 1 through the through hole 9 opened on the partition 8. The quality of the falling raw materials can be controlled through the through hole 9. At this time, the rotating second stirring rod 6 can stir the falling raw materials. At this time, the heating plate 27 will increase the temperature inside the stirring barrel 1, so as to accelerate the speed of the esterification reaction. When phthalic acid and ethanol react, gas will be generated. The gas will enter the treatment box 17 through the air inlet pipe 18, and then the water pump 19 is driven to allow water to enter the water pipe 20, and then enter the treatment box 17 through the branch pipe 21, so that the gas can be flushed, thereby facilitating the removal of acidic gases in the exhaust gas.

[0032] Reference Figure 2 and Figure 3, the bottom of the first stirring rod 4 at the bottom contacts the top of the partition 8, the bottom of the second stirring rod 6 at the bottom contacts the inner bottom of the stirring barrel 1, and one side of the first scraper 5 and the second scraper 7 contacts the inner wall of the stirring barrel 1. A storage barrel 10 is provided at the top of the stirring barrel 1, a discharge pipe 11 is fixedly connected to the bottom of the storage barrel 10, the bottom of the discharge pipe 11 is fixedly connected to one side of the top of the stirring barrel 1, and a first valve 12 is provided on the outside of the discharge pipe 11. A feed pipe 13 is fixedly connected to the top of the storage barrel 10, a sealing cover 14 is provided on the top of the feed pipe 13, a discharge pipe 15 is fixedly connected to the bottom of one side of the stirring barrel 1, and a second valve 16 is provided on the outside of the discharge pipe 15. The bottom of the first stirring rod 4 and the bottom of the second stirring rod 6 are in contact with the top of the partition 8 and the inner bottom of the mixing barrel 1 respectively. At this time, the first stirring rod 4 can scrape off the phthalic acid and ethanol on the top of the partition 8, and the second stirring rod 6 can stir the raw materials at the bottom of the mixing barrel 1. The raw materials attached to the inside of the mixing barrel 1 can be scraped off by the first scraper 5 and the second scraper 7. Phthalic acid and ethanol can be stored separately through the storage barrel 10, and phthalic acid and ethanol can be allowed to enter the mixing barrel 1 through the discharge pipe 11 by opening the first valve 12. Phthalic acid and ethanol can be poured into the storage barrel 10 through the feed pipe 13, and the sealing cover 14 can prevent foreign matter from entering the mixing barrel 1 and enhance the sealing performance.

[0033] Reference Figure 1 and Figure 4 , a processing box 17 is provided on the other side of the mixing barrel 1, and an air inlet pipe 18 is fixedly connected to the middle of the other side of the mixing barrel 1, and one end of the air inlet pipe 18 is fixedly connected to one side of the top of the processing box 17. A water pump 19 is fixedly connected to the middle of the top surface of the processing box 17, and a water pipe 20 is fixedly connected to the output end of the water pump 19, and a branch pipe 21 is fixedly connected to the bottom of the water pipe 20. A plurality of baffles 22 are fixedly connected inside the processing box 17, and a water outlet hole 28 is opened at the bottom of the bottom baffle 22. The baffles 22 are staggered, and one end of the branch pipe 21 is located at the top of the adjacent baffle 22. An air outlet pipe 23 is fixedly connected to the top of one side of the processing box 17, and a third valve 24 is arranged on the outside of the air outlet pipe 23. A water outlet pipe 25 is fixedly connected to the bottom of one side of the processing box 17, and a fourth valve 26 is arranged on the outside of the water outlet pipe 25. Through the air inlet pipe 18, the gas generated when the raw materials react can enter the processing box 17. By driving the water pump 19, water enters the water pipe 20, and then enters the inside of the treatment box 17 through the branch pipe 21. The staggered distribution of the baffles 22 can extend the path of the gas, so that the gas can be cleaned multiple times. A water outlet hole 28 is opened at the bottom of the bottom baffle 22, so that water can flow inside the treatment box 17. By opening the third valve 24, the treated gas can be discharged through the gas outlet pipe 23, and by opening the fourth valve 26, the water inside the treatment box 17 can be discharged through the water outlet pipe 25.

[0034] Working principle: when in use, first open the sealing cover 14, let phthalic acid and ethanol enter the two storage barrels 10 through the two feeding pipes 13 respectively, then cover the sealing cover 14, and then open the first valve 12 to allow phthalic acid and ethanol to enter the mixing barrel 1 at the same time. At this time, the partition 8 inside the mixing barrel 1 will block phthalic acid and ethanol, and then drive the motor 2 to drive the rotating shaft 3 to rotate, thereby driving the first stirring rod 4, the first scraper 5, the second stirring rod 6 and the second scraper 7 to rotate. Through the rotation of the first stirring rod 4, the phthalic acid and ethanol entering the top of the mixing barrel 1 can be preliminarily stirred. The stirred raw materials will enter the interior of the mixing barrel 1 through the through hole 9 opened on the partition 8. Through the through hole 9, the quality of the falling raw materials can be controlled. At this time, the rotating second stirring rod 6 can stir the falling raw materials. At this time, the heating plate 27 will increase the temperature inside the mixing barrel 1, thereby accelerating the speed of the esterification reaction. The rotating first scraper 5 and the second scraper 7 can scrape the inner wall of the mixing barrel 1. , to prevent raw materials from sticking to the inner wall of the mixing barrel 1. When phthalic acid and ethanol react, gas will be generated. The generated gas will enter the processing box 17 through the air inlet pipe 18, and then drive the water pump 19 to make water enter the water pipe 20, and then enter the processing box 17 through the branch pipe 21. The gas entering the processing box 17 will pass through the middle of each baffle 22. At this time, the water transported by the branch pipe 21 will flush the gas, so as to facilitate the removal of acidic gases in the exhaust gas. Through the staggered baffles 22, The movement path of the gas can be extended, thereby increasing the spraying time of the gas, so that the acidic gas in the gas can be removed more cleanly, and then the third valve 24 is opened, and the gas after spraying will be discharged through the gas outlet pipe 23. Through the water outlet hole 28, all the water inside the treatment box 17 can flow to the water outlet pipe 25. By opening the fourth valve 26, the water inside the treatment box 17 can be discharged through the water outlet pipe 25. When the esterification reaction of the raw material is completed, the second valve 16 is opened to discharge the raw material through the discharge pipe 15.

[0035] 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 device for producing diethyl phthalate, comprising a stirring barrel (1), characterized in that: The top of the mixing barrel (1) is fixedly connected to a motor (2), the output end of the motor (2) is fixedly connected to a rotating shaft (3), the top of the outer side of the rotating shaft (3) is fixedly connected to a first stirring rod (4), a side of the first stirring rod (4) is fixedly connected to a first scraper (5), the bottom of the outer side of the rotating shaft (3) is fixedly connected to a second stirring rod (6), the outer side of the second stirring rod (6) is fixedly connected to a second scraper (7), the interior of the mixing barrel (1) is fixedly connected to a partition (8), the rotating shaft (3) passes through the middle of the partition (8), a plurality of through holes (9) are provided on the top of the partition (8), and a heating plate (27) is provided on the inner wall of the mixing barrel (1).

2. A diethyl phthalate production and preparation device according to claim 1, characterized in that: The bottom of the first stirring rod (4) at the bottom contacts the top of the partition (8), the bottom of the second stirring rod (6) at the bottom contacts the inner bottom of the stirring barrel (1), and one side of the first scraper (5) and the second scraper (7) both contact the inner wall of the stirring barrel (1).

3. A diethyl phthalate production and preparation device according to claim 1, characterized in that: A material storage barrel (10) is arranged on the top of the mixing barrel (1), a discharge pipe (11) is fixedly connected to the bottom of the material storage barrel (10), the bottom of the discharge pipe (11) is fixedly connected to one side of the top of the mixing barrel (1), and a first valve (12) is arranged on the outside of the discharge pipe (11).

4. A diethyl phthalate production and preparation device according to claim 3, characterized in that: A feed pipe (13) is fixedly connected to the top of the storage barrel (10), and a sealing cover (14) is provided on the top of the feed pipe (13); a discharge pipe (15) is fixedly connected to the bottom of one side of the mixing barrel (1), and a second valve (16) is provided on the outer side of the discharge pipe (15).

5. A diethyl phthalate production and preparation device according to claim 1, characterized in that: A processing box (17) is provided on the other side of the mixing barrel (1), and an air intake pipe (18) is fixedly connected to the middle of the other side of the mixing barrel (1), and one end of the air intake pipe (18) is fixedly connected to one side of the top of the processing box (17).

6. A diethyl phthalate production and preparation device according to claim 5, characterized in that: A water pump (19) is fixedly connected to the middle of the top surface of the treatment box (17), a water pipe (20) is fixedly connected to the output end of the water pump (19), and a branch pipe (21) is fixedly connected to the bottom of the water pipe (20).

7. A diethyl phthalate production and preparation device according to claim 6, characterized in that: A plurality of baffles (22) are fixedly connected inside the treatment box (17), and a water outlet hole (28) is provided at the bottom of each baffle (22). The baffles (22) are arranged in a staggered manner, and one end of the branch pipe (21) is located at the top of an adjacent baffle (22).

8. A diethyl phthalate production and preparation device according to claim 7, characterized in that: An air outlet pipe (23) is fixedly connected to the top of one side of the treatment box (17), and a third valve (24) is arranged on the outside of the air outlet pipe (23); a water outlet pipe (25) is fixedly connected to the bottom of one side of the treatment box (17), and a fourth valve (26) is arranged on the outside of the water outlet pipe (25).

Images