Thermo-chemical conversion of scrap tire waste to produce gasoline fuel

Release Time:2025-04-30  Hits:

• Date:2025-04-30
• Title of Paper:Thermo-chemical conversion of scrap tire waste to produce gasoline fuel
• Journal:Waste Management, 2019, 86:1-12.
• Summary:Catalytic hydropyrolysis (HyPy) of scrap tire (ST) was investigated for the production of gasoline-like fuel, one of the most promising candidates for substituting increasingly depleted fossil fuels. The effects of HyPy process variables such as catalyst type (AC, Ir/C, Rh/C, Pt/C, Ru/C, and Pd/C), temperature (200-450 °C), time (30-120 min), catalyst loading (0-40 wt.%), and hydrogen pressure (1 atm-12 MPa) on the HyPy product distribution and properties of the hydropyrolysis oil (HPO) were examined. Ru/C was identified as the most suitable catalyst in terms of HPO quality, and the catalytic effect predominantly derived from the noble metal. Temperature was the most influential factor affecting the yield and quality of the HPO, followed by catalyst loading, H2 pressure, and time in order of decreasing influence. Increases in temperature, time, and catalyst loading decreased the yield of HPO and increased the yield of gaseous product, whereas contrary results were observed with increasing H2 pressure. The lowest N, O, and S contents of 0.02, 0.41 and 0.41 wt.% of HPO were achieved at 430 C, 60 min, 10 wt.% Ru/C, and 12 MPa H2. The higher-heating-value of the HPOs varied between 44 and 46 MJ/kg depending on the reaction conditions. More than half of the energy of the ST was converted to the HPO. The HPO mainly consisted of saturated and unsaturated hydrocarbons of one to five benzene derivatives. The distillate fraction between 35 and 250 C of the HPO is greater than 80 wt.%. The performance index of the HPO is very similar to commercially available diesel. Thus, we believe that catalytic HyPy is a highly effective method for producing high-quality hydro-carbon fuel from scrap tires.
• Co-author:Kai Wang, Yuping Xu, Peigao Duan*, Feng Wang, Zhi-Xiang Xu*
• Volume:86
• Page Number:1-12
• Translation or Not:No
• Date of Publication:2019-01-16