A multi-channel rotary kiln burner with directional oxygen-enriched combustion

Abstract

The invention discloses a multi-channel rotary kiln burner with directional oxygen-enriched combustion, comprising a multi-channel burner body. The outer side of the outer axial flow air sleeve of the multi-channel burner body is welded with an externally-mounted rich air casing through two surrounding plates. Oxygen channel casing, an arc-shaped diversion component is provided on the side of the external oxygen-enriched channel casing close to the outer axial flow wind casing, and an external oxygen-enriched oxygen-enriched casing is formed between the arc-shaped diversion component and the outer axial flow wind casing. The air channel, the arc of the external oxygen-enriched air channel is 10-180°, and is arranged at the lower part of the outer axial flow wind sleeve of the multi-channel burner body, and the multi-channel burner body and the oxygen-enriched air channel are concentric set up. The invention can form an arc-shaped, flat, uniform oxygen-enriched flow with a suitable angle and a suitable range at the bottom of the lower abdomen of the flame formed by the burner, and inject it into the designated area in a directional and precise manner, so as to realize the directional oxygen-enriched air to support combustion and achieve better combustion efficiency. combustion effect.

Description

technical field [0001] The invention relates to the technical field of combustion equipment, in particular to a multi-channel rotary kiln burner with directional oxygen-enriched combustion support. Background technique [0002] The multi-channel burner is the core combustion equipment widely used in industrial kilns such as boilers, decomposition furnaces, heating furnaces, and rotary kilns. Fully burnt to release heat under the support of wind. [0003] Since the multi-channel burner has been used in many industrial fields such as steel, cement, and chemical industry, the multi-channel burner has defects in its working principle and structure, resulting in incomplete combustion of pulverized coal and poor flame shape, especially in the cement industry, because Poor flame shape and incomplete combustion of pulverized coal lead to high coal consumption, unstable clinker quality, and process quality problems such as crusting, ring formation, egg formation, and yellow core. ...

AI Technical Summary

Problems solved by technology

There are two main disadvantages of this technical route: one is that it is impossible to directly form a relatively concentrated high-temperature area in the material layer that needs to be calcined, which is not conducive to better improving the calcination efficiency; the other is that the combustion process NOx will significantly increase the generation of

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