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Heat treatment furnace

A heat treatment furnace and heat storage technology, applied in the direction of waste heat treatment, furnace, furnace components, etc., can solve the problems of difficulty in shortening the flame length, insufficient reduction of NOX production, flame temperature rise, etc., and achieve the effect of stable alternate switching operation

Active Publication Date: 2021-08-31
CHUGAI RO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, if the supply of fuel and combustion air is increased as described above, the flame temperature during combustion will increase, and it will not be possible to sufficiently reduce NO. X In addition, it is difficult to make the diameter of the flame sufficiently large along the diameter-enlarging portion provided on the furnace wall, and it is difficult to shorten the length of the flame during combustion, so that the processing objects in the furnace come into contact with the flame and the processing Objects causing damage such problems

Method used

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Embodiment Construction

[0052] Hereinafter, a heat treatment furnace according to an embodiment of the present invention will be described in detail based on the drawings. In addition, the heat treatment furnace of this invention is not limited to the facility shown in the following embodiment, It can change suitably and implement in the range which does not change the idea of ​​invention.

[0053] Here, in the heat treatment furnace of the first embodiment, if figure 1 As shown in (A), (B), etc., in the furnace 10, the top-side regenerative burner 20 is provided at the center of the circular top 11, and the cylindrical main body 12 of the furnace 10 is provided with a There are two main body side regenerative burners 30 , 30 , and these two main body side regenerative burners 30 , 30 are located on opposite sides across the central portion of the furnace 10 .

[0054] In addition, if figure 2 As shown in (A) and (B), when the combustion operation is performed in the above-mentioned top side regen...

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Abstract

A heat treatment furnace, in which a top-side regenerative burner (20) provided on a top (11) and a main body-side regenerative burner (30) provided on a main body (12) are alternately switched for combustion operation During the heat storage operation, when the top side regenerative burner performs the combustion operation, the heated combustion air is supplied and exhausted from the top side while rotating along the inner circumference of the cylindrical top side guide path (23). (24) Feed into the furnace (10) and burn while rotating the fuel. On the other hand, when the regenerative burner on the main body side performs combustion operation, the heated combustion air is guided through the main body side The fuel is supplied along the inner circumference of the main body part in the furnace from the main body side supply and exhaust port (31) through the path (32), and the fuel is burned while rotating along the inner circumference of the main body part.

Description

technical field [0001] The present invention relates to a heat treatment furnace, which adopts a regenerative burner to alternately switch between combustion operation and heat storage operation. During the combustion operation, the heat is heated and burned by the heat stored in the heat storage part of the heat storage part. Air is used, and the heated combustion air passes through the guide path and is guided into the furnace from the supply and exhaust port, and the fuel supplied from the fuel supply nozzle and the above-mentioned heated combustion air are combusted in the furnace, and the other On the one hand, during the heat storage operation, the combustion exhaust gas burned in the furnace is guided to the heat storage part containing the heat storage element to store the heat of the combustion exhaust gas in the heat storage element. In particular, in a heat treatment furnace in which regenerative burners are provided on the top and main body of the furnace, respecti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27D17/00F23L15/00
CPCF23L15/00F27D17/004F27D2017/007Y02E20/34
Inventor 河本祐作川端健介
Owner CHUGAI RO CO LTD
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