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Issue No.Vol. No. 5 Issue No. 3 - Publication Year 2016

AuthorKirenraj DoraiselvanSuzana YusupCheah Kin WaiNur Suriawanie MudaHaswin Kaur A/p Gurdeep Singh

Article TitleOptimization Studies On Catalytic Pyrolysis Of Empty Fruit Bunch (efb) Using L9 Taguchi Orthogonal Array

From Page No.27

To Page No.32

Release Date14-02-2017

Abstract

 

In this investigation, catalytic pyrolysis of empty fruit bunch (EFB) was studied and optimized in terms of bio-oil and char yields
by using Taguchi L9 Orthogonal Array method. The effects of pyrolysis temperatures, catalyst loadings and particle sizes on the
product yields were investigated and discussed in this paper. The catalytic pyrolysis is performed in a semi-batch reactor which
is externally heated by an electrical vertical split tube furnace. Under the nitrogen flow rates of 60 ml/min, 80 ml/min and 100ml/
min, 15g of EFB biomass with the particle sizes of 100 μm, 250 μm, 500 μm were thermally decomposed at three pyrolysis
temperatures of 573K, 673K and 773K, along with Zeolite HZSM-5 catalyst loadings of 1 wt%,5 wt% and 12 wt%. From the product
analysis, a maximum liquid bio-oil yield of 64.4 wt% were obtained at catalyst loading of 1.5 wt.%, reaction temperature of 773K,
nitrogen flow rate of 100 mL/min, and particle size of 250 μm. Meanwhile, at catalyst loading of 3.25 wt.%, reaction temperature of
773K,, nitrogen flow rate of 60 mL/min and particle size of 250 μm, the bio char yield formed was as low as 18.6 wt.% which could
be mainly attributed to secondary cracking of char residue. The predicted maximum liquid yield and minimum bio char yield is
validated with an experimental run at the corresponding predicted conditions.

 

In this investigation, catalytic pyrolysis of empty fruit bunch (EFB) was studied and optimized in terms of bio-oil and char yields

by using Taguchi L9 Orthogonal Array method. The effects of pyrolysis temperatures, catalyst loadings and particle sizes on the

product yields were investigated and discussed in this paper. The catalytic pyrolysis is performed in a semi-batch reactor which

is externally heated by an electrical vertical split tube furnace. Under the nitrogen flow rates of 60 ml/min, 80 ml/min and 100ml/

min, 15g of EFB biomass with the particle sizes of 100 μm, 250 μm, 500 μm were thermally decomposed at three pyrolysis

temperatures of 573K, 673K and 773K, along with Zeolite HZSM-5 catalyst loadings of 1 wt%,5 wt% and 12 wt%. From the product

analysis, a maximum liquid bio-oil yield of 64.4 wt% were obtained at catalyst loading of 1.5 wt.%, reaction temperature of 773K,

nitrogen flow rate of 100 mL/min, and particle size of 250 μm. Meanwhile, at catalyst loading of 3.25 wt.%, reaction temperature of

773K,, nitrogen flow rate of 60 mL/min and particle size of 250 μm, the bio char yield formed was as low as 18.6 wt.% which could

be mainly attributed to secondary cracking of char residue. The predicted maximum liquid yield and minimum bio char yield is

validated with an experimental run at the corresponding predicted conditions.

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