Co-production preparation method of bamboo biomass fuel and bamboo pulp

A biomass fuel, bamboo pulp technology, applied in the direction of biofuel, waste fuel, fuel, etc., can solve the high investment and operation cost of sewage treatment equipment, bamboo tail and branches and leaves are not effectively used, increase resources and environmental load, etc. problems, to increase the consumption of chemicals, avoid the requirements of chemical corrosion resistance, and reduce the yield of cellulose

Inactive Publication Date: 2011-10-26
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the process of bamboo pulping, a large amount of hemicellulose and lignin will be dissolved, causing serious environmental pollution. The high investment and operating costs of sewage treatment equipment will increase the production cost of enterprises and affect e...

Method used

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  • Co-production preparation method of bamboo biomass fuel and bamboo pulp
  • Co-production preparation method of bamboo biomass fuel and bamboo pulp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Extraction of hemicellulose

[0024] Cut the bamboo raw material into pieces with a length of 20mm, wash with clean water to remove sand and dust, put it in a pot according to the liquid-solid ratio of 3:1, heat it up to 155°C, and keep it warm for 120 minutes, then carry out hot water extraction and hydrolysis of semi-fiber Using a sieve to filter the hemicellulose-containing extract from the sheet material under normal pressure to obtain the hemicellulose extract liquid and the hydrolyzed sheet material;

[0025] (2) Cellulose extrusion, kneading and splitting

[0026] Use a parallel twin-screw extruder to apply an extrusion pressure greater than 1 MPa to the hydrolyzed sheet material in step (1), and control the friction temperature to 90°C. Squeeze and knead with a compression ratio of 4:1 to make the sheet material into a filament material, and extrude the hemicellulose and lignin extract to obtain the remaining filament material, and then to the remaining fil...

Embodiment 2

[0034] (1) Extraction of hemicellulose

[0035] Cut the bamboo raw material into pieces with a length of 25mm, wash with clean water to remove sand and dust, put it in a pot according to the liquid-solid ratio of 3:1, heat it up to 160°C, keep it warm for 130 minutes, and carry out hot water extraction and hydrolysis of semi-fiber Using a sieve to filter the hemicellulose-containing extract from the sheet material under normal pressure to obtain the hemicellulose extract liquid and the hydrolyzed sheet material;

[0036] (2) Cellulose extrusion, kneading and splitting

[0037] Use a parallel twin-screw extruder to apply an extrusion pressure greater than 1 MPa to the hydrolyzed sheet material in step (1), and control the friction temperature to 100°C. Squeeze and knead with a compression ratio of 4:1 to make the flake material into a filamentous material. After extruding the hemicellulose and lignin extract, the remaining filamentous material is poured into the remaining fila...

Embodiment 3

[0045] (1) Extraction of hemicellulose

[0046] Cut bamboo raw materials into slices with a length of 30mm, wash with clean water to remove sand and dust, put them in a pot according to the liquid-solid ratio of 3:1, heat up to 155°C, keep warm for 200 minutes, and carry out hot water extraction and hydrolysis of semi-fiber Using a sieve to filter the hemicellulose-containing extract from the sheet material under normal pressure to obtain the hemicellulose extract liquid and the hydrolyzed sheet material;

[0047] (2) Cellulose extrusion, kneading and splitting

[0048] Use a parallel twin-screw extruder to apply an extrusion pressure greater than 1 MPa to the hydrolyzed sheet material in step (1), and control the friction temperature to 120°C; extrude and knead with a compression ratio of 4:1 to make the sheet material Become a filamentous material, extrude the hemicellulose and lignin extract to obtain the remaining filamentous material; add 2% alkali and 4% hydrogen peroxi...

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Abstract

The invention relates to a co-production preparation method of bamboo biomass fuel and bamboo pulp, and the method comprises the following steps: (1) performing hot-water extraction for getting a hemicellulose extract liquid; (2) extruding and rubbing cellulose, and extruding for removing a hemicellulose and lignin extract liquid and further getting a filamentous material; (3) performing depth extraction on the cellulose and preparing the bamboo pulp: adding alkali into the filamentous material, performing heating-up treatment, washing, and filtering out a hemicellulose and lignin degradation solution, thus getting the bamboo pulp; (4) preparing biomass fuel ethanol: separating hemicellulose, performing saccharification conversion, further inoculating microzyme for fermentation, and performing distillation and concentration to get the biomass fuel ethanol; and (5) preparing biomass fuel particles: smashing slender bamboo tails, branches and leaves, then mixing with sludge and residual liquid after separating the hemicellulose in the step (4), and performing extrusion forming and drying for getting the biomass fuel particles. The process is advanced; and furthermore, on the premise of not increasing the production cost, the utilization rate of bamboo resources is improved, the economic benefits are increased and the environmental pollution is reduced.

Description

technical field [0001] The invention relates to the technical field of renewable biomass energy and renewable textile raw materials, in particular to a co-production preparation method of bamboo biomass fuel and bamboo pulp. Background technique [0002] Bamboo grows fast, can be planted once for multiple rotations, and has strong renewability. Bamboo fiber has stronger moisture absorption and air permeability than other fibers, making bamboo pulp more suitable for making summer clothes, sportswear and underwear. Bamboo pulp has been rapidly developed as a renewable textile raw material. The main technical indicators of bamboo pulp are as follows: 1. The cellulose content should not be less than 98%; 2. The hemicellulose content should be controlled below 2.0%; 3. The lignin content should not exceed 1.0%. The main components and contents of bamboo are: 40-60% cellulose content, 20-30% hemicellulose content, and 19-28% lignin content. During the process of bamboo pulping, ...

Claims

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Application Information

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IPC IPC(8): D21B1/30D21C1/06D21C3/02D21C1/08C10L5/44C10L1/02
CPCY02E50/10Y02E50/30
Inventor 陈荣朱小林
Owner SOUTH CHINA UNIV OF TECH
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