CN215538512U - Multistage molecular distillation equipment - Google Patents

Abstract

The utility model discloses multistage molecular distillation equipment which comprises a plurality of stages of distillation towers which are sequentially communicated, wherein each distillation tower is provided with a distillation cavity, each distillation tower is provided with an evaporation part and a condensation part which are positioned in the distillation cavity, the evaporation parts and the condensation parts are arranged at intervals, the upper end of each distillation tower is provided with a feeding end facing the evaporation parts, the lower end of each distillation tower is provided with a heavy distillation discharging end and a light distillation discharging end, the evaporation parts extend to the heavy distillation discharging ends, the condensation parts extend to the light distillation discharging ends, and the heavy distillation discharging ends of each stage of distillation tower are connected with the feeding end of the next stage of distillation tower. The utility model can carry out multi-stage distillation, improves the purity of the distillation product and the distillation quality, and has simple and convenient operation.

Description

Multistage molecular distillation equipment

Technical Field

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

Background

Molecular distillation is a special liquid-liquid separation technology, and separation is realized by the difference of the mean free path of motion of different substance molecules, so that the molecular distillation method is widely applied to industries such as food, medicine, fine chemical engineering and the like. In the related technology, the molecular distillation equipment has a simple structure, the feed liquid is distilled once after entering the molecular distillation equipment, when various substances to be distilled exist in the feed liquid, the substances cannot be separated one by one, if distillation is needed, the substances are added into the distilled gas again, and the distillation temperature is reset, so that the operation is complex.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides the multistage molecular distillation equipment which can carry out multistage distillation, improves the purity of the distillation product and the distillation quality and is simple and convenient to operate.

A multistage molecular distillation apparatus according to an embodiment of the present invention includes: multistage distillation column that communicates in proper order, the distillation column has the distillation chamber, the distillation column is equipped with and is located the evaporation plant and the condensation part in distillation chamber, the evaporation plant with condensation part interval arrangement, the upper end of distillation column is provided with the orientation the feed end of evaporation plant, the lower extreme of distillation column is equipped with heavy distillation discharge end and light distillate end, the evaporation plant extends to heavy distillation discharge end, the condensation part extends to light distillate end, every grade the distillation column heavy distillation discharge end and next grade the distillation column the feed end is connected.

The technical scheme at least has the following beneficial effects: through the multistage distillation tower intercommunication in proper order, the raw materials gets into the distillation chamber and flows to the evaporation plant from the feed end of first order distillation tower, under the effect of evaporation plant, light molecular substance escapes and attaches to in condensation plant department, light molecular substance flows to light distillate end output along the condensation plant, so as to collect, heavy molecular substance then flows to heavy distillation discharge end and gets into the distillation chamber of next order distillation tower through the feed end of next order distillation tower along the evaporation plant, in order to carry out further distillation separation to the raw materials, thereby an equipment can carry out multistage distillation to the raw materials, and then improve the purity of distillation product and improve the distillation quality, and is easy and simple to handle.

According to some embodiments of the present invention, the condensing part is provided as a condensing pipe located at a middle portion of the distillation chamber and arranged in a vertical direction, the condensing pipe is provided at a distance from an inner wall of the distillation column, and the inner wall of the distillation column is the evaporation part.

According to some embodiments of the present invention, the distillation column is further provided with a wiper provided to an inner wall of the distillation column to wipe off the substance adhered to the evaporation part.

According to some embodiments of the utility model, the lower end of the distillation column is provided with a first diversion part, one end of the first diversion part is connected with the inner wall of the distillation column, and the other end forms the heavy distillation discharge end.

According to some embodiments of the utility model, the distillation column is provided at a lower end thereof with a second diversion portion surrounding the outside of the condensation pipe, and the other end thereof forms the light fraction end.

According to some embodiments of the utility model, the distillation tower is externally sleeved with a heating jacket, and the heating jacket is connected with a hot oil pump for providing circulating hot oil to the heating jacket.

According to some embodiments of the utility model, the distillation column is provided with a heavy distillation temporary storage tank, the heavy distillation discharge end is connected to the heavy distillation temporary storage tank, the heavy distillation temporary storage tank is connected with the feed end of the next stage of the distillation column through a discharge pipe, and the discharge pipe is connected with a material passing pump.

According to some embodiments of the utility model, the heavy ends staging tank is provided with an observation window extending from an upper end of the heavy ends staging tank to a lower end of the heavy ends staging tank.

According to some embodiments of the utility model, further comprising a feed tank connected to the feed end of the first stage distillation column via a feed pipe provided with a feed pump and a feed valve.

According to some embodiments of the utility model, the apparatus further comprises a vacuum pump connected to the feedstock tank, the plurality of distillation columns, and each vacuum pipe is provided with a vacuum valve.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a system diagram of a multistage molecular distillation apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of a first distillation column in the example of the present invention.

Reference numerals:

a first distillation column 100; a distillation chamber 110; an evaporation section 120; a condensing part 130; a water chiller 131; a feed end 140; a first flow guide part 150; a heavy ends discharge end 151; a second flow guide part 160; a light ends 161; a film scraper 170; a scraper 171; a rotating electric machine 172; a heating jacket 180; a hot oil pump 181; a heavy ends holding tank 190; a discharge pipe 191; a material passing pump 192; a viewing window 193;

a second distillation column 200;

a third distillation column 300;

a head tank 400; a feed tube 410; a feed pump 420; a feed valve 430;

a vacuum extractor 500; a vacuum tube 510; a vacuum valve 520.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1, an embodiment of the present invention provides a multistage molecular distillation apparatus including a plurality of sequentially connected distillation columns, specifically, three sequentially connected distillation columns, namely, a first distillation column 100, a second distillation column 200, and a third distillation column 300, and the structure of the first distillation column 100 will be described in detail below, and the structure of the second distillation column 200 and the third distillation column 300 can refer to the structure of the first distillation column 100 in this embodiment.

Referring to fig. 1 and 2, it can be understood that the first distillation column 100 is a tank structure, the first distillation column 100 has a vertically arranged distillation chamber 110, the first distillation column 100 is provided with an evaporation part 120 and a condensation part 130 which are positioned in the distillation chamber 110, the evaporation part 120 and the condensation part 130 are arranged at intervals, the evaporation part 120 and the condensation part 130 are both arranged vertically, wherein the evaporation part 120 can heat the substance to make the light molecular substance escape, the heavy molecular substance is attached to the evaporation part 120, the condensation part 130 can cool the substance to make part of the light molecular substance converge and attach to the condensation part 130, the upper end of the first distillation column 100 is provided with a feed end 140 facing the evaporation part 120 to make the raw material input to the evaporation part 120 in the distillation chamber 110, the lower end of the first distillation column 100 is provided with a heavy distillate discharge end 151 and a light distillate discharge end 161, wherein the lower end of the evaporation part 120 extends to the heavy distillate discharge end 151, so that the heavy molecular substances attached to the evaporation part 120 can flow to the heavy distillation discharge end 151, the lower end of the condensation part 130 extends to the light distillation end 161 so that the light molecular substances can flow to the light distillation end 161, the heavy distillation discharge end 151 of the first distillation column 100 is connected to the feed end of the second distillation column 200, and similarly, the heavy distillation discharge end of the second distillation column 200 is connected to the feed end of the third distillation column 300, so that the heavy molecular substances can enter the next-stage distillation column for further distillation separation operation to purify the distillation product or remove foreign matters. It is understood that the temperatures of the evaporation parts 120 in the three-stage distillation column are different from each other, and the temperatures of the three evaporation parts 120 may be sequentially increased to gradually separate the light molecular substances.

The raw materials enter the distillation cavity 110 from the feed end 140 of the first distillation tower 100 and flow to the evaporation part 120 through the multi-stage distillation towers which are sequentially communicated, light molecular substances escape and are attached to the condensation part 130 under the action of the evaporation part 120, the light molecular substances flow to the light distillate end 161 along the condensation part 130 and are output so as to be collected, and heavy molecular substances flow to the heavy distillation discharge end 151 along the evaporation part 120 and enter the distillation cavity 110 of the next-stage distillation tower through the feed end 140 of the next-stage distillation tower so as to further distill and separate the raw materials.

Referring to fig. 2, it can be understood that the condensing part 130 is provided as a condensing pipe which is located at the middle of the distillation chamber 110 and is arranged in the vertical direction, the condensing pipe is provided at an interval from the inner wall of the first distillation tower 100, the inner wall of the first distillation tower 100 is the evaporation part 120, generally, the condensing pipe is connected with a water cooler 131, the water cooler 131 feeds circularly flowing cold water to the condensing pipe so that the condensing pipe can condense light molecular substances, the condensing pipe is provided at the central axis of the first distillation tower 100, and the lower end of the condensing pipe extends to the light distillate port; the outer wall of the first distillation tower 100 may be connected with a heating element (not shown) to heat the inner wall of the first distillation tower 100 to evaporate the light molecular substances to escape, so as to separate the heavy molecular substances from the light molecular substances.

Referring to fig. 2, it can be understood that the first distillation column 100 is further provided with a scraper 170, generally speaking, the scraper 170 includes a scraper 171 and a rotating motor 172 in a spiral structure, the scraper 171 is connected to an output shaft of the rotating motor 172, the scraper 171 is attached to an inner wall of the first distillation column 100, when a large amount of heavy molecular substances are accumulated on the inner wall (i.e. the evaporation part 120) of the first distillation column 100, the scraper 171 can be driven to rotate by the rotating motor 172, so as to drive the heavy molecular substances attached to the evaporation part 120 to move to the heavy distillation discharge end 151, avoid the heavy molecular substances from being excessively accumulated and flowing into the light distillation end 161, and improve the distillation efficiency.

Referring to fig. 2, it can be understood that the lower end of the first distillation column 100 is provided with a first diversion part 150, one end of the first diversion part 150 is connected with the inner wall of the first distillation column 100, and the other end forms a heavy distillation discharge end 151, specifically, the first diversion part 150 is configured in a cylindrical structure, the cross section of the first diversion part 150 is arc-shaped, the upper end of the first diversion part 150 is connected with the wall of the first distillation column 100, and the lower end of the first diversion part 150 deviates from the central axis of the first distillation column 100, so as to avoid interference between the heavy distillation discharge end 151 and a condenser pipe, thereby enabling heavy molecular substances attached to the inner wall of the first distillation column 100 to flow to the heavy distillation discharge end 151 along the first diversion part 150, so as to enter the next distillation column, thereby improving the discharge smoothness of the heavy molecular substances, and having a simple structure and being easy to implement.

Referring to fig. 2, it can be understood that the lower end of the first distillation column 100 is further provided with a second diversion part 160, the second diversion part 160 is disposed around the outside of the condensation pipe, and the other end of the second diversion part 160 forms a light distillate end 161, specifically, the second diversion part 160 is also provided with a cylindrical structure, the cross section of the second diversion part 160 is also arc-shaped, the upper end of the second diversion part 160 is sleeved outside the condensation pipe, and the lower end of the second diversion part 160 is also offset from the central axis of the first distillation column 100, so that the light molecular substances attached to the condensation pipe can flow to the light distillate end 161 along the second diversion part 160, so as to output the light molecular substances and perform centralized collection, and the structure is simple and easy to implement.

Referring to fig. 2, it can be understood that a heating jacket 180 is sleeved outside the first distillation tower 100, a hot oil pump 181 is connected to the heating jacket 180, and the hot oil pump 181 is used for providing circulating hot oil to the heating jacket 180, so that the inner wall of the first distillation tower 100 can be heated by the circulating hot oil, light molecular substances in the raw material on the inner wall of the first distillation tower 100 are heated and evaporated and escape to the condensation portion 130, separation of heavy molecular substances from light molecular substances is achieved, the inner wall of the first distillation tower 100 is heated by the hot oil, the heating effect is good, and the cost is low.

Referring to fig. 2, it can be understood that the first distillation tower 100 is provided with a heavy distillation temporary storage tank 190, a heavy distillation discharge end 151 is connected to the heavy distillation temporary storage tank 190, the heavy distillation temporary storage tank 190 is connected to a feed end 140 of a next-stage distillation tower through a discharge pipe 191, the discharge pipe 191 is connected to a material passing pump 192, when a certain amount of heavy molecular substances are stored in the heavy distillation temporary storage tank 190, the material passing pump 192 is started to convey the heavy molecular substances into a second distillation tower 200 for next-step distillation operation, and the heavy distillation temporary storage tank 190 can buffer part of the heavy molecular substances, so that continuous distillation can be performed between the multi-stage distillation towers, and the distillation efficiency is improved.

Referring to fig. 2, it can be understood that the heavy distillation temporary storage tank 190 is provided with an observation window 193, and the observation window 193 extends from the upper end of the heavy distillation temporary storage tank 190 to the lower end of the heavy distillation temporary storage tank 190, so as to conveniently observe the amount of the material in the heavy distillation temporary storage tank 190, and to grasp the timing of starting the material passing pump 192.

Referring to fig. 1, it can be understood that the multistage molecular distillation apparatus further includes a raw material tank 400, the raw material tank 400 is connected to the feed end 140 of the first distillation column 100 through a feed pipe 410, the feed pipe 410 is provided with a feed pump 420 and a feed valve 430, the raw material tank 400 is used for storing a certain amount of liquid raw material in advance, when distillation is required, the feed valve 430 is opened, the feed pump 420 is started, the raw material in the raw material tank 400 is pumped to the first distillation column 100 for distillation, so that a large amount of raw material can be continuously distilled, the operation is convenient, and the distillation efficiency is high.

Referring to fig. 1, it can be understood that the multistage molecular distillation apparatus further includes a vacuum pump 500, the vacuum pump 500 is connected to the raw material tank 400, the plurality of distillation columns through a plurality of vacuum pipes 510, and each of the vacuum pipes 510 is provided with a vacuum valve 520; when the material needs to be fed into the material tank 400, the corresponding vacuum valve 520 can be opened, and the air in the material tank 400 is pumped by the vacuumizing device 500, so that negative pressure is formed in the material tank 400, and automatic feeding is realized; generally, a vacuum pipe connected to the distillation column is connected to the lower end of the distillation column, and when the distillation column performs a distillation operation, a corresponding vacuum valve is opened, and the vacuum pump 500 pumps air in the distillation column, thereby accelerating the feeding and accelerating the output of the heavy molecular substances and the light molecular substances, and further improving the distillation efficiency.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims (10)

1. A multi-stage molecular distillation apparatus, comprising:

multistage distillation column that communicates in proper order, the distillation column has the distillation chamber, the distillation column is equipped with and is located the evaporation plant and the condensation part in distillation chamber, the evaporation plant with condensation part interval arrangement, the upper end of distillation column is provided with the orientation the feed end of evaporation plant, the lower extreme of distillation column is equipped with heavy distillation discharge end and light distillate end, the evaporation plant extends to heavy distillation discharge end, the condensation part extends to light distillate end, every grade the distillation column heavy distillation discharge end and next grade the distillation column the feed end is connected.

2. The multistage molecular distillation apparatus of claim 1, wherein: the condensation part is set as a condensation pipe, the condensation pipe is positioned in the middle of the distillation cavity and is arranged along the vertical direction, the condensation pipe and the inner wall of the distillation tower are arranged at intervals, and the inner wall of the distillation tower is the evaporation part.

3. A multistage molecular distillation apparatus according to claim 2, wherein: the distillation column is also provided with a film scraper which is arranged on the inner wall of the distillation column to scrape the substances attached to the evaporation part.

4. A multistage molecular distillation apparatus according to claim 2, wherein: the lower end of the distillation tower is provided with a first diversion part, one end of the first diversion part is connected with the inner wall of the distillation tower, and the other end of the first diversion part forms the heavy distillation discharge end.

5. A multistage molecular distillation apparatus according to claim 2, wherein: and a second diversion part is arranged at the lower end of the distillation tower, the second diversion part is arranged around the outer side of the condensation pipe, and the other end of the second diversion part forms the light distillate end.

6. A multistage molecular distillation apparatus according to claim 2, wherein: the outside cover of distillation tower is equipped with the heating jacket, the heating jacket is connected with the hot-oil pump, the hot-oil pump be used for to the heating jacket provides circulating flow's hot oil.

7. The multistage molecular distillation apparatus of claim 1, wherein: the distillation column is provided with heavy distillation temporary storage tank, heavy distillation discharge end connect in heavy distillation temporary storage tank, heavy distillation temporary storage tank passes through discharging pipe and next stage the feed end of distillation column is connected, the discharging pipe is connected with the material pump.

8. The multistage molecular distillation apparatus of claim 7, wherein: the heavy distillation temporary storage tank is provided with an observation window, and the observation window extends from the upper end of the heavy distillation temporary storage tank to the lower end of the heavy distillation temporary storage tank.

9. The multistage molecular distillation apparatus of claim 1, wherein: still include the head tank, the head tank passes through inlet pipe and first order the distillation column the feed end is connected, the inlet pipe is provided with charge pump and feed valve.

10. A multistage molecular distillation apparatus according to claim 9, wherein: the vacuum extractor is connected with the raw material tank and the distillation towers through a plurality of vacuum pipes, and each vacuum pipe is provided with a vacuum valve.

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