Multi-channel rotary kiln combustor with directional oxygen-enriched combustion supporting function

Abstract

The invention discloses a multi-channel rotary kiln combustor with a directional oxygen-enriched combustion supporting function. The multi-channel rotary kiln combustor comprises a multi-channel combustor body, an oxygen-enriched air sleeve is arranged on the outer side of the multi-channel combustor body, an arc-shaped flow guide assembly and an arc-shaped sealing assembly are arranged in the oxygen-enriched air sleeve in the circumferential direction, the sum of the radian of the arc-shaped flow guide assembly and the radian of the arc-shaped sealing assembly is 360 degrees, an arc-shaped oxygen-enriched air channel is formed between the arc-shaped flow guide assembly and the oxygen-enriched air sleeve, and the multi-channel combustor body and the oxygen-enriched air channel are concentrically arranged. Arc-shaped and flat uniform oxygen-enriched air flow with a proper angle and a proper range can be formed at the bottom of the lower belly part of the outer axial flow air sleeve and is directionally and accurately injected into a specified area, so that directional oxygen-enriched air combustion supporting is realized, a better combustion-supporting effect is achieved, the combustion effect and the fuel burnout rate are favorably improved, the combustion temperature of the specified area is improved, and calcination effect is improved, coal consumption is reduced, and clinker quality is improved.

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 boilers, calciners, heating furnaces, rotary kilns and other industrial kilns. Under the combustion aid of the wind, the combustion is fully released to release heat. [0003] Since multi-channel burners have been used in many industrial fields such as steel, cement, and chemical industry, there are defects in the working principle and structure of multi-channel burners, which lead to incomplete combustion of pulverized coal and poor flame shapes, 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 crust, ring, egg, 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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