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About RychenFocus on high-tech research and development, energy-saving product design and production in the fields of fluid transportation (water pump, fan), fine control combustion, high-efficiency heat exchange and high-efficiency permanent magnet motor, and provide professional technical transformation services to provide users with professional comprehensive energy-saving solutions.
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SolutionFocus on high-tech research and development, energy-saving product design and production in the fields of fluid transportation (water pump, fan), fine control combustion, high-efficiency heat exchange and high-efficiency permanent magnet motor, and provide professional technical transformation services to provide users with professional comprehensive energy-saving solutions.
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ProductsFocus on high-tech research and development, energy-saving product design and production in the fields of fluid transportation (water pump, fan), fine control combustion, high-efficiency heat exchange and high-efficiency permanent magnet motor, and provide professional technical transformation services to provide users with professional comprehensive energy-saving solutions.
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BlogWe focus on high-tech research and development, energy-saving product design and production in the fields of fluid transportation (water pump, fan), fine control combustion, high-efficiency heat exchange and high-efficiency permanent magnet motor, and provide professional technical transformation services to provide users with professional comprehensive energy-saving solutions.
Advanced Combustion and Its Control Technology
Lean premixed combustion technology
Traditional nitrogen reduction measures only spray water or steam to reduce the flame temperature, but the effect of nitrogen reduction is very limited [1,2]. The combustion science and the formation mechanism of nitrogen oxides have been studied in depth, and the lean premixed combustion is the first modern dry NOx combustion organization technology based on the formation mechanism of nitrogen oxides. The technology was first applied to aero engines, the highest level of combustion organization technology in the industry, and then applied to large ground gas turbines, including ship-powered gas turbines, through the development of aviation-to-combustion.
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Axial Fuel Staged Combustion Technology
With the further increase of the outlet temperature of the combustion chamber, the regular lean premixed combustion technology cannot meet the standard requirements for further reduction of NOx.
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Axial Air Staged Combustion Technology
At present, synthesis gas will become one of the widely used energy sources in the future. Among them, synthesis gas with high hydrogen content is easy to cause backfire of burners due to the very high combustion speed of flame surface [1,2]. Therefore, most of these burners generally adopt the form of diffusion combustion, which makes the nitrogen oxide emission of burners with this kind of fuel higher. In order to meet the environmental requirements, it is necessary to develop a new combustion organization technology. Rich-Rapid Mixing-Lean Burn (RQL) is a technology developed to address the flashback problem and the nitrogen oxide emission problem.
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Micro-mixing (Micromixer) combustion technology
Micro-mixing burner (Micromixer Burner, MM) is a kind of fuel and oxidant in micro-scale after mixing combustion organization technology. The mixing space of a typical micro-mixing burner is composed of a micro-scale straight tube, which is enclosed by a front panel and a rear panel, as shown in Figure 1 [1]. Since air and fuel are mixed on a very small scale, a high degree of mixing can be achieved, reducing NOx emissions. Due to the quenching effect of small tube diameter, the micro-mixed reactor has high anti-flashback performance, especially suitable for hydrogen and other active fuels [2]. Figure 2 and Figure 3 are the structural diagrams of the actual application of the micro-mixing combustion chamber.
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Low-spin combustion technology
Low Swirl Burner (LSB) is a very promising combustion organization technology to reduce NOx emissions.
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Soft (flameless) combustion technology
Soft combustion is also called flameless combustion. The main feature is that there is no flame surface, that is, the chemical reaction occurs in the entire combustion chamber area, the combustion is more uniform, the temperature gradient is small, and there is no local high temperature zone, so NOx emissions are even more than axial classification. One order of magnitude lower [1]. Kruse et al. [2] The relationship between NOx and CO emissions and equivalent ratio in soft combustion was studied, as shown in Figure 1.
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