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Combustion nozzle with internal cooling channel and external cooling channel for gasifying powdery carbon fuel

A cooling channel and fuel gasification technology, which is applied in the direction of granular/powdered fuel gasification, burners burning powder fuel, burners, etc., can solve the problems of short life, easy burning of powdered carbon fuel burners, etc. , to achieve the effect of prolonging the life and strengthening the cooling effect

Inactive Publication Date: 2011-01-19
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a powdery carbonaceous fuel burner with sufficient cooling, reliability and long service life for the existing powdery carbonaceous fuel burner, which is easy to burn out and has a short life. Burners for gasification of pulverized carbonaceous fuel

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  • Combustion nozzle with internal cooling channel and external cooling channel for gasifying powdery carbon fuel
  • Combustion nozzle with internal cooling channel and external cooling channel for gasifying powdery carbon fuel

Examples

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Embodiment Construction

[0016] The inflow and outflow of the inner cooling channels 3 and 4 and the outer cooling channels 6 and 7 can be switched. That is, channel 3 flows into channel 4 and flows out, or channel 4 flows into channel 3 and flows out; channel 6 flows into channel 7 and flows out, or channel 7 flows into channel 6 and flows out.

[0017] The central channel 1 and the central channel outlet 2 are used to deliver powdered carbonaceous fuel to the gasifier, and the carrier gas for delivering the fuel can be nitrogen or carbon dioxide gas. The central channel 1 can also be used to transport oxygen and water vapor. The inner cooling passages 3 and 4 are arranged around the central passage 1, and the cooling passages 3 and 4 are coaxial with the central passage 1, or not. When the central channel 1 is used to transport pulverized carbonaceous fuel, the channel 3 is used for the inflow of the coolant, and the channel 4 is used for the outflow of the coolant. It is also possible for channel...

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Abstract

The invention discloses a combustion nozzle with an internal cooling channel and an external cooling channel for gasifying a powdery carbon fuel, which is used for partially combusting (gasifying) the powdery carbon fuel and an oxygen-containing gas in a combustion area. The combustion nozzle with the internal cooling channel and the external cooling channel for gasifying the powdery carbon fuel comprises a central channel with an outlet; the internal cooling channel surrounding the central channel is arranged outside the central channel; an annular channel with an air supply opening is arranged outside the internal cooling channel; and the external cooling channel is arranged outside the annular air supply channel. In the invention, the internal and the external cooling channels greatly improve the cooling effect on the combustion nozzle with adequate and reliable cooling, and the long service life of the combustion nozzle is ensured.

Description

technical field [0001] The invention relates to a burner for gasification of powdery carbonaceous fuel with internal and external cooling passages. Background technique [0002] Partial combustion or incomplete combustion of powdered carbonaceous materials (such as pulverized coal, powdered petroleum coke, biomass such as plant fibers, sludge, etc.) is also called gasification. The combustible components of the fuel are mainly carbon and hydrogen, and these components react with the supplied oxygen and water vapor to mainly generate carbon monoxide and hydrogen to complete the gasification process of solid carbonaceous materials. [0003] The gasification process is generally carried out in a gasifier. At present, the more advanced gasification method is pressurized gasification. Nitrogen or carbon dioxide gas is used to send pulverized coal and other powdery carbonaceous materials into the gasifier through the burner, and at the same time, oxygen-enriched gas and water va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D1/00C10J3/48
Inventor 宋鹏云胡明辅朱孝钦
Owner KUNMING UNIV OF SCI & TECH