Process for preparing fuel ethanol by using straw fiber materials

A fuel ethanol and fiber-like technology, which is applied in the direction of fuel, liquid carbon-containing fuel, petroleum industry, etc., can solve the problems of insufficient raw material pretreatment methods, high ethanol cost, and affecting the output rate of ethanol fuel

Inactive Publication Date: 2006-12-20
HENAN AGRICULTURAL UNIVERSITY
View PDF0 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above process can use crop straw to produce fuel ethanol, but due to the inadequate pretreatment method of raw materials, the output rate of ethanol fuel is affected, so that the cost of ethanol production is too high

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 Construction

[0022] A method for producing fuel ethanol from straw-like fiber raw materials, including the following steps (1) raw material selection: crop stalks, mainly including wheat straw, corn stalks, rice straw, etc., which are naturally dried and used for later use; (2) crushing: straw and straw by hammer Crushing and sieving rice straw powder into 20-40 meshes with a pulverizer; (3) Pretreatment; (4) Double enzyme saccharification: using cellulase and xylanase at 45℃, pH4.5, 150rpm, liquid-solid ratio Saccharify the straw under the condition of 15 to obtain reducing sugar; (5) Filtration: After filtering the saccharification liquid of the straw to remove the solid insoluble matter, it becomes a clear saccharification liquid; (6) Sterilization: adjusted by adding nutrients The saccharification solution must be sterilized at 121°C for 30 minutes; (7) Expanded cultivation and application of Pachysolentannophilus P-01: Use minimal medium to expand P-01, and then press 10% The inoculum is ...

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

This invention discloses a method for producing fuel ethanol from a straw fibre raw material, comprising: (1) raw material selection; (2) disintegration; (3) pre-processing; (4) double-enzyme saccharifying; (5) sterilization; (6) enlargement culture and application of Pachysolen tannophilus P-01; (7) fermentation; (8) distillation; characterizing: the pre-processing employs white-rot fungi solid culture to decompose lignin. The procedures comprise: (1) bacteria selection: Phanerochete chrysosporium, which is donated by Shanghai hydnology institute of Chinese Academy of Agricultural Sciences, is a fugus, and can produce lignin decomposing enzymes under specific culture conditions, comprising lignin peroxidase, manganese dependent peroxidase, laccase, and so on; (2) specific culture media producing conditions: i. add 2g glucose, 0.3g ammonium chloride and 100g water to dry straw per 100g and mix homogenously, sterilize at 121Deg C for 2h, inoculate Phanerochete chrysosporium for culture decomposition; ii. conditions of culture decomposition: inoculation 5%, 37-39Deg C, pH normal, material to volume: 1:5 ( dry material weight: container volume), cycle 30 days. This invention can improve the ethanol yield and decease cost.

Description

Technical field [0001] The invention relates to a method for producing liquid fuel, in particular to a method for producing fuel ethanol by using straw fiber raw materials. Background technique [0002] In the context of serious crises and serious environmental pollution caused by traditional fossil energy sources such as coal and oil, fuel ethanol has attracted much attention from the government and society for its advantages of renewable, no environmental pollution, and the use of technology in motor vehicles to pass customs. However, the traditional production of fuel ethanol mainly uses starchy raw materials such as wheat, corn, dried potato, etc., or carbohydrate raw materials such as sugar cane molasses, beet molasses, etc., which require a large amount of crops and high production costs. my country is a large agricultural country with abundant plant fiber resources. The annual output of crop straw alone is 700 million tons. The current use is mainly for rural cooking, some...

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): C10L1/02
Inventor 张百良宋安东
Owner HENAN AGRICULTURAL UNIVERSITY
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