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Method for preparing biomass material with high heat calorific value through calcination coupling self-cross-linking of salix material

A biomass material and self-crosslinking technology, applied in the direction of biofuels, waste fuels, fuels, etc., can solve the problems of quality yield decline and heat value increase efficiency are not obvious

Inactive Publication Date: 2016-02-10
内蒙古农业大学材料科学与艺术设计学院
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Problems solved by technology

The disadvantage of this method is that the calorific value increase is not obvious at low temperature, and the quality yield decreases at high temperature

Method used

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  • Method for preparing biomass material with high heat calorific value through calcination coupling self-cross-linking of salix material

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Embodiment example

[0023] 500g of Salix salix wood which is naturally dried is longitudinally cut, axially rolled into fragments with a length of 1cm and an equivalent diameter of 3-5mm, and then immersed in a sodium hydroxide solution with a concentration of 10-20% for 1 hour. It was then rinsed, vacuum dried and further comminuted to 100 mesh. Disperse 50% ethanol solution according to the volume concentration of 30%, add excess formaldehyde, react at 60°C for 1.5 hours, then add excess propylene oxide to react for 1h, heat at 160°C for 2h in vacuum, and then Calcined at 260°C for 30 minutes under nitrogen (purity not less than 99%) atmosphere. Finally, it is ground to 80 mesh to obtain the high calorific value biomass energy material of Salix salix.

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Abstract

The invention discloses a method for preparing a biomass material with a high heat calorific value through calcination coupling self-cross-linking of a salix material. The method comprises the steps that the salix material is subjected to inorganic modification, and then soluble low molecules in the salix material are dissolved out; then, an organic coupler is used for reacting with chemical components of the salix material under a certain condition, and thus free radicals on the surfaces of amorphous regions and crystalline regions of cell walls of the salix material are associated; then oxygen isolation calcinations are carried out, part of the chemical components of the salix material are softened, embedded and carbonized at a certain temperature, and thus the calorific value of the salix material is increased. The calorific value of the biomass material obtained through the method for preparing the biomass material with the high heat calorific value through calcination coupling self-cross-linking of the salix material is increased by 88.5%, and the biomass material is low in moisture absorption rate and good in abrasiveness.

Description

【Technical field】 [0001] The invention relates to a method for preparing a novel high-calorific-value biomass material, in particular, the invention relates to a method for preparing a unique high-calorific-value biomass material through coupled self-crosslinking. 【Background technique】 [0002] Salix salix is ​​a desert control plant widely planted in the western part of Inner Mongolia. It is a perennial shrub with the characteristics of root storage and stubble rejuvenation. It must be stubbled in 3 to 5 years, just like leeks. If it is not stubbled, it will be killed. Salix twigs after stubble are Salix wood. [0003] There are basically three uses of these willow materials. One is to use them for willow weaving, which is used in a small amount. With the decline of willow weaving technology, this use is basically decadent; instead, the artificial board technology is made of salix wood, that is, the salix wood is processed into shavings or fibers to make particleboard or ...

Claims

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Application Information

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IPC IPC(8): C10L5/44C10L9/00
CPCY02E50/10Y02E50/30
Inventor 薛振华李正兰张龙梁宇飞
Owner 内蒙古农业大学材料科学与艺术设计学院
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