Waste tyre pyrolysis in a conical spouted bed reactor under vacuum conditions

摘要

Pyrolysis of scrap tires has been studied at 425 and 500 ℃ and three pressure levels, atmospheric one 0.5 and 0.25 atm. The experimental runs have been carried out in a pilot plant conical spouted bed reactor provided with a system for continuous feeding of scrap tires. The feeding rate was 3 g/min and the mass fed in each run was 100 g. The main effect of the vacuum over the product distribution is the increase in diesel fraction, which is an interesting result given the increasing trend of fuel demand. Moreover a char of better quality is obtained when the pyrolysis is carried out under vacuum.