A method and device for feeding gas into submerged arc furnace to reduce energy consumption

A submerged arc furnace and gas technology, applied in the field of metallurgy, can solve the problem of low utilization rate of submerged arc furnace flue gas, and achieve the effect of reducing power consumption

Active Publication Date: 2020-08-25
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for feeding gas into the submerged arc furnace to reduce energy consumption, so as to solve the problem of low utilization rate of the submerged arc furnace flue gas mentioned in the above-mentioned background technology and reduce the energy consumption of the submerged arc furnace. reduce environmental pollution

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  • A method and device for feeding gas into submerged arc furnace to reduce energy consumption
  • A method and device for feeding gas into submerged arc furnace to reduce energy consumption
  • A method and device for feeding gas into submerged arc furnace to reduce energy consumption

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Embodiment Construction

[0032] Further explanation in conjunction with accompanying drawings:

[0033] Such as figure 1 As shown, the main process flow is that the flue gas from the submerged arc furnace 1 first enters the flue gas treatment system 2 for dust removal. The flue gas treatment system 2 is mainly a bag filter, and then the flue gas from the submerged arc furnace after dust removal enters the In the gas buffer device 3, the external air is passed into the gas buffer device 3 through the gas supply device 5, and the submerged arc furnace flue gas in the gas buffer device 3 is mixed with the external gas and then enters the submerged arc furnace through the submerged arc furnace air inlet device 4 Reaction in the submerged arc furnace, as gas supplement, at the same time, the external gas directly enters the submerged arc furnace through the gas supply device 7 and the submerged arc furnace air intake device 4 for reaction.

[0034] Such as figure 2 As shown, the air inlet device of the...

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Abstract

The invention belongs to the technical field of metallurgy, and particularly relates to a device for reducing energy consumption introducing gas into a submerged arc furnace. The device comprises a gas buffering device, a gas supply device, a submerged arc furnace air inlet device and a flue gas treatment system. Through the specific setting of the components and the devices, waste flue gas generated by a submerged arc furnace is fully utilized, and treated flue gas is re-introduced into the submerged arc furnace, so that the energy of the flue gas of the submerged arc furnace is reasonably utilized.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a method and a device for feeding gas into a submerged arc furnace to reduce energy consumption. Background technique [0002] In recent decades, the steel industry has developed rapidly, and the demand for ferroalloys has also increased day by day. In the production process of ferroalloys, continuously reducing smelting power consumption and improving the use efficiency of by-products has become an important way to effectively reduce the production cost of ferroalloys. [0003] In the production of silicon-based, manganese-based, chromium-based and other ferroalloy products, carbonaceous reducing agents are generally used. During the smelting process in submerged arc furnaces, a large amount of CO, CO 2 、H 2 For flue gas with equal composition, the flue gas temperature at the furnace mouth is generally 270-550°C, which contains a lot of sensible heat. Among the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F27D17/00
CPCF27D17/004Y02P10/25
Inventor 王海娟李家俊郜俊
Owner UNIV OF SCI & TECH BEIJING
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