Comprehensive utilization method of lignocellulose biomass
A lignocellulose and biomass technology, applied in the field of comprehensive utilization of cellulose, hemicellulose and lignin in lignocellulosic biomass, can solve the problem that high activity, high hemicellulose and fiber extraction rate cannot be obtained at the same time. , to achieve the effect of eliminating space obstacles, improving extraction rate and reducing usage
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0059] (1) N-level acid hydrolysis
[0060] In the present embodiment: what adopt is tertiary acid hydrolysis, at first corn cob (mass component composition: moisture 6.12%, cellulose 35.19%, hemicellulose 32.1%, lignin 23.7%, other 2.95%) is smashed, Dust off by washing with water. The first reaction kettle is set as the first level, and the last one is set as the third level, and the newly prepared acid solution is added in the first-level hydrolysis reaction kettle to adjust the concentration of the acid solution discharged from the first-level acid hydrolysis reaction kettle, Then add it into the second-stage acid hydrolysis reactor, adjust the concentration of the acid solution discharged in the second-stage acid hydrolysis reactor, and then add it into the third-stage acid hydrolysis reactor, the third-stage acid hydrolysis reactor The discharged solution is the final pentose sugar solution, and then the acid hydrolysis residue in the first-stage acid hydrolysis reactor...
Embodiment 2
[0077] (1) N-level acid hydrolysis
[0078] Technology and method are with embodiment 1 step (1), and difference is: the time of every grade of acid hydrolysis reaction is 0.5 hour, the concentration of phosphoric acid solution in the first grade acid hydrolysis is 20%, the concentration of phosphoric acid solution in the second grade acid hydrolysis Concentration is 12%, and the concentration of phosphoric acid solution in the tertiary acid hydrolysis is 4%; The weight that finally obtains acid hydrolysis residue is 1.93 * 10 3 Kg (about 65% of water content, the absolute dry content of hemicellulose is 10.07%, the absolute dry content of cellulose is 51.11%, and the absolute dry content of lignin is 34.17%), the quality of pentose solution is 8.06 * 10 3 kg, and the concentration of pentose sugar is 3.38%, the extraction rate of hemicellulose is 80%.
[0079] (2) Extraction of alkali lignin with alkaline solution
[0080] All the acid hydrolysis residues obtained in step (...
Embodiment 3
[0088] (1) N-level acid hydrolysis
[0089] Process and method are the same as embodiment 1 step (1), the difference is that the concentration of the first stage acid hydrolysis phosphoric acid is 10%, the concentration of the second stage acid hydrolysis phosphoric acid is 8%, and the concentration of the third stage acid hydrolysis phosphoric acid is 6%. %, the time for each level of acid hydrolysis is 1.5 hours, and the temperature is 120°C; the weight of the acid hydrolysis residue finally obtained is 2.06×10 3 kg (the water content is about 65%, the absolute dry content of hemicellulose is 14.18%, the absolute dry content of cellulose is 48.84%, and the absolute dry content of lignin is 32.62%), and the final pentose sugar solution is 7.94 × 10 3 kg, and the concentration of pentose sugar is about 3.01%, the extraction rate of hemicellulose is 70%.
[0090] (2) Alkaline solution to extract lignin
[0091] Mix all acid hydrolysis residues obtained in step (1) of this exa...
PUM
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