Hood wind pressure type anti-escape system for gas injection and its control method

Abstract

The invention discloses a hood-top air pressure type anti-escape system for gas injection and a control method thereof. The anti-escape system includes: an injection hood located on the top of a sintering machine trolley; Inside the cover and above the sintering machine trolley, it is used to spray combustible gas to the sintering material surface of the sintering machine trolley; the gas pipeline is used to transport combustible gas to the injection pipe row; it also includes: air flow device , set on the top of the blowing hood, used to drive the external air to generate airflow and input the generated airflow from the top of the blowing hood downwards into the inside of the blowing hood, so as to form a position above the row of blowing pipes An area of ​​wind pressure where flammable gases cannot pass upwards. The anti-escape system can basically eliminate the phenomenon of gas escape, and helps to inhale the air outside the hood, so as to achieve the purpose of stable, smooth and high-quality production of the sintering production line.

Description

Technical field [0001] The present invention relates to the field of metallurgical technology, and more particularly to anti-flexible systems for preventing blowing gas from the spray blowing system during sintered ore production. The invention also relates to a method for controlling the operation of the anti-escape system. Background technique [0002] The sintering process is a key link in the ironmaking process. It is the principle of all kinds of powdered iron-containing raw materials, an appropriate amount of fuel and flux, adds an appropriate amount of water, which causes material on a sintered device after mixing and blending. A series of physical chemistry changes, sintered into blocks, and sent to blast furnaces to perform the next step. [0003] In order to reduce the coke ratios and smelting costs of blast furnace ironmaking, the requirements of blast furnace on sintered ore are often high intensity and high reductive. In the sintering process, it is generally require...

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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