CN223914697U - Distillation equipment - Google Patents

Abstract

The utility model relates to the technical field of distillation, in particular to distillation equipment, which comprises a distillation kettle and a pressure regulating assembly, wherein a part of solution to be distilled is converted into fog drops through the pressure regulating assembly and is released to a fog drop temporary storage cavity of the distillation kettle. The solution to be distilled which is not atomized flows into the solution temporary storage cavity through the pressure regulating component. The distillation still is used for heating the fog drops and the solution to gasify the components to be distilled in the fog drops and the solution, and the components to be distilled are discharged out of the distillation still through a steam port so as to complete the distillation task. Compared with the traditional distillation mode, most of the solution to be distilled is atomized, and fog drops are easier to distill relative to the solution, so that the distillation efficiency is greatly improved. Under the synergistic effect of liquid flow and earth rotation, the solution to be distilled in the solution temporary storage cavity generates vortex which is equivalent to the stirring effect of the stirring device, so that the stirring device is not required to be arranged. On the premise of saving electric energy, the distillation efficiency is ensured.

Description

Distillation apparatus

Technical Field

The utility model relates to the technical field of distillation, in particular to distillation equipment.

Background

The distillation equipment is used in chemical production, and the distillation can be completed through heating to vaporize the required fraction and condensing and collecting the vaporized fraction according to the difference of the boiling points of the fraction.

At present, when distillation is performed by means of conventional distillation equipment, the distillation efficiency is low.

Disclosure of utility model

The utility model provides distillation equipment, which is used for solving the problem of lower distillation efficiency when distillation is carried out by means of traditional distillation equipment.

The present utility model provides a distillation apparatus comprising:

the distillation kettle is internally provided with a solution temporary storage cavity and a fog drop temporary storage cavity which are communicated, the top of the distillation kettle is provided with a steam outlet, and the bottom of the distillation kettle is provided with a solution outlet;

the pressure regulating assembly is respectively communicated with the solution temporary storage cavity, the fog drop temporary storage cavity and the solution discharge port, can input solution into the solution temporary storage cavity, can input fog drops into the fog drop temporary storage cavity, and can also receive the solution from the solution temporary storage cavity.

In some of these embodiments, the voltage regulating assembly comprises:

the solution buffer container is provided with a solution inlet and two solution outlets, wherein the solution inlet is communicated with the solution outlet;

The atomizing nozzle is arranged in the fog drop temporary storage cavity and is communicated with one of solution outlets of the solution cache container through a first liquid supply pipeline;

The liquid supply nozzle is arranged in the solution temporary storage cavity and is communicated with the other solution outlet of the solution cache container through a second liquid supply pipeline.

In some of these embodiments, the still further comprises:

A solution temporary storage cavity and a fog drop temporary storage cavity are formed in the kettle body, a steam outlet is formed at the top of the kettle body, and a solution outlet is formed at the bottom of the kettle body;

The heater is arranged outside or in the kettle body and is used for heating the solution in the kettle body;

the distillation tower section is vertically arranged, and the bottom end of the distillation tower section is communicated with the steam outlet.

In some of these embodiments, further comprising:

And the condensing assembly is communicated with the top end of the distillation tower section and is used for condensing steam.

In some of these embodiments, the condensing assembly comprises:

The first condenser is provided with a heating medium inlet, a heating medium outlet and a condensate outlet, a flow-through pipe is formed in the first condenser, the heating medium inlet is communicated with the top end of the distillation tower section, the condensate outlet is communicated with the upper part of the distillation tower section, the condensate outlet is also communicated with a collecting outlet, and the flow-through pipe of the first condenser is communicated with the pressure regulating assembly.

And the second condenser is provided with a refrigerant inlet and a refrigerant outlet on the shell, a return pipe is formed in the second condenser, and one end of the return pipe is communicated with the heating medium outlet.

In some of these embodiments, the condensing assembly further comprises:

The reflux ratio adjusting device is communicated with the condensate outlet, the reflux ratio adjusting device is communicated with the upper part of the distillation tower section, and the reflux ratio adjusting device is communicated with the extraction outlet.

In some of these embodiments, further comprising:

And the circulating pump is respectively communicated with the solution outlet and the flow pipe of the first condenser.

In some of these embodiments, further comprising:

And the solution compensation pipeline is communicated with the circulating pump.

The distillation equipment has the beneficial effects that by arranging the distillation kettle and the pressure regulating assembly, a part of solution to be distilled is converted into fog drops through the pressure regulating assembly and is released to the fog drop temporary storage cavity of the distillation kettle. The solution to be distilled which is not atomized flows into the solution temporary storage cavity through the pressure regulating component. The distillation still is used for heating the fog drops and the solution to gasify the components to be distilled in the fog drops and the solution, and the components to be distilled are discharged out of the distillation still through a steam outlet so as to complete the distillation task. Compared with the traditional distillation mode, most of the solution to be distilled is atomized, and fog drops are easier to distill relative to the solution, so that the distillation efficiency is greatly improved, and the energy loss is reduced. On the one hand, the solution to be distilled continuously flows into the solution temporary storage cavity, and on the other hand, the solution continuously flows out of the solution temporary storage cavity from the solution outlet. Under the synergistic effect of liquid flow and earth rotation, the solution to be distilled in the solution temporary storage cavity generates vortex which is equivalent to the stirring effect of the stirring device, so that the stirring device is not required to be arranged. On the premise of saving electric energy, the distillation efficiency is ensured. The distilled solution can be conveyed to a distillation kettle for re-distillation through a pressure regulating assembly, so that the distillation efficiency can be improved, the extraction rate can be improved, and the effect of eating and squeezing can be truly achieved. Steam generated by distillation flows into the first condenser from a heat medium inlet of the first condenser. At the same time, the solution to be distilled flows through the flow pipe of the first condenser. The steam exchanges heat with the solution to be distilled in the first condenser, so that the aim of preheating the solution to be distilled and the aim of precooling the steam are fulfilled. The heat energy utilization rate is improved, the distillation efficiency is improved, and the cooling burden of the second condenser is reduced. And then, the vapor which is not condensed after precooling flows through a heating medium outlet and enters a return pipe of the second condenser. The refrigerant flows into the second condenser from the refrigerant inlet. The refrigerant exchanges heat with the precooled steam in the second condenser, so that the aim of cooling the steam again is fulfilled. Within the first condenser, liquid stripped from the vapor exits the first condenser from a condensate outlet. In the second condenser, the liquid separated from the steam falls into the first condenser along the return pipe and is discharged from the first condenser through the condensate outlet. Overall, the heat utilization rate is effectively improved, and the cooling effect and the cooling efficiency are improved.

Drawings

FIG. 1 is a schematic view showing the construction of some embodiments of a distillation apparatus according to the present utility model;

FIG. 2 is a schematic view showing the internal structure of a still pot in the distillation apparatus shown in FIG. 1;

FIG. 3 is a schematic view of the structure of a pressure regulating assembly in the distillation apparatus shown in FIG. 1;

fig. 4 is a schematic view of the structure of the condensing unit in the distillation apparatus shown in fig. 1.

In the drawing, 110 parts of distillation still, 111 parts of still body, 112 parts of heater, 113 parts of distillation tower, 114 parts of attachment part, 120 parts of pressure regulating component, 121 parts of solution buffer container, 122 parts of atomizing nozzle, 123 parts of liquid supply nozzle, 130 parts of condensing component, 131 parts of first condenser, 1311 parts of heating medium inlet, 1312 parts of heating medium outlet, 1313 parts of condensate outlet, 132 parts of second condenser, 1321 parts of refrigerant inlet, 1322 parts of refrigerant outlet, 133 parts of reflux ratio regulating device, 1331 parts of extraction outlet, 140 parts of vacuum pump, 150 parts of circulating pump, 160 parts of solution compensating pipeline.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As described in the background art, distillation equipment relates to equipment used for distillation in chemical production, and according to the difference of the boiling points of the fractions, the distillation can be completed by heating to vaporize the desired fraction and condensing and collecting the vaporized fraction. At present, when distillation is performed by means of conventional distillation equipment, the distillation efficiency is low.

In order to solve the above problems, referring to fig. 1, 2, 3 and 4, the present utility model provides a distillation apparatus including a distillation still 110 and a pressure regulating assembly 120. A solution temporary storage cavity and a fog drop temporary storage cavity which are communicated are formed in the distillation kettle 110, and the fog drop temporary storage cavity is positioned above the solution temporary storage cavity. A steam outlet is formed at the top of the still pot 110, and a solution discharge port is formed at the bottom of the still pot 110. The pressure regulating assembly 120 is respectively communicated with the solution temporary storage cavity, the fog drop temporary storage cavity and the solution discharge port. The pressure regulating assembly 120 is capable of inputting solution into the solution holding chamber and is capable of inputting droplets into the droplet holding chamber and also capable of receiving solution from the solution holding chamber.

The working process and principle of the distillation equipment are as follows:

First, a part of the solution to be distilled is converted into mist droplets by the pressure regulating assembly 120, and released to the mist storage chamber of the still pot 110. The solution to be distilled which is not atomized flows into the solution temporary storage cavity through the pressure regulating component 120. The distillation still 110 gasifies the mist and the components to be distilled in the solution by heating the mist and the solution, and is discharged out of the distillation still 110 through a steam port to complete the distillation task. Compared with the traditional distillation mode, most of the solution to be distilled is atomized, and fog drops are easier to distill relative to the solution, so that the distillation efficiency is greatly improved, and the energy loss is reduced. On the one hand, the solution to be distilled continuously flows into the solution temporary storage cavity, and on the other hand, the solution continuously flows out of the solution temporary storage cavity from the solution outlet. Under the synergistic effect of liquid flow and earth rotation, the solution to be distilled in the solution temporary storage cavity generates vortex which is equivalent to the stirring effect of the stirring device, so that the stirring device is not required to be arranged. On the premise of saving electric energy, the distillation efficiency is ensured. The distilled solution can be conveyed to the distillation kettle 110 for re-distillation through the pressure regulating component 120, so that the distillation efficiency can be improved, the extraction rate can be improved, and the effect of eating and squeezing can be truly achieved.

Specifically, in the illustrated example, as shown in fig. 1 and 3, the pressure regulating assembly 120 includes a solution buffer container 121, an atomizing nozzle 122, a liquid supply nozzle 123, a first liquid supply line, and a second liquid supply line. The solution buffer container 121 is provided with a solution inlet and two solution outlets. The solution inlet is communicated with the solution outlet. The solution to be distilled can flow into the solution buffer container 121 through the solution inlet for temporary storage. The atomizing nozzle 122 is disposed in the droplet temporary storage chamber. The atomizing nozzle 122 communicates with one of the solution outlets of the solution cache container 121 through a first liquid supply line. The liquid supply nozzle 123 is arranged in the solution temporary storage cavity. The liquid supply nozzle 123 communicates with another solution outlet of the solution cache container 121 through a second liquid supply line. The first liquid supply pipeline is provided with a first flow regulating valve for regulating the flow of liquid in the first liquid supply pipeline. The second liquid supply pipeline is provided with a second flow regulating valve for regulating the flow of liquid in the second liquid supply pipeline. The direction of the arrow in fig. 3 shows the flow direction of the solution to be distilled. A part of the solution to be distilled from the solution cache container 121 flows to the atomizing nozzle 122 through the first liquid supply pipeline, and the solution is atomized by the atomizing nozzle 122 and flows into the mist temporary storage cavity. Another part of the solution to be distilled from the solution buffer container 121 flows to the solution supply nozzle 123 through the second solution supply pipeline, and flows into the solution temporary storage cavity through the solution supply nozzle 123.

Preferably, the atomizing nozzle 122 is installed at the bottom of the mist temporary storage chamber, and can spray mist upwards to ensure distillation efficiency and effect.

Preferably, the atomizing nozzle 122 may be a pressure type atomizing nozzle, and the required pressure for atomization is 1kg.

Specifically, in the illustrated example, as shown in fig. 1 and 2, a distillation still 110 includes a still body 111, a heater 112, a distillation column section 113, and an attachment 114. A solution temporary storage chamber and a mist temporary storage chamber are formed inside the kettle body 111. A steam outlet is formed at the top of the kettle body 111, and a solution outlet is formed at the bottom. The heater 112 is disposed outside the kettle body 111 or inside the kettle body 111, and is used for heating the liquid to be distilled in the kettle body 111. The axis of the distillation tower section 113 is arranged vertically, and the bottom end is communicated with the steam outlet. The attachment member 114 is installed in the mist temporary storage chamber, and can be attached by mist.

The operation of the still 110 is as follows:

And atomizing a part of the solution to be distilled, and enabling fog drops to enter a fog drop temporary storage cavity for temporary storage. And the other part of the non-atomized solution enters the solution temporary storage cavity for temporary storage. Thereafter, the solution temporary storage chamber and the mist temporary storage chamber are heated by the heater 112 to gasify mist and components to be distilled in the solution, thereby completing the distillation task. Compared with the traditional distillation mode, a part of solution to be distilled is atomized, and fog drops are easier to distill relative to the solution, so that the distillation efficiency is greatly improved. The distillation column section 113 is used as a vapor rising passage and a condensate return passage. On the one hand, the attachment piece 114 provides attachments for short retention of mist drops to avoid the mist drops from falling, on the other hand, the attachment piece 114 can transfer heat and fully contact with the mist drops to heat the mist drops, so that components to be distilled in the mist drops can be gasified and ascend more quickly, and more amount of solution to be distilled can be atomized in the same time period.

Preferably, the mist temporary storage cavity is one, two, three or more than four. When more than two fog drop temporary storage cavities are provided, the fog drop temporary storage cavities are sequentially communicated from top to bottom. In this way, the distillation efficiency can be further improved.

Preferably, the kettle body 111 includes a lower barrel section and an upper barrel section. A solution temporary storage cavity is formed in the lower barrel section. A solution inlet is formed at the top of the lower barrel section, and a solution outlet is formed at the bottom. A fog drop temporary storage cavity is formed in the upper barrel section, and a fog drop inlet and a steam outlet are formed at the top of the upper barrel section. The bottom of the upper cylinder section is detachably connected with the top of the lower cylinder section. Thus, the kettle body 111 is convenient to disassemble, replace and assemble. In addition, the kettle body 111 is split into a plurality of parts, which is beneficial to transportation.

Preferably, the axis of the solution inlet is at an angle of 30 °, 45 ° or 60 ° to the axis of the lower barrel section.

Preferably, the bottom end of the upper cylinder section and the top end of the lower cylinder section can be detachably connected in a threaded connection, a clamping connection or an adhesive connection mode.

Preferably, the outer diameter of the top end opening of the lower barrel section and the outer diameter of the bottom end opening of the upper barrel section are 600mm, 800mm or 1000mm.

In some applications, the heater 112 is a heating jacket, and is sleeved outside the kettle body 111, so that the solution temporary storage cavity and the mist temporary storage cavity can be heated sufficiently, and the distillation efficiency is improved. The heater 112 may be a high frequency heating coil or a resistive heater.

In other embodiments, the heater 112 is a coil and is disposed in the kettle 111.

Preferably, the distillation column section 113 may be a hollow column section, or may be internally provided with a packing.

Preferably, the attachment member 114 comprises a plurality of attachment layers, arranged in sequence from top to bottom. Each adhesive layer is located above the atomizing nozzle 122. Each adhesion layer is a steel wire mesh. It should be noted that the attachment member 114 may not be provided, so as to reduce the manufacturing cost of the apparatus.

Preferably, the attachment layer is two, three or four layers.

Specifically, in the illustrated example, as shown in fig. 1 and 4, the distillation apparatus further includes a condensing assembly 130. The condensing assembly 130 communicates with the top end of the distillation column section 113 for condensing the vapor to form condensate. The condensing assembly 130 includes a first condenser 131, a second condenser 132, and a reflux ratio adjusting device 133. A heat medium inlet 1311, a heat medium outlet 1312, and a condensate outlet 1313 are formed on the housing of the first condenser 131. A flow-through pipe is formed inside the first condenser 131. The heating medium inlet 1311 communicates with the top end of the distillation column section 113. The condensate outlet 1313 communicates with the upper portion of the distillation column section 113, and the condensate outlet 1313 also communicates with the extraction outlet 1331. The flow of the first condenser 131 is in communication with the pressure regulating assembly 120 via a pipe. A refrigerant inlet 1321 and a refrigerant outlet 1322 are formed in the housing of the second condenser 132. A return pipe is formed inside the second condenser 132. One end of the return line communicates with the heating medium outlet 1312. The reflux ratio adjusting device 133 is respectively communicated with the condensate outlet 1313, the upper portion of the distillation column section 113, and the extraction outlet, and is used for adjusting the reflux ratio.

The condensation assembly 130 operates as follows:

The steam generated by distillation flows into the first condenser 131 from the heat medium inlet 1311 of the first condenser 131. At the same time, the solution to be distilled flows through the flow pipe of the first condenser 131. The steam exchanges heat with the solution to be distilled in the first condenser 131, so as to achieve the aim of preheating the solution to be distilled and the aim of precooling the steam. The heat utilization rate is improved, the distillation efficiency is improved, and the cooling burden of the second condenser 132 is reduced. The pre-cooled vapor then flows through the heat medium outlet 1312 into the return line of the second condenser 132. Refrigerant such as freon, ammonia, water, carbon dioxide, or various refrigerants flows into the second condenser 132 from the refrigerant inlet 1321. The refrigerant exchanges heat with the pre-cooled steam in the second condenser 132, so as to achieve the purpose of re-cooling the steam. Within the first condenser 131, liquid stripped from the vapor exits the first condenser 131 from condensate outlet 1313. In the second condenser 132, the liquid separated from the vapor falls into the first condenser 131 along the return pipe, and is discharged out of the first condenser 131 through the condensate outlet 1313. Overall, the heat utilization rate is effectively improved, and the cooling effect and the cooling efficiency are improved.

Preferably, the axis of the first condenser 131 is inclined such that the condensate outlet 1313 is lower than the heat medium inlet 1311, and the axis of the second condenser 132 is vertically disposed. In this way, the axis of the return pipe is arranged vertically, which is more advantageous for the liquid that is detached from the steam to fall along the return pipe into the first condenser 131. When the condensate falls in the return pipe of the second condenser 132 by gravity, the falling condensate is heated by the continuously rising steam, so that the temperature of the liquid finally returned to the distillation tower section 113 is higher than the normal temperature, which is very beneficial to distillation of the high boiling point fraction and saves heating energy consumption.

Preferably, the first condenser 131 is one, two, three or more than four. And/or the second condenser 132 is one, two, three, or more than four. Further first and second condensers 131 and 132 can further improve the cooling effect.

Preferably, the return line and the heating medium outlet 1312 may communicate through a straight line. In this way, the liquid in the return pipe is allowed to quickly return to the first condenser 131. The return line and the heating medium outlet 1312 may also be connected by a return line. In this way, the path of the steam flowing into the second condenser 132 can be prolonged, and the cooling effect can be improved.

Specifically, in the illustrated example, as shown in fig. 1, the distillation apparatus further includes a vacuum pump 140, a circulation pump 150, and a solution compensation line 160. The vacuum pump 140 can be connected to or disconnected from the other end of the return pipe of the second condenser 132. When the vacuum pump 140 is in communication with the return line, a negative pressure distillation pattern can be achieved. While when the vacuum pump 140 is disconnected from the return line, the atmospheric distillation mode can be realized. The circulation pump 150 is respectively connected to the solution discharge port and the flow-through pipe of the first condenser 131. It should be noted that, the circulation pump 150 is connected to the solution inlet of the pressure regulating assembly 120 through the flow pipe of the first condenser 131, and is capable of providing flow power for the solution to be distilled, so that the solution to be distilled and the solution flowing through the flow pipe of the first condenser 131 enter the pressure regulating assembly 120. The solution compensating line 160 communicates with the circulation pump 150 for replenishing the solution to be distilled into the circulation line.

In order to enable the vacuum pump 140 to be in or out of communication with the return line. An on-off valve is provided on the connection line between the vacuum pump 140 and the return line to control the on-off of the line.

Preferably, the switch valve can be an electromagnetic valve, which is beneficial to improving the degree of automation. The switch valve can also be a manual valve, so that manual operation is facilitated.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, or communicable with each other, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interactive relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims (8)

1. A distillation apparatus, comprising:

the distillation kettle is internally provided with a solution temporary storage cavity and a fog drop temporary storage cavity which are communicated, the top of the distillation kettle is provided with a steam outlet, and the bottom of the distillation kettle is provided with a solution outlet;

The pressure regulating assembly is respectively communicated with the solution temporary storage cavity, the fog drop temporary storage cavity and the solution discharge port, can input solution into the solution temporary storage cavity, can input fog drops into the fog drop temporary storage cavity, and can also receive solution from the solution temporary storage cavity.

2. The distillation apparatus of claim 1, wherein the pressure regulating assembly comprises:

The solution cache container is provided with a solution inlet and two solution outlets, wherein the solution inlet is communicated with the solution outlet;

the atomizing nozzle is arranged in the fog drop temporary storage cavity and is communicated with one of the solution outlets of the solution cache container through a first liquid supply pipeline;

The liquid supply nozzle is arranged in the solution temporary storage cavity and is communicated with the other solution outlet of the solution cache container through a second liquid supply pipeline.

3. The distillation apparatus of claim 1, wherein the still pot comprises:

The kettle body is internally provided with the solution temporary storage cavity and the fog drop temporary storage cavity, the top is provided with the steam outlet, and the bottom is provided with the solution outlet;

The heater is arranged outside the kettle body or in the kettle body and is used for heating the solution in the kettle body;

And the distillation tower section is vertically arranged, and the bottom end of the distillation tower section is communicated with the steam outlet.

4. A distillation apparatus according to claim 3, further comprising:

And the condensing assembly is communicated with the top end of the distillation tower section and is used for condensing steam.

5. The distillation apparatus of claim 4, wherein the condensing assembly comprises:

The device comprises a distillation tower section, a first condenser, a pressure regulating component, a second condenser, a pressure regulating component and a pressure regulating component, wherein a heating medium inlet, a heating medium outlet and a condensate outlet are formed on a shell, and a flow pipe is formed in the shell;

and the second condenser is provided with a refrigerant inlet and a refrigerant outlet on the shell, a return pipe is formed in the second condenser, and one end of the return pipe is communicated with the heating medium outlet.

6. The distillation apparatus of claim 5, wherein the condensing assembly further comprises:

The reflux ratio adjusting device is communicated with the condensate outlet, the reflux ratio adjusting device is communicated with the upper part of the distillation tower section, and the reflux ratio adjusting device is communicated with the extraction outlet.

7. The distillation apparatus of claim 5, further comprising:

and the circulating pump is respectively communicated with the solution discharge port and the flow pipe of the first condenser.

8. The distillation apparatus of claim 7, further comprising:

and the solution compensation pipeline is communicated with the circulating pump.