Biological clean type composite fuel and preparation method thereof

A composite fuel, clean technology, applied in the fields of biochemical equipment and methods, microorganism-based methods, fuels, etc., can solve the problems of low desulfurization efficiency and long operation cycle, achieve good ecological benefits, simple preparation process, repeatability Good results

Inactive Publication Date: 2017-06-20
UNIV OF JINAN +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In order to solve the above-mentioned problems, aiming at the shortcomings of coal desulfurization technology such as long operation period and low desulfurization efficiency in the existing coal biological desulfurization process, the present invention combines the advantages of biological desulfurization technology and biomass briquette technology to propose a biological Clean briquette composite fuel and preparation method thereof

Method used

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  • Biological clean type composite fuel and preparation method thereof
  • Biological clean type composite fuel and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0042] (1) Crush 100 parts of lean coal until the particle size is less than 10mm, add 2 parts of water and 1 part of microbial bacterial solution, mix well, and accumulate and react at room temperature for 6 days;

[0043] (2) washing the lean coal after the stacking reaction in step (1) with water while stirring, drying after filtering, so that the moisture content is less than 20%, and obtaining the desulfurized coal after the microbial bacterial liquid treatment;

[0044] (3) Add 20 parts of cottonwood stalks and 5 parts of water to the desulfurized coal treated with the microbial liquid in step (2), the length of the cottonwood stalks is 10-15 mm, stir and mix well, and pass through the briquette forming equipment Extrude for 40 minutes at a temperature of 180°C and a pressure of 15 tons, so that the moisture content is less than 9%;

[0045] (4) The briquettes extruded in step (3) are cooled and demolded to obtain a bio-clean briquette composite fuel product.

[0046] A...

Embodiment 2

[0049] (1) Grinding 120 parts of lean coal until the particle size is below 9mm, adding 3 parts of water and 1.4 parts of microbial bacterial solution, mixing, and stacking reaction at room temperature for 7 days;

[0050] (2) washing the lean coal after the stacking reaction in step (1) with water while stirring, drying after filtering, so that the moisture content is less than 20%, and obtaining the desulfurized coal after the microbial bacterial liquid treatment;

[0051] (3) Add 35 parts of cottonwood stalks and 8 parts of water to the desulfurized coal treated with the microbial liquid in step (2), the length of the cottonwood stalks is 10-15 mm, stir and mix well, and pass through the briquette forming equipment Extrude for 50 minutes at a temperature of 200°C and a pressure of 20 tons, so that the moisture content is less than 9%;

[0052] (4) The briquettes extruded in step (3) are cooled and demolded to obtain a bio-clean briquette composite fuel product.

[0053] Ac...

Embodiment 3

[0056] (1) Grinding 80 parts of lean coal until the particle size is below 15mm, adding 4 parts of water and 1.6 parts of microbial bacterial solution, mixing, and stacking reaction at room temperature for 10 days;

[0057] (2) washing the lean coal after the stacking reaction in step (1) with water while stirring, drying after filtering, so that the moisture content is less than 20%, and obtaining the desulfurized coal after the microbial bacterial liquid treatment;

[0058] (3) Add 15 parts of cottonwood stalks and 3 parts of water to the desulfurized coal treated with microbial liquid in step (2). Extrude for 40 minutes at a temperature of 180°C and a pressure of 15 tons, so that the moisture content is less than 9%;

[0059] (4) The briquettes extruded in step (3) are cooled and demolded to obtain a bio-clean briquette composite fuel product.

[0060] According to the determination method of total sulfur in coal specified in GB / T 214-2007, the total sulfur content of the ...

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Abstract

The invention relates to a biological clean type composite fuel and a preparation method thereof. The fuel is prepared from the following raw materials in parts by weight: 80-150 parts of raw coal, 15-45 parts of plant straws, 5-20 parts of water and 1-2 parts of a microbial bacteria solution. The preparation method specifically comprises the following steps of: treating the raw coal with the microbial bacteria solution; converting sulfur in the raw coal into a salt through an accumulating reaction; removing sulfur in the raw coal through a coal washing process to obtain desulfurized coal with a relatively low sulfur content; and then extruding and forming the desulfurized coal and the plant straws through molded coal forming equipment at a certain temperature and pressure to obtain the biological clean type composite fuel. By combining a biological desulphurization technology with a biomass molded coal manufacturing technology, the obtained product has the advantages of being high in compressive strength, low in full sulfur content and high in heat of combustion. More importantly, the environmental pollution problem in the coal combustion process is solved, and the fuel has a good ecological benefit; and meanwhile, preparation of the biological clean type composite fuel product opens up a novel path for utilization of biomass energy sources such as straws.

Description

technical field [0001] The invention relates to a biological clean briquette composite fuel and a preparation method thereof. Background technique [0002] Energy is a necessary condition for the development of industrial and agricultural production in modern society, the driving force of economic development, and the material basis of modern civilization. For a long time to come, fossil energy will occupy an important position in the energy structure of countries all over the world. From the perspective of energy consumption structure, developed countries mainly rely on oil and gas, while developing countries rely mainly on abundant coal resources. [0003] my country is the largest coal production and consumption country in the world. my country's coal consumption accounts for more than 75% of the primary energy production and consumption structure, and it is increasing year by year. For a long time to come, coal will still be the most important part of my country's prim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/00C10L5/02C10L5/44C10L9/10C12N1/20C12R1/38C12R1/01
Inventor 杨成李福利俞正南
Owner UNIV OF JINAN
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