The pyrolysis and gasification performances of waste textile under carbon dioxide atmosphere

In order to obtain the waste textiles' pyrolysis and the corresponding char' gasification performance and mechanism under CO2 atmosphere, the pyrolysis and gasification tests of different kinds of waste textiles (polyester fiber (PF), cotton and woolen) were conducted in thermogravimetric-Fourier transform infrared spectrometer at atmospheric pressure. Scanning electron microscopy and Raman spectrometry were used to characterize the char structure. The pyrolysis and gasification processes were quantitatively evaluated by kinetic analysis using the shrinking core model. Results indicated that the pyrolysis and gasification characteristic of the three textiles under CO2 atmosphere were different because the kinetic and thermal dynamic of the three textiles in pyrolysis and gasification processes were different. In addition, the apparent pyrolysis activation energies for PF, cotton and woolen were 162.38, 103.05 and 110.02 kJ mol(-1), respectively, while the gasification activation energies were 178.15, 144.49 and 79.37 kJ mol(-1), respectively, which were in good agreement of the Raman tests.