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Biomass granular fuel and preparation method thereof

A technology of biomass particles and biomass raw materials, which is applied in the directions of biofuel, waste fuel, fuel, etc., can solve the problems of short service life, low combustion efficiency and high ash content of boilers, achieve stable combustion rate, prolong combustion time, Stable bonding effect

Inactive Publication Date: 2020-12-22
桃江县新辉生物质颗粒有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the content of ash and slag in the combustion of biomass particles prepared in the present invention is high, easy to slagging, low combustion efficiency, and short service life of the boiler

Method used

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  • Biomass granular fuel and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036]A kind of biomass pellet fuel, which is to dry and crush 100kg of biomass raw materials to obtain powder, then add 2kg of lignin-based binder to the powder, stir it evenly through a mixer, and then pass mechanical compression, granulation and cooling later income. Wherein, the moisture content of the powder is ≤20%, the particle size of the powder is ≤0.5mm, and the particle size of the lignin-based binder is 0.03-0.06mm.

[0037] The preparation method of the above-mentioned lignin-based binder comprises the following specific steps:

[0038] (1) adjusting the pH value of the papermaking waste liquid to 3.5-6 with a hydrochloric acid solution to obtain a suspension containing lignin particles;

[0039] (2) Dissolve 0.2kg of urea in water, then add 1kg of polyacrylic acid, 1.2g of ammonium persulfate and 2.4g of glutaraldehyde, stir evenly, and adjust the pH value to 7-8 with a mass fraction of 50% sodium hydroxide solution , slowly raising the temperature to 60-70°C, ...

Embodiment 2

[0044] A kind of biomass granular fuel, which is to dry and crush 100kg of biomass raw materials to obtain powder, then add 5kg of lignin-based binder to the powder, stir it evenly through a mixer, and then pass mechanical compression, granulation and cooling later income. Wherein, the moisture content of the powder is ≤20%, the particle size of the powder is ≤0.5mm, and the particle size of the lignin-based binder is 0.03-0.06mm.

[0045] The preparation method of the above-mentioned lignin-based binder comprises the following specific steps:

[0046] (1) adjusting the pH value of the papermaking waste liquid to 3.5-6 with a hydrochloric acid solution to obtain a suspension containing lignin particles;

[0047] (2) Dissolve 0.5kg of urea in water, then add 1kg of polyacrylic acid, 4.5g of ammonium persulfate and 7.5g of glutaraldehyde, stir evenly, and adjust the pH value to 7-8 with a mass fraction of 50% sodium hydroxide solution , slowly raising the temperature to 60-70°...

Embodiment 3

[0052] A kind of biomass granular fuel, which is to dry and pulverize 100kg of biomass raw materials to obtain powder, then add 3.5kg of lignin-based binder to the powder, stir evenly through a mixer, and then pass mechanical compression, granulation and obtained after cooling. Wherein, the moisture content of the powder is ≤20%, the particle size of the powder is ≤0.5mm, and the particle size of the lignin-based binder is 0.03-0.06mm.

[0053] The preparation method of the above-mentioned lignin-based binder comprises the following specific steps:

[0054] (1) adjusting the pH value of the papermaking waste liquid to 3.5-6 with a hydrochloric acid solution to obtain a suspension containing lignin particles;

[0055] (2) Dissolve 0.4kg of urea in water, then add 1kg of polyacrylic acid, 3.2g of ammonium persulfate and 4.8g of glutaraldehyde, stir evenly, and adjust the pH value to 7-8 with a mass fraction of 50% sodium hydroxide solution , slowly raising the temperature to 6...

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Abstract

The invention discloses a biomass granular fuel and a preparation method thereof, and relates to the field of development and utilization of waste biomass resources. The biomass granular fuel disclosed by the invention is prepared by the following steps: drying and crushing a biomass raw material to obtain powder, adding the lignin-based binder and the additive into the powder, uniformly stirringby virtue of a stirrer, mechanically compressing, granulating and cooling, thereby obtaining the biomass granular fuel. The lignin-based binder is obtained by adding a polyacrylic acid / urea polymer into a suspension containing lignin particles, adjusting the pH value, stirring, filtering, drying and crushing. According to the biomass granular fuel provided by the invention, by adding the lignin-based binder, the forming rate of the biomass granular fuel is increased, the biomass granular fuel is not easy to break in the transportation process, the combustion speed is stable, slag bonding is not liable to generate in the combustion process, the combustion efficiency is improved, the service life of a combustion device is prolonged, and the environmental pollution is reduced.

Description

technical field [0001] The invention belongs to the field of development and utilization of waste biomass resources, and in particular relates to a biomass particle fuel and a preparation method thereof. Background technique [0002] With the emergence of the energy crisis worldwide and the increasingly serious environmental problems caused by the massive use of fossil fuels, countries around the world are paying more and more attention to the development and utilization of biomass energy. my country is a big country of solid biomass energy. Biomass fuels such as various crop straws and forest wastes are extremely rich, but they have not been effectively utilized for a long time. In recent years, due to the shortage of energy resources and the increasingly prominent problems of ecological environment protection, the development of solid biomass briquettes has attracted people's attention. [0003] Biomass pellets are processed by cold-state compaction of pulverized biomass ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/44
CPCC10L5/442C10L5/445Y02E50/10Y02E50/30
Inventor 江建中
Owner 桃江县新辉生物质颗粒有限公司
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