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A method for extracting xylose from reed steam explosion to prepare furfural co-production fiberboard
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A fiberboard and reed technology, applied in the field of plant extraction, can solve the problems of uneven distribution of laccase enzyme activity, long microbial growth cycle, low production efficiency of pressing plate, etc. Effect
Active Publication Date: 2021-06-04
SICHUAN GOLDEN ELEPHANT SINCERITY CHEM CO LTD
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Although this method does not require an external adhesive, the production efficiency of the press plate is low due to the long microbial growth cycle, and the uneven distribution of laccase activity can easily lead to product instability.
Simultaneously these methods fail more valuable utilization of reed raw material
Method used
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Embodiment 1
[0077] A method of preparing xylose prepared by reed steam explosion, including the following steps:
[0078] 1) Raw reed (40 wt% or fresh reed) is fractured, cut into section, length 20-40mm;
[0079] 2) Through the wind conveyance, simultaneously separating impurities such as leaves, flowers and flute membranes, that is, the auto-explosive raw material;
[0080] 3) In the above-mentioned raw material, a concentration of 0.3% by weight of dilute sulfuric acid, solid-liquid ratio is 1: 0.8, mixed with a screw mixer; mixed for 30 minutes, press the press, so that the reed contains 45 wt%. In the steam haller, at 1.6 MPa steam pressure, at 180 ° C temperature, maintained time 120 seconds, instant blasting.
[0081] After the steam explosion, the material was washed with 10 times the mass of 70 ° C for hot water in a continuous washed puller, pressed dehydration to give solid cellulose, lignin, and a small amount of half-fibrin mixture;
[0082] 4) The above water lotion enters the f...
Embodiment 2
[0092] A method of preparing xylose prepared by reed steam explosion, including the following steps:
[0093] 1) Raw reeds are fractured, cut into sections, length 20-40mm;
[0094] 2) Through wind conveyance, simultaneous separation of impurities such as leafs, reed flowers and flute membranes, that is, the auto-burst raw material.
[0095] 3) Dilute sulfuric acid having a concentration of 0.3% (wt / wt) in the above-described steak, solid-liquid ratio 1: 0.8, mixed with a mixer, and the mixer may be a screw type or a roller type. Maintained for 30 minutes, performing press, so that the reed contains 45% by weight. The steam burster was sent in a 1.6 MPa steam pressure, at a temperature of 180 ° C, maintained time 120 seconds, instant blasting.
[0096] After the oil explosion, the material was washed with 10 times in a continuous washed puller, pressed by dehydration, to give solid cellulose, lignin, and a small amount of half-fibrin mixture.
[0097] 4) The above water lotion e...
Embodiment 3
[0107] Reeds are not treated with auto-explosion, and the fiberboard is produced according to conventional methods.
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Abstract
The invention belongs to the field of plant extraction and relates to high value-added utilization technology of reeds, in particular to a method for extracting xylose by steam explosion of reeds to prepare furfural co-production fiberboards. The method comprises the following steps: 1) the reed raw material is subjected to fracturing and sectioning; 2) impurity removal; 3) steam explosion treatment, and the treated material is washed with water; 4) the washing liquid enters a fractionation tower, and the formic acid and acetic acid are collected at the top of the tower. and furfural aqueous solution, and then use electrodialysis to separate formic acid, acetic acid and furfural aqueous solution; the reducing sugar mixture is obtained at the bottom of the tower; 5) microfiltration removes glucose after adding yeast and fermentation, and obtains a mixed solution containing xylose and arabinose; 6) reverse osmosis membrane Concentration; 7) system furfural. The remaining material was used to prepare fiberboard. The method degrades the pentosan in the raw material reed into xylose by steam explosion without adding acid, and recovers it by water extraction, which avoids acid pollution and has obvious economic benefits; the obtained xylose aqueous solution is obtained by solvent method The production of furfural has high yield, steam saving and less pollution.
Description
Technical field [0001] The present invention belongs to the field of plant extraction, involving reed height value utilization techniques, specifically a method of preparing a glymel-producing fiberboard for reed steam explosion. Background technique [0002] As the wood supply is increasing, it is more and more extensive attention to the use of wood alternative materials. Studies have shown that reeds can replace wood for production of artificial boards. my country has more sufficient reed resources, and the distribution is very broad, and the origin of the reed is more than 14. Previous reeds were used as papermaking raw materials, there were no other industrial purposes, and the reeds that were cut down were abandoned or incinerated, and there was a certain pressure to the environmental environment. Developing the reeds and the financing of the reeds, can alleviate the contradiction between wood supply, protect forest resources and ecological environments, while driving the ec...
Claims
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Application Information
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Patent Type & Authority Patents(China)
IPC IPC(8): C07D307/50D21B1/36B27N3/12B27N1/02
CPCB27N1/0209B27N3/12C07D307/50D21B1/36
Inventor 雷林郭志刚唐印刘朝慧李旭初武长安李刚王明权
Owner SICHUAN GOLDEN ELEPHANT SINCERITY CHEM CO LTD
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