Graded burning low-NOx turbulent burner

The invention relates to a graded burning low-NOx turbulent burner which comprises a center air pipe. A primary air pipe, an internal secondary air pipe and an external secondary air pipe are sequentially and concentrically arranged on the periphery of the center air pipe from inside to outside, a r...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LIU XIN, JI YA, WANG ZHIYUAN, CAI XINGFEI, WANG GUANGXUAN, LI MING, LIN SHUSHENG, ZHEN XIAOWEI, SUN SHUWENG, CUI XINGYUAN
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention relates to a graded burning low-NOx turbulent burner which comprises a center air pipe. A primary air pipe, an internal secondary air pipe and an external secondary air pipe are sequentially and concentrically arranged on the periphery of the center air pipe from inside to outside, a reburning fuel pipe is further arranged between the internal secondary air pipe and the external secondary air pipe and comprises a front straight section, a middle bent section and a rear straight section, the front straight section, the primary air pipe, the internal secondary air pipe and the external secondary air pipe are concentrically arranged, and the middle bent section and the rear straight section extend away from the internal secondary air pipe; reburning fuel or tail flue gas is led to the inside of the reburning fuel pipe so that graded burning of the turbulent burner can be achieved. NOx emission can be substantially reduced on the basis of guaranteeing efficient and steady burning so that optimizatio