Self-circulation return material gradient humidification flue gas desulfurization and denitrification system and method

A technology for desulfurization, denitrification, and wet flue gas, applied in separation methods, chemical instruments and methods, gas treatment, etc., to achieve the effects of solving the high rate of material return accidents, eliminating sticky wall scaling, and reducing costs

Pending Publication Date: 2020-12-29
南京依涛环保科技有限公司
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Problems solved by technology

[0004] The purpose of the present invention is to solve the shortcomings in the prior art, and propose a self-ci

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  • Self-circulation return material gradient humidification flue gas desulfurization and denitrification system and method
  • Self-circulation return material gradient humidification flue gas desulfurization and denitrification system and method
  • Self-circulation return material gradient humidification flue gas desulfurization and denitrification system and method

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[0030]In order to have a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed descriptions are provided in conjunction with the embodiments.

[0031]Please refer tofigure 1 , The present invention provides a self-circulating return material gradient humidification flue gas desulfurization and denitration system. The system includes an inlet flue 1, a reaction tower body 24, and an intake flue box 2 connected to the inlet flue 1. The system also includes a booster fan 5, an air curtain smoke box intake pipe 6, an air curtain smoke box 7 and an air curtain synergistic ring 10; the inlet flue 1, the booster fan 5, the air curtain smoke box intake pipe 6 and the wind The smoke screen box 7 is connected by a pipe; the air curtain synergistic ring 10 is arranged on both sides of the middle of the reaction tower body 24.

[0032]Preferably, the air curtain smoke box 7 includes an air curtain Venturi inlet section 701, an air cu...

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Abstract

The invention provides a self-circulation return material gradient humidification flue gas desulfurization and denitrification system and method. According to the system, multi-stage humidifying activation is adopted, the final ultralow emission effect of flue gas can be achieved, and wastewater-free emission can also be achieved. A self-circulation return material gradient humidifying flue gas desulfurization and denitrification tower is used for desulfurizing and denitrifying flue gas, sulfur dioxide is removed by chemical absorption reaction of an alkaline desulfurizing agent, and nitric oxide is oxidized into high-valence nitric oxide by an oxidizing agent to be absorbed and removed.

Description

technical field [0001] The invention relates to the field of flue gas environmental protection treatment, in particular to a system and method for desulfurization and denitrification of flue gas with gradient humidification of self-circulation and return materials. Background technique [0002] Wet desulfurization currently accounts for a relatively high proportion of flue gas desulfurization treatment facilities in my country. It has the characteristics of stable operation, high desulfurization efficiency, and low calcium-sulfur ratio. However, wet desulfurization has many operating equipment, complex systems, and heavy operation and maintenance workload. It consumes a lot of water, and the wastewater with high concentration of heavy metals and chloride ions is currently difficult to treat, and the investment and operation costs are high. It is easy to scale and corrode the chimney, and the service life of the chimney is greatly shortened. These problems cannot be overcome by...

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Application Information

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IPC IPC(8): B01D53/50B01D53/56B01D53/78B01D45/14B01D53/83
CPCB01D45/14B01D53/508B01D53/56B01D53/78B01D2251/404B01D2251/604B01D2258/0283
Inventor 周英贵赵三梅李斌李海华
Owner 南京依涛环保科技有限公司
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