Research into fine powder and large particle tyre pyrolysis.
This paper investigates the kinetics of the pyrolysis of scrap tyre using thermogravimetry and a small batch laboratory-scale externally heated fixed-bed. Five particle sizes (20-40, 40-60, 60-80, 80-100, 100-200 mesh) and five heating rates (5, 10, 15, 20, 40 K min(-1)) were investigated. The results show that there is no obvious distinction on weight loss for different sizes. With increasing heating rate the weight loss regions shift to a higher temperature range and the weight loss rate increases. The activation energy (E) and pre-exponential factor constant (A) were calculated using the Arrhenius type kinetic model. The heat value of pyrolysis gases is in the range of 12 to 22 MJ Nm(-3). The yields of solid, liquid and gas of pyrolysis scrap tyre and tyre cube at 800 degrees C were investigated, the ratio of pyrolysis production composition of scrap tyre and tyre cube for gas, oil and char is found to be 35 : 23 : 42 and 10 : 31 : 59, respectively.
School of Environmental & Biological Science & Technology, Dalian University of Technology, Key Laboratory of Industrial Ecology and Environmental Engineering, MOE, Dalian, China.
Ningbo
N
Gao
Aimin
A
Li
Wanjing
W
Li
D000393:Air Pollutants / Q000737:chemistry*; D006358:Hot Temperature; D017745:Incineration; D008420:Manufactured Materials; D010316:Particle Size; D011208:Powders; D013818:Thermogravimetry; D013997:Time Factors
D000393:Air Pollutants; D011208:Powders