Uniformly heated rectification device for tetrahydrofuran

Abstract

The utility model relates to the technical field of tetrahydrofuran processing, in particular to a tetrahydrofuran rectification device capable of being heated uniformly, which comprises a base and a built-in heating mechanism, an anti-explosion glass cover is embedded in the center of the top of the base, a rectification tank is wrapped on the inner side of the anti-explosion glass cover, a distillation space is arranged in the rectification tank, and the distillation space is arranged in the distillation tank. A built-in heating mechanism is mounted in the distillation space, the built-in heating mechanism comprises a heating rod, distillation plates, a limiting sleeve, an outward-extending heating strip and a separation hole, the heating rod is sleeved with the limiting sleeve, the distillation plates are vertically mounted on the outer wall of the limiting sleeve, the outward-extending heating strip is arranged at the bottom of each distillation plate, and the separation hole is formed in the outer wall of the limiting sleeve. The extended heating strip is connected with the heating rod in the inner cavity; according to the utility model, the problem of non-uniform heating in the heating process of the existing rectification device in the prior art is solved, so that the internal temperature of a tetrahydrofuran solvent is different, the rectification efficiency is low, and the product quality is unstable.

Description

Technical Field

[0001] The utility model relates to the technical field of tetrahydrofuran processing, in particular to a rectification device with uniform heat reception for tetrahydrofuran. Background Technique

[0002] Tetrahydrofuran is an important organic synthesis raw material and a solvent with excellent performance, and is widely used in the fields of chemical industry, medicine, electronics, etc. In the production process of tetrahydrofuran, rectification is a key step for improving the purity of tetrahydrofuran.

[0003] The existing rectification devices have the problem of uneven heat reception during the heating process, resulting in temperature differences inside the tetrahydrofuran solvent, which will not only lead to low rectification efficiency but also make the product quality unstable.

[0004] Therefore, in view of this, research and improvement are carried out on the existing structure and deficiencies, and a rectification device with uniform heat reception for tetrahydrofuran is proposed, with the expectation of achieving a more practical value purpose. Content of the Utility Model

[0005] The purpose of the utility model is to provide a rectification device with uniform heat reception for tetrahydrofuran to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A rectification device with uniform heat reception for tetrahydrofuran, including a base and an internal heating mechanism. The top center of the base is embedded with an explosion-proof glass cover, and the inside of the explosion-proof glass cover is wrapped with a rectification tank. And a distillation space is arranged inside the rectification tank. An internal heating mechanism is installed inside the distillation space. The internal heating mechanism includes a heating rod, a distillation plate, a limit sleeve, an outward heating strip and a separation hole. The heating rod is sleeved inside the limit sleeve, and the outer wall of the limit sleeve is vertically arranged with distillation plates. The bottom of the distillation plate is provided with an outward heating strip, and the outward heating strip is connected to the heating rod in the inner cavity. Separation holes are arranged in rows inside the distillation plate. The outer wall of the rectification tank is provided with an oil guiding spiral tube in a surrounding manner.

[0007] Further, the upper and lower liquid outlet ends of the oil guiding spiral tube are provided with liquid guiding pipes, and the output port of the liquid guiding pipe is connected to a circulation heater.

[0008] Further, a filter is installed on the top of the rectification tank, and the filter is mutually embedded with the explosion-proof glass cover.

[0009] Further, a liquid outlet pipe is communicated with the bottom of the rectification tank.

[0010] Further, a detection sensor is installed at one end inside the rectification tank, and the detection sensor can detect temperature and pressure.

[0011] Furthermore, the positions of the abduction heating strips and the separation holes are staggered from each other.

[0012] The utility model provides a rectification device for tetrahydrofuran with uniform heating, which has the following beneficial effects:

[0013] 1. In the utility model, the whole rectification device adopts an inner and outer wrapping structure. Through the double-layer structure of the explosion-proof glass cover and the rectification tank sleeve, heat preservation treatment is carried out on the inside of the rectification tank. A filter is arranged at the top of the rectification tank for feeding, a liquid outlet pipe is arranged at the bottom of the rectification tank, and the outer wall of the rectification tower is made of a high heat conduction material to improve the heat conduction efficiency.

[0014] 2. In the utility model, an oil guiding spiral pipe is arranged around the outside of the rectification tank. Through a fluid with good heat conduction medium, it is transmitted spirally on the rectification tank to heat the space between the explosion-proof glass cover and the rectification tank, and then transfer the heat into the rectification tank, so as to achieve the heating effect on the rectification tank.

[0015] 3. In the utility model, the built-in heating mechanism is arranged inside the rectification tank. The heating rod is placed inside the limit sleeve to reduce the heat leakage, making it adapt to the heat generated by the abduction heating strips and avoiding the situation of uneven heating temperature, so that the internal tetrahydrofuran solvent is heated more evenly.

[0016] 4. In the utility model, the built-in detection sensor controls the heating power of the heating rod and the circulation rate of the circulation heater through its temperature sensor and pressure sensor to achieve the control of the heating power. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Referring to the accompanying drawings, the disclosure of the utility model will become easier to understand. It is easy for those skilled in the art to understand that these drawings are only used to illustrate the technical solutions of the utility model and are not intended to limit the protection scope of the utility model. In the drawings:

[0018] Figure 1 is the internal sectional structure schematic diagram of a rectification device for tetrahydrofuran with uniform heating according to the utility model;

[0019] Figure 2 is the partial structure schematic diagram of the built-in heating mechanism of a rectification device for tetrahydrofuran with uniform heating according to the utility model;

[0020] Figure 3 is the top view structure schematic diagram of the built-in heating mechanism of a rectification device for tetrahydrofuran with uniform heating according to the utility model.

[0021] In the figure: 1. Base; 2. Detection sensor; 3. Explosion-proof glass cover; 4. Built-in heating mechanism; 401. Heating rod; 402. Distillation plate; 403. Limiting sleeve; 404. Outward heating strip; 405. Separation hole; 5. Circulation heater; 501. Liquid guide pipe; 502. Oil guide spiral pipe; 6. Rectification tank; 7. Filter; 8. Liquid outlet pipe; 9. Distillation space. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-3 , the present invention provides a technical solution: a rectification device with uniform heating for tetrahydrofuran, including a base 1 and a built-in heating mechanism 4. An explosion-proof glass cover 3 is embedded in the center of the top of the base 1, and a rectification tank 6 is wrapped inside the explosion-proof glass cover 3. And a distillation space 9 is arranged inside the rectification tank 6. A built-in heating mechanism 4 is installed inside the distillation space 9. The built-in heating mechanism 4 includes a heating rod 401, a distillation plate 402, a limiting sleeve 403, an outward heating strip 404 and a separation hole 405. A heating rod 401 is sleeved inside the limiting sleeve 403, and distillation plates 402 are vertically arranged and installed on the outer wall of the limiting sleeve 403. An outward heating strip 404 is arranged at the bottom of the distillation plate 402, and the outward heating strip 404 is connected to the inner cavity heating rod 401. Separation holes 405 are arranged in rows inside the distillation plate 402. An oil guide spiral pipe 502 is arranged around the outer wall of the rectification tank 6; Liquid guide pipes 501 are arranged at the upper and lower liquid outlet ends of the oil guide spiral pipe 502, and the output port of the liquid guide pipe 501 is connected to a circulation heater 5; A filter 7 is installed at the top of the rectification tank 6, and the filter 7 is mutually embedded with the explosion-proof glass cover 3; A liquid outlet pipe 8 is communicated with the bottom of the rectification tank 6; A detection sensor 2 is installed at one end inside the rectification tank 6, and the detection sensor 2 can detect temperature and pressure; The positions of the outward heating strip 404 and the separation hole 405 are staggered from each other;

[0024] The overall rectification device adopts an internal and external wrapping structure. Through the double-layer structure of the explosion-proof glass cover 3 and the rectification tank 6 sleeved, heat preservation treatment is carried out inside the rectification tank 6. A filter 7 is arranged at the top of the rectification tank 6 for feeding, and a liquid outlet pipe 8 is arranged at the bottom of the rectification tank 6. The outer wall of the rectification tower is made of a high thermal conductivity material to improve the heat conduction efficiency;

[0025] An oil guiding spiral tube 502 is arranged around the outside of the rectifying tank 6. Through a fluid with good heat conduction medium, it is spirally transmitted on the rectifying tank 6 to heat the gap space between the explosion-proof glass cover 3 and the rectifying tank 6, so as to transfer heat into the rectifying tank 6, thereby achieving the heating effect on the rectifying tank 6;

[0026] The built-in heating mechanism 4 is arranged inside the rectifying tank 6. The heating rod 401 is placed inside the limit sleeve 403 to reduce the leakage of its heat, making it adapt to the heat generated by the outward heating strip 404, avoiding the situation of uneven heating temperature, and making the internal tetrahydrofuran solvent heated more evenly;

[0027] The built-in detection sensor 2 controls the heating power of the heating rod 401 and the circulation rate of the circulation heater 5 through its temperature sensor and pressure sensor to achieve the control of the heating power.

[0028] Working principle: For this type of rectifying device for tetrahydrofuran with uniform heating, first, the circulation heater 5 at the outer end is controlled to control the circulation transmission of the medium oil along the liquid guide pipe 501 and the oil guiding spiral tube 502, heat the gap space between the explosion-proof glass cover 3 and the rectifying tank 6, and transfer the heat into the rectifying tank 6 to preheat the rectifying tank 6. Then, from the filter 7 at the top, the tetrahydrofuran solvent is put in from the upper opening, so that the tetrahydrofuran solvent passes through the filtering medium and enters the distillation space 9 for rectification treatment. At the same time, the heating rod 401 and the outward heating strips 404 on each branch are controlled to transfer heat outward for heating treatment. When the tetrahydrofuran solvent descends, it will pass through the separation holes 405 on the distillation plate 402 to slow down the descending rate for preliminary heating treatment of the tetrahydrofuran solvent. As the tetrahydrofuran solvent gradually accumulates inside the rectifying tank 6 and the temperature reaches a certain value, vapor will be generated and gradually move upward. When moving upward, it will pass through the distillation plate 402 at the top, and the vapor will contact the distillation plate 402 for liquefaction. The arranged distillation plates 402 will buffer the rising rate of the water vapor, thereby increasing the liquefaction effect and accelerating the rectification efficiency.

[0029] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be thought of by those skilled in the art within the technical scope disclosed by the present invention without creative labor should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. A tetrahydrofuran distillation device with uniform heating, comprising a base (1) and a built-in heating mechanism (4), characterized in that: An explosion-proof glass cover (3) is embedded in the center of the top of the base (1), and a distillation tank (6) is wrapped inside the explosion-proof glass cover (3), and a distillation space (9) is arranged inside the distillation tank (6), and a built-in heating mechanism (4) is installed inside the distillation space (9), and the built-in heating mechanism (4) comprises a heating rod (401), a distillation plate (402), a limiting sleeve (403), an outward-extending heating strip (404) and a separation hole (405), and the limiting sleeve A heating rod (401) is sleeved inside the cylinder (403), and a distillation plate (402) is vertically arranged on the outer wall of the limiting sleeve (403), an outward heating strip (404) is arranged at the bottom of the distillation plate (402), and the outward heating strip (404) is connected to the heating rod (401) in the inner cavity, and a separation hole (405) is arranged inside the distillation plate (402), and an oil guide spiral tube (502) is arranged around the outer wall of the distillation tank (6).

2. A uniformly heated distillation device for tetrahydrofuran according to claim 1, characterized in that: The upper and lower liquid outlet ends of the oil-conducting spiral tube (502) are provided with liquid-conducting tubes (501), and the output port of the liquid-conducting tube (501) is connected to a circulation heater (5).

3. A uniformly heated distillation device for tetrahydrofuran according to claim 1, characterized in that: A filter (7) is installed on the top of the rectification tank (6), and the filter (7) and the explosion-proof glass cover (3) are interlocked.

4. A uniformly heated distillation device for tetrahydrofuran according to claim 1, characterized in that: The bottom of the rectification tank (6) is connected to a liquid outlet pipe (8).

5. A uniformly heated distillation device for tetrahydrofuran according to claim 1, characterized in that: A detection sensor (2) is installed at one end of the interior of the distillation tank (6), and the detection sensor (2) can detect temperature and pressure.

6. A uniformly heated distillation device for tetrahydrofuran according to claim 1, characterized in that: The positions of the outwardly extending heating strips (404) and the separation holes (405) are staggered.

Images