Tetrahydrofuran distillation device

Abstract

The utility model relates to the field of tetrahydrofuran distillation, in particular to a tetrahydrofuran distillation device which comprises a distillation retort used for purifying tetrahydrofuran, a stirring mechanism facilitating uniform heating of tetrahydrofuran is arranged at the top of the distillation retort, and the bottom of the distillation retort is communicated with a connecting pipe; the cooling mechanism comprises a cooling box communicated with the liquid outlet end of the connecting pipe, air outlet holes are formed in the periphery of the cooling box, guide plates are fixedly connected to the positions, located below the air outlet holes, of the periphery of the cooling box, and the cooling mechanism further comprises a protection box arranged on the outer side of the cooling box; according to the device, through the cooling box, the air outlet holes and the flow guide plates, hot air flow generated by tetrahydrofuran can enter the protection box through the air outlet holes in the four faces, meanwhile, the hot air flow is guided upwards through the flow guide plates and discharged and expanded through the ventilation openings, the hot air flow and cold air are rapidly alternated, and the ventilation effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of tetrahydrofuran distillation, especially a tetrahydrofuran distillation device. BACKGROUND

[0002] Tetrahydrofuran is a common organic solvent, commonly used in chemical synthesis, polymerization reaction and other fields. In order to purify or remove impurities, tetrahydrofuran is distilled. However, after the distillation of tetrahydrofuran is completed, it still has a high temperature and a large amount of steam. When the staff approaches, the rising steam can cause harm to the staff.

[0003] After searching, the Chinese patent "tetrahydrofuran distillation device" authorized announcement number "CN219595895U" the utility model equipment in use first join tetrahydrofuran into distillation tank, then distillation tank starts to tetrahydrofuran and distills, when tetrahydrofuran distillation is completed through the connecting pipe and flows into the storage box, then starts the second motor, the second motor drives the first drive gear and the second drive gear, drives the drive rod to rotate through the second drive gear, the drive rod rotates and drives the fan to rotate, through the rotation of the fan, the air in the storage box can circulate, then the tetrahydrofuran is cooled down. In this way, the cooled tetrahydrofuran will not produce steam, and the operator will be safer when handling tetrahydrofuran, improving the safety of the equipment.

[0004] Although the above uses a fan to cool the distilled tetrahydrofuran, so that the cooled tetrahydrofuran will not produce steam, the distilled tetrahydrofuran is stored in the storage box for heat dissipation, forming a sealed space in the storage box. During the cooling process of tetrahydrofuran by the fan, only the air in the storage box can be exchanged through the air outlet above the fan, resulting in slow air circulation inside and outside, affecting the cooling effect.

[0005] Therefore, a tetrahydrofuran distillation device is proposed to solve the above problems. Utility model content

[0006] The purpose of the utility model is to provide a tetrahydrofuran distillation device to solve the above problems, and to improve the problem of slow air circulation inside and outside during the cooling process of tetrahydrofuran.

[0007] The utility model discloses a four hydrogen furan distillation device through following technical scheme to realize above -mentioned purpose, a four hydrogen furan distillation device, include: for the four hydrogen furan is purified and is distilled jar, the top of distilled jar is provided with the agitator convenient for four hydrogen furan uniform heat receiving, the bottom of distilled jar is connected with the connecting pipe, cooling mechanism, cooling mechanism includes the cooling box of communication in connecting pipe liquid outlet end, the four all of cooling box are equipped with the air outlet hole, the four of cooling box are fixedly connected with the deflector below air outlet hole, through cooling box, air outlet hole and deflector, can four hydrogen furan generated hot air flow through four sides air outlet hole into the protective box, simultaneously through deflector and make hot air flow up drainage, through the air vent, expand and make hot air flow and cold air alternately, improve the heat dissipation effect,

[0008] Preferably, the cooling mechanism further comprises a protective box arranged outside the cooling box, the inner bottom of the protective box is fixedly connected with the bottom of the cooling box, ventilation openings are arranged on the periphery of the protective box, the ventilation openings are located above the air outlet holes, an installation shell is fixedly connected to the top of the protective box, a fan is arranged in the inner cavity of the installation shell, a placing groove is arranged in the inner cavity of the installation shell, an adsorption plate is arranged on the inner wall of the installation shell above the placing groove, and a movable shell is movably connected to one side of the installation shell through a rotating shaft. Through the protective box, ventilation openings, fan, installation shell, placing groove, adsorption plate and movable shell, the movable shell is first opened, dry ice is placed in the placing groove, and then the movable shell is closed. The dry ice releases cold air, which flows to the lower side of the fan through the adsorption plate. At the same time, the adsorption plate adsorbs the moisture in the cold air. The fan blows the cold air into the cooling box. Then, the four hydrogen furan after distillation is discharged into the cooling box through the connecting pipe. The fan continuously blows the cold air into the cooling box. The hot air flow generated by the four hydrogen furan in the cooling box enters the protective box through the four air outlet holes. At the same time, the deflector guides the hot air flow upward. The hot air flow is discharged through the ventilation openings. The hot air flow and the cold air generated by the dry ice are continuously exchanged, thereby improving the heat dissipation effect.

[0009] Preferably, a height limiting plate is fixedly connected to the inner wall of the cooling box, and two liquid level sensors are symmetrically arranged on the bottom of the height limiting plate. Through the height limiting plate and the liquid level sensors, when the four hydrogen furan after distillation is discharged into the cooling box for cooling, the liquid level sensors will alarm when the four hydrogen furan is discharged to an appropriate height, and the delivery of the four hydrogen furan can be stopped.

[0010] Preferably, the deflector is inclined, and the adsorption plate is made of activated carbon. By inclining the deflector, when the gas in the cooling box is discharged through the air outlet holes, the deflector guides the gas, so that the gas is quickly discharged out of the protective box, thereby accelerating the air circulation.

[0011] Preferably, the outer surface of the mounting shell is fixedly connected with a positioning ring, and the bottom of the positioning ring is fixedly connected with the top of the protective box.

[0012] Preferably, the top of the mounting shell is provided with a dust screen above the fan. Through the dust screen, the dust in the external environment is blocked when the fan is operating, so that the dust in the air flow enters the cooling box.

[0013] Preferably, the side opposite to the connecting pipe of the cooling box is communicated with a discharge pipe, and the other end of the discharge pipe penetrates the protective box and is provided with an electromagnetic valve. Through the discharge pipe and the electromagnetic valve, when the cooling of tetrahydrofuran is completed, the electromagnetic valve can be opened to discharge through the discharge pipe.

[0014] The utility model discloses the beneficial effects are:

[0015] Through the cooling box, the air outlet and the flow guide plate, the hot air flow generated by tetrahydrofuran can enter the protective box through the air outlet on four sides, and the hot air flow is upwardly guided through the flow guide plate and discharged through the air vent, so that the hot air flow and the cold air are alternately expanded and rapidly, and the ventilation effect is improved.

[0016] Through the protective box, the air vent, the fan, the mounting shell, the placing groove, the adsorption plate and the movable shell, the movable shell is first opened, the dry ice is placed in the placing groove, and then the movable shell is closed. The dry ice releases cold air, the cold air floats to the lower side of the fan through the adsorption plate, and the humidity in the cold air is adsorbed through the adsorption plate. The cold air is blown into the cooling box through the fan, and then the tetrahydrofuran distilled through the connecting pipe is discharged into the cooling box. The cold air is continuously blown into the cooling box through the fan, the hot air flow generated by tetrahydrofuran in the cooling box enters the protective box through the air outlet on four sides, and the hot air flow is upwardly guided through the flow guide plate and discharged through the air vent. The hot air flow in the cooling box and the cold air generated by the dry ice are continuously exchanged, and the heat dissipation effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a whole structure schematic view of the utility model;

[0018] Figure 2 It is a sectional structure schematic view of the utility model;

[0019] Figure 3 It is a cooling mechanism structure schematic view of the utility model;

[0020] Figure 4 It is a cooling mechanism structure schematic view of the utility model; Figure 3 It is a structure enlarged view of A in the utility model.

[0021] In the diagram: 1. Distillation tank; 2. Stirring mechanism; 3. Connecting pipe; 4. Cooling mechanism; 401. Protective box; 402. Vent; 403. Cooling box; 404. Vent outlet; 405. Height limit plate; 406. Liquid level sensor; 407. Guide plate; 408. Mounting shell; 409. Positioning ring; 410. Fan; 411. Dustproof net; 412. Placement trough; 413. Adsorption plate; 414. Movable shell; 415. Discharge pipe; 416. Solenoid valve. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In practical implementation: such as Figures 1-4 As shown, a tetrahydrofuran distillation apparatus includes: a distillation tank 1 for purifying tetrahydrofuran, a stirring mechanism 2 for uniform heating of tetrahydrofuran at the top of the distillation tank 1, and a connecting pipe 3 connected to the bottom of the distillation tank 1; a cooling mechanism 4, including a cooling box 403 connected to the liquid outlet end of the connecting pipe 3, vent holes 404 on all four sides of the cooling box 403, guide plates 407 fixedly connected below the vent holes 404 on all four sides of the cooling box 403, a protective box 401 disposed outside the cooling box 403, the inner bottom of the protective box 401 fixedly connected to the bottom of the cooling box 403, ventilation openings 402 on all four sides of the protective box 401, the ventilation openings 402 being located above the vent holes 404, and a mounting shell 408 fixedly connected to the top of the protective box 401, with a fan 41 installed inside the mounting shell 408. 0. The inner cavity of the mounting shell 408 is provided with a placement groove 412. An adsorption plate 413 is provided on the inner wall of the mounting shell 408 above the placement groove 412. A movable shell 414 is movably connected to one side of the mounting shell 408 via a rotating shaft. A height limit plate 405 is fixedly connected to the inner wall of the cooling box 403. Two liquid level sensors 406 are symmetrically arranged at the bottom of the height limit plate 405. The guide plate 407 is inclined. The adsorption plate 413 is made of activated carbon. A positioning ring 409 is fixedly connected to the outer surface of the mounting shell 408. The bottom of the positioning ring 409 is fixedly connected to the top of the protective box 401. A dustproof net 411 is provided on the top of the mounting shell 408. The dustproof net 411 is located above the fan 410. A discharge pipe 415 is connected to the side of the cooling box 403 opposite to the connecting pipe 3. The other end of the discharge pipe 415 passes through the protective box 401 and is provided with a solenoid valve 416.

[0024] Through the first motor in the stirring mechanism 2, by starting the first motor, the first motor drives the first gear and the rotating rod to rotate through the rotating teeth, the rotation of the rotating rod drives the first stirring plate to rotate clockwise, the first stirring plate stirs the tetrahydrofuran in the distillation tank 1 clockwise, and the second gear drives the hollow rod and the second stirring plate to rotate through the rotating teeth, the second stirring plate rotates counterclockwise, and the clockwise rotation of the first stirring plate and the counterclockwise rotation of the second stirring plate make the tetrahydrofuran in the distillation tank 1 fully heated, thereby improving the distillation effect of the equipment.

[0025] The connecting pipe 3 is provided with a control valve on the surface, which can control the flow rate of the purified tetrahydrofuran.

[0026] In use, first, the tetrahydrofuran is discharged into the distillation tank 1 for purification, and in the purification process, the tetrahydrofuran is stirred by the stirring mechanism 2, so that the tetrahydrofuran is uniformly heated, and when the tetrahydrofuran is purified, the movable shell 414 is opened, dry ice is placed in the placing groove 412, and then the movable shell 414 is closed, the dry ice releases cold air, the cold air flows to the lower side of the fan 410 through the adsorption plate 413, and the humidity in the cold air is adsorbed through the adsorption plate 413, the cold air is blown into the cooling box 403 through the fan 410, and then the distilled tetrahydrofuran is discharged into the cooling box 403 through the connecting pipe 3, when the liquid level sensor 406 sends an alarm, the delivery of the tetrahydrofuran is stopped, the cold air is continuously blown into the cooling box 403 through the fan 410, the hot air flow generated by the tetrahydrofuran in the cooling box 403 enters the protection box 401 through the four air outlets, and the hot air flow is upwardly introduced through the guide plate 407, and is discharged through the ventilation opening 402, thereby continuously exchanging the hot air flow in the cooling box 403 and the cold air generated by the dry ice, and improving the heat dissipation effect.

[0027] It should be noted that the distillation tank 1, the stirring mechanism 2, the liquid level sensor 406, the fan 410 and the electromagnetic valve 416 are all relatively mature devices in the prior art, and the specific model can be selected according to actual needs, and the distillation tank 1, the stirring mechanism 2, the liquid level sensor 406, the fan 410 and the electromagnetic valve 416 can be powered by an internal power supply or a mains power supply, and the specific power supply mode is selected as needed.

[0028] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A tetrahydrofuran distillation apparatus, characterized by, The utility model relates to a distillation tank (1) for purifying tetrahydrofuran, which is provided with a stirring mechanism (2) at the top of the distillation tank (1) to facilitate uniform heating of the tetrahydrofuran, and a connecting pipe (3) is connected to the bottom of the distillation tank (1). The cooling mechanism (4) comprises a cooling box (403) connected to the outlet end of the connecting pipe (3), and gas outlet holes (404) are formed around the cooling box (403), and flow guide plates (407) are fixedly connected to the lower part of the cooling box (403) around the gas outlet holes (404). The cooling mechanism (4) further comprises a protective box (401) arranged outside the cooling box (403), the inner bottom of the protective box (401) is fixedly connected to the bottom of the cooling box (403), ventilation openings (402) are formed around the protective box (401), the ventilation openings (402) are located above the gas outlet holes (404), an installation shell (408) is fixedly connected to the top of the protective box (401), a fan (410) is arranged in the inner cavity of the installation shell (408), a placing groove (412) is formed in the inner cavity of the installation shell (408), an adsorption plate (413) is arranged on the inner wall of the installation shell (408) above the placing groove (412), and a movable shell (414) is movably connected to one side of the installation shell (408) through a rotating shaft.

2. A tetrahydrofuran distillation apparatus according to claim 1, characterized in that: The inner wall of the cooling box (403) is fixedly connected to a height limiting plate (405), and two liquid level sensors (406) are symmetrically arranged on the bottom of the height limiting plate (405).

3. A tetrahydrofuran distillation apparatus according to claim 1, wherein: The flow guide plates (407) are arranged obliquely, and the material of the adsorption plate (413) is activated carbon.

4. A tetrahydrofuran distillation apparatus according to claim 2, wherein: The outer surface of the installation shell (408) is fixedly connected to a positioning ring (409), and the bottom of the positioning ring (409) is fixedly connected to the top of the protective box (401).

5. A tetrahydrofuran distillation apparatus according to claim 2, wherein: A dust screen (411) is arranged on the top of the installation shell (408), and the dust screen (411) is located above the fan (410).

6. A tetrahydrofuran distillation apparatus according to claim 2, wherein: An outlet pipe (415) is connected to the side of the cooling box (403) opposite to the connecting pipe (3), the other end of the outlet pipe (415) penetrates through the protective box (401) and is provided with an electromagnetic valve (416).

7. A tetrahydrofuran distillation apparatus according to claim 1, wherein: ​

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