Coal-fired flue gas heavy metal pollutant removal device

A technology for coal-fired flue gas and heavy metals, applied in gas treatment, membrane technology, and separation of dispersed particles, can solve problems such as dust emission, environmental and human health hazards, reduce mercury removal costs, improve catalytic efficiency, and provide Effect of Mercury Efficiency

Inactive Publication Date: 2019-07-12
DATANG ENVIRONMENT IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Coal combustion flue gas emits a large amount of dust, sulfur oxides, nitrogen oxides and heavy metal pollutants, which is harmful to the environment and human health

Method used

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  • Coal-fired flue gas heavy metal pollutant removal device
  • Coal-fired flue gas heavy metal pollutant removal device
  • Coal-fired flue gas heavy metal pollutant removal device

Examples

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Embodiment Construction

[0021] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0022] Such as Figure 1-2 As shown, the embodiment of the present invention is a device for removing heavy metal pollutants from coal-fired flue gas, which includes:

[0023] There are multiple grilles 4, and the multiple grilles 4 are arranged inside the chimney 1 at equal intervals along the height direction of the chimney 1;

[0024] Transparent glass 5, which is matched with the grille 4, and the transparent glass 5 is provided on the chimney wall above the corresponding grille 4;

[0025] The first pipe 2, the inlet end of which is connected with the outlet end of the induced draft fan 3, and the outlet end of the first pipe 2 is connected with the bottom of the chimney 1;

[0026] The inlet end of the second pipe 6 is connected with the electrostatic precipitator, and the outlet end of the second pipe 6 is connected with the inlet en...

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Abstract

The invention discloses a coal-fired flue gas heavy metal pollutant removal device. The device comprises multiple grilles, transparent glass, a first pipeline and a second pipeline. The multiple grilles are evenly spaced along the height direction of a chimney inside the chimney. The transparent glass is arranged to match the grilles. The transparent glass is arranged on the chimney wall above thecorresponding grilles. An inlet end of the first pipeline is connected with an outlet end of an induced draught fan, and an outlet end of the first pipeline is connected with the bottom of the chimney. An inlet end of the second pipeline is connected with an electrostatic precipitator, and an outlet end of the second pipeline is connected with an inlet end of the induced draught fan. The invention has the following beneficial effects: through full contact between visible light and the surface of a photocatalyst, catalytic efficiency is effectively enhanced; by using visible light for mercuryremoval, the mercury removal cost is reduced; and according to actual situations, an ultraviolet source is additionally arranged to further enhance the mercury removal efficiency.

Description

Technical field [0001] The invention relates to the technical field of environmental protection, in particular to a device for removing heavy metal pollutants from coal-fired flue gas. Background technique [0002] my country's energy is dominated by thermal power, and it is expected that the situation where coal is the main energy source will not fundamentally change for a long time in the future. Coal-fired flue gas emits a large amount of dust, sulfur oxides, nitrogen oxides and heavy metal pollutants, which are harmful to the environment and human health. Mercury emissions from coal-fired flue gas from thermal power plants account for more than one third of man-made mercury emissions. Mercury will spread with the atmosphere and easily cause regional and even global pollution. At the same time, mercury has a highly toxic, persistent and bioaccumulative effect, which has attracted wide attention from various countries. Therefore, in order to meet the requirements of coal-fire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/64
CPCB01D53/007B01D53/8665B01D2255/802B01D2258/0283B01D2259/804
Inventor 姚学忠包文运杨宁向朝虎李颖王为良郭行义苗祎鹓朱元山赵晓丹李晓彤宋玉凯
Owner DATANG ENVIRONMENT IND GRP
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