System for automatic monitoring clogging of metallurgy high furnace coal fines lance

Abstract

the invention discloses a self-monitoring system of blocked metallurgical high-furnace coal powder, which comprises the following parts: distributor 1, coal spraying hand ball valve 2 or 21, coal spraying aerating ball valve 3 or 31, blowing aerating ball valve 5 or 51, blowing hand ball valve 6 or 61, blowing compressing air ring-shaped pipe 11 and blowing pressure detecting device 10, main coal transmitting pipe 17, coal spraying branch pipe 16 or 16' and computer 18 or PLC cabinet. when the coal powder is blown in the high-furnace vent, which blowing aerating ball valve 5 or 51 is closed and the coal spraying aerating ball valve 3 or 31 is opened; when the coal spraying branch pipe 16 or 16' is blocked, the coal spraying aerating ball valve 3 or 31 is closed for a while and the blowing aerating ball valve 5 or 51 is opened to remove the blocked coal powder in the 16 or 16'; the screen of computer 18 displays each opening and closing condition of each ball valve, which can monitor each spraying gun condition remotely.

Description

technical field [0001] The invention relates to an automatic monitoring system for blockage of pulverized coal spray guns in large-scale metallurgical blast furnaces, belonging to C21B3 / 00 or G05G21 / 00. Background technique [0002] In order to reduce the coke ratio of metallurgical blast furnace ironmaking and improve other technical and economic indicators, the process of injecting pulverized coal into the blast furnace during the blast furnace smelting process and the use of corresponding injection equipment are important means of reducing the cost of ironmaking for blast furnaces at home and abroad. However, during the process of injecting coal powder into the blast furnace, the coal powder spray gun is easily blocked, which is one of the most common problems in the coal injection operation. If it is not dealt with in time, it will seriously restrict the improvement of the coal injection level and affect the uniformity of each tuyere injection properties, and have a grea...

AI Technical Summary

Problems solved by technology

The biggest advantage of this method is that the response is fast, but the disadvantage is that this device must use a large cover plate for the viewing hole, and the peeping device is easily affected by the blockage of the peeping device

However, the sight hole devices designed for my country's metallurgical blast furnaces are usually small, and at the same time, this set of detectors needs to arrange multiple cables behind the tuyere peeking device. Difficult to apply under existing conditions

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