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High-value utilization of wood-based biomass and application of wood-based biomass in preparation of biological asphalt

A technology of bio-asphalt and biomass, which is applied in the direction of bio-fuel, building structure, special form of dry distillation, etc., can solve the problems of low utilization efficiency of wood-based biomass, restrictions on the promotion and application of bio-asphalt, and the complexity of bio-asphalt preparation technology. Achieve high utilization rate of solid waste resources, significant economic and social benefits, reduce environmental pollution and energy consumption

Pending Publication Date: 2022-02-08
山西省交通科技研发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the application process of bio-asphalt, there are problems such as low utilization efficiency of wood-based biomass and complicated preparation technology of bio-asphalt, which seriously limit the promotion and application of bio-asphalt.

Method used

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  • High-value utilization of wood-based biomass and application of wood-based biomass in preparation of biological asphalt
  • High-value utilization of wood-based biomass and application of wood-based biomass in preparation of biological asphalt
  • High-value utilization of wood-based biomass and application of wood-based biomass in preparation of biological asphalt

Examples

Experimental program
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Effect test

Embodiment 1

[0015] The high-value utilization of wood-based biomass in this example refers to the hydrothermal liquefaction of wood-based biomass with an average particle size of 2 mm in a high-temperature and high-pressure reactor, using deionized water as a solution, and choosing a residence time of 30 minutes and a temperature of 280 °C. , with a pressure of 6.5MPa to obtain a water-containing hydrothermal liquefaction product (a mixture of bio-oil and biochar), and then the hydrothermal liquefaction product was simply baked (dried at 105°C for 12 hours) to remove moisture to obtain a dry hydrothermal liquefaction product. 100% hydrothermal liquefaction products can replace petroleum asphalt, forming a high-value utilization method of wood-based biomass.

[0016] The proportioning of wood-based biological asphalt in the present embodiment is: 10% hydrothermal liquefaction product, 85% No. 70 petroleum pitch, 5% solubilizer trimethylbenzene.

[0017] The preparation method of wood-based...

Embodiment 2

[0022] The high-value utilization of wood-based biomass in this example refers to the hydrothermal liquefaction of wood-based biomass with an average particle size of 2 mm in a high-temperature and high-pressure reactor, using deionized water as a solution, and choosing a residence time of 30 minutes and a temperature of 280 °C. , with a pressure of 6.5MPa to obtain a water-containing hydrothermal liquefaction product (a mixture of bio-oil and biochar), and then the hydrothermal liquefaction product was simply baked (dried at 105°C for 12 hours) to remove moisture to obtain a dry hydrothermal liquefaction product. 100% hydrothermal liquefaction products can replace petroleum asphalt, forming a high-value utilization method of wood-based biomass.

[0023] The proportioning of wood-based biological asphalt in the present embodiment is: 20% hydrothermal liquefaction product, 75% No. 70 petroleum pitch, 5% solubilizer trimethylbenzene.

[0024] The application method of wood-based...

Embodiment 3

[0029] The high-value utilization of wood-based biomass in this example refers to the hydrothermal liquefaction of wood-based biomass with an average particle size of 2 mm in a high-temperature and high-pressure reactor, using deionized water as a solution, and choosing a residence time of 30 minutes and a temperature of 280 °C. , with a pressure of 6.5MPa to obtain a water-containing hydrothermal liquefaction product (a mixture of bio-oil and biochar), and then the hydrothermal liquefaction product was simply baked (dried at 105°C for 12 hours) to remove moisture to obtain a dry hydrothermal liquefaction product. 100% hydrothermal liquefaction products can replace petroleum asphalt, forming a high-value utilization method of wood-based biomass.

[0030] The proportioning of wood-based biological asphalt in the present embodiment is: 30% hydrothermal liquefaction product, 65% No. 70 petroleum pitch, 5% solubilizer hydrogenated castor oil.

[0031] The application method of woo...

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Abstract

The invention discloses high-value utilization of wood-based biomass and application of the wood-based biomass in preparation of biological asphalt. According to the method, the wood-based biomass is subjected to hydrothermal liquefaction to prepare bio-oil and biochar, and then the bio-oil and the biochar are used for partially replacing petroleum asphalt to prepare the bio-asphalt. The high-value utilization of the wood-based biomass has the characteristics that the bio-oil yield is high, the ratio of the bio-oil to the biochar can be controlled by hydrothermal conditions, the bio-oil and the biochar can be utilized in a gradient manner, and the wood-based biomass is green, environment-friendly, renewable and the like. The wood-based biological asphalt prepared by the method has the advantages of high solid waste resource utilization rate, capability of partially replacing petroleum asphalt and capability of reducing environmental pollution and energy consumption. The biological asphalt can meet the use requirements of road pavement, negative carbon emission of a biomass hydrothermal product in the whole life cycle is realized, the use pressure of petroleum asphalt is greatly relieved, forestry waste is fully utilized, emission of volatile organic compounds of the asphalt is reduced, and remarkable economic and social benefits are generated.

Description

technical field [0001] The invention belongs to the technical field of biomass hydrothermal liquefaction and bio-asphalt preparation, and in particular relates to the high-value utilization of wood-based biomass and its application in the preparation of bio-asphalt. Background technique [0002] With the acceleration of the globalization process and the increasing energy consumption, the human demand for energy is increasing. At the same time, due to the sharp decline in the storage of non-renewable energy such as oil and coal, human demand for sustainable alternative energy materials imminent. The development of bio-energy, especially bio-asphalt, has attracted the attention of researchers at home and abroad. Bio-asphalt has a great application prospect in the construction and maintenance of asphalt pavement instead of petroleum asphalt. However, in the application process of bio-asphalt, there are problems such as low wood-based biomass utilization efficiency and complex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/02C08L95/00C08L91/00C08K3/04
CPCC10B53/02C08L95/00C08L91/00C08K3/04Y02E50/10
Inventor 周新星孔繁盛张艳聪边伟付玉强荣亚鹏吕子龙雷志军孟利强刘澔
Owner 山西省交通科技研发有限公司
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