Title:
Change of Kinetic Rates on Hydrothermal Gasification of Model Biomass in Supercritical Water
Author(s):
Promdej, C., Matsumura, Y.
Document(s):
Paper
Abstract:
Glucose, as a typical model compound for lignocellulosic biomass, was gasified in a tubular reactor under the pressure of 20¬25 MPa. The reaction temperature ranged from 300 to 450 oC. Hydrothermal decomposition of glucose in the reaction network model, assuming the first¬order reaction, was constructed, based on experimental product yields of glucose, fructose, char, gas, furfural, 5¬HMF and other water¬soluble products (TOC). The rates of glucose decomposition had two different behaviors; Arrhenius and non¬Arrhenius, at supercritical water condition. It implied that the glucose decomposition consisted of radical and ionic reactions: the former showing the Arrhenius behavior, and the latter showing the non¬Arrhenius behavior. The gasification rate following Arrhenius behavior is promoted by high temperature and pressure conditions.
Keywords:
biomass, hydrogasification, lignocellulose, supercritical water
Topic:
R&D on Biomass Conversion Technologies for Heating, Electricity and Chemicals
Subtopic:
Gasification for synthesis gas production
Event:
20th European Biomass Conference and Exhibition
Session:
2BV.2.54
Pages:
1142 - 1143
ISBN:
978-88-89407-54-7
Paper DOI:
10.5071/20thEUBCE2012-2BV.2.54
Price:
FREE
