Triglyceride zeoforming – A method for improving the low-temperature properties of second generation bio-components obtained from natural oils

Jęczmionek, Ł.; Porzycka-Semczuk, Krystyna

doi:10.1016/j.fuel.2013.05.012

Cited by 10 publications

(52 citation statements)

References 6 publications

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“…[1][2][3][4][5][6][7][8][9][10][11] There are many published studies describing the catalytic application of the zeolite ZSM-5 for the decomposition of vegetable oils to obtain the hydrocarbon fractions relevant for the boiling range of gasoline. 1 Additionally, the processes for the decomposition of rapeseed oil into hydrocarbons using various cracking catalysts have been broadly studied.…”

Section: Introductionmentioning

confidence: 99%

“…6 There are also known processes for the pyrolysis of natural oils into hydrocarbons using porous materials, such as activated carbon, which run at relatively high temperatures (> 500°C). 7 Compared to the studies described above [1][2][3][4][5][6][7] in the area of the implementation of porous materials for vegetable oils decomposition, triglycerides zeoforming is connected with the creation of precursors of hydrocarbon fuel biocomponents , which are formed in the hydroconversion stage of the process [8][9][10][11] .…”

Section: Introductionmentioning

confidence: 99%

“…12 Subsequent hydroconversion of modified (zeoformed) oil resulted in obtaining hydrocarbon fraction in which the n-paraffins still represent a significant part of the product, thereby maintaining a relatively high cetane number. [8][9][10][11] Iso-prafins and cyclic compounds obtained during zeoforming, have positive effect on selected properties (e.g. low temperature properties, density characteristics) 12, 13 of the obtained second generation biocomponents .…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies [8][9][10][11] present results on the positive impact of initial vegetable oil zeoforming on the low-temperature properties of the second generation of fuel biocomponents obtained by hydroconversion.…”

Section: Introductionmentioning

confidence: 99%

“…Several studies 8,9,11 describe experiments with fresh rapeseed oil. In the paper 10 the utilisation of waste rapeseed oil (used previously for pork frying) was described.…”

Section: Introductionmentioning

confidence: 99%

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Zeoforming of Triglycerides Can Improve Some Properties of Hydrorefined Vegetable Oil Biocomponents

et al. 2014

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Rapeseed vegetable oil was initially zeoformed in the temperature range of 200°Cto 300°C and at a pressure of 1.7 MPa using catalyst containing ZSM-5, and the obtained zeoformates were subsequently converted into hydrocarbons (HVO: hydrorefined vegetable oil) through the process of hydroconversion. The resulting hydroraffinates (HVO fuel biocomponents) contained: n-paraffins, iso-paraffins and up to 15 % of aromatic compounds. It has been established that hydroraffinates containing aromatic compounds have good lowtemperature properties (cold filter plugging point (CFPP) of approximately -12°C) and a density of 825 kg/m 3 . The hydroraffinate obtained over the catalyst at the highest applied temperature (300°C) was characterised by a decreased initial boiling point of distillation (IBP) of 174°C (the IBP for the non-zeoformed oil hydroraffinate was 284°C) and an increased distillation final boiling point (the FBP) of approximately 379°C, which was higher than that of the nonhydroraffinate (337°C). Investigation of the obtained hydroraffinate properties led to the conclusion that the preliminary zeoforming process may cause the coupling (oligomerisation) of fatty acid chains and the creation of aromatic structures containing aliphatic functional groups.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Several studies 8,9,11 describe experiments with fresh rapeseed oil. In the paper 10 the utilisation of waste rapeseed oil (used previously for pork frying) was described.…”

Section: Introductionmentioning

confidence: 99%

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Zeoforming of Triglycerides Can Improve Some Properties of Hydrorefined Vegetable Oil Biocomponents

et al. 2014

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Hydroconversion of Vegetable Oils Isomerized over ZSM-5: Composition and Properties of Hydroraffinates

Jęczmionek

Krasodomski

2015

Energy Fuels

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Three vegetable oils (rapeseed oil, palm oil, and soybean oil) were isomerized (the so-called zeoforming process) using two different ZSM-5 catalysts (A or B) at a constant temperature (300 °C) and liquid hourly space velocity (LHSV) (1.0 h −1 ) and variable pressure (1.7, 2.5, or 4.0 MPa). The obtained isomerized zeoformates were hydrotreated under constant conditions (temperature, 340 °C; LHSV, 0.5 h −1 ; pressure, 4.5 MPa; and hydrogen/feed ratio, 1500 Nm 3 /m 3 ). The obtained hydroraffinates exhibited diverse contents of n-paraffins (24−83 wt %), isoparaffins (reaching greater than 50 wt %), aromatics (up to 15.1 wt %), and possibly compounds with alkyl naphthene structures. Hydroraffinates containing high aromatic contents also showed increased final boiling points (FBPs) of distillation, which was most likely related to the oligomerization reactions of fatty acids. The increase in pressure during the zeoforming process reduces the formation of aromatics and isoparaffins. Moreover, under the same temperature and pressure conditions, the zeoforming reactions of saturated fatty acids were more difficult, resulting in smaller yields of isoparaffins and aromatics in the hydroraffinates.

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Trace Elements in Vegetable Oils after Hydroconversion into Advanced-Generation Biocomponents

et al. 2017

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Direct hydroconversion of vegetable oils (by a one-stage process) and hydroconversion of vegetable oil zeoformates (by a two-stage process) lead to hydroraffinates that contain trace elements. The concentrations of these trace elements must be below the inductively coupled plasma optical emission spectrometry determination limit, in accordance with the recommendations and requirements specified in the relevant legislation (Worldwide Fuel Charter). In this work, it was found that some trace elements (Na, Ca, Mg, and P) are deposited on the catalyst surface during the initial zeoforming of vegetable oils. At the same time, other ions (Al) can be removed by elution from the surface of the zeolite catalyst. During hydroconversion, most of the trace elements present in vegetable oils and zeoformates pass into the aqueous phase.

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Triglyceride zeoforming – A method for improving the low-temperature properties of second generation bio-components obtained from natural oils

Cited by 10 publications

References 6 publications

Zeoforming of Triglycerides Can Improve Some Properties of Hydrorefined Vegetable Oil Biocomponents

Zeoforming of Triglycerides Can Improve Some Properties of Hydrorefined Vegetable Oil Biocomponents

Hydroconversion of Vegetable Oils Isomerized over ZSM-5: Composition and Properties of Hydroraffinates

Trace Elements in Vegetable Oils after Hydroconversion into Advanced-Generation Biocomponents

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