Flue gas flow equalizing and guiding assembly of selective catalyctic reduction (SCR) denitration reactor inlet

A denitration reactor and inlet technology, which is applied in chemical instruments and methods, dispersed particle separation, separation methods, etc., can solve the problems of not involving variable radius guide plates, variable arc lengths, and no quantitative analysis results. The effect of improving catalyst utilization, reducing kinetic energy loss and improving denitration efficiency

Active Publication Date: 2010-07-07
上海电气电站环保工程有限公司 +1
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Problems solved by technology

In this regard, the paper did not give quantitative analysis results
In addition, the paper does not involve the design of variable radius deflectors and variable arc lengths

Method used

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  • Flue gas flow equalizing and guiding assembly of selective catalyctic reduction (SCR) denitration reactor inlet
  • Flue gas flow equalizing and guiding assembly of selective catalyctic reduction (SCR) denitration reactor inlet
  • Flue gas flow equalizing and guiding assembly of selective catalyctic reduction (SCR) denitration reactor inlet

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Embodiment Construction

[0017] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0018] figure 1 The front view of the bend where the third set of deflectors is shown is figure 2 . In this embodiment, the deflectors with variable radius and variable arc length are used to divide the curved passage into equal parts. The connecting arc of the inner and outer pipe walls of the bend is the inscribed circular arc of the two straight pipe flues (horizontal pipe flue and vertical pipe flue) that need to be connected, and the arc is π / 2. Such as figure 2 In a, b shown. The third set of deflectors in the curve (such as figure 2 The radius and arc ...

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Abstract

The invention relates to a flue gas flow equalizing and guiding assembly of a selective catalyctic reduction (SCR) denitration reactor inlet, belonging to the technical field of flue gas denitration of heat power stations. The inlet flue gas flow equalizing and guiding assembly comprises a bend, two straight flue ducts and flow guide plates, wherein the two straight flue ducts are used as connection arcs of the inner and the outer pipe walls of the bend; and a plurality of the flow guide plates are connected with arcs of pipelines positioned at the inner side and the outer side of the bend and sequentially arranged on the internal bend of a gas flow denitration pipeline from inside to outside in a mutually parallel way. The invention can solve the problem of the flue gas flow equalizing and guiding of the bend with great sectional area change by adopting the arc-shaped flow guide plates with different radiuses, optimizes the speed distribution of the SCR denitration reactor inlet and enhances the catalyst utility ratio and the denitration efficiency.

Description

technical field [0001] The invention relates to an improved technology in the technical field of flue gas denitrification for thermal power generation, in particular to a flue gas uniform flow guide assembly at the inlet of an SCR (Selective Catalytic Reduction, Selective Catalytic Reduction) denitrification reactor. Background technique [0002] Existing technologies for flue gas denitrification in thermal power plants include selective catalytic reduction, selective non-catalytic reduction, and electron beam irradiation, among which selective catalytic reduction has high denitrification efficiency, stable operation and wide application. Selective catalytic reduction denitrification process control needs to solve two key problems, one is the high-speed and uniform mixing of flue gas and reducing agent (usually ammonia gas), and the other is the speed at which the flue gas containing reducing agent enters the inlet of the SCR denitrification reactor Distributed uniform contr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/56B01D53/78
Inventor 袁景淇宋善奎王景成金强李雨张硕
Owner 上海电气电站环保工程有限公司
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