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Annular furnace and annular furnace heat supply process

A technology of ring furnace and process, which is applied in the field of kiln engineering and furnace, and can solve the problems of difficulty in providing a temperature field that meets the process requirements, complex process of ring furnace, small inner ring space, etc.

Inactive Publication Date: 2009-05-27
CISDI ENG CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The asymmetry of the heating load is difficult to adapt to the HTAC technology with strong symmetry requirements
[0005] (2) The annular furnace process is complicated, and the temperature requirement of the furnace heating process is high. It is difficult to provide a temperature field that meets the process requirements only by the regenerative burner
[0006] (3) The structure of the annular furnace is special, and the available space of the inner ring is relatively small, which makes it difficult to meet the installation requirements of the huge double regenerative burners

Method used

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Embodiment Construction

[0018] With reference to accompanying drawing, concrete implementation of the present invention is described further:

[0019] According to the heating characteristics, the division of the entire annular furnace and the arrangement of the burners are as follows: figure 1 Shown: heat recovery section 1, preheating section 2, first heating section 3, second heating section 4, third heating section 5, first soaking section 6 and second soaking section 7; heat recovery section 1 is not arranged for supply Thermal equipment, the billet absorbs the waste heat of the flue gas in this section; in the preheating section 2, flame-adjusting burners 8 are arranged on the inner and outer ring furnace walls of the annular furnace. When the output increases, the preheating temperature of the billet in the heat recovery section When the process requirements cannot be met, the flame-adjusting burner 8 is used to further preheat the billet; the blast furnace gas regenerative burner 9 is arrange...

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Abstract

The invention relates to a circular furnace and heat supply technique thereof, belonging to technique field of furnace and kiln engineering. Combination heat supply of a heat accumulation burner and a normal burner is provided on the whole circular furnace. The circular furnace is divided into a heat recover segment, a warm-up segment, a heating segment and a soaking segment from the furnace tail to the furnace head. A heat supply device is not disposed on the heat recovery segment of the circular furnace, fume in the furnace flowing through the heat recovery segment transfers heat to material blank for primary warm-up of the material blank. A flame adjusting burn is disposed on the inner-outer circular furnace wall of the circular furnace warm-up segment for supplying heat to the circular furnace, and the material blank is further warmed up. The normal flame burner is disposed on the top of the circular furnace soaking segment for soaking material blank. Large temperature field required by installation and technique of double heat accumulation burners is provided, application of blast furnace gas with low heat value in the circular furnace is effectively solved, and the invention can be used in circular furnace in the steel industry.

Description

technical field [0001] The invention belongs to the technical field of furnace and kiln engineering, and relates to a ring furnace and a ring furnace heat supply process, in particular to a ring furnace and a ring furnace heat supply process using blast furnace gas double regenerative burners and conventional burners for joint heating . Background technique [0002] Heat storage combustion (HTAC) technology can recover exhaust gas waste heat to the limit, save energy, and realize high-temperature air and gas preheating at 800-1100°C, effectively solving the problem of heating blast furnace gas with low calorific value in pusher type heating furnaces, slab furnaces, etc. The utilization of thermal equipment with higher temperature has significant economic and social benefits. In recent years, with the gradual emergence of domestic energy shortages, regenerative combustion technology has gradually become favored by various industries, especially the steel industry. [0003] ...

Claims

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Application Information

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IPC IPC(8): F27B13/00F27B13/12F23C5/00
Inventor 潘登洪肖海东李志坚吴华兵张阿福卫恩泽陈婉
Owner CISDI ENG CO LTD
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