Central composite rotatable design for liquefaction of pine barks


AÇIKALIN K., KARACA F. , Bolat E.

FUEL PROCESSING TECHNOLOGY, cilt.87, ss.17-24, 2005 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 87 Konu: 1
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1016/j.fuproc.2005.04.005
  • Dergi Adı: FUEL PROCESSING TECHNOLOGY
  • Sayfa Sayıları: ss.17-24

Özet

In this study, the effects of various experimental parameters on the liquefaction yields of a biomass waste material, namely pine barks, were investigated statistically. The key parameters investigated were temperature, pressure, solvent to pine bark ratio and tetralin to solvent mixture ratio. A statistical experimental design based on second order central composite rotatable design was planned fixing the liquefaction period at I hour. The experimental design was done at five levels and the studied ranges for temperature, pressure, solvent to pine barks ratio and tetralin to solvent mixture ratio were 300-400 degrees C, 10-50 atm, 1/1-5/1 and 0/1-1/1, respectively. The effects of these factors on dependent variables, namely, oil+gas, asphaltene and preasphaltene yields and total conversion were studied in detail. To determine the significance of effects, the analysis of variance with 99.9% confidence limits was used. The model equations for dependent variables were also developed and an optimization study was done. (c) 2005 Published by Elsevier B.V.