Characterization of Waste Tire Pyrolysis Products by GC, ICP-MS, TGA and DSC

Abstract

The huge amount of waste tires (WTs) have been disposed to surroundings which cause dangerous effect on nature. Owing to recycled WTs, the pyrolysis is a good technique to dismiss harmful effect of the WTs, by converting into gas, liquid and solid. The present study has two steps of liquefaction at a batch reactor. Firstly, conversion of the WTs into gas, waste tire oil (WTO) and char. Then the WTO were blended with calcium oxide (CaO) or natural zeolite (NZ) at different ratio and pyrolyzed to obtain high quality oil, similar to gasoline fuel (GF) or diesel fuel (DF). The distillation curve is a good key to define fuel quaility. Thus, 10% CaO-WTO blend curve near to the DF. Unfortunately, the mixture was distillated at 54 o C, lower than the DF. Therefore, the blend was separated into two fractions due to intial-final boiling points as 150 o C to 360 o C, named as Diesel like fuel (DLF); between 54 o C to 150 o C, called as gasoline like fuel (GLF). Finally, samples were analyzed to characterizate by GC, ICP-MS, TGA and DSC for similarities of conventional fuels. The heavy metals and other elements of samples were analyzed by ICP-MS techniques. TGA is a good test to determine the oxidative and thermal stabilities of fuel while DSC was used to determine crystallization onset temperature on fuel samples. GC analysis is done for detemening of gas heating value and beside gas contents which has a comprehensive with standard burnable gas. Based on GLF and DLF with unliquified gas results, all of components of products can be burned in engine without any problem.