Burner for suspension roaster and application thereof

Abstract

The invention discloses a burner for a suspension roaster and an application thereof, which belong to the field of combustion equipment. The burner comprises a central pipe and a gas sleeve, wherein the gas sleeve sleeves the outer side of the central pipe, a central direct-current gas channel is formed in the central pipe, an eddy flow gas channel is limited between the outer wall of the central pipe and the inner wall of the gas sleeve, the eddy flow gas channel comprises a straight section and an inclined section which are arranged in sequence in the gas flow direction, the straight section is parallel to the central axis of the central pipe, the inclined section is inclined inwards relative to the central axis of the central pipe, and an eddy flow device is arranged in the eddy flow gas channel. According to the burner, the problems of inadequate burning of fuel and high production of high-temperature pollutants in a burning process of an existing suspension roaster are solved, efficient mixing and stable burning of gas and combustion-supporting gas can be realized, a local high-temperature area caused by bad mixing of the gas and the combustion-supporting gas is reduced, and the production of the high-temperature pollutants is reduced.

Description

technical field [0001] The invention belongs to the field of combustion equipment, and more specifically relates to a burner for a suspension roasting furnace and its application. Background technique [0002] The suspension roaster is mainly used for the roasting of aluminum hydroxide in the aluminum industry. Its purpose is to remove the crystallization water and combined water in aluminum hydroxide, and at the same time complete the crystal phase transformation of alumina to generate α-three aluminum oxide. In recent years, the suspension roasting furnace has been rapidly promoted and applied in the aluminum industry due to its advantages of high output and low energy consumption, and has become the main furnace type for alumina roasting in the aluminum industry. However, with the increasingly severe situation of energy and environmental protection, the disadvantages of high pollution and low fuel utilization rate in the production process of suspension roaster have grad...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of insufficient fuel combustion and large amount of high-temperature pollutants in the combustion process of the existing suspension roaster, the present invention provides a burner for a suspension roaster and its application, which can realize efficient mixing and Stable combustion, reduce local high temperature areas caused by poor mixing of gas and supporting gas, and reduce the generation of high temperature pollutants

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