Effects of Pyrolysis Bio-Oils on Fuel Atomisation—A Review

Bio-oils produced by biomass pyrolysis are substantially different from those produced by petroleum-based fuels and biodiesel. However, they could serve as valuable alternatives to fossil fuels to achieve carbon neutral future. The literature review indicates that the current use of bio-oils in gas...

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Main Authors: Heena Panchasara, Nanjappa Ashwath
Format: Article
Language:English
Published: MDPI AG 2021-02-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/14/4/794
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author Heena Panchasara
Nanjappa Ashwath
author_facet Heena Panchasara
Nanjappa Ashwath
author_sort Heena Panchasara
collection DOAJ
description Bio-oils produced by biomass pyrolysis are substantially different from those produced by petroleum-based fuels and biodiesel. However, they could serve as valuable alternatives to fossil fuels to achieve carbon neutral future. The literature review indicates that the current use of bio-oils in gas turbines and compression-ignition (diesel) engines is limited due to problems associated with atomisation and combustion. The review also identifies the progress made in pyrolysis bio-oil spray combustion via standardisation of fuel properties, optimising atomisation and combustion, and understanding long-term reliability of engines. The key strategies that need to be adapted to efficiently atomise and combust bio-oils include, efficient atomisation techniques such as twin fluid atomisation, pressure atomisation and more advanced and novel effervescent atomisation, fuel and air preheating, flame stabilization using swrilers, and filtering the solid content from the pyrolysis oils. Once these strategies are implemented, bio-oils can enhance combustion efficiency and reduce greenhouse gas (GHG) emission. Overall, this study clearly indicates that pyrolysis bio-oils have the ability to substitute fossil fuels, but fuel injection problems need to be tackled in order to insure proper atomisation and combustion of the fuel.
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spelling doaj.art-3e5f49591b704066aeb57930b59eea402023-12-03T12:11:42ZengMDPI AGEnergies1996-10732021-02-0114479410.3390/en14040794Effects of Pyrolysis Bio-Oils on Fuel Atomisation—A ReviewHeena Panchasara0Nanjappa Ashwath1School of Engineering and Technology, Central Queensland University, Melbourne 3000, AustraliaSchool of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton 4701, AustraliaBio-oils produced by biomass pyrolysis are substantially different from those produced by petroleum-based fuels and biodiesel. However, they could serve as valuable alternatives to fossil fuels to achieve carbon neutral future. The literature review indicates that the current use of bio-oils in gas turbines and compression-ignition (diesel) engines is limited due to problems associated with atomisation and combustion. The review also identifies the progress made in pyrolysis bio-oil spray combustion via standardisation of fuel properties, optimising atomisation and combustion, and understanding long-term reliability of engines. The key strategies that need to be adapted to efficiently atomise and combust bio-oils include, efficient atomisation techniques such as twin fluid atomisation, pressure atomisation and more advanced and novel effervescent atomisation, fuel and air preheating, flame stabilization using swrilers, and filtering the solid content from the pyrolysis oils. Once these strategies are implemented, bio-oils can enhance combustion efficiency and reduce greenhouse gas (GHG) emission. Overall, this study clearly indicates that pyrolysis bio-oils have the ability to substitute fossil fuels, but fuel injection problems need to be tackled in order to insure proper atomisation and combustion of the fuel.https://www.mdpi.com/1996-1073/14/4/794liquid biofuelspyrolysis bio-oilsfast pyrolysisfuel atomisationcombustion emissionspressure atomisers
spellingShingle Heena Panchasara
Nanjappa Ashwath
Effects of Pyrolysis Bio-Oils on Fuel Atomisation—A Review
Energies
liquid biofuels
pyrolysis bio-oils
fast pyrolysis
fuel atomisation
combustion emissions
pressure atomisers
title Effects of Pyrolysis Bio-Oils on Fuel Atomisation—A Review
title_full Effects of Pyrolysis Bio-Oils on Fuel Atomisation—A Review
title_fullStr Effects of Pyrolysis Bio-Oils on Fuel Atomisation—A Review
title_full_unstemmed Effects of Pyrolysis Bio-Oils on Fuel Atomisation—A Review
title_short Effects of Pyrolysis Bio-Oils on Fuel Atomisation—A Review
title_sort effects of pyrolysis bio oils on fuel atomisation a review
topic liquid biofuels
pyrolysis bio-oils
fast pyrolysis
fuel atomisation
combustion emissions
pressure atomisers
url https://www.mdpi.com/1996-1073/14/4/794
work_keys_str_mv AT heenapanchasara effectsofpyrolysisbiooilsonfuelatomisationareview
AT nanjappaashwath effectsofpyrolysisbiooilsonfuelatomisationareview