Value added hydrocarbons from distilled tall oil via hydrotreating over a commercial NiMo catalyst

Jinto Manjaly Anthonykutty (Corresponding Author), K.M. Van Geem, R. De Bruycker, Juha Linnekoski, Antero Laitinen, J. Räsänen, Arli Harlin, J. Lehtonen

Research output: Contribution to journalArticleScientificpeer-review

18 Citations (Scopus)

Abstract

The activity of a commercial NiMo hydrotreating catalyst was investigated to convert distilled tall oil (DTO), a byproduct of the pulp and paper industry, into feedstocks for the production of base chemicals with reduced oxygen content. The experiments were conducted in a fixed bed continuous flow reactor covering a wide temperature range (325–450 °C). Hydrotreating of DTO resulted in the formation of a hydrocarbon fraction consisting of up to ∼50 wt % nC17+C18 paraffins. Comprehensive 2D GC and GC–MS analysis shows that the resin acids in DTO are converted at temperatures above 400 °C to cycloalkanes and aromatics. However, at these temperatures the yield of nC17+C18 hydrocarbons irrespective of space time is drastically reduced because of cracking reactions that produce aromatics. The commercial NiMo catalyst was not deactivated during extended on-stream tests of more than 30 h. Modeling the steam cracking of the highly paraffinic liquid obtained during hydrotreatment of DTO at different process conditions indicates high ethylene yields (>32 wt %).
Original languageEnglish
Pages (from-to)10114-10125
Number of pages11
JournalIndustrial & Engineering Chemistry Research
Volume52
Issue number30
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

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