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Efficient flue gas desulfurization additive rich in defect sites and preparation method of efficient flue gas desulfurization additive

An additive and high-efficiency technology, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems of low utilization rate of desulfurizer, slow reaction speed, low desulfurization efficiency, etc., and achieve high utilization rate of desulfurizer and reaction speed. Fast and efficient desulfurization

Active Publication Date: 2021-12-31
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This shows, provide a kind of preparation method simple, lower cost can accelerate SO 2 The desulfurization additive of oxidation rate is of great significance to solve the common problems of slow reaction speed, low desulfurization efficiency and low utilization rate of desulfurization agent in existing dry desulfurization agents

Method used

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  • Efficient flue gas desulfurization additive rich in defect sites and preparation method of efficient flue gas desulfurization additive
  • Efficient flue gas desulfurization additive rich in defect sites and preparation method of efficient flue gas desulfurization additive

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Effect test

Embodiment 1

[0028] Such as figure 1 As shown, the high-efficiency flue gas desulfurization additive rich in defect sites is prepared according to the process, and the steps of the high-efficiency flue gas desulfurization additive rich in defect sites are as follows:

[0029] A: Measure zinc chloride and ferric nitrate according to the molar ratio of Zn and Fe as 3:1, then completely dissolve zinc chloride and ferric nitrate in distilled water to prepare a metal salt solution of mixed zinc salt and iron salt, metal The total ion concentration of Zn and Fe in the salt solution is 1mol / L;

[0030] B. Combine KOH and K 2 CO 3 Dissolved in distilled water in turn to prepare an alkaline solution, in which OH - and CO 3 2- The concentration is 1mol / L;

[0031] C, under stirring at room temperature, all the metal salt solution prepared by 1 volume of step A is dropped into the alkali solution prepared by 4 volumes of step B at a rate of 3 drops / second, and then added dropwise with 1mol / L hy...

Embodiment 2

[0039] Prepare the high-efficiency flue gas desulfurization additive rich in defect sites according to the process, and the steps of the high-efficiency flue gas desulfurization additive rich in defect sites are as follows:

[0040] A: Measure zinc nitrate and ferric sulfate according to the molar ratio of Zn and Fe as 2:1, then completely dissolve zinc nitrate and ferric sulfate in distilled water to prepare a metal salt solution of mixed zinc salt and iron salt, metal salt solution The total ion concentration of Zn and Fe in the medium is 2mol / L;

[0041] B. Combine NaOH and Na 2 CO 3 Dissolved in distilled water in turn to prepare an alkaline solution, in which OH - and CO 3 2- The concentration is 2mol / L;

[0042]C, under stirring at room temperature, all the metal salt solution prepared by 1 volume of step A is dropped into the alkali solution prepared by 3 volumes of step B at a rate of 1 drop / second, and then 2mol / L of hydrochloric acid is added dropwise to adjust ...

Embodiment 3

[0050] Prepare the high-efficiency flue gas desulfurization additive rich in defect sites according to the process, and the steps of the high-efficiency flue gas desulfurization additive rich in defect sites are as follows:

[0051] A: Measure zinc nitrate and ferric sulfate according to the molar ratio of Zn and Fe being 2.5:1, then completely dissolve zinc nitrate and ferric sulfate in distilled water to prepare a metal salt solution of mixed zinc salt and iron salt, metal salt solution The total ion concentration of Zn and Fe in the medium is 1mol / L;

[0052] B. Combine NaOH and Na 2 CO 3 Dissolved in distilled water in turn to prepare an alkaline solution, in which OH - and CO 3 2- The concentration is 1mol / L;

[0053] C, under stirring at room temperature, all the metal salt solution prepared by 1 volume of step A is dripped into the alkali solution prepared by 3 volumes of step B at a rate of 3 drops / second, and then added dropwise the hydrochloric acid of 2mol / L to...

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Abstract

The invention discloses an efficient flue gas desulfurization additive rich in defect sites and a preparation method thereof, and relates to the field of industrial flue gas purification and catalyst preparation. The efficient flue gas desulfurization additive rich in defect sites is an amorphous zinc-iron composite metal oxide, has rich surface metal defect and oxygen defect sites, and is developed in pore structure and large in specific surface area. The invention further discloses a preparation method of the efficient flue gas desulfurization additive rich in defect sites, the method is novel, preparation equipment is simple, and macro preparation is realized. The desulfurization additive disclosed by the invention can quickly remove sulfur dioxide under the condition of 80-400 DEG C, has the advantages of abundant raw materials, low preparation cost, simple process, good purification effect, large sulfur capacity, long service life and the like, and can be widely applied to flue gas purification equipment of heating boilers and power generation boilers taking coal and natural gas as fuels.

Description

technical field [0001] The invention belongs to the fields of industrial flue gas purification and catalyst preparation, and in particular relates to a high-efficiency flue gas desulfurization additive rich in defect sites and a preparation method thereof. Background technique [0002] Sulfur dioxide (SO 2 ) is one of the important precursors for the formation of acid rain and smog, and is one of the air pollutants that need to be paid attention to. Research and practical operation experience show that flue gas desulfurization technology is considered to be the best way to control industrial SO 2 The most efficient way to discharge. According to the desulfurization method and product processing form, the flue gas desulfurization technology can generally be divided into wet method (the desulfurizer and by-products are wet), semi-dry method (the desulfurizer is wet and the by-product is dry) and dry method. There are three types of methods (desulfurizer and by-products are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80B01J35/10B01D53/86B01D53/50
CPCB01J23/80B01J23/002B01D53/8609B01D2255/20738B01D2255/20792B01D2258/0283B01J35/61B01J35/60
Inventor 赵顺征唐晓龙易红宏高凤雨于庆君周远松刘俊
Owner UNIV OF SCI & TECH BEIJING