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Novel sludge composite fuel and preparation method thereof

A composite fuel and sludge technology, applied in the direction of fuel, solid fuel, biofuel, etc., can solve the problems of no stabilization, harmless resource disposal, secondary pollution, and environmental hazards, and save sludge dehydration , Reduce workload and reduce pollution

Active Publication Date: 2014-12-10
深圳市固废环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These solid wastes and biomass resources are not stabilized, harmless, and recycled, which not only endangers the environment, but also wastes resources, and is more likely to cause "secondary pollution" to the human living environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment one: the composition of the sludge compound fuel that the present invention develops comprises 10 parts of ammonium nitrate, 200 parts of sludge or lime mud, 200 parts of coal dust, 5 parts of potassium permanganate, 3 parts of ferrous sulfate, 10 parts of For sodium chloride, the above parts all represent parts by mass.

[0014] The method for preparing composite fuel is as follows: (1) Evenly mix 10 parts of ammonium nitrate, 200 parts of sludge or white mud, 200 parts of coal powder, 5 parts of potassium permanganate, 3 parts of ferrous sulfate, and 10 parts of sodium chloride , mechanically stirred at room temperature for 30 minutes, and the above parts all represent parts by mass;

[0015] (2) Extruding the processed mixture in (1) to obtain a finished composite fuel product. Using the above-mentioned fuel test, its calorific value can reach about 3000 calories, and it is fully combustible and easy to burn when in use.

Embodiment 2

[0016] Embodiment two: the new fuel that the present invention develops comprises 50 parts of ammonium nitrate, 400 parts of sludge or lime mud, 400 parts of coal dust, 35 parts of potassium permanganate, 20 parts of ferrous sulfate, 25 parts of sodium chloride, 50 parts of kaolin, 10 parts of potassium sulfate, and 10 parts of sodium carbonate, all of the above parts represent parts by mass.

[0017] The method for preparing composite fuel is as follows: (1) After uniformly mixing the above-mentioned components, mechanically stir for 30 minutes at room temperature, and the above-mentioned parts represent parts by mass;

[0018] (2) Extruding the processed mixture in (1) to obtain a finished composite fuel product. Using the above-mentioned fuel test, its calorific value can reach about 3200 calories, and it is fully combustible and easy to burn when in use.

[0019] The present invention obtains through a large amount of tests when selecting suitable composition and proporti...

Embodiment 3

[0020] Embodiment three: the new fuel that the present invention develops, its formula comprises 35 parts of ammonium nitrate, 600 parts of sludge or lime mud, 500 parts of coal dust, 50 parts of potassium permanganate, 40 parts of ferrous sulfate, 40 parts of chlorine Sodium chloride, 20 parts of potassium sulfate, 30 parts of sodium carbonate, 200 parts of kaolin, the above parts all represent parts by mass. The fuel application test of this embodiment records that its calorific value is 3500 calories.

[0021] The preparation method is the same as in Example 2.

[0022] When preparing fuel, in order to better extrude the step (2), you can first test the water content of the coal powder to ensure that the water content is between 12-20% after mixing, but generally this step is not necessary , depending on the actual situation, the water content can be freely controlled, as long as it is convenient for the subsequent steps to be extruded.

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PUM

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Abstract

The invention relates to a novel sludge composite fuel which comprises the following components in parts by mass: 200-600 parts of sludge or white mud, 200-500 parts of coal powder, 10-50 parts of ammonium nitrate, 5-50 parts of potassium permanganate, 3-40 parts of ferrous sulfate and 10-40 parts of sodium chloride. The sludge composite fuel disclosed by the invention has the advantages that the fuel cost is reduced by substituting for a majority of usage amount of coal by utilizing a part of the sludge, the sludge of a sewage treatment plant and the white mud of a paper mill can be really and thoroughly treated, the pollution caused by the sludge and the white mud on the environment is furthest reduced and a product, namely the novel sludge composite fuel which makes prominent contributions to social benefit and economic benefit is obtained; and the preparation method is very simple, the workload and the production cost are reduced by omitting a sludge dewatering link.

Description

technical field [0001] The invention relates to the technical field of fuel preparation and waste recycling, in particular to a sludge composite fuel and a preparation method thereof. Background technique [0002] my country's current annual sludge production is more than 23 million tons. With the large-scale operation of sewage treatment plants under construction, the sludge production of urban sewage treatment plants will reach an average annual growth rate of 15%, and the annual output will exceed 46 million tons. Currently, 6% of the sludge is incinerated, 8% is recycled as compost, and the remaining sludge has not been stabilized, harmless, or recycled. [0003] With the continuous development of the paper industry, there are currently 2,500 paper mills in my country. These paper mills produce tens of millions of tons of lime mud annually. According to incomplete statistics, only 18% of these lime mud are stabilized and harmlessly disposed of. It should be sneaked. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/46
CPCY02E50/30Y02E50/10
Inventor 高红秀李桂妹高悦
Owner 深圳市固废环保科技有限公司