Due to the depletion of crude reserves and the increasing demand for clean hydrocarbon fuels the production of renewable materials-based fuels has emerged to solve at least partially this problem in the past decade and it is expected to continue [1,2]. Green fuels can be classified as naphtha, jet fuel, and diesel. In the case of green diesel, its increasing demand could reach 900 million tons by 2020 [3].

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Hydroconversion of Triglycerides into Green Liquid Fuels

Catalytic cracking of vegetable oil with metal oxides for biofuel production

Simultaneous deoxygenation, cracking and isomerization of palm kernel oil and palm olein over beta zeolite to produce biogasoline, green diesel and biojet-fuel

The production of renewable aviation fuel from waste cooking oil. Part I: Bio-alkane conversion through hydro-processing of oil

Synthesis of silver nanoparticle from X-ray film and its application in production of biofuel from jatropha oil

The application of biofuels has become more important in the whole world since the last decades. Intensive research has been started for the production of biofuels which can be applied in Diesel engines and has different chemical composition from the previously used ones. Among these fuels the most important one is biogasoil (normal and iso-paraffins) produced from triglycerides with catalytic hydrotreating (special hydrocracking). The aim of present study was to investigate the applicability of commercial NiMo/γ-Al2O3 catalyst for conversion of specially pretreated Hungarian sunflower oil to produce motor fuel components. The change in the hydrotreating activity of applied catalyst, the pathways of hydrodeoxigenation reactions and the effect of process parameters (T=300–360 °C, p=20–60 bar, LHSV=0.5–2.0 h-1, H2/sunflower oil volume ratio: 400 Nm3/m3) on the yield and composition of the products were also investigated. It was concluded that on the investigated NiMo/γ-Al2O3 catalyst products with relatively high (>50%) paraffin content (T=360–380 °C, p=60 bar, LHSV=0.5–1.0 h-1) could be produced. The yield of the produced target fraction was 50.7–54.5% at these advantageous process parameters. So it is necessary to separate and recirculate the heavy fraction. In case of every investigated process parameter C18-, C17-, C16- and C15 normal paraffins were formed, i.e. both the HDO and the decarboxylation/ decarbonylation reactions took place. The cetane number of the target fractions, are very high (>80, EN standard: ≥51), but the cold flow properties of this fraction are disadvantageous. To improve this disadvantageous property it is necessary to carry out selective isomerization of the target fraction.

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M. Krár

Papers

Fuel Purpose Hydrotreating of Vegetable Oil on NiMo/γ-Al2O3 Catalyst