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Novel straw composite fuel and preparation method thereof

A composite fuel and straw technology, applied in the direction of fuel, solid fuel, biofuel, etc., can solve the problems of secondary pollution of the environment and insufficient utilization of waste, and achieve the effect of solving secondary pollution.

Inactive Publication Date: 2012-07-18
李国庆 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Moreover, in the sewage treatment plant, a large amount of waste, namely sludge, is discharged, and these wastes cannot be fully utilized, causing secondary pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] A new type of straw composite fuel in this embodiment comprises the following raw materials by weight percentage: 40% of sewage treatment plant sludge, 40% of crop straw, 25% of coal powder, and 5% of coalification agent.

[0013] The 5% coalification agent contains: 0.5% sodium nitrate; 1.5% magnesium oxide; 0.4% calcium carbonate; 1% sodium hydroxide; 0.5% starch; 0.6% smoke suppressant, 0.5% sodium oxalate.

Embodiment 2

[0015] A new type of straw composite fuel in this embodiment comprises the following raw materials by weight percentage: 30% of sludge from a sewage treatment plant, 46% of crop straw, 20% of coal powder, and 4% of a coalification agent.

[0016] The 4% coalification agent contains: 0.6% sodium nitrate; 1% magnesium oxide; 0.1% calcium carbonate; 0.5% sodium hydroxide; 0.6% starch; 0.5% smoke suppressant, 0.7% sodium oxalate.

Embodiment 3

[0018] A new type of straw composite fuel in this embodiment comprises the following raw materials by weight percentage: 32% of sludge from a sewage treatment plant, 47% of crop straw, 13% of pulverized coal, and 8% of a coalification agent.

[0019] The 8% coalification agent contains: 0.8% sodium nitrate; 2% magnesium oxide; 0.2% calcium carbonate; 1% sodium hydroxide; 2% starch; 1.3% smoke suppressant, 0.7% sodium oxalate.

[0020] The preparation method of the straw composite fuel of the above-mentioned three embodiments, it comprises: according to the percentage by weight, the above-mentioned according to proportioning, the sludge of the raw material sewage treatment plant, crop straw, coal powder, coalification agent 1~5% 4 The raw materials are uniformly pulverized, stirred, and then placed for 5-8 days to recover, and then the molded fuel is produced; then it is baked and transformed at a baking temperature of 100-150 ° C, and air-dried for later use.

[0021] It has b...

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Abstract

The invention discloses a novel straw composite fuel which comprises the following raw materials in percentage by weight: 30-34 percent of sludge from a sewage treatment plant, 40-50 percent of crop straws, 10-30 percent of pulverized coal and 4-8 percent of coalification agents; and the preparation method of the novel straw composite fuel comprises the following steps of: uniformly smashing the four raw materials, i.e. the sludge from the sewage treatment plant, the crop straw, the pulverized coal and the coalification agent which are mixed, agitating and placing for 5-8 days to prepare formed fuel; and successively baking at a temperature of 100-150 DEG C, converting and air-drying for standby. The novel straw composite fuel has the beneficial effects commonly-used coal and other fuels can be replaced, and the combustion duration of the novel straw composite fuel is 1-2 hours; a heat value not only can be adjusted, but also can raise to 5000-6000 Joule; burnt ash can be degraded, directly taken as a raw material of a fast-acting organic fertilizer, returned to soil and is free from chemical poisoning; the chemical hazard of the sludge leaving the plant is effectively solved, the crop residues are treated, the secondary pollution of the sludge from the sewage treatment plant is solved; and the novel straw composite fuel has the advantages of environment friendliness, high efficiency and energy conservation, is suitable for industrial and civil use, and can be burnt and used in both an ordinary boiler or a heating stove.

Description

technical field [0001] The invention relates to the field of fuels, in particular to a novel straw composite fuel produced by comprehensive utilization of crop straws and sludge from a sewage treatment plant and a production method thereof. Background technique [0002] In our country, more than 700 million tons of crop straws are produced every year, but only about 10% are used as raw materials for the paper industry, construction industry and handicraft industry, and the remaining 600 million tons of straws are burned or discarded, which causes an acute environment for soil mineralization. pollute. [0003] Moreover, in the sewage treatment plant, a large amount of waste, that is, sludge, is discharged, and these wastes cannot be fully utilized, causing secondary pollution to the environment. Contents of the invention [0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a new type of straw composite fuel with high effi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/40C10L5/44C10L5/46
CPCY02E50/30Y02E50/10
Inventor 李国庆刘波
Owner 李国庆
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