Thermoluminescence spectroscopic analysis of fuel mixed cooking oil using hyperspectral analysis

Abstract

The analysis of combustion for any liquid mixed fuel using oil burner inside and outside industrial boiler became complicated. Also, studying emissions of thermoluminescence inside flame using physical probes is dangerous and not accurate. In the present research, the used fuels mixed conventional/light diesel oil (LDO) (20% WCO + 80% LDO by mass) called B1 and (20% WCO + 80% HDO by mass) called B2; where HDO and WCO are abbreviation of heavy diesel oil and waste cooking oil fuel, respectively. The aim of this research is to make comparative study between combustion characteristics using hyperspectral camera compared with conventional method like thermocouple and gas analyzer at exhaust using LDO, 20% WCO + 80% LDO (B1) and 20% WCO + 80% HDO (B2) using twin siphon nozzle in industrial burner at water-cooled jacket boiler. The analysis showed that good great agreement in measuring CO emissions (ppm/kW) and C2 (a.u.) radicals outside and inside the flame. On the other, the CH radicals and CxHy are supplementary to each other. In other words, CH radicals indicate reaction between hydrocarbons inside reaction zone of flame but CxHy is indication for chemical composition of fuel and indicator to quality of atomization. By applying Wien’s law, inflame thermal contours are drawn. The results showed that the highest thermal inflame temperature is 1800 °C could be achieved at combustion of LDO and B2 at Φ = 1.1 and 0.96, respectively.