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Method and burner for heating furnaces for metalworking

一种熔炉、燃料的技术，应用在燃烧器、使用气态燃料和粉末燃料的燃烧、气体燃料燃烧器等方向，能够解决无法再保证燃烧系统安全性、损坏等问题

Active Publication Date: 2022-02-08
LINDE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These deposits can also deflect high-velocity jets against the refractory walls of the furnace, causing serious damage
In the worst case, the safety of the combustion system can no longer be guaranteed

Method used

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  • Method and burner for heating furnaces for metalworking
  • Method and burner for heating furnaces for metalworking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025]figure 1 One of the oxidizing gas supply lines 20 for heating the burner 10 of the aluminium recovery furnace 40 is schematically shown. In such furnaces so far, junctions have been deposited around the burner's oxygen nozzles / supply lines (this can also apply to fuel supply, although it is more common on oxygen lines due to the much higher injection velocity), usually deposited The material is scum fines and / or coarse solid particles - they may also be recycled liquid metal droplets that deposit and then may solidify near the nozzle outlet. It is an object of the present invention to attempt to prevent the recirculation of liquid copper and slag droplets during the blowing phase in a Pierce Smith converter. Such knots build up around the oxygen supply line 20 on the wall of the refractory 50 . for including figure 1 For the burner 10 of the supply line shown, this junction is greatly reduced.

[0026] figure 1 The example shows one of the two oxygen supply lines 20 ...

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PUM

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Abstract

The invention relates to a method for heating a furnace (40) for metalworking, said method being carried out by supplying an oxidizing gas into the furnace (40) via an oxidizing gas supply line (20), and feeding Fuel is supplied via a fuel supply line (30) into the furnace (40), whereby the fuel is combusted in the furnace (40), wherein it is supplied in the form of a central oxidizing gas stream (24) together with a first shielding gas stream (25) Oxidizing gas, and / or fuel supply in the form of a central fuel stream (34) together with a second shielding gas stream (35), and related burners (10).

Description

technical field [0001] The present invention relates to a method and burner for heating a furnace for metalworking by supplying an oxidizing gas into the furnace through an oxidizing gas supply line and supplying fuel through a fuel supply line to the furnace In a furnace, thereby burning fuel in the furnace. Background technique [0002] In the metal production industry, melting, tapping and casting operations need to be optimized in the following areas. The ladle in the furnace must be preheated and heated to the desired temperature efficiently, while minimizing heat loss through the flue gases. Temperature flame shape, heating window and stoichiometric ratio can be difficult to control with conventional heating processes. The resulting adverse conditions can shorten the service life of the refractory. Furthermore, smog and pollution as well as emission of harmful gases such as NOx must be avoided. Existing flameless and semi-flameless burner technologies provide an ef...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D1/76C21C5/00F23C1/12
CPCC21D1/76F23D14/22F23D14/32F23D14/58C21C5/5217F27D3/16Y02P10/20F23D2900/21001Y02P10/32F27D99/0033C21C7/0075C21C5/00F23C1/12
Inventor M·阿德多尔夫J·冯舍勒
Owner LINDE AG