Study On The Fuel Properties Of Waste Cooking Oil

Abstract:Millions of tons of waste cooking oil were produced in China every year, some of them became pseudo cooking oil which is dangerous to human health by recycling, and most of them be wasted which cause environment pollution. Used as fuel is an effective way to achieve the resource utilization of waste cooking oil, and solve the hazard caused by waste cooking oil. Same as vegetable oil, waste cooking oil be mainly used for produce biodiesel, when them be used as fuel. Which limited the utilization of waste cooking oil, and caused the lack of systematic study on fuel properties of waste cooking oil. Domestic and international researches indicate that, viscosity of waste cooking oil is too high lead to illiquid and atomizing difficulty. Therefore need a systematic study on the fuel properties of waste cooking oil, and seek a way to minimize the viscosity of waste cooking oil.Four different processed waste cooking oil has been studied on fuel properties, the high calorific value of four different processed waste cooking oil between38177-39989J·g-1, the25℃kinematic viscosity of four different processed waste cooking oil are2-25times of diesel. With the increase of processing, the carbon chain and molecular weight of waste cooking oil is decreased, and that lead to the decrease of kinematic viscosity and flash point. Measure the calorific value of waste cooking oil with Bomb Calorimeter, there are0.1445g water in bomb cannot be measured in average, and that made the high calorific value decrease0.04%, low calorific value increase1.24%.The impact of an additive on waste cooking oil has been studied, which shows that additive can effectively decrease the kinematic viscosity of waste cooking oil, and at the same time it decreased the calorific value and flash point of waste cooking oil. There is heat generated when additive mixed with waste cooking oil, and that will decrease calorific value of the mixture, the heat of solution is0.11-1.92%of low calorific value.According to the composition of edible oils and waste cooking oil, obtained two experiential arithmetic to calculate the carbon hydrogen oxygen mass fraction of waste edible oil through dry ingredients high calorific value. According to result of component analysis and high calorific value of B waste cooking oil, verified the two experiential arithmetic, results show that error of two experiential algorithms are both in the allowable range. The error of carbon atoms method is less than0.83%, error of unsaturation method is less than0.83%. Figure13, Table21, Reference57.