Comparison of non-catalytic and catalytic fast pyrolysis of corncob in a fluidized bed reactor.
Fast pyrolysis of corncob with and without catalyst was investigated in a fluidized bed to determine the effects of pyrolysis parameters (temperature, gas flow rate, static bed height and particle size) and a HZSM-5 zeolite catalyst on the product yields and the qualities of the liquid products. The result showed that the optimal conditions for liquid yield (56.8%) were a pyrolysis temperature of 550 degrees C, gas flow rate of 3.4 L/min, static bed height of 10 cm and particle size of 1.0-2.0mm. The presence of the catalyst increased the yields of non-condensable gas, water and coke, while decreased the liquid and char yields. The elemental analysis showed that more than 25% decrease in oxygen content of the collected liquid in the second condenser with HZSM-5 was observed compared with that without catalyst. The H/C, O/C molar ratios and the higher heating value of the oil fraction in the collected liquid with the catalyst were 1.511, 0.149 and 34.6 MJ/kg, respectively. It was indicated that the collected liquid in the second condenser had high qualities and might be used as transport oil.
Zhang
Huiyan
H
School of Energy and Environment, Southeast University, Nanjing, PR China.
Xiao
Rui
R
Huang
He
H
Xiao
Gang
G
D001674:Bioelectric Energy Sources; D019149:Bioreactors; D002384:Catalysis; D003314:Corn Oil / Q000737:chemistry*; D006358:Hot Temperature; D035261:Plant Components, Aerial / Q000737:chemistry*; D012212:Rheology / Q000379:methods*; D003313:Zea mays / Q000737:chemistry*; D017641:Zeolites / Q000737:chemistry*
D017641:Zeolites; D003314:Corn Oil