Evaluation of waste pyrolysis characteristics in a pressurized fluidized bed reactor.
To obtain the distribution of fuel components to gas, tar and char in a pressurized fluidized bed waste pyrolyzer, experiments were conducted with a laboratory scale fluidized bed reactor. Waste samples were fed batchwise from the top of the reactor into the fluidized bed of silica sand and pyrolyzed by nitrogen/nitrogen-O2 gas and the effects of pressure, particle size, heating rate and oxygen addition were investigated. In the case of rubber, the char yield tended to increase a little and the tar yield decrease over the pressure of 304-709 kPa. In comparison with the thermogravimetry data it was clearly demonstrated that the char yield from fluidized bed pyrolysis is much lower. A small amount of oxygen addition decreased both tar and char yields but its further increase did not affect them very much.
Ono
A
A
Tokyo University of Agriculture and Technology Graduate School BASE, Koganei, Tokyo 184-8588, Japan.
Kurita
M
M
Nagashima
T
T
Horio
M
M
D000397:Air Pollution / Q000517:prevention & control; D005740:Gases / Q000737:chemistry; D006358:Hot Temperature; D008855:Microscopy, Electron, Scanning; D009584:Nitrogen / Q000737:chemistry; D010100:Oxygen / Q000737:chemistry; D010316:Particle Size; D011312:Pressure; D012408:Rubber / Q000737:chemistry; D012822:Silicon Dioxide; D013818:Thermogravimetry; D018505:Waste Management / Q000295:instrumentation* / Q000379:methods
D005740:Gases; D012822:Silicon Dioxide; D012408:Rubber; D009584:Nitrogen; D010100:Oxygen