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

Method for producing ethanol from crop straw

A crop straw and ethanol technology, applied in the direction of microorganism-based methods, biochemical equipment and methods, microorganisms, etc., can solve the problems of increased production costs, large heat energy, increased costs, etc., and achieve the effect of reducing production and production costs

Active Publication Date: 2008-05-28
ANHUI BBCA FERMENTATION TECH ENG RES
View PDF2 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the following disadvantages: one, due to the reaction at high temperature, hemicellulose will be converted into five-carbon sugars such as furfural, if it is not separated, then materials such as furfural will inhibit the ethanol fermentation in the later stage, and increase the content of materials such as furfural The separation step leads to an increase in production cost; second, the lignin in the filtrate is not further utilized; third, the evaporation of water before solid-state fermentation consumes a large amount of heat energy, which greatly increases the cost of 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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for producing ethanol from crop straw
  • Method for producing ethanol from crop straw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1. The processing of corn stalk

[0044] Take 100 kg of corn stalks, remove the leaves and roots by hand, and use the straw feed kneading machine (Wanqing 9STC-400 machine) and SFSP56×36 chip grinder (Jiangsu Muyang Group) for processing, and the hole diameter of the bottom discharge screen is Ф5' The straw powdery material is obtained.

Embodiment 2

[0045] Embodiment 2. dilute lye cooking pretreatment

[0046] Take the reactor as 0.8m 3 , Cylindrical reactor with a rotation speed of 1r / min, electric heating. Open the flange cover at one end of the cylindrical reactor, add 100kg of pulverized straw lumps, then add 600kg, 1.8% NaOH aqueous solution, cover the flange cover, and tighten it. Heat to 120°C under rotation, hold for 1 hour, then cool, open the flange and pour out the entire contents.

Embodiment 3

[0047] Embodiment 3. solid-liquid separation

[0048] The above-mentioned alkali-cooked materials are transferred to the DJG350 screw squeezer. Start the machine to collect liquid from the bottom and solids from the discharge end. After all the materials enter the squeeze dryer for the first time, add the collected solids, and add hot water at a ratio of 1:1 until all the materials enter the squeeze dryer.

[0049] Or use a separator (SS450 type three-legged upper discharge centrifuge, rotating speed 3000r / min, maximum loading capacity 30kg), separate 30kg of material each time, and centrifuge for 10min under the condition of 3000r / min to discharge the liquid. A solid with a water content of 65% to 75% is obtained. Take out the solids, put in water 5-6 times the weight of the solids, adjust the slurry, and then add it to a centrifuge for separation. Repeat twice continuously to reduce the alkali content in the stalks, and the pH of the water for the second washing is 9.0. ...

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 provides a process for producing ethanol with raw materials of straws. The process comprises preliminary treatment to crops straws, solid-liquid separation, hydrolyzed solid components and fermentation with yeasts after hyperfiltration and filtration enrichment by RO combination. The invention can simultaneously conduct evaporating concentration to liquid components, and produce corresponding by-product of lignosulfonate by adding sulfonating agent. The ethanol producing process of the invention greatly decreases the cost of industrial production which ferments straws to produce ethanol, and efficiently utilizes all the ingredients of crops straws.

Description

technical field [0001] The present invention relates to a method for producing ethanol. More specifically, the invention relates to a method for producing ethanol by fermenting crop stalks. Background technique [0002] Since the energy crisis in the 1970s, people have begun to look for new renewable fuels to replace non-renewable energy sources such as petroleum and coal, and lignocellulose is the largest renewable resource on earth, so it is used as cheap sugar The production of fuel ethanol from natural sources should be the most effective way to solve the world energy crisis. [0003] The United States, Brazil and other countries have already successfully blended fuel ethanol into gasoline and sold it in large quantities in the market. And the United States is already researching and developing ethanol diesel. Therefore, ethanol is becoming a renewable energy source that people pay more and more attention to. The key to using ethanol as an alternative energy source fo...

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): C12P39/00C12P7/10C12R1/72C12R1/85
CPCY02E50/16Y02E50/10
Inventor 李荣杰薛培俭宋加林邓远德郑辉穆晓玲杨为华
Owner ANHUI BBCA FERMENTATION TECH ENG RES
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com