Atmospheric pressure coal-fired boiler with desulfurization, denitrification and dust removal in furnace and its treatment method

A technology for desulfurization, denitrification, and boilers, which is applied to atmospheric pressure coal-fired boilers for desulfurization, denitrification and dust removal in the furnace and its treatment field

Active Publication Date: 2021-05-14
YANKUANG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problems existing in the flue gas desulfurization and denitrification of the existing atmospheric pressure hydrothermal boiler, the p...

Method used

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  • Atmospheric pressure coal-fired boiler with desulfurization, denitrification and dust removal in furnace and its treatment method
  • Atmospheric pressure coal-fired boiler with desulfurization, denitrification and dust removal in furnace and its treatment method

Examples

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Embodiment 1

[0055] This embodiment provides a kind of normal pressure water heating boiler, such as figure 1 As shown, the atmospheric pressure water heating boiler is longitudinally provided with a first longitudinal partition 1 at the top of the furnace body, and the furnace body is divided into a first chamber and a second chamber connected at the bottom, and the first chamber and the second chamber A chain grate 2 is provided at the lower part of the first chamber, a coal filling port 3 is provided on the furnace wall on one side of the first chamber, and a first transverse partition 4 connected to the furnace wall is arranged above the chain grate 2 in the second chamber. There is a gap between the transverse partition 4 and the first longitudinal partition 1, and a second longitudinal partition 5 is longitudinally arranged on the top furnace wall in the second chamber, and the second longitudinal partition 5 is connected to the first transverse partition. There is a gap between the ...

Embodiment 2

[0061] This embodiment provides a kind of normal pressure water heating boiler, such as figure 2 As shown, the atmospheric pressure water heating boiler is longitudinally provided with a first longitudinal partition 1 at the top of the furnace body, and the furnace body is divided into a first chamber and a second chamber connected at the bottom, and the first chamber and the second chamber A chain grate 2 is provided at the lower part of the first chamber, a coal filling port 3 is provided on the furnace wall on one side of the first chamber, and a first transverse partition 4 connected to the furnace wall is arranged above the chain grate 2 in the second chamber. There is a gap between the transverse partition 4 and the first longitudinal partition 1, and a second longitudinal partition 5 is longitudinally arranged on the top furnace wall in the second chamber, and the second longitudinal partition 5 is connected to the first transverse partition. There is a gap between the...

Embodiment 3

[0067] This embodiment provides an atmospheric pressure water heating boiler. The structure of the atmospheric pressure water heating boiler refers to the structure in Example 1, the only difference is that one second longitudinal partition 5 and two third longitudinal partitions are arranged in the furnace body. The partition 6 forms a flue gas circulation area including four return paths in the second chamber.

[0068] The atmospheric pressure hydrothermal boiler is used for flue gas treatment, and the treatment method refers to the method in Example 1.

[0069] In this embodiment, NO in the flue gas discharged from the furnace x Concentration less than 100mg / Nm 3 , the sulfur concentration is less than 50mg / Nm 3 , its desulfurization efficiency reaches 90%, denitrification efficiency reaches 50%, and dust removal efficiency reaches 60%.

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Abstract

The invention provides an atmospheric pressure coal-fired boiler for desulfurization, denitrification and dust removal in the furnace and its treatment method. A first longitudinal partition is arranged longitudinally on the top of the furnace body, and the furnace body is divided into a first chamber and a second chamber connected at the bottom. The lower part of the furnace body is equipped with a chain grate, and a partition plate is set in the second chamber to form a flue gas circulation area including at least three return passes in the second chamber, and heat exchange tubes and desulfurization and denitrification components are arranged in the flue gas circulation area. In the present invention, a desulfurization and denitrification component is arranged in the furnace, so that the flue gas is desulfurized and denitrified while dedusting in the furnace, reducing the concentration and content of pollutants in the exhaust smoke, so that the exhaust gas index meets the increasingly severe environmental protection requirements.

Description

technical field [0001] The invention belongs to the field of coal combustion equipment, and relates to an atmospheric pressure coal-fired boiler and a processing method thereof, in particular to an atmospheric pressure coal-fired boiler for desulfurization, denitrification and dust removal in the furnace and a processing method thereof. Background technique [0002] At present, the combustion of atmospheric hot water boilers on the market, including normal-fired furnaces, reverse-fired furnaces and gasification furnaces, etc., among the exhaust gases, such as NO x , SO 2 The content of dust and dust is relatively high, which cannot meet the requirements of emission standards and cannot meet the increasingly severe environmental protection situation. [0003] CN 107042033A discloses a high-efficiency boiler dust removal, desulfurization and denitrification device, which includes a dust removal device, a desulfurization and denitrification device, and an induced draft fan. T...

Claims

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Application Information

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IPC IPC(8): F24H1/22F24H9/18F23J15/02F23J15/06B01D53/75B01D53/50B01D53/56
CPCB01D53/50B01D53/56B01D53/75F23J15/02F23J15/06F24H1/22F24H9/1845Y02E20/30
Inventor 王振平刘忠攀王海苗司硕张海燕王传志
Owner YANKUANG GRP CO LTD
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