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Annealing furnace flue gas denitration device and technology

A technology of annealing kiln and flue gas, which is applied to the separation of dispersed particles, chemical instruments and methods, and separation methods. It can solve the problems of ineffective control of annealing kiln flue gas, large investment in facilities, and high operating requirements, so as to ensure long-term normal operation Stable operation, low investment, fast denitrification effect

Inactive Publication Date: 2015-07-22
张少篪
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Problems solved by technology

If high-efficiency flue gas treatment equipment such as SCR is used, the facility investment is relatively large and the operation requirements are high, which is unbearable for ordinary small industrial kiln units. This is also the reason why the flue gas of annealing kilns has not been effectively treated for a long time

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  • Annealing furnace flue gas denitration device and technology

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not used to limit the scope of the present invention.

[0031] as attached figure 1 As shown, an annealing kiln flue gas denitrification device of the present invention includes an ammonia water system, a demineralized water system, a compressed air system, and an ammonia water spray system. Ammonia water pump 10 connected in parallel; the desalinated water system includes an electric valve 1, a desalinated water tank 2, and 2 parallel connected water pumps 3; The ammonia gas volatilized in the tank 9 enters the desalted water tank 2 and is absorbed by water to reduce ammonia escape. Mixer 7, distribution box 14, spray gun 18; There are multiple pipelines in the distribution box 14, each pipeline corresponds to a spray gun 18, and the ammonia water pump 10 and the water pump 3 are all connected with the mixer 7; the ammonia water pu...

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Abstract

The invention relates to the field of industrial flue gas pollution control, in particular to an annealing furnace flue gas denitration device and a technology which are applicable to the metallurgy industry and a glass enterprise. According to the annealing furnace flue gas denitration device and the technology, design is reasonable; a structure is simple; system investment is low; operation is simple; the denitration efficiency reaches above 80%; the emission concentration of nitrogen oxide is less than 200mg / Nm<3>; the floor area of equipment is small; investment and energy consumption are low; compressed air is adopted for atomization; an atomization effect is good; a denitration reaction is rapid; ammonia escape is low; a spray gun is cooled by the compressed air; the service life of the spray gun is long; long-term normal and stable running of a system can be ensured; the maintenance quantity is very small; and a normal running rate of the system is above 99%.

Description

technical field [0001] The invention relates to the field of industrial flue gas pollution control, in particular to an annealing kiln flue gas denitrification device and process suitable for the metallurgical industry and glass enterprises. Background technique [0002] During the "Twelfth Five-Year Plan" period, the total amount of air pollutants in my country will be controlled from SO 2 Expanded to NOx, clearly set 10% reduction in nitrogen oxide emissions as one of the main goals, from sulfur control to nitrogen control, and then covers organic waste gas and CO 2 With the continuous expansion of the types of pollutants controlled, the environmental quality standards have also been tightened. Since January 1, 2015, the existing environmental protection enterprises have implemented a nitrogen oxide emission standard of 300mg / Nm3. At present, the nitrogen oxides of most annealing kilns exceed 700mg / Nm3. If they are not treated, they will face serious problems of stopping ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/79B01D53/56
Inventor 张少篪
Owner 张少篪
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