The research background and significance of flameless combustion

The research background and significance of flameless combustion
Flameless combustion is a combustion method where the flame surface is not clearly visible, and it is the simplest and most direct method of judgment.
1、 Research direction.
The main research direction is: pollutant emission control mechanisms (especially nitrogen oxides, CO, CO); Renovation of gas boilers and oil boilers to enhance heat exchange; New combustion methods, such as oxygen combustion technology combined with other combustion methods, or improved ambient temperature air flameless combustion technology; Used for the combustion and gasification of low calorific value fuels (such as lean coal, blast furnace gas, biomass, urban waste, and sludge) and solid fuels (such as coal powder flameless oxygen combustion), improving the combustion chamber can achieve flameless combustion and reduce pollutant emissions.
2、 Research background.
With the widespread application of modern thermal storage technology in industry, some heating devices that burn high calorific value fuels generally operate under high temperature conditions. In conventional flame combustion methods, chemical reactions are concentrated on narrow flame surfaces, resulting in uneven temperature distribution and higher flame front temperatures. This inevitably generates a large amount of NO heat source, which in turn generates CO.
Due to the increasing global attention to environmental issues and the continuous improvement of industrial emission standards, flameless combustion as a new type of low pollution combustion method has received widespread attention.
Domestic and foreign scholars have proposed many new combustion modes, but all of them have some technical defects. For example:
1. The preparation cost of catalytic combustion catalysts is high, and under high temperature conditions, the catalyst has poor stability and short service life;
2. Although rich oil quenching poor oil combustion can achieve ultra-low emissions (less than 20.5mg/m3), current research on it still mainly focuses on gas turbines;
3. Although pure oxygen combustion can achieve near zero NOx emissions, the investment in pure oxygen enrichment in the early stage is very large.
3、 The advantages of flameless combustion.
Compared with other new low pollution combustion methods, flameless combustion technology has the advantages of simple equipment, uniform combustion, stable combustion, high efficiency, low emissions, energy saving, less NOx generation inhibition, and reduced CO content. It has broad application prospects in industry.
Compared to traditional combustion technology, flameless combustion technology expands the range of fuel combustion, stabilizes the combustion process, evenly distributes the temperature in the combustion zone, reduces pollution emissions, and reduces noise.