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01-06-2015 | Original Article | Issue 2/2015

Biomass Conversion and Biorefinery 2/2015

Catalytic upgrading of crude tall oil into a paraffin-rich liquid

Journal:
Biomass Conversion and Biorefinery > Issue 2/2015
Authors:
Jinto M. Anthonykutty, Juha Linnekoski, Ali Harlin, Antero Laitinen, Juha Lehtonen
Important notes

Electronic supplementary material

The online version of this article (doi:10.​1007/​s13399-014-0132-8) contains supplementary material, which is available to authorized users.

Abstract

Catalytic upgrading via hydrotreatment is an essential method to produce paraffin-range renewable feedstocks from bio-derived oils. This research approach studies the catalytic hydrotreating of crude tall oil (CTO) over a sulfided NiMo catalyst under industrial-relevant conditions in order to produce hydrocarbon fraction, a steam cracker feed with maximum amount of paraffins and high degree of deoxygenation. Initial activity of the catalyst (6 h of time on stream) has been investigated, and we report that hydrotreating experiments at most favorable tested conditions (weight hourly space velocity, WHSV = 1 h−1 and T = 350–400 °C) produces hydrocarbon fraction with 45 wt% of paraffins (n-alkanes + i-alkanes). The highest degree of deoxygenation (91 %) was achieved at WHSV = 1 h−1 and T = 350 °C. Furthermore, the potential of hydrotreated CTO for steam cracking applications has been assessed in this study in view of the achieved product distribution and degree of deoxygenation from the hydrotreating of CTO.

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