Method and device for controlling furnace temperature of burning heating furnace

US9383745B2 · kind B2 · utility

Assignee

• BAOSHAN IRON & STEEL CO., LTD. · CN

Inventors

• Yongfeng Liu · Beijing, CN
• Guoqiang Qian · Wheeling, US
• Huazhong Gu · Shanghai, CN
• Rong Chen · Chengdu, CN
• Zhicheng Wang · San Diego, US
• Chunguo Lv · Shanghai, CN
• Dejian Wen · Shanghai, CN
• Peili Zhang · Shanghai, CN

Key dates

• Filing date: Apr 27, 2011
• Grant date: Jul 5, 2016
• Expiry date: Mar 20, 2033

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F27D2019/0003
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

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 DV1, 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 DV2; 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 FFV in accordance with the speed V of the machine set (V); obtaining a second multiple feed forward output components FFT in accordance with the differences between the furnace temperature setting values and the furnace temperature feedback values, i.e., the discrepancy values DV1; looking up a PID control parameter in accordance with the discrepancy values DV1 and DV2, based on fuzzy contro…