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Low-NOX combustion technology coupling active ammonia synergistic denitration device for coal-fired industrial boiler

A combustion technology and a technology for industrial boilers, which are applied in the field of low-NOX combustion technology coupled with active ammonia synergistic denitration devices for coal-fired industrial boilers, can solve the problems of reserved space for boiler renovation, small footprint, and low operating costs, and achieve improved air quality. Insufficient mixing, reducing emissions and ensuring full combustion

Pending Publication Date: 2020-05-12
中电国核(北京)节能环保科技有限公司
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The device is hardly affected by the type of boiler and the temperature in the furnace, and has low investment, low consumption of carbon-based reducing agent, water and energy, low operating cost, and small footprint. Reserved space, the site is relatively tight

Method used

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  • Low-NOX combustion technology coupling active ammonia synergistic denitration device for coal-fired industrial boiler
  • Low-NOX combustion technology coupling active ammonia synergistic denitration device for coal-fired industrial boiler
  • Low-NOX combustion technology coupling active ammonia synergistic denitration device for coal-fired industrial boiler

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0032] see figure 1 ~ Figure 3, the present invention provides a technical solution: a coal-fired industrial boiler with low NO X Combustion technology coupled with active ammonia synergistic denitrification device, including low NO X Combustion technology components and active ammonia synergistic denitrification components, low NO XCombustion technology components include recirculation fan 13, recirculation air control valve 12, recirculation air intake mai...

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Abstract

The invention discloses a low-NOX combustion technology coupling active ammonia synergistic denitration device for a coal-fired industrial boiler. The low-NOX combustion technology coupling active ammonia synergistic denitration device comprises a low-NOX combustion technology assembly and an active ammonia synergistic denitration assembly. According to the low-NOX combustion technology coupling active ammonia synergistic denitration device, the low-NOX combustion technology is mainly adopted, recycled flue gas is fed into different positions of a hearth in a layered mode, layered control is implemented, the recycled flue gas and ascending airflow are fully mixed, and therefore the standing time of the ascending airflow in the boiler is prolonged, generation of nitric oxide is reduced, andthe initial emission concentration of the nitric oxide is reduced; meanwhile, an online monitor feeds the concentration of the nitric oxide in the flue gas at an outlet of the boiler back to a central controller, the central controller is automatically coupled with active ammonia for synergistic denitration based on the monitoring result, the influence of the type of the boiler and the temperature in the boiler is avoided, the investment is small, the consumption of carbon-based reducing agents, water and energy is small, the operation cost is low, the occupied area is small, the emission value of the nitric oxide is controlled to be 50mg / Nm <3> or below, the denitration efficiency reaches up to 80% or above under the low operation cost, and the increasingly strict emission standard is met.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a coal-fired industrial boiler with low NO X Combustion technology coupled with active ammonia synergistic denitrification device. Background technique [0002] Coal-fired flue gas emission sources can be divided into coal-fired power station boilers and coal-fired industrial boilers. The furnace structure and combustion methods of the two are quite different. The situation is good, the change of load rate during actual operation is small, and the main time is in the high-load operation state, SCR denitrification technology is mostly used, and there are many chain furnaces in coal-fired industrial boilers in my country, the furnace is relatively small, and the combustion method is Layer combustion, the coal particle size is large, the combustion is concentrated in the lower part of the furnace, the combustion conditions are relatively poor, and the working conditi...

Claims

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Application Information

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IPC IPC(8): F23B80/02F23J15/02B01D53/83B01D53/56
CPCF23B80/02F23J15/003F23J15/02B01D53/83F23J2215/10B01D2258/0283B01D2259/128B01D2251/2062B01D2257/402B01D2257/404Y02C20/10
Inventor 包文隆侯世红
Owner 中电国核(北京)节能环保科技有限公司
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