CN101716410A - Flying ash processing method - Google Patents
Flying ash processing method Download PDFInfo
- Publication number
- CN101716410A CN101716410A CN200910199364A CN200910199364A CN101716410A CN 101716410 A CN101716410 A CN 101716410A CN 200910199364 A CN200910199364 A CN 200910199364A CN 200910199364 A CN200910199364 A CN 200910199364A CN 101716410 A CN101716410 A CN 101716410A
- Authority
- CN
- China
- Prior art keywords
- flying ash
- flying dust
- ratio
- metakaolin
- sodium phosphate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003672 processing method Methods 0.000 title abstract 2
- HQABUPZFAYXKJW-UHFFFAOYSA-N butan-1-amine Chemical compound CCCCN HQABUPZFAYXKJW-UHFFFAOYSA-N 0.000 claims abstract description 28
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 15
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 13
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 13
- 239000001488 sodium phosphate Substances 0.000 claims abstract description 13
- 229910000162 sodium phosphate Inorganic materials 0.000 claims abstract description 13
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims abstract description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 12
- 239000013522 chelant Substances 0.000 claims abstract description 12
- 239000012190 activator Substances 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 8
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 239000003814 drug Substances 0.000 claims abstract description 5
- 238000001354 calcination Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 239000000428 dust Substances 0.000 claims description 40
- 239000010881 fly ash Substances 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 13
- 238000012423 maintenance Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 239000002738 chelating agent Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 229940079593 drug Drugs 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 231100000820 toxicity test Toxicity 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000003513 alkali Substances 0.000 abstract 2
- 229920001661 Chitosan Polymers 0.000 abstract 1
- 238000012258 culturing Methods 0.000 abstract 1
- 238000001035 drying Methods 0.000 abstract 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 abstract 1
- 231100000331 toxic Toxicity 0.000 abstract 1
- 230000002588 toxic effect Effects 0.000 abstract 1
- 239000002956 ash Substances 0.000 description 5
- 239000013043 chemical agent Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- -1 dibutyl phosphordithiic acid amine Chemical class 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The invention relates to a flying ash processing method. The method comprises the following steps: A, weighting a certain amount of flying ash; sequentially adding sodium phosphate, aluminum sulfate, chitosan and butyl amine aerofloat to the flying ash; adding water to the flying ash in a ratio of 1:1; stirring; and then drying in an oven to form a flying ash chelate; B, for improving the reaction effect, calcining kaolin at a temperature of 800 DEG C for 6 hours to prepare metakaolin; dissolving sodium hydroxide in soluble glass to prepare an alkali activator; doping the metakaolin in the flying ash chelate in a ratio range of 3:5 to 3:2; adding the alkali activator to the mixture in a ratio of 0.7:1; C, guiding the mixed pulp into a die; compacting and demolding; and D, culturing for 4 weeks at a room temperature for a toxic test. The invention adopts the chemical medicaments to burn the flying ash and fully mixes with the flying ash, thereby fully trapping heavy metals in the flying ash and achieving the aim of stabilizing the heavy metals in the flying ash for a long time.
Description
Technical field
The invention belongs to useless admittedly processing technology field, relate in particular to a kind of new flyash treatment method that utilizes compound chemical agent to handle flying ash.
Background technology
Burn away the refuse and contain a large amount of poisonous and harmful substances in the flying dust, data shows that the content of incinerating flyash, heavy metal has substantially exceeded security landfill admission control criterion.At present the processing of incineration of refuse flyash is mainly concentrated on aspects such as the chemical agent of heat treatment, flying dust of cement solidification, flying dust is fixing.
Existing technology concentrates on single cement, phosphate chelation treatment flying dust, national environmental protection portion upgraded the pollution control criterion of household refuse landfill sites in 2008, be GB 16889-2008, wherein pollutant levels in the flying dust leachate that enters household refuse landfill sites have been made more strict regulation, flying dust only reaches this standard just can enter landfill yard.
Present single treatment technology is difficult to satisfy this new standard, and how the heavy metal in the stabilizing flying ash from burn reduces its harm to environment, is an important research project.In order to improve the prior art situation, be necessary to research and develop new flying dust treatment technology.
Summary of the invention
Task of the present invention provides a kind of new flyash treatment method, and it has solved above-mentioned existing in prior technology problem, adopts the composite chelate agent to make flying dust up to standard by the series reaction with flying dust, and then enters landfill yard smoothly.
Technical solution of the present invention is as follows:
A kind of flyash treatment method, take following steps:
A, under 20 ℃ of conditions of environment temperature, take by weighing quantitative flying dust, add sodium phosphate, aluminum sulfate, shitosan and butylamine black powder in order successively in flying dust, add entry, the ratio of flying dust and water is 1: 1, rotating speed with 200 rev/mins stirs in electric blender, stops after 10 minutes stirring, after leaving standstill 24 hours, put into baking oven and dry, temperature is controlled at 50 ℃, forms the flying dust chelate;
B, in order to improve reaction effect, kaolin was made metakaolin in 6 hours in 800 ℃ of following calcinings of temperature, simultaneously the water-soluble glass of NaOH is made alkali-activator, metakaolin is mixed in the flying dust chelate, the proportion of metakaolin and flying dust chelate was at 3: 5～3: 2, add alkali-activator after mixing, the ratio of mixture and alkali-activator is 1: 0.7;
C, the above-mentioned slurry that mixes is imported in the mould compacting, the maintenance demoulding in 24 hours under 60 ℃ of temperature, humidity 90% condition;
D, maintenance are at room temperature carried out toxicity test after 4 weeks.
Described sodium phosphate, aluminum sulfate, shitosan and butylamine black powder and kaolin composite drug are made the flying dust chelating agent, with trap heavy metals more up hill and dale.
The ratio of adding of described sodium phosphate, aluminum sulfate, shitosan and butylamine black powder is: sodium phosphate 8%～10%, aluminum sulfate 0.8%～1%, shitosan 0.8%～1%, butylamine black powder 1%～3%.
The present invention adopts chemical agent to handle flying ash, by with fully the mixing of flying dust, the heavy metal in the flying dust is fully captured, reach the purpose of heavy metal in the flying dust steady in a long-term.
By flyash treatment method of the present invention, treatment effect reaches household refuse landfill sites and pollutes control criterion GB16889-2008.
The specific embodiment
Below in conjunction with a preferred embodiment a kind of flyash treatment method of the present invention is elaborated.
By a kind of flyash treatment method of the present invention, take following steps:
A, under 20 ℃ of conditions of environment temperature, take by weighing a certain amount of flying dust, add sodium phosphate, aluminum sulfate, shitosan and butylamine black powder in order successively in flying dust, add an amount of water, the ratio of flying dust and water is 1: 1, with 200 rev/mins rotating speed, in JB90-D type electric blender, stir, stop after 10 minutes stirring, after leaving standstill 24 hours, put into baking oven and dry, temperature is controlled at 50 ℃, forms the flying dust chelate.
B, in order to improve reaction effect, kaolin was made metakaolin in 6 hours in 800 ℃ of following calcinings of temperature, simultaneously the water-soluble glass of NaOH is made alkali-activator, metakaolin is mixed in the flying dust chelate, the proportion of metakaolin and flying dust chelate was at 3: 5～3: 2, add alkali-activator after mixing, the ratio of mixture and alkali-activator is 1: 0.7.
C, the above-mentioned slurry that mixes is imported in the mould compacting, the maintenance demoulding in 24 hours under 60 ℃ of temperature, humidity 90% condition.
D, maintenance are at room temperature carried out toxicity test after 4 weeks.
Sodium phosphate, aluminum sulfate, shitosan and butylamine black powder and kaolin composite drug are made the flying dust chelating agent, comprise cohesion, precipitation, the cross-linking reaction of polymeric material, with trap heavy metals more up hill and dale.
In operating process, sodium phosphate, aluminum sulfate, shitosan and butylamine black powder are added in flying dust in order successively, the best ratio of adding is: sodium phosphate 8%～10%, aluminum sulfate 0.8%～1%, shitosan 0.8%～1%, butylamine black powder 1%～3% adds an amount of water, and the ratio of flying dust and water is 1: 1.
By flyash treatment method of the present invention, by the ratio of controlling chelating agent and flying dust and water heavy metal and medicament in the flying dust are fully reacted, reduce the activity of heavy metal in the flying ash greatly, pollute control criterion thereby reach consumer waste filling and embedding.
Represented the chelatropic reaction process in the following formula:
The chelatropic reaction formula:
1. butylamine black powder (dibutyl phosphordithiic acid amine)
2. Al
2(SO
4)
3Cohesion
Al
2(SO
4)
3·H
2O+Me(OH)
2→[Al
2(OH)(SO
4)
3]+MeSO
4↓
3. Na
3PO
4Precipitation
4. kaolin glue connects
In summary, the present invention adopts chemical agent to handle flying ash, by with fully the mixing of flying dust, the heavy metal in the flying dust is fully captured, reach the purpose of heavy metal in the flying dust steady in a long-term.By flyash treatment method of the present invention, treatment effect reaches household refuse landfill sites and pollutes control criterion GB 16889-2008.
Certainly, those skilled in the art in the present technique field will be appreciated that, the foregoing description only is to be used for illustrating the present invention, and be not as limitation of the invention, as long as in connotation scope of the present invention, all will drop in the scope of claim of the present invention conversion, the modification of the foregoing description.
Claims (3)
1. a flyash treatment method is characterized in that, takes following steps:
A, under 20 ℃ of conditions of environment temperature, take by weighing quantitative flying dust, add sodium phosphate, aluminum sulfate, shitosan and butylamine black powder in order successively in flying dust, add entry, the ratio of flying dust and water is 1: 1, rotating speed with 200 rev/mins stirs in electric blender, stops after 10 minutes stirring, after leaving standstill 24 hours, put into baking oven and dry, temperature is controlled at 50 ℃, forms the flying dust chelate;
B, in order to improve reaction effect, kaolin was made metakaolin in 6 hours in 800 ℃ of following calcinings of temperature, simultaneously the water-soluble glass of NaOH is made alkali-activator, metakaolin is mixed in the flying dust chelate, the proportion of metakaolin and flying dust chelate was at 3: 5～3: 2, add alkali-activator after mixing, the ratio of mixture and alkali-activator is 1: 0.7;
C, the above-mentioned slurry that mixes is imported in the mould compacting, the maintenance demoulding in 24 hours under 60 ℃ of temperature, humidity 90% condition;
D, maintenance are at room temperature carried out toxicity test after 4 weeks.
2. flyash treatment method according to claim 1 is characterized in that, described sodium phosphate, aluminum sulfate, shitosan and butylamine black powder and kaolin composite drug are made the flying dust chelating agent, with trap heavy metals more up hill and dale.
3. flyash treatment method according to claim 1 and 2, it is characterized in that the ratio of adding of described sodium phosphate, aluminum sulfate, shitosan and butylamine black powder is: sodium phosphate 8%～10%, aluminum sulfate 0.8%～1%, shitosan 0.8%～1%, butylamine black powder 1%～3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101993646A CN101716410B (en) | 2009-11-26 | 2009-11-26 | Flying ash processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101993646A CN101716410B (en) | 2009-11-26 | 2009-11-26 | Flying ash processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101716410A true CN101716410A (en) | 2010-06-02 |
| CN101716410B CN101716410B (en) | 2011-07-27 |
Family
ID=42431106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101993646A Active CN101716410B (en) | 2009-11-26 | 2009-11-26 | Flying ash processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101716410B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104759454A (en) * | 2015-04-23 | 2015-07-08 | 中国环境科学研究院 | Fly ash solidification and stabilization method |
| CN104761168A (en) * | 2015-04-23 | 2015-07-08 | 中国环境科学研究院 | Recycling method for fly-ash building materials |
| CN107324772A (en) * | 2017-06-14 | 2017-11-07 | 湖北楚荆新型建材有限公司 | A kind of fly ash baked brick and its preparation technology |
| CN108295414A (en) * | 2017-12-29 | 2018-07-20 | 武汉都市环保工程技术股份有限公司 | A kind of incineration of refuse flyash solidification process for sequestration |
| CN113121156A (en) * | 2021-04-12 | 2021-07-16 | 南方科技大学 | Treatment method of hazardous waste incineration fly ash |
| CN113713313A (en) * | 2021-09-02 | 2021-11-30 | 中科南京绿色制造产业创新研究院 | Method for treating heavy metal in fly ash |
| CN115040970A (en) * | 2022-07-19 | 2022-09-13 | 中泰莱(江苏)环境有限公司 | Treatment method for green recycling of fly ash |
| CN117046881A (en) * | 2023-10-11 | 2023-11-14 | 杭州尚善若水环保科技有限公司 | Resource utilization method of waste incineration fly ash |
-
2009
- 2009-11-26 CN CN2009101993646A patent/CN101716410B/en active Active
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104759454A (en) * | 2015-04-23 | 2015-07-08 | 中国环境科学研究院 | Fly ash solidification and stabilization method |
| CN104761168A (en) * | 2015-04-23 | 2015-07-08 | 中国环境科学研究院 | Recycling method for fly-ash building materials |
| CN104761168B (en) * | 2015-04-23 | 2016-07-06 | 中国环境科学研究院 | Flying dust building materials reuse method |
| CN104759454B (en) * | 2015-04-23 | 2016-07-27 | 中国环境科学研究院 | Flyash curing stabilization method |
| CN107324772A (en) * | 2017-06-14 | 2017-11-07 | 湖北楚荆新型建材有限公司 | A kind of fly ash baked brick and its preparation technology |
| CN108295414A (en) * | 2017-12-29 | 2018-07-20 | 武汉都市环保工程技术股份有限公司 | A kind of incineration of refuse flyash solidification process for sequestration |
| CN113121156A (en) * | 2021-04-12 | 2021-07-16 | 南方科技大学 | Treatment method of hazardous waste incineration fly ash |
| CN113713313A (en) * | 2021-09-02 | 2021-11-30 | 中科南京绿色制造产业创新研究院 | Method for treating heavy metal in fly ash |
| CN113713313B (en) * | 2021-09-02 | 2022-06-21 | 中科南京绿色制造产业创新研究院 | Method for treating heavy metal in fly ash |
| CN115040970A (en) * | 2022-07-19 | 2022-09-13 | 中泰莱(江苏)环境有限公司 | Treatment method for green recycling of fly ash |
| CN117046881A (en) * | 2023-10-11 | 2023-11-14 | 杭州尚善若水环保科技有限公司 | Resource utilization method of waste incineration fly ash |
| CN117046881B (en) * | 2023-10-11 | 2024-02-27 | 杭州尚善若水环保科技有限公司 | Resource utilization method of waste incineration fly ash |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101716410B (en) | 2011-07-27 |
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Xiaoyun Inventor after: Shen Guoxuan Inventor after: Wang Lei Inventor before: Wang Xiaoyun Inventor before: Li Ping |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG XIAOYUN LI PING TO: WANG XIAOYUN SHEN GUOXUAN WANG LEI |
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| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI ENVIRONMENTAL SANITATION ENGINEERING DESI |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20110520 Address after: 200232, 11, 345, Shilong Road, Shanghai, Xuhui District Applicant after: Shanghai Institute for Design & Research on Environmental Engineering Co-applicant after: Shanghai Environmental Sanitation Engineering Design Institute Address before: 200232, 11, 345, Shilong Road, Shanghai, Xuhui District Applicant before: Shanghai Institute for Design & Research on Environmental Engineering |
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| C14 | Grant of patent or utility model | ||
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| CP01 | Change in the name or title of a patent holder |
Address after: No.11, Lane 345, Shilong Road, Xuhui District, Shanghai 200232 Patentee after: SHANGHAI INSTITUTE FOR DESIGN & RESEARCH ON ENVIRONMENTAL ENGINEERING Patentee after: SHANGHAI ENVIRONMENTAL SANITATION ENGINEERING DESIGN INSTITUTE Co.,Ltd. Address before: No.11, Lane 345, Shilong Road, Xuhui District, Shanghai 200232 Patentee before: SHANGHAI INSTITUTE FOR DESIGN & RESEARCH ON ENVIRONMENTAL ENGINEERING Patentee before: SHANGHAI ENVIRONMENTAL SANITATION ENGINEERING DESIGN INSTITUTE |
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| CP01 | Change in the name or title of a patent holder |