Method for hydrolyzing lignocellulose

A lignocellulose, mass ratio technology, applied in the new field of hydrolyzed lignocellulose, can solve the problems of inability to recycle, high energy consumption, long reaction time, etc., and achieves strong tolerance, high hydrolysis efficiency, and high mechanical strength. Effect

Inactive Publication Date: 2010-02-03
XISHUANGBANNA TROPICAL BOTANICAL GARDEN CHINESE ACAD OF SCI
1 Cites 35 Cited by

AI-Extracted Technical Summary

Problems solved by technology

This process NaOH cannot be recycled, the reactio...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Abstract

The invention discloses a method for hydrolyzing lignocellulose. Lignocellulose is pulverized into particles, and the particles are mixed with water to form even seriflux; the seriflux is preheated to60-150 DEG C by using ultrasonic waves or microwaves; the preheated even seriflux is quickly heated to 120-300 DEG C, solid alkali is added and used as a catalyst, and stirring and catalytic reactionare simultaneously carried out for 15-300 minutes. The use of the ultrasonic waves or microwaves radiation in synergism with solid alkali for catalyzing and hydrolyzing the lignocellulose can greatlyreduce the reaction time as well as energy consumption. The solid alkali catalyst can be repeatedly used, is easily separated from an aqueous solution, and has the advantages of high mechanical strength, high durability, certain selectivity, relative singularity of catalytic hydrolyzate, high hydrolyzing efficiency and good market application prospect.

Technology Topic

Image

  • Method for hydrolyzing lignocellulose
  • Method for hydrolyzing lignocellulose
  • Method for hydrolyzing lignocellulose

Examples

  • Experimental program(8)

Example Embodiment

[0028] Example 1
[0029] Using corncob as the lignocellulose raw material, crush it to 20μm powder. The corncob powder and water are evenly mixed at a mass ratio of 1:15. The homogenate is preheated to 100°C with ultrasonic, ultrasonic radiation power is 800W, and duty cycle is 1. , Ultrasonic frequency 40KHz, the preheated homogenate is heated to 150℃, the pressure is 10MPa, and the metal oxide CaO-Al 2 O 3 As a catalyst, the amount of the catalyst is 1.2% of the weight of the lignocellulose, the stirring speed is 500 rpm, the reaction time is 60 minutes, and the hydrolysate becomes light yellow.

Example Embodiment

[0030] Example 2
[0031] Using straw as the lignocellulose raw material, it is crushed to 100μm powder, the straw powder and water are evenly mixed at a mass ratio of 1:25, the homogenate is preheated to 120°C with ultrasonic, ultrasonic radiation power is 2000W, duty ratio is 0.7, ultrasonic The frequency is 40KHz, the preheated homogenate is rapidly heated to 210℃, the pressure is 20MPa, and the supported metal oxide K 2 CO 3 /ZrO 2 As a catalyst, the amount of the catalyst is 1.4% of the weight of the lignocellulose, the stirring speed is 1000 rpm, and the reaction time is 120 min. The hydrolysate turns yellow.

Example Embodiment

[0032] Example 3
[0033] Using poplar as the lignocellulose raw material, pulverize it to a powder of 200μm. The poplar powder and water are evenly mixed at a mass ratio of 1:20. The homogenate is preheated to 80°C with ultrasonic, ultrasonic radiation power is 1500W, and duty cycle is 0.7 , Ultrasonic frequency 15KHz, the preheated homogenate is quickly heated to 180℃, the pressure is 6MPa, the anion exchange resin D315 is used as the catalyst, the amount of catalyst is 1.6% of the weight of lignocellulose, the stirring rate is 400rpm, the reaction time is 60min, and the hydrolyzed solution becomes light yellow.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Similar technology patents

Super-hydrophobic super-lipophilic emulsion separating mesh membrane, and production method and application thereof

InactiveCN104826363AHas the effect of demulsification and separationHigh mechanical strengthNon-miscible liquid separationChemistryNon toxicity
Owner:TSINGHUA UNIV

Classification and recommendation of technical efficacy words

  • High mechanical strength
  • Strong tolerance

Lactobacillus Plantarum ZN-3 and application thereof

ActiveCN107312726AStrong tolerancePreventing and Treating DiarrheaAntibacterial agentsBacteriaZoonotic pathogenPorcine contagious pleuropneumonia
Owner:WUHAN KEYUAN BIOLOGICAL DEV CO LTD

Marine zobellella sp. and application thereof

Owner:THIRD INST OF OCEANOGRAPHY STATE OCEANIC ADMINISTATION
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products