SCR (selective catalytic reduction) denitration flue gas flow guide device

Abstract

The invention relates to an SCR (selective catalytic reduction) denitration flue gas flow guide device which comprises a plurality of flow guide rings, a plurality of front support plates and rear support plates. The flow guide rings with rectangular sections are arranged in a concentric sleeving manner and comprise flow guide ring front ends and flow guide ring rear ends, and the sizes of the sections of the flow guide rings are gradually enlarged from the flow guide ring front ends and the flow guide ring rear ends; the front support plates are connected with the flow guide ring front ends of the adjacent flow guide rings; the rear support plates are connected with the flow guide ring rear ends of the multiple flow guide rings. The SCR denitration flue gas flow guide device has the advantages that the longitudinal section of a flue is divided into regions with different expansion angles, and accordingly the problem of circumferential non-uniformity of internal flow fields of expansion cavities can be solved.

Description

technical field [0001] The invention relates to the field of flue gas denitrification equipment, in particular to an SCR method denitrification flue gas diversion device. Background technique [0002] The existing SCR denitrification flue gas has high requirements on the uniformity of the flue gas transmission in the flue, and the flow field inside the expansion chamber of the existing flue is not uniform in the circumferential direction. Contents of the invention [0003] Aiming at the problem of uneven circumferential flow field in the existing flue expansion cavity, the present invention proposes an SCR denitrification flue gas guide device, which includes multiple guide rings, multiple front support plates and rear support plates. The plurality of guide rings are concentrically arranged, the cross section of the guide ring is rectangular, the guide ring includes the front end of the guide ring and the rear end of the guide ring, the cross-sectional size of the guide ri...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem of uneven circumferential flow field in the existing flue expansion cavity, the present invention proposes an SCR denitrification flue gas guide device, which includes multiple guide rings, multiple front support plates and rear support plates. The plurality of guide rings are concentrically arranged, the cross section of the guide ring is rectangular, the guide ring includes the front end of the guide ring and the rear end of the guide ring, the cross-sectional size of the guide ring is from the The front end of the guide ring gradually becomes larger toward the rear end of the guide ring; the front support plate is connected to the front end of the guide ring in the adjacent guide ring; the rear support plate is connected to the plurality of guide rings The rear connection of the deflector ring

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