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Garbage derived fuel and preparation method thereof

A technology for waste-derived fuel and domestic waste, applied in biofuels, fuels, waste fuels, etc., can solve the problems of low calorific value of combustible gas, serious secondary pollution, etc., to improve energy density, reduce pollution, and inhibit dioxins. The effect of substance-like generation

Inactive Publication Date: 2008-07-09
CHINA UNIV OF MINING & TECH (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Secondary pollution is serious, and the combustible gas obtained from gasification has a low calorific value when used as fuel

Method used

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  • Garbage derived fuel and preparation method thereof

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Effect test

specific Embodiment approach

[0020] Its preferred embodiment of the refuse-derived fuel of the present invention comprises the following raw materials:

[0021] Domestic garbage 70-90 parts, can be 70, 75, 80, 85, 90 parts, etc.;

[0022] 10-30 parts of coal, can be 10, 15, 20, 25, 30 parts, etc.;

[0023] Calcium-containing substances 0.1-1 part, can be 0.1, 0.3, 0.5, 0.7, 1 part, etc.

[0024] The components of the above raw materials are parts by weight.

[0025] According to needs, the garbage-derived fuel can be in the form of pellets, blocks or honeycombs.

[0026] Its preferred embodiment of the preparation method of garbage derived fuel of the present invention is,

[0027] Using MSW as raw material, it is sorted, crushed, mixed, and by adding calcium-containing substances and coal powder, uniformly mixed and formed, and finally solid RDF is obtained. The RDF prepared by the invention is suitable for use in combustion, pyrolysis and gasification, and realizes efficient and clean energy utiliza...

specific Embodiment 1

[0036] The garbage-derived fuel is composed of the following components by weight: 89.5 parts by weight of pulverized domestic garbage, 10 parts by weight of coal powder, and 0.5 parts by weight of calcium-containing substances. The above-mentioned raw materials are sent to the mixer for mixing and mixing, and then sent to the double-roll forming machine, and finally processed into egg-shaped dense RDF with a particle size of 25mm.

[0037] After testing, the calorific value Q of the prepared garbage-derived fuel net , ad is 9716.3kJ / kg, which is 30% higher than that of MSW; the bulk density is obviously increased to 2360kg / m 3 , is 5.5 times that of MSW; under the molding pressure of 15MPa, the cold strength exceeds 66%, which is higher than the strength of MSW under the same pressure (59%), and the hot strength TS +6 and TS +3 5% and 20%, respectively, which are lower than the strength of MSW under the same pressure (11% and 31%); the crucible expansion number is about 1, ...

specific Embodiment 2

[0039] The garbage-derived fuel is composed of the following components by weight: 79.5 parts by weight of pulverized domestic garbage, 20 parts by weight of coal powder, and 0.5 parts by weight of calcium-containing substances. The above-mentioned raw materials are sent to the mixer for mixing and mixing, and then sent to the double-roll forming machine, and finally processed into egg-shaped dense RDF with a particle size of 25mm.

[0040] After testing, the calorific value Q of the prepared garbage-derived fuel net , ad is 11960.2kJ / kg, which is 60% higher than that of MSW; the bulk density is obviously increased to 2360kg / m 3 , is 5.5 times that of MSW; under the molding pressure of 15MPa, the cold strength exceeds 90%, which is much higher than the strength of MSW under the same pressure (59%), and the hot strength TS +6 and TS +3 18% and 40%, respectively, which are higher than the strength of MSW under the same pressure (11% and 31%); the crucible expansion number is a...

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Abstract

The invention discloses a refuse derived fuel and a process for preparation. The refuse derived fuel takes domestic refuse as main components and is added with the appropriate amount of coal and calcium materials. The process for preparation comprises following steps: sorting and crushing municipal domestic refuse, grinding the coal and pre-treating raw materials which contain calcium, then, proportioning according to certain proportion, adopting the high pressure molding technology without agglomerant, and preparing the refuse derived fuel with certain energy concentration, hot and cold intensity and technical properties. The refuse derived fuel can sufficiently utilize combustible constituents in the domestic refuse with simple manufacturing technique, low conversion cost, good combustion, pyrolysis and gasification performances and realize that the refuse is enabled to be resources and to be less and to be innocuous.

Description

technical field [0001] The invention relates to an environmental protection and energy technology, in particular to a garbage-derived fuel and a preparation method thereof. Background technique [0002] In recent years, garbage disposal has become a concern of the whole society. It is an urgent requirement from many aspects such as environment, economy and society to deal with municipal solid waste to reduce its capacity (volume), make it harmless and turn it into a resource. Among the known technologies of MSW (municipal solid waste) treatment, incineration has gradually become the main method of waste treatment at home and abroad. However, direct incineration has technical problems such as low efficiency, easy to produce secondary pollution of dioxins, and difficult to handle fly ash containing heavy metals. Relatively speaking, making MSW into RDF (refuse derived fuel) and then incinerating it is the most effective way to turn MSW into fuel and achieve reduction, harmle...

Claims

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Application Information

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IPC IPC(8): C10L5/46
CPCY02E50/10Y02E50/30
Inventor 解强武建军吴国光吕一波边炳鑫
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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