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Jeno Hancsók - One of the best experts on this subject based on the ideXlab platform.
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Co-processing a waste fatty acid mixture and unrefined gas oil to produce renewable diesel Fuel-Blending components
Energy Conversion and Management, 2019Co-Authors: Orsolya Tóth, András Holló, Jeno HancsókAbstract:Abstract With the catalytic quality improvement of fatty acids, renewable alternative Fuels can be produced from waste sources and contribute to sustainable mobility. The aim of this study was to investigate the Blending of waste fatty acid in 10, 20, and 30 wt% into unrefined gas oils with different qualities during co-processing in a fixed-bed pilot-scale reactor on a commercial, sulphided nickel–molybdenum–alumina catalyst. The effect of the feedstock’s fatty acid content and the process parameters on the hydrocarbon composition, sulphur content, aromatic content, and the performance properties of the main products have been investigated. During the experiments, the process parameters were varied in different ranges, such as temperatures of 300–360 °C, hydrogen/hydrocarbon volume ratio of 600 N m3/m3, pressure of 50 bar, and liquid hourly space velocity of 1.0–3.0 h−1. From the results of these experiments, it was determined that fatty acids were completely converted. Under the selected favourable process parameters, which were 10 wt% fatty acid, 360 °C, and 1.0 h−1, high-quality diesel Fuel components with high hydrogen contents were produced. The excellent properties of the diesel Fuel component, such as 4 mg/kg sulphur content, 1.3 wt% polycyclic aromatic content, and 13.7 wt% hydrogen content promoted cleaner combustion and reduced emissions. Therefore, the obtained renewable diesel Fuel-Blending component is more environmentally sustainable than conventional diesel Fuels.
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diesel Fuel Blending components from mixture of waste animal fat and light cycle oil from fluid catalytic cracking
Journal of Environmental Management, 2018Co-Authors: Jeno Hancsók, Daniel Sagi, József ValyonAbstract:Abstract Sustainable production of renewable Fuels has become an imperative goal but also remains a huge challenge faced by the chemical industry. A variety of low-value, renewable sources of carbon such as wastes and by-products must be evaluated for their potential as feedstock to achieve this goal. Hydrogenation of blends comprising waste animal fat (≤70 wt%) and low-value fluid catalytic cracking light cycle oil (≥30 wt%), with a total aromatic content of 87.2 wt%, was studied on a commercial sulfided NiMo/Al 2 O 3 catalyst. The Fuel fraction in the diesel boiling range was separated by fractional distillation from the organic liquid product obtained from the catalytic conversion of the blend of 70 wt% waste animal fat and 30 wt% light cycle oil. Diesel Fuel of the best quality was obtained under the following reaction conditions: T = 615–635 K, P = 6 MPa, LHSV = 1.0 h −1 , H 2 /feedstock ratio = 600 Nm 3 /m 3 . The presence of fat in the feedstock was found to promote the conversion of light cycle oil to a paraffinic Blending component for diesel Fuel. Thus, a value-added alternative Fuel with high biocontent can be obtained from low-value refinery stream and waste animal fat. The resultant disposal of waste animal fat, and the use of Fuel containing less fossil carbon for combustion helps reduce the emission of pollutants.
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JET Fuel Production from High Molecular Weight Fischer- Tropsch Paraffin Mixture
Chemical engineering transactions, 2016Co-Authors: Szabina Tomasek, András Holló, Ferenc Lónyi, József Valyon, Jeno HancsókAbstract:The quality requirements of Fuels have significantly increased in the last 20 years. Furthermore, the demand for Fuels produced from non-edible plants or waste biomass has become more important, due to more stringent environmental protection and political regulations. Fuel Blending components are also produced from synthesis gas by Fischer-Tropsch synthesis. The boiling point of the 40 - 45 % of Low-Temperature Fischer- Tropsch product is higher than 370 °C, so-called Fischer-Tropsch wax. The wax is less valuable commercially, thus it is appropriate to hydrocrack it to more valuable liquid hydrocarbons, having lower molecular weight. In case of hydrocracking hydroisomerization also take place. Isoparaffins have advantageous performance properties; they burn clean relative to aromatic hydrocarbons, and they are desirable components of Fuels. In our experimental work we investigated the Fuel purpose hydrocracking of high molecular weight Fischer- Tropsch wax on Pt/H-ZSM5, Pt/H-Beta and Pt/H-[BAl]MCM22 zeolite catalysts. The main properties of feedstock were the followings: carbon number range: C13-C69, C21+ hydrocarbon content: > 99 %, pour point: 84 °C. The main products were gases (10 - 48 %) and gasoline (10 - 60 %) on the tested catalysts. The C21- product – formed on Pt/H-Beta zeolite – contained 85 % isoparaffin hydrocarbon, while on the Pt/H-[BAl]MCM22 and Pt/H-ZSM5 zeolite took place isomerization in smaller degree (iso/n-paraffin ratio: 2 - 3 and 0.5 - 0.6, respectively). In our experiments we could produce Fuel components – belonging to different boiling point range – with good yield and we observed shape selective effects and special selectivity as well, due to specific structural of zeolites.
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Investigation of Production of Motor Fuel Components on Heterogeneous Catalyst with Oligomerization
Topics in Catalysis, 2013Co-Authors: Eszter Kriván, István Valkai, Jeno HancsókAbstract:The production of high isoparaffin containing motor Fuels which comply with the changing needs and standards is a significant research area. Because of this type of hydrocarbons have numerous application, environmental and economical benefits. One of the possible productions for this type of hydrocarbons is oligomerization of light olefins followed by their hydrogenation. Based on our experimental results we established that the examined various catalytic systems containing acidic ion exchange resin catalyst are suitable for the flexible production of different motor Fuel Blending components (gasoline, middle distillate) with high conversion (92.4 %) and good selectivity in particular at the process parameters ( T : 130 °C, P : 30 bar, LHSV: 1.0 h^−1) we found favourable.
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Development of Multifunctional Detergent-Dispersant Additives Based on Fatty Acid Methyl Ester for Diesel and Biodiesel Fuel
Biodiesel- Quality Emissions and By-Products, 2011Co-Authors: Ádám Beck, Márk Bubálik, Jeno HancsókAbstract:Nowadays Fuel Blending components produced from renewable sources (biodiesel, mixture of isoand normal-paraffins produced from triglycerides, gasoline and diesel produced from synthesis gas etc.) are an important part of the Blending pool (Hancsok et al., 2007; Krar et al., 2010a, 2010b). The use of Fuels produced from renewable resources is supported by several EU directives (2003/30/EC (BioFuels), 2009/28/EC (Renewable Energy Directive) and 2009/30/EC (Fuel Quality Directive). The biocomponents of diesel Fuel are mainly fatty acid methyl ester (biodiesel), produced from the catalytic transesterification of vegetable oils. Their Blending is allowed up to 7% by the EN 590:2009 diesel Fuel standard. The application of biodiesels causes several problems due to their properties which are different from that of the fossil diesel Fuel: higher cold filter plugging point (CFPP), higher viscosity, hydrolysis (corrosion), storage stability problems, lower energy content etc. As a result new challenges rose to ensure the high quality of diesel Fuel and the proper function of the engine by applying high performance additives in the diesel Fuel and engine oil (Beck et al., 2010; Bubalik et al., 2005).
Eszter Kriván - One of the best experts on this subject based on the ideXlab platform.
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Investigation of Production of Motor Fuel Components on Heterogeneous Catalyst with Oligomerization
Topics in Catalysis, 2013Co-Authors: Eszter Kriván, István Valkai, Jeno HancsókAbstract:The production of high isoparaffin containing motor Fuels which comply with the changing needs and standards is a significant research area. Because of this type of hydrocarbons have numerous application, environmental and economical benefits. One of the possible productions for this type of hydrocarbons is oligomerization of light olefins followed by their hydrogenation. Based on our experimental results we established that the examined various catalytic systems containing acidic ion exchange resin catalyst are suitable for the flexible production of different motor Fuel Blending components (gasoline, middle distillate) with high conversion (92.4 %) and good selectivity in particular at the process parameters ( T : 130 °C, P : 30 bar, LHSV: 1.0 h^−1) we found favourable.
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the oligomerization of olefin hydrocarbons in light fcc naphtha on ion exchange resin catalyst
Chemical engineering transactions, 2012Co-Authors: Eszter Kriván, István Valkai, J HancsokAbstract:In our experimental work our aim was the investigation of the possibility to convert olefin hydrocarbons of a light FCC naphtha fraction with oligomerization. In this framework, we studied the production possibilities of higher carbon number isoolefin rich motor Fuel Blending components, with oligomerization of the C4-C6 olefin content of the feedstock on water-containing acidic ion exchange resin catalysts. From the studied catalysts the ion exchange resin showed the highest oligomerization activity: the conversion of the olefins was 90.9 % and the share of oligomer products was 29.0 %. After hydrogenation of the C8-C16 isoolefin mixture, the octane number of gasoline product is around 100, the JET product has high energy content and low crystallization point, the cetane number of gas oil product is high and it has a good CFPP (cold filter plugging point). So with these two catalytic steps valuable products can be produced from light olefin-containing refinery by-products.
Masoud Kayhanian - One of the best experts on this subject based on the ideXlab platform.
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control of in bed agglomeration by Fuel Blending in a pilot scale straw and wood Fueled afbc
Biomass & Bioenergy, 1993Co-Authors: D Salour, B M Jenkins, M Vafaei, Masoud KayhanianAbstract:Abstract Bed agglomeration in a pilot scale atmospheric fluidized bed combustor was controlled by Blending wood into rice straw in concentrations of 50% wood or more and stoichiometrically holding reaction temperature at or below 800°C. At higher straw concentrations, agglomeration of the bed occurred over run times inversely proportional to the straw concentration in the blend. Bed agglomeration was preceded by a characteristic decline in bed pressure drop most likely related to combustion air channeling through the bed. Blend ash composition was not substantially affected until straw concentration decreased to 50% or below because of the four-fold higher ash concentration in the straw compared to wood. Blend ash base-to-acid ratio also was not substantially affected above 50% straw concentration, remaining essentially constant at 0.3, compared to the wood ash base-to-acid ratio of 1.1. Initial deformation temperature, as measured by standard cone test of the blend ash, increased from a minimum of 880°C for a 75% straw blend to 1120°C for a 10% straw concentration in the blend.
István Valkai - One of the best experts on this subject based on the ideXlab platform.
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Investigation of Production of Motor Fuel Components on Heterogeneous Catalyst with Oligomerization
Topics in Catalysis, 2013Co-Authors: Eszter Kriván, István Valkai, Jeno HancsókAbstract:The production of high isoparaffin containing motor Fuels which comply with the changing needs and standards is a significant research area. Because of this type of hydrocarbons have numerous application, environmental and economical benefits. One of the possible productions for this type of hydrocarbons is oligomerization of light olefins followed by their hydrogenation. Based on our experimental results we established that the examined various catalytic systems containing acidic ion exchange resin catalyst are suitable for the flexible production of different motor Fuel Blending components (gasoline, middle distillate) with high conversion (92.4 %) and good selectivity in particular at the process parameters ( T : 130 °C, P : 30 bar, LHSV: 1.0 h^−1) we found favourable.
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the oligomerization of olefin hydrocarbons in light fcc naphtha on ion exchange resin catalyst
Chemical engineering transactions, 2012Co-Authors: Eszter Kriván, István Valkai, J HancsokAbstract:In our experimental work our aim was the investigation of the possibility to convert olefin hydrocarbons of a light FCC naphtha fraction with oligomerization. In this framework, we studied the production possibilities of higher carbon number isoolefin rich motor Fuel Blending components, with oligomerization of the C4-C6 olefin content of the feedstock on water-containing acidic ion exchange resin catalysts. From the studied catalysts the ion exchange resin showed the highest oligomerization activity: the conversion of the olefins was 90.9 % and the share of oligomer products was 29.0 %. After hydrogenation of the C8-C16 isoolefin mixture, the octane number of gasoline product is around 100, the JET product has high energy content and low crystallization point, the cetane number of gas oil product is high and it has a good CFPP (cold filter plugging point). So with these two catalytic steps valuable products can be produced from light olefin-containing refinery by-products.
D Salour - One of the best experts on this subject based on the ideXlab platform.
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control of in bed agglomeration by Fuel Blending in a pilot scale straw and wood Fueled afbc
Biomass & Bioenergy, 1993Co-Authors: D Salour, B M Jenkins, M Vafaei, Masoud KayhanianAbstract:Abstract Bed agglomeration in a pilot scale atmospheric fluidized bed combustor was controlled by Blending wood into rice straw in concentrations of 50% wood or more and stoichiometrically holding reaction temperature at or below 800°C. At higher straw concentrations, agglomeration of the bed occurred over run times inversely proportional to the straw concentration in the blend. Bed agglomeration was preceded by a characteristic decline in bed pressure drop most likely related to combustion air channeling through the bed. Blend ash composition was not substantially affected until straw concentration decreased to 50% or below because of the four-fold higher ash concentration in the straw compared to wood. Blend ash base-to-acid ratio also was not substantially affected above 50% straw concentration, remaining essentially constant at 0.3, compared to the wood ash base-to-acid ratio of 1.1. Initial deformation temperature, as measured by standard cone test of the blend ash, increased from a minimum of 880°C for a 75% straw blend to 1120°C for a 10% straw concentration in the blend.
