Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for producing xylose and furfural by enzymatic hydrolysis of bagasse

A technology of bagasse and enzymatic hydrolysis, applied in the field of producing xylose and furfural, can solve the problems of large waste water, low yield, high yield, etc., and achieve the effects of small amount of acid-base waste water, low equipment investment, and easy-to-obtain materials

Active Publication Date: 2021-11-02
SICHUAN GOLDEN ELEPHANT SINCERITY CHEM CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method is environmentally friendly, has no sewage discharge, low energy consumption, and high yield, and can solve the shortcomings of the prior art such as large amount of wastewater, serious pollution, and low yield.

Method used

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for producing xylose and furfural by enzymatic hydrolysis of bagasse
  • A method for producing xylose and furfural by enzymatic hydrolysis of bagasse
  • A method for producing xylose and furfural by enzymatic hydrolysis of bagasse

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] 1) Bagasse (the part left after sugarcane is mechanically squeezed and extracted) is dipped in double-helix countercurrent at a temperature of 40°C to remove residual sucrose and sand and other impurities;

[0063] 2) The soaked bagasse and the lye with a mass concentration of 0.2% are subjected to countercurrent leaching in a QBT1849-1993 double-helix continuous leaching device with a solid-to-liquid ratio of 1:4 and a reaction time of 30 minutes. Then utilize the wringer device attached to the extruder to wring out for later use. The water content in the wrung out bagasse is 40wt%; the extruded water is recycled as washing water after precipitation. The base used was NaOH.

[0064] 3) In order to prevent the degradation of hemicellulose and lignin, the extruded material is subjected to low-temperature and high-pressure steam explosion, with a steam explosion temperature of 120°C, a time of 100S, and a pressure of 1.9MPa (heated to 120°C with steam first, and then heat...

Embodiment 2

[0075] 1) Bagasse is soaked in double-helix countercurrent at a temperature of 40°C to remove residual sucrose and sand and other impurities;

[0076] 2) The washed bagasse and lye with a concentration of 0.2% are subjected to countercurrent immersion in a QBT1849-1993 double-helix continuous leaching device with a solid-to-liquid ratio of 1:4 and a reaction time of 30 minutes. The drying device is squeezed for standby, and the water content in the squeezed bagasse is 30wt%; the extruded water is recycled as washing water after being precipitated.

[0077] 3) In order to prevent the degradation of hemicellulose and lignin, the squeezed material is subjected to low-temperature and high-pressure steam explosion, the steam explosion temperature is 120°C, the time is 100S, and the pressure is 1.9MPa (heated to 120°C with steam first, and then pressurized with compressed air to 1.9MPa);

[0078] 4) The steam-exploded material is treated with "a device for extracting xylose from ba...

Embodiment 3

[0085] 1) Bagasse is soaked in double-helix countercurrent at a temperature of 40°C to remove residual sucrose and sand and other impurities;

[0086] 2) The washed bagasse and lye with a concentration of 0.2% are subjected to countercurrent immersion in a QBT1849-1993 double-helix continuous leaching device with a solid-to-liquid ratio of 1:4 and a reaction time of 30 minutes. The drying device is squeezed for standby, and the water content in the squeezed bagasse is 30wt%; the extruded water is recycled as washing water after being precipitated.

[0087] 3) In order to prevent the degradation of hemicellulose and lignin, the squeezed material is subjected to low-temperature and high-pressure steam explosion, the steam explosion temperature is 120°C, the time is 100S, and the pressure is 1.9MPa (heated to 120°C with steam first, and then pressurized with compressed air to 1.9MPa);

[0088] 4) The steam-exploded material is treated with "a device for extracting xylose from ba...

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 Login to View More

Abstract

The invention belongs to the technical field of chemical industry, and specifically relates to a method for producing xylose and furfural by enzymatic hydrolysis of bagasse. The method comprises the following steps: 1) washing the bagasse with water to remove impurities, and washing away residual sucrose and sand; 2) mixing the washed bagasse with lye, performing a countercurrent reaction, and squeezing dry for later use; 3) instant drying at low temperature Steam explosion treatment; 4) Wash the material after steam explosion; 5) Add NaOH countercurrent extraction; 6) Enzymolysis, etc. Because the present invention uses low-temperature steam explosion, retains hemicellulose and adopts low-temperature alkaline solution to extract, improves the extraction rate of hemicellulose; Adopt existing technology, promptly utilize methyl alcohol to be dissolved in alkaline solution hemicellulose separation and The physical and chemical characteristics of precipitation, methanol forms a hydrophobic effect, destroys the affinity effect between hemicellulose and alkaline solution, promotes the efficient separation of hemicellulose from methanol alkaline solution and in situ precipitation, so as to realize the high efficiency of hemicellulose extract.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and specifically relates to a method for producing xylose and furfural by enzymatic hydrolysis of bagasse. Background technique [0002] Furfural is mainly produced by the dehydration of pentose, so the fiber biomass containing polypentose (hemicellulose) can be used as a raw material for the production of furfural. The biomass raw materials used to produce furfural in industry mainly include corncobs, corn stalks, rice husks, bagasse, wheat straw, sunflower seed husks, cottonseed husks, palm trees, peanut shells, waste wood, etc. Under the same conditions, the higher the pentose content, the more beneficial to improve the aldehyde yield. In terms of pure dry biomass, the theoretical furfural production per gram of corn cob is 0.22g, bagasse is 0.17g, corn stalk is 0.165g, sunflower husk is 0.16g, rice husk is 0.12g, hardwood is 0.15~ 0.17g, pentose sugar exists in the form of polypen...

Claims

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C12P19/02C12P17/04
CPCC12P17/04C12P19/02
Inventor 郭志刚唐印雷林刘朝慧李旭初李刚王明权
Owner SICHUAN GOLDEN ELEPHANT SINCERITY CHEM CO LTD