CN213912459U - Perfluoroisobutyronitrile gas separation and purification tower - Google Patents
Perfluoroisobutyronitrile gas separation and purification tower Download PDFInfo
- Publication number
- CN213912459U CN213912459U CN202022363847.XU CN202022363847U CN213912459U CN 213912459 U CN213912459 U CN 213912459U CN 202022363847 U CN202022363847 U CN 202022363847U CN 213912459 U CN213912459 U CN 213912459U
- Authority
- CN
- China
- Prior art keywords
- tower
- storage tank
- pipeline
- bottom storage
- electromagnetic valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Separation By Low-Temperature Treatments (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The perfluoroisobutyronitrile gas separation and purification tower comprises a tower bottom storage tank, a packed column and a tower top condenser; a tower bottom storage tank is arranged below the packing column, a communication pipeline is arranged between the tower bottom storage tank and the packing column, and a first manual valve is arranged on the communication pipeline; top and top condensation of packed columnThe bottom parts of the devices are connected and communicated; the top of the condenser is connected with a discharge pipeline; the middle part of the packed column is provided with a feed inlet; the holding vessel is equipped with outside circulation pipeline at the bottom of the tower, the bottom of holding vessel at the bottom of entrance point intercommunication tower of outside circulation pipeline, and the spraying facility at the top in the holding vessel at the bottom of the tower is established to outside circulation pipeline's exit end intercommunication, the utility model discloses can be with dissolving in C in the holding vessel at the bottom of the tower4F7CO in N2Gas separation, complete C4F7N/CO2Separating the mixed gas to obtain high-purity C4F7And N liquid.
Description
Technical Field
The utility model belongs to the technical field of gas separation purification, concretely relates to perfluor isobutyronitrile gas separation purification tower.
Background
Sulfur hexafluoride (SF) is often used in conventional electrical equipment6) The gas is used as an insulating medium, has a large global warming potential, and the single-molecule greenhouse effect is about carbon dioxide (CO)2) 23900 times of the molecule. In order to realize green development of the power industry, sulfur hexafluoride (SF) is reduced6) The search for alternative environment-friendly insulating gas is imperative for the emission of gas. Perfluoroisobutyronitrile (C)4F7N) Global Warming Potential (GWP) is 2100, Ozone Depletion Potential (ODP) is 0, and can be used as SF6Potential replacement gases.
C4F7The N has a liquefaction temperature of-4.7 ℃ and is therefore usually associated with low-boiling CO in industrial applications2Mixed use for insulating medium of electrical equipment. During operation of the electrical apparatus, C4F7N/CO2The impurity content of the mixed gas such as purity, humidity (micro water), decomposition product and the like can be changed, and C needs to be finished by a purifying tower4F7N/CO2And (4) separating the two gases. For ease of storage and transport, and to reduce the number of cylinders, the gaseous mixture is typically converted to a liquid state by the action of pressure and temperature reduction.
Generally, a separation and purification tower is pressurized and cooled according to the difference of liquefaction temperatures of two substances, so that the easily liquefied substance is changed into a liquid state and stored at the bottom of the purification tower, and the light component gas which is not easily liquefied is gathered at the top of the purification tower and discharged through a discharge port. Due to CO2Gas is very soluble in C4F7In the N liquid, the traditional rectifying tower pair C is adopted4F7N is separated and purified, and the liquid obtained at the bottom of the tower is C4F7N/CO2Mixture of C which does not satisfy industrial requirements4F7The purity of N is required.
Disclosure of Invention
The utility model provides a perfluor isobutyronitrile (C) for solving the defects in the prior art4F7N) a separation and purification tower.
In order to solve the technical problem, the utility model adopts the following technical scheme: the perfluoroisobutyronitrile gas separation and purification tower comprises a tower bottom storage tank, a packed column and a tower top condenser;
a tower bottom storage tank is arranged below the packing column, a communication pipeline is arranged between the packing column and the tower bottom storage tank, and a first manual valve is arranged on the communication pipeline;
the top of the packed column is connected and communicated with the bottom of the overhead condenser, and the packed column and the overhead condenser can perform heat and mass transfer;
a discharge pipeline is arranged at the top of the tower top condenser, a first electromagnetic valve is arranged on the discharge pipeline, and the light components are discharged out of the tower through a discharge port of the discharge pipeline; the middle part of the packed column is provided with a feed inlet for introducing materials into the packed column.
The tower bottom storage tank is provided with an external circulation pipeline, the inlet end of the external circulation pipeline is communicated with the bottom of the tower bottom storage tank, the outlet end of the external circulation pipeline is communicated with a spraying facility arranged at the top of the tower bottom storage tank, a second manual valve, a second electromagnetic valve, a circulating pump and a two-position three-way electromagnetic valve are sequentially arranged on the external circulation pipeline from the inlet end to the outlet end, the common end of the two-position three-way electromagnetic valve is connected with the outlet end of the circulating pump, and a first interface of the two-position three-way electromagnetic valve is connected with the inlet of the spraying facility; the second interface of the three-way electromagnetic valve is connected with an output pipeline as C4F7And outputting the N liquid.
The tower top condenser is provided with an inlet and an outlet for the circulation of the refrigerant, and the inlet and the outlet are respectively positioned at the upper part and the lower part of the tower top condenser.
The filler column is filled with filler C4F7N/CO2The mixture enters the separation and purification tower from a feed inlet in the middle of the packed column, and separation and purification are carried out.
The refrigerant enters the overhead condenser from the inlet at the upper end of the condenser and flows out from the outlet at the lower end of the condenser to realize the pair C4F7N/CO2And (4) circulating refrigeration of the mixture.
The bottom of the tower bottom storage tank is provided with a heating rod for heating the inner part C of the tower bottom storage tank4F7Heating the N liquid to enable C4F7The N liquid boils, thereby emitting CO2A gas.
The utility model relates to a pipeline all adopts corrosion resistant material.
The working process of the utility model is divided into primary purification, secondary purification and C4F7N liquid output three parts:
first, the primary purification process of the product
C4F7N/CO2The mixture enters a packed column of a separation and purification tower through a feed inlet C4F7N/CO2The mixture is subjected to heat and mass transfer in a separation and purification tower, and C with lower boiling point4F7N is liquefied in the tower top when meeting cold and is gathered in a storage tank at the tower bottom under the action of gravity, and CO2The gas is collected at the top of the tower and discharged out of the tower through a discharge port.
Second, product re-purification process
Separating part of CO in the purifying tower2C dissolved in tower bottom storage tank in primary purification process4F7In the N liquid. Opening a first electromagnetic valve to adjust the pressure in the tower, controlling the temperature in the storage tank at the bottom of the tower through a heating rod at the bottom of the tower when the reading of a pressure sensor is 150 kPa, closing a first manual valve and opening a second electromagnetic valve when the reading of a temperature sensor is-10 ℃, and starting a circulating pump to enable C in the storage tank at the bottom of the tower to be C4F7The N liquid returns to the tower bottom storage tank through the spraying facility through a second manual valve, a second electromagnetic valve, a circulating pump and a three-way electromagnetic valve.
In a circulating flow process, dissolve in C4F7CO in N liquids2And releasing. When the pressure sensor has a reading of 250 kPa. And stopping the circulating pump under the condition that the reading of the temperature sensor is-10 ℃, opening the first manual valve for about 10s, closing the first manual valve after the reading of the pressure sensor is reduced, and starting the circulating pump to work in cycles. And when the reading of the temperature sensor is-10 ℃ and the reading of the pressure sensor is less than 96 kPa, finishing the re-purification process.
III, C4F7N liquid output
Opening a second manual valve and a second electromagnetic valve, starting the circulating pump, opening a three-way electromagnetic valve (enabling the common end to be communicated with a second interface), and connecting the tower bottom C through an output pipeline4F7And outputting the N liquid to an external storage tank.
The utility model discloses with C in the storage tank at the bottom of the tower4F7N/CO2CO in mixed liquids2Releasing and solving the problem of CO in the traditional rectification separation and purification process2Dissolved in C4F7Problem of N, increase of C4F7The purity of N.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
As shown in fig. 1, the perfluoroisobutyronitrile gas separation and purification tower comprises a tower bottom storage tank 6, a packed column 3 and a tower top condenser 2;
a tower bottom storage tank 6 is arranged below the packed column 3, a communicating pipeline is arranged between the packed column 3 and the tower bottom storage tank 6, and a first manual valve 5 is arranged on the communicating pipeline;
the top of the packed column 3 is connected and communicated with the bottom of the overhead condenser 2, and the packed column and the overhead condenser can perform heat and mass transfer;
a discharge pipeline 19 is arranged at the top of the tower top condenser, a first electromagnetic valve 1 is arranged on the discharge pipeline 19, and light components are discharged out of the tower through a discharge port 14 of the discharge pipeline 19;
the middle part of the packed column 3 is provided with a feed inlet 17 for feeding materials into the packed column.
The tower bottom storage tank 6 is provided with an external circulation pipeline 20, the inlet end of the external circulation pipeline 20 is communicated with the bottom of the tower bottom storage tank 6, and the outlet end of the external circulation pipeline 20 is communicated with the tower bottom storage tankA spraying facility 18 at the top in the storage tank 6, wherein a second manual valve 9, a second electromagnetic valve 10, a circulating pump 12 and a two-position three-way electromagnetic valve 11 are sequentially arranged on an external circulating pipeline 20 from an inlet end to an outlet end, the common end of the two-position three-way electromagnetic valve 11 is connected with the outlet end of the circulating pump 12, and a first interface 111 of the two-position three-way electromagnetic valve 11 is connected with an inlet of the spraying facility 18; the second port 112 of the three-way electromagnetic valve 11 is connected with the output pipeline 13 as C4F7And outputting the N liquid.
The overhead condenser 2 is provided with an inlet 15 and an outlet 16 for circulating a refrigerant, and the inlet 15 and the outlet 16 are respectively positioned at the upper part and the lower part of the overhead condenser 2.
A pressure sensor 4 and a temperature sensor 8 are arranged on the tower bottom storage tank 6 to monitor the temperature and the pressure in the tower, a heating rod is arranged at the bottom in the tower bottom storage tank 6 to control the C in the tower bottom storage tank4F7And heating the N liquid.
The refrigerant enters the overhead condenser 2 from the upper end inlet 15 of the condenser and flows out from the lower end outlet 16 of the condenser to realize the pair C4F7N/CO2And (4) circulating refrigeration of the mixture.
The filler column 3 is filled with filler C4F7N/CO2The mixture enters from a feed inlet 17 at the middle part of the packed column and begins to be separated and purified.
The bottom in the tower bottom storage tank 6 is provided with a heating rod 7 for heating the C in the tower bottom storage tank 24F7Heating the N liquid to enable C4F7The N liquid boils, thereby emitting CO2A gas.
In addition, a temperature sensor 8 and a pressure sensor 4 are respectively arranged on the tank body of the tower bottom storage tank 6, and the temperature and the pressure in the tower are monitored.
The utility model relates to a pipeline all adopts corrosion resistant material.
The working process of the utility model is divided into primary purification, secondary purification and C4F7N liquid output three parts:
first, the primary purification process of the product
C4F7N/CO2The mixture enters the packed column 3 through the feed port 17,C4F7N/CO2the mixture is subjected to heat and mass transfer in a separation and purification tower, and C with lower boiling point4F7N is liquefied in the tower top when meeting cold and is gathered in a storage tank 2 at the tower bottom under the action of gravity, and CO2The gas collects at the top of the column and is discharged out of the column through the discharge port 14.
Second, product re-purification process
Part of CO in the packed column2C dissolved in the storage tank 2 at the bottom of the column during the primary purification process4F7In the N liquid. Opening the first electromagnetic valve 1 to adjust the pressure in the tower, controlling the temperature in the storage tank at the bottom of the tower by the heating rod 7 at the bottom of the tower when the reading of the pressure sensor 4 is 150 kPa, closing the first manual valve 5, opening the second electromagnetic valve 10 when the reading of the temperature sensor 8 is-10 ℃, and starting the circulating pump 12 to ensure that C in the storage tank 2 at the bottom of the tower is4F7The N liquid is returned to the bottom storage tank 2 through the second manual valve 9, the second electromagnetic valve 10, the circulation pump 12 and the three-way electromagnetic valve 11 via the spraying facility 18.
In a circulating flow process, dissolve in C4F7CO in N liquids2And releasing. When the reading of the pressure sensor 4 is 250 kPa and the reading of the temperature sensor is-10 ℃, the operation of the circulating pump 12 is stopped, the first manual valve 5 is opened for about 10s, after the reading of the pressure sensor 4 is reduced, the first manual valve 5 is closed, and the circulating pump 12 is started to operate in cycles. And when the reading of the temperature sensor is-10 ℃ and the reading of the pressure sensor 4 is less than 96 kPa, finishing the re-purification process.
III, C4F7N liquid output
The second manual valve 9 and the second electromagnetic valve 10 are opened, the circulating pump 12 is started, the three-way electromagnetic valve 11 is opened (the common end of the three-way electromagnetic valve is communicated with the second interface 112), and the tower bottom C is connected with the output pipeline 134F7And outputting the N liquid to an external storage tank.
The utility model discloses with C in the storage tank at the bottom of the tower4F7N/CO2CO in mixed liquids2Releasing and solving the problem of CO in the traditional rectification separation and purification process2Dissolved in C4F7Problem of N, increase of C4F7Purity of NAnd (4) degree.
The present embodiment is not intended to limit the shape, material, structure, etc. of the present invention in any form, and all of the technical matters of the present invention belong to the protection scope of the present invention to any simple modification, equivalent change and modification made by the above embodiments.
Claims (4)
1. The perfluoroisobutyronitrile gas separation and purification tower is characterized in that: comprises a tower bottom storage tank (6), a packed column (3) and a tower top condenser (2);
a tower bottom storage tank (6) is arranged under the filler column (3), a communication pipeline is arranged between the filler column (3) and the tower bottom storage tank (6), and a first manual valve (5) is arranged on the communication pipeline;
the top of the packed column (3) is connected and communicated with the bottom of the overhead condenser (2), and the packed column and the overhead condenser can perform heat and mass transfer;
a discharge pipeline (19) is arranged at the top of the tower top condenser, a first electromagnetic valve (1) is arranged on the discharge pipeline (19), and the light components are discharged out of the tower through a discharge port (14) of the discharge pipeline (19);
the middle part of the packing column (3) is provided with a feed inlet (17) for introducing materials into the packing column.
2. The perfluoroisobutyronitrile gas separation purification column according to claim 1, wherein: the tower bottom storage tank (6) is provided with an external circulation pipeline (20), the inlet end of the external circulation pipeline (20) is communicated with the bottom of the tower bottom storage tank (6), the outlet end of the external circulation pipeline (20) is communicated with a spraying facility (18) arranged at the inner top of the tower bottom storage tank (6), the external circulation pipeline (20) is sequentially provided with a second manual valve (9), a second electromagnetic valve (10), a circulating pump (12) and a two-position three-way electromagnetic valve (11) from the inlet end to the outlet end, the common end of the two-position three-way electromagnetic valve (11) is connected with the outlet end of the circulating pump (12), and a first interface (111) of the two-position three-way electromagnetic valve (11) is connected with the inlet of the spraying facility (18);
the second interface (112) of the three-way electromagnetic valve (11) is connected with the inputThe outlet pipe (13) is used as C4F7And outputting the N liquid.
3. The perfluoroisobutyronitrile gas separation purification column according to claim 1, wherein: the tower top condenser (2) is provided with an inlet (15) and an outlet (16) for the circulation of the refrigerant, and the inlet (15) and the outlet (16) are respectively positioned at the upper part and the lower part of the tower top condenser (2).
4. The perfluoroisobutyronitrile gas separation purification column according to claim 1, wherein: a pressure sensor (4) and a temperature sensor (8) are arranged on the tower bottom storage tank (6) to monitor the temperature and the pressure in the tower, a heating rod is arranged at the bottom in the tower bottom storage tank (6) to measure the temperature inside the tower bottom storage tank4F7And heating the N liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022363847.XU CN213912459U (en) | 2020-10-22 | 2020-10-22 | Perfluoroisobutyronitrile gas separation and purification tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022363847.XU CN213912459U (en) | 2020-10-22 | 2020-10-22 | Perfluoroisobutyronitrile gas separation and purification tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213912459U true CN213912459U (en) | 2021-08-10 |
Family
ID=77224742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022363847.XU Active CN213912459U (en) | 2020-10-22 | 2020-10-22 | Perfluoroisobutyronitrile gas separation and purification tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213912459U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116899360A (en) * | 2023-07-13 | 2023-10-20 | 广州超凌热力设备有限公司 | Multistage recovery processing device of mixed gas |
-
2020
- 2020-10-22 CN CN202022363847.XU patent/CN213912459U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116899360A (en) * | 2023-07-13 | 2023-10-20 | 广州超凌热力设备有限公司 | Multistage recovery processing device of mixed gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102173392B (en) | Sulfur hexafluoride gas separation and purification device and purification method thereof | |
| CN106979664B (en) | Atmospheric carbon dioxide liquifying method | |
| CN208332859U (en) | Helium and liquefied system are proposed from natural gas | |
| CN108458549A (en) | Helium and liquefied System and method for are carried from natural gas | |
| CN106288653A (en) | A kind of single column cryogenic rectification reclaims device and the method for purification recovery argon of argon | |
| CN213912459U (en) | Perfluoroisobutyronitrile gas separation and purification tower | |
| CN106753630A (en) | A kind of gas hydrates synthesize decomposer and synthesis technique | |
| CN104667842A (en) | Cooling device of high-temperature ammonia-containing gas sampling system | |
| CN206985717U (en) | A kind of helium purifies recovery system | |
| CN105135820A (en) | Method and system for manufacturing LNG through gas containing air | |
| CN220070763U (en) | Device for separating high-purity hydrogen chloride from byproduct hydrogen chloride of sucralose | |
| CN103773529B (en) | Pry-mounted associated gas liquefaction system | |
| CN210045092U (en) | Device for preparing hydrogen chloride methanol solution | |
| CN208042611U (en) | Helium and liquefied device are carried from natural gas | |
| CN204469688U (en) | Cooling device of high-temperature ammonia-containing gas sampling system | |
| CN207391013U (en) | The device of carbon dioxide is recycled in dry ice preparation process | |
| CN109084527A (en) | Laughing gas rectification and purification device and laughing gas rectificating method | |
| CN106979665B (en) | Method and equipment for purifying synthetic gas | |
| CN110038459B (en) | Device for preparing hydrogen chloride methanol solution and preparation method thereof | |
| CN107473223A (en) | A kind of CO cryogenic separation system and method using nitrogen cycle | |
| CN103307441B (en) | A kind of expoxy propane storage device and storage technology | |
| CN116409750B (en) | Device and method for separating high-purity hydrogen chloride from byproduct hydrogen chloride of sucralose | |
| CN112473572A (en) | Hydration reaction device | |
| CN202785659U (en) | System for controlling content of nitrogen dioxide | |
| CN106495185B (en) | A kind of waste sulfuric acid from alkylation processing unit and processing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |