Development and research of low pressure injection burner for biogas combustion

3rd International Scientific and Technical Conference “Energy Systems”

Suslov, D.Y.^1 ; Ramazanov, R.S.^1 ; Temnikov, D.O.^1 ; Lobanov, I.V.^1

Department of Heat Supply and Ventilation, Belgorod State Technological University of V.G. Shukhov, Kostyukov St.46, Belgorod

308012, Russia^1

关键词: Adverse effect;    Air mixing process;    Alternative energy source;    Combustion pro-cess;    Cross-section area;    Experimental test;    Flame propagation velocity;    Methane concentrations;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/552/1/012031/pdf
DOI  :  10.1088/1757-899X/552/1/012031

来源: IOP

【 摘 要 】

The article is dedicated to the problem of using an alternative energy source-biogas in gas supply systems. A low pressure injection burner with a conical shaped heat diffuser has been designed. A diffuser placed in the burner body provides preheating of the gas-Air mixture and allows to increase a flame propagation velocity. A computer simulation of the gas-Air mixing process in a body has been made for 3 types of burners: without a diffuser, with a diffuser of 11 mm and 25.5 mm long. As follows from the simulation, 11mm diffuser has no adverse effect on the gas-Air mixing process. While an increasing length of the diffuser up to 25.5mm leads to the decreasing cross-section area of a mixing chamber, therefore increasing air-gas mixture rate and methane concentration in the flame holes. Experimental tests have been performed in relation to biogas combustion process for those 3 types of burners. Experimental results proved that placement of 11mm diffuser in a burner body reduces the time for heating water in the tank up to 100°C by 6% (45.41 s). 25.5 mm diffuser reduces the heating time by 1.5% more (11.37 s). Thus, we can make a conclusion that the presence of a diffuser in the burner body increases a flame propagation velocity and a heat rate of the burner.