Horizontal continuous feeding and preheating device and strengthened preheating method thereof

A preheating device and horizontal technology, which is applied in the field of metallurgy, can solve the problems of insufficient heat exchange between burner gas and scrap steel, large channel area, and low thermal efficiency, and achieve enhanced preheating effect, improved heat transfer effect, and improved thermal efficiency. Effect

CN107460274AActive Publication Date: 2017-12-12CISDI ENG CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-12-12

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Abstract

The invention belongs to the field of metallurgical technologies and discloses a horizontal continuous feeding and preheating device and a strengthened preheating method of the horizontal continuous feeding and preheating device. According to the scheme, two dust removal openings are correspondingly formed in the front portion and the rear portion of a horizontal continuous feeding and preheating duct, and the horizontal continuous feeding and preheating duct is divided into a strengthened preheating region and a smoke preheating region by the front dust removal opening and the rear dust removal opening; burners are mounted in the strengthened preheating region, and the two dust removal openings are correspondingly connected with smoke adjustment distributors through smoke pipelines; the dust removal negative pressure of the second dust removal opening is balanced by the jet flow dynamic pressure of the multiple rows of bruners in the strengthened preheating region; and the micro-negative pressure requirement of the first dust removal opening is controlled through a pressure sensor, so that the mixing amount of cold air of the first dust removal opening is reduced, the preheating efficiency of the burners and smoke of an electric arc furnace on steel scrap is improved, and the production is more environmentally-friendly.
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Description

technical field

[0001] The invention belongs to the technical field of metallurgy, and in particular relates to a horizontal continuous feeding preheating device and an intensified preheating method thereof. Background technique

[0002] Energy saving, environmental protection, and automation in electric arc furnace steelmaking are always one of the cores of the development of electric arc furnace steelmaking technology.

[0003] The scrap steel preheating electric arc furnace is an energy-saving electric arc furnace. The electric arc furnace scrap steel flue gas preheating technology that emerged in the late 1980s is a typical energy-saving technology, and the representative technology is CONSTEEL (US5400358). CONSTEEL technology has experienced nearly 30 years of development and has become relatively mature. Its flat molten pool smelting reduces the impact on the power grid, has the advantage of reducing the maintenance of the electric furnace body, and has a certain energ...

Examples

Embodiment Construction

[0035] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] As shown in the figure, the horizontal continuous feeding preheating device in the present invention includes a horizontal continuous feeding preheating duct 1 and an electric arc furnace 2, and the horizontal continuous feeding preheating duct 1 is provided with first The dust removal port 3 and the second dust removal port 4, the first dust removal port 3 is located behind the feed sealing port 5 of the horizontal continuous feeding preheating duct 1 and is close to the feed sealing port 5, and the second dust removal port 4 is located in the horizontal The rear section of the continuous feeding preheating duct 1 is close to the feed inlet of the electric arc furnace 2. The horizontal continuous feeding preheating duct between the two dust removal ports forms the first preheating zone I, and the second dust removal port 4 is connect...