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Boiler flue gas integrated distributed desulfurization and denitration device

A boiler flue gas, desulfurization and denitrification technology, applied in separation methods, dispersed particle separation, chemical instruments and methods, etc., can solve the problems of low denitrification ability, achieve the effects of improving desulfurization and denitrification efficiency, saving oxidants, and reducing operating costs

Inactive Publication Date: 2015-11-11
JIANGSU YITONG ENVIRONMENTAL PROTECTION ENG TECH
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Problems solved by technology

But its denitrification ability is not high

Method used

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  • Boiler flue gas integrated distributed desulfurization and denitration device

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Embodiment Construction

[0012] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0013] Such as figure 1 As shown, a boiler flue gas integrated distributed desulfurization and denitrification device in this embodiment adopts the route of dust removal-desulfurization-oxidation-denitration, including bag filter 1, desulfurization tower 2, oxidation tower 3 and denitrification tower 4, The bag filter 1 is used for dust removal. The flue gas produced by the boiler passes through the bag filter 1 under the action of the induced draft fan 5. The original flue gas after dust removal enters the tower from the lower side of the desulfurization tower 2 for desulfurization. The desulfurization tower 2 uses packing The way of the tower, the absorbent is sodium hydroxide dilute solution; then it enters the oxidation tower 3 for primary oxidation absorption, and a part of NO is oxidized to NO 2 , the oxidation tower 3 adopts the method...

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Abstract

The invention relates to a boiler flue gas integrated distributed desulfurization and denitration device. The boiler flue gas integrated distributed desulfurization and denitration device is characterized by comprising a dust collector (1), a desulfurization tower (2), an oxidation tower (3), a denitration tower (4) and a slurry pond (5), wherein flue gas produced by a boiler passes through the dust collector (1) under the action of an induced draft fan (5), the dedusted raw flue gas enters the desulfurization tower (2) from the side surface on the lower part of the desulfurization tower (2) for desulfurization, the flue gas after passing through a demister (7) enters the upper part of the oxidation tower (3), a flue (12) connected with the lower part of the denitration tower (4) is formed in the side surface on the lower part of the oxidation tower (3), an upper spraying layer, a middle spraying layer and a lower spraying layer are arranged in the denitration tower (4), the upper spraying layer and the lower spraying layer are connected with the slurry pond (5) containing an absorbent solution through a circulating pump (6), the middle spraying layer is connected with an H2O2 solution tank (14) through a metering pump (10), and the denitrated flue gas is discharged from a chimney after passing through a wire mesh demister (13) above the spraying layers. The running cost of the device is reduced simultaneously when the desulfurization and denitration efficiency of the device is improved.

Description

technical field [0001] The invention relates to the field of environmental protection, and relates to a device for flue gas discharged from a coal-fired boiler, in particular to an integrated distributed desulfurization and denitrification device for boiler flue gas. Background technique [0002] With the development of our country's economy, our country's demand and consumption of energy have increased significantly. A large amount of fossil fuels release SO2, NOx, dust and other pollutants during the combustion process, which has brought serious environmental problems, and has also promoted fuel, especially It is the research and development of clean coal combustion technology, among which the emission control technology of sulfur dioxide and nitrogen oxides from coal combustion is a hot topic in international research in recent years. At present, most of the processes and equipment used for flue gas desulfurization, denitrification and flue gas dust removal of coal-fired ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/75B01D53/60B01D53/96F23J15/04
Inventor 赵海浩管振泳
Owner JIANGSU YITONG ENVIRONMENTAL PROTECTION ENG TECH
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