Control Excess Air Ratio in a Reheating Furnace Using Tunable Diode Laser Absorption Spectroscopy Sensor

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Jun-hyung Ryu¹  In-Beum Lee²  YoungIl Kim³ 

[1] Department of Nuclear and Energy System, Dongguk University;Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH);Research Institute of Industrial Science & Technology (RIST)

关键词: Reheating Furnace;    TDLAS;    Excess Air Ratio;    Oxygen Concentration Level;    Feedback Control;   

DOI  :  10.1252/jcej.12we271

来源: Maruzen Company Ltd

【 摘 要 】

References(17)Controlling excess air ratio is a challenging issue in maximizing energy efficiency of a reheating furnace. This paper proposes a new methodology for controlling the excess air ratio using a Tunable Diode Laser Absorption Spectroscopy (TDLAS) sensor while most industries have been using Zr sensor. An oxygen concentration feedback control system using the methodology is also developed and implemented in real reheating furnaces in South Korea. The proposed TDLAS sensor control system turned out to be better than a Zr based one in terms of maintaining the desired performance steadily throughout the entire heating region of the reheating furnace.

【 授权许可】

Unknown