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Fuel and preparation method thereof

A fuel and weight technology, applied in the direction of fuel, solid fuel, biofuel, etc., can solve the problem of low utilization rate of sludge resources, and achieve the effect of promoting industrial structure adjustment, solving the shortage of biofuel, and broad application prospects.

Active Publication Date: 2015-02-04
COFCO GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a new fuel preparation method and the fuel prepared by the method in order to overcome the defect of low utilization rate of sludge in the prior art.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment is used to illustrate the preparation method of the fuel provided by the present invention and the prepared fuel.

[0032] The sludge (moisture content 87 weight percent) of 100 weight parts is mixed with the unslaked lime of 4 weight parts, then add 50 weight parts cassava dried grains (water content 45 weight percent) and Bacillus subtilis (Guangzhou City Huayuan biological Technology Co., Ltd.), based on every kilogram of cassava dried grains, the amount of Bacillus subtilis added is 180 million, and after mixing evenly, they are stacked into three-dimensional trapezoidal stacks (the area of ​​​​the upper bottom surface is 1 × 2m 2 , the area of ​​the bottom surface is 2×3m 2 , height is 1m) carry out stacking fermentation, turn over 3 times every day to keep stacking temperature to be about 60 ℃, when the water content of stacking material is 35% by weight, stop turning over, obtain fuel, record fermentation time is 6 day, the heat of combustion of ...

Embodiment 2

[0034] This embodiment is used to illustrate the preparation method of the fuel provided by the present invention and the prepared fuel.

[0035]The sludge (moisture content 86 weight percent) of 100 weight parts is mixed with the unslaked lime of 3 weight parts, then add 60 weight parts cassava dried grains (water content 40 weight percent) and bacillus natto (Huayuan, Guangzhou City Biotechnology Co., Ltd.), based on every kilogram of cassava dried grains, the amount of Bacillus natto added is 200 million, and after mixing evenly, they are stacked into a three-dimensional trapezoidal stack (the area of ​​​​the upper bottom surface is 1.5 × 2m 2 , the bottom surface area is 2.5×3m 2 , height is 0.8m) carry out stacking fermentation, turn over 2 times every day to keep stacking temperature to be about 60 ℃, when the water content of stacking material is 30% by weight, stop turning over, obtain fuel, record fermentation time as After 7 days, the heat of combustion of the fuel ...

Embodiment 3

[0037] This embodiment is used to illustrate the preparation method of the fuel provided by the present invention and the prepared fuel.

[0038] The sludge (moisture content 86 weight percent) of 100 weight parts is mixed with the unslaked lime of 5 weight parts, then add 40 weight parts of cassava dried grains (water content 50 weight percent) and Trichoderma (Guangzhou Huayuan Biological Technology Co., Ltd. Co., Ltd.), based on every kilogram of cassava dried grains, the addition amount of Trichoderma is 150 million, and after mixing evenly, they are stacked into a three-dimensional trapezoidal pile (the area of ​​​​the upper bottom surface is 1.5×2.5m 2 , the bottom surface area is 2.5×3.5m 2 , height is 1.2m) carry out stacking fermentation, turn over 4 times every day to keep stacking temperature to be about 60 ℃, when the water content of stacking material is 40% by weight, stop turning over, obtain fuel, record fermentation time as After 5 days, the heat of combustio...

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Abstract

The invention discloses a preparation method of a fuel. The preparation method is characterized by comprising mixing sludge, cassava dry grains, quicklime and high temperature-resistant aerobic bacteria uniformly, performing stacking fermentation on the obtained mixture until water content in the mixture is reduced to below 40 weight%, wherein the additional amount of the cassava dry grains is 30-60% weight% and the additional amount of the quicklime is 2-10 weight%, based on the weight of the sludge; the additional amount of the high temperature-resistant aerobic bacteria is 0.125-0.25 billion based on every kilogram cassava dry grain; the high temperature-resistant aerobic bacteria can at least endure a temperature of 50 DEG C. The invention also provides a fuel prepared by the above method. The preparation method of the fuel provided by the invention and the fuel prepared by the method solve the difficult problem of sludge resource utilization and have wide application prospects and significant economic benefits and social benefits.

Description

technical field [0001] The invention relates to a fuel preparation method and the fuel prepared by the method. Background technique [0002] The sludge produced in the process of urban sewage treatment and industrial production is the main source of sludge. There are more than 100 sewage treatment plants of different scales and different treatment levels in my country, and the amount of sludge produced every day is about 0.5-1.0% by volume of the sewage treatment volume. According to incomplete statistics, the national sewage discharge is 4.474×10 7 m 3 / d, the water content of the sludge is as high as 90% by weight, and it is difficult to recycle and dehydrate. Therefore, it is very difficult to treat the sludge and cause great damage to the ecological environment. Especially the aerobic sludge and anaerobic sludge produced in the process of cassava starch fermentation wastewater have brought enormous pressure to the environment. Therefore, how to deal with sludge, espec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/46C02F11/02
CPCY02E50/30Y02E50/10Y02W10/20
Inventor 邓立康凌成金黄加军杜金宝王利
Owner COFCO GROUP
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