Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing fuel ethanol from corn straws

A technology of corn stalks and fuel ethanol, applied in the direction of microorganism-based methods, biochemical equipment and methods, biofuels, etc., can solve the problem that the conversion rate is not enough to meet industrial production, and achieve the effect of improving the conversion rate of sugar alcohol

Pending Publication Date: 2022-01-11
SHANDONG TRALIN PAPER
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method provides a method for producing ethanol by using black liquor and waste residue wheat bran in the papermaking process, but the conversion rate of polysaccharides into monosaccharides is not enough to meet the requirements of industrial production.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A method for producing powdered ethanol with corn stalks as a raw material, the specific steps comprising:

[0031] 1) plate culture

[0032] The composition of the plate medium is 1L of straw enzymatic hydrolysis solution (containing 3% glucose), accounting for 20% of the total weight, and 0.3% of Angelica thermostable yeast; the Angelica thermostable yeast is inserted into the medium, and cultured at 30°C 25 hours;

[0033] 2) Shake flask seed culture

[0034] The shake flask seed culture consists of 3% glucose, 0.2% yeast, 0.05% potassium dihydrogen phosphate, 0.06% ammonium sulfate, pH5.6, and tap water;

[0035] Inoculate the plate-cultured angel high-temperature-resistant yeast into the seed medium of the shaker flask, fill a 500ml Erlenmeyer flask with a liquid volume of 100ml, and cultivate it at 30°C for 32 hours, and the shaker speed is 200rpm;

[0036] 3) Seed pot seed culture

[0037] The composition of the seed tank seed medium is 22% of straw enzymatic...

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 discloses a method for preparing fuel ethanol from corn straws, which comprises the following steps: carrying out enzymolysis on a cooked corn straw cellulose raw material, adding Angel high-temperature-resistant yeast into the prepared straw enzymatic hydrolysate to carry out low-sugar fermentation, starting to add the straw enzymatic hydrolysate when the total sugar concentration in the fermentation liquid is reduced to 0.7-1.1%, and the total sugar concentration in the fermentation liquid is maintained to be 2.2-3.2%. According to the invention, a low-sugar fermentation method is adopted for preparation, the period of ethanol fermentation is effectively shortened, the ethanol concentration is increased, and the sugar liquor conversion rate is increased, so that the comprehensive utilization rate of the corn straw cellulose raw material is effectively increased.

Description

technical field [0001] The invention relates to a method for preparing fuel ethanol from corn stalks. Background technique [0002] Energy and environmental issues have increasingly become the focus of global attention. With the depletion of fossil energy and the serious emission of greenhouse gases, the development of clean and renewable energy has become an urgent issue. The utilization of biomass energy has attracted people's attention. [0003] Biomass is the most abundant renewable resource in nature. The total amount of carbon fixed in green plants through photosynthesis on the earth can reach 2×10 11 tons, the biomass is 1.7×10 11 Ton. China is rich in biomass resources, among which the annual total amount of crop straw is 7×10 8 tons, forest waste about 2×10 8 tons, plus a huge amount of forestry fiber waste and industrial fiber residue, the total amount of cellulosic biomass available per year can reach about 2×10 9 more than tons. Cellulosic biomass is mainl...

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
IPC IPC(8): C12P7/10C12P19/14C12P19/02C12R1/865
CPCC12P7/10C12P19/14C12P19/02C12P2201/00Y02E50/10
Inventor 牛彦生毕衍金宋明信
Owner SHANDONG TRALIN PAPER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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