Fluid catalytic co-processing of bio-oils with petroleum intermediates: Comparison of vapour phase low pressure hydrotreating and catalytic cracking as pretreatment

نویسندگان

چکیده

For co-processing of bio-oil and conventional fossil feed in existing refinery fluid catalytic cracking (FCC) units, little attention has been paid to the increased aromatics basic nitrogen content associated with introduction how it affects FCC performance. In this contribution, effect blending two bio-oils obtained from different treatment wheat-straw pyrolysis vapors atmospheric residue was tested using a microactivity testing unit (MAT). The catalysts used for vapor phase upgrading included i) Na/γ-Al2O3 deoxygenation catalyst, ii) Pt/TiO2 catalyst combination H2 atmosphere. oxygen both similar at ~ 7–8 wt%, but had lower total acid number (TAN) 5 mg KOH/g higher (BN) 0.7 wt% compared (15 KOH/g, 0.4 BN). processing upgraded blends MAT yields dry gas, CO, CO2, coke expense naphtha (decrease by 2.8 percentage points) decreased conversion 2.5 points. This is attributed high aromaticity bio-oils. degree saturation may explain its slightly (by ≤ 1 bio-oil. contribution provides important information operators interested oils biomass-derived elevated aromatics.

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ژورنال

عنوان ژورنال: Fuel

سال: 2021

ISSN: ['0016-2361', '1873-7153']

DOI: https://doi.org/10.1016/j.fuel.2021.121198