Full-load flue gas denitration device

A full-load, denitrification technology, applied in the field of flue gas denitrification, can solve the problems of boilers not running normally, low flue gas temperature, etc., and achieve the effect of saving catalyst, small volume, and improving utilization rate

Pending Publication Date: 2018-07-27
山东联盛环保科技有限公司
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Problems solved by technology

[0002] Power plant boilers are the power equipment of large power plants, and the average emission concentration of nitrogen oxides in the flue gas during operation is much higher than the national standard (about 50mg / Nm 3 (Standard dry)), during the normal operation of the boiler, the conventional SCR device is generally used for denitrification to meet the emission requirements; while the flue gas temperature is much lower than that during normal operation when the boiler is started or shut down and at low load, the original SCR of the boiler cannot normal operation

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  • Full-load flue gas denitration device
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  • Full-load flue gas denitration device

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0025] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0026] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or c...

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Abstract

The invention discloses a full-load flue gas denitration device. The full-load flue gas denitration device comprises an SCR reactor, an ammonia jet system and a denitration control system and is characterized in that the SCR reactor is arranged in a flue gas bypass at the rear of a boiler tail dust remover, a multilayer low-temperature catalyst is arranged in the SCR reactor, the ammonia jet system is arranged at the inlet flue of the SCR reactor and connected with a reducing agent preparation system, and the denitration control system is connected with each equipment of the flue gas denitration device and used for performing parameter monitoring and operation control on each equipment. The full-load flue gas denitration device has the advantages that original boiler dust remover outlet flue gas is guided into the ultralow-temperature SCR device, the treated flue gas returns to a boiler smoke discharge system, a reducing agent is sprayed into the ultralow-temperature SCR device to satisfy the requirements of project emission and safety production, and the control system is used for effectively monitoring and controlling the operation parameters of the denitration device and the operation conditions of the equipment.

Description

technical field [0001] The invention relates to the field of flue gas denitrification, in particular to a full-load flue gas denitrification device. Background technique [0002] Power plant boilers are power equipment for large power plants. During operation, the average emission concentration of nitrogen oxides in flue gas is much higher than the national standard (about 50mg / Nm 3 (Standard dry)), during the normal operation of the boiler, the conventional SCR device is generally used for denitrification to meet the emission requirements; however, the flue gas temperature is much lower than that during normal operation when the boiler is started or shut down and at low load, and the original SCR of the boiler cannot normal operation. In response to the "Twelfth Five-Year Plan" requirements for the control of sulfur dioxide and nitrogen oxides in the thermal power industry and to meet the requirements of the "Emission Standards of Air Pollutants for Thermal Power Plants" (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/90B01D53/56G05B19/05
CPCB01D53/8631B01D53/90G05B19/054G05B19/058B01D2251/2062B01D2258/0283B01D2255/902
Inventor 王四顺陈建军王志强
Owner 山东联盛环保科技有限公司
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