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Detachable flue gas denitrification device

A denitration and flue gas technology, applied in the separation of dispersed particles, chemical instruments and methods, separation methods, etc., can solve the problems of poor catalytic effect of catalysts, difficult to clean, affecting the service life of equipment and flue gas, etc., and achieves convenient cleaning of the inner wall of the device. , the effect of prolonging the service life

Inactive Publication Date: 2015-12-09
CHANGZHOU CHANGYU PRACTICAL GAS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem mainly solved by the present invention: Aiming at the drawbacks that the current fuel combustion process will generate corrosive and viscous products after adding catalyst, which is not easy to clean, affects the service life of the equipment and flue gas, and the catalytic effect of the catalyst is poor, a kind of Detachable flue gas denitration device, the denitrification device of the invention can be disassembled, cleaned and maintained, prolonging the service life of the equipment, in which the use of attapulgite metal ion catalyst can improve the denitrification efficiency

Method used

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preparation example Construction

[0022] The preparation method of the attapulgite-based metal ion catalyst is:

[0023] 5. Mix silica, attapulgite, and mullite in a mass ratio of 2:2:1, put them into a jet mill, and pulverize the mixture into powder; add 1% to 5% of azobis in the mixture powder Formamide, rinsed with 5mol / L phosphoric acid; then soak the rinsed mixture in a concentration of 0.2-0.5mol / L chromium nitrate, 0.2-0.5mol / L copper sulfate and 0.2-0.5mol / L mercuric chloride 20-30 minutes in the mixed solution; then the soaked mixture is naturally air-dried, put into a muffle furnace, and calcined at a high temperature of 600-700°C to form a honeycomb shape, thereby obtaining an attapulgite-based metal ion catalyst.

[0024] The application method of the present invention: the device is directly connected to the exhaust port of the exhaust gas to be denitrated, and the monitoring results show that the average concentration of nitrogen oxides at the inlet reaches 700 mg / standard cubic meter, and the ...

example 1

[0026] A detachable flue gas denitrification device, including a raw flue gas inlet (1), a reducing agent ammonia gas inlet (2), a threaded disassembly port (3), a denitrification device reactor (4), and a denitrification flue gas outlet (5) , raw flue gas catalytic reduction channel (6), attapulgite-based metal ion catalyst (7), characterized in that: after the raw flue gas to be denitrated is discharged, it enters the denitrification device through the raw flue gas inlet (1). Ammonia gas is introduced into the gas inlet (2) and mixed with the original flue gas to be denitrified, and then enters the denitrification device reactor (4), and the mixed gas slowly enters the catalytic reduction channel of the raw flue gas, and passes through the catalytic reduction channel of the raw flue gas ( 6) At the same time, through the catalysis of the attapulgite-based metal ion catalyst (7), the original flue gas to be denitrated is reduced to nitrogen and water that have little impact on...

example 2

[0031] A detachable flue gas denitrification device, including a raw flue gas inlet (1), a reducing agent ammonia gas inlet (2), a threaded disassembly port (3), a denitrification device reactor (4), and a denitrification flue gas outlet (5) , raw flue gas catalytic reduction channel (6), attapulgite-based metal ion catalyst (7), characterized in that: after the raw flue gas to be denitrated is discharged, it enters the denitrification device through the raw flue gas inlet (1). Ammonia gas is introduced into the gas inlet (2) and mixed with the original flue gas to be denitrified, and then enters the denitrification device reactor (4), and the mixed gas slowly enters the catalytic reduction channel of the raw flue gas, and passes through the catalytic reduction channel of the raw flue gas ( 6) At the same time, through the catalysis of the attapulgite-based metal ion catalyst (7), the original flue gas to be denitrated is reduced to nitrogen and water that have little impact on...

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Abstract

The invention discloses a detachable flue gas denitrification device and belongs to the technical field of environmental protection. According to the method, after original flue gas to be denitrated is exhausted, the flue gas enters the denitrification device through an original flue gas inlet, ammonia gas is introduced from a reducing agent ammonia gas inlet and mixed with the original flue gas to be denitrated and enters a denitrification device reactor, mixed gas slowly enters an original flue gas catalytic reduction channel, and while passing through the original flue gas catalytic reduction channel, under the catalytic action of an attapulgite base metal ion catalyst, the original flue gas to be denitrated is reduced into nitrogen influencing atmosphere little and water and exhausted through a denitrification flue gas exhaust opening. The denitrification device can be cleaned and maintained detachably, the service life of the device is prolonged, and by the adoption of the attapulgite base metal ion catalyst, the denitrification efficiency can be improved.

Description

technical field [0001] The invention discloses a detachable flue gas denitrification device, which belongs to the technical field of environmental protection. Background technique [0002] Nitrogen oxides are the main air pollutants recognized by countries all over the world, and are the main causes of acid rain, ozone layer destruction, photochemical smog formation, ecological environment impact and global warming. From a global perspective, fuel combustion, especially coal combustion, is the main man-made source of nitrogen oxide environmental pollution. With the rapid development of the national economy and the continuous increase of coal-fired generating units, the emission of nitrogen oxides is bound to increase year by year, and the removal of nitrogen oxides has also been brought to an unprecedented height. [0003] In order to further reduce NOx emissions, flue gas denitrification must be carried out. The current flue gas denitrification technology can be roughly d...

Claims

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Application Information

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IPC IPC(8): B01D53/90B01D53/56
Inventor 雷春生王志慧林大伟
Owner CHANGZHOU CHANGYU PRACTICAL GAS
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