| 摘要 |
PURPOSE:To surely detect a tendency toward increase or decrease of oven temp. and to prevent failure of carbonization, by controlling the oven temp. by using a value estimated on the part data when deviation between a set value and a measured value exceeds a predetermined value. CONSTITUTION:The output of a temp. sensor 10 provided at the top of the combustion chamber of a coke oven is subjected to digital conversion by an A/D converter 11 and averaged by an interval leveler 12, and then inputted to an oven temp. setting means 13b and a data buffer 14. When deviation between a set value and a measured value of the oven temp. exceeds a predetermined limit, a gas flow rate is decided by a gas fraction amt. calculator 17 using a forecast oven temp. in future estimated by using data of the past oven temp. by switching a switch 16, to control a gas flow controller 18. When said deviation is below the limit, the gas flow rate is calculated by using a practically measured oven temp. and the coke oven temp. is controlled by controlling the gas flow controller 18.
|
