Method and device for continuous preparation of lithium hexafluorophosphate
A lithium hexafluorophosphate and separation device technology, applied in lithium hexafluorophosphate, chemical instruments and methods, lithium compounds, etc., can solve problems such as high equipment requirements and difficult processes, and achieve large cryogenic loss, eliminate large power consumption, and large particles Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0061] A. Synthetic liquid heating up
[0062] Lithium hexafluorophosphate synthetic liquid (6000L / h, temperature 10°C, concentration 20%) from the liquid pump of the synthetic liquid storage tank enters the crystallizer together with the mother liquor (2000L / h, temperature 30°C, concentration 5%) The inlet of the circulation pump is pressurized to 0.15MPa by the external circulation pump and then enters the steam heater, and the mixed solution is heated to 45°C-50°C and enters the crystallizer (concentration is about 16%).
[0063] B. Stirring cycle inside the crystallizer
[0064] The mixed liquid entering the crystallizer, under the action of the magnetic stirrer, circulates along the circulation channel formed by the guide tube, and controls the negative pressure in the crystallizer to be between -15kPa~-25kPa, and the boiling liquid level is to produce supersaturation Area, with the help of evaporation, becomes a supersaturated solution and contacts the crystals in the c...
Embodiment 2
[0072] The specific process is the same as in Example 1, except for the following differences:
[0073] The feed temperature of the synthetic liquid in A is 5°C; the heating temperature of the synthetic liquid is 55°C;
[0074] The negative pressure in B is -25kPa;
[0075] The temperature of the refrigerant in C is -5°C; the refrigerant is 60wt% ethylene glycol aqueous solution;
[0076] The vacuum degree during condensation is -50kp;
[0077] The pressure at the time of separation in E is -10kPa.
[0078] The resulting high-quality lithium hexafluorophosphate has moisture ≤ 2.8ppm, acid ≤ 59ppm, insoluble matter ≤ 130ppm, and iron ≤ 2.4ppm.
Embodiment 3
[0080] The specific process is the same as in Example 1, except for the following differences:
[0081] The feed temperature of the synthetic liquid in A is 15°C; the heating temperature of the synthetic liquid is 40°C;
[0082] The negative pressure in B is -50kPa;
[0083] The temperature of the refrigerant in C is -20°C; the refrigerant is 15wt% ethylene glycol aqueous solution;
[0084] The vacuum degree during condensation is -40kPa;
[0085] The pressure at the time of separation in E is 0 kPa.
[0086] The resulting high-quality lithium hexafluorophosphate has moisture ≤ 3.4ppm, acid ≤ 65ppm, insoluble matter ≤ 146ppm, and iron ≤ 2ppm.
PUM
Property | Measurement | Unit |
---|---|---|
particle diameter | aaaaa | aaaaa |
boiling point | 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