CN219983931U - Electronic grade potassium hydroxide production system - Google Patents
Electronic grade potassium hydroxide production system Download PDFInfo
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- CN219983931U CN219983931U CN202321416178.5U CN202321416178U CN219983931U CN 219983931 U CN219983931 U CN 219983931U CN 202321416178 U CN202321416178 U CN 202321416178U CN 219983931 U CN219983931 U CN 219983931U
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- Prior art keywords
- preheating
- raw material
- potassium hydroxide
- heating
- communicated
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- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 title claims abstract description 79
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 65
- 238000010438 heat treatment Methods 0.000 claims abstract description 41
- 238000001704 evaporation Methods 0.000 claims abstract description 15
- 230000008020 evaporation Effects 0.000 claims abstract description 15
- -1 polytetrafluoroethylene Polymers 0.000 claims description 14
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 14
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract 1
- 239000000047 product Substances 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000005070 sampling Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 229910021645 metal ion Inorganic materials 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 230000008016 vaporization Effects 0.000 description 4
- 239000011552 falling film Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009834 vaporization Methods 0.000 description 3
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Landscapes
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model relates to the technical field of potassium hydroxide production, and provides an electronic-grade potassium hydroxide production system which comprises a raw material storage system, a preheating system, a heating system and a concentration system which are connected in sequence; the raw material storage system comprises a raw material storage device for storing raw materials and a raw material pump for conveying the raw materials; the preheating system comprises a preheating device for preheating raw materials, and the preheating device is communicated with the raw material pump and the raw material storage device through a conveying pipeline; the heating system comprises a heating device for heating the solution, and the heating device is communicated with the preheating device through a conveying pipeline; the concentrating system comprises a flash evaporation device for concentrating raw materials, and a feed inlet of the flash evaporation device is communicated with the heating device through a first conveying pipe; the discharge port of the flash evaporation device is communicated with a finished product storage tank through a third conveying pipe; the steam outlet of the flash evaporation device is communicated with the preheating device through the second conveying pipe, so that the heating and condensing effect of raw materials is improved, the energy consumption is reduced, and greater economic benefits are brought to enterprises.
Description
Technical Field
The utility model relates to the technical field of potassium hydroxide production, in particular to an electronic-grade potassium hydroxide production system.
Background
The electronic information manufacturing industry (electronic industry) is an industry that develops and produces electronic devices and various electronic components, devices, instruments, and meters. Is a military and civil combined industry. The system consists of production industries such as broadcast television equipment, communication navigation equipment, radar equipment, electronic computers, electronic components, electronic instruments and meters, other electronic special equipment and the like. The electronic information industry has evolved based on the development and application of electronic science and technology. The development of the electronic information industry has been a more or less new generation of integrated circuits every three years due to improvements in production technology and improvements in processing technology; the advent of mass production and use of large-scale integrated circuits and computers, fiber optic communications, digital communications, satellite communications technology, has made the electronics industry a rapidly growing high technology industry.
With the rise of the domestic electronic industry, the demands for high-purity chemicals are increasing, and the demands for purity are also increasing. The 48% -50% potassium hydroxide solution is the main raw material of the compound liquid such as the stripping liquid, the developer and the like in the photovoltaic, panel and semiconductor, the requirement on the heavy metal content is more and more strict, and the content is different from 1ppb to 100 ppb.
At present, the potassium hydroxide solution at home and abroad is mainly obtained by electrolyzing the potassium chloride solution through an electrolyzer, but the concentration of the potassium hydroxide solution obtained through electrolysis is usually only about 30 percent. In order to obtain higher concentration potassium hydroxide solutions, it is often necessary to concentrate the low concentration potassium hydroxide solution using a falling film evaporator. The falling film evaporator generally uses high-temperature steam as a heat source when in use, so that the energy consumption is high; meanwhile, as the falling film evaporator is generally made of metal materials such as stainless steel, a large amount of metal ions can be brought in the concentration process, and the obtained potassium hydroxide solution cannot meet the requirements of the electronic industry.
Therefore, there is a need to develop a production system for high-concentration potassium hydroxide solutions that can meet the low energy consumption requirements, while also meeting the heavy metal content requirements of the electronics industry.
Disclosure of Invention
The utility model aims to provide an electronic-grade potassium hydroxide production system which can meet the requirement of low energy consumption.
The embodiment of the utility model is realized by the following technical scheme:
an electronic-grade potassium hydroxide production system comprises a raw material storage system, a preheating system, a heating system and a concentration system which are connected in sequence;
the raw material storage system comprises a raw material storage device for storing raw materials and a raw material pump for conveying the raw materials;
the preheating system comprises a preheating device for preheating raw materials, and the preheating device is communicated with the raw material pump and the raw material storage device through a conveying pipeline;
the heating system comprises a heating device for heating the solution, and the heating device is communicated with the preheating device through a conveying pipeline;
the concentrating system comprises a flash evaporation device for concentrating raw materials, and a feed inlet of the flash evaporation device is communicated with the heating device through a first conveying pipe; the discharge port of the flash evaporation device is communicated with a finished product storage tank through a third conveying pipe;
the steam outlet of the flash evaporation device is communicated with the preheating device through a second conveying pipe.
Further, polytetrafluoroethylene layers are attached to the inner wall of the raw material storage device, the inner wall of the preheating device, the inner wall of the heating device and the inner wall of the flash evaporation device.
Further, the polytetrafluoroethylene layer has a thickness of 6 to 8mm.
Further, the device also comprises a condensing device which is communicated with the preheating device.
Further, the heating device is provided with a plurality of microwave heating devices.
Further, a material taking valve, a finished product pump and a check valve are further arranged on the third conveying pipe.
Further, a first branch pipeline is further arranged on the third conveying pipe, a finished product valve is arranged on the first branch pipeline, and the finished product storage tank is communicated with the first branch pipeline.
Further, a second branch pipeline is further arranged on the third conveying pipe, a circulating valve is arranged on the second branch pipeline, and the second branch pipeline is communicated with a feed inlet of the heating device.
Further, the preheating device is also provided with a vacuum pump communicated with the preheating device.
Further, the conveying pipeline, the first conveying pipe, the second conveying pipe and the third conveying pipe are made of steel lining polytetrafluoroethylene materials.
The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:
1. the utility model has reasonable design and simple structure, the raw materials are preheated in the preheater by the secondary steam from the flash tank and then enter the heater for heating, the heated solution enters the flash tank for partial vaporization and concentration, the secondary steam generated in the flash tank is utilized for preheating the raw materials, the energy consumption of the device is reduced, the reutilization of resources is realized, the resources are greatly saved, and greater economic benefit is brought to enterprises.
2. According to the utility model, by arranging the polytetrafluoroethylene layers in each device in the system, no metal ions are separated out in the concentration process, and the produced potassium hydroxide solution has low metal ion content, so that the electronic industry requirement can be met.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of an electronic grade potassium hydroxide production system provided in an embodiment of the present utility model;
icon: 100-raw material storage system, 11-raw material tank, 12-raw material pump, 200-preheating system, 21-preheater, 22-vacuum pump, 300-heating system, 31-heater, 32-microwave heating device, 33-first conveying pipe, 34-second conveying pipe, 35-third conveying pipe, 351-first branch pipeline, 352-second branch pipeline, 400-concentrating system, 41-flash tank, 42-finished product pump, 500-condensing device, 51-manometer, 52-check valve, 53-discharge valve, 54-pressure sensor, 55-relief valve, 56-temperature sensor, 57-sampling valve, 58-finished product valve, 59-circulating valve.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Example 1
Referring to fig. 1, the present utility model provides an electronic grade potassium hydroxide production apparatus, in this embodiment: the raw material storage device is the raw material tank 11, the preheating device is the preheater 21, the heating device is the heater 31, and the flash evaporation device is the flash tank 41.
Specifically, the electronic-grade potassium hydroxide production device provided in this embodiment includes a raw material storage system 100, a preheating system 200, a heating system 300, and a concentration system 400, which are sequentially connected;
the raw material storage system 100 includes a raw material tank 11 for storing raw materials and a raw material pump 12 for transporting raw materials; the preheating system 200 comprises a preheater 21 for preheating raw materials, and the preheater 21 is communicated with the raw material pump 12 and the raw material storage device 11 through a conveying pipeline; the heating system 300 includes a heater 31 for heating the solution, the heater 31 being in communication with the preheater 21 through a transfer line; the concentrating system 400 includes a flash tank 41 for concentrating the raw material, the flash tank 41 being in communication with the heater 31 through the first transfer pipe 33; the flash tank 41 is used for vaporizing and concentrating the raw material to a prescribed concentration and then sending the raw material to a finished product storage tank; the flash tank 41 communicates with the preheater 21 through a second transfer line 34.
The use of the device is illustrated by the combination of the utility model, using 30% potassium hydroxide solution as the raw material:
1. switching on a power supply and opening each discharging valve;
2. setting the proper heating temperature and vacuum, opening the final pump 42, the circulation valve 59 on the second bypass 352, the microwave heating unit 32 and the vacuum pump 22;
3. the raw materials are heated by the raw material tank 11 through the preheater 21 and the heater 31 in sequence and then enter the flash tank 41 for partial vaporization concentration;
4. the secondary steam generated in the flash tank 41 enters the preheater 21 through the second delivery pipe 34 as a heat source for raw material preheating, and the formed condensed water enters the condensing device 500 (condensed water tank) for collection.
5. Opening the discharge valve 53 and the sampling valve 57 on the third delivery pipe 35, sampling and analyzing, and if the concentration reaches the specified concentration, delivering the concentrated solution to a finished product storage tank through the first branch pipeline 351 by the finished product pump 42; if the concentration of the concentrated solution is not reached, the concentrated solution returns to the heater 31 through the second branch pipe 352 to continue the concentration.
Preferably, the utility model relates to a polytetrafluoroethylene coating with 6-8 mm attached to the inner walls of all devices, all devices are connected through a steel lining polytetrafluoroethylene tube, the production system of the utility model uses a steel lining polytetrafluoroethylene material, no metal ions are separated out in the concentration process, and the produced potassium hydroxide solution has low metal ion content and can meet the requirements of the electronic industry.
Specifically, when in use: the raw material in the raw material tank 11 is sent to the preheater 21 for preheating by the raw material pump 12, a liquid level gauge is arranged on the raw material tank 11 and used for observing the liquid level in the raw material tank 11 so as to supplement the solution into the raw material tank 11 in time, a heat exchange tube prepared by polytetrafluoroethylene is arranged in the preheater 21, a pressure gauge 51, a check valve 52 and a discharge valve 53 are arranged on a connecting tube between the raw material pump 12 and the preheater 21, and the preheated heat source is secondary steam from the flash tank 41 conveyed by the second conveying tube 34. The preheated solution enters a heater 31 for heating, a heat exchange tube prepared by polytetrafluoroethylene is arranged in the heater 31, a microwave heating device 32, a pressure gauge 51 and a temperature sensor 56 are arranged on the heater 31, the microwave heating device 32 solves the problem that the polytetrafluoroethylene material in the conventional heating mode is poor in heat transfer, and potassium hydroxide solution with the concentration of more than 48% can be obtained under lower energy consumption; the temperature sensor 56 adjusts the switching of the microwave heating unit 32 according to the temperature change of the solution in the heat exchange tube. The heated solution enters the flash tank 41 through the first conveying pipe 33 to be partially vaporized and concentrated, if the concentration reaches the specified concentration, the concentrated solution is conveyed to a finished product storage tank through a first branch pipeline 351 by a finished product pump 42, a finished product valve 58 is arranged on the first branch pipeline 351, if the concentration does not reach the specified concentration, the concentrated solution returns to the heater 31 through a second branch pipeline 352 to be continuously concentrated, and a circulating valve 59 is arranged on the second branch pipeline 352. A thermometer, a discharge valve 53 and a sampling valve 57 are provided on the connecting pipe between the flash tank 41 and the product pump 42, and the sampling valve 57 is used for sampling and analyzing the concentration of the potassium hydroxide solution from the flash tank 41. A pressure gauge 51 and a check valve 52 are provided in the connecting pipe between the product pump 42 and the heater 31.
The secondary steam generated by vaporization enters the preheater 21 through the second conveying pipe 34 to preheat the raw material, and the formed condensed water enters the condensing device 500 (condensing water tank) to be collected. The vacuum pump 22 is used for maintaining the vacuum degree in the flash tank 41 and the condensed water tank, reducing the concentration temperature, so that the solution can be vaporized and concentrated at a lower temperature, and reducing the safety operation risk of the device; the connection between the preheater 21 and the vacuum pump 22 is provided with a pressure sensor which adjusts the rotational speed of the vacuum pump 22 in accordance with the pressure in the pipe, a relief valve 55 and a check valve 52, the check valve 52 being used to prevent air from entering the condenser to contaminate the product. The condensed water tank and the preheater 21 form circulation through a steel lined polytetrafluoroethylene tube, so that the vacuum degree of the condensed water tank is maintained, and the condensed water can enter the condensed water tank from the preheater 21.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. An electronic grade potassium hydroxide production system is characterized by comprising a raw material storage system, a preheating system, a heating system and a concentration system which are connected in sequence;
the raw material storage system comprises a raw material storage device for storing raw materials and a raw material pump for conveying the raw materials;
the preheating system comprises a preheating device for preheating raw materials, and the preheating device is communicated with the raw material pump and the raw material storage device through a conveying pipeline;
the heating system comprises a heating device for heating the solution, and the heating device is communicated with the preheating device through a conveying pipeline;
the concentrating system comprises a flash evaporation device for concentrating raw materials, and a feed inlet of the flash evaporation device is communicated with the heating device through a first conveying pipe; the discharge port of the flash evaporation device is communicated with a finished product storage tank through a third conveying pipe;
the steam outlet of the flash evaporation device is communicated with the preheating device through a second conveying pipe.
2. The electronic grade potassium hydroxide production system of claim 1, wherein the inner wall of the raw material storage means, the inner wall of the preheating means, the inner wall of the heating means, and the inner wall of the flash evaporation means are each attached with a polytetrafluoroethylene layer.
3. The electronic grade potassium hydroxide production system of claim 2, wherein the polytetrafluoroethylene layer has a thickness of 6 to 8mm.
4. The electronic grade potassium hydroxide production system of claim 1, further comprising a condensing device in communication with the preheating device.
5. The electronic grade potassium hydroxide production system of claim 1, wherein the heating means is provided with a plurality of microwave heating means.
6. The electronic grade potassium hydroxide production system of claim 1, wherein the third delivery tube is further provided with a take-off valve, a product pump, and a check valve.
7. The electronic grade potassium hydroxide production system of claim 1, wherein the third delivery tube is further provided with a first bypass conduit, the first bypass conduit is provided with a product valve, and the product reservoir is in communication with the first bypass conduit.
8. The electronic grade potassium hydroxide production system of claim 1, wherein a second branch pipeline is further arranged on the third conveying pipe, a circulating valve is arranged on the second branch pipeline, and the second branch pipeline is communicated with the feed inlet of the heating device.
9. The electronic grade potassium hydroxide production system of claim 1, wherein the preheating device is further provided with a vacuum pump in communication.
10. The electronic grade potassium hydroxide production system of any one of claims 1-9, wherein the delivery tube, the first delivery tube, the second delivery tube, and the third delivery tube are all steel lined polytetrafluoroethylene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321416178.5U CN219983931U (en) | 2023-06-05 | 2023-06-05 | Electronic grade potassium hydroxide production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321416178.5U CN219983931U (en) | 2023-06-05 | 2023-06-05 | Electronic grade potassium hydroxide production system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219983931U true CN219983931U (en) | 2023-11-10 |
Family
ID=88619131
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321416178.5U Active CN219983931U (en) | 2023-06-05 | 2023-06-05 | Electronic grade potassium hydroxide production system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219983931U (en) |
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2023
- 2023-06-05 CN CN202321416178.5U patent/CN219983931U/en active Active
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