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WO2018133046A1 - Waste incineration fly ash deacidifying and chelating agent and preparation method therefor - Google Patents

Waste incineration fly ash deacidifying and chelating agent and preparation method therefor 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
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Prior art keywords
fly ash
waste incineration
deacidification
deacidifying
calcium sulfate
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Ceased
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PCT/CN2017/071985
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French (fr)
Chinese (zh)
Inventor
赵晓峰
沈竑
孔华
谭巍
叶宇洋
刘红
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Shenzhen Energy Environmental Engineering Co Ltd
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Shenzhen Energy Environmental Engineering Co Ltd
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Priority to PCT/CN2017/071985 priority Critical patent/WO2018133046A1/en
Publication of WO2018133046A1 publication Critical patent/WO2018133046A1/en
Anticipated expiration legal-status Critical
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    • 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
    • B09B3/70—Chemical treatment, e.g. pH adjustment or oxidation
    • 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

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

Abstract

A waste incineration fly ash deacidifying and chelating agent having deacidifying and chelating functions. The contents of the components of the agent by weight are: 20-30% of sodium bicarbonate, 20-30% of hydrated lime, 5-10% of magnesium chloride, 15-25% of magnesium oxide, 1-3% of monocalcium phosphate, 5-10% of calcium sulfate, and 3-5% of sodium sulfide. Also provided is a method for preparing a waste incineration fly ash deacidifying and chelating agent having deacidifying and chelating functions. The agent has deacidifying and chelating functions, and can integrate, in a process, smoke deacidifying and fly ash chelating which need to be carried out in two processes in existing waste incineration power plants, so as to effectively reduce operating costs of the waste incineration power plants.

Description

一种垃圾焚烧飞灰脱酸螯合药剂及其制备方法Waste incineration fly ash deacidification chelation agent and preparation method thereof 技术领域Technical field

本发明涉及一种垃圾焚烧飞灰处理药剂，尤其是涉及一种垃圾焚烧飞灰脱酸螯合药剂及其制备方法。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.

背景技术Background technique

垃圾焚烧发电厂需要对垃圾焚烧过程中产生的烟气进行脱酸处理，目前，干法脱酸系统已经非常成熟，主要采用小苏打(碳酸氢钠)或消石灰(氢氧化钙)作为脱酸剂，采用压缩空气或罗茨鼓风机将脱酸剂粉末经空气雾化后喷入烟气中实现脱酸，然后通过飞灰收集和输送系统对飞灰进行收集。Waste incineration power plants need to deacidify the flue gas generated during waste incineration. At present, 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.

另一方面，垃圾焚烧发电厂对收集后的飞灰还必须进行螯合处理。生活垃圾焚烧发电厂收集后的飞灰应当加入螯合进行螯合处理，处理后达到GB16889-2008的要求，达标后送入卫生填埋场进行填埋。因此需要在垃圾焚烧发电厂飞灰收集仓后设置一整套飞灰螯合处理设备，包含飞灰储仓、称重设备、搅拌设备、打包设备，装车设备等，用于飞灰的螯合处理。费用上除螯合剂费用外，还要额外加上每吨100-200元的设备运营、人工、水电、检修、打包等费用。处理完后，飞灰螯合物还需养护3-5天后才能出厂。需要占用较大的暂存空间，并耗费大量的二次倒运装车运输工作量。On the other hand, 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. of 100-200 yuan per ton is added. After the treatment, the 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.

从目前情况来看，现有垃圾焚烧发电厂首先需要对烟气进行脱酸处理、然后还要对收集的飞灰进行螯合处理，脱酸和螯合处理必须分两个工序进行，增加了垃圾焚烧发电厂的运营成本。From the current situation, 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.

发明内容Summary of the invention

为了解决上述问题，本发明提出一种具有脱酸螯合功能的垃圾焚烧飞灰脱酸螯合药剂，所述药剂由小苏打、消石灰、氯化镁、氧化镁、磷酸二氢钙、硫酸钙、硫化钠等物质组成，以重量计各成分的含量为：小苏打20-30％、消石灰20-30％、氯化镁5-10％、氧化镁15-25％、磷酸二氢钙1-3％、硫酸钙5-10％、硫化钠3-5％；同时，本发明还提出一种制备具有脱酸螯合功能的垃圾焚烧飞灰脱酸螯合药剂的方法，其特征包含以下步骤：第一步、按重量百分比计分别称取上述各项物质，第二步、将硫酸钙研磨至细度为200目，备用；将小苏打研磨至600目，备用；第三步、将200目细度的消石灰、氧化镁作为底料并将两者充分混匀；第四步、将步骤二研磨后的硫酸钙加入到步骤三的混合物中并充分混匀；第五步、将氯化镁、磷酸二氢钙、硫化钠加入到步骤四的混合物中，第六步、将小苏打加入到步骤五的混合物中并充分搅拌混匀完成制备。In order to solve the above problems, 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.

本发明解决其技术问题所采用的技术方案是：一种具有脱酸螯合功能的垃圾焚烧飞灰脱酸螯合药剂，其特征是，所述具有脱酸螯合功能的垃圾焚烧飞灰脱酸螯合药剂由小苏打、消石灰、氯化镁、氧化镁、磷酸二氢钙、硫酸钙、硫化钠等物质组成，以重量计各成分的含量分别为：小苏打20-30％、消石灰20-30％、氯化镁5-10％、氧化镁15-25％、磷酸二氢钙1-3％、硫酸钙5-10％、硫化钠3-5％。 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%.

一种制备具有脱酸螯合功能的垃圾焚烧飞灰脱酸螯合药剂的方法，其特征包含以下步骤：第一步、首先分别称取小苏打、消石灰、氯化镁、氧化镁、磷酸二氢钙、硫酸钙、硫化钠等物质，各组分按重量百分比计分别为：小苏打20-30％、消石灰20-30％、氯化镁5-10％、氧化镁15-25％、磷酸二氢钙1-3％、硫酸钙5-10％、硫化钠3-5％；第二步、将硫酸钙研磨至细度为200目，备用；将小苏打研磨至600目，备用；第三步、将200目细度的消石灰、氧化镁作为底料并将两者充分混匀；第四步、将步骤二研磨后的硫酸钙加入到步骤三的混合物中并充分混匀；第五步、将氯化镁、磷酸二氢钙、硫化钠加入到步骤四的混合物中，第六步、将小苏打加入到步骤五的混合物中并充分搅拌混匀完成制备。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. , calcium sulfate, sodium sulfide and other substances, 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.

本发明的有益效果：本发明提出一种具有脱酸螯合功能的垃圾焚烧飞灰脱酸螯合药剂同时兼具脱酸螯合功能，能够将目前垃圾焚烧发电厂需要分两个工序进行的烟气脱酸和飞灰螯合处理整合在一个工序里面进行，能够有效降低垃圾焚烧发电厂的运营成本。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.

具体实施方式detailed description

实施例一Embodiment 1

一种具有脱酸螯合功能的垃圾焚烧飞灰脱酸螯合药剂，各成分及其含量百分比如下：A waste incineration fly ash deacidification chelate agent with deacidification and chelation function, the components and percentages thereof are as follows:

原料raw material 重量(KG)Weight (KG) 重量百分比(％)Weight percentage (%) 小苏打baking soda 2020 2020 消石灰Slaked lime 3030 3030 氯化镁Magnesium chloride 1010 1010 氧化镁Magnesium oxide 2525 2525 磷酸二氢钙Calcium dihydrogen phosphate 22 22 硫酸钙Calcium sulfate 1010 1010 硫化钠Sodium sulfide 33 33 合计total 100100 100100

上述垃圾焚烧飞灰稳定化药剂的制备方法如下：The preparation method of the above-mentioned waste incineration fly ash stabilization agent is as follows:

一种制备具有脱酸螯合功能的垃圾焚烧飞灰脱酸螯合药剂的方法，其特征包含以下步骤：第一步、按表中重量百分比计分别称取上述各项物质，第二步、将硫酸钙研磨至细度为200目，备用；将小苏打研磨至600目，备用；第三步、将200目细度的消石灰、氧化镁作为底料并将两者充分混匀；第四步、将步骤二研磨后的硫酸钙加入到步骤三的混合物中并充分混匀；第五步、将氯化镁、磷酸二氢钙、硫化钠加入到步骤四的混合物中，第六步、将小苏打加入到步骤五的混合物中并充分搅拌混匀即制成100KG的垃圾焚烧飞灰脱酸螯合药剂。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.

实施例二 Embodiment 2

一种具有脱酸螯合功能的垃圾焚烧飞灰脱酸螯合药剂，各成分及其含量百分比如下：A waste incineration fly ash deacidification chelate agent with deacidification and chelation function, the components and percentages thereof are as follows:

原料raw material 重量(KG)Weight (KG) 重量百分比(％)Weight percentage (%) 小苏打baking soda 3030 3030 消石灰Slaked lime 2525 2525 氯化镁Magnesium chloride 1010 1010 氧化镁Magnesium oxide 23twenty three 23twenty three 磷酸二氢钙Calcium dihydrogen phosphate 22 22 硫酸钙Calcium sulfate 55 55 硫化钠Sodium sulfide 55 55 合计total 100100 100100

制备方法如实施例一。 The preparation method is as in Example 1.

Claims (2)

一种具有脱酸螯合功能的垃圾焚烧飞灰脱酸螯合药剂，其特征是，所述具有脱酸螯合功能的垃圾焚烧飞灰脱酸螯合药剂由小苏打、消石灰、氯化镁、氧化镁、磷酸二氢钙、硫酸钙、硫化钠等物质组成，以重量计各成分的含量分别为：小苏打20-30％、消石灰20-30％、氯化镁5-10％、氧化镁15-25％、磷酸二氢钙1-3％、硫酸钙5-10％、硫化钠3-5％。A waste incineration fly ash deacidification chelate agent having deacidification and chelation function, characterized in that the detoxification fly ash deacidification chelate agent having deacidification and chelation function is made from baking soda, slaked lime, magnesium chloride, oxidation Magnesium, calcium dihydrogen phosphate, calcium sulfate, sodium sulfide and other substances, the content of each component by weight is: 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%. 一种制备具有脱酸螯合功能的垃圾焚烧飞灰脱酸螯合药剂的方法，其特征包含以下步骤：A method for preparing a waste incineration fly ash deacidification chelate agent having a deacidification chelation function, comprising the following steps: 第一步、首先分别称取小苏打、消石灰、氯化镁、氧化镁、磷酸二氢钙、硫酸钙、硫化钠等物质，各组分按重量百分比计分别为：小苏打20-30％、消石灰20-30％、氯化镁5-10％、氧化镁15-25％、磷酸二氢钙1-3％、硫酸钙5-10％、硫化钠3-5％；The first step is to first weigh the baking soda, slaked lime, magnesium chloride, magnesium oxide, calcium dihydrogen phosphate, calcium sulfate, sodium sulfide and other substances. The components are as follows: 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%; 第二步、将硫酸钙研磨至细度为200目，备用；将小苏打研磨至600目，备用；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 used; 第三步、将200目细度的消石灰、氧化镁作为底料并将两者充分混匀；In the third step, the slaked lime and magnesium oxide of 200 mesh fineness are used as a primer and the two are thoroughly mixed; 第四步、将步骤二研磨后的硫酸钙加入到步骤三的混合物中并充分混匀；In the fourth step, the calcium sulfate after the second step is added to the mixture of the third step and thoroughly mixed; 第五步、将氯化镁、磷酸二氢钙、硫化钠加入到步骤四的混合物中，In the fifth step, magnesium chloride, calcium dihydrogen phosphate, and sodium sulfide are added to the mixture of step four, 第六步、将小苏打加入到步骤五的混合物中并充分搅拌混匀完成制备。 In the sixth step, baking soda is added to the mixture of the fifth step and thoroughly stirred and mixed to complete the preparation.
PCT/CN2017/071985 2017-01-20 2017-01-20 Waste incineration fly ash deacidifying and chelating agent and preparation method therefor Ceased WO2018133046A1 (en)

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