Waste incineration fly ash stabilization chemical and preparing method thereof

A waste incineration fly ash and stabilization technology, which is applied in the direction of protective devices against harmful chemicals, can solve the problems of high processing cost, unstable processing effect, secondary pollution, etc., and achieves simple preparation and application process, suitable for Large-scale promotion and application, with reasonable effects

Inactive Publication Date: 2017-05-10
SHENZHEN ENERGY ENVIRONMENT ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The chemical stabilization method has become a more commonly used treatment method at home and abroad because of its characteristics of simple operation and quick treatment effect. However, it also has problems such as high treatment cost and unstable treatment effect, and there is a risk of secondary pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A stabilizer agent for waste incineration fly ash, the components and their content percentages are as follows:

[0026] raw material Weight(KG) weight percentage (%) Potassium dihydrogen phosphate 40 40 polysilicate ferric sulfate 30 30 polyferric chloride 25 25 sea ​​foam mud 5 5 total 100 100

[0027] The preparation method of the above-mentioned garbage incineration fly ash stabilization agent is as follows:

[0028] The first step, take each raw material respectively by weight percentage in the above table;

[0029] The second step is to grind polysilicate ferric sulfate, pass through a 0.2mm sieve after crushing, and set aside;

[0030] Grind polyferric chloride, pass through a 0.15mm sieve after crushing, and set aside;

[0031] Grind the seafoam mud, pass through a 0.1mm sieve after crushing, and set aside;

[0032] In the third step, the raw material ground in step 2 is added to potassium dihydrogen phospha...

Embodiment 2

[0039] A stabilizer agent for waste incineration fly ash, the components and their content percentages are as follows:

[0040] raw material Weight(KG) weight percentage (%) Potassium dihydrogen phosphate 50 50 polysilicate ferric sulfate 20 20 polyferric chloride 20 20 sea ​​foam mud 10 10 total 100 100

[0041] The preparation method of the aforementioned waste incineration fly ash stabilizing agent is the same as that in Example 1.

[0042] Application example of waste incineration fly ash stabilization agent: take 10 kg of fly ash from a waste incineration power plant in Wuhan, add 2.5 kg of waste incineration fly ash stabilization agent of the present invention, stir evenly, add 1.5 kg of water and continue stirring for 120 seconds until uniform. The processed fly ash (chelate) is bagged and numbered. The numbering method adopts the format of year + month + day + production batch. This time the number is 2016-10-15-001. ...

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PUM

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Abstract

The invention provides a waste incineration fly ash stabilization chemical which is composed of monopotassium phosphate, polymeric ferric silicate sulfate, polymeric ferric chloride and sepiolite mud. The chemical includes, by weight, 40%-50% of the monopotassium phosphate, 20%-30% of the polymeric ferric silicate sulfate, 20%-30% of the polymeric ferric chloride and 5%-10% of the sepiolite mud. Meanwhile, the invention provides a preparing method of the above waste incineration fly ash stabilization chemical. The method includes the following steps that firstly, all the raw materials are weighed according to the above weight percentages; secondly, the polymeric ferric silicate sulfate, the polymeric ferric chloride and the sepiolite mud are ground evenly, wherein the particle size of the polymeric ferric silicate sulfate is not larger than 0.2 mm, the particle size of the polymeric ferric chloride is not larger than 0.15 mm, and the particle size of the sepiolite mud is not larger than 0.1 mm; and thirdly, the ground polymeric ferric silicate sulfate, the ground polymeric ferric chloride and the ground sepiolite mud are added into the monopotassium phosphate to be evenly stirred, and the waste incineration fly ash stabilization chemical is prepared.

Description

technical field [0001] The invention relates to a waste incineration fly ash treatment agent, in particular to a waste incineration fly ash stabilization agent and a preparation method thereof. Background technique [0002] At present, with the continuous acceleration of urbanization, the amount of urban domestic waste has increased sharply, and the growth momentum has not diminished. The pressure of garbage siege is increasing. The resulting environmental and social problems have become one of the bottlenecks restricting urban development. Waste incineration treatment technology has been widely used at home and abroad due to its advantages in resource utilization and reduction, but municipal solid waste incineration will produce incineration fly ash equivalent to 2% to 5% of the original waste mass. Fly ash contains water-soluble Cd, Pb, Zn, Cu, Cr and other harmful heavy metal substances. The list of hazardous wastes in my country has clearly listed waste incineration fly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D3/33A62D101/08A62D101/43
CPCA62D3/33A62D2101/08A62D2101/43
Inventor 谭巍赵晓峰沈竑吴燕琦
Owner SHENZHEN ENERGY ENVIRONMENT ENG
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