WO2014079221A1 - Réactif permettant de traiter des cendres volantes pendant une incinération de déchets - Google Patents

Réactif permettant de traiter des cendres volantes pendant une incinération de déchets Download PDF

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Publication number
WO2014079221A1
WO2014079221A1 PCT/CN2013/079498 CN2013079498W WO2014079221A1 WO 2014079221 A1 WO2014079221 A1 WO 2014079221A1 CN 2013079498 W CN2013079498 W CN 2013079498W WO 2014079221 A1 WO2014079221 A1 WO 2014079221A1
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WO
WIPO (PCT)
Prior art keywords
fly ash
heavy metal
activation
composite phosphate
weight
Prior art date
Application number
PCT/CN2013/079498
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English (en)
Chinese (zh)
Inventor
赵晓峰
吴燕琦
杨蕾
刘红
Original Assignee
深圳市能源环保有限公司
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Application filed by 深圳市能源环保有限公司 filed Critical 深圳市能源环保有限公司
Publication of WO2014079221A1 publication Critical patent/WO2014079221A1/fr

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Classifications

    • 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
    • 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
    • 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
    • A62D2101/20—Organic substances
    • A62D2101/24—Organic substances containing heavy metals
    • 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
    • A62D2101/40—Inorganic substances
    • A62D2101/43—Inorganic substances containing heavy metals, in the bonded or free state

Definitions

  • the invention relates to a waste incineration fly ash treatment technology, in particular to a waste incineration fly ash treatment medicament.
  • Fly ash from waste incineration is a kind of hazardous waste. It contains heavy metals such as lead, cadmium, mercury and chromium, and persistent organic pollutants such as dioxins, which are extremely harmful to human health and the environment. Therefore, proper disposal of fly ash is of great significance for protecting the health of the citizens and promoting sustainable economic development.
  • the harmless treatment method includes a chemical treatment method and a melting method.
  • domestic fly ash processing technology is still in its infancy, and most of them cite chelating agents abroad for the treatment of fly ash.
  • the process has obvious effect on the general fly ash and the process is simple, but the method of adding the chelating agent to the fly ash harmless treatment has poor treatment effect on the high heavy metal fly ash, and the treatment cost is high due to the high price of the chelating agent. Not suitable for large-scale promotion of applications.
  • Waste incineration fly ash has a high content of heavy metals. In addition to heavy metals, it also contains a large amount of calcium Ca and magnesium. Conventional chelating agents do not effectively distinguish between calcium, magnesium and heavy metal elements, resulting in the wasting of effective chelating coordination bonds and the low capture rate of heavy metals.
  • the diacid salt is also a kind of chelating agent. The traditional diacid salt has no selectivity for heavy metal elements, most of which react with calcium and magnesium elements, and only a small part reacts with heavy metal ions, so the capture efficiency is low.
  • the invention relates to a waste incineration fly ash treatment agent, which combines an activation component and a composite diacid salt, and the activated component reduces the reactivity of calcium ions and magnesium ions by activating the reaction activity of heavy gold ions during the treatment process to make the composite compound
  • the diacid salt can fully react with heavy metal ions, greatly enhancing the heavy metal capture efficiency of the composite diacid salt.
  • the compound pity salt is a mixture of various piti compounds, including pity, dihydro acid dihydrogen salt and the like.
  • the combination of the compounded acid salt and the active ingredient not only improves the efficiency of heavy metal capture, but also has the advantage of low cost.
  • the invention relates to a waste incineration fly ash treatment agent, which comprises the following components: activation component, composite Phosphate component, solidification component (Sol idification) and auxiliary component, herein referred to as APS fly Ash treatment of harmless chemicals.
  • the technical solution adopted by the present invention is a waste incineration fly ash treatment agent containing the following components by weight: 20% _60% Active ingredient (Activation), 15% - 50% complex pity salt composition (Recombinant Phosphate) ), 20% - 50% curing component (Sol idification), 1% - 5% auxiliary component;
  • the activation component contains the following components by weight: 40%_70% Ca (0H) 2 , 20% _50% baking soda, 10% _30% baking soda;
  • the composite phosphorate component (Composite Phosphate) contains the following components by weight: 70% _90% sodium dihydrogen or sodium pate, 10% _30% sodium thiosulfate;
  • the solidification molding component (Solidification) is a Portland cement;
  • the auxiliary component comprises the following components by weight: 20% _ 40% conventional dye, 60% _ 80% desiccant;
  • fly ash treatment In the case of fly ash treatment, the fly ash is mixed with the fly ash treatment agent and water, and after being fully stirred and loaded and maintained for 24 hours to 48 hours, it is sent to the landfill for landfill; the ratio of the addition is by weight: fly ash is 100 parts, 10-30 parts of fly ash treatment agent, and 15-30 parts of water.
  • the invention has the beneficial effects that the APS fly ash treatment harmless chemical agent proposed by the invention has the effect of reducing the reactivity of the heavy gold ions during the treatment by the activation component and the composite diacid salt.
  • the reactivity of calcium ions and magnesium ions enables the complex pity acid salt to fully react with heavy metal ions, which greatly enhances the heavy metal capture efficiency of the composite pity acid salt.
  • the treated fly ash can meet the pollution control standard of domestic waste landfill. (GB16889-2008) entry requirements; on the other hand, it also has a price advantage, fly ash processing costs are low.
  • Fig. 1 is a flow chart showing the process of detoxification treatment of an APS detoxifying agent proposed by the present invention. detailed description
  • a waste incineration fly ash treatment agent containing the following components by weight: 20% _60% activation component (Activation), 15%-50% composite Phosphate component, 20% - 50% curing molding component (Sol idification ) , 1% - 5% auxiliary component;
  • the activation component (Activation) contains the following components by weight: 40%_70% Ca (0H) 2 , 20% _50% baking soda, 10% _30% small soda;
  • the composite phosphorate component (Composite Phosphate) contains the following components by weight: 70% _90% sodium dihydrogen or sodium pate, 10% _30% sodium thiosulfate;
  • the solidification molding component (Solidification) is a Portland cement
  • the auxiliary component contains the following ingredients by weight: 20% to 40% conventional dye, 60% to 80% desiccant.
  • Fig. 1 is a flow chart showing the process of harmless treatment of waste incineration fly ash by using APS fly ash treatment harmless chemical agent proposed by the invention.
  • the figure shows that when the fly ash treatment is carried out, the APS fly ash is added to the fly ash to treat the harmless chemical and water. After fully stirring, and then the vehicle is cured for 24 hours to 48 hours, the fly ash can be sent to the landfill. Field landfill; the ratio of addition is by weight: 100 parts of fly ash, 10-30 parts of APS fly ash treatment, and 15-30 parts of water.
  • the existing fly ash treatment technology is difficult to overcome the high heavy metal content fly ash.
  • lead (Pb) the lead leaching toxicity of the original urban fly ash is mostly 1-5 mg/L, while some industrial developed cities such as Shenzhen and Suzhou are due to Domestic garbage contains a large amount of industrial waste, and the heavy metal content is much higher than that of ordinary cities.
  • the lead element Shenzhen Baoan is as high as 50-100 mg/L 0 and the Domestic Waste Landfill Pollution Control Standard (GB 16889 - 2008) lead leaching toxicity index It is 0.25 mg/L, and the removal efficiency of high-weight metal fly ash is more than 99%. This efficiency is difficult to achieve with fly ash treatment technology.
  • the technology can be applied to the above high-heavy metal content fly ash, and the average removal efficiency of high-heavy metal elements can reach: Copper 99%, cadmium 99. 67%, lead 99. 87%, zinc 99. 96%, cadmium 99. 67%. It proves that the technology can maintain effectiveness and stability when used in high heavy metal fly ash.
  • the annual fly ash amount is calculated according to 8000h
  • the use of APS harmless technology for the current situation of Nanshan waste-to-energy plant, can save processing costs of 8.8 million yuan per year, compared with the current chelating agent technology, can still save 800,000 yuan per year.
  • the annual processing cost can be saved by 4.95 million yuan, which can save 900,000 yuan per year compared with the current chelating agent technology.
  • the annual processing cost can be saved by 12 million yuan, which can save 3.6 million yuan per year compared with the current chelating agent technology.
  • the three plants can save 25.75 million yuan per year compared to the dangerous landfill, which saves 5.3 million yuan per year compared to the current chelating agent technology.
  • the APS harmless technology reflects good economic benefits regardless of safe landfill or current chelating agent technology.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

L'objet de l'invention est de résoudre le problème associé au procédé utilisant des chélateurs, notamment des phosphates, pour le traitement inoffensif de cendres volantes, ce procédé ayant un effet négatif sur les cendres volantes étant donné qu'elles présentent une teneur élevée en métaux lourds. Cet objectif est atteint par un réactif destiné à traiter les cendres volantes pendant l'incinération de déchets, lequel utilise l'action combinée d'une activation et d'un phosphate composite. L'activation diminue la réactivité de l'ion calcium et de l'ion magnésium par activation de la réactivité des ions des métaux lourds pendant le traitement, de sorte que le phosphate composite peut pleinement réagir avec les ions des métaux lourds, ce qui améliore considérablement l'efficacité de la capture des métaux lourds du phosphate composite. Le réactif permettant de traiter les cendres volantes pendant l'incinération des déchets et fourni par la présente invention comprend les ingrédients suivants en poids : 20 %-60 % d'une activation (activation), 15 %-50 % d'un phosphate composite (phosphate composite), 20 %-50 % d'une solidification (solidification) et 1 %-5 % d'un ingrédient auxiliaire. Le phosphate composite est formé par mélange de multiples composés contenant du phosphore, notamment un phosphate, un phosphate dihydrique, etc. Le phosphate composite agit conjointement avec l'activation, ce qui améliore non seulement l'efficacité de la capture des métaux lourds, mais présente également l'avantage d'être peu onéreux.
PCT/CN2013/079498 2012-11-22 2013-07-17 Réactif permettant de traiter des cendres volantes pendant une incinération de déchets WO2014079221A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201210476922.0 2012-11-22
CN201210476922.0A CN102974068B (zh) 2012-11-22 2012-11-22 一种垃圾焚烧飞灰处理药剂

Publications (1)

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WO2014079221A1 true WO2014079221A1 (fr) 2014-05-30

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CN (1) CN102974068B (fr)
WO (1) WO2014079221A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102974068B (zh) * 2012-11-22 2015-12-23 深圳市能源环保有限公司 一种垃圾焚烧飞灰处理药剂
WO2018120051A1 (fr) * 2016-12-30 2018-07-05 深圳市能源环保有限公司 Agent stabilisateur de cendres volantes pour l'incinération de déchets et procédé de préparation associé
WO2018133046A1 (fr) * 2017-01-20 2018-07-26 深圳市能源环保有限公司 Agent de déacidification et de chélation des cendres volantes d'incinération de déchets et son procédé de préparation
CN106943704A (zh) * 2017-02-27 2017-07-14 湖南云平环保科技有限公司 有机磷酸盐重金属螯合剂
CN110672538A (zh) * 2019-11-13 2020-01-10 辽宁石油化工大学 一种利用磷酸盐溶液降低焚烧飞灰中重金属离子铅含量的方法
CN114345114A (zh) * 2021-12-27 2022-04-15 深圳能源环保股份有限公司 一种垃圾焚烧炉烟气脱酸及飞灰双效处理的方法

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JP2003190907A (ja) * 2001-12-25 2003-07-08 Mitsubishi Heavy Ind Ltd 難分解性物質の処理方法及びその装置
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CN102312101A (zh) * 2011-08-22 2012-01-11 同济大学 一种处理飞灰中重金属的萃取剂及其萃取重金属的方法
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CN102772978A (zh) * 2012-07-06 2012-11-14 许俊 一种飞灰处理方法
CN102974068A (zh) * 2012-11-22 2013-03-20 深圳市能源环保有限公司 一种垃圾焚烧飞灰处理药剂

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JP2002194328A (ja) * 2000-12-26 2002-07-10 Mitsubishi Rayon Co Ltd 重金属固定化剤およびそれを用いた重金属固定化方法
JP2003190907A (ja) * 2001-12-25 2003-07-08 Mitsubishi Heavy Ind Ltd 難分解性物質の処理方法及びその装置
CN102303036A (zh) * 2011-07-06 2012-01-04 东江环保股份有限公司 碱激发固化稳定处理垃圾焚烧飞灰的方法
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CN102312101A (zh) * 2011-08-22 2012-01-11 同济大学 一种处理飞灰中重金属的萃取剂及其萃取重金属的方法
CN102772978A (zh) * 2012-07-06 2012-11-14 许俊 一种飞灰处理方法
CN102974068A (zh) * 2012-11-22 2013-03-20 深圳市能源环保有限公司 一种垃圾焚烧飞灰处理药剂

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CN102974068A (zh) 2013-03-20

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