Emissions from a fast-pyrolysis bio-oil fired boiler: Comparison of health-related characteristics of emissions from bio-oil, fossil oil and wood

Sippula, Olli; Huttunen, Kati; Hokkinen, Jouni; Kärki, Sara; Suhonen, Heikki; Kajolinna, Tuula; Kortelainen, Miika; Karhunen, Tommi; Jalava, Pasi; Uski, Oskari; Yli‐Pirilä, Pasi; Hirvonen, Maija; Jokiniemi, Jorma

doi:10.1016/j.envpol.2019.02.086

Cited by 29 publications

(15 citation statements)

References 39 publications

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“…The rapid depletion rate of fossil fuels has made it inevitable for renewable energy sources to resolve global environmental issues and the contribution of fossil fuels to global warming and general climate change. Solid fuel biomass combustion are disadvantageous due to their low efficiencies and higher emissions, in particular smoke and particulate matter [3,4] as compared with liquid biofuels. When it comes to using liquid fuels, they are easier to transport (high density) and storage under controlled conditions as compared to solid fuels [5].…”

Section: Introductionmentioning

confidence: 99%

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

Panchasara

Ashwath

2021

Energies

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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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Section: Introductionmentioning

confidence: 99%

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

Panchasara

Ashwath

2021

Energies

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“…Bio-oil has a highly promising potential to be widely used, considering its advantages of renewability, CO 2 neutrality, transportability, relatively high energy density, and good secondary conversion performance. − Bio-oil can be utilized in different ways, which are summarized in Figure . There are several bio-oil applications which have already been implemented such as direct combustion for boilers, , diesel engines, gas turbines − and gravity stove . Few studies reported its direct use as transport fuel in diesel engine through emulsification , or microemulsification. , Because of its high energy density and environmentally benign nature, hydrogen is considered as an attractive fuel and energy carrier .…”

Section: Introductionmentioning

confidence: 99%

Review on Aging of Bio-Oil from Biomass Pyrolysis and Strategy to Slowing Aging

et al. 2021

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Bio-oil from biomass pyrolysis is a promising alternative and clean source of biofuels, chemicals, and materials. Its chemical composition, physical and chemical properties, and multiphase behavior change over time, because of aging, which significantly affects its storage, handling, transportation, upgrading, and application. This Review focuses on studying bio-oil aging, and its outlook, primarily covering the following four components: (1) the chemical composition, physical and chemical properties, and multiphase behavior of bio-oil;(2) the indicators for measuring the degree of aging and aging characteristics, including physical and chemical properties change during long-term and accelerated aging of bio-oil; (3) the aging mechanisms and kinetics emphasizing the reactions during the aging process and different kinetic models based on different aging indicators; (4) the potential approaches to slowing bio-oil aging. This Review presents highlights in developing aging mechanisms and kinetics that will allow the reader to have an in-depth understanding of the effect of aging on bio-oil properties and the approaches to improve the resistance of bio-oil aging.

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“…The presence of suspended solids and ash contained within untreated fast pyrolysis bio-oils can lead to numerous challenges during upgrading and utilization of the intermediate or fuel. Plugging/fouling, erosion and catalyst deactivation can occur when upgrading untreated FPBOs with high solids and ash content. , Furthermore, in addition to plugging/fouling, the occurrence of inconsistent atomization spray patterns, erosion/corrosion on hot combustion surfaces, elevated particulate emissions and increased aging in stored FPBOs can result from storage and utilization of these similar FPBOs. − …”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Fouling Remediation Strategies for Cross-Flow Microfiltration of Fast Pyrolysis Bio-Oil

Mazerolle

Bronson

Kruczek

2021

Ind. Eng. Chem. Res.

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Cross-flow microfiltration of fast pyrolysis bio-oil is a physical treatment pathway capable of reducing the filtered product's solids content to acceptable levels for fuel utilization and/or upgrading. However, the overall throughput of the process is hindered by the fouling that occurs on and/or within the filtration media over short operating periods. To improve the throughput from fast pyrolysis bio-oil cross-flow microfiltration, the use of offline and on-line cleaning techniques were experimentally evaluated. On-line cleaning strategies using permeate, solvent, and compressed air confirmed the reversibility of the accumulated fouling layer over a small (<10) number of cleaning cycles. The use of compressed air as a simple on-line cleaning strategy was further examined over extended operating times, including a total of 31 consecutive backflushing cycles. Compared to the reference case (no cleaning), on-line compressed air backflushing increased the overall throughput of low solids permeates by more than 100%. Ultimately, the demonstration of an on-line fouling remediation strategy for fast pyrolysis bio-oil cross-flow microfiltration increases the likelihood that it could be a viable treatment pathway for suspended solids and/or ash removal in pyrolysis liquids before end-use and/or upgrading of the biofuel.

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Emissions from a fast-pyrolysis bio-oil fired boiler: Comparison of health-related characteristics of emissions from bio-oil, fossil oil and wood

Cited by 29 publications

References 39 publications

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

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

Review on Aging of Bio-Oil from Biomass Pyrolysis and Strategy to Slowing Aging

Experimental Investigation of Fouling Remediation Strategies for Cross-Flow Microfiltration of Fast Pyrolysis Bio-Oil

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