CN110613948A - Fractionation device and fractionation method for organic chemistry experiment - Google Patents
Fractionation device and fractionation method for organic chemistry experiment Download PDFInfo
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- CN110613948A CN110613948A CN201911061819.8A CN201911061819A CN110613948A CN 110613948 A CN110613948 A CN 110613948A CN 201911061819 A CN201911061819 A CN 201911061819A CN 110613948 A CN110613948 A CN 110613948A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
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Abstract
The invention discloses a fractionating device for organic chemistry experiments, which comprises a pressure-resistant tank, a centrifugal pump, a stock solution storage tank, a resistor, a condenser and a buffer tank, wherein the pressure-resistant tank is arranged on the top of the pressure-resistant tank; the stock solution of stock solution bin gets into withstand voltage jar through the centrifugal pump, and the resistor is arranged in withstand voltage jar bottom and is used for heating the stock solution in the withstand voltage jar, and the stock solution after the heating becomes steam and gets into the condenser, repeats in the condenser pipe after the heat exchange, and the fraction gets into the buffer tank. The device solves the problems of complicated operation process and impure fraction components of the conventional organic chemical experiment fractionating device. The invention discloses a fractionation method of a fractionation device for organic chemistry experiments, which can meet the requirements of fractionation of fractions with different boiling points, sampling and circulation in the process of shunting, and cleaning of a pressure-resistant tank, and is convenient and fast to operate.
Description
Technical Field
The invention belongs to the field of organic matter fractionation, and relates to a fractionation device and a fractionation method for organic chemistry experiments.
Background
The existing fractionation device for organic chemistry experiments cannot fractionate large quantities of organic mixed solvents, and the fractionation device used in a laboratory is a glass instrument, so that the possibility of crushing exists in the experimental process; on the other hand, the lack of discharge treatment device can cause the discharge outlet to block when the discharge piles up to a certain degree at the discharge outlet, needs the staff to regularly clear up, and the result of use is relatively poor.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned disadvantages of the prior art and providing a fractionation apparatus for organic chemical experiments and a fractionation method thereof.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:
a fractionating device for organic chemical experiments comprises a pressure-resistant tank, a centrifugal pump, a stock solution storage tank, a resistor, a condenser and a buffer tank; the stock solution of stock solution bin gets into withstand voltage jar through the centrifugal pump, and the resistor is arranged in withstand voltage jar bottom and is used for heating the stock solution in the withstand voltage jar, and the stock solution after the heating becomes steam and gets into the condenser, repeats in the condenser pipe after the heat exchange, and the fraction gets into the buffer tank.
Further, the outlet of the condenser is sequentially connected with a sampling box and a needle valve; when sampling is needed, the needle valve is closed, and the sampling box is opened for sampling; when the sampling detection is unqualified, the fraction in the buffer tank enters the stock solution storage tank again.
Furthermore, the outlet of the buffer tank is also connected with a flow divider, and the outlet of each branch of the flow divider is provided with a product storage tank.
Furthermore, a pressure reducing valve is arranged between the pressure resistant tank and the condenser.
Furthermore, the product storage tanks are respectively provided with an emptying valve.
Furthermore, a flowmeter is arranged between the centrifugal pump and the pressure-resistant tank.
Furthermore, a pressure gauge and a thermometer are arranged on the pressure-resistant tank.
Furthermore, the pressure-resistant tank is also connected with a pressure relief branch, and a third emptying valve is arranged on the pressure relief branch.
Furthermore, a sewage draining branch is connected to the pressure-resistant tank, and a valve for controlling the switch is arranged on the sewage draining branch.
A method for fractionating a fractionating apparatus for organic chemical experiments, comprising the operations of:
1) when the fraction with low boiling point is needed, the centrifugal pump is opened, and the stock solution in the stock solution storage tank enters the pressure-resistant tank through the centrifugal pump; the pressure-resistant tank is in a normal pressure state, the resistor is opened to heat the pressure-resistant tank, the stock solution is changed into gas and enters the condenser, heat exchange is repeated in the condenser, and the low-boiling-point fraction is changed into liquid which sequentially passes through the buffer tank and the flow divider and finally reaches the product storage tank;
2) when high-boiling fraction is needed, the centrifugal pump is opened, and stock solution in the stock solution storage tank enters the pressure-resistant tank through the centrifugal pump; the pressure-resistant tank is in a high-pressure state, the resistor is opened to heat the pressure-resistant tank, the stock solution is changed into gas and enters the condenser, heat exchange is repeated in the condenser, and the low-boiling-point fraction is changed into liquid which sequentially passes through the buffer tank and the flow divider and finally reaches the product storage tank;
3) when sampling inspection is needed, closing the needle valve, opening the sampling box and taking out the sample for inspection;
4) when the fraction is unqualified, the fraction in the buffer tank enters the stock solution storage tank again;
5) when the pressure-resistant tank needs to be cleaned, cleaning liquid in the stock solution storage tank reaches the pressure-resistant tank through the centrifugal pump, the stirring rod and the resistor are started, and waste liquid after cleaning is discharged through the blow-off pipe.
Compared with the prior art, the invention has the following beneficial effects:
according to the fractionating device for the organic chemistry experiment, due to the existence of the pressure-resistant tank, the pressure in the pressure-resistant tank can be changed, so that the fractionating device can be suitable for fractionating fractions with the same component and different boiling points, and the problem that glass is fragile is solved; the centrifugal pump connected with the device can automatically feed materials, and can realize fractionation of a large number of substances; the buffer tank is communicated with the pressure-resistant tank, and when the purity of the fraction which is fractionated is not enough, the fraction can enter the pressure-resistant tank again to participate in the fractionation. The device solves the problems that the existing organic chemistry experiment fractionating device is complex in cleaning process, the operation device is fragile, the fraction cannot be monitored, and the fraction is not pure in components.
Furthermore, a sampling box positioned behind the condenser is convenient for sampling and detecting.
Furthermore, the flow divider connected with the buffer tank can enable different fractions to enter the storage tank through different branches;
furthermore, the pressure resistant tank is internally provided with a stirring rod and a drain pipe, so that the pressure resistant tank can be automatically cleaned.
The invention provides a fractionation method of a fractionation device for organic chemistry experiments, which can meet the requirements of fractionation of fractions with the same component and different boiling points, sampling and circulation in the process of shunting, and cleaning of a pressure-resistant tank, and is convenient and fast to operate.
Drawings
Fig. 1 is a schematic structural diagram of a rectification device for organic chemistry experiments provided by the invention.
Wherein: 1-pressure resistant tank; 2-a pressure gauge; 3-a centrifugal pump; 4-a raw material liquid storage tank; 5-a resistor; 6-thermometer; 7-a drain pipe; 8-a flow meter; 9-a flow divider; 10-a pressure reducing valve; 11-needle valves; 12-a first storage tank; 13-a first emptying valve; 14-a buffer tank; 15-a second storage tank; 16-a second evacuation valve; 17-a third evacuation valve; 18-a condenser; 19-a sampling box; 20-stirring rod.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, fig. 1 is a schematic structural diagram of a rectification apparatus for organic chemistry experiments, which includes a pressure-resistant tank 1, a pressure gauge 2, a thermometer 6 and a second evacuation valve 17 are arranged at the upper end of the pressure-resistant tank, and the rectification apparatus can monitor the temperature and pressure of the pressure-resistant tank at any time, adjust the system pressure at any time according to the real-time pressure, and ensure the system safety; the raw material liquid is conveyed from a raw material liquid storage tank 4 to the pressure-resistant tank 1 by a centrifugal pump 3, and the raw material is added into the pressure-resistant tank 1 without the help of other tools by manpower; a stirring rod 20 is also arranged in the pressure-resistant tank 1; the resistor 5 is arranged at the bottom of the pressure-resistant tank 1 and serves as a heat source; a sewage discharge pipe 7 is also arranged at the bottom of the pressure resistant tank 1, so that sewage for cleaning the pressure resistant tank is conveniently discharged; a condenser 18 for condensing the gas of the desired fraction into a liquid is installed at the outlet of the pressure-resistant tank 1; the sampling box 19 is arranged at the outlet of the condenser 18, so that the product purity can be conveniently and timely sampled and detected; the buffer tank 14 is installed at the downstream of the sampling port 19, and is used for buffering and storing the products, and then the products are conveyed to the product storage tanks by the different branches conveyed by the flow divider 9, and two product storage tanks, namely a first product storage tank 12 and a second product storage tank 15, can be arranged in figure 1, and more than 2 product storage tanks can be arranged; the first product storage tank 12 and the second product storage tank 15 are provided with a second evacuation valve 16 and a third evacuation valve 17, respectively, for regulating the pressure.
A method for fractionating a fractionating apparatus for organic chemical experiments, comprising the operations of:
1) when the fraction with low boiling point is needed, the centrifugal pump 3 is opened, and the stock solution in the stock solution storage tank enters the pressure-resistant tank 1 through the centrifugal pump 3; the pressure-resistant tank is in a normal pressure state, the resistor 5 is opened to heat the pressure-resistant tank 1, the stock solution is changed into gas and enters the condenser 18, heat exchange is carried out repeatedly in the condenser 18, and the low-boiling-point fraction is changed into liquid and finally reaches the product storage tank after sequentially passing through the buffer tank 14 and the flow divider 9;
2) when high-boiling-point fractions are needed, the centrifugal pump 3 is opened, and stock solution in the stock solution storage tank enters the pressure-resistant tank 1 through the centrifugal pump 3; the pressure-resistant tank is in a high-pressure state, the resistor 5 is opened to heat the pressure-resistant tank 1, the stock solution is changed into gas and enters the condenser 18, heat exchange is repeated in the condenser 18, and the low-boiling-point fraction is changed into liquid and finally reaches the product storage tank after sequentially passing through the buffer tank 14 and the flow divider 9;
3) when sampling inspection is needed, the needle valve 11 is closed, and the sampling box 19 is opened to take out a sample for inspection;
4) when the fraction is unqualified, the fraction in the buffer tank 14 enters the stock solution storage tank 4 again;
5) when the pressure-resistant tank 1 needs to be cleaned, cleaning liquid in the stock solution storage tank 4 reaches the pressure-resistant tank 1 through the centrifugal pump 3, the stirring rod 20 and the resistor 5 are started, and waste liquid after cleaning is discharged through a discharge pipe.
The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.
Claims (10)
1. The fractionation device for organic chemistry experiments is characterized by comprising a pressure-resistant tank (1), a centrifugal pump (3), a stock solution storage tank (4), a resistor (5), a condenser (18) and a buffer tank (14);
the stock solution of the stock solution storage tank (4) enters the pressure-resistant tank (1) through the centrifugal pump (3), the resistor (5) is arranged at the bottom of the pressure-resistant tank (1) and used for heating the stock solution in the pressure-resistant tank (1), the heated stock solution becomes steam and enters the condenser (18), and after heat exchange is repeatedly carried out in the condenser pipe, the fraction enters the buffer tank (14).
2. The fractionation apparatus for organic chemical experiments according to claim 1, wherein the outlet of the condenser (18) is sequentially connected with a sampling tank (19) and a needle valve (11);
when sampling, the needle valve (11) is closed, and the sampling box (19) is opened for sampling; and if the sampling detection fails, the fraction in the buffer tank (14) enters the stock solution storage tank (4) again.
3. The fractionation plant for organic chemical experiments according to claim 2, wherein the outlet of the buffer tank (14) is further connected with a splitter (9), and each branch outlet of the splitter (9) is provided with a product storage tank.
4. The fractionation plant for organic chemical experiments according to claim 3, wherein a pressure reducing valve (10) is further provided between the pressure-resistant tank (1) and the condenser (18).
5. The fractionation apparatus for organic chemical experiments according to claim 3, wherein the product storage tanks are each provided with an evacuation valve.
6. The fractionation plant for organic chemical experiments according to claim 3, wherein a flow meter (8) is provided between the centrifugal pump (3) and the pressure-resistant tank (1).
7. The fractionation apparatus for organic chemical experiments according to claim 6, wherein the pressure-resistant tank (1) is provided with a pressure gauge (2) and a temperature gauge (6).
8. The fractionation plant for organic chemical experiments according to claim 7, wherein the pressure-resistant tank (1) is further connected with a pressure relief branch, and a third evacuation valve (17) is disposed on the pressure relief branch.
9. The fractionation plant for organic chemical experiments according to claim 8, wherein a blowdown branch is further connected to the pressure-resistant tank (1), and a valve for controlling the on-off is provided on the blowdown branch.
10. The method for fractionating apparatus according to claim 9, comprising the following operations:
1) when the fraction with low boiling point is needed, the centrifugal pump (3) is opened, and the stock solution in the stock solution storage tank enters the pressure-resistant tank (1) through the centrifugal pump (3); the pressure-resistant tank is in a normal pressure state, the resistor (5) is opened to heat the pressure-resistant tank (1), the stock solution is changed into gas and enters the condenser (18), heat exchange is repeated in the condenser (18), and the low-boiling fraction is changed into liquid and reaches the product storage tank after sequentially passing through the buffer tank (14) and the flow divider (9);
2) when high-boiling-point fractions are needed, the centrifugal pump (3) is opened, and stock solution in the stock solution storage tank enters the pressure-resistant tank (1) through the centrifugal pump (3); the pressure-resistant tank is in a high-pressure state, the resistor (5) is opened to heat the pressure-resistant tank (1), the stock solution is changed into gas and enters the condenser (18), heat exchange is repeated in the condenser (18), and the low-boiling fraction is changed into liquid and reaches the product storage tank after sequentially passing through the buffer tank (14) and the flow divider (9);
3) when sampling inspection is needed, the needle valve (11) is closed, and the sampling box (19) is opened to take out a sample for inspection;
4) when the fraction is unqualified, the fraction in the buffer tank (14) enters the stock solution storage tank (4) again;
5) when the pressure-resistant tank (1) needs to be cleaned, cleaning liquid in the stock solution storage tank (4) reaches the pressure-resistant tank (1) through the centrifugal pump (3), the stirring rod (20) and the resistor (5) are started, and waste liquid after cleaning is discharged through the blow-off pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911061819.8A CN110613948A (en) | 2019-11-01 | 2019-11-01 | Fractionation device and fractionation method for organic chemistry experiment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911061819.8A CN110613948A (en) | 2019-11-01 | 2019-11-01 | Fractionation device and fractionation method for organic chemistry experiment |
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| CN110613948A true CN110613948A (en) | 2019-12-27 |
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Application publication date: 20191227 |
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