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Comprehensive Utilization Method of Corn Cob

A corncob and lignin technology, applied in chemical instruments and methods, preparation of sugar derivatives, oligosaccharides, etc., to achieve improved yield, simple extraction process, and improved ethanol conversion rate

Active Publication Date: 2011-12-14
重庆辉泰化工销售有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a new method for the comprehensive utilization of corncobs, which can efficiently utilize renewable biological resources such as corncobs, and solve the problem of preparing xylo-oligosaccharides from corncobs and enzymatic hydrolysis of ethanol in the existing biorefinery industry The efficiency of the conversion and separation of the three major biomass components contained in the corn cob is greatly improved by selecting the best process and rationally designing the process sequence in the new method, and the resources are rationally and effectively used, especially the lignin It can replace some petrochemical raw materials, and will produce significant social benefits; and the process of comprehensive utilization of corncobs is simple, easy to implement, and the effect is good

Method used

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  • Comprehensive Utilization Method of Corn Cob
  • Comprehensive Utilization Method of Corn Cob

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043]Use a crusher to crush 100g of corncobs into fragments with a diameter of less than 1 cm, and use a QBS-80 steam explosion device to implement pulsed steam explosion under the conditions of a steam pressure of 2.0 MPa and a holding time of 90 seconds to make the material slurry . Wash with 200ml of water, separate by centrifugal filtration, and dry the solid components to obtain 75.1g filter residue. After analysis, the hemicellulose content in the filter residue is reduced from 23.73% before the steam explosion of the raw material to 4.15%, which shows that the above steam explosion treatment has eliminated most of the Hemicellulose is degraded into xylo-oligosaccharides which are dissolved in water and separated from corn cob residue. Then the obtained filter residue was cooked with 400ml, 2% by weight aqueous sodium hydroxide solution at 90°C for 1h, centrifuged, the filter residue was washed with water to neutrality, and the filtrate was adjusted to a pH of 3 with 40...

Embodiment 2

[0045] Use a crusher to crush 100g of corncobs into fragments with a diameter of less than 1 cm. Use a QBS-80 steam explosion device to implement pulsed steam explosion under the conditions of a steam pressure of 2.0 MPa and a holding time of 90 seconds to make the material slurry. Wash with 200ml of water, separate by centrifugal filtration, and dry the solid components to obtain 75.3g of filter residue. After analysis, the hemicellulose content in the filter residue is reduced from 23.73% before the steam explosion of the raw material to 4.45%. Hemicellulose is degraded into xylo-oligosaccharides which are dissolved in water and separated from corn cob residue. Then the obtained filter residue was cooked with 400ml, 2% by weight aqueous sodium hydroxide solution at 90°C for 1h, centrifuged, the filter residue was washed with water to neutrality, and the filtrate was adjusted to a pH of 3 with 400ml, 2% by weight aqueous hydrochloric acid solution. , stand still, centrifuge a...

Embodiment 3

[0047] Use a crusher to crush 100g of corncobs into fragments with a diameter of less than 1 cm. Use the QBS-80 steam explosion experimental device to implement pulsed steam explosion under the conditions of a steam pressure of 2.8 MPa and a holding time of 80 seconds to make the material slurry. Wash with 200ml of water, separate by centrifugal filtration, and dry the solid components to obtain 74.7g of filter residue. After analysis, the hemicellulose content in the filter residue is reduced from 23.73% to 2.95% from 23.73% before the steam explosion of the raw material, indicating that the above steam explosion treatment has removed most of the Hemicellulose is degraded into xylo-oligosaccharides which are dissolved in water and separated from corn cob residue. Then the obtained filter residue was cooked with 400ml, 2% by weight aqueous sodium hydroxide solution at 90°C for 1h, centrifuged, the filter residue was washed with water to neutrality, and the filtrate was adjusted...

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Abstract

The invention provides a comprehensive utilization method of corn cob, which effectively separates hemicellulose, lignin and cellulose contained in a reproducible biological resource of corn cob in a reasonable process order at low cost and high efficiency, and makes full use of every type of biomass components, thereby solving the problem of utilization of residue in the biomass refining process of preparing ethanol and butanol by extracting xyio-oligosacchandes and enzymolysis from the corn cob in the prior art, and making reasonable and effective use of main components of biomass contained in the corn cob; particularly, the lignin can substitute partial petrochemical materials to prepare modified high-molecular materials, thereby reducing the cost of high-molecular materials and saving the energy consumption of petrochemical materials to bring great social benefit; in addition, the comprehensive utilization method of corn cob is featured by simple processing technique, easy implementation and favorable effect.

Description

technical field [0001] The invention belongs to the technical field of biomass refining engineering, and more specifically relates to a new method for comprehensively utilizing corn cobs. Background technique [0002] As the world's oil resources are dwindling, it is imperative to vigorously develop renewable energy. Renewable energy includes water energy, wind energy, solar energy, biomass energy, geothermal energy and ocean energy, etc. These clean energy sources have great potential, are environmentally friendly and can be recycled. Among them, biomass energy is the energy of solar energy stored in biomass in the form of chemical energy. It is the only renewable energy that can be stored and transported in the form of physical objects based on biomass. [0003] In recent years, a lot of research has been carried out on bio-alcohol and other biomass new energy at home and abroad, and biomass resources are receiving more and more attention. Corn is a common crop with a la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08H7/00C07H1/00C07H3/06C12P7/10
CPCY02E50/16Y02E50/10
Inventor 程贤甦靳艳巧
Owner 重庆辉泰化工销售有限公司
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