Research progress on flameless combustion technology at home and abroad

Research progress on flameless combustion technology at home and abroad
1、 Research progress abroad.
Organizations such as Japan's high-temperature air combustion technology, Germany's flameless oxidation, Italy's mild combustion, the University of Tokyo, the University of Maryland, the Royal Swedish Institute of Engineering, the University of Stuttgart, and the Dutch International Flame Research Association (IFRF) have studied this technology and developed their respective technical characteristics, such as Japan's high-temperature air combustion and Germany's flameless oxidation combustion technology, Italy's moderate and enhanced low oxygen dilution combustion technology The low nitrogen oxide injection combustion technology in the United States has been widely valued and applied in energy, chemical, metallurgical and other fields after 30 years of development, demonstrating huge energy-saving and environmental protection advantages.
2、 Domestic research progress.
Since the 1990s, some scientific research institutions such as Huazhong University of Science and Technology, Beijing University of Science and Technology, Tsinghua University, Central South University, and Beijing Shenwu Thermal Energy Technology Co., Ltd. have been committed to the research of flameless combustion technology and tracking the application research of high-temperature air combustion technology.
Scholars propose:
① Combine flameless combustion with other efficient and low pollution combustion methods.
② Improve the conditions for flameless combustion and develop flameless combustion technology with a wider range of applications and simpler methods.
Combining flameless combustion technology with oxygen combustion technology can further reduce energy consumption and lower NOX emissions. For example, Tang Chaojun proposed flameless oxygen combustion technology, which uses pure oxygen to replace part or all of the combustion air, combined with a new combustion technology of flue gas circulation; Xing Xianjun and others from the University of Science and Technology of China combined fuel and air staged combustion technology to feed a honeycomb porous outlet structure burner into secondary fuel, achieving flameless combustion of room temperature air.
In China, most research focuses on using tail gas to preheat air to achieve high-temperature and flameless combustion. For example, Qi Zhao and others from the University of Science and Technology of China developed a room temperature air flameless combustion technology based on the basic idea of superflame combustion, which does not require heating of air.