Technological method for transforming fuel alcohol in stages and cogenerating electricity and paper pulp with pennisetum hydridum

A technology of fuel ethanol and process method, applied in the field of comprehensive utilization of royal bamboo grass resources, to achieve the effects of saving resources, increasing the degree of dispersion, and improving utilization

Inactive Publication Date: 2009-09-02
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All the separated components can be utilized with maximum value, which overcomes the shortcomings of the single product of the traditional Huangzhucao utilization

Method used

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  • Technological method for transforming fuel alcohol in stages and cogenerating electricity and paper pulp with pennisetum hydridum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: ① steam explosion treatment: Cutting the Phyllostachys japonica into sections, using a steam explosion device to maintain the pressure at a pressure of 1.5 MPa for 3 minutes to carry out steam explosion treatment on the Phyllostachys japonica.

[0027] ② Preparation of xylo-oligosaccharides: the steam-exploded Bamboo Grass was washed with water, and the washing solution was degraded hemicellulose for the preparation of xylo-oligosaccharides.

[0028] ③Classification of long and short fibers: long fibers (fiber length greater than 3 centimeters) and short fibers (fiber length less than 3 centimeters) are obtained by classifying and carding the steam-exploded bamboo grass.

[0029] ④Long fiber pulping: After carding, the long fiber is made of ethanol with a concentration of 60% and a solid-to-liquid ratio of 1 / 10 (g / ml). At 160° C., heat preservation for 2 hours, extraction and delignification, to obtain coarse pulp. Then adopt two-stage bleaching technology, t...

Embodiment 2

[0038] Example 2: ① steam explosion treatment: Cutting the Phyllostachys japonica into sections, using a steam explosion device to maintain the pressure at a pressure of 1.5 MPa for 4 minutes to carry out steam explosion treatment on the Phyllostachys praecox.

[0039] ② Preparation of xylo-oligosaccharides: the steam-exploded Bamboo Grass was washed with water, and the washing solution was degraded hemicellulose for the preparation of xylo-oligosaccharides.

[0040] ③Classification of long and short fibers: long fibers (fiber length greater than 3 centimeters) and short fibers (fiber length less than 3 centimeters) are obtained by classifying and carding the steam-exploded bamboo grass.

[0041] ④Long fiber pulping: After carding, the long fiber is made of ethanol with a concentration of 60% and a solid-to-liquid ratio of 1 / 10 (g / ml). At 160° C., heat preservation for 2 hours, extraction and delignification, to obtain coarse pulp. Then adopt two-stage bleaching technology, th...

Embodiment 3

[0052] Example 3: ① steam explosion treatment: Cutting the Phyllostachys japonica into sections, and using a steam explosion device to maintain the pressure at a pressure of 1.5 MPa for 5 minutes to carry out steam explosion treatment on the Phyllostachys praecox.

[0053] ② Preparation of xylo-oligosaccharides: the steam-exploded Bamboo Grass was washed with water, and the washing solution was degraded hemicellulose for the preparation of xylo-oligosaccharides.

[0054] ③Classification of long and short fibers: long fibers (fiber length greater than 3 centimeters) and short fibers (fiber length less than 3 centimeters) are obtained by classifying and carding the steam-exploded bamboo grass.

[0055] ④Long fiber pulping: After carding, the long fiber is made of ethanol with a concentration of 60% and a solid-to-liquid ratio of 1 / 10 (g / ml). At 160° C., heat preservation for 2 hours, extract and delignify, and obtain coarse pulp. Then adopt two-stage bleaching technology, the co...

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Abstract

The invention pertains to the field of the comprehensive utilization of pennisetum hydridum resources and relates to a method for the staged transformation and poly-generation of pennisetum hydridum, wherein after the steam explosion, the pennisetum hydridum is washed with water and water lotion is degraded hemicellulose used for preparing Xyol-Oligosaccharides; and then staged carding is carried out to the pennisetum hydridum after the steam exploded treatment to obtain long fiber (the fiber length is more than 3cm) and short fiber (the fiber length is less than 3cm). The long fiber after the carding is used for the auto-catalytic pulping of alcohol to obtain pennisetum hydridum pulp and alcohol soluble lignin. The short fiber after the carding is used for the solid-state fermentation of cellulase and then for synchronous saccharification and fermentation of alcohol, and fermentation residues generated in fermentation are used for biomass power generation and CO2 generated in the fermentation is reclaimed. The fermentation residues for biomass power generation, the pennisetum hydridum pulp, the alcohol soluble lignin, Xyol-Oligosaccharides and CO2 generated in the fermentation are cogenerated in the whole technological process of the fermentation of fuel alcohol with the pennisetum hydridum so as to realize the highly efficient comprehensive utilization of pennisetum hydridum resources.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of royal bamboo grass resources, and in particular relates to a process method for co-producing power generation and pulp by fermenting fuel ethanol from royal bamboo grass. Background technique [0002] With the rapid increase of the world's population and the continuous development of the social economy, human beings have almost exhausted the fossil energy oil, coal, and natural gas accumulated on the earth for 2.5 billion years in the past 400 years. Since my country became a net importer of petroleum products for the first time in 1993, the import of crude oil exceeded 100 million tons in 2004. Therefore, in order to solve the problem of national energy security, it is imminent to find clean, cheap and renewable alternative energy! [0003] Among the energy sources that may replace fossil fuels, biomass has attracted the attention of the world for its advantages such as renewable, huge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/06C12P19/04D21B1/04C12R1/645C12R1/885
CPCC12M21/16C12M43/08C12M43/02Y02E50/16C12M45/20C12M45/02C12P7/10Y02E50/17D21C9/00D21H11/12D21C5/00D21C1/02C12M21/12Y02E50/10
Inventor 陈洪章张建兴梁灼林李勇
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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