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A flue gas desulfurization and mercury removal agent and its preparation method

A technology for mercury removal and flue gas removal, applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve the problems of acid rain returning to surface rivers, lakes, corrosion of industrial equipment, damage to animals and plants, etc., to improve oxidation and adsorption. effect, improve the desulfurization and mercury removal efficiency, and improve the desulfurization and mercury removal performance

Active Publication Date: 2020-04-24
GUIZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The removal of sulfur dioxide and nitrogen oxides will cause acid rain to return to surface rivers and lakes, which will greatly affect the water quality of animals and plants, cause large areas of industrial equipment to corrode, animals and plants will be damaged, and crop production will be reduced , animal diseases occur frequently; for the emission of mercury components, it is easy to enter the organism and form methylmercury in the organism. Methylmercury will inhibit the metabolism of the organism and seriously threaten the health of the organism, and it is also a heavy metal pollution field
[0003] In view of this, in the prior art, desulfurization and demercury treatment of coal-fired flue gas is strongly advocated to reduce the pollution caused by coal-fired flue gas emissions to the environment, resulting in the emergence of a large number of desulfurization and mercury removal technologies, but Most of the desulfurization and mercury removal technologies are for desulfurization and mercury removal alone, such as using lime water to absorb sulfur dioxide for desulfurization, using adsorbents for adsorption and removal of mercury, etc.
Nevertheless, the desulfurization and mercury removal efficiency in most existing technologies is still unsatisfactory, always maintained at about 70%, resulting in the emission of a large amount of sulfur dioxide and mercury components in the flue gas emission process

Method used

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  • A flue gas desulfurization and mercury removal agent and its preparation method
  • A flue gas desulfurization and mercury removal agent and its preparation method

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preparation example Construction

[0036] In some embodiments, the preparation method of flue gas desulfurization and mercury removal agent comprises the following steps:

[0037] (1) heating the pyrolusite at a temperature of 300-600° C., and spraying water on its surface, so that pulverization occurs, and pyrolusite powder is obtained;

[0038] (2) Combine pyrolusite powder with Li 2 MnTiO 4 1. Manganese titanate is mixed evenly, and water is added to prepare a slurry with a liquid-solid ratio of 3-5:1;

[0039] (3) Soak the carrier in the slurry for 2-3 hours, place it at a temperature of 70-130°C for 20-30 minutes, and dry it.

Embodiment 1

[0041] Grind pyrolusite into powder and combine it with Li 2 MnTiO 4 , manganese titanate mixed evenly to obtain the active ingredient, the mixed mass percentage is 80% of pyrolusite powder, Li 2 MnTiO 4 5%, manganese titanate 15%, take active ingredient 10g, add water to prepare slurry, and γ-Al with a diameter of 0.02mm 2 o 3 80g was added and soaked for 2h, treated at 70°C for 30min, and dried.

Embodiment 2

[0043] Heat pyrolusite to 600°C, add water to pulverize pyrolusite to obtain pyrolusite powder; mix pyrolusite powder with Li 2 MnTiO 4 , manganese titanate mixed evenly to obtain the active ingredient, the mixed mass percentage is 60% of pyrolusite powder, Li 2 MnTiO 4 20%, manganese titanate 20%, take 5g of the active ingredient, add water to prepare a slurry, and add 95g of silicon dioxide particles with a diameter of 0.06mm to soak for 3h, place the temperature at 130°C for 20min, and dry to obtain.

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Abstract

The invention relates to the field of rice wine making technology, in particular to a novel flue gas desulfurization and demercuration agent and a preparation method thereof. Pyrolusite, Li2MnTiO4 and manganese titanate are adopted as active components to be loaded on a carrier, and the proportion of the active components in the desulfurization and demercuration agent is controlled, so that the pore volume of the desulfurization and demercuration agent is high, the sulfur volume and the mercury volume reach 16.3wt% or above, and desulfurization and demercuration efficiency of the desulfurization and demercuration agent reaches 98% or above.

Description

technical field [0001] The invention relates to a novel flue gas desulfurization and mercury removal agent and a preparation method thereof. Background technique [0002] Coal is the most abundant fossil fuel, as well as the most basic and crude energy source. During its combustion process, it produces a large number of pollutants that seriously pollute the atmosphere, such as dust, sulfur dioxide, nitrogen oxides, and mercury components. The removal of sulfur dioxide and nitrogen oxides will cause acid rain to return to surface rivers and lakes, which will greatly affect the water quality of animals and plants, cause large areas of industrial equipment to corrode, animals and plants will be damaged, and crop production will be reduced , animal diseases occur frequently; for the emission of mercury components, it is easy to enter the organism and form methylmercury in the organism. Methylmercury will inhibit the metabolism of the organism and seriously threaten the health of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/81B01D53/50B01D53/64
CPCB01D53/02B01D53/508B01D53/64B01D53/81B01D2251/10B01D2257/602B01D2258/0283
Inventor 陈肖虎赵平原王丽远鲁圣军黎志英刘利金会心陈庆唐道文黄碧芳
Owner GUIZHOU UNIV
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