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1. 发明公开

EP2634272A4 METHOD AND DEVICE FOR CONTROLLING FURNACE PRESSURE OF CONTINUOUS ANNEALING FURNACE 有权
标题翻译：方法和设备控制压力;连续退火炉
公开(公告)号：EP2634272A4
公开(公告)日：2017-04-19
申请号：EP11835487
申请日：2011-04-14
申请人： BAOSHAN IRON & STEEL
发明人： LIU YONGFENG , GU HUAZHONG , QIAN GUOQIANG , YIN BIN , WEN DEJIAN , HEI HONGXU , ZHANG JUN , HU DEYANG
IPC分类号： C21D9/00 , C21D1/26
CPC分类号： G05D16/20 , C21D1/74 , C21D9/561 , C21D11/00 , F27D19/00 , F27D21/00 , F27D2019/0031
摘要： A method for controlling furnace pressure of a continuous annealing furnace is disclosed. The method comprises detecting a coal gas flow volume and an air flow volume in each section by use of a coal gas flow volume detector and an air flow volume detector disposed in each section of a continuous annealing furnace, respectively, adding up the coal gas flow volume detected in each section to obtain a total input coal gas flow volume; adding up the air flow volume detected in each section to obtain a total input air flow volume, and calculating a pre-combustion gas pressure in the furnace based on the total input coal gas flow volume and the total input air flow volume; detecting compositions of the coal gas and a ratio of the coal gas to the air by use of a composition detector; detecting a pre-combustion gas temperature in the furnace by use of a thermocouple; predicting post-combustion gas compositions and a total gas volume based on chemical combustion reaction equations and based on the total input coal gas flow volume, the total input air flow volume, the coal gas compositions and the ratio of the coal gas to the air; igniting the coal gas and the air in the furnace; and detecting a post-combustion gas temperature in the furnace by use of a thermocouple; calculating a post-combustion gas pressure in the furnace based on the pre-combustion gas pressure in the furnace, pre-combustion gas temperature in the furnace and the post-combustion gas temperature in the furnace; and calculating an opening degree for an exhaust gas fan based on the pre-combustion gas pressure in the furnace and the post-combustion gas pressure in the furnace and by use of a gas increment pass algorithm, and using the opening degree to control the exhaust gas fan.

2. 发明公开

EP2634519A4 METHOD AND DEVICE FOR CONTROLLING FURNACE TEMPERATURE OF BURNING HEATING FURNACE 有权
公开(公告)号：EP2634519A4
公开(公告)日：2018-01-03
申请号：EP11835496
申请日：2011-04-27
申请人： BAOSHAN IRON & STEEL
发明人： LIU YONGFENG , QIAN GUOQIANG , GU HUAZHONG , CHEN RONG , WANG ZHICHENG , LV CHUNGUO , WEN DEJIAN , ZHANG PEILI
IPC分类号： F27D19/00 , C21D11/00 , F23N1/02 , G05D7/00
CPC分类号： G05B23/0235 , C21D1/34 , C21D11/00 , F23N1/022 , F23N2005/181 , F23N2005/185 , F23N2023/14 , F23N2023/34 , F23N2023/36 , F23N2023/52 , F23N2025/14 , F23N2025/16 , F27D19/00 , F27D21/00 , F27D21/0014 , F27D2019/0003 , G05B11/42 , G05B13/0265 , G05D23/19 , G05D23/1919
摘要： A method for controlling furnace temperature of a fired heating furnace is disclosed, comprising: measuring furnace temperatures to obtain furnace temperature feedback values; calculating the differences between furnace temperature setting values and the furnace temperature feedback values as discrepancy values DV 1 , in accordance with the furnace temperature feedback values and the furnace temperature setting value; calculating the differences between the furnace temperature setting values and the furnace temperature feedback values in a unit time, i.e., the gradient of furnace temperature change values, as discrepancy values DV 2 ; obtaining a speed V of a fired heater machine set from a speed adjuster of the fired heater machine set, and obtaining a first multiple feed forward output components FF V in accordance with the speed V of the machine set (V); obtaining a second multiple feed forward output components FF T in accordance with the differences between the furnace temperature setting values and the furnace temperature feedback values, i.e., the discrepancy values DV 1 ; looking up a PID control parameter in accordance with the discrepancy values DV 1 and DV 2 , based on fuzzy control rule, and creating an adjusting control parameter OP 1 in accordance with the PID control parameter; controlling a valve for regulating coal gas flow and a valve for regulating air flow by combining the adjusting control parameter OP 1 with the first multiple feed forward components FF V and the second multiple feed forward components FF T as a final control output value.

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