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Method and device for heating to-be-heated object

A technology of heated objects and heating methods, applied in the direction of combustion methods, burner control devices, lighting and heating equipment, etc., can solve the problems of long process time and decreased manufacturing efficiency, and achieve the reduction of carbon dioxide and nitrogen oxides and efficient drying and heating effect

Active Publication Date: 2019-10-29
NIPPON SANSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, if the time required for preheating the molten metal container is too long, it is required to perform preheating in a shorter time due to a decrease in manufacturing efficiency due to a long process time

Method used

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  • Method and device for heating to-be-heated object
  • Method and device for heating to-be-heated object
  • Method and device for heating to-be-heated object

Examples

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Embodiment Construction

[0036] Below, refer to the appropriate Figure 1 to Figure 6 The method and apparatus for heating an object to be heated according to one embodiment of the present invention will be described. In addition, in order to facilitate the understanding of features, in the drawings used in the following description, characteristic parts are sometimes enlarged for convenience, and the dimensional ratios of each component are not necessarily the same as the actual ones. In addition, the materials etc. which are illustrated in the following description are an example, and this invention is not limited to these materials, In the range which does not change the gist of this invention, this invention can be implemented with a proper change.

[0037] The heating method and heating device of the object to be heated according to the present invention can be applied, for example, to preheating a molten metal ladle or a tundish used for transporting molten iron or steel in an ironmaking or stee...

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Abstract

The purpose of the present invention is to provide a method and a device for heating a to-be-heated object, said method and device making it possible to uniformly heat the to-be-heated object in a short time, greatly reduce the generation of carbon dioxide, nitrogen oxides, etc., and allow drying and heating to be carried out efficiently in consideration of the environment. The present invention provides a method for heating a to-be-heated object by supplying a fuel fluid (M1, M2) and a burn-supporting gas (G3) and using, as a heat source, a flame (2) obtained by combusting these, the method comprising gradually increasing the oxygen concentration in the burn-supporting gas (G3) supplied to the burner (3) and thereby increasing the rate of temperature increase of the to-be-heated object; and a device (1) for heating a to-be-heated object, the device (1) being provided with a burner (3) for heating the to-be-heated object, a flow rate control unit (4) for controlling the flow rates of the fuel fluid (M1, M2) and the burn-supporting gas (G3), and a computation unit (5) for transmitting combustion information about the burner (3) to the flow rate control unit (4). The flow rate control unit (4) gradually increases the oxygen concentration in the burn-supporting gas (G3) supplied to the burner (3) and increases the rate of temperature increase of the to-be-heated object.

Description

technical field [0001] The invention relates to a heating method and a heating device for an object to be heated. Background technique [0002] In ironmaking or steelmaking plants, hot metal pots and molten steel pots (hereinafter, sometimes referred to as ladles or molten metal ladles) used to transport molten iron or molten steel are generally provided with heat-resistant The structure of refractory materials such as bricks (refractory bricks) can maintain the temperature of molten iron and molten steel contained inside. [0003] When pouring molten iron or molten steel into the ladle, first, after removing moisture from the inner surface of the refractory, in order to prevent the temperature drop of the molten iron and molten steel, it is necessary to pre-dry and heat (preheat) to about 1,000-1,400°C. As a drying and heating method of such a ladle, there exists the method of drying and heating using a burner, for example (for example, refer patent document 1). [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23L7/00B22D41/015F23N5/00
CPCB22D41/015F23L7/00F23N5/00Y02E20/32F23C6/042F23D14/22F23D14/32F23L7/007F23L2900/07005F23L2900/07006F23N2237/26F23N2237/28F23N1/022F23N5/022F23M2900/05021F23M5/025Y02E20/34F23N2223/08F23N2235/16F23N2237/32F23N2235/02F23D2200/00F23D2208/00F23D2211/00
Inventor 萩原义之松村孝之清野尚树
Owner NIPPON SANSO CORP
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