Energy-saving and emission-reducing hydrogen gas classified injection method for sintering

A gas classification, energy saving and emission reduction technology, applied in the field of iron and steel metallurgy, can solve the problems of deterioration of sinter reducibility, low sinter strength, short residence time, etc., and achieve the goal of improving heat utilization efficiency, drum strength and quality Effect
CN110564952AActive Publication Date: 2019-12-13CENT SOUTH UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CENT SOUTH UNIV
Publication Date
2019-12-13

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Abstract

The invention discloses an energy-saving and emission-reducing hydrogen gas classified injection method for sintering. According to the inherent heat distribution difference of a sintering material layer, the material layer is divided into a high heat supplementing area (1250 DEG C), a medium heat supplementing area (1250-1300 DEG C) and a low heat supplementing area (1300 DEG C). According to thedifference of heat requirements in different areas of the sintering material layer, gas fuel is supplemented, uniform-heating homogeneous sintering can be easily realized, the sinter yield and quality index are greatly increased, the consumption of clean gas fuel for replacing solid fuel is reduced, the fuel utilization rate is increased, the emission amount of COx, SOx and NOx is reduced, the application and popularization prospects are broad, and the green development of the iron and steel industry is facilitated.
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Description

technical field

[0001] The invention relates to a gas injection technology, in particular to a sintering energy-saving and emission-reducing hydrogen-based gas staged injection technology, which belongs to the sintering field in the iron and steel metallurgy field. Background technique

[0002] The iron and steel industry is a typical energy-intensive sector, and its energy consumption is as high as 10% to 15% of the world's energy consumption. Sintering is the front-end process of the iron and steel industry, and the energy consumption of the process ranks second in the iron and steel industry. The combustion of solid fuel during the sintering process is also an air pollutant NO in the iron and steel industry. X , CO X The main source of emissions, SO X important source of emissions. In addition, sinter accounts for more than 70% of the blast furnace ironmaking charge, and the quality of sinter is closely related to the stability, high efficiency, low consumption and lar...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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