A method for comprehensive utilization of straw raw materials

A technology for straw and raw materials, which is applied in the directions of microorganism-based methods, fiber raw material processing, biochemical equipment and methods, etc., can solve the problems of low comprehensive utilization rate of straw resources, restricting the healthy development of the acetone-butanol fermentation industry, and large market fluctuations. , to solve the problem of raw material source, improve the comprehensive utilization value, reduce the dosage and cost

Active Publication Date: 2011-12-14
NANTONG HEBAO BIOTECH
View PDF2 Cites 34 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the depletion of petroleum resources, the energy problem has attracted more and more attention from the public, and the acetone-butanol fermentation industry liquid has attracted more and more attention from the people. However, the traditional raw materials for acetone-butanol fermentation are corn and cassava, and the cost of raw materials is high. The market fluctuates greatly, which greatly limits the healthy development of the acetone-butanol fermentation industry. Straw is the main by-product of crops and is also a very valuable biological resource. However, the main reason why there has been no breakthrough in the production of ethanol and butanol from straw for a long time The comprehensive utilization rate of straw resources is low, the cost of cellulase is high, and the dosage is large. It is urgent to develop new technologies for comprehensive utilization of straw so that the components of straw can be used efficiently.

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 comprehensive utilization of straw raw materials
  • A method for comprehensive utilization of straw raw materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Such as figure 1 As shown, a method for comprehensive utilization of straw raw materials, the process steps are: a. Take 500 parts of wheat straw, add 750 parts of water, soak for 3 minutes, soak the wheat straw for 3 minutes at a pressure of 0.5Mpa, and obtain steam-exploded wheat straw , add 500 parts of water to the steam-exploded wheat straw, control the temperature at 60°C and fully soak for 15 minutes, then use a screw extruder to separate the steam-exploded wheat straw liquid and the steam-exploded wheat straw solid, so that half of the jade wheat straw The cellulose is fully separated, and the steam-exploded wheat straw solid is steamed and treated with 2% sodium hydroxide at 80°C for 40 minutes, and solid-liquid separation is carried out to obtain the extraction slag and extract respectively, and the extract is extracted with 10% sulfuric acid The pH of the liquid is adjusted to 3.0, the temperature is kept at 50°C, and the acid precipitation time is 30 minutes...

Embodiment 2

[0021] Such as figure 1 As shown, a method for comprehensive utilization of straw raw materials, the process steps are: a. Take 500 parts of corn stalks, add 500 parts of water, soak for 4 minutes, soak the corn stalks at a pressure of 1Mpa for 5 minutes, and obtain steam-exploded corn stalks. Add 750 parts of water to the steam-exploded corn stalks, control the temperature at 65°C and fully soak for 20 minutes, then use a screw extruder to separate the steam-exploded corn stalks into two parts, the liquid and the steam-exploded corn stalks, so that the hemicellulose in the corn stalks Fully separated, steam-exploded corn stalk solids were cooked with 3% sodium hydroxide at 90°C for 60 minutes, and solid-liquid separation was carried out to obtain the extraction residue and extract respectively, and the extract was adjusted with 10% sulfuric acid. pH to 3.2, temperature maintained at 55°C, and acid precipitation time of 40 minutes, the precipitated lignin was filtered through ...

Embodiment 3

[0025] Such as figure 1 As shown, a method for comprehensive utilization of straw raw materials, the process steps are: a. Take 500 parts of straw, add 700 parts of water, soak for 4 minutes, soak the straw for 15 minutes at a pressure of 2Mpa, and obtain the steam-exploded straw. Add 700 parts of water to the straw, control the temperature at 68°C and fully soak for 30 minutes, then use a screw extruder to separate the steam-exploded straw liquid and the steam-exploded straw solid, so that the hemicellulose in the straw can be fully separated, and the steam-exploded straw The solid was cooked at 110°C with 4% sodium hydroxide for 100 minutes, and solid-liquid separation was carried out to obtain the extraction residue and extract respectively. The pH of the extract was adjusted to 3.4 with 10% sulfuric acid, and the temperature was kept at 58 ℃, the acid analysis time is 50 minutes, and the precipitated lignin is filtered through an 80-mesh plate frame to obtain wet lignin, a...

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 relates to a comprehensive utilization method of straw raw materials. The method is characterized by comprising the following steps: a, carrying out solid-liquid separation on steam-exploded straws, using an alkaline cooking method to process solid bodies of the steam-exploded straws, and extracting good xylogens from an alkaline extract liquor by an acid-out method; b, carrying out enzymolysis on the extracted residues in the step a to obtain zymolytic residues and a zymolytic liquid, wherein the zymolytic residues are used for preparing pulps; and c, after the steam-exploded straws in the step a are detoxificated, mixing a zymolytic liquid with the zymolytic liquid in the step b and adding nitrogen sources to butylicum fermentation. The method has the advantages that sources of raw materials are wide; the separation of celluloses (continuous fibers and staple fibers), hemicelluloses, xylogens and the like in the straws is realized, thus sufficiently realizing the value of each component; and the celluloses are divided into the continuous fibers which are difficult to realize enzymolysis and the staple fibers which are easy to realize enzymolysis, thus reducing the usage amount and cost of the cellulase, improving the comprehensive utilization value of the straws and solving the source problem of raw materials in industrialization production of the butylicum fermentation.

Description

technical field [0001] The invention relates to a comprehensive utilization method of straw raw materials. Background technique [0002] In recent years, with the development of the rural economy and the improvement of farmers' living standards, my country's grain production capacity has increased year by year, but the straw that was in demand in the past has now become a worrying "burden", which has caused pollution of the environment and waste of resources by straw burning. Many problems, how to find a way out for the increasing straw and turning waste into treasure has become an imminent social problem. The comprehensive utilization of straw provides new opportunities for solving the contradiction between energy supply and demand. Therefore, actively developing renewable energy is crucial to solving the problem in rural areas. Living energy and ecological construction are of great significance. [0003] With the depletion of petroleum resources, the energy problem has attr...

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 Applications(China)
IPC IPC(8): C12P7/16C12P7/36C08H7/00D21C5/00D21H11/12C12R1/145
Inventor 温志明唐波
Owner NANTONG HEBAO BIOTECH
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap