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A platform for research: civil engineering, architecture and urbanism
Method for reducing nitrogen oxide content in lime kiln tail gas
The invention provides a method for reducing the content of nitrogen oxides in lime kiln tail gas, which comprises the following steps: S1, conveying tail gas in a lime kiln to a second bag type dust collector through a tail gas fan, and filtering, S2, pressurizing the tail gas through a first fan, and feeding the pressurized tail gas into an upper-layer combustion-supporting air ring pipe and a lower-layer combustion-supporting air ring pipe of the lime kiln in two ways, and the branch pipes enter the upper-layer combustion-supporting air ring pipe and the lower-layer combustion-supporting air ring pipe of the lime kiln. According to the method for reducing the content of the nitric oxide in the tail gas of the lime kiln, the first fan is matched with the upper-layer combustion-supporting air ring pipe, the lower-layer combustion-supporting air ring pipe, the main pipe, the second fan, the first cooler and the second cooler, the discharged tail gas is recycled and cooled at the same time, and therefore air is replaced to serve as combustion-supporting air and driving air; and the combustion temperature can be controlled to be low by utilizing the characteristic of low oxygen content, so that nitrogen oxides generated in the combustion process are reduced.
本发明提供一种降低石灰窑尾气中氮氧化物含量的方法，包括：S1、石灰窑内部的尾气通过尾气风机输送给第二袋式除尘器后进行过滤，S2、在通过第一风机加压后分两路进入石灰窑的上层助燃空气环管和下层助燃空气环管的内部，在进入石灰窑上层助燃空气环管和下层助燃空气环管的支管。本发明提供一种降低石灰窑尾气中氮氧化物含量的方法，通过第一风机配合上层助燃空气环管、下层助燃空气环管、总管、第二风机、第一冷却器和第二冷却器，将排放尾气回收利用的同时进行降温，从而替代空气作为助燃风和驱动风，减少空气使用量，并利用其氧气含量低的特点，可以控制燃烧温度较低，从而降低燃烧过程产生的氮氧化物。
Method for reducing nitrogen oxide content in lime kiln tail gas
The invention provides a method for reducing the content of nitrogen oxides in lime kiln tail gas, which comprises the following steps: S1, conveying tail gas in a lime kiln to a second bag type dust collector through a tail gas fan, and filtering, S2, pressurizing the tail gas through a first fan, and feeding the pressurized tail gas into an upper-layer combustion-supporting air ring pipe and a lower-layer combustion-supporting air ring pipe of the lime kiln in two ways, and the branch pipes enter the upper-layer combustion-supporting air ring pipe and the lower-layer combustion-supporting air ring pipe of the lime kiln. According to the method for reducing the content of the nitric oxide in the tail gas of the lime kiln, the first fan is matched with the upper-layer combustion-supporting air ring pipe, the lower-layer combustion-supporting air ring pipe, the main pipe, the second fan, the first cooler and the second cooler, the discharged tail gas is recycled and cooled at the same time, and therefore air is replaced to serve as combustion-supporting air and driving air; and the combustion temperature can be controlled to be low by utilizing the characteristic of low oxygen content, so that nitrogen oxides generated in the combustion process are reduced.
本发明提供一种降低石灰窑尾气中氮氧化物含量的方法，包括：S1、石灰窑内部的尾气通过尾气风机输送给第二袋式除尘器后进行过滤，S2、在通过第一风机加压后分两路进入石灰窑的上层助燃空气环管和下层助燃空气环管的内部，在进入石灰窑上层助燃空气环管和下层助燃空气环管的支管。本发明提供一种降低石灰窑尾气中氮氧化物含量的方法，通过第一风机配合上层助燃空气环管、下层助燃空气环管、总管、第二风机、第一冷却器和第二冷却器，将排放尾气回收利用的同时进行降温，从而替代空气作为助燃风和驱动风，减少空气使用量，并利用其氧气含量低的特点，可以控制燃烧温度较低，从而降低燃烧过程产生的氮氧化物。
Method for reducing nitrogen oxide content in lime kiln tail gas
一种降低石灰窑尾气中氮氧化物含量的方法
DENG JIANMIN (author) / SHI HENING (author) / XIE CHUANMING (author) / LI JUN (author) / LI SHIHUI (author) / LI JIA (author) / GUO JI (author) / ZHANG YONGPU (author)
2023-11-14
Patent
Electronic Resource
Chinese
IPC:
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
/
B01D
SEPARATION
,
Trennen
/
C04B
Kalk
,
LIME
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