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A nitrogen oxide treatment system and treatment method

A nitrogen oxide and treatment system technology, applied in chemical instruments and methods, separation methods, gas treatment, etc., can solve the problems of induced deactivation, poor treatment effect, etc., to slow down the gas flow rate, avoid catalyst poisoning, and improve catalytic efficiency and speed effect

Active Publication Date: 2022-07-19
CHENGDU TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the selective catalytic reduction of NOx with ammonia is considered to be the most effective measure to reduce NOx emissions, but ordinary catalysts are easily destroyed by SO 2 Induced inactivation, resulting in poor treatment

Method used

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  • A nitrogen oxide treatment system and treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0037] A preferred embodiment of the present invention provides a nitrogen oxide treatment system, which includes a gas mixing adjustment zone, a plasma excitation zone, an SO 2 Absorption zone and NO X Reduction zone, plasma excitation zone, SO 2 Absorption zone and NO X The outer casing of the reduction zone is provided with an insulating shell 8, and the gas mixing adjustment zone is provided with an air inlet 1, and the NO X The reduction zone is provided with an exhaust port 14;

[0038] A gas flow rate adjusting pipe 2 for adjusting the intake flow rate of the air inlet 1 is provided in the gas mixing adjustment area, and an air intake pipe 6 is also communicated with the gas mixing adjustment area;

[0039] An insulating tube 7 is sleeved in the plasma excitation area, a discharge copper plate 9 is oppositely arranged in the insulating tube 7, and a porous drying plate 10 is detachably arranged after the area where the insulating tube is located;

[0040] SO 2 A po...

experiment example 1

[0058] The exhaust gas volume is 600Nm 3 / H, the gas composition is: O 2 =18.31kg / H, NOx=231.7kg / H, CO 2 =56.86kg / h, SO 2 =12.35kg / h, the rest is N 2 . The exhaust gas is passed into the device of the embodiment of the present invention, and the treatment is carried out according to the method of the embodiment, and NOx in the exhaust gas of the exhaust port is 4.5 g / h.

experiment example 2

[0060] The exhaust gas volume is 580Nm 3 / H, the gas composition is: O 2 =12.55kg / H, NOx=187.6kg / H, CO 2 =44.98kg / h, SO 2 =17.34kg / h, the rest is N 2 . The exhaust gas is passed into the device of the embodiment of the present invention, and is treated according to the method of the embodiment, and NOx in the exhaust gas at the exhaust port is 3.8 g / h.

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Abstract

The invention discloses a nitrogen oxide treatment system and a treatment method, comprising a gas mixing adjustment zone, a plasma excitation zone, an SO 2 Absorption zone and NO X Reduction zone, plasma excitation zone, SO 2 Absorption zone and NO X The jacket of the reduction zone is provided with an insulating shell, the gas mixing adjustment zone is provided with an air inlet, NO X The reduction area is provided with an exhaust port; the gas mixing adjustment area is provided with a gas flow rate adjustment pipe for adjusting the intake flow rate of the air inlet, and the gas mixing adjustment area is also connected with an air intake pipe; an insulating pipe is sleeved in the plasma excitation area, and the insulating pipe There is a discharge copper plate opposite to the middle, and a porous drying plate is detachably arranged after the area where the insulating tube is located; SO 2 A porous absorption plate is arranged in the absorption area; NO X The reduction zone is sequentially provided with a porous first catalytic reaction plate, a porous second catalytic reaction plate and a porous drying plate. The treatment device and treatment method of the present invention can treat nitrogen oxides efficiently, and are not easy to SO 2 Poisoning and inactivation.

Description

technical field [0001] The invention belongs to the technical field of nitrogen oxide processing equipment, and in particular relates to a nitrogen oxide processing system and a processing method. Background technique [0002] Nitrogen oxides refer to compounds composed of only nitrogen and oxygen, including a variety of compounds, such as nitrous oxide (N 2 O), Nitric Oxide (NO), Nitrogen Dioxide (NO) 2 ), nitrous oxide (N 2 O 3 ), nitrous oxide (N 2 O 4 ) and nitrous oxide (N 2 O 5 )Wait. Except for nitrous oxide and nitrogen dioxide, other nitrogen oxides are unstable, and when exposed to light, humidity or heat, they become nitrogen dioxide and nitric oxide, and nitric oxide becomes nitrogen dioxide. Nitrogen oxides are all toxic to varying degrees. Nitrogen oxides combine with water in the air and are eventually converted into nitric acid and nitrates, which are removed from the air with precipitation and dustfall. Nitric acid is one of the causes of acid rain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/32B01D53/18B01D53/14B01D53/56B01D53/86B01D53/26B01D53/75
CPCB01D53/32B01D53/18B01D53/1481B01D53/56B01D53/8628B01D53/26B01D53/75B01D2259/818B01D2251/2062B01D2258/02
Inventor 景江范天斌何若雪彭靖张欣王卓何思雨黄树白世星纪福林
Owner CHENGDU TECH UNIV
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