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 of not being able to obtain high activity, high hemicellulose and cellulose extraction rate at the same time problem, achieve the effect of shortening running time, maintaining activity and improving production efficiency
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0077] (1) N-level acid hydrolysis
[0078] In this embodiment: what adopt is tertiary acid hydrolysis, at first 1.065 * 10 3kg corn cob (mass component composition: moisture 6.12%, cellulose 35.19%, hemicellulose 32.01%, lignin 23.73%, other 2.95%, the same below) is broken, and then the newly prepared acid solution is added to the first stage of hydrolysis In the reactor, the acid solution discharged from the first-stage acid hydrolysis reactor is added to the second-stage hydrolysis reactor, and the acid solution discharged from the second-stage acid hydrolysis reactor is added to the third-stage hydrolysis reactor, and the third-stage reactor The discharged acid solution is the final pentose sugar solution, and the acid hydrolysis residue in the first-stage hydrolysis reactor is taken out, and then new corn cob raw materials are loaded, and the original first-stage hydrolysis reactor is used as the new third The first-level reactor, the original second-level reactor is us...
Embodiment 2
[0097] (1) N-level acid hydrolysis
[0098] Raw material and method are with embodiment 1 step (1), and difference is: the time of first-order hydrolysis reaction is 3 hours, and the time of second-order hydrolysis reaction is 2 hours, and the time of third-order hydrolysis reaction is 1 hour, every The temperature of grade acid hydrolysis is 110 ℃; The weight of acid hydrolysis residue obtained is 1.95×10 3 kg (the water content is about 65%, the absolute dry content of hemicellulose is 11.48%, the absolute dry content of cellulose is 50.57%, and the absolute dry content of lignin is 33.36%), the weight of pentose sugar solution is 8.05 × 10 3 kg, and the concentration of pentose sugar is 3.26%, the extraction rate of hemicellulose is 77%.
[0099] (2) Enzymatic hydrolysis of cellulose
[0100] The conditions of the enzymolysis are: cellulase is commercially available cellulase (Heshibi Biotechnology Co., Ltd., 4w unit), and all the acid hydrolysis residues obtained in step...
Embodiment 3
[0108] (1) N-level acid hydrolysis
[0109] Raw material and method are with embodiment 1 step (1), and difference is that the time of first-order hydrolysis reaction is 1 hour, and the time of second-order hydrolysis reaction is 0.75 hour, and the time of third-order hydrolysis reaction is 0.5 hour, every The concentration of phosphoric acid hydrolyzed by grade acid is 10%; the weight of finally obtained acid hydrolysis residue is 2.02×10 3 kg (the water content is about 65%, the absolute dry content of hemicellulose is 13.51%, the absolute dry content of cellulose is 49.08%, and the absolute dry content of lignin is 32.9%), the weight of pentose sugar solution is 7.98 × 10 3 kg, the concentration of pentose sugar was 3.08%, and the extraction rate of hemicellulose was 72%.
[0110] (2) Enzymatic hydrolysis of cellulose
[0111] All acid hydrolysis residues obtained in step (1) of this example were subjected to enzymatic hydrolysis of cellulose according to the method of st...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More