Oxy-fuel combustion system for steel rolling heating furnace

An all-oxygen combustion and heating furnace technology, applied in the field of heating furnaces, can solve problems such as combustion processes and methods that do not involve all-oxygen heating furnaces, and achieve the effects of ensuring heating quality and performance, saving construction investment, and reliable sealing performance.

Pending Publication Date: 2022-07-01
SINOSTEEL ANSHAN RES INST OF THERMO ENERGY CO LTD
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Problems solved by technology

But this invention does not involve the specific combustion process and method of the oxy-fuel heating furnace

Method used

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  • Oxy-fuel combustion system for steel rolling heating furnace
  • Oxy-fuel combustion system for steel rolling heating furnace
  • Oxy-fuel combustion system for steel rolling heating furnace

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Embodiment Construction

[0042] The specific embodiments provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0043] like figure 1 As shown, an all-oxygen combustion system for a steel rolling heating furnace includes a heating furnace, a fuel system, a combustion-supporting system, a nitrogen purging system, a smoke exhaust system, and a control system. The heating furnace includes a preheating section 1, a heating section 2, and a soaking section 3. The heating section 2 and the soaking section 3 are divided into an upper heating zone and a lower heating zone. Preheating section 1 does not have a heating zone. The fuel system includes fuel pipelines and fuel valve groups. Combustion-supporting system includes oxygen pipeline and oxygen valve group. The nitrogen purge system includes nitrogen line 35 and nitrogen valve 36 . The smoke exhaust system includes an exhaust flue 27 , a smoke exhaust valve 28 and a chimney 29 . The control ...

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Abstract

The invention provides an oxygen-fuel combustion system for a steel rolling heating furnace. The oxygen-fuel combustion system comprises the heating furnace, a fuel system, a combustion-supporting system, a nitrogen purging system, a smoke exhaust system and a control system. The heating furnace comprises a preheating section, a heating section and a soaking section. Total-oxygen flameless combustors are arranged on the side walls of the upper heating area and the lower heating area of the heating section, and the total-oxygen flameless combustors are arranged in an up-and-down layered and left-and-right staggered mode. Total-oxygen flameless combustors are arranged on the side walls of the upper heating area and the lower heating area of the soaking section, and the total-oxygen flameless combustors are arranged in an up-and-down layered and left-and-right staggered mode. Total-oxygen flameless combustors are arranged on the end wall of the heating area on the upper portion of the soaking section and are horizontally arranged in a single-layer mode. The control system comprises a blank tracking system, an intelligent temperature control system, a hearth pressure control system, a linkage alarm protection system and a blank heat preservation rolling waiting system. The combustion efficiency and the heat transfer efficiency of the steel rolling heating furnace are improved, and the purposes of improving productivity, saving fuel, reducing emission and improving product quality are achieved.

Description

technical field [0001] The invention relates to the technical field of heating furnaces, in particular to an all-oxygen combustion system for a steel rolling heating furnace. Background technique [0002] There are a large number of combustion equipment in the iron and steel industry, and the development of advanced combustion technology to improve the level of energy utilization is the most effective CO 2 and pollutant reduction measures. Oxygen combustion technology is an energy-saving combustion technology developed in modern times. Oxygen combustion is to change the traditional fuel-air combustion system to a fuel-oxygen combustion system. When the oxygen purity in the fuel-oxygen system reaches 90%-100%, it is called total oxygen combustion, because there is no nitrogen in the air during the combustion process. Participation in the combustion process can greatly improve the combustion efficiency and reduce the NOx emission during the combustion process. At the same ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27B9/02F27B9/06F27B9/36F27B9/40C21D9/70F23N5/00
CPCF27B9/028F27B9/06F27B9/36F27B9/40C21D9/70F23N5/00
Inventor 李鹏元谢国威徐阳门传政张世煜范天骄徐永权赵健
Owner SINOSTEEL ANSHAN RES INST OF THERMO ENERGY CO LTD
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