| 摘要 |
PURPOSE:To enable to obtain stably a necessary loading calorific value always, by controlling supplying fuel gas so that the predetermined loading calorific value can be obtained based on an estimated calorific value of the fuel gas. CONSTITUTION:Estimated operation is carried out by supplying calorific values QB, QC of BFG and COG to be detected always by calorie meters 32, 33 in a coke furnace to a mean estimated arithmetic unit 38. The estimated calorific values QB, QC of BFG and COG at fresh gas flow changeover time intervals to be obtained through this operation are supplied respectively to an arithmetic unit 39 whose flow ratio is gamma and supply flow of mixed gas is VM synchronously with a timing signal of every gas flow changeover time interval T from a controller 29. Simultaneously with supply of a calorific value QM of mixed gas established by a setting device 3 of a calorific value of the mixed gas a loading calorific value E established by a loading calorific value setting device 40 is supplied also to the arithmetic unit 39 for operation of the flow VM. Simultanously with the above matter, the flow ratio gamma at the fresh gas flow changeover time interval is operated sunchronously with the timing signal of every gas flow changeover time interval T from the controller 29. |
