WIT Press


Catalytic Pyrolysis Of Straw Biomasses (wheat, Flax, Oat And Barley Straw) And The Comparison Of Their Product Yields

Price

Free (open access)

Paper DOI

10.2495/EQ140942

Volume

190

Pages

9

Page Range

1007 - 1015

Published

2014

Size

397 kb

Author(s)

A. Aqsha, M. M. Tijani & N. Mahinpey

Abstract

Biomass can be converted through a biochemical and also thermochemical process. Pyrolysis is considered one of the thermochemical processes that can be used to breakdown biomass into a liquid product called bio-oil. Pyrolysis of Canadian straw biomasses was studied using a thermogravimetric analyzer (TGA) and a bench-scale horizontal fixed bed reactor, to understand the devolatilization process and, to obtain information about their product yields. In this work, the results of experimental studies on the pyrolysis of several Canadian biomasses are described. The pyrolysis of straw biomass was performed in a fixed-bed reactor at temperatures of 500oC, to study the influence of the feedstock on product distribution. The pyrolysis products were analyzed, and the effect of the catalyst on the product yield is also discussed. The yield of bio-oil and bio-char of the straw pyrolysis using zeolite catalysts was increased up to 46.44% and 38.77%, respectively; while the bio-gas yield was decreased to as low as 13.65%. The use of catalyst 2 (Zeolite YH2.2) had the most significant effect in increasing the yield of bio-oil about 2% and bio-char yield up to 8%. The use of catalyst number 2 also showed the most significant effect during pyrolysis of flax straw by increasing the bio-oil yield up to 46.44%. In the pyrolysis of oat straw, the use of catalyst consistently decreased the bio-gas yield; however, the bio-oil yield increased the most (43.32%) with the use of catalyst 1 (Zeolite YS2.2). The use of catalyst 1 also increased the bio-oil yield during the pyrolysis of barley straw (43.03%). Keywords: biomass, biofuels, devolatilization process, kinetic of pyrolysis, proximate analysis, pyrolysis of biomass.

Keywords

biomass, biofuels, devolatilization process, kinetic of pyrolysis, proximate analysis, pyrolysis of biomass.