Burner for suspension roaster and application thereof

A suspension roasting furnace and main combustion technology, applied in furnaces, burners, combustion methods, etc., can solve the problems of large amount of high-temperature pollutants and insufficient fuel combustion, etc., to reduce local high-temperature areas, reduce generation, and stabilize burning effect

Active Publication Date: 2017-12-26
KEDA MAS CLEAN ENERGY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Burner for suspension roaster and application thereof
  • Burner for suspension roaster and application thereof
  • Burner for suspension roaster and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 with figure 2 As shown, a burner for a suspension roaster includes a center pipe 1 and a gas sleeve 2, the gas sleeve 2 is set outside the center pipe 1, and the center pipe 1 has a central direct current A gas channel 4, a swirl gas channel 7 is defined between the outer wall of the central tube 1 and the inner wall of the gas casing 2, and the swirl gas channel 7 includes a straight section and an inclined section sequentially arranged along the gas flow direction, The straight section is parallel to the central axis of the central pipe 1 , the inclined section is inclined inwardly relative to the central axis of the central pipe 1 , and a swirling device is arranged in the swirling gas channel 7 .

[0038] The central pipe 1 provided inside the gas bushing divides the incoming gas into two parts: the central direct flow gas and the swirling flow gas. The direct-flow gas and the swirling gas premixed have strong penetrating power and diffusion abil...

Embodiment 2

[0040] Such as figure 1 with figure 2As shown, a burner for a suspension roaster, its structure is different from that of Example 1 in that: the swirl device is located in the inclined section of the swirl gas channel 7, so that the gas flows through the swirl When the gas channel is 7, a certain swirl intensity is obtained, so this part of the gas has a strong diffusion ability after being sprayed out from the burner, and can be fully mixed with the supporting gas.

Embodiment 3

[0042] Such as image 3 As shown, a burner for a suspension roaster, its structure is different from that of Example 2 in that: the swirl device is a swirl sheet 6, and the swirl sheet 6 is connected to the outer wall of the central tube 1 Fixed connection, and the swirl plate 6 is inclined in the same direction relative to the central axis of the gas sleeve 2, the swirl plate 6 changes the flow state of the gas in the swirl gas channel, and enhances the swirl of this part of the gas Intensity, thereby promoting the mixing of gas and supporting gas.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/24F23D14/70F23D14/76F27D99/00
CPCF23D14/24F23D14/70F23D14/76F27D99/0033
Inventor 胡振中秦亚杰毕大鹏李金超
Owner KEDA MAS CLEAN ENERGY
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