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Preparation method of biomass granular fuel

A biomass particle and fuel technology, applied in the field of biomass particle fuel preparation, can solve the problems of easy slagging, insufficient combustion, low ash melting point, etc. Effect

Inactive Publication Date: 2018-02-13
常州蓝旗亚纺织品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The technical problem to be solved by the present invention: Although the current biomass fuel has solved the problem of low ash melting point of the biomass solid molding fuel produced with straw as raw material, the biomass fuel is easy to slagging and ash during the combustion process , Insufficient combustion problem, the present invention provides a kind of preparation method of biomass particle fuel

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  • Preparation method of biomass granular fuel

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preparation example Construction

[0020] A preparation method of biomass particle fuel, the preparation method comprises the following steps:

[0021] (1) According to the mass ratio of 1-3:1, put the sorghum straw and cotton stalk into the pulverizer for pulverization, collect and collect the pulverized material, according to the mass ratio of 4-6:1:7-9, put the pulverized material, Ammonium nitrate and 1.1mol / L oxalic acid ethanol solution are mixed evenly, and placed in a container, at 60~70℃, pressurize the container to 2~4MPa, keep the pressure for 60~80min, and collect the mixture in the container;

[0022] (2) According to the mass ratio of 8 to 10:1, mix the mixture in the container and lithium chloride evenly, perform ultrasonic vibration at 1.5MHz for 40min, then put it into the reactor, add water-based polyurethane to the reactor, water-based The amount of polyurethane added is 4-6% of the mass of the mixture in the container, using nitrogen protection, heating up to 80-90 ° C, and stirring for 3-5 ...

Embodiment 1

[0026] A preparation method of biomass particle fuel, the preparation method comprises the following steps:

[0027] (1) According to the mass ratio of 1:1, put the sorghum straw and cotton stalk into the pulverizer for pulverization, and collect the pulverized material. L oxalic acid ethanol solution is mixed evenly, and placed in a container, at 60 ° C, the container is pressurized to 2MPa, the pressure is maintained for 60min, and the mixture in the container is collected;

[0028] (2) According to the mass ratio of 8:1, mix the mixture in the container and lithium chloride evenly, perform ultrasonic vibration at 1.5MHz for 40min, then put it into the reactor, add water-based polyurethane to the reactor, and the water-based polyurethane The amount added is 4% of the mass of the mixture in the container, nitrogen protection is used, the temperature is raised to 80°C, and the mixture is stirred for 3h;

[0029] (3) After stirring, discharge the material while it is still hot...

Embodiment 2

[0032] A preparation method of biomass particle fuel, the preparation method comprises the following steps:

[0033] (1) According to the mass ratio of 2:1, put the sorghum straw and cotton stalk into the pulverizer for pulverization, and collect the pulverized material. L oxalic acid ethanol solution is mixed evenly, and placed in a container, at 65 ° C, the container is pressurized to 3MPa, the pressure is maintained for 70min, and the mixture in the container is collected;

[0034] (2) According to the mass ratio of 9:1, mix the mixture in the container and lithium chloride evenly, perform ultrasonic vibration at 1.5MHz for 40min, then put it into the reactor, add water-based polyurethane to the reactor, and the water-based polyurethane The amount added is 5% of the mass of the mixture in the container, nitrogen protection is used, the temperature is raised to 85°C, and the mixture is stirred for 4h;

[0035] (3) After stirring, discharge the material while it is still hot...

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Abstract

The invention relates to the field of preparation of biomass granular fuel and specifically relates to a preparation method of biomass granular fuel. According to the preparation method provided by the invention, sorghum straw and cotton stalks are adopted as raw materials which are mixed with ammonium nitrate; in a high-pressure state, a gap appears in the joint between cellulose and lignin in the straw; then, the gap is expanded by ammonium nitrate and soaked in an ethanol oxalate solution; lithium chloride is adopted for catalysis; the cellulose is softened to reduce the forming pressure offorming particles from the fuel; meanwhile, after the cellulose is softened, part of the cellulose is separated from the lignin, and lithium ions are loaded in the formed gap; during combustion, thefuel combustion is more sufficient through catalysis of lithium ions; the softened cellulose can release more heat to promote complete combustion of the lignin; the problems of easy slag formation, ash accumulation and insufficient combustion are reduced in the combustion process; cracks in the fuel are increased, a ventilation channel is added, and combustion is accelerated.

Description

technical field [0001] The invention relates to the field of biomass particle fuel preparation, in particular to a preparation method of biomass particle fuel. Background technique [0002] Biomass pellet fuel is a fuel that compresses and forms biomass raw materials (mainly crop straw, agricultural product processing residues and forestry residues) after drying, crushing, blending and other pretreatments. The density of pellet fuel after forming is greater than 1000kg / m 3 , the combustion value reaches 3500 ~ 5000kcal / kg, the energy density is equivalent to that of medium bituminous coal, and the transportation and storage are convenient. [0003] At present, the granulation methods used in my country are all traditional production methods, including raw material drying, pressing, cooling, packaging, etc. This process needs to consume a lot of energy. First, in the process of pellet pressing, the pressure reaches 50-100MPa, the raw material deforms and heats up under high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/44C10L5/46
Inventor 刘芳尹凯欣
Owner 常州蓝旗亚纺织品有限公司
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