Welcome to Chemistry and Industry of Forest Products,

›› 2013, Vol. 33 ›› Issue (6): 106-110.doi: 10.3969/j.issn.0253-2417.2013.06.020

• 1研究报告 • Previous Articles     Next Articles

Application of Supercritical Carbon Dioxide Fluid Extraction Technology in Furfural Production Process

LI Zhi-song1, ZHU Bin2, TANG Xin-jun1, ZHOU Guo-e1   

  1. 1. Chemistry Engineering Department, Hunan Chemical Industry Professional Technology College, Zhuzhou 412004, China;2. Analytical and Testing Center, South China University of Technology, Guangzhou 510640, China
  • Received:2012-11-19 Revised:1900-01-01 Online:2013-12-30 Published:2013-12-30

Abstract: The supercritical carbon dioxide fluid extraction technology was used in the furfural production process by dehydration and cyclization of xylose. Under the conditions of feeding mass fraction 5.0% xylose 680 g and mass fraction 5.0% dilute sulfuric acid 6.8 g,with the flow rate of SC-CO2 extractant 0.10 g/s and reaction for 180 min. under 170 ℃, the conversion of xylose increased 2.4 percent point. The selectivity of furfural increased 29.8 percent point and the furfural yield increased 23.4 percent point, compared with that without using SC-CO2. Under experiment conditions with SC-CO2 as extractant, SC-CO2 temperature (35±1) ℃, pressure (16±0.5) MPa, the optimum xylose dehydration and cyclization reaction temperature 180 ℃, the flow rate of SC-CO2 extractant 0.10 g/s,and reaction time 180 min, the furfural yield was up to 63.0%

Key words: supercritical CO2 fluid, extraction, reaction distillation, furfural, xylose

CLC Number: