Catalytic Pyrolysis of Palm Empty Fruit Bunch over Activated Natural Dolomite Catalyst: Product Distribution and Product Analysis

2020 ◽  
Vol 991 ◽  
pp. 111-116
Author(s):  
Arif Hidayat ◽  
Muflih Arisa Adnan ◽  
Achmad Chafidz
Keyword(s):  
Gas Flow ◽  
Catalytic Pyrolysis ◽  
Fixed Bed ◽  
Product Distribution ◽  
Product Analysis ◽  
Nitrogen Gas ◽  
Empty Fruit Bunches ◽  
Fixed Bed Reactors ◽  
Bio Oil ◽  
Liquid Yield

In this study, an activated natural dolomite catalyst is used as catalyst for the palm empty fruit bunches (PEFB) pyrolysis to produce bio-oil. The research was conducted in fixed bed reactors operating in batches by varying several parameters, which are temperature (400-600°C) and nitrogen gas flow rate (100-300 mL.min-1). The results show that the catalytic pyrolysis process using an activated natural dolomite catalyst obtains a maximum liquid yield of 35.87% when using a 500°C catalytic pyrolysis temperature and the rate of nitrogen gas is 100 cm3/minute, while the yield of gas and solids is 53.12% and 11.76%, respectively. The use of the dolomite activation catalyst influences the product distribution of pyrolysis and the bio-oil chemical compounds.

Study of Catalytic Pyrolysis of Chlorella with γ-Al2O3 Catalyst

2013 ◽  
Vol 873 ◽  
pp. 562-566 ◽  
Author(s):  
Juan Liu ◽  
Xia Li ◽  
Qing Jie Guo
Keyword(s):  
Water Content ◽  
Molecular Sieve ◽  
Catalytic Pyrolysis ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
Pyrolysis Oil ◽  
Heating Value ◽  
Lower Viscosity ◽  
Bio Oil ◽  
Liquid Yield

Chlorella samples were pyrolysed in a fixed bed reactor with γ-Al2O3 or ZSM-5 molecular sieve catalyst at 600°C. Liquid oil samples was collected from pyrolysis experiments in a condenser and characterized for water content, kinematic viscosity and heating value. In the presence of catalysts , gas yield decreased and liquid yield increased when compared with non-catalytic pyrolysis at the same temperatures. Moreover, pyrolysis oil from catalytic with γ-Al2O3 runs carries lower water content and lower viscosity and higher heating value. Comparison of two catalytic products, the results were showed that γ-Al2O3 has a higher activity than that of ZSM-5 molecular sieve. The acidity distribution in these samples has been measured by t.p.d, of ammonia, the γ-Al2O3 shows a lower acidity. The γ-Al2O3 catalyst shows promise for production of high-quality bio-oil from algae via the catalytic pyrolysis.

scholarly journals Bio Oil from Bio Waste (Mahua Oil Cake) Using Fast Pyrolysis Process

2019 ◽  
Vol 8 (10) ◽  
pp. 2525-2528
Keyword(s):  
Flow Rate ◽  
Gas Flow ◽  
Pyrolysis Temperature ◽  
Fast Pyrolysis ◽  
Fixed Bed ◽  
Gas Chromatography Mass Spectrometry ◽  
Gas Flow Rate ◽  
Nitrogen Gas ◽  
Mahua Oil ◽  
Bio Oil

Biomass is a renewable resource utilized to produce bio fuel from bio waste. In this experiment, fixed bed fast pyrolysis is carried out on a model of mahua oil cake (MOC dimension) to conclude predominantly the consequences of pyrolysis temperature, MOC dimension and nitrogen gas flow rate from the pyrolysis yields. The temperature, MOC dimension and nitrogen gas flow rate were varied between 500 to 600 oC, 2 mm to 6 mm and 0.2 to 0.4 liter per min (lpm). The utmost oil yield of 25.90 wt % was attained for a nitrogen gas flow rate of 0.3 lpm, particle size of 4 mm and pyrolysis temperature of 550oC. The pyrolysis oil had a calorific value of 28180 KJ/kg. The pyrolysis gas may well be utilized as a gaseous fuel. In addition, the bio-oil was illustrated by elemental, gas chromatography/mass spectrometry (GC-MS) analyzer.

Potential of Eggshell Waste for Pyrolysis Process

2015 ◽  
Vol 1087 ◽  
pp. 77-80 ◽  
Author(s):  
Rohazriny Rohim ◽  
Razi Ahmad ◽  
Naimah Ibrahim ◽  
Nasrul Hamidin ◽  
Che Zulzikrami Azner Abidin
Keyword(s):  
Catalytic Pyrolysis ◽  
Fixed Bed ◽  
Product Yield ◽  
Fixed Bed Reactor ◽  
Pyrolysis Process ◽  
Nitrogen Gas ◽  
X Ray ◽  
Thermal Gravimetric Analyzer ◽  
Bio Oil ◽  
Eggshell Waste

The eggshell waste which has potential mineral such as calcium oxide (CaO) was studied for biomass pyrolysis in a fixed bed reactor. The objective of this study was to characterize the CaO from waste eggshell and correlated the potential in pyrolysis process. Raw eggshells were analyzed by thermal gravimetric analyzer (TGA). Then, they were calcined at the temperature of 900oC for 1 hour with nitrogen gas. Raw and calcined eggshell were characterized by x-ray fluorescence (XRF). Non-catalytic and catalytic pyrolysis were done in the optimum pyrolysis condition with eggshell as a catalyst. XRF results showed that the percentage of CaO in raw eggshell was increased in calcined eggshell. Bio-oil product yield increased by 25.98% by using eggshell waste as a catalyst. CaO from waste eggshell improved the production of bio-oil in terms of quantity.

Bio-oil production from fast pyrolysis of maple fruit (acer platanoides samaras): product yields

2017 ◽  
Vol 14 (1) ◽  
pp. 55-59 ◽  
Author(s):  
Ali Bahadir ◽  
Turgay Kar ◽  
Sedat Keles ◽  
Kamil Kaygusuz
Keyword(s):  
Gas Flow ◽  
Fast Pyrolysis ◽  
Fixed Bed ◽  
Pyrolysis Product ◽  
Fixed Bed Reactor ◽  
Energy Sources ◽  
Potential Candidate ◽  
Content Type ◽  
Product Yields ◽  
Bio Oil

Purpose The purpose of this paper is to investigate fast pyrolysis of maple fruit as an energy sources. This could serve as a solution to the energy sources problem. Design/methodology/approach Fast pyrolysis of maple fruit (samara) was achieved in a fixed bed reactor. The pyrolysis experiments have been conducted on the sample of maple seeds to particularly determine the effects of pyrolysis temperature, particle size and sweep gas flow rate on the pyrolysis product yields. Findings The oil of maple fruit from fast pyrolysis has good properties to be a potential candidate as a biofuel or as a source of chemicals. In addition to being environmentally desirable, it can reduce the energy cost, e.g. that Turkey imports a majority of its energy. Originality/value The use of maple fruit for fast pyrolysis and pyrolysis conditions impact on the yields of pyrolysis liquid can be considered as novel aspects of this paper.

scholarly journals The Effect of Pyrolysis Temperature on Copyrolysis of Lignite and Pistachio Seed in a Fixed-bed Reactor

2021 ◽  
Vol 15 ◽  
pp. 49-52
Author(s):  
Özlem Onay
Keyword(s):  
Elemental Analysis ◽  
Pyrolysis Temperature ◽  
Fixed Bed ◽  
Product Distribution ◽  
The Other ◽  
Fixed Bed Reactor ◽  
Oil Yield ◽  
Pyrolysis Oil ◽  
Nitrogen Gas ◽  
Experimental Conditions

Co-pyrolysis of lignite and pistachio seed (CPLPS) under nitrogen gas was performed in a Heinze retort. The effect of pyrolysis temperature on product distribution of CPLPS investigated under heating rate of 10°Cmin-1 and blending ratio of 50(wt)%. Biomass is higher yield to be pyrolyzed than lignite and addition of biomass promotes the pyrolysis of lignite. In the range of the experimental conditions investigated the yield of the product is proportional to pyrolysis temperature. On the other hand, considerable synergetic effects were observed during the co-pyrolysis in a fixed bed reactor leading to increase in oil yield. Maximum pyrolysis oil yield of 27.2% was obtained at pyrolysis temperature of 550°C. The obtained oils are characterized by GC, and elemental analysis.

scholarly journals Comparison of Cr/C and Cr2O3/Z Catalysts on Hydrocracking of Bio Oil from Pyrolysis of Palm Empty Fruit Bunches

Molekul ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. 244
Author(s):  
Zainal Fanani ◽  
Hasanuddin Hasanuddin ◽  
Addy Rachmat ◽  
Muhammad Said
Keyword(s):  
Surface Area ◽  
Gas Flow ◽  
Liquid Product ◽  
Hydrogen Gas ◽  
Impregnation Method ◽  
Pyridine Adsorption ◽  
Xrd Pattern ◽  
Empty Fruit Bunches ◽  
Oxidation Reduction ◽  
Bio Oil

Bio-oil derived from palm empty fruit bunch is not suitable for fuel purpose due to high acidity and low heating. Cr2O3/Zeolite and Cr/C catalysts was developed to upgrade bio-oil through hydrocracking. The catalyst prepared via impregnation method followed by oxidation-reduction. Ammonia and pyridine adsorption used to evaluate acidity as well as crystallinity assessment by using XRD. Hydrocracking reaction conducted in hydrogen gas flow rates 0.5-3.0 L/min, the surface area of Cr/C catalyst found out 1,497.07-1,652.58 m2/g, whilst the temperatures 450 to 700 ℃ and the catalyst weights between 0.5 to 2.5 g. Acidity calculated from ammonia and pyridine adsorption shows Cr2O3/Zeolite has higher value compare to pristine Zeolite. XRD pattern shows Cr2O3/Zeolite has high crystallinity as indicated by sharp and pointed diffraction peaks. The optimum condition of hydrocracking confirmed by lower density of liquid product. The variables obtained by a separate experiments shows that H2 gas flow rate best at 2.5 L/min, temperature of hydrocracking 500 ℃ for Cr2O3/Zeolite and 600oC for Cr/C whereas weight of Cr2O3/Zeolite catalyst is 1.5 g. The Cr/C catalyst that gave low density product possess 1,554.48 m2/g surface area. GCMS data shows increase on the number of straight chain compounds within the hydrocracking product.

scholarly journals Effect of Potassium Carbonate Catalyst on Pyrolysis of Milicia excelsa in a Fixed Bed Reactor

2020 ◽  
Vol 5 (2) ◽  
Author(s):  
Pious O Okekunle ◽  
Oluwatobi S Awani ◽  
Daniel O Jimoh
Keyword(s):  
Potassium Carbonate ◽  
Liquid Fuel ◽  
Catalytic Pyrolysis ◽  
Fixed Bed ◽  
Product Distribution ◽  
Fixed Bed Reactor ◽  
Catalyst Amount ◽  
Different Temperatures ◽  
Definite Pattern ◽  
Milicia Excelsa

The effect of potassium carbonate catalyst on the products distribution from pyrolysis of Milicia excelsa (Iroko) at various temperatures (400, 500 and 600 oC) was investigated. Milicia excelsa sawdust was obtained from a sawmill in Ogbomoso, South-Western Nigeria and was sundried for five days in order to reduce its moisture content. Catalytic pyrolysis of the sawdust was performed with different amounts of catalyst (10, 20, 30 and 40 wt.%). Non-catalytic pyrolysis was also performed for the same temperatures and the products distributions from both batches were compared. Char yield generally increased with increase in catalyst amount for all the temperatures considered. Tar yield did not follow any definite pattern with increasing amount of catalyst as different trends were obtained for different temperatures. Gas yield generally decreased with increase in catalyst amount in the feed. Char yields from non-catalytic experiments were higher than those obtained from catalytic runs, with the highest value of 68% at 400 oC. Tar yields from catalytic pyrolysis were higher than those from non-catalytic process at 400 oC (biomass/catalyst ratio of 90/10) and at 500 oC (biomass/catalyst ratios of 70/70 and 60/40), the highest yield being 29.47% at 500 oC and biomass/catalyst ratio of 60/40. Gas yields from catalytic pyrolysis were higher than those from non-catalytic runs except at 500 oC (biomass/catalyst ratio of 60/40), the highest being 51.3% at 600 oC (biomass/catalyst ratio of 90/10). By making use of appropriate biomass/catalyst ratio and temperature, the yield of liquid fuel from catalytic pyrolysis of Milicia excelsa can be increased.Keywords— Catalyst, potassium carbonate, pyrolysis, biomass, product distribution

Chemical Kinetics Modeling on Bio-Oil Production from Pyrolysis of Sugarcane Bagasse

2021 ◽  
Vol 1034 ◽  
pp. 199-205
Author(s):  
Dewi Selvia Fardhyanti ◽  
Megawati ◽  
Haniif Prasetiawan ◽  
Noniek Nabuasa ◽  
Mohammad Arik Ardianta
Keyword(s):  
Sugarcane Bagasse ◽  
Alternative Energy ◽  
Fixed Bed ◽  
Raw Material ◽  
Fixed Bed Reactor ◽  
Thermochemical Conversion ◽  
Pyrolysis Process ◽  
Product Analysis ◽  
Biomass Waste ◽  
Bio Oil

Biomass is a source of alternative energy that is environmentally friendly and very promising as one of the sources of renewable energy at present. The best candidate for the biomass waste for pyrolysis raw material is sugarcane bagasse. The sugarcane bagasse is a fibrous residue that is produced after crushing sugarcane for its extraction. Sugarcane bagasse is very potential to produce bio-oil through a pyrolysis process. The advantage of utilizing sugarcane bagasse is to reduce the amount of waste volume. Pyrolysis is a simple thermochemical conversion that transforms biomass with the near absence of absence of oxygen to produce fuel. Experiments were carried out on the fixed bed reactor. The analysis was carried out over a temperature range of 300-500 °C under atmospheric conditions. Products that are usually obtained from the pyrolysis process are bio-oil, char, and gas. Product analysis was performed using Gas Chromatography (GC) and Mass Spectrometry (MS) analysis. This research is aimed to study the kinetics of the sugarcane bagasse pyrolysis process to produce bio-oil. Three different models were proposed for the kinetic study and it was found that model III gave the best prediction on the calculation of pyrolysis process. From the calculation results, kinetic parameters which include activation energy (Ea) and the k factor (A) at a temperature of 300 °C is 2.4730 kJ/mol and 0.000335 s-1, at a temperature of 400 °C is 3, 2718 kJ/mol and 0.000563 s-1, and at a temperature of 500 °C is 4.8942 kJ/mol and 0.0009 s-1.

Two-Step Catalytic Pyrolysis of Corn Stover in a Dual Bed Reactor

2014 ◽  
Vol 1051 ◽  
pp. 143-147 ◽  
Author(s):  
Zhao Ping Zhong ◽  
Zu Wei Song ◽  
Bo Zhang ◽  
Zhi Chao Liu ◽  
Ze Yu Xue
Keyword(s):  
Corn Stover ◽  
Reaction Temperature ◽  
Catalytic Pyrolysis ◽  
Fixed Bed ◽  
Relative Content ◽  
Fixed Bed Reactor ◽  
Catalytic Reforming ◽  
Reforming Catalysts ◽  
Bio Oil ◽  
Pyrolysis Catalyst

Experiments on the catalytic pyrolysis of corn stover and catalytic reforming of pyrolysis vapors were conducted in a tubular fixed-bed reactor. The influence of reaction temperature, pyrolysis catalysts, dosage of pyrolysis catalysts and dosage of reforming catalysts were investigated. The results showed that with the increase of reaction temperature, the oil and char yields decreased and the gas yield increased. The highest-quality bio-oil was achieved at the reaction temperature of 400 °C, and dolomite showed a best performance on the biomass pyrolysis compared to other catalysts. Besides, When the dosage of pyrolysis catalyst was 1 g, the relative content of aromatic was 43.92 wt% and the relative content of acids was 47.58 wt%, and when the dosage of reforming catalyst was 2 g, the relative content of aromatic was 34.1 wt% and the relative content of acids was 58.7 wt%.

Sign in / Sign up

Export Citation Format

Share Document