CN215049789U - Propylene carbonate purification system - Google Patents
Propylene carbonate purification system Download PDFInfo
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- CN215049789U CN215049789U CN202121463979.8U CN202121463979U CN215049789U CN 215049789 U CN215049789 U CN 215049789U CN 202121463979 U CN202121463979 U CN 202121463979U CN 215049789 U CN215049789 U CN 215049789U
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Abstract
A propylene carbonate purification system relates to the technical field of propylene carbonate purification, and adopts the technical scheme that the propylene carbonate purification system comprises a heating device, a vacuum separation device, a vacuum pump, a purification device, a finished product storage container, an input pipeline, a first liquid pipeline, a second liquid pipeline, a third liquid pipeline and a fourth liquid pipeline, wherein electromagnetic valves are arranged at one end of the third liquid pipeline, facing the finished product storage container, and the fourth liquid pipeline, and a resistivity sensor is arranged at one end of the third liquid pipeline, facing the purification device; the air outlet of the vacuum separation device is connected to a vacuum pump; and the electromagnetic valve and the resistivity sensor are in signal connection with the controller. The utility model discloses can get rid of moisture and ion in the liquid medicine, utilize the negative correlation between the boiling point of vacuum and water simultaneously, improve vacuum, reach the boiling point of water under lower temperature, with moisture vaporization, the cost is reduced.
Description
Technical Field
The utility model relates to a propylene carbonate purification technical field especially relates to a propylene carbonate purification system.
Background
Impurities in the propylene carbonate solution, such as ions and moisture, reduce the resistivity. Commercially available propylene carbonate solutions have a low resistivity and therefore require purification such as deionization before use. Because propylene carbonate has a corrosive effect on materials such as ABS plastics, organic glass and the like, an electrodialysis purification device cannot be directly used, only a resin filter is used for removing ions in liquid medicine, but the resin contains 2-3% of water, and the water absorbed by the liquid medicine after passing through the resin becomes a main factor influencing the resistivity.
SUMMERY OF THE UTILITY MODEL
To the problem that prior art scheme liquid medicine can absorb moisture, reduce resistivity when getting rid of the ion, the utility model provides a propylene carbonate purification system can get rid of moisture and ion in the liquid medicine.
The utility model provides a following technical scheme: a propylene carbonate purification system comprises a heating device, wherein a liquid inlet of the heating device is connected with an input pipeline, a liquid outlet of the heating device is connected to a liquid inlet of a vacuum separation device through a first liquid pipeline, a liquid outlet of the vacuum separation device is connected to a purification device through a second liquid pipeline, the purification device is connected to a finished product storage container through a third liquid pipeline, a fourth liquid pipeline communicated with the input pipeline is arranged on the third liquid pipeline, electromagnetic valves are arranged at one end, facing the finished product storage container, of the third liquid pipeline and the fourth liquid pipeline, and a resistivity sensor is arranged at one end, facing the purification device, of the third liquid pipeline; the air outlet of the vacuum separation device is connected to a vacuum pump; and the electromagnetic valve and the resistivity sensor are in signal connection with the controller.
Preferably, the device also comprises a raw material storage container; heating device includes the heating chamber, the heating chamber top is provided with the ball-cock assembly, the raw materials storage container passes through the input pipeline is connected to the ball-cock assembly, the input pipeline orientation the one end of raw materials storage container is provided with the valve.
Preferably, the air outlet of the vacuum separation device is connected to the air inlet of the dehydration device, and the air outlet of the dehydration device is connected to the vacuum pump.
Preferably, the first liquid conduit is provided with a regulating valve.
Preferably, the vacuum separation device is provided with a pressure sensor, and the pressure sensor and the vacuum pump are in signal connection with a controller.
Preferably, the purification device is a resin filter.
Preferably, a delivery pump is arranged on the second liquid pipeline.
The utility model has the advantages that: the characteristic that the boiling point temperature of the propylene carbonate is higher than that of water is utilized to vaporize the water, so that the water in the propylene carbonate is removed, meanwhile, the negative correlation between the vacuum degree and the boiling point of the water is utilized to improve the vacuum degree, the boiling point of the water is reached at a lower temperature, the water is vaporized, and the cost is reduced; the dehydrating device can remove the vapor in the gas, thereby avoiding influencing the oil and the efficiency of the vacuum pump and prolonging the service life of the vacuum pump.
Drawings
Fig. 1 is a connection diagram of an apparatus according to an embodiment of the present invention.
Reference numerals: 1-a raw material storage container, 11-an input pipeline, 2-a heating device, 21-a first liquid pipeline, 3-a vacuum separation device, 31-a second liquid pipeline, 32-a pressure sensor, 33-a delivery pump, 4-a purification device, 41-a third liquid pipeline, 42-a fourth liquid pipeline, 43-an electromagnetic valve, 44-a resistivity sensor, 5-a finished product storage container, 6-a vacuum pump and 7-a dehydration device.
Detailed Description
The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings and reference numerals, so that those skilled in the art can implement the embodiments after studying the specification. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The utility model provides a propylene carbonate purification system as shown in fig. 1, including heating device 2, the inlet of heating device 2 is connected with input pipeline 11, the outlet of heating device 2 is connected to the inlet of vacuum separation device 3 through first liquid pipeline 21, the outlet of vacuum separation device 3 is connected to purification device 4 through second liquid pipeline 31, purification device 4 is connected to finished product storage container 5 through third liquid pipeline 41, be provided with the fourth liquid pipeline 42 that communicates with input pipeline 11 on the third liquid pipeline 41, the third liquid pipeline 41 is towards the one end of finished product storage container 5 and fourth liquid pipeline 42 all are provided with solenoid valve 43, the third liquid pipeline 41 towards the one end of purification device 4 is provided with resistivity sensor 44; the air outlet of the vacuum separation device 3 is connected to a vacuum pump 6; the electromagnetic valve 43 and the resistivity sensor 44 are in signal connection with the controller.
The heating device is used for heating the temperature of the propylene carbonate liquid medicine to enable the propylene carbonate liquid medicine to reach the boiling point of water under a certain vacuum degree; specifically, the heating device can adopt a constant-temperature electric heater with PID temperature control technology. The vacuum separation device is used for removing water in the liquid medicine, an air outlet of the vacuum separation device is connected with the vacuum pump, the vacuum pump pumps air outwards, the vacuum degree in the vacuum separation device is improved, and according to the negative correlation relationship between the existing vacuum degree and the boiling point of water, the boiling point of water can be reduced by improving the vacuum degree, so that the water can be boiled and vaporized at a lower temperature, the power of the heating device is reduced, and the energy consumption is reduced; the vacuum separation device can adopt a vacuum separator, and the vacuum pump can adopt a rotary vane vacuum pump. The purifying device is used for removing ions in the liquid medicine and can adopt a resin filter. Impurities such as moisture and ions in the liquid medicine can affect the resistivity of the liquid medicine, the resistivity sensor is used for detecting the resistivity of the liquid medicine purified by the purifying device and sending a resistivity signal to the controller, and the controller judges whether the resistivity of the liquid medicine reaches a standard according to the standard resistivity input in advance so as to control the on-off of the electromagnetic valves on the third liquid pipeline and the fourth liquid pipeline and control the flow direction of the liquid medicine; the controller can adopt a single chip microcomputer or a programmable turbine controller. The finished product storage container can adopt a galvanized iron barrel or a baking varnish barrel.
The utility model discloses when using, the propylene carbonate liquid medicine is heated to the uniform temperature after through being heated in the input pipeline gets into heating device, gets into vacuum separation device through first fluid conduit, and moisture is because of the boiling vaporizes, separates from the liquid medicine, is siphoned away by the vacuum pump through the gas outlet, and the liquid medicine then gets into the purification device through second fluid conduit. After ions in the liquid medicine are removed by the purifying device, the liquid medicine enters the third liquid pipeline, the resistivity sensor detects the resistivity of the liquid medicine and transmits a resistivity signal to the controller, the controller judges whether the resistivity of the liquid medicine reaches a standard or not, in a continuous time period, if the resistivity of the liquid medicine reaches the standard, the electromagnetic valve on the fourth liquid pipeline is closed, the electromagnetic valve on the third liquid pipeline is opened, the liquid medicine enters the finished product storage container, if the resistivity of the liquid medicine does not reach the standard, the electromagnetic valve on the third liquid pipeline is closed, the electromagnetic valve on the fourth liquid pipeline is opened, the liquid medicine enters the heating device again, and the water removing and purifying steps are carried out again until the resistivity reaches the standard.
Preferably, the device also comprises a raw material storage container 1; heating device 2 includes the heating chamber, the heating chamber top is provided with the ball-cock assembly, raw materials storage container 1 passes through input pipeline 11 is connected to the ball-cock assembly, input pipeline 11 orientation the one end of raw materials storage container 1 is provided with the valve. The raw material storage container can adopt a galvanized iron barrel or a baking varnish barrel; the float valve is used for controlling the volume of the liquid medicine in the heating cavity and automatically controlling the switch of the input pipeline according to the height of the liquid level in the heating cavity; the valve on the input pipeline can adopt an electromagnetic valve and/or a manual ball valve, and is convenient to maintain and overhaul.
Preferably, the air outlet of the vacuum separation device 3 is connected to the air inlet of the dehydration device 7, and the air outlet of the dehydration device 7 is connected to the vacuum pump 6. The dehydration device is used for removing water vapor in gas, prevents that water vapor from influencing the service life of the vacuum pump, and can adopt a molecular sieve filter to adsorb water vapor.
Preferably, the first liquid pipe 21 is provided with a regulating valve for controlling the flow of the liquid medicine into the vacuum separation apparatus.
Preferably, the vacuum separation device 3 is provided with a pressure sensor 32, and the pressure sensor 32 and the vacuum pump 6 are both in signal connection with the controller. The pressure sensor is used for detecting the vacuum degree in the vacuum separation device and transmitting a vacuum degree signal to the controller, and the controller compares the vacuum degree signal with a pre-input vacuum degree standard value so as to control the power of the vacuum pump and maintain the vacuum degree of the vacuum separation device near the vacuum degree standard value.
Preferably, the purification device 4 is a resin filter.
Preferably, a delivery pump 33 is disposed on the second liquid pipeline 31, and the delivery pump may be a centrifugal pump for pressurization.
The foregoing is directed to one or more embodiments of the present invention, which are described in some detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (7)
1. A propylene carbonate purification system which is characterized in that: comprises a heating device (2), a liquid inlet of the heating device (2) is connected with an input pipeline (11), the liquid outlet of the heating device (2) is connected with the liquid inlet of the vacuum separation device (3) through a first liquid pipeline (21), the liquid outlet of the vacuum separation device (3) is connected to the purification device (4) through a second liquid pipeline (31), the purification device (4) is connected to a finished product storage container (5) by a third liquid conduit (41), a fourth liquid pipeline (42) communicated with the input pipeline (11) is arranged on the third liquid pipeline (41), the end of the third liquid pipeline (41) facing the finished product storage container (5) and the fourth liquid pipeline (42) are both provided with electromagnetic valves (43), one end of the third liquid pipeline (41) facing the purifying device (4) is provided with a resistivity sensor (44); the air outlet of the vacuum separation device (3) is connected to a vacuum pump (6); the electromagnetic valve (43) and the resistivity sensor (44) are in signal connection with the controller.
2. The propylene carbonate purification system of claim 1, wherein: also comprises a raw material storage container (1); heating device (2) are including the heating chamber, the heating chamber top is provided with the ball-cock assembly, raw materials storage container (1) passes through input pipeline (11) are connected to the ball-cock assembly, input pipeline (11) orientation the one end of raw materials storage container (1) is provided with the valve.
3. The propylene carbonate purification system of claim 1, wherein: an air outlet of the vacuum separation device (3) is connected to an air inlet of a dehydration device (7), and an air outlet of the dehydration device (7) is connected to a vacuum pump (6).
4. The propylene carbonate purification system of claim 1, wherein: the first liquid conduit (21) is provided with a regulating valve.
5. The propylene carbonate purification system of claim 1, wherein: the vacuum separation device (3) is provided with a pressure sensor (32), and the pressure sensor (32) and the vacuum pump (6) are in signal connection with a controller.
6. The propylene carbonate purification system of claim 1, wherein: the purification device (4) is a resin filter.
7. The propylene carbonate purification system of claim 1, wherein: and a delivery pump (33) is arranged on the second liquid pipeline (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121463979.8U CN215049789U (en) | 2021-06-30 | 2021-06-30 | Propylene carbonate purification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121463979.8U CN215049789U (en) | 2021-06-30 | 2021-06-30 | Propylene carbonate purification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215049789U true CN215049789U (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121463979.8U Active CN215049789U (en) | 2021-06-30 | 2021-06-30 | Propylene carbonate purification system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215049789U (en) |
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2021
- 2021-06-30 CN CN202121463979.8U patent/CN215049789U/en active Active
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