Coke oven chute \"white eye\"”
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This post was last edited by wangshaobo on 2023-10-28 21:01. What is the phenomenon of \"white eyes\" at the inclined opening in the vertical flue of the coke oven combustion chamber, and what causes it? How to handle it?
"\"White eye\" refers to the bright flames that appear at the tuyere opening inside an iron smelting blast furnace; these flames are usually white, which is why steelworkers call them \"white eye\". "The \"white eye\" phenomenon may affect the stable operation and production efficiency of blast furnaces. "The main possible causes of \"rolling eyes\" are as follows: 1. Sudden changes in the pressure inside the blast furnace. 2. The flow of gas inside the blast furnace is unstable. 3. The material column condition is unreasonable; for example, the thickness of the filled material layer and the proportion of oxygen-enriched coal are not appropriate. 4. The presence of explosive or rapidly flammable fuel gases (such as carbon dioxide, carbon monoxide) can lead to ignition due to the mixing of air or oxygen-enriched air with partially unburned reducing gases. The methods for dealing with \"white eyes\" are as follows: 1. Adjust the composition of the blast furnace charge to ensure an appropriate layer thickness and a proper ratio of oxygen-enriched coal, thereby preventing gas leakage and excessive production of carbon dioxide. 2. Control the internal pressure of the ironmaking blast furnace to prevent leaks and ensure complete gas combustion, avoiding excess carbon monoxide. 3. Shut down the ironmaking blast furnace and cease operations until the “white eye” phenomenon disappears, after which it can be restarted. The appropriate approach should be chosen based on the specific circumstances. This requires professional knowledge and extensive practical experience. .
The question concerns issues with coke ovens, not blast furnaces.