| 摘要 |
PURPOSE:To maintain the temp. of discharged coke and that of the inlet of a heat exchanger automatically at predetermined levels, by utilizing operation parameters of a dry coke quencher and processing them properly. CONSTITUTION:An optimum air flow per coke unit is calculated from difference between actually measured and target temps. of discharged coke, difference between actually measured and target temps. at the inlet of a heat exchanger, correction value for required air flow obtained from a prechamber temp., component values of circulating gas and correction value of an inlet temp. of the heat exchanger. Flow of circulating gas is calculated from the above air flow and the amt. of discharged coke and the calculated value is used for control of flow of circulating gas. At the same time, target temps. of discharged coke and heat exchanger inlet are calculated. Proportions of components of gas to be introduced into a circulation system is controlled and a correction value of temp. at the inlet of the heat exchanger is calculated on the basis of actually measured temp. of the heat exchanger inlet, circulating flue gas temp., predetermined proportions of circulating gas components. Recovery and dissipation of gas from the circulating system is controlled on the basis of proportions of circulating gas components.
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