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Device and method for controlling ammonia water flow in denitration system

A control device and flow control technology, applied in the field of flue gas denitrification, can solve problems such as difficulty in meeting the precise adjustment of small ammonia water flow, and achieve the effect of solving precise adjustment

Inactive Publication Date: 2021-01-05
SHANDONG GUOSHUN CONSTR GRP
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Problems solved by technology

[0006] The invention provides a device and method for controlling the flow of ammonia water in a denitrification system, aiming to solve the problem in the prior art that it is difficult to accurately adjust the flow of small ammonia water

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  • Device and method for controlling ammonia water flow in denitration system
  • Device and method for controlling ammonia water flow in denitration system

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Embodiment Construction

[0038] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relationship between the components in a certain posture (as shown in the accompanying drawings). Relative positi...

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Abstract

The invention discloses a device and method for controlling ammonia water flow in a denitration system, and the device for controlling the ammonia water flow in the denitration system comprises an ammonia water conveying pipeline; a switch electromagnetic valve and an electromagnetic flowmeter sequentially communicated with the ammonia water conveying pipeline along the ammonia water conveying flow direction of the ammonia water conveying pipeline; a flow regulating branch pipeline communicated with the ammonia water conveying pipeline and connected to the two ends of the switch electromagnetic valve in parallel, wherein the flow regulating branch pipeline is communicated with a small-caliber flow regulating valve; and an ammonia water flow control circuit electrically connected with the electromagnetic flowmeter, the switch electromagnetic valve and the small-caliber flow regulating valve respectively. According to the technical scheme, the problem that in the prior art, accurate adjustment of the small ammonia water flow is difficult to meet can be solved.

Description

technical field [0001] The invention relates to the technical field of flue gas denitrification, in particular to a device and method for controlling the flow of ammonia water in a denitrification system. Background technique [0002] The denitrification system refers to preventing excessive nitrogen oxides NO from being produced after coal combustion. x A system that pollutes the environment and denitrates coal. Most denitrification systems use selective catalytic reduction technology SCR for denitrification. [0003] SCR is the most mature flue gas denitrification technology at the present stage. Specifically, ammonia water is used to reduce NO x The reduction function, the action of the catalyst drops NO x reduced to N which has little effect on the atmosphere 2 and water. Due to the above reasons, ammonia water is usually used as the reducing agent for the denitration reaction in the SCR denitration technology, and its flow control is an important link in the SCR pr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/86B01D53/90B01D53/56
CPCB01D53/8631B01D53/8696B01D53/90B01D2251/2062B01D2258/0283
Inventor 申桂飞王义宏杨怀锋王冲仇洪波
Owner SHANDONG GUOSHUN CONSTR GRP
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