Production method for L-cysteine
A cysteine, production method technology, applied in the direction of electrolytic organic production, electrolysis process, electrolysis components, etc., can solve the problems of difficult waste acid treatment, serious environmental pollution, low yield, etc., to achieve pollution-free waste discharge, The production process is simple and the substrate conversion rate is high.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0017] Send L-cystine and finely filtered dilute hydrochloric acid into the chemical reaction kettle with a molar ratio of 1:10, and stir evenly. At this time, the pH of the liquid in the kettle should be 0.9-1.1. The temperature of the liquid was raised to 58°C, adding activated carbon accounting for 15% of the total molar amount of the liquid in the kettle for decolorization, and the decolorization was completed after stirring for 0.55 hours. The liquid in the kettle is sent to a precision filter for filtration, and the filter cake is discharged. The filtrate is sent to an electrolytic cell for electrolysis for 9 hours. After the electrolysis is completed, it is sent to a precision filter for precision filtration, and the filter cake is discharged. Acid solution, at this moment, add the dilute sodium hydroxide aqueous solution of formula quantity to carry out neutralization, adjust the pH of filtrate to be 6.9, obtain neutral L-cysteine solution. Send the neutral L-cystein...
Embodiment 2
[0019] Send L-cystine and finely filtered dilute hydrochloric acid into the chemical reaction kettle with a molar ratio of 1:10, and stir evenly. At this time, the pH of the liquid in the kettle should be 0.9-1.1. The temperature of the liquid was raised to 60°C, adding activated carbon accounting for 15% of the total molar amount of the liquid in the kettle for decolorization, and the decolorization was completed after stirring for 0.50 hours. The liquid in the kettle is sent to a precision filter for filtration, and the filter cake is discharged. The filtrate is sent to an electrolytic cell for electrolysis for 10 hours. After the electrolysis is completed, it is sent to a precision filter for fine filtration, and the filter cake is discharged. In between, a neutral L-cysteine solution was obtained. Send the neutral L-cysteine solution into the reaction kettle for concentration under reduced pressure. After concentrated and crystallized under reduced pressure, it is sent...
Embodiment 3
[0021] Send L-cystine and finely filtered dilute hydrochloric acid into the chemical reaction kettle with a molar ratio of 1:10, and stir evenly. At this time, the pH of the liquid in the kettle should be 0.9-1.1. The temperature of the liquid was raised to 62°C, adding activated carbon accounting for 15% of the total molar amount of the liquid in the kettle for decolorization, and the decolorization was completed after stirring for 0.45 hours. The liquid in the kettle is sent to a precision filter for filtration, and the filter cake is discharged. The filtrate is sent to an electrolytic cell for electrolysis for 11 hours. After the electrolysis is completed, it is sent to a precision filter for precision filtration, and the filter cake is discharged. Acid solution, at this moment, add the dilute sodium hydroxide aqueous solution of formula quantity to carry out neutralization, adjust the pH of filtrate to be 7.1, obtain neutral L-cysteine solution. Send the neutral L-cystei...
PUM
Property | Measurement | Unit |
---|---|---|
melting 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