中国化学工程学报(英文版)
中國化學工程學報(英文版)
중국화학공정학보(영문판)
CHINESE JOURNAL OF CHEMICAL ENGINEERING
2000年
4期
321-325
,共5页
cellulose%near-critical water%decomposition kinetics%continuous process
A pilot-scale apparatus for continuous supercritical and near-critical water reaction was set up. A high-
pressure slurry supplying system was developed to feed the solid material-water slurries. The apparatus features
temperature up to 600℃, pressure up to 40MPa, residence time from 24s to 15min, maximum amount of slurry
supply of 2.4 L.h-1, maximum solid content of slurry up to 10%(by mass) for cellulose from Merck, and resistance to
corrosion. Long-time runs of decomposition of cellulose were carried out and steady runs were confirmed. Kinetics
of cellulose decomposition was studied. The apparent activation energy evaluated was 147kJ·mol-1. In addition,
a new three-step pathway for cellulose hydrolysis was proposed. The derived kinetic equation is in good agreement
with the experimental data.
