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Method and device for producing bunker coal with sludge

A coal-burning device and sludge technology, which is applied to fuels, solid fuels, biofuels, etc., can solve the problems of immaturity, low sludge content in sludge and coal slurry, and large amount of stabilizer, and achieve low cost and coal saving. The effect of good effect, saving resources and costs

Inactive Publication Date: 2012-06-27
青州市圣洁环保设备科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the technology of using sludge to make sludge coal slurry is immature, and the sludge content in the sludge coal slurry is small, and the amount of stabilizer is very large.

Method used

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  • Method and device for producing bunker coal with sludge
  • Method and device for producing bunker coal with sludge
  • Method and device for producing bunker coal with sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 As shown, a kind of sludge utilization includes the steps of:

[0028] 1) Dehydration, the sludge is dehydrated, and the water content in the sludge after the sludge dehydration treatment is 45wt%;

[0029] 2) Mixing, the dehydrated sludge is conveyed and mixed, and a combustion aid and a stabilizer are added to the dehydrated sludge for mixing. The amount of the mixture of fly ash, limestone powder and gypsum powder is 8% of the weight of the dehydrated sludge, and the weight ratio of fly ash, limestone powder and gypsum powder in the mixture is 2:1:1;

[0030] 3) Stirring, stirring and mixing the mixed sludge;

[0031] 4) Molding and drying, the mixed material is transported for molding after stirring and mixing, and then dried to obtain briquettes.

Embodiment 2

[0033] A method for utilizing sludge to produce coal, comprising the steps of:

[0034] 1) Dehydration, the sludge is dehydrated, and the water content in the sludge after the sludge dehydration treatment is 40wt%;

[0035] 2) Mixing, the dehydrated sludge is conveyed and mixed, and a combustion aid and a stabilizer are added to the dehydrated sludge for mixing. The amount of fly ash added is 10% of the weight of the sludge after dehydration, and the binder humic acid binder is also added, and the amount of humic acid binder is 5% of the weight of the sludge after dehydration;

[0036] 3) Stirring, stirring and mixing the mixed sludge;

[0037] 4) Molding and drying, the mixed material is transported for molding after stirring and mixing, and then dried to obtain briquettes.

Embodiment 3

[0039] A method for utilizing sludge to produce coal, comprising the steps of:

[0040] 1) Dehydration, the sludge is dehydrated, and the water content in the sludge after the sludge dehydration treatment is 50wt%;

[0041] 2) Mixing, the dehydrated sludge is transported and mixed, and a combustion aid and a stabilizer are added to the dehydrated sludge for mixing. The amount of the combustion aid is 30% of the weight of the dehydrated sludge, and the combustion aid is made of coal The powder weight content is 75% and the rest is composed of wood chips; the added amount of stabilizer limestone powder is 15% of the weight of the sludge after dehydration, and the binder humic acid binder is also added, and the amount of humic acid binder is after dehydration. 9% of the weight of the sludge, add foaming agent sodium lauryl sulfate, the amount of sodium lauryl sulfate added is 0.5% of the weight of the sludge after dehydration

[0042] 3) Stirring, stirring and mixing the mixed s...

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Abstract

The invention discloses a method and a device for producing bunker coal with sludge. The method comprises the following steps: dewatering the sludge through a dewaterer to ensure that the water content of the sludge is 40 to 55 wt percent after treatment; delivering the dewatered sludge through a sludge delivering device; adding a combustion improver and a stabilizing agent to the dewatered sludge, wherein the weight of the combustion improver is 20 to 30 percent that of the dewatered sludge, and the weight of the stabilizing agent is 8 to 15 percent that of the dewatered sludge; uniformly stirring the sludge mixed with the combustion improver and the stabilizing agent through a mixer; connecting a mixture delivering device with a formation device to mold the mixture; connecting the formation device with a finished product delivering device for delivering, drying and processing molded coal; connecting the feed end of the stirrer with a combustion improver quantificationally adding device and a stabilizing agent quantificationally adding device; and arranging a sludge meter between the sludge transportation device and the stirrer. The invention has the advantages that the structure of the device is simple; the fuel value can be more than 5000 kilocalorie; the burning performance is improved; the device is easy to operate and convenient to apply; the dose of pulverized coal is small; the coal saving effect is good; the cost is low; and the resource utilization of sludge is enhanced.

Description

technical field [0001] The invention relates to a sludge treatment technology, in particular to a method and a device for using sludge to produce coal under the premise of reducing the moisture content of the sludge and ensuring safe disposal of the sludge. Background technique [0002] With the popularization of urban sewage treatment plants in China, sludge production continues to increase. According to statistics, the current output of sludge in China is about 42 million tons per year, and it is also growing at a rate of about 15% per year. Therefore, the problem of sludge disposal is becoming more and more serious. The common disposal methods such as composting, landfilling, incineration and manufacturing building materials have their own advantages and disadvantages. The incineration of sludge causes air pollution again, and the landfill of sludge wastes freight and takes up a lot of space. , wasting resources and labor input, and causing adverse effects on the surroun...

Claims

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Application Information

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IPC IPC(8): C10L5/46
CPCY02E50/30Y02E50/10
Inventor 王兴国董慧梅孙春雷李晓桦
Owner 青州市圣洁环保设备科技有限公司
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