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Straw biogas residue biomass coal briquette and preparation method thereof

A biomass and biogas residue technology, applied in the direction of biofuel, waste fuel, fuel, etc., can solve the problems of boiler corrosion, ash content increase, high production cost, etc., achieve the effects of reducing moisture, efficient and clean utilization, and solving difficult disposal effects

Inactive Publication Date: 2017-05-24
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Patent 103265989A discloses a biomass briquette and its processing technology, which is to prepare biomass briquette by mixing and compressing alkali-modified biomass, activated sludge, modified magnesium smelting slag and pulverized coal, but the The lye used in the invention is sodium hydroxide, which will increase the ash content, increase the production cost, and the alkali metal oxide will corrode the boiler during the combustion process.

Method used

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  • Straw biogas residue biomass coal briquette and preparation method thereof
  • Straw biogas residue biomass coal briquette and preparation method thereof
  • Straw biogas residue biomass coal briquette and preparation method thereof

Examples

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Embodiment 1

[0040] This embodiment provides a method for preparing straw biogas residue biomass briquettes, which includes the following steps:

[0041](1) Crush the corn stalks until the particle size is less than 3cm, the feed amount is 1.2kg, put it into 8L biogas slurry and soak it for 2h, and then add it to the dry fermentation chamber of the garage-type anaerobic fermentation reactor, from Back-spray the biogas slurry on the top, the initial spray volume is 1.25L / (kg straw 1.5h), the system temperature is 38±1°C, the hydraulic retention time is 28 days, the initial C / N is 25, and the pH is not adjusted;

[0042] (2), the weight of each biomass briquette raw material is 10g, wherein, lignite particle size is less than 20 mesh, the addition amount is 8g, the particle size of fermented corn stalk biogas residue is 20-40 mesh, the addition amount is 2g, molding The pressure is 8MPa, the holding time is 120s, and the molding temperatures are 120°C, 140°C and 160°C respectively.

[0043]...

Embodiment 2

[0046] This embodiment provides a method for preparing straw biogas residue biomass briquettes, which includes the following steps:

[0047] (1) Crush the corn stalks to a particle size of less than 3cm, feed 2kg, soak in 12L biogas slurry for 2 hours, then add them to the dry fermentation chamber of the garage-type anaerobic fermentation reactor, and carry out from the top For back spraying, the system temperature is 38±1°C, the hydraulic retention time is 28 days, the initial C / N is 25, and the pH is not adjusted;

[0048] In this example, three anaerobic fermentation reactions were carried out, wherein the amount of biogas slurry sprayed during the three anaerobic fermentations was 0.75L / (kg straw for 1.5h), 0.9L / (kg straw for 1.5h), and 1L / (kg straw 1.5h), the biogas residues obtained after three anaerobic fermentation reactions are respectively recorded as biogas residues A-C, and the biogas residues A-C are mixed as raw materials for preparing straw biogas residue biomas...

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Abstract

The invention provides a straw biogas residue biomass coal briquette and a preparation method thereof. The method comprises the following steps: firstly, carrying out anaerobic fermentation on crushed straws to obtain biogas residues, and crushing the dried biogas residue after drying; secondly, uniformly mixing the crushed biogas residues obtained in the first step with lignite, and carrying out hot press molding on a mixture to obtain the straw biogas residue biomass coal briquette. According to the straw biogas residue biomass coal briquette provided by the invention, the biomass coal briquette is prepared by compression molding of the mixture of the crushed biogas residues and the lignite; the water content of the lignite can be reduced, and energy consumption and equipment loss in the processing process can be effectively reduced; moreover, no binder needs to be added in the preparation process. The straw biogas residue biomass coal briquette prepared by the preparation method has the advantages of higher compressive strength, fall strength and water immersion strength, higher analysis basic heating value, lower water content and no dispersion after being immersed into water for 24 hours.

Description

technical field [0001] The invention relates to a straw biogas slag biomass briquette and a preparation method thereof, and belongs to the technical field of resource utilization of clean coal and agricultural waste. Background technique [0002] According to 2015 BP World Energy Statistics, China has been the world's largest primary energy consumer for four consecutive years, and coal accounts for 64% of primary energy consumption. During the "13th Five-Year Plan" period, fossil energy is still the main force in the entire energy structure. Coal is my country's dominant energy source and an important basis for ensuring the country's energy supply. In the short term, coal will still occupy the main energy position. [0003] According to BP energy statistics, by the end of 2015, the total global coal reserves were more than 891.5 billion tons, and my country's coal reserves were 114.5 billion tons, accounting for 12.8% of the world's total coal reserves. Due to the continuou...

Claims

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Application Information

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IPC IPC(8): C10L5/04C10L5/44
CPCY02E50/10Y02E50/30C10L5/04C10L5/445C10L2290/26C10L2290/30
Inventor 李叶青闫芳周红军江皓钱名宇
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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