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Low NOx combustion Principle

Writer: admin Time:2021-04-20 00:00 Browse:

Industrial burner solenoid valve is substantially automatic flow control element, belonging to the actuator; limited to, hydraulic, pneumatic. Generally used for the valve control and industrial machinery, by a solenoid controlled spool position, the air supply is turned on or off to achieve the purpose of changing the direction of fluid flow, thereby controlling the flow of media, in order to achieve control of the switch valve. So low nitrogen burners principle
	Low NOx combustion Principle

Low NOx combustion Principle
Low NOx burners and low NOx burners, refers to fuel combustion during low NOx emissions burner with low NOx burners to reduce emissions of nitrogen oxides during combustion. Nitrogen oxides produced in the combustion process mainly NO and NO2, generally these two oxides of nitrogen known as nitrogen oxides NOx. Experimental results show that the nitrogen oxide emissions of the main combustion apparatus is NO, on average about 95%, while only about 5% NO2. Usually NO fuel combustion generated mainly from two aspects: First, the combustion air (combustion air) oxidation of nitrogen; the second is contained in the fuel during combustion nitride thermal decomposition reoxidation. In most combustion apparatus, the former is the main source of NO, NO will be such as "thermal reaction NO", which is called "fuel NO", in addition to "prompt NO." The formation of NO can react with a nitrogen atom of the NO to NO2 intermediate is reduced during combustion. In fact, in addition to these reactions, NO and NO2 can also generate a variety of nitrogen-containing compound. In the actual device, the combustion reaction reaches chemical equilibrium, [NO2] / [NO] ratio is small, i.e., less NO to NO2 conversion can be ignored. NOx produced by combustion, and the combustion method and the combustion conditions have great influence on the generation of NOx, NOx can thus be reduced by improved combustion technology that through: the use of lower N content fuels, including fuels and denitrification into a low nitrogen fuel; lower excess air ratio, tissue rich combustion to reduce the concentration of oxygen around the fuel; in a low excess air, the peak temperature is lowered to reduce the "thermal reaction NO"; in the case of low oxygen concentration increased fuel stays in the flame reaction zone and before the peak time. Specific method of reducing the formation of NOx emissions and for a normal operation: staged combustion, reburning process, oxygen combustion, flue gas recirculation and combustion shade variations and the like. If you want to learn more knowledge about low nitrogen burners, please consult.