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Multistage combustor, molten steel tank preheating equipment and application method thereof

A technology of burner and stage combustion, which is applied in the direction of combustion method, burner, lighting and heating equipment, etc., which can solve the problem of capital occupation, high maintenance cost and management cost, long baking operation time of turnover steel tank, and tapping temperature requirements Higher problems, to achieve the effect of promoting uniform distribution and heat transfer, reducing the generation of hot spots in the tank, and uniform and diffuse flames

Pending Publication Date: 2019-12-24
MAANSHAN IRON & STEEL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are mainly the following problems in the preheating of the molten steel tank: the flame of the current air-assisted combustion baking burner has no stiffness, and the flame is mainly concentrated in the upper half of the molten steel tank, which cannot effectively transfer heat to the bottom of the molten steel tank, and the temperature uniformity in the ladle is poor; according to Feedback from on-site operators shows that the current average baking temperature of molten steel tanks is about 600°C, and the heat stored in the ladle is low. After the molten steel is put into the ladle, the temperature of molten steel drops greatly, so the requirement for tapping temperature is high; the baking operation time of the turnover steel tank is long , resulting in a large number of turnover packages; the number of turnover steel tanks participating in the production is as many as 30 sets, and the capital occupation, maintenance costs and management costs are high

Method used

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  • Multistage combustor, molten steel tank preheating equipment and application method thereof
  • Multistage combustor, molten steel tank preheating equipment and application method thereof
  • Multistage combustor, molten steel tank preheating equipment and application method thereof

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Embodiment Construction

[0022] With reference to the accompanying drawings, the specific implementation of the present invention will be further described in detail through the description of the best embodiment.

[0023] A multi-stage combustor. The multi-stage combustor 1 includes a burner body. The burner body is provided with an intake pipe for gas to enter; and the burner body is provided with a combustor for gas and oxygen combustion. Chamber 3; the combustion chamber 3 includes a combustion chamber nozzle 32, the combustion chamber nozzle 32 communicates with the outer side of the burner body; the burner body is provided with an ignition gun 2 for ignition; one end of the ignition gun 2 It is inside the burner body, and the other end extends to the combustion chamber 3; the intake pipe includes a gas intake pipe 4 and a flame-stabilized intake pipe 5; the gas intake pipe 4 and a flame-stabilized intake pipe 5 and the combustion chamber 3 is connected; the present invention discloses a multi-stage...

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Abstract

The invention relates to the field of molten steel tank preheating equipment, in particular to a multistage combustor, molten steel tank preheating equipment and an application method thereof. The combustor comprises a combustor main body; the combustor main body is provided with an intake pipe for gas feeding; the combustor main body is provided with a combustion chamber for gas and oxygen combustion; the combustion chamber comprises a combustion chamber nozzle; the combustion chamber nozzle communicates with the outer side surface of the combustor main body; and the combustor main body is provided with an ignition gun for ignition. The invention discloses the multistage combustor structure; the structure of the combustor is optimized; and pure oxygen is adopted to replace air as the combustion assisting medium, so that the heat loss caused by participation of nitrogen and inert gas in the air in the heat exchange is reduced, and the system heat efficiency and the molten steel tank heating speed can be greatly improved.

Description

Technical field [0001] The invention relates to the field of molten steel tank preheating equipment, in particular to a multi-stage burner, a molten steel tank preheating equipment and a use method thereof. Background technique [0002] At present, the preheating of molten steel tanks mainly has the following problems: the current air-assisted baking burner flame has no rigidity, and the flame is mainly concentrated in the upper half of the molten steel tank, which cannot effectively transfer heat to the bottom of the molten steel tank, and the temperature uniformity in the ladle is poor; The on-site operators feedback that the current baking temperature of the molten steel tank is about 600℃ on average, and the heat storage in the ladle is low. After the molten steel enters the ladle, the temperature of the molten steel drops greatly, so the tapping temperature is higher; the baking operation time of the turnover molten steel tank is long , Resulting in a large number of turnove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23D14/22F23D14/46B22D41/015
CPCF23D14/22F23D14/46B22D41/015Y02E20/34
Inventor 王勇刘前芝尹丰胡以元袁东明鲍磊张仕洋孙波牛金印
Owner MAANSHAN IRON & STEEL CO LTD
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