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Application of biomass oil as asphalt

A technology of biomass oil and biomass, which is applied in the processing of tar pitch/petroleum pitch/natural pitch, processing tar pitch/petroleum pitch/natural pitch through mixed fractions, and the petroleum industry, which can solve product cracks and low sulfur content , affect product quality and other issues, to achieve the effect of low sulfur content, high thermal stability, suitable for popularization and application

Active Publication Date: 2019-09-20
台州立拓能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] a. Lower sulfur content: This is because sulfur dioxide is easy to produce when carbon products containing sulfur are baked at high temperature. Since graphite products are usually extruded and then baked, the gas expansion will cause the internal combustion of the product. Cracks, thus affecting product quality

Method used

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  • Application of biomass oil as asphalt
  • Application of biomass oil as asphalt
  • Application of biomass oil as asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of preparation method of pine bio-blended asphalt:

[0033] 1) Add 10 kg of pine wood particles (the water content of pine wood particles is less than 8% and the particle size is less than 25mm), 10 kg of water, 30 kg of tetrahydrofuran and 300 g of concentrated sulfuric acid in the reaction kettle and mix well (the mass concentration of concentrated sulfuric acid is 98%). Under a nitrogen atmosphere, the reactor was stirred and heated to 180°C for 20 minutes. After confirming that the cellulose, hemicellulose, and lignin in the pine wood particles were liquefied and hydrolyzed, 1 kg of 50% w / w calcium hydroxide slurry was added. Neutralize the sulfuric acid in the solution, and filter to obtain 51 kilograms of reaction liquid;

[0034] 2) Mix 50 kg of the reaction solution obtained in step 1) with 5 kg of coal tar medium-temperature pitch in a ratio of 10:1 to obtain a uniform and stable intermediate mixture, and then distill and concentrate to remove THF solvent,...

Embodiment 2

[0040] A kind of preparation method of pine bio-asphalt

[0041] 1) Add 5 kg of pine wood particles (the water content of pine wood particles is less than 8%, and the particle size is less than 25mm), 5 kg of water, 10 kg of acetone and 200 g of concentrated sulfuric acid in the reaction kettle and mix well (the concentration of concentrated sulfuric acid is 98%) . Under a nitrogen atmosphere, stir and heat the reactor to 170°C for 20 minutes. After confirming that the cellulose, hemicellulose, and lignin in the pine wood particles have been liquefied and hydrolyzed, add 1 kg of 50% w / w calcium hydroxide slurry Neutralize the sulfuric acid in the solution, and filter to obtain the biomass oil 20 reaction solution;

[0042] 2) Take 15 kg of the reaction liquid obtained in step 1) and concentrate it through distillation to remove acetone solvent, water and light components (distillation temperature is 60°C, distillation operating pressure is 400mbar), and 4 kg of bio-asphalt is...

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Abstract

The invention discloses an application of biomass oil as asphalt. The application comprises the following steps: distilling and concentrating a reaction solution, obtained by carrying out hydrolysis reaction on biomass in an acidic solution, to remove a solvent to obtain a biomass hydrolysis product, namely, the asphalt product. Application process of biomass oil as asphalt can also be as follows: the biomass oil is used for preparing the biological blended asphalt by carrying out hydrolysis reaction on biomass in an acidic solution to obtain a reaction solution, mixing the reaction solution with petroleum asphalt, coal tar asphalt or natural asphalt, heating and emulsifying the mixture, and performing distillation concentration to remove a solvent to obtain a mixture of the biomass hydrolysate and the petroleum asphalt, the coal tar asphalt or the natural asphalt, thus obtaining the bio-blended asphalt product. The biomass hydrolysate obtained by the invention can be used as asphalt or used for preparing asphalt; the sulfur content of the biomass hydrolysate is far lower than that of coal tar pitch, petroleum pitch and natural pitch, so that the bio-blended asphalt obtained by mixing according to the method is low in sulfur content, satisfies the green and environment-friendly requirements and is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of biomass treatment, and in particular relates to the application of biomass oil as asphalt. Background technique [0002] Generally, there are several treatment methods for agricultural biomass waste: 1) Returning to the field through on-site incineration, which is common in areas with relatively backward on-site equipment. waste disposal problem. On-site burning and returning to the field produces a large amount of smoke and dust, which seriously pollutes the environment. Now this treatment method has been banned in many areas; 2) Biomass power generation, agricultural biomass waste is directly put into power generation boilers. Although this method solves the pollution problem caused by burning in situ, the utilization rate of biomass is low. 3) Biomass pyrolysis method (such as Chinese patent 201210048116.3, biomass pyrolysis method generates biomass tar): Under anaerobic conditions, it is treated at ...

Claims

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Application Information

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IPC IPC(8): C08L91/00C08L95/00C10C1/04C10C3/00
CPCC08L91/00C08L2555/62C10C1/04C10C3/00C10C3/005C08L95/00
Inventor 陈都李振宁
Owner 台州立拓能源有限公司