Slurry fuel prepared by baking biomass and application thereof

A biomass and fuel technology, applied in liquid carbon-containing fuels, fuels, petroleum industries, etc., can solve the problems of limited large-scale use, low slurry concentration, poor grindability, etc., to improve calorific value and save coal resources. Effect

Inactive Publication Date: 2015-11-04
TIANJIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the biomass is composed of cellulose, hemicellulose, lignin, etc., and its grindability is extremely poor. It is a great challenge to mix it into the coal-water slurry tha

Method used

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  • Slurry fuel prepared by baking biomass and application thereof
  • Slurry fuel prepared by baking biomass and application thereof
  • Slurry fuel prepared by baking biomass and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The biomass solid fuel particles were crushed, baked at 290°C for 1 hour under an inert atmosphere, and solid and liquid products were collected. The solid product was crushed to a particle size below 3mm, and dried in an oven at 105°C for 3h. The dried samples were divided into two parts, and placed in an ND7 planetary ball mill to grind for 15 min and 30 min, respectively, to obtain coarse powder and fine powder with different particle size distributions. Mix equal masses of coarse powder and fine powder to obtain a graded solid product powder. Take 45 parts by weight of the powder and 15 parts by weight of the liquid product after baking, and mix them to obtain a solid-liquid mixture. Add 0.9 parts by weight sodium lignosulfonate and 39.055 parts by weight methyl alcohol in the mixture, after stirring for 15min with the rotating speed of 1200r / min in electric stirrer, then add 0.045 parts by weight sodium carboxymethylcellulose therein, with the same Stir at high s...

Embodiment 2

[0031] The biomass solid fuel particles were crushed, baked at 290°C for 1 hour under an inert atmosphere, and solid and liquid products were collected. The solid product was crushed to a particle size below 3mm, and dried in an oven at 105°C for 3h. The dried samples were divided into two parts, and placed in an ND7 planetary ball mill to grind for 15 min and 30 min, respectively, to obtain coarse powder and fine powder with different particle size distributions. Mix equal masses of coarse powder and fine powder to obtain a graded solid product powder. Take 40 parts by weight of the powder and 13.33 parts by weight of the liquid product after baking, and mix them to obtain a solid-liquid mixture. Add 0.8 parts by weight sodium lignosulfonate and 45.83 parts by weight methyl alcohol in the mixture, after stirring for 15min with the rotating speed of 1200r / min in the electric mixer, add 0.04 parts by weight sodium carboxymethylcellulose to it again, with the same Stir at high...

Embodiment 3

[0033] The biomass solid fuel particles were crushed, baked at 290°C for 1 hour under an inert atmosphere, and solid and liquid products were collected. The solid product was crushed to a particle size below 3mm, and dried in an oven at 105°C for 3h. The dried samples were divided into two parts, and placed in an ND7 planetary ball mill to grind for 15 min and 30 min, respectively, to obtain coarse powder and fine powder with different particle size distributions. Mix equal masses of coarse powder and fine powder to obtain a graded solid product powder. Take 35 parts by weight of the powder and 11.667 parts by weight of the liquid product after baking, and mix them to obtain a solid-liquid mixture. Add 0.7 parts by weight of sodium lignosulfonate and 52.598 parts by weight of methyl alcohol into the mixture, after stirring for 15min at a speed of 1200r / min in an electric mixer, add 0.035 parts by weight of sodium carboxymethylcellulose therein, with the same Stir at high spe...

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Abstract

The invention discloses a slurry fuel prepared by baking biomass and an application thereof. The slurry fuel comprises solid and liquid products resulting from low-temperature baking of the biomass, methanol and additives, wherein the additives comprise a dispersant and a stabilizer. The dispersant is sodium lignosulfonate, and the amount of the dispersant is 2% of the weight of a dry basis. The stabilizer is sodium carboxymethyl cellulose, and the amount of the stabilizer is 0.1% of the weight of the dry basis. According to the invention, the solid and liquid products after the low-temperature baking of the biomass are used are mixed to make slurry; a defect of traditional biomass coal water slurry is overcome; and a heat value of the obtained slurry fuel is improved by using methanol to replace water as a solvent. The optimum higher heat value can reach 22.80 MJ/kg and provides a new idea for alleviating the energy security problem caused by oil shortages.

Description

technical field [0001] The invention relates to the technical field of slurry fuel production, in particular to a slurry fuel prepared by using biomass torrefaction products. The invention is funded by the Tianjin Normal University Doctoral Fund (52XB1111). Background technique [0002] With the development of social economy and the continuous improvement of people's living standards, human consumption of energy is increasing day by day. my country's energy situation is rich in coal and poor in oil. In the past ten years, my country's oil consumption has shown a rapid growth trend. reliance is increasing. Coal water slurry is a coal-based liquid fuel that emerged in the 1970s. It is a mixture of coal, water and chemical additives formulated according to certain requirements. It has good fluidity and stability, is easy to store, and can be atomized and burned. It is a relatively cheap clean fuel with high combustion efficiency and low pollution. It can be used instead of heav...

Claims

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Application Information

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IPC IPC(8): C10L1/32C10L1/24C10L1/192
Inventor 曹映玉
Owner TIANJIN NORMAL UNIVERSITY
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