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The pyrolysis of pistacia khinjuk seed was investigated with the aim to study the product distribution and their chemical compositions and to identify optimum process conditions for maximizing the bio-oil yield. Fast and catalytic pyrolysis of biomass sample with two selected commercial catalyst, namely BP 3189 and Criterion-424 have been conducted in a well-swept resistively heated fixed bed reactor...
Fast pyrolysis of heavy metal contaminated birch (CMB), resulting from phytoremediation, is investigated. The effect of the pyrolysis temperature (673, 773, 873K) on the composition and evolution of the bio-oil/tar fraction and the gas fraction has been studied. The knowledge of the composition of the gaseous and liquid pyrolysis fractions, as a function of the pyrolysis temperature, affects directly...
Presently, little or no information of implementing fast pyrolysis for looking into the potential valorisation of heavy metal contaminated biomass is available. Fast pyrolysis of heavy metal contaminated biomass (birch and sunflower), containing high amounts of Cd, Cu, Pb and Zn, resulting from phytoremediation, is investigated. The effect of the pyrolysis temperature (623, 673, 773 and 873K) and...
This short communication describes the evaluation of the fast pyrolysis behaviour of empty fruit bunches (EFB), one of the solid wastes of the rapidly expanding palm oil industry. A 150g/h fluidised bed bench scale fast pyrolysis unit is used to study the impact of the following key variables; the reactor temperature in the range of 400–600°C, the residence time in the range of 0.79–1.32s, and a range...
Fast pyrolysis of poplar wood followed with catalytic upgrading of the pyrolysis vapors was performed using analytical pyrolysis–gas chromatography/mass spectrometry (Py-GC/MS). The catalysts applied in this study were three commercial meso- or macroporous catalysts (TiO 2 (Rutile), TiO 2 (Anatase) and ZrO 2 &TiO 2 ) and their modified ones with incorporation of...
Pyrolysis experiments were performed between 800°C and 950°C on wood particles with diameters from 350 to 800μm in a lab-scale drop tube reactor to reproduce surface heat flux representative of gasifiers conditions. It was shown that particle size affected the required pyrolysis time but changed neither gas/tar/char mass yields nor composition of the products at the end of pyrolysis. The initial particle...
The aim of this study is to characterise and compare fast pyrolysis product yields from straw, high yielding perennial grasses and hardwoods. Feedstocks selected for this study include: wheat straw (Triticum aestivum), switch grass (Panicum virgatum), miscanthus (Miscanthus x giganteus), willow short rotation coppice (Salix viminalis) and beech wood (Fagus sylvatica). The experimental work is divided...
The fast pyrolysis of rice husk has been performed in the 400–600°C range in a continuous pyrolysis bench-scale plant equipped with a conical spouted bed reactor (CSBR) with continuous removal of the char. In this paper it is studied the influence of temperature on product yields and products composition (gas, bio-oil and char) as well as the effect over the char properties. Bio-oil yield is very...
The techno-economic performance analysis of biofuel production and electric power generation from biomass fast pyrolysis and bio-oil hydroprocessing is explored through process simulation. In this work, a process model of 72 MT/day pine wood fast pyrolysis and bio-oil hydroprocessing plant was developed with rate based chemical reactions using Aspen Plus® process simulator. It was observed from simulation...
Co-pyrolysis of red oak and high density polyethylene (HDPE) was conducted in a laboratory-scale, continuous fluidized bed reactor in a temperature range from 525 to 675°C. Pyrolysis products, including two fractions of pyrolysis-oil, non-condensable gases and char were analyzed to assess the influence of pyrolysis temperature and co-feeding of biomass with HDPE. It was found that increasing pyrolysis...
The vast stores of biomass available worldwide have the potential to replace significant amounts of petroleum fuels. Fast pyrolysis of biomass is one of several paths by which biomass can be converted to higher value products. Wood pyrolysis oil (WPO) has been regarded as an alternative to petroleum fuel for use in diesel engines. However, the application of WPO in diesel engines is constrained by...
This study reports the pyrolysis of the acid-impregnated cellulose at 50–325°C. The presence of acid is found to significantly change cellulose pyrolysis mechanism. While the pyrolysis of raw cellulose mainly proceeds with depolymerisation reactions, the pyrolysis of the acid-impregnated cellulose is dominantly contributed by dehydration reactions. The acid impregnation process seems to weaken the...
We have developed a biomass-derived solid fuel, referred to as Lignocol, that can reduce sulfur and nitrogen emissions from coal-fired power plants without suffering the ash fouling and loss of boiler capacity usually associated with co-firing biomass. To produce Lignocol, lignocellulosic biomass was pyrolyzed to vapors that were condensed as distinct fractions of bio-oil. The heavy ends of bio-oil,...
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