Method for preparing biomass lump coal

A biomass-to-mass ratio technology, used in biofuels, waste fuels, etc., can solve the problems of low calorific value and thermal efficiency, difficult storage and transportation, and high production costs, and achieve the effects of low cost, less slagging, and easy operation.

Inactive Publication Date: 2015-09-02
SHANXI TIANRUNFENG AGRI TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Straw, firewood, weeds, leaves, and organic fuels in urban domestic waste have the advantages of being flammable, less ash, and extremely low in sulfur, but due to their low calorific value and thermal efficiency, large volume, and difficult storage and transportation , fire prevention and other shortcomings, so in real life, they are usually burned and discarded to form waste
[0004] Chinese patent ZL201110088523.2 discloses a method for preparing biomass briquettes, which is to crush and mix raw coal and biomass, and then heat them and press them under molding pressure; this technical solution has the disadvantages that the product is not easy to shape and has low mechanical strength , the disadvantage of easy slagging; Chinese patent ZL201310117368.1 discloses a preparation method of biomass charcoal, which is to dry, pulverize and press the biomass material, then carry out pyrolysis and gasification reaction, and then mix with Coal slime and binder are mixed and pressed; this technical solution has the disadvantages of high production cost, easy slagging, low mechanical strength, and large smoke

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of biomass lump coal, the steps are:

[0026] (1) Crush: crush the straw into φ1-3mm, 10-300mm long thick filamentous straw, and crush firewood and branches into sawdust of 1-4mm;

[0027] (2) Softening: Mix the crushed thick filamentous straw and sawdust with a mass ratio of 2.3:1, soak in an aqueous solution containing 9% industrial alkali for 2.5 hours, then ferment at 80-90°C for 10 hours, and then stir at high speed Continue to ferment for 5h under the condition, and the raw material is softened;

[0028] (3) Adding auxiliary materials: Cow dung and combustible garbage in municipal solid waste are used as auxiliary materials, respectively crushed and added to the above-mentioned fermentation softening solution, soaked for 2 hours, and then fermented at 35-45°C for 8 hours. The mass ratio of added amount to sawdust is 0.2:0.4:1;

[0029] (4) Water filtration: Let the above-mentioned fermented solution stand still, and after filtering o...

Embodiment 2

[0033] A preparation method of biomass lump coal, the steps are:

[0034] (1) Crush: Crush the biomass raw materials separately, in which the straw is crushed and grows into φ1-3mm thick filamentous straw with a length of 10-30mm, and the firewood and branches are crushed into sawdust of 1-4mm;

[0035] (2) Softening: mix the crushed thick filamentous straw and sawdust with a mass ratio of 2.8:1, soak it in an aqueous solution containing 8% industrial alkali for 2 hours, then ferment at 80-90°C for 12 hours, and then mix it under high-speed stirring conditions. Continue to ferment for 6 hours, and the raw materials are softened;

[0036] (3) Adding auxiliary materials: Cow dung and combustible garbage in municipal solid waste are used as auxiliary materials, respectively crushed and added to the above fermentation softening solution, soaked for 2.5 hours, and then fermented at 35-45°C for 9 hours, of which cow dung and combustible garbage The mass ratio of the added a...

Embodiment 3

[0041] A preparation method of biomass lump coal, the steps are:

[0042] (1) Crush: crush the straw into φ1-3mm, 10-300mm long thick filamentous straw, and crush firewood and branches into sawdust of 1-4mm;

[0043] (2) Softening: Mix the crushed thick filamentous straw and sawdust with a mass ratio of 2.5:1, soak it in an aqueous solution containing 7% industrial alkali for 3 hours, then ferment at 80-90°C for 15 hours, and then mix it under high-speed stirring conditions. Continue to ferment for 7h, the raw materials are softened;

[0044] (3) Add auxiliary materials: use cow dung and combustible garbage in municipal solid waste as auxiliary materials, grind them separately and add them to the above fermentation softening solution, after soaking for 2 hours, continue to ferment at 35-45°C for 10 hours, of which the amount of cow dung and combustible garbage The mass ratio of added amount to sawdust is 0.3:0.3:1;

[0045] (4) Water filtration: Let the above-mention...

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PUM

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Abstract

The invention discloses a method for preparing lump coal by adopting biomass as raw material and relates to the preparation method for the lump coal. The method comprises the following steps: (1) crushing straws into thick-filament straws, and crushing firewood and twigs into sawdust; (2) mixing the thick-filament straws and the sawdust, then, soaking the mixture with an aqueous alkaline solution, then, fermenting the mixture, and then, continuing to ferment under the condition of high-speed stirring; (3) crushing cattle manure and combustible refuse in municipal domestic waste, then, adding the crushed material into a fermentation softening solution, soaking the crushed material, and then, fermenting for 6 to 10 hours; (4) standing the fermented solution, and filtering out moisture, thereby obtaining viscous biomass slurry; (5) crushing barks, then, adding water to the crushed barks, heating, and then adding starch; and (6) uniformly mixing coal slurry, a binder and the biomass slurry which are in the mass ratio of 1 to (2 to 3) to (40 to 45), and then, carrying out compacting molding at molding pressure, thereby obtaining the finished product. The method disclosed by the invention has the advantages that the method is low in cost and easy to operate, and the product is easy to mold, high in mechanical strength, difficult in slag-bonding and little in smoke dust.

Description

technical field [0001] The invention relates to a method for preparing lump coal, in particular to a method for preparing lump coal by using biomass as a raw material. Background technique [0002] Coal is an extremely thick layer of black humus accumulated on the ground from the branches, leaves and rhizomes of plants for millions of years. Due to the changes in the earth's crust, it is continuously buried underground, isolated from the air for a long time, and exposed to high temperature and high pressure. , a black combustible sedimentary rock formed after a series of complex physical and chemical changes and other factors. [0003] Straw, firewood, weeds, leaves, and organic fuels in urban domestic waste have the advantages of being flammable, less ash, and extremely low in sulfur, but due to their low calorific value and thermal efficiency, large volume, and difficult storage and transportation , fire prevention and other disadvantages, so in real life, they are usuall...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/44
CPCY02E50/10Y02E50/30
Inventor 刘果平
Owner SHANXI TIANRUNFENG AGRI TECH DEV CO LTD
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