Steelmaking converter process

A steel-making converter and process technology, applied in the manufacture of converters, etc., can solve the problems affecting the recovery of converter gas and low calorific value of gas, and achieve the effects of reducing the amount of gas released, protecting the environment and prolonging the time of gas recovery

Inactive Publication Date: 2017-06-30
BENGANG STEEL PLATES
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Problems solved by technology

Due to the process of converter steelmaking, the CO content in the flue gas is low in the early stage of blowing, so the calorific value of the coal gas is low, and the CO in the flue gas 2 and O 2 High content, which affects the recovery of converter gas

Method used

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  • Steelmaking converter process

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Embodiment 1

[0020] The present invention will be further described below in conjunction with embodiment:

[0021] See figure 1 , is a schematic diagram of the process of reusing waste plastics in the converter of the present invention: comprising a spray gun 1, a converter hood 2 and a converter 3, the process of reusing waste plastics in the converter is to utilize the water-cooled spray gun arranged above the converter hood to smelt in the converter During the process, according to the content of CO in the flue gas, medium-pressure gas is used to spray old plastic particles into the fume hood, and the plastic particles burn at high temperature to produce CO. Technical solution: Pre-granulation of waste plastics. Requirements for plastic granules: ≥ 80% of the particle size ≤ 3mm, the material granules are transported to the high-level storage tank of the converter, and the nitrogen pressure in the spray tank is confirmed to be ≥ 0.5 MPa; with the blowing of the converter, The water-coo...

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Abstract

The invention discloses a steel-making converter process, which utilizes the heat and CO generated in the steel-making converter blowing to recycle waste plastics, dynamically adjusts the blowing amount of plastics according to the CO content in the flue gas, and adopts a hollow water-cooled spray gun to carry out the process. The blowing of plastics improves efficiency and protects the environment. The existing production process in iron and steel enterprises is used to make appropriate improvements, waste plastics are consumed, and the energy in waste plastics is fully utilized to improve the efficiency of iron and steel enterprises while protecting the environment.

Description

technical field [0001] The invention relates to a steelmaking converter process. Background technique [0002] The steel-making converter uses molten iron, scrap steel, and ferroalloy as the main raw materials. The steelmaking process is completed in the converter by the physical heat of the molten iron itself and the chemical reaction between the components of the molten iron to generate heat without resorting to external energy. Steel-making converters are divided into acidic and alkaline according to refractory materials, top-blowing, bottom-blowing and side-blowing according to the part where the gas is blown into the furnace; according to the type of gas, it is divided into air converter and oxygen converter. Basic oxygen top-blown and top-bottom compound-blown converters are currently the most commonly used steelmaking equipment due to their fast production speed, large output, high single furnace output, low cost, and low investment. [0003] Converter steelmaking ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/28C21C5/30
CPCC21C5/28C21C5/30
Inventor 曹志众梁雪冬刘彦海
Owner BENGANG STEEL PLATES
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