Blowing cover fuel gas escape-preventing system and control method thereof

Abstract

The invention discloses a blowing cover fuel gas escape-preventing system and a control method thereof. The blowing cover fuel gas escape-preventing system comprises a blowing cover, a blowing pipe row and a gas pipeline and is characterized by further comprising an airflow device, wherein the blowing cover is positioned at the top of a sintering machine trolley; the blowing pipe row is arranged in the blowing cover, is positioned above the sintering machine trolley and is used for blowing combustible gas to the sintering material surface of the sintering machine trolley; the gas pipeline is used for conveying combustible gas to the blowing pipe row; the airflow device comprises a driving air cylinder and a rotary impeller device; and the rotary impeller device is arranged at the top of the blowing cover and is used for driving external air to generate airflow and conveying the generated airflow into the blowing cover downwards from the top of the blowing cover to form a wind pressurebelt area above the blowing pipe row, and combustible gas cannot penetrate through the wind pressure belt area upwards. The blowing cover fuel gas escape-preventing system can basically eliminates thefuel gas escaping phenomenon and can inhale the air out of the cover to further realize the purpose that a sintering production line produces stably, smoothly and excellently.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to an anti-escape system used to prevent injected gas from leaking from an injection hood during the production process of sintered ore. The invention also relates to a method for controlling the operation of said escape prevention system. Background technique [0002] The sintering process is a key link in the ironmaking process. Its principle is to mix various powdery iron-containing raw materials with an appropriate amount of fuel and flux, add an appropriate amount of water, mix and pelletize the material on the sintering equipment to make the material A series of physical and chemical changes, sintered into blocks, which are sent to the blast furnace for the next step. [0003] In order to reduce the coke ratio and smelting cost of blast furnace ironmaking, blast furnaces often require high strength and high reducibility for sinter. In the sintering process, the sintered o...

AI Technical Summary

Problems solved by technology

[0007] On the other hand, it is more difficult to inhale the air in the hood

Due to the static airfoil anti-escape plate seal, most of the area of ​​the material surface is covered by the airfoil, so that the negative pressure on the material surface is greatly limited in the attraction of the air outside the hood, and it is difficult for the air outside the hood to be sucked into the hood Into the material layer, which has a negative impact on the sintering effect

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