Produce Low Aromatic Contents with Enhanced Cold Properties of Hydrotreated Renewable Diesel Using Pt/Alumina-Beta-Zeolite: Reaction Path Studied via Monoaromatic Model Compound

Shanmugam Palanisamy, Börje Sten Gevert, Pranav Sankaran and Kannan Kandasamy
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Shanmugam Palanisamy: Department of Chemical Engineering, Kongu Engineering College, Erode 638060, India
Börje Sten Gevert: Kempross AB, Larseredslyckor 14, 42539 Hisingskärra, Sweden
Pranav Sankaran: Department of Chemical Engineering, Kongu Engineering College, Erode 638060, India
Kannan Kandasamy: Department of Chemical Engineering, Kongu Engineering College, Erode 638060, India

Energies, 2019, vol. 12, issue 15, 1-15

Abstract: In this present work, Hydro-dearomatisation of toluene and hydro-isomerisation of n-hexadecane (n-C 16 ) in ultralow sulphur diesel (ULSD) using Pt-Cl/H-Beta and Pt/ H -Beta catalyst was investigated in a continuous down-flow trickle-bed reactor (DFTBR), and the physicochemical properties of products were studied. The catalytic effect on 40:60 wt% of H -beta-zeolite ( H -β) and binder–aluminahydrochlorite extruded was characterized in scanning electron microscopy, nitrogen adsorption and coke testing. The study showed that 80 to 95 wt% of middle distillates recovered in ULSD on elevated temperature between 230 and 270 °C at 5 MPa. With a higher residence time of feed, the middle distillate recovered with 2.2 v / v % of aromatics and −32 °C of cloud point. In the model compound investigation of toluene and n-C 16 , it was observed that absorption of aromatic ring inhibits the rate of isomerisation; particularly it reduces the yield of branching and rearrangement of n-C 16 . Also, Cl-incorporated H -β extrudate enhanced the ring saturation and suppressed the reaction path in oligomerisation and cyclisation of paraffin. This methodology achieved asingle-stage upgrading technique involved in the delivery of commercial diesel in the market with low cloud point and aromatic content.

Keywords: hydro-isomerisation; hydrocracking; dearomatisation; diesel; H -beta-zeolite (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
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