WO2018133046A1 - Agent de déacidification et de chélation des cendres volantes d'incinération de déchets et son procédé de préparation - Google Patents

Agent de déacidification et de chélation des cendres volantes d'incinération de déchets et son procédé de préparation Download PDF

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Publication number
WO2018133046A1
WO2018133046A1 PCT/CN2017/071985 CN2017071985W WO2018133046A1 WO 2018133046 A1 WO2018133046 A1 WO 2018133046A1 CN 2017071985 W CN2017071985 W CN 2017071985W WO 2018133046 A1 WO2018133046 A1 WO 2018133046A1
Authority
WO
WIPO (PCT)
Prior art keywords
fly ash
waste incineration
deacidification
deacidifying
calcium sulfate
Prior art date
Application number
PCT/CN2017/071985
Other languages
English (en)
Chinese (zh)
Inventor
赵晓峰
沈竑
孔华
谭巍
叶宇洋
刘红
Original Assignee
深圳市能源环保有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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
Priority to PCT/CN2017/071985 priority Critical patent/WO2018133046A1/fr
Publication of WO2018133046A1 publication Critical patent/WO2018133046A1/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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
    • B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless

Definitions

  • the invention relates to a waste incineration fly ash treatment medicament, in particular to a waste incineration fly ash deacidification chelate medicament and a preparation method thereof.
  • Waste incineration power plants need to deacidify the flue gas generated during waste incineration.
  • the dry deacidification system is very mature, mainly using baking soda (sodium bicarbonate) or slaked lime (calcium hydroxide) as deacidification agent.
  • the deacidification powder is atomized by air into a flue gas by compressed air or a Roots blower to achieve deacidification, and then the fly ash is collected by a fly ash collection and delivery system.
  • the waste incineration power plant must also perform chelation treatment on the collected fly ash.
  • the fly ash collected by the municipal solid waste incineration power plant should be chelated and chelated, and after treatment, it meets the requirements of GB16889-2008. After reaching the standard, it will be sent to the sanitary landfill for landfill. Therefore, it is necessary to set up a complete set of fly ash chelation processing equipment after the fly ash collection bin of the waste incineration power plant, including fly ash storage bins, weighing equipment, mixing equipment, packing equipment, loading equipment, etc., for chelation of fly ash. deal with. In addition to the cost of the chelating agent, the cost of equipment operation, labor, water and electricity, overhaul, packaging, etc.
  • fly ash chelate needs to be cured for 3-5 days before it leaves the factory. It requires a large amount of temporary storage space and consumes a large amount of secondary reverse loading and transportation workload.
  • the existing waste incineration power plant first needs to deacidify the flue gas, and then the chelated treatment of the collected fly ash.
  • the deacidification and chelation treatment must be carried out in two steps, adding Operating costs of waste incineration power plants.
  • the present invention provides a detoxification fly ash deacidification chelate agent having a deacidification chelation function, which comprises baking soda, slaked lime, magnesium chloride, magnesium oxide, calcium dihydrogen phosphate, calcium sulfate, and sulfurization.
  • the composition of sodium and other substances the content of each component by weight: baking soda 20-30%, slaked lime 20-30%, magnesium chloride 5-10%, magnesium oxide 15-25%, calcium dihydrogen phosphate 1-3%, sulfuric acid Calcium 5-10%, sodium sulfide 3-5%; at the same time, the present invention also provides a method for preparing a waste incineration fly ash deacidification chelate agent having deacidification chelation function, which comprises the following steps: The above substances are weighed according to the weight percentage. In the second step, the calcium sulfate is ground to a fineness of 200 mesh, and used; the baking soda is ground to 600 mesh, and the second step is to 200 mesh fineness.
  • Slaked lime and magnesium oxide are used as the base material and the two are thoroughly mixed; in the fourth step, the calcium sulfate after the second step is added to the mixture of the third step and thoroughly mixed; the fifth step, magnesium chloride, calcium dihydrogen phosphate And sodium sulfide is added to the mixture of step four, the first Step, the step of baking soda was added to the mixture and thoroughly stirred for five complete mix was prepared.
  • the technical solution adopted by the present invention to solve the technical problem thereof is: a waste incineration fly ash deacidification chelate agent having a deacidification chelation function, characterized in that the waste incineration fly ash having deacidification and chelation function is off
  • the acid chelation agent is composed of baking soda, slaked lime, magnesium chloride, magnesium oxide, calcium dihydrogen phosphate, calcium sulfate, sodium sulfide, etc., and the contents of each component by weight are: baking soda 20-30%, slaked lime 20-30 %, magnesium chloride 5-10%, magnesium oxide 15-25%, calcium dihydrogen phosphate 1-3%, calcium sulfate 5-10%, sodium sulfide 3-5%.
  • the invention relates to a method for preparing a waste incineration fly ash deacidification chelating agent with deacidification chelation function, which comprises the following steps: firstly, firstly weigh baking soda, slaked lime, magnesium chloride, magnesium oxide and calcium dihydrogen phosphate respectively.
  • the components are: by weight percentage: baking soda 20-30%, slaked lime 20-30%, magnesium chloride 5-10%, magnesium oxide 15-25%, calcium dihydrogen phosphate 1 -3%, 5-10% calcium sulfate, 3-5% sodium sulfide; the second step, grinding calcium sulfate to a fineness of 200 mesh, standby; grinding the baking soda to 600 mesh, standby; the third step, 200 mesh fine slaked lime, magnesium oxide as the base material and fully mix the two; the fourth step, the step 2 grinding calcium sulfate is added to the mixture of step three and fully mixed; the fifth step, the magnesium chloride Calcium dihydrogen phosphate, sodium sulfide is added to the mixture of step four, and in the sixth step, baking soda is added to the mixture of step five and thoroughly stirred to complete the preparation.
  • the invention has the beneficial effects of the present invention: a detoxification and chelating agent for waste incineration fly ash having deacidification and chelation function has the function of deacidification and sequestration, and can carry out the current waste incineration power plant in two processes.
  • the flue gas deacidification and fly ash sequestration treatment are integrated in one process, which can effectively reduce the operating cost of the waste incineration power plant.
  • a waste incineration fly ash deacidification chelate agent with deacidification and chelation function the components and percentages thereof are as follows:
  • the preparation method of the above-mentioned waste incineration fly ash stabilization agent is as follows:
  • the invention relates to a method for preparing a waste incineration fly ash deacidification chelating agent with deacidification chelation function, which comprises the following steps: first step, weighing the above substances according to the weight percentage in the table, the second step, Grinding the calcium sulfate to a fineness of 200 mesh, standby; grinding the baking soda to 600 mesh, standby; the third step, using 200 mesh fineness of slaked lime, magnesium oxide as a primer and fully mixing the two; fourth Step, adding the calcium sulfate after the second step to the mixture of the third step and thoroughly mixing; in the fifth step, adding magnesium chloride, calcium dihydrogen phosphate, sodium sulfide to the mixture of the fourth step, the sixth step, the small The soda is added to the mixture of the step 5 and thoroughly stirred and mixed to prepare a 100 KG waste incineration fly ash deacidification chelating agent.
  • a waste incineration fly ash deacidification chelate agent with deacidification and chelation function the components and percentages thereof are as follows:
  • the preparation method is as in Example 1.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

L'invention concerne un agent de désacidification et de chélation des cendres volantes d'incinération de déchets qui a des fonctions de désacidification et de chélation. Les teneurs des composants de l'agent en poids sont: 20-30% de bicarbonate de sodium, 20-30% de chaux hydratée, 5-10% de chlorure de magnésium, 15-25% d'oxyde de magnésium, 1-3% de phosphate mono-calcique, 5-10% de sulfate de calcium et 3-5% de sulfure de sodium. L'invention concerne également un procédé de préparation d'un agent de désacidification et de chélation des cendres volantes d'incinération de déchets ayant des fonctions de désacidification et de chélation. L'agent présente des fonctions de désacidification et de chélation, et peut intégrer, en un procédé, la désacidification de la fumée et la chélation des cendres volantes qui sont effectuées dans deux procédés distincts dans des centrales électriques d'incinération de déchets existantes, de façon à réduire efficacement les coûts de fonctionnement des centrales électriques d'incinération de déchets.
PCT/CN2017/071985 2017-01-20 2017-01-20 Agent de déacidification et de chélation des cendres volantes d'incinération de déchets et son procédé de préparation WO2018133046A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/071985 WO2018133046A1 (fr) 2017-01-20 2017-01-20 Agent de déacidification et de chélation des cendres volantes d'incinération de déchets et son procédé de préparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2017/071985 WO2018133046A1 (fr) 2017-01-20 2017-01-20 Agent de déacidification et de chélation des cendres volantes d'incinération de déchets et son procédé de préparation

Publications (1)

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WO2018133046A1 true WO2018133046A1 (fr) 2018-07-26

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PCT/CN2017/071985 WO2018133046A1 (fr) 2017-01-20 2017-01-20 Agent de déacidification et de chélation des cendres volantes d'incinération de déchets et son procédé de préparation

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WO (1) WO2018133046A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112316352A (zh) * 2020-09-08 2021-02-05 馆陶县晴美环保科技有限公司 一种用于固化垃圾焚烧飞灰的组合物及其制备方法与应用
CN113975703A (zh) * 2021-11-05 2022-01-28 神美科技有限公司 一种垃圾焚烧飞灰重金属螯合剂及其制备方法
CN114307030A (zh) * 2021-03-10 2022-04-12 江苏海默环保科技有限公司 飞灰重金属固化剂及其制备方法、飞灰处理方法
WO2023103718A1 (fr) * 2021-12-09 2023-06-15 深圳市深能环保东部有限公司 Procédé de mesure de teneur en éléments de métaux lourds dans des cendres volantes de centrales d'ordures ménagères

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070213577A1 (en) * 2006-03-10 2007-09-13 Keith Edward Forrester Method for stabilization of hazardous wastes with dilute acid semi-soluble dicalcium phosphate dihydrate powder
CN101972766A (zh) * 2010-08-30 2011-02-16 天津渤海环保工程有限公司 一种垃圾焚烧飞灰固化/稳定化处理方法
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
CA2934215A1 (fr) * 2013-12-20 2015-06-25 Ecophos S.A. Procede de valorisation de cendres issues de l'incineration de dechets
CN105289230A (zh) * 2015-09-16 2016-02-03 天津壹鸣环境科技股份有限公司 垃圾焚烧飞灰综合稳定化处理技术
CN106824985A (zh) * 2017-01-20 2017-06-13 深圳市能源环保有限公司 一种垃圾焚烧飞灰脱酸螯合药剂及其制备方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070213577A1 (en) * 2006-03-10 2007-09-13 Keith Edward Forrester Method for stabilization of hazardous wastes with dilute acid semi-soluble dicalcium phosphate dihydrate powder
CN101972766A (zh) * 2010-08-30 2011-02-16 天津渤海环保工程有限公司 一种垃圾焚烧飞灰固化/稳定化处理方法
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
CA2934215A1 (fr) * 2013-12-20 2015-06-25 Ecophos S.A. Procede de valorisation de cendres issues de l'incineration de dechets
CN105289230A (zh) * 2015-09-16 2016-02-03 天津壹鸣环境科技股份有限公司 垃圾焚烧飞灰综合稳定化处理技术
CN106824985A (zh) * 2017-01-20 2017-06-13 深圳市能源环保有限公司 一种垃圾焚烧飞灰脱酸螯合药剂及其制备方法

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112316352A (zh) * 2020-09-08 2021-02-05 馆陶县晴美环保科技有限公司 一种用于固化垃圾焚烧飞灰的组合物及其制备方法与应用
CN114307030A (zh) * 2021-03-10 2022-04-12 江苏海默环保科技有限公司 飞灰重金属固化剂及其制备方法、飞灰处理方法
CN113975703A (zh) * 2021-11-05 2022-01-28 神美科技有限公司 一种垃圾焚烧飞灰重金属螯合剂及其制备方法
WO2023103718A1 (fr) * 2021-12-09 2023-06-15 深圳市深能环保东部有限公司 Procédé de mesure de teneur en éléments de métaux lourds dans des cendres volantes de centrales d'ordures ménagères

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