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Coal gasification burner

A nozzle and coal slurry technology, applied in the field of burners, can solve problems such as complicated structural measures

Inactive Publication Date: 2010-12-29
LINDE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The greater the pressure difference between the two sides of the cover tube, the more difficult it is to meet this requirement, and the more complicated the structural measures required

Method used

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  • Coal gasification burner
  • Coal gasification burner

Examples

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Embodiment Construction

[0017] The examples describe part of the burner head of a reaction burner, via which a coal slurry as fuel and temperature moderator and oxygen as oxidant can be supplied to the reaction chamber for conversion there by partial oxidation.

[0018] The burner head comprises three concentrically arranged burner tubes A, I and Z, which each have a circular cross section. Oxygen O can be introduced into the downstream reaction chamber (not shown) through the conveying channel formed by the outer burner tube A and the inner burner tube I and through the central burner tube Z, while the coal slurry K is provided for transporting The delivery channel formed by the inner burner tube I and the central burner tube Z is defined. During burner operation, the reaction chamber-side end of the inner burner tube I is subjected to a strong thermal load, since it is only relatively weakly cooled by the oxygen flow. In order to avoid damage to the inner burner tube I, the inner burner tube has a...

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Abstract

The present invention relates to a burner with a burner head and burner tubes (A, I, Z), arranged in the burner head, which are made of metal and are intended for feeding at least one fuel (K) and an oxidizing agent (O) into a reaction space. At least one of the burner tubes (I) is provided with a cladding (V) which is composed of a ceramic material and entirely or partially covers the inner or the outer surface of the burner tube so that hot gas corrosion and mechanical abrasion are avoided. In order to minimize the mechanical loads acting on the cladding, the ceramic cladding (V) is connected to the metallic burner tube (I) by means of a form-fitting connection.

Description

technical field [0001] The invention relates to a burner with a burner head and burner tubes made of metal arranged in the burner head for feeding at least one fuel and an oxidant into a reaction chamber, wherein at least one of the burner tubes One is provided with a coating made of ceramic material which completely or partially covers the inner or outer surface of the burner tube. Background technique [0002] Such burners are used, for example, in the production of synthesis gas in order to introduce the coal slurry (Kohles slurry) and the oxidizing agent through separate feed channels into the reaction chamber, where it is converted by partial oxidation. The conversion is typically carried out at pressures between 1 and about 80 bar, where the flame temperature reaches 1200-2000°C. [0003] According to the prior art, the service life of the burner under such operating conditions is only a few months, since the burner is subjected to a high thermal load and the coal slu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/50
CPCC10J2300/093C10J3/506F23D14/76C10J2200/152Y02E20/18F23D2201/10C10J2300/0973F23D1/005F23D2900/00018F23D2201/30C10J2300/0959
Inventor H·陶茨J·费斯特尔
Owner LINDE AG
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