Method and device for preparing high-purity fluorine gas or high-purity fluorine-containing mixed gas
A mixed gas and high-purity technology, which is applied in the direction of combined devices, separation methods, fluorine/hydrogen fluoride, etc., can solve the problems that cannot meet the requirements of fine chemical industry and high-end electronics industry, low purity of fluorine gas, and great difference between high-purity fluorine gas and other problems , to achieve good economic value, improve the purity, and expand the effect of the application market
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0041] The device for preparing high-purity fluorine gas or high-purity fluorine-containing mixed gas in this embodiment, such as figure 1As shown, it includes an electrolysis device and a primary filter 5 connected in series, a primary condenser 6 with a condensation temperature of -60 to -100°C, and a secondary condenser 7 with a condensation temperature of -120 to -180°C; In the flow direction, the upstream of the primary filter 5 is connected with a gas booster device 4, which is used to mix the fluorine gas prepared by electrolysis or the fluorine gas prepared by electrolysis in the upstream. Gas pressurization; the refrigerant used in the primary condenser 6 and secondary condenser 7 is liquid nitrogen; the bottom of the primary condenser 6 is connected with a liquid collection device 13 for collecting condensed liquid HF;
[0042] After the gas pressurization device 4 (before the primary filter 5), a gas flow meter is installed to adjust the gas flow;
[0043] The elec...
Embodiment 2
[0049] The method for preparing high-purity fluorine gas in this embodiment adopts the device described in Embodiment 1, specifically:
[0050] Pressurize 1500g of purified fluorine gas produced by medium-temperature electrolysis KF·2HF to a pressure of 0.15MPa, and adjust the flow rate to 0.2m 3 / min, after being filtered through a primary filter with a pore size of 5 μm, the primary condensation and secondary condensation are performed in sequence; the temperature of the primary condensation is controlled at -75°C, and the temperature of the secondary condensation is controlled at -140°C ;
[0051] After the secondary condensed gas is purified, it is filtered through a secondary filter with a pore size of 0.2 μm, and then enters the finished product storage tank, which is high-purity fluorine gas.
[0052] 300 g of gas samples in the storage tank of the finished product are tested by a gas chromatograph, and the purity of the obtained high-purity fluorine gas is 99.9%.
Embodiment 3
[0054] The method for preparing high-purity fluorine-containing mixed gas (fluorine-nitrogen mixed gas) in this embodiment adopts the device described in Example 1, specifically:
[0055] Prepare 2000g of fluorine-nitrogen mixed gas (in the fluorine-nitrogen mixed gas, the mass percentage of fluorine gas is 20%) from the purified fluorine gas produced by medium-temperature electrolysis KF·2HF, pressurize to a pressure of 0.20MPa, and adjust the flow rate to 0.4m 3 / min, after being filtered through a primary filter with a pore size of 10 μm, the primary condensation and secondary condensation are performed in sequence; the temperature of the primary condensation is controlled at -80°C, and the temperature of the secondary condensation is controlled at -130°C ;
[0056] After the secondary condensed gas is purified, it is filtered through a secondary filter with a pore size of 1.0 μm, and then enters the finished product storage tank, which is a high-purity fluorine-nitrogen m...
PUM
Property | Measurement | Unit |
---|---|---|
Particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com