We measured coal gas pressure and oven chamber wall displacement during carbonization on commercial coke oven. Those are thought to be factors of influence on coke cake extrusion behavior. The main findings summarized below.
(1)Gas pressure at coal charging wasn’t influenced by coal blend (internal gas pressure at coal thermoplastic). On the other hand, internal gas pressure at 500mm height from oven sole was 1.5kPa at base coal blend, was 20kPa at high gas pressure coal blend.
(2)Wall displacement at coal charge was about 1mm, wall displacement restored to the initial position with the progress of carbonization.
(3)Wall displacement at coal charge of high internal gas pressure coal blend didn’t restore monotonically. It is thought that restore of wall displacement was suppressed by gas pressure of plastic layer close to oven wall, restore of wall displacement started after 3-4hours from charging coal.
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