Fixed-bed pyrolysis of safflower seed: influence of pyrolysis parameters on product yields and compositions

Beis, Sedat H.; Оnаy, Özlem; Koçkar, Ömer Mete

doi:10.1016/s0960-1481(01)00109-4

Cited by 182 publications

(75 citation statements)

References 12 publications

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“…Each of straw biomass has different composition and suspected to have significant effects on the product yield and composition (Wang et al [5]). Temperature of the reaction, heating rate, particle size, and residence time are parameters that significantly affect the properties of the product and its composition (Beis et al [6]; Vamvuka [7]). For instance, Haykiri-Acma [8] suggested that increasing the heating rate to 50ºC/min led to higher conversion rates due to the better mass and heat transfer inside the reactor (Biagini et al [9]).…”

Section: Introductionmentioning

confidence: 99%

Catalytic pyrolysis of straw biomasses (wheat, flax, oat and barley straw) and the comparison of their product yields

Aqsha

Tijani

Mahinpey

2014

WIT Transactions on Ecology and the Environment

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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 500 o C, 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%).

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Section: Introductionmentioning

confidence: 99%

Catalytic pyrolysis of straw biomasses (wheat, flax, oat and barley straw) and the comparison of their product yields

Aqsha

Tijani

Mahinpey

2014

WIT Transactions on Ecology and the Environment

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“…In addition, at higher temperature of 500 o C, all the three primary reactions occurred which were dehydration, depolymerization and a certain degree of fragmentation reactions of the biomass components. [18], [19] and [20] reported that the optimum pyrolysis temperature of 500 o C but [21] and [22] reported a slightly higher pyrolysis temperature of 550 o C as the optimum pyrolysis temperature. The difference in the optimum pyrolysis temperature depended on several factors which among them was the pyrolysis temperature.…”

Section: Resultsmentioning

confidence: 99%

Optimization of the pyrolysis process of empty fruit bunch (EFB) in a fixed-bed reactor through a central composite design (CCD)

Mohamed

Hamzah

Daud

2014

AIP Conference Proceedings

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Abstract. The production of crude palm oil from the processing of palm fresh fruit bunches in the palm oil mills in Malaysia hs resulted in a huge quantity of empty fruit bunch (EFB) accumulated. The EFB was used as a feedstock in the pyrolysis process using a fixed-bed reactor in the present study. The optimization of process parameters such as pyrolysis temperature (factor A), biomass particle size (factor B) and holding time (factor C) were investigated through Central Composite Design (CCD) using Stat-Ease Design Expert software version 7 with bio-oil yield considered as the response. Twenty experimental runs were conducted. The results were completely analyzed by Analysis of Variance (ANOVA). The model was statistically significant. All factors studied were significant with p-values < 0.05. The pyrolysis temperature (factor A) was considered as the most significant parameter because its F-value of 116.29 was the highest. The value of R 2 was 0.9564 which indicated that the selected factors and its levels showed high correlation to the production of bio-oil from EFB pyrolysis process. A quadratic model equation was developed and employed to predict the highest theoretical bio-oil yield. The maximum bio-oil yield of 46.2 % was achieved at pyrolysis temperature of 442.15 o C using the EFB particle size of 866 μm which corresponded to the EFB particle size in the range of 710-1000 μm and holding time of 483 seconds.

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“…Therefore, there is a need for guidelines to manage these wastes through technologies that minimize their environmental impact and lead to a sustainable use of resources [10][11][12][13][14][15]. [20,21] Press Triphasic 40 Kg 40 kg with 30-40% of moisture [22] Triphasic with centrifugation >100 Kg 55 Kg with 40-50% of moisture [23] R. Loussert et al and A. Achkari-Begdour [16,17] suggested solutions and alternatives to fight against the pollution of environment by olive mill waste. Among the principal ways of valorization, one finds thermochemical conversion.…”

Section: Introductionmentioning

confidence: 99%

“…At higher temperature, gaseous products increase with rising tem-perature. According to the literature, the yield of liquid, solid and gaseous products can be divided into three temperature ranges: low temperature carbonization (≤400 °C) (this review does not include discussion on carbonization), fast pyrolysis (≥500 °C) and slow pyrolysis (low heating rates of biomass) [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

A review on thermochemical treatment of biomass: Pyrolysis of olive mill wastes in comparison with other types of biomass

Guida

Hannioui

2016

Progress in Agricultural Engineering Sciences

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Abstract. Each year, a great quantity of olive oil is produced by the unit mill of trituration. This activity generates two by-products named olive mill wastewater and olive mill solid waste representing major potential waste and environmental problem. However, there is growing interest in pyrolysis as a technology to treat wastes to produce valuable oil, char and gas products. The major important aim of waste pyrolysis is to produce liquid fuel or bio-oil, which is easy to store, transport and can be an alternative to energy source. The key influence on the product yield is the type of biomass feedstock and operating parameters (especially temperature and heating rate). It is important to investigate the effect of variables on response yield and impulse about their optimization. This study reviews operating variable from existing literature on olive mill wastes (OMSW and OMWW) in comparison with various types of biomass. The major operating variables include type of feedstock, final temperature of pyrolysis, heating rate and particle size. The scale of this paper is to analyse the influence of operating parameters on production of pyrolysis bio-oil, char and gaseous products.

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Fixed-bed pyrolysis of safflower seed: influence of pyrolysis parameters on product yields and compositions

Cited by 182 publications

References 12 publications

Catalytic pyrolysis of straw biomasses (wheat, flax, oat and barley straw) and the comparison of their product yields

Catalytic pyrolysis of straw biomasses (wheat, flax, oat and barley straw) and the comparison of their product yields

Optimization of the pyrolysis process of empty fruit bunch (EFB) in a fixed-bed reactor through a central composite design (CCD)

A review on thermochemical treatment of biomass: Pyrolysis of olive mill wastes in comparison with other types of biomass

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