ASPEN PLUS MODELLING SIMULATION AND TECHNO-ECONOMIC STUDY OF CATALYTIC AND NON-CATALYTIC FAST PYROLYSIS OF OLIVE MILL WASTEWATER SLUDGE IN A FLUIDIZED BED REACTOR

Modelling and simulation of catalytic and non-catalytic fast pyrolysis of olive mill waste water sludge (OMWS) in a fluidized bed reactor for production of bio-oil is developed using Aspen plus software. Pyrolysis is modeled with a global reaction taking into account the overall reaction kinetics me...

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Bibliographic Details
Published in:International journal of energy, environment, economics environment, economics, 2019-05, Vol.27 (3), p.155-186
Main Authors: Khan, Muhammad Shoaib Ahmed, Grioui, Najla, Halouani, Kamel, Donnot, André, Benelmir, Riad
Format: Article
Language:English
Subjects:
Biogas
Biomass
Catalysts
Cellulose
Decomposition
Economic analysis
Economic models
Electric power
Energy
Energy efficiency
Experiments
Fluidized bed reactors
Fluidized beds
Food industries wastewaters
Food waste
Gases
Gasoline
Lignin
Modelling
Nitrogen
Nuclear fuels
Oil
Oil recovery
Operating costs
Pyrolysis
Raw materials
Reaction kinetics
Reactors
Red mud
Residuals
Sensitivity analysis
Simulation
Sludge
Taxation
Temperature
Wastewater
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Summary:Modelling and simulation of catalytic and non-catalytic fast pyrolysis of olive mill waste water sludge (OMWS) in a fluidized bed reactor for production of bio-oil is developed using Aspen plus software. Pyrolysis is modeled with a global reaction taking into account the overall reaction kinetics measured experimentally. Two pyrolysis schemes are effectively modeled in Aspen Plus; one without catalyst and the other with red mud as catalyst. The fast pyrolysis takes place at three different temperatures 400, 450 and 500°C. Maximum bio-oil yield is obtained at 450°C for non-catalytic and 400°C for catalytic fast pyrolysis. Simulation results show a good agreement with experimental results with an absolute average deviation of 2.78% and 3.54% for non-catalytic and catalytic fast pyrolysis respectively. Techno-economic analysis of catalytic fast pyrolysis for a plant capacity of 100 tonnes/day wet biomass (93 tonnes/day dry biomass) indicates that the total project investment is €17.9 million and operating cost of €4.9 millions which determines the minimum fuel selling price of bio-oil to be €3.02/gallon gasoline equivalent. The energy efficiency of plant is estimated to be 52.9% and sensitivity analysis shows that minimum fuel selling price varies significantly with variation in income tax, rate of return and fuel yield.
ISSN:1054-853X