CN1586743A - Treating method for city life garbage burning flyash - Google Patents
Treating method for city life garbage burning flyash Download PDFInfo
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- CN1586743A CN1586743A CN 200410054315 CN200410054315A CN1586743A CN 1586743 A CN1586743 A CN 1586743A CN 200410054315 CN200410054315 CN 200410054315 CN 200410054315 A CN200410054315 A CN 200410054315A CN 1586743 A CN1586743 A CN 1586743A
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- flying dust
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Abstract
The present invention belongs to the field of environment protecting and powder surface modifying technology. The treating method of the city life garbage burning flyash adopts anionic surfactant with chelating function and over 8 carbon chain structure. The wet flyash modifying process includes the following steps: weighing certain amount of flyash, adding into water solution, stirring in stirrer and heating in water bath at 25-80 deg.c for 10 min; adding specific chelating anionic surfactant with C12H25OPO3K2 as main component in 2-5 %; further stirring at certain amount of temperature and rotation speed for 15-25 min; sieving and sealed maintenance.
Description
Technical field
The present invention relates to the processing method of fly ash from burning city domestic garbage, belong to environmental protection and powder surface modification chemical process technology field.
Background technology
Dangerous Hazardous Waste Management is a part of global environment problem, also is an outstanding problem of China environmental protection, and city garbage burning is the important means that domestic waste is disposed, and burning process will produce a large amount of flying dusts.Contain heavy metals such as many harmful lead, cadmium, zinc in the incineration of refuse flyash, the more important thing is, flying ash enrichment simultaneously has toxic components such as carcinogenesis De bioxin and furans to human body, domestic and international existing environmental legislation classifies as hazardous waste with it, emphasizes to give safe disposal.
Shanghai disposition of solid waste planning according to the Shanghai City government permission, by 2010, Shanghai will form the development pattern of inner city house refuse based on burning disposal, at present, the 600000 tons of waste incinerations in Shanghai will produce nearly 20,000 tons of MSW flying dusts every year, and Shanghai flying ash generation will reach 7 ~ 80,000 tons/year in 2010.
At present Shanghai adopts the security landfill method to dispose flying dust, and not only the landfill disposal costs is very high, and the method for security landfill has simultaneously taken a large amount of land resource, and obviously, this and existing Shanghai land resource, financial resource are conflicting.Simultaneously the security landfill method with the viewpoint of recycling economy and energy sustainable development deviate from mutually.
On the other hand, the surge of the total output of China's plastic products surpasses 1,500 ten thousand tons, wherein is used for filling-modified inorganic non-metallic mineral powder material, and year consumption figure is above 2,000,000 tons.If the flying dust after the modification is made the filler of high molecular polymer.Not only can reduce the production cost of plastic products, and have great environmental protection meaning.
In general, the filler that plastics are made in the flying dust modification is one of method of present safe handling and recycling the best, and the flying dust recycling mainly concentrates on the following aspects both at home and abroad: in Japan, flying dust and end slag mix to be made as eco-cement (1); (2) U.S. and other American-European developed countries make the alternative aggregate of cement concrete and pitch with mixed ash; (3) fusing fly ash is made the raw material of devitrified glass.But the processing of these resources fails to solve actual engineering problem: it is troubling all the time that the heavy metal ion after (1) resource in the flying dust leaches problem; (2) flying dust resource cost is too high, is not suitable for producing in batches; (3) added value of flying dust resource product is low.
Summary of the invention
The objective of the invention is to utilize city garbage burning flying ash, the modification by surfactant is handled, and forms the nonmetallic mineral filler, for the resource of flying dust provides a brand-new outlet.
The objective of the invention is by the following technical programs to reach with measure.
The processing method of a kind of fly ash from burning city domestic garbage of the present invention is characterized in that adopting anion surfactant, specifically adopts to have anion surfactant chelating function, that have long carbon-chain structure more than 8; The modified technique step of flying dust is as follows: take by weighing a certain amount of flying dust earlier, sieve through Taylor standard sieve, flying dust is added in the aqueous solution, making the ratio of mud is 2-20: 1 suspended emulsion, put into mixer then, the water-bath heat temperature raising is to 25-80 ℃, and stirs 10 minutes; The specific chelating type anion surfactant that adds 2-5% then is mainly laurate list potassium phosphate C
12H
25OPO
3K
2Under temperature-resistant situation, rotating speed remains on 1000RPM to be continued down to stir 15-25 minute, and fly ash granule and laurate list potassium phosphate are fully reacted then; Separation of Solid and Liquid is dried the flying dust after the modification 24 hours down at 105 ℃ then, sieves and seal preservation at last.
Chelating type anion surfactant of the present invention has multiple, and all anion surfactants that has chelating function and have 8 long carbon-chain structures of above carbon atom can use, and processing step can carry out by the same manner.This kind anion surfactant can be glyceryl stearate citrate; N-lauroyl ethylenediamine triacetic acid C20H36O7N2 or its esters; The stearic amido of 1--1-methyl-prop sodium phosphate.
Used specific chelating type anion surfactant in the inventive method, flying dust after the modification, its surface coverage one deck anion surfactant, formed the connection bridge between flying dust and plastics or the rubber, and be filled in the high molecular polymer, the heavy metal ion in the flying dust is had stronger solidification; In addition, the flying dust after the modification shows as strong hydrophobicity, and its hydrophily of unmodified flying dust is very strong.
Because the heavy metal ion in the fly ash granule and have between the chelating type anion surfactant chelatropic reaction has taken place has formed chelate, is absorbed by fly ash granule, thereby has reduced the leaching rate of heavy metal ion in the flying dust; In addition since the fly ash granule surface graft one deck anion surfactant, and contain long carbochain hydrophobic grouping more than 8 carbon atoms in this surfactant structure, make fly ash granule obtain activation.Its activation rate of flying dust after the modification meets the requirement as the macromolecule polymer material filler fully up to more than 95%.
Fly ash from burning city domestic garbage contains calcium element silicon composition, and the composition of its mineral composition and wollastonite is similar, and present mainly being used in after Wollastonite modified made filler in plastics/rubber.Can be used for the substituted for silicon lime stone after the flying dust modification makes the filler of plastics/rubber.Can effectively handle a large amount of fly ash from burning city domestic garbage like this, help environmental protection and save limited land resources.Flying dust replaces wollastonite simultaneously, can solve domestic mineral filler problem of shortage.
Specific implementation method
After now embodiments of the invention being described in.
Embodiment one: by the oven dry of a certain amount of flying dust, use the Taylor standard sieve mistake, make by 125 μ m sieve apertures, take by weighing 100 gram flying dusts then, add the 0.5 liter aqueous solution, make the ratio of mud and be 5: 1 suspension, put into mixer then and stir.Warming-in-water to 45 ℃, and stirred 10 minutes, add chelating type anion surfactant laruyl alcohol phosplate sylvite then, it has the structure of 12 carbon atom long-chains and chelating agent phosphoric acid, its addition is 5.0 milliliters, under temperature-resistant situation, rotating speed remains on 1000rpm to be continued down to stir 15 minutes, and fly ash granule and laruyl alcohol phosplate sylvite are fully reacted; Separation of Solid and Liquid is dried by the fire the flying dust after the modification 24 hours down at 105 ℃ then, sieve at last, and sealing is preserved.
Embodiment two: by the oven dry of a certain amount of flying dust, use the Taylor standard sieve mistake, make by 125 μ m sieve apertures, take by weighing 100 gram flying dusts then, add the 1 liter aqueous solution, make the ratio of mud and be 10: 1 suspension, put into mixer then and stir.Warming-in-water to 75 ℃, and stirred 10 minutes, add chelating type anion surfactant glyceryl stearate citrate then, it has the structure of 18 carbon atom long-chains and chelating agent citric acid, its addition is 3.0 milliliters, under temperature-resistant situation, rotating speed remains on 1000rpm to be continued down to stir 25 minutes, and fly ash granule and glyceryl stearate citrate are fully reacted; Separation of Solid and Liquid is dried by the fire the flying dust after the modification 24 hours down at 105 ℃ then, sieve at last, and sealing is preserved.
Embodiment three: by the oven dry of a certain amount of flying dust, use the Taylor standard sieve mistake, make by 125 μ m sieve apertures, take by weighing 100 gram flying dusts then, add the 2 liter aqueous solution, make the ratio of mud and be 20: 1 suspension, put into mixer then and stir.Warming-in-water to 30 ℃, and stirred 10 minutes, add chelating type anion surfactant N-lauroyl ethylenediamine triacetic acid then, it has the structure of 12 carbon atom long-chains and chelating agent EDTA, its addition is 2.0 milliliters, under temperature-resistant situation, rotating speed remains on 1000rpm to be continued down to stir 20 minutes, and fly ash granule and N-lauroyl ethylenediamine triacetic acid are fully reacted; Separation of Solid and Liquid is dried by the fire the flying dust after the modification 24 hours down at 105 ℃ then, sieve at last, and sealing is preserved.
Embodiment four: by the oven dry of a certain amount of flying dust, use the Taylor standard sieve mistake, make by 125 μ m sieve apertures, take by weighing 100 gram flying dusts then, add the 1 liter aqueous solution, make the ratio of mud and be 10: 1 suspension, put into mixer then and stir.Warming-in-water to 50 ℃, and stirred 10 minutes, add the stearic amido of chelating type anion surfactant 1--1-methyl-prop sodium phosphate then, it has 18 carbon atom long-chains and the phosphatic structure of chelating agent, its addition is 2.5 grams, under temperature-resistant situation, rotating speed remains on 1000rpm to be continued down to stir 25 minutes, and the stearic amido of fly ash granule and 1--1-methyl-prop sodium phosphate is fully reacted; Separation of Solid and Liquid is dried by the fire the flying dust after the modification 24 hours down at 105 ℃ then, sieve at last, and sealing is preserved.
Test by each sample of the foregoing description, learn that its activation rate of flying dust after the modification can be up to more than 95%, infrared spectrum characteristic peak contrast to modification flying dust and original flying dust, occurred new characteristic absorption peak in the modification flying dust, proved that the fly ash granule surface is coated with a certain amount of anion surfactant.Through the TCLP method test that EPA formulates, the leaching solubility of the Pb2+ in the flying dust, Zn2+ and Cd2+ heavy metal ion is all far below national standard.
The present invention compares with other nonmetallic mineral modifications:
Compare with other nonmetallic mineral fillers, the particle diameter of flying dust is evenly distributed, 95wt% below 200 μ m, and And the flying dust source is wide, and cost is low; Flying dust activation rate height after the modification, the scope of acid and alkali-resistance is wide.
The present invention compares with other flying dust method of resource:
The cost of flying dust modification is low, the value-added content of product height. After the test of the TCLP of EPA method, flying dust Middle Pb2+、Zn
2+And Cd2+(because funds are limited, it is molten that the present invention only measures the leaching of above-mentioned 3 heavy metal species ions Degree) leaching solubility is all far below national standard.
Claims (4)
1. the processing method of a fly ash from burning city domestic garbage is characterized in that adopting anion surfactant, specifically adopts to have anion surfactant chelating function, that have long carbon-chain structure more than 8; The modified technique step of flying dust is as follows: take by weighing a certain amount of flying dust earlier, sieve through Taylor standard sieve, flying dust is added in the aqueous solution, making the ratio of mud is 2-20: 1 suspended emulsion, put into mixer then, the water-bath heat temperature raising is to 25-80 ℃, and stirs 10 minutes; The specific chelating type anion surfactant that adds 2-5% then is mainly laurate list potassium phosphate C
12H
25OPO
3K
2Under temperature-resistant situation, rotating speed remains on 1000RPM to be continued down to stir 15-25 minute, and fly ash granule and laurate list potassium phosphate are fully reacted then; Separation of Solid and Liquid is dried the flying dust after the modification 24 hours down at 105 ℃ then, sieves and seal preservation at last.
2. the processing method of a kind of fly ash from burning city domestic garbage according to claim 1 is characterized in that described chelating type anion surfactant can adopt glyceryl stearate citrate.
3. the processing method of a kind of fly ash from burning city domestic garbage according to claim 1 is characterized in that described chelating type anion surfactant can adopt N-lauroyl ethylenediamine triacetic acid C20H36O7N2 or its esters.
4. the processing method of a kind of fly ash from burning city domestic garbage according to claim 1 is characterized in that described chelating type anion surfactant can adopt the stearic amido of 1--1-methyl-prop sodium phosphate.
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| CN 200410054315 CN1244414C (en) | 2004-09-07 | 2004-09-07 | Treating method for city life garbage burning flyash |
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|---|---|---|---|
| CN 200410054315 CN1244414C (en) | 2004-09-07 | 2004-09-07 | Treating method for city life garbage burning flyash |
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| CN1586743A true CN1586743A (en) | 2005-03-02 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102161490A (en) * | 2011-01-28 | 2011-08-24 | 北京市琉璃河水泥有限公司 | System and method for extracting potassium sodium salt from garbage incineration fly ash |
| CN102303036A (en) * | 2011-07-06 | 2012-01-04 | 东江环保股份有限公司 | Alkali activated solidification and stabilization treatment method of refuse incineration fly ash |
| CN102869811A (en) * | 2010-03-12 | 2013-01-09 | 科学与工业研究委员会 | Process for the surface-modification of flyash and industrial applications thereof |
| CN103512930A (en) * | 2012-06-18 | 2014-01-15 | 栗田工業株式会社 | Method for determining adding amount of organic chelate heavy metal fixing agent |
| CN104371178A (en) * | 2014-11-24 | 2015-02-25 | 扬州大学 | Method for preparing high polymer composite material by taking garbage power generation flying ash as raw material |
| CN105498146A (en) * | 2015-12-25 | 2016-04-20 | 重庆科技学院 | Incineration fly ash bi-component heavy metal stabilizer and fly ash treatment method applying same |
| CN107286429A (en) * | 2017-07-13 | 2017-10-24 | 浙江工业大学温州科学技术研究院 | A kind of method of incineration of refuse flyash recycling and products thereof |
| CN108611147A (en) * | 2018-05-22 | 2018-10-02 | 新奥科技发展有限公司 | A kind of preparation method and formed coke of formed coke |
| CN109622560A (en) * | 2018-12-04 | 2019-04-16 | 合肥全晟环保科技有限公司 | The processing method of incineration of refuse flyash |
| CN109848188A (en) * | 2019-03-28 | 2019-06-07 | 北京科技大学 | A kind of method of kitchen garbage lactic fermentation liquid pretreatment domestic garbage incineration flyash |
| CN112044923A (en) * | 2020-08-03 | 2020-12-08 | 杨晓秋 | Garbage combustion fly ash solidification method |
| CN112122309A (en) * | 2020-09-09 | 2020-12-25 | 杭州灰弘环保科技有限公司 | Novel method for detoxifying municipal solid waste incineration fly ash by using dioxin |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101428290B (en) * | 2008-11-19 | 2010-06-02 | 沈恩善 | Method for treating garbage burning flying ash |
-
2004
- 2004-09-07 CN CN 200410054315 patent/CN1244414C/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102869811A (en) * | 2010-03-12 | 2013-01-09 | 科学与工业研究委员会 | Process for the surface-modification of flyash and industrial applications thereof |
| CN102161490A (en) * | 2011-01-28 | 2011-08-24 | 北京市琉璃河水泥有限公司 | System and method for extracting potassium sodium salt from garbage incineration fly ash |
| CN102161490B (en) * | 2011-01-28 | 2012-11-21 | 北京市琉璃河水泥有限公司 | System and method for extracting potassium sodium salt from garbage incineration fly ash |
| CN102303036A (en) * | 2011-07-06 | 2012-01-04 | 东江环保股份有限公司 | Alkali activated solidification and stabilization treatment method of refuse incineration fly ash |
| CN102303036B (en) * | 2011-07-06 | 2014-01-15 | 东江环保股份有限公司 | Alkali activated solidification and stabilization treatment method of refuse incineration fly ash |
| CN103512930A (en) * | 2012-06-18 | 2014-01-15 | 栗田工業株式会社 | Method for determining adding amount of organic chelate heavy metal fixing agent |
| CN104371178A (en) * | 2014-11-24 | 2015-02-25 | 扬州大学 | Method for preparing high polymer composite material by taking garbage power generation flying ash as raw material |
| CN105498146A (en) * | 2015-12-25 | 2016-04-20 | 重庆科技学院 | Incineration fly ash bi-component heavy metal stabilizer and fly ash treatment method applying same |
| CN107286429A (en) * | 2017-07-13 | 2017-10-24 | 浙江工业大学温州科学技术研究院 | A kind of method of incineration of refuse flyash recycling and products thereof |
| CN107286429B (en) * | 2017-07-13 | 2019-07-23 | 浙江工业大学温州科学技术研究院 | A kind of method and products thereof of incineration of refuse flyash recycling |
| CN108611147A (en) * | 2018-05-22 | 2018-10-02 | 新奥科技发展有限公司 | A kind of preparation method and formed coke of formed coke |
| CN109622560A (en) * | 2018-12-04 | 2019-04-16 | 合肥全晟环保科技有限公司 | The processing method of incineration of refuse flyash |
| CN109848188A (en) * | 2019-03-28 | 2019-06-07 | 北京科技大学 | A kind of method of kitchen garbage lactic fermentation liquid pretreatment domestic garbage incineration flyash |
| CN112044923A (en) * | 2020-08-03 | 2020-12-08 | 杨晓秋 | Garbage combustion fly ash solidification method |
| CN112122309A (en) * | 2020-09-09 | 2020-12-25 | 杭州灰弘环保科技有限公司 | Novel method for detoxifying municipal solid waste incineration fly ash by using dioxin |
| CN112122309B (en) * | 2020-09-09 | 2021-08-17 | 杭州灰弘环保科技有限公司 | Novel method for detoxifying municipal solid waste incineration fly ash by using dioxin |
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| CN1244414C (en) | 2006-03-08 |
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