Pyrolysis of Cotton Stalk by Microwave Irradiation
A novel pyrolysis method was employed for pyrolyzing cotton stalk powder samples and the corresponding sodium carbonate treated ones to obtaining acetol rich bio-oil.The powder sample was mixed with silicon carbide which acted as microwave absorber in a quartz reactor and the reactor was then put into a 2450MHz microwave oven for pyrolyzing at ca. 470℃ for 12min.The mass ratio of silicon carbide to sample was 5:3.In contrast,the same samples were pyrolyzed in a Curie-point pyrolyser coupled to GC-MS.Analysis of both volatile products indicates that microwave pyrolysis Ied to a novel distribution of the organic products in the condensed volatiles.Specifically,more light components appeared in the volatile from microwave pyrolysis,in which acetol was a dominant component.Sodium carbonate made acetol more abundant with a concentration up to 50％ in terms of integration of the 25 main organic compounds in the condensed volatile.In contrast,the instant analysis of volatile from the Curie-point pyrolyser proved to be a composition of wider distilbution and none was extraordinary abundant.Moreover,sodium carbonate inhibited the acetol formation in this case. A potential application of acetol was proposed and the critical problems related to realizing this application were discussed.
pyrolysis biomass cotton stalk microwave bio-oil acetol
WANG Jun CHEN Mingqiang CHEN Minggong WANG Fengchan MIN Fanfei ZHANG Mingxu
Department of Chemical Engineering,Anhui University of Science and Technology,Huainan 232001,China Department of Material Engineering,Anhui University of Science and Technology,Huainan 232001,China
国际会议
合肥
英文
504-507
2008-06-05（万方平台首次上网日期，不代表论文的发表时间）