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Method for correcting combustion regulation of a group of combustion chambers and device for implementing the method

A combustion chamber and equipment technology, which is applied in combustion methods, combustion equipment, combustion chambers, etc., can solve the problems of not considering the change of the properties of the combustion accelerant and the combustion parameters of the controlled equipment itself.

Active Publication Date: 2015-10-14
FIVES STEIN SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The system does not take into account changes in the properties of the oxidizer, nor the own combustion parameters of the controlled equipment, i.e. the unburned rate or the NOx emission rate of nitrogen oxides

Method used

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  • Method for correcting combustion regulation of a group of combustion chambers and device for implementing the method
  • Method for correcting combustion regulation of a group of combustion chambers and device for implementing the method
  • Method for correcting combustion regulation of a group of combustion chambers and device for implementing the method

Examples

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Embodiment Construction

[0044] with reference to the attached figure 1, it can be seen that a furnace 1 is shown schematically, equipped with radiant tubes 2 which ensure the heating of a metal strip 3 traveling on rollers not shown. Heating is carried out under a protective atmosphere usually consisting of a mixture of nitrogen and hydrogen. In each radiant tube, combustion is ensured in a closed combustion chamber which is separated from the furnace chamber by the radiant tube. Thus having indirect heating.

[0045] with reference to the attached figure 2 , it can be seen that a U-shaped radiant tube 2 is schematically shown. The radiant tube can have other shapes, such as I, P, double P or W shapes. A burner 4 is located at one end of the radiant tube 2 . The flame 5 spreads in the radiant tube and releases energy to the radiant tube wall which heats the furnace chamber and the strip. As it travels through the radiant tube, the heat of the flue gas is dissipated on the radiant tube walls. ...

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PUM

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Abstract

The invention relates to a method for real-time, continuous adjustment of a set of thermal combustion chambers (2, 2i) having similar characteristics supplied by the same combustive agent (8) and fuel (9) networks, according to which one of the chambers (2i) is used as a reference chamber, combustion parameters are measured (7) in the fumes output from the reference chamber, and the control parameters of all the chambers (2) are adjusted according to the combustion parameters measured at the output of the reference chamber (2i), in particular according to the ratio of combustive agent to fuel and / or the composition of the combustive agent and / or fuel.

Description

technical field [0001] The invention relates to a method for regulating the supply of a group of combustion chambers fed with oxidizers and fuels whose properties are variable. The present invention allows taking into account possible fluctuations in these properties in order to maintain the desired combustion quality. Background technique [0002] Many industrial heating installations consist of a group of separate combustion chambers which are supplied with oxidizer and fuel through a common supply. For example, in the steel industry, heating equipment is furnaces for continuous processing lines of metal strip equipped with radiant tubes. [0003] In many cases, the oxidizer or fuel used has properties that vary over time. For example, when using oxygen-enriched or oxygen-depleted air, or when using fuels that are symbiotic on-site, such as coking gases, steelmaking gases, gas mixtures or even alternative fuels such as biogas or gas. [0004] There are many ways to corr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23C6/02F23N1/00F23N3/00F23N5/00
CPCF23N5/006F23C6/02F23C2201/20F23C2202/20F23C2202/30F23D2203/002F23N1/00F23N3/00F23N5/003F23N2037/02F23N2237/02F23N5/00
Inventor P·吉罗
Owner FIVES STEIN SA