CN219647448U - Batching system for polyimide film production - Google Patents
Batching system for polyimide film production Download PDFInfo
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- CN219647448U CN219647448U CN202320136297.9U CN202320136297U CN219647448U CN 219647448 U CN219647448 U CN 219647448U CN 202320136297 U CN202320136297 U CN 202320136297U CN 219647448 U CN219647448 U CN 219647448U
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- tank
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- flowmeter
- solvent tank
- branch pipe
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 31
- 229920001721 polyimide Polymers 0.000 title claims abstract description 18
- 239000002904 solvent Substances 0.000 claims abstract description 101
- 238000002156 mixing Methods 0.000 claims abstract description 67
- 238000005496 tempering Methods 0.000 claims abstract description 39
- 238000006243 chemical reaction Methods 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000007599 discharging Methods 0.000 claims abstract description 22
- 230000003068 static effect Effects 0.000 claims abstract description 17
- 239000000843 powder Substances 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 4
- 238000013329 compounding Methods 0.000 claims 2
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 12
- 238000004140 cleaning Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 150000004985 diamines Chemical class 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 1
- VLDPXPPHXDGHEW-UHFFFAOYSA-N 1-chloro-2-dichlorophosphoryloxybenzene Chemical compound ClC1=CC=CC=C1OP(Cl)(Cl)=O VLDPXPPHXDGHEW-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Abstract
The utility model discloses a batching system for polyimide film production, which comprises a reaction kettle, a blending tank, a solvent tank discharging adjusting component, a blending tank discharging adjusting component and a mixing adjusting component; the tempering tank discharging adjusting component comprises a first branch pipe connected with the tempering tank, and the first branch pipe is provided with a tempering tank discharging port stop valve, a tempering tank liquid feeding pump, a tempering tank flowmeter and a tempering tank flowmeter rear stop valve; the solvent tank discharging adjusting component comprises a second branch pipe connected with the solvent tank, and the second branch pipe is provided with a solvent tank discharging port stop valve, a solvent tank liquid feeding pump, a solvent tank flowmeter and a solvent tank flowmeter rear stop valve; the mixing adjusting component comprises a feeding main pipe connected with the reaction kettle, the feeding main pipe is provided with a static mixer and a main pipe stop valve, and the first branch pipe and the second branch pipe are both communicated with the feeding main pipe and are summarized before the static mixer. The utility model can realize the free regulation and control of the concentration of the batching solution according to the production process requirement.
Description
Technical Field
The utility model belongs to the technical field of polyimide film production, and particularly relates to a batching system for polyimide film production.
Background
In the existing industry, such as a polyimide film production system, the resin viscosity needs to be regulated and controlled in the polyamide acid resin synthesis in the previous working procedure, and the currently commonly adopted viscosity regulating mode is two modes of powder viscosity regulating (namely, powder is manually added into a reaction kettle) and solution viscosity regulating (namely, the powder is firstly dissolved in a solvent in a blending tank and then is pumped into the reaction kettle through a pump), and the powder is generally dianhydride or diamine. The viscosity of the solution is regulated by determining the concentration of the powder preparation before production, and the solution is used after the corresponding powder and the solvent are proportionally added and fully mixed to form the batching solution. In the production process, dosing solutions with different concentrations are often required, and a mode of setting up different blending tanks to store the dosing solutions with different concentrations is generally adopted, but the following problems exist in the mode:
(1) The concentration of the prepared dosing solution is fixed before production, if process demand variation occurs in the production process or process adjustment is required, the prepared dosing solution can be discharged at the moment under the condition that the concentration is not in accordance with the requirement, and the dosing solution with the required concentration is prepared again, so that raw materials are wasted easily;
(2) The mode often needs to be provided with a plurality of blending grooves, generally more than 3 blending grooves, and has large engineering quantity and high cost;
(3) The diamine batching solution has a large defect in the mode, because the diamine powder is easy to oxidize, the common storage period is shorter and is mostly 2-3 days, if the production is stopped, the batching solution needs to be reserved in the blending tank and the pipeline for a long time, and the blending tank and the pipeline need to be cleaned by using a solvent during the production again, so that the mode of the multi-blending tank is easy to cause overlong cleaning time and great waste of the solvent.
The present utility model has been made to solve the above-mentioned problems occurring in the prior art.
Disclosure of Invention
Aiming at the technical problems, the utility model provides a batching system for polyimide film production, which can realize the free regulation and control of batching solution concentration according to the production process requirement, can realize the switching of batching solutions with different concentrations without a plurality of blending tanks, and can be used for cleaning only one blending tank and corresponding pipelines after diamine batching solution is stored for a long time.
The technical scheme of the utility model is as follows:
the batching system for producing the polyimide film comprises a reaction kettle and a blending tank, wherein the blending tank is connected with the reaction kettle in a one-way, a solution in the blending tank flows to the reaction kettle through the blending tank, and the batching system also comprises a solvent tank, a solvent tank discharging adjusting component, a blending tank discharging adjusting component and a mixing adjusting component, wherein the solvent tank is connected with the reaction kettle in a one-way, and a solvent in the solvent tank flows to the reaction kettle through the solvent tank;
the tempering tank discharging adjusting assembly comprises a first branch pipe connected with the tempering tank, and the first branch pipe is provided with a tempering tank discharging port stop valve, a tempering tank liquid feeding pump, a tempering tank flowmeter and a tempering tank flowmeter rear stop valve;
the solvent tank discharging adjusting assembly comprises a second branch pipe connected with the solvent tank, and the second branch pipe is provided with a solvent tank discharging port stop valve, a solvent tank liquid feeding pump, a solvent tank flowmeter and a solvent tank flowmeter rear stop valve;
the mixing adjusting assembly comprises a feeding main pipe, an outlet of the feeding main pipe is connected with the reaction kettle, the feeding main pipe is provided with a static mixer and a main pipe stop valve, the first branch pipe and the second branch pipe are communicated with the feeding main pipe, and the first branch pipe and the second branch pipe are summarized before the static mixer.
Preferably, the tempering tank liquid-feeding pump and the solvent tank liquid-feeding pump are both diaphragm pumps, and the tempering tank liquid-feeding pump and the solvent tank liquid-feeding pump are located at the same height.
Preferably, the middle part of the reaction kettle is provided with a batching solution feed inlet, the feed main pipe is connected with the batching solution feed inlet, and a check valve is arranged near the feed main pipe at the batching solution feed inlet to prevent resin backflow.
Preferably, the top of the blending tank is provided with a powder feeding port; and a stirring device is arranged in the blending tank.
Preferably, the static mixer is an SV type static mixer.
Preferably, the blending tank discharge outlet stop valve, the blending tank flowmeter rear stop valve, the solvent tank discharge outlet stop valve and the solvent tank flowmeter rear stop valve are normally closed electromagnetic valves; the blending tank flowmeter and the solvent tank flowmeter are both electromagnetic flowmeters, and the precision grade is 0.5 grade.
Preferably, the device further comprises a control system, wherein the tempering tank discharge outlet stop valve, the tempering tank liquid delivery pump, the tempering tank flowmeter rear stop valve, the solvent tank discharge outlet stop valve, the solvent tank liquid delivery pump, the solvent tank flowmeter and the solvent tank flowmeter rear stop valve are electrically connected with the control system.
Preferably, the control system is a DCS system
The beneficial effects of the utility model are as follows:
(1) According to the utility model, the proportioning system can realize the free regulation and control of the concentration of the proportioning solution by the proportion adjustment of the proportioning solution and the solvent according to the production process requirement, and the switching of the proportioning solution with different concentrations can be realized without a plurality of blending tanks;
(2) After the diamine batching solution is stored for a long time, only one blending tank and corresponding pipelines are required to be cleaned, so that a large amount of cleaning time and solvent can be saved; the more the concentration types of the batching solution are required in production, the more the quantity of the blending tanks can be saved, the more the cleaning time is shortened, and the more the quantity of the saved solution is;
(3) The utility model adopts the static mixer to ensure that the batching solution and the solvent are fully mixed and then added into the reaction kettle, thereby avoiding the problem of uneven concentration caused by adding the solution.
Drawings
The utility model is further described below with reference to the accompanying drawings and examples:
fig. 1 is a schematic diagram of the configuration of the dosing system in embodiment 1.
Marked in the figure as: 1-a reaction kettle; 2-a blending tank; 3-a solvent tank; 4-check valve; 5-a main pipe stop valve; 6-a static mixer; 7-a discharge port stop valve of the blending tank; 8-a liquid feeding pump of the blending tank; 9-a harmonizing tank flowmeter; 10-a back stop valve of the blending tank flowmeter; 11-a stop valve of a discharge port of the solvent tank; 12-a solvent tank liquid feeding pump; 13-solvent tank flowmeter; 14-a solvent tank flowmeter rear shutoff valve; 15-a powder feeding hole; 16-control system.
Detailed Description
The objects, technical solutions and advantages of the present utility model will become more apparent by the following detailed description of the present utility model with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the utility model. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present utility model.
Example 1
As shown in fig. 1, a batching system for polyimide film production comprises a reaction kettle 1, a blending tank 2, a solvent tank 3, a solvent tank discharging adjusting component, a blending tank discharging adjusting component and a mixing adjusting component.
One reaction kettle 1, a blending tank 2 and a solvent tank 3, wherein the blending tank 2 is connected with the reaction kettle 1 in a one-way, the solution in the blending tank 2 flows to the reaction kettle 1 through the blending tank 2, the solvent tank 3 is connected with the reaction kettle 1 in a one-way, and the solvent in the solvent tank 3 flows to the reaction kettle 1 through the solvent tank 3.
The tempering tank discharging adjusting component comprises a first branch pipe connected with the tempering tank 2, and a tempering tank discharging port stop valve 7, a tempering tank liquid feeding pump 8, a tempering tank flowmeter 9 and a tempering tank flowmeter rear stop valve 10 are sequentially arranged on the first branch pipe along the flowing direction of liquid in the first branch pipe. The solvent tank discharging adjusting component comprises a second branch pipe connected with the solvent tank 3, and a solvent tank discharging port stop valve 11, a solvent tank liquid feeding pump 12, a solvent tank flowmeter 13 and a solvent tank flowmeter rear stop valve 14 are sequentially arranged on the second branch pipe along the flow direction of liquid in the second branch pipe. The mixing adjusting component comprises a feeding main pipe, an outlet of the feeding main pipe is connected with the reaction kettle 1, the feeding main pipe is provided with an SV type static mixer 6 and a main pipe stop valve 5, the first branch pipe and the second branch pipe are communicated with the feeding main pipe, the first branch pipe and the second branch pipe are summarized before the static mixer 6, the feeding main pipe is connected with a batching solution feed inlet in the middle of the reaction kettle 1, and a check valve 4 is arranged near the feeding main pipe at the batching solution feed inlet and used for preventing resin backflow.
The blending tank discharge port stop valve 7, the blending tank flowmeter rear stop valve 10, the solvent tank discharge port stop valve 11 and the solvent tank flowmeter rear stop valve 14 are normally closed electromagnetic valves; the blending tank flowmeter 9 and the solvent tank flowmeter 13 are both electromagnetic flowmeters, and the precision level is 0.5 level. The control system 16 is a DCS system, and the reconciliation tank discharge port stop valve 7, the reconciliation tank liquid feed pump 8, the reconciliation tank flowmeter 9, the reconciliation tank flowmeter rear stop valve 10, the solvent tank discharge port stop valve 11, the solvent tank liquid feed pump 12, the solvent tank flowmeter 13 and the solvent tank flowmeter rear stop valve 14 are all electrically connected with the control system 16.
The top of the blending tank 2 is provided with a powder feeding hole 15 and a stirring device, wherein the powder feeding hole is a powder feeding hole, powder is generally added by mechanical automatic addition or manual feeding, the stirring device can select a blade type or a spiral type according to specific requirements, and the material is a corrosion-resistant material, such as 304L or 316L stainless steel. After the batching solution is prepared in the blending tank 2, the blending tank discharge port stop valve 7, the blending tank liquid feeding pump 8, the blending tank flowmeter rear stop valve 10 and the main pipe stop valve 5 are sequentially opened, so that the batching solution in the blending tank 2 can be conveyed into the reaction kettle 1. The solvent tank 3 is used for production, the components of the solvent are the same as those of the solvent used for the batching solution, and the solvent in the solvent tank 3 can be conveyed into the reaction kettle 1 by sequentially opening the stop valve 11 of the discharge port of the solvent tank, the liquid feeding pump 12 of the solvent tank, the rear stop valve 14 of the flowmeter of the solvent tank and the main pipe stop valve 5. The tempering tank liquid-feeding pump 8 and the solvent tank liquid-feeding pump 12 are both diaphragm pumps, and the tempering tank liquid-feeding pump 8 and the solvent tank liquid-feeding pump 12 are positioned at the same height.
The batching solution conveying speed is controlled and recorded by the blending tank flowmeter 9, the solvent conveying speed is controlled and recorded by the solvent tank flowmeter 13, the flowmeter control data is transmitted to the DCS system through an electric signal, an operator can monitor in real time, meanwhile, the operator can input signals on the DCS system according to production requirements, and the signals are fed back to the blending tank flowmeter 9 and the solvent tank flowmeter 13 to adjust the batching solution conveying speed and the solvent conveying speed.
During production, the required batching solution with higher concentration is prepared in the blending tank 2, when the concentration of the used blending solution is required to be changed, the batching solution with the required concentration can be obtained by only opening the cut-off valve 11 of the discharge port of the solvent tank, the liquid feeding pump 12 of the solvent tank and the rear cut-off valve 14 of the flowmeter of the solvent tank, inputting corresponding proportion parameters through a DCS system and feeding back the corresponding proportion parameters to the blending tank flowmeter 9 and the flowmeter 13 of the solvent tank, regulating corresponding flow, and fully mixing the two solutions in the static mixer 6.
Example 2
The application was based on the dosing system of example 1, as follows:
1000kg of batching solution is prepared in a 1000L blending tank, the components of the batching solution are 800kg of N, N-dimethylformamide and 200kg of p-phenylenediamine, the concentration of the batching solution is 20%,1000 kg of N, N-dimethylformamide is filled in a 1000L solvent tank, the concentration of the solution used for viscosity adjustment is 20% during production, the conveying speed is 2kg/min, the concentration of the batching solution is unsuitable for continuous addition along with the increase of the adding amount, the concentration of the batching solution is required to be diluted to 5%, the feeding speed is maintained to 2kg/min, at the moment, a DCS system is used for inputting signals, the conveying speed of the batching solution is reduced to 0.5kg/min through a flowmeter, and the solvent speed is set to 1.5kg/min. The batching solution and the solvent are fully mixed through a static mixer and enter a reaction kettle. Through the batching system designed by the utility model, the switching between the batching solution with the concentration of 20% and the batching solution with the concentration of 5% can be realized, and meanwhile, the cleaning work of a 5% concentration blending tank and corresponding pipelines is saved.
Example 3
The application was based on the dosing system of example 1, as follows:
1000kg of batching solution is prepared in a 1000L blending tank, the components of the batching solution are 800kg of N, N-dimethylformamide and 100kg of pyromellitic dianhydride respectively, the concentration of the batching solution is 10%,1000 kg of N, N-dimethylformamide is filled in a 1000L solvent tank, the process is required to be debugged during production, the concentration of the batching solution is required to be reduced to 7.2%, meanwhile, the feeding speed is maintained to be 3kg/min, at the moment, a DCS system inputs signals, the batching solution is set to be 2.16kg/min through a flowmeter, and the solvent speed is set to be 0.84kg/min. The batching solution and the solvent are fully mixed through a static mixer and enter a reaction kettle. The batching system designed by the utility model can meet the process requirements of different concentrations during process debugging, and avoid the waste of 1000kg batching solution.
The utility model provides a batching system for polyimide film production, which can realize the free regulation and control of batching solution concentration by the proportion adjustment of batching solution and solvent according to the production process requirement, can realize the switching of batching solutions with different concentrations without a plurality of blending tanks, and can save a large amount of cleaning time and solvent by cleaning only one blending tank and corresponding pipeline after the diamine batching solution is stored for a long time. The more the concentration types of the batching solution are required in the production, the more the quantity of the blending tanks can be saved, the more the cleaning time is shortened, and the more the quantity of the saved solution is.
It is to be understood that the above-described embodiments of the present utility model are merely illustrative of or explanation of the principles of the present utility model and are in no way limiting of the utility model. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present utility model should be included in the scope of the present utility model. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (8)
1. The batching system for producing the polyimide film comprises a reaction kettle and a blending tank, wherein the blending tank is connected with the reaction kettle in a one-way, and a solution in the blending tank flows to the reaction kettle through the blending tank;
the tempering tank discharging adjusting assembly comprises a first branch pipe connected with the tempering tank, and the first branch pipe is provided with a tempering tank discharging port stop valve, a tempering tank liquid feeding pump, a tempering tank flowmeter and a tempering tank flowmeter rear stop valve;
the solvent tank discharging adjusting assembly comprises a second branch pipe connected with the solvent tank, and the second branch pipe is provided with a solvent tank discharging port stop valve, a solvent tank liquid feeding pump, a solvent tank flowmeter and a solvent tank flowmeter rear stop valve;
the mixing adjusting assembly comprises a feeding main pipe, an outlet of the feeding main pipe is connected with the reaction kettle, the feeding main pipe is provided with a static mixer and a main pipe stop valve, the first branch pipe and the second branch pipe are communicated with the feeding main pipe, and the first branch pipe and the second branch pipe are summarized before the static mixer.
2. The dispensing system for polyimide film production of claim 1, wherein the tempering tank liquid feed pump and the solvent tank liquid feed pump are both diaphragm pumps, and the tempering tank liquid feed pump and the solvent tank liquid feed pump are located at the same height.
3. The batching system for producing polyimide films according to claim 1, wherein a batching solution feed inlet is provided in the middle of the reaction kettle, the feed main pipe is connected to the batching solution feed inlet, and a check valve is provided in the feed main pipe near the batching solution feed inlet.
4. The batching system for producing polyimide film according to claim 1, wherein the tempering tank is provided with a powder feed inlet; and a stirring device is arranged in the blending tank.
5. The compounding system for polyimide film production of claim 1, wherein the static mixer is an SV-type static mixer.
6. The batching system for polyimide film production according to claim 1, wherein the tempering tank outlet shutoff valve, the tempering tank flowmeter rear shutoff valve, the solvent tank outlet shutoff valve and the solvent tank flowmeter rear shutoff valve are all normally closed solenoid valves; the harmonizing groove flowmeter and the solvent groove flowmeter are both electromagnetic flowmeters.
7. The dispensing system for polyimide film production of claim 6, further comprising a control system, wherein the tempering tank outlet shutoff valve, the tempering tank liquid feed pump, the tempering tank flow meter rear shutoff valve, the solvent tank outlet shutoff valve, the solvent tank liquid feed pump, the solvent tank flow meter, and the solvent tank flow meter rear shutoff valve are electrically connected with the control system.
8. The compounding system for polyimide film production of claim 7, wherein the control system is a DCS system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320136297.9U CN219647448U (en) | 2023-01-30 | 2023-01-30 | Batching system for polyimide film production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320136297.9U CN219647448U (en) | 2023-01-30 | 2023-01-30 | Batching system for polyimide film production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219647448U true CN219647448U (en) | 2023-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320136297.9U Active CN219647448U (en) | 2023-01-30 | 2023-01-30 | Batching system for polyimide film production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219647448U (en) |
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2023
- 2023-01-30 CN CN202320136297.9U patent/CN219647448U/en active Active
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