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Burner

A burner and connecting unit technology, applied in burners, gas fuel burners, combustion types, etc., can solve problems such as uneven distribution of gas flow and the influence of oxygen-containing gas outflow

Active Publication Date: 2010-12-08
AIR PROD & CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in an uneven distribution of gas flow over the coaxial channels, which can also have an effect on the outflow of oxygen-containing gas

Method used

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Experimental program
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Embodiment Construction

[0027] figure 1 The illustrated burner 1 is used for the partial combustion of carbonaceous fuels such as pulverized coal carried in nitrogen or carbon dioxide gas. The burner 1 comprises a central channel 2 . The central channel 2 is defined by a cylindrical inner wall 3 having an upstream portion 3A and a downstream portion 3B. The central channel 2 has a discharge outlet 4 for supplying airborne fuel to the combustion zone.

[0028] Arranged concentrically around the inner wall 3 is a cylindrical outer wall 5 . The outer wall 5 has an upstream portion 5A and a downstream portion 5B. The inner wall 3, the outer wall 5 define an annular coaxial channel 6 for supplying oxygen-containing gas. The coaxial channel 6 has an open discharge end 7 which forms an outlet for the oxygen-containing gas to flow into the combustion zone.

[0029]The inner wall 3 has a constant inner diameter. The downstream inner wall portion 3B has a raised portion 8 . The outer diameter of the rai...

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PUM

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Abstract

The invention relates to a burner, particularly for the gasification of solid carbonaceous materials by partial combustion. The burner comprises a central channel (2) and at least one coaxial channel (6), the channels leading from a upstream supply side to a downstream discharge end. The channels (2, 6) are defined by concentric walls (3, 5) having free downstream outer ends profiled to define anannular slit (10) forming a discharge end of the coaxial channel (6) and converging towards an adjacent discharge end of the central channel (2). A connection block (11) intersects at least the coaxial channel (6), and optionally also present cooling jackets. The block (11) is provided with one or more openings (12) in line with the corresponding channel parts at both sides of the block (11).

Description

technical field [0001] The present invention relates to a burner comprising a central passage and at least one coaxial passage surrounding the central passage, the passages extending from an upstream supply side to a downstream discharge end for supplying individual co-reactive gases or gases to the combustion zone. carrier medium flow. Such a burner is particularly suitable for use in the partial combustion of carbonaceous fuels, such as finely divided solid fuels carried by a gas (such as pulverized coal carried by a gas such as nitrogen and / or carbon dioxide), using oxygen-containing gases, e.g. Used to produce pressurized synthesis gas, fuel gas or reducing gas. Background technique [0002] Partial combustion (also known as gasification) of solid carbonaceous fuels is obtained by reacting the fuel with oxygen. This fuel mainly contains carbon and hydrogen as combustible components. Airborne finely divided carbonaceous fuel and oxygen-containing gas flow at relatively...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D1/00
CPCF23D14/78F23D1/00Y02E20/30
Inventor A·博尔H·G·范席
Owner AIR PROD & CHEM INC