CN111265810A - Efficient fly ash chelating agent and preparation method thereof - Google Patents
Efficient fly ash chelating agent and preparation method thereof Download PDFInfo
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- CN111265810A CN111265810A CN201910890198.8A CN201910890198A CN111265810A CN 111265810 A CN111265810 A CN 111265810A CN 201910890198 A CN201910890198 A CN 201910890198A CN 111265810 A CN111265810 A CN 111265810A
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
- A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
- A62D3/33—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by chemical fixing the harmful substance, e.g. by chelation or complexation
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
- A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
- A62D2101/08—Toxic combustion residues, e.g. toxic substances contained in fly ash from waste incineration
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Abstract
The invention provides an efficient fly ash chelating agent and a preparation method thereof, wherein the efficient fly ash chelating agent is prepared from the following raw materials in parts by mass: trimercapto-s-triazine: 5-10; compound sulfate: 8-15 parts of; sodium hexametaphosphate: 5-10; sodium dimethyldithiocarbamate: 25-35; water: 30-57; the preparation method comprises the following steps: (1) uniformly mixing trimercapto-s-triazine, composite sulfate, sodium hexametaphosphate and sodium dimethyldithiocarbamate according to the formula ratio to prepare a compound powdery solid mixture; (2) dissolving the compound powdery solid mixture in the water with the mixture ratio, uniformly stirring, standing and filtering to obtain the compound powdery solid mixture. The invention can generate oxidation-reduction reaction with high-valence heavy metal ions in the fly ash, so that the heavy metal ions are easy to chelate; can carry out chelation reaction with different heavy metal ions in the fly ash, and has high reaction speed and good chelation effect; is environment-friendly, safe and nontoxic.
Description
Technical Field
The invention relates to the field of metal chelating agents, in particular to an efficient fly ash chelating agent and a preparation method thereof.
Background
The garbage incineration can generate fly ash while realizing reduction treatment of the domestic garbage. The fly ash from the incineration of the household garbage has complex components, and the main pollutants are heavy metals with high leaching toxicity, which have serious harm to the environment. Heavy metals are continuously migrated and transformed in the environment, and polluted soil and water environments cannot be eliminated through self purification, and cannot be decomposed by microorganisms and can be enriched through a biological chain, so that pollutants in the fly ash are lost into the environment due to improper treatment of the fly ash, and serious harm is caused to human health and natural environment. Through detection, the fly ash from the incineration of the household garbage contains heavy metals with high leaching concentration, such as Pb, Cr, Cd, Cu, Hg, Zn and the like. Therefore, fly ash is a hazardous waste that requires significant control in all countries of the world.
At present, the main technical methods for treating fly ash in the domestic waste incineration industry are mainly three, one is to adopt a cement curing technology to cure heavy metals, and the heavy metals react with hydrated cement through ion exchange, passivation, adsorption, chemical adsorption, sedimentation, and finally form more stable compounds such as hydroxide or complex compounds on the surface of hydrated silicate colloid C-H-S of the cement, but the method has the defects of weak integration capability, poor stability, weak adaptability to different types of fly ash, large capacity increment of the fly ash and large volume increment of landfill; secondly, a melting solidification method, which is the most safe and stable incineration fly ash stabilization/solidification technology recognized at present, mainly comprises the steps of mixing incineration fly ash and vitreous powder, granulating, molding, and melting for a period of time at the high temperature of 1000-1400 ℃, but the method has the defect of high energy consumption; thirdly, chemical agent stabilizing method, the chemical agent converts its ion into low solubility, low mobility macromolecule complex or inorganic mineral substance through chemical reaction with heavy metal, the core lies in the selection of chemical integrating agent, especially the selectivity of chemical agent to main pollution heavy metal ion, and the stability of generated complex, especially the leachability to acid solution; in the related technology, a chemical agent stabilization method is adopted, the adopted chelating agent is mostly a DTC chelating agent (dithiocarbamate is DTC for short), the chelating agent belongs to a non-high molecular compound, the unit molecular weight contains few complexing centers, and the leachable concentration of a complex generated by the chelating agent and heavy metal is high. Therefore, there is a need to provide a new process to solve the above technical problems.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a high-efficiency fly ash chelating agent which has high reaction speed, good chelating effect, safety and environmental protection and a preparation method thereof, and the specific scheme is as follows:
the invention relates to a high-efficiency fly ash chelating agent and a preparation method thereof, which is characterized in that: the material consists of the following raw materials in parts by mass: trimercapto-s-triazine: 5-10; compound sulfate: 8-15 parts of; sodium hexametaphosphate: 5-10; sodium dimethyldithiocarbamate: 25-35; water: 30-57; the preparation method comprises the following steps: (1) uniformly mixing trimercapto-s-triazine, composite sulfate, sodium hexametaphosphate and sodium dimethyldithiocarbamate according to the formula ratio to prepare a compound powdery solid mixture; (2) dissolving the compound powdery solid mixture in the step (1) in the water with the mixture ratio, uniformly stirring at the temperature of 30-60 ℃, keeping the stirring speed at 200-600r/min, and standing and filtering to obtain the compound powdery solid mixture.
In the technical scheme of the high-efficiency fly ash chelating agent and the preparation method thereof, the further preferable technical scheme is characterized in that:
1. the material consists of the following raw materials in parts by mass: 5 parts of trimercapto-s-triazine, 8 parts of compound sulfate, 5 parts of sodium hexametaphosphate, 25 parts of sodium dimethyldithiocarbamate and 30 parts of water;
2. the material consists of the following raw materials in parts by mass: 10 parts of trimercapto-s-triazine, 15 parts of composite sulfate, 10 parts of sodium hexametaphosphate, 35 parts of sodium dimethyldithiocarbamate and 57 parts of water;
3. the material consists of the following raw materials in parts by mass: trimercapto-s-triazine 7, compound sulfate 10, sodium hexametaphosphate 8, sodium dimethyldithiocarbamate 30 and water 42;
4. the compound sulfate is one or more of sodium sulfate, sodium sulfite, sodium metabisulfite and sodium thiosulfate;
5. the water is deionized water;
6. the temperature in the step (2) is 40 degrees, and the stirring speed is 400 r/min.
Compared with the prior art, the invention has the beneficial effects that: the fly ash can generate oxidation reduction reaction with high-valence heavy metal ions in the fly ash, so that the heavy metal ions are easy to chelate; can carry out chelation reaction with different heavy metal ions in the fly ash, and has high reaction speed and good chelation effect; is environment-friendly, safe and nontoxic.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Embodiment 1, a high-efficiency fly ash chelating agent and a preparation method thereof, which comprises the following raw materials in parts by mass: trimercapto-s-triazine: 5-10; compound sulfate: 8-15 parts of; sodium hexametaphosphate: 5-10; sodium dimethyldithiocarbamate: 25-35; water: 30-57; the preparation method comprises the following steps: (1) uniformly mixing trimercapto-s-triazine, composite sulfate, sodium hexametaphosphate and sodium dimethyldithiocarbamate according to the formula ratio to prepare a compound powdery solid mixture; (2) dissolving the compound powdery solid mixture in the step (1) in the water with the mixture ratio, uniformly stirring at the temperature of 30-60 ℃, keeping the stirring speed at 200-600r/min, and standing and filtering to obtain the compound powdery solid mixture. The invention relates to a chemical agent which is compounded with a plurality of heavy metal chelating agents according to the characteristics of heavy metal ions in fly ash; the trimercapto-s-triazine is a compound containing crystal water obtained by crystallization after cyanuric chloride reacts with sodium hydrosulfide and sodium hydroxide.
Example 2, the high efficiency fly ash sequestrant of example 1 and the method of preparation thereof: the material consists of the following raw materials in parts by mass: trimercapto-s-triazine 5, compound sulfate 8, sodium hexametaphosphate 5, sodium dimethyldithiocarbamate 25 and water 30.
Example 3, example 1 or 2 of the high efficiency fly ash sequestrant and method of preparation thereof: the material consists of the following raw materials in parts by mass: 10 parts of trimercapto-s-triazine, 15 parts of compound sulfate, 10 parts of sodium hexametaphosphate, 35 parts of sodium dimethyldithiocarbamate and 57 parts of water.
Example 4, the high efficiency fly ash sequestrant of any of examples 1-3 and the method of making the same: the material consists of the following raw materials in parts by mass: trimercapto-s-triazine 7, compound sulfate 10, sodium hexametaphosphate 8, sodium dimethyldithiocarbamate 30 and water 42.
Example 5, the high efficiency fly ash sequestrant of any of examples 1-4 and the method of making the same: the compound sulfate is one or more of sodium sulfate, sodium sulfite, sodium metabisulfite and sodium thiosulfate.
Example 6, the high efficiency fly ash sequestrant of any of examples 1-5 and the method of making the same: the water is deionized water.
Example 7, the high efficiency fly ash sequestrant of any of examples 1-6 and the method of making the same: the temperature in the step (2) is 40 degrees, and the stirring speed is 400 r/min.
Example 8, the high efficiency fly ash chelant and the method of making the same according to any of examples 1-7, wherein: uniformly mixing 50g of trimercapto-s-triazine, 30g of sodium sulfite, 50g of sodium metabisulfite, 50g of sodium hexametaphosphate and 250g of sodium dimethyldithiocarbamate to prepare a powdery solid mixture; and adding the powdery solid mixture obtained in the last step into 570g of deionized water, and stirring for 2 hours at the temperature of 30 ℃ and the stirring speed of 200r/min to obtain the fly ash chelating agent.
Example 9, the high efficiency fly ash chelant and the method of making the same according to any of examples 1-8: uniformly mixing 100g of trimercapto-s-triazine, 50g of sodium sulfite, 100g of sodium metabisulfite, 100g of sodium hexametaphosphate and 350g of sodium dimethyldithiocarbamate to prepare a powdery solid mixture; adding the powdery solid mixture obtained in the last step into 300g of deionized water, and stirring for 2 hours at the temperature of 30 ℃ and the stirring speed of 200r/min to obtain the fly ash chelating agent
Example 10, the high efficiency fly ash chelant and the method of making the same according to any of examples 1-9, wherein: uniformly mixing 80g of trimercapto-s-triazine, 40g of sodium sulfite, 120g of sodium metabisulfite, 80g of sodium hexametaphosphate and 300g of sodium dimethyldithiocarbamate to prepare a powdery solid mixture; and adding the powdery solid mixture obtained in the last step into 380g of deionized water, and stirring for 2 hours at the temperature of 40 ℃ and the stirring speed of 600r/min to obtain the fly ash chelating agent.
Example 11, using fly ash from a waste incineration power plant as an experimental object, examples 8 to 10 were tested, and the addition ratio of the fly ash chelating agent was 2.0% of the mass of the fly ash, and each group of chelating agents was mixed with 25% of the mass of the fly ash, and then added to the fly ash, and stirred for 30 minutes until the fly ash chelating agent and the fly ash fully reacted, and then the leaching concentrations of each heavy metal ion were measured as follows:
the method can be used for chelating different heavy metals in the fly ash well, and is short in reaction time, good in removal effect, convenient to operate, safe and environment-friendly; after the treatment by the chelating agent, the fly ash reaches the national domestic garbage landfill standard.
The above description is only for the preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution of the present invention and the inventive concept thereof within the scope of the present invention.
Claims (7)
1. An efficient fly ash chelating agent is characterized in that: the material consists of the following raw materials in parts by mass:
trimercapto-s-triazine: 5-10; compound sulfate: 8-15 parts of;
sodium hexametaphosphate: 5-10; sodium dimethyldithiocarbamate: 25-35;
water: 30-57; the preparation method comprises the following steps:
(1) uniformly mixing trimercapto-s-triazine, composite sulfate, sodium hexametaphosphate and sodium dimethyldithiocarbamate according to the formula ratio to prepare a compound powdery solid mixture;
(2) dissolving the compound powdery solid mixture in the step (1) in the water with the mixture ratio, uniformly stirring at the temperature of 30-60 ℃, keeping the stirring speed at 200-600r/min, and standing and filtering to obtain the compound powdery solid mixture.
2. The efficient fly ash chelating agent and the preparation method thereof according to claim 1, characterized by comprising the following raw materials in parts by mass: trimercapto-s-triazine 5, compound sulfate 8, sodium hexametaphosphate 5, sodium dimethyldithiocarbamate 25 and water 30.
3. The efficient fly ash chelating agent and the preparation method thereof according to claim 1, wherein the efficient fly ash chelating agent comprises: the material consists of the following raw materials in parts by mass: 10 parts of trimercapto-s-triazine, 15 parts of compound sulfate, 10 parts of sodium hexametaphosphate, 35 parts of sodium dimethyldithiocarbamate and 57 parts of water.
4. The efficient fly ash chelating agent and the preparation method thereof according to claim 1, wherein the efficient fly ash chelating agent comprises: the material consists of the following raw materials in parts by mass: trimercapto-s-triazine 7, compound sulfate 10, sodium hexametaphosphate 8, sodium dimethyldithiocarbamate 30 and water 42.
5. The efficient fly ash chelating agent and the preparation method thereof according to claim 1, wherein the efficient fly ash chelating agent comprises: the compound sulfate is one or more of sodium sulfate, sodium sulfite, sodium metabisulfite and sodium thiosulfate.
6. The efficient fly ash chelating agent and the preparation method thereof according to claim 1, wherein the efficient fly ash chelating agent comprises: the water is deionized water.
7. The efficient fly ash chelating agent and the preparation method thereof according to claim 1, wherein the efficient fly ash chelating agent comprises: the temperature in the step (2) is 40 degrees, and the stirring speed is 400 r/min.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111773606A (en) * | 2020-07-09 | 2020-10-16 | 江苏堃兮环保科技有限公司 | Novel efficient fly ash chelating agent and preparation method thereof |
| CN112402889A (en) * | 2020-06-22 | 2021-02-26 | 北京中科润宇环保科技股份有限公司 | Chelating agent |
| CN114632283A (en) * | 2022-02-11 | 2022-06-17 | 江西鸿运环保科技有限公司 | Efficient fly ash chelating agent and preparation method thereof |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004004464A1 (en) * | 2002-07-10 | 2004-01-15 | University Of North Carolina At Chapel Hill | Novel rho inhibitors |
| CN102642879A (en) * | 2012-04-27 | 2012-08-22 | 环境保护部华南环境科学研究所 | Method for treating landfill leachate and waste incineration fly ash simultaneously by adopting formulation and synergistic technology |
| CN104531159A (en) * | 2014-12-09 | 2015-04-22 | 成都新朝阳作物科学有限公司 | Soil repairing agent and preparation method thereof |
| CN104560047A (en) * | 2014-12-03 | 2015-04-29 | 成都新朝阳作物科学有限公司 | Soil heavy mental passivator and application thereof |
| CN104761039A (en) * | 2014-12-15 | 2015-07-08 | 广西冶金研究院 | Composite chelating agent used for treating cadmium-containing waste water and application method thereof |
| CN105368458A (en) * | 2015-12-08 | 2016-03-02 | 江苏盖亚环境工程有限公司 | Heavy metal contaminated soil remediation material and preparation method thereof |
| 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 |
| CN105582638A (en) * | 2016-01-11 | 2016-05-18 | 永清环保股份有限公司 | Liquid stabilizer for treatment of waste incineration fly ash high in lead and cadmium content and application thereof |
| CN106377866A (en) * | 2016-08-15 | 2017-02-08 | 南京鑫豪高分子材料有限公司 | Heavy metal chelating agent |
| CN106430484A (en) * | 2016-10-13 | 2017-02-22 | 无锡普立顺环保科技有限公司 | Efficient heavy metal trapping agent |
| CN106955451A (en) * | 2017-02-27 | 2017-07-18 | 湖南云平环保科技有限公司 | Incineration of refuse flyash heavy metal chelant and preparation method thereof |
| 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 |
| CN108641726A (en) * | 2018-04-23 | 2018-10-12 | 永清环保股份有限公司 | A kind of compound drug of restoration of soil polluted by heavy metal and its application |
| CN108704238A (en) * | 2018-07-26 | 2018-10-26 | 安徽安江环保科技有限公司 | A kind of flying dust chelating modifying agent and preparation method thereof |
| CN108865168A (en) * | 2018-08-24 | 2018-11-23 | 广州市环境保护工程设计院有限公司 | A kind of heavy-metal contaminated soil renovation agent and preparation method thereof |
| CN109011319A (en) * | 2018-06-29 | 2018-12-18 | 南通乐尔环保科技有限公司 | A kind of incineration of refuse flyash processing chelating agent |
| CN109126011A (en) * | 2018-06-28 | 2019-01-04 | 内蒙古益兴环保工程有限公司 | Handle the medicament of flying ash |
| CN109180380A (en) * | 2018-09-27 | 2019-01-11 | 湖南新九方科技有限公司 | A kind of soil-repairing agent and preparation method thereof |
| US20190031832A1 (en) * | 2017-07-25 | 2019-01-31 | Massachusetts Institute Of Technology | Polymers for Selective Heavy Metal Removal |
| CN109913223A (en) * | 2019-03-29 | 2019-06-21 | 武汉强丰新特科技有限公司 | A kind of soil-repairing agent and its application method |
| CN110090384A (en) * | 2019-05-22 | 2019-08-06 | 武汉古锐恩环保科技有限公司 | A kind of compound incineration of refuse flyash heavy metal chelant and preparation method thereof |
-
2019
- 2019-09-20 CN CN201910890198.8A patent/CN111265810A/en active Pending
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004004464A1 (en) * | 2002-07-10 | 2004-01-15 | University Of North Carolina At Chapel Hill | Novel rho inhibitors |
| CN102642879A (en) * | 2012-04-27 | 2012-08-22 | 环境保护部华南环境科学研究所 | Method for treating landfill leachate and waste incineration fly ash simultaneously by adopting formulation and synergistic technology |
| CN104560047A (en) * | 2014-12-03 | 2015-04-29 | 成都新朝阳作物科学有限公司 | Soil heavy mental passivator and application thereof |
| CN104531159A (en) * | 2014-12-09 | 2015-04-22 | 成都新朝阳作物科学有限公司 | Soil repairing agent and preparation method thereof |
| CN104761039A (en) * | 2014-12-15 | 2015-07-08 | 广西冶金研究院 | Composite chelating agent used for treating cadmium-containing waste water and application method thereof |
| CN105368458A (en) * | 2015-12-08 | 2016-03-02 | 江苏盖亚环境工程有限公司 | Heavy metal contaminated soil remediation material and preparation method thereof |
| 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 |
| CN105582638A (en) * | 2016-01-11 | 2016-05-18 | 永清环保股份有限公司 | Liquid stabilizer for treatment of waste incineration fly ash high in lead and cadmium content and application thereof |
| CN106377866A (en) * | 2016-08-15 | 2017-02-08 | 南京鑫豪高分子材料有限公司 | Heavy metal chelating agent |
| CN106430484A (en) * | 2016-10-13 | 2017-02-22 | 无锡普立顺环保科技有限公司 | Efficient heavy metal trapping agent |
| CN106955451A (en) * | 2017-02-27 | 2017-07-18 | 湖南云平环保科技有限公司 | Incineration of refuse flyash heavy metal chelant and preparation method thereof |
| US20190031832A1 (en) * | 2017-07-25 | 2019-01-31 | Massachusetts Institute Of Technology | Polymers for Selective Heavy Metal Removal |
| 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 |
| CN108641726A (en) * | 2018-04-23 | 2018-10-12 | 永清环保股份有限公司 | A kind of compound drug of restoration of soil polluted by heavy metal and its application |
| CN109126011A (en) * | 2018-06-28 | 2019-01-04 | 内蒙古益兴环保工程有限公司 | Handle the medicament of flying ash |
| CN109011319A (en) * | 2018-06-29 | 2018-12-18 | 南通乐尔环保科技有限公司 | A kind of incineration of refuse flyash processing chelating agent |
| CN108704238A (en) * | 2018-07-26 | 2018-10-26 | 安徽安江环保科技有限公司 | A kind of flying dust chelating modifying agent and preparation method thereof |
| CN108865168A (en) * | 2018-08-24 | 2018-11-23 | 广州市环境保护工程设计院有限公司 | A kind of heavy-metal contaminated soil renovation agent and preparation method thereof |
| CN109180380A (en) * | 2018-09-27 | 2019-01-11 | 湖南新九方科技有限公司 | A kind of soil-repairing agent and preparation method thereof |
| CN109913223A (en) * | 2019-03-29 | 2019-06-21 | 武汉强丰新特科技有限公司 | A kind of soil-repairing agent and its application method |
| CN110090384A (en) * | 2019-05-22 | 2019-08-06 | 武汉古锐恩环保科技有限公司 | A kind of compound incineration of refuse flyash heavy metal chelant and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 竹涛: "《矿山固体废物处理与处置工程》", 30 June 2016, 冶金工业出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112402889A (en) * | 2020-06-22 | 2021-02-26 | 北京中科润宇环保科技股份有限公司 | Chelating agent |
| CN111773606A (en) * | 2020-07-09 | 2020-10-16 | 江苏堃兮环保科技有限公司 | Novel efficient fly ash chelating agent and preparation method thereof |
| CN114632283A (en) * | 2022-02-11 | 2022-06-17 | 江西鸿运环保科技有限公司 | Efficient fly ash chelating agent and preparation method thereof |
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Application publication date: 20200612 |