| 摘要 |
PROBLEM TO BE SOLVED: To improve combustion efficiency of furnace gas in a plug by preventing entry of coal into the plug.SOLUTION: In a coke oven lid 10 of a coke oven for producing coke by carbonizing coal, a plurality of plugs 13 fitted in the oven height direction on the oven inside of a heat insulation box 12 each has inclined planes 14, 15 formed upward on an upper surface part and a lower surface part from the oven inside to the interior direction of the plug 13, and each plug 13 has a clearance with overlapping of the inclined planes 14, 15 of each plug 13 adjacent in the oven height direction.SELECTED DRAWING: Figure 9 |
