Analysis of operating limits and combustion state regulation for low-calorific value gases in industrial burners. (5th January 2022)

• Record Type: Journal Article
• Authors: Zhang, Long; Li, Shan; Yao, Min; Zhou, Hua; Ren, Zhuyin
• Is Part Of: International journal of hydrogen energy. Volume 47:Number 2(2022)
• Page Start: 1306
• Page End: 1318
• Publication Date: 2022-01-05
• Subjects: Low-calorific value gas -- Perfectly stirred reactor -- Arc-length continuation -- Combustion state regulation -- Active subspace; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2021.10.052
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: The effective and efficient utilization of low-calorific value (LCV) gases has gained increasing attention in scientific research and industrial fields. In this study, the combustion characteristics of three LCV gases in practical devices are analyzed by using a nonadiabatic perfectly stirred reactor model. The complete steady-state solution in the temperature-residence time parameter space is obtained with arc-length continuation. The stable operation region is quantified by the eigenvalue analysis. The transition of solution curves is quantified with heat loss coefficient. Five key system parameters are systematically investigated on their effects on stability limits. With the combustion performance being quantified by a combustion state index, a combustion state regulation method is proposed to find the optimal regulation path of system parameters. Active subspace method is further applied to shorten the regulation step by identifying the active direction. The proposed method and findings are useful for optimal regulation of burning LCV gases in industrial burners. Highlights: Combustion characteristics of low-calorific gases are analyzed with PSR model. Complete steady-state solution is obtained with arc-length continuation. Combustion performance is quantified by a combustion state index. Combustion state regulation method is proposed to find the optimal regulation path. Active subspace method is applied to shorten the regulation step.