Method for preparing solid briquette fuel from biomass liquefaction residue

A technology for solid molding fuel and liquefaction residue, which can be applied to waste fuel and other directions, can solve the problems that biomass liquefaction residue cannot be effectively treated, the quality of liquefied oil is not high, and the liquefaction efficiency is low. Problems, the effect of low energy consumption for crushing

Active Publication Date: 2017-01-04
HUNAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In summary, biomass liquefaction residues generally cannot be effectively treated, which is not only a waste of resources, but also harmful to the environment
If the liquefaction residue cannot be effectively treated, it will be a limiting factor for the development of the biomass liquefaction industry
Biomass supercritical liquefaction is an effective means of biomass liquefaction, but there are common problems such as low quality of liquefied oil and low liquefaction efficiency

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  • Method for preparing solid briquette fuel from biomass liquefaction residue

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Embodiment 1

[0032] A method for preparing solid briquette fuel from biomass liquefaction residue of the present invention, the process flow is shown in Figure 1, comprising the following steps:

[0033] (1) Roasting: pulverize the biomass to a length of ≤20 mm, and then roast the obtained pulverized biomass under anoxic conditions to obtain roasted biomass.

[0034] (2) Liquefaction: crush the roasted biomass to a particle size of 40 mesh to 80 mesh, then transport it to a high-pressure closed reactor, add a liquefaction solvent and a catalyst to the reactor, and raise the temperature of the reactor to 200°C to 350°C , pressurize to 5MPa-15MPa, carry out liquefaction reaction in air or inert atmosphere, the reaction time is 20min-80min, after the reaction is completed, biomass liquefaction oil and biomass liquefaction residue are obtained.

[0035] (3) Molding: biomass liquefaction residue (preferably dried biomass liquefaction residue), binder (preferably the binder obtained by mixing th...

Embodiment 2

[0048] A method for preparing solid briquette fuel from biomass liquefaction residue of the present invention comprises the following steps:

[0049] (1) Roasting: crush corn stalk raw materials with a moisture content not higher than 25% to a length of ≤20mm, and roast the crushed corn stalk raw materials in a circulating fluidized bed under nitrogen at a temperature of 200°C. The residence time (i.e. the roasting time, the same description for other embodiments) is 30min to obtain the roasted corn stalk raw material;

[0050] (2) Liquefaction: The roasted corn stalk raw material is further crushed to a particle size of 40-80 meshes, transported to a high-pressure closed reaction kettle under natural air, and after adding ether and potassium hydroxide accounting for 1.5% of the mass of the roasted corn stalk raw material, Raise the temperature of the reactor to 300°C and pressurize to 10MPa. The mass volume ratio of the roasted corn stalks and ether is 1:15g / mL, and keep at t...

Embodiment 3

[0054] A method for preparing solid briquette fuel from biomass liquefaction residue of the present invention comprises the following steps:

[0055] (1) Baking: crush the raw material of Castanopsis pruriens with a moisture content not higher than 25% to a length of less than 20mm, and place the crushed raw material of Castanopsis pruriens in a circulating fluidized bed under an industrial flue gas atmosphere with an oxygen content of less than 5%. Carry out roasting treatment in middle, the roasting temperature is 220 ℃, and residence time is 30min, obtains the raw material of roasted Castanopsis pruriens;

[0056] (2) Liquefaction: further pulverize the raw material of roasted Castanopsis pruriens to a particle size of 40-80 meshes, transport it to a high-pressure closed reaction kettle under an inert gas atmosphere (specifically nitrogen), add acetone and account for the mass of the raw material of roasted Castanopsis pruriens After adding 2% sodium carbonate, the temperat...

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Abstract

The invention discloses a method for preparing a solid molded fuel from biomass liquefaction residues. The method comprises the following steps of mixing the biomass liquefaction residues, a binder and an auxiliary fuel to obtain a mixed raw material, adjusting the moisture content of the mixed raw material to 10%-20% and then carrying out extrusion molding to obtain the solid molded fuel. By the method, the resourceful utilization of the liquefaction residues can be achieved, the obtained solid molded fuel has the advantages of high density, high strength, high heat value, strong anti-absorption capacity, low cost, energy conservation and environmental friendliness, the resourceful utilization of solid wastes and biomass is achieved and the problem of the treatment and disposal of the solid wastes and biomass can be effectively solved.

Description

technical field [0001] The invention belongs to the field of biomass energy and solid waste reuse, and in particular relates to a method for preparing solid briquette fuel from biomass liquefaction residue. Background technique [0002] Energy is an important material basis for economic and social development. With the large-scale development of industry, the amount of fossil fuels that can be exploited continues to decrease, and environmental problems are becoming more and more serious. Due to its huge quantity, environmental friendliness and CO 2 Features such as zero emission have become the research focus of various countries in recent years. However, because biomass has the characteristics of high moisture content, strong hydrophilicity, low energy density, difficult storage, uneven properties, seasonal fluctuations in production, and scattered production areas, the cost of collection, storage, and transportation increases, making large-scale utilization difficult. Bi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/48
CPCY02E50/30
Inventor 袁兴中蒋龙波梁婕陈晓红肖智华冷立健吴志斌李辉曾光明
Owner HUNAN UNIV
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