Phase separation of bio-oil produced by co-pyrolysis of corn cobs and polypropylene

2017 International Conference on New Energy and Future Energy System

Supramono, D.^1 ; Julianto^1 ; Haqqyana^1 ; Setiadi, H.^1 ; Nasikin, M.^1

Department of Chemical Engineering, Faculty of Engineering, Universitas Indonesia, Depok

16424, Indonesia^1

关键词: Bio-oil yield;    Biomass plastics;    Low heating values;    Nitrogen injection;    Non-polar phase;    Oxygenated compounds;    Stirred tank reactors;    Synergistic effect;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/93/1/012072/pdf
DOI  :  10.1088/1755-1315/93/1/012072

来源: IOP

【 摘 要 】

In co-pyrolysis of biomass-plastics, bio-oil produced contains both oxygenated and non-oxygenated compounds. High oxygen composition is responsible for instability and low heating value of bio-oil and high acid content for corrosiveness. Aims of the present work are to evaluate possibilities of achieving phase separation between oxygenated and non-oxygenated compounds in bio-oil using a proposed stirred tank reactor and to achieve synergistic effects on bio-oil yield and non-oxygenated compound layer yield. Separation of bio-oil into two layers, i.e. that containing oxygenated compounds (polar phase) and non-oxygenated compounds (non-polar phase) is important to obtain pure non-polar phase ready for the next processing of hydrogenation and used directly as bio-fuel. There has been no research work on co-pyrolysis of biomass-plastic considering possibility of phase separation of bio-oil. The present work is proposing a stirred tank reactor for co-pyrolysis with nitrogen injection, which is capable of tailoring co-pyrolysis conditions leading to low viscosity and viscosity asymmetry, which induce phase separation between polar phase and non-polar phase. The proposed reactor is capable of generating synergistic effect on bio-oil and non-polar yields as the composition of PP in feed is more than 25% weight in which non-polar layers contain only alkanes, alkenes, cycloalkanes and cycloalkenes.