Method for preparing ecological materials through steam explosion and refining of bamboo and recycling bamboo

An ecological material, energy-based technology, applied in the separation of plant raw materials, fibers, chemical post-processing of fibers, etc., to achieve the effect of reducing energy consumption, saving processes, improving utilization rate and added value

Inactive Publication Date: 2011-08-03
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

The inventor applied for the invention patent 200710177983.6 in response to this problem, and invented a method to make full use of the components in bamboo through steam explosion technology combined with the separation of long and short fibers. In addition to obtaining the target product bamboo fiber, it also co-produced xylooligosaccharides , bamboo pulp, ethanol, alcohol-soluble lignin, residual residue power generation and other products, which overcome the pollution and single-component utilization problems in the traditional bamboo fiber production process

Method used

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  • Method for preparing ecological materials through steam explosion and refining of bamboo and recycling bamboo

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Experimental program
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Effect test

Embodiment 1

[0029] ① Bamboo steam explosion pretreatment: After the bamboo is cleaned, arranged and dried, it is made into bamboo strips; placed in a steam explosion treatment device, maintained at 12MPa saturated steam pressure for 5 minutes, and the bamboo chip raw material is subjected to steam explosion treatment;

[0030] ②Biogas fermentation of steamed firecracker material washing liquid: the total sugar content in the steam firecracker material washing liquid is about 23g / L, and the fiber material after washing is separated by a fiber carding device to obtain short fibers less than 5cm and Long fibers larger than 5cm; add 25ml of activated sludge and 0.1g of beef extract to 100ml of washed sugar solution, adjust the pH to 6.5, ferment at 50°C, and collect gas;

[0031] ③Prepare bamboo fibers from long fibers and separate waste long fibers: use a fiber splitting device to decompose the steamed bamboo material coarse fibers into thinner fibers, and obtain long fibers with strong tough...

Embodiment 2

[0034] ① Bamboo steam explosion pretreatment: After the bamboo is cleaned, arranged and dried, it is made into bamboo strips; placed in a steam explosion treatment device, maintained at 12MPa saturated steam pressure for 5 minutes, and the bamboo chip raw material is subjected to steam explosion treatment;

[0035] ②Butanol fermentation of the steamed firecracker material washing liquid: the total sugar content in the steamed firecracker material washing liquid is about 23g / L, and the fiber material after washing is separated by a fiber carding device to obtain short fibers less than 5cm according to the length of the steam firecracker material fiber And long fibers larger than 5cm; the washing solution is treated with 7.5% activated carbon at 30°C and 150rpm for 12h, then adjusted to pH 6.5, sterilized at 121°C for 15min, and after cooling to room temperature, add 10% (v / v) Clostridium acetobutylicum ATCC 824 seed culture medium, static anaerobic culture at 37°C, and the tota...

Embodiment 3

[0040] ① Bamboo steam explosion pretreatment: After the bamboo is cleaned, arranged and dried, it is made into bamboo strips; placed in a steam explosion treatment device, maintained at 12MPa saturated steam pressure for 5 minutes, and the bamboo chip raw material is subjected to steam explosion treatment;

[0041] ②Biogas fermentation of steamed firecracker material washing liquid: the total sugar content in the steam firecracker material washing liquid is about 23g / L, and the fiber material after washing is separated by a fiber carding device to obtain short fibers less than 5cm and Long fibers larger than 5cm; add 25ml of activated sludge and 0.1g of beef extract to 100ml of washed sugar solution, adjust the pH to 6.5, ferment at 50°C, and collect gas;

[0042] ③Prepare bamboo fibers from long fibers and separate waste long fibers: use a fiber splitting device to decompose the steamed bamboo material coarse fibers into thinner fibers, and obtain long fibers with strong tough...

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Abstract

The invention belongs to the field of utilization of bamboo resources, relates to a method for preparing ecological materials through steam explosion and refining of bamboo and recycling the bamboo, and mainly aims to comprehensively utilize the bamboo resources in an environment-friendly high-value mode and co-produce biobased ecological materials such as bamboo fibers, a wood-plastic material and the like, and clean energy such as biogas and the like. The technical scheme comprises the following steps that: (1) the bamboo is subjected to steam explosion, and washed and filtered so as to obtain washing solution and a fiber material, and the washing solution is used for fermenting bioenergy such as the biogas, butanol and the like; (2) waste long fibers produced in the process of preparing the bamboo fibers from long fibers can be used for preparing the ecological materials such as the wood-plastic material, microcrystalline cellulose, dissolving pulp, liquefied polyether polyol and the like; and (3) short fibers are subjected to enzymolysis and fermentation for fermenting biological butanol, and also can be used for preparing the ecological materials such as the wood-plastic material, the liquefied polyether polyol and the like. Through the technical scheme, the utilization rate and the added value of the bamboo resources are high, and a bamboo refining process system is low in energy consumption, simple in process, clean and environment-friendly.

Description

【Technical field】 [0001] The invention belongs to the field of utilization of bamboo resources, in particular to a method for preparing ecological materials through steam explosion refining of bamboo and energy conversion thereof. 【Background technique】 [0002] Non-renewable fossil resources such as oil and natural gas form the cornerstone of the world's fuel and chemical industries today. However, since the 21st century, due to the non-renewability of fossil fuels and environmental problems such as the greenhouse effect, acid rain, and dust pollution caused by the use of fossil fuels, the production of high value-added chemical products from renewable plant resources, especially woody biomass, has become a major issue for many It is an important development field of the country and a hotspot of scientific research. In view of our country's basic national conditions of large population and small land and the severe situation of the global energy crisis, the development of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01C1/00D01C1/02D01G5/00C08L97/02C08L23/06C08L23/12C08L55/02C08L27/06C08L25/06C08G65/00C08B15/08B29C47/92B29C48/92
Inventor 陈洪章邱卫华
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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