Fuel characterisation, engine performance, combustion and exhaust emissions with a new renewable Licella biofuel

Nabi, Nurun; Rahman, M. F.; Jahirul, M.I.; Hossain, Farhad M.; Brooks, Peter; Rowlands, William N.; Tulloch, John; Ristovski, Zoran; Brown, Richard J.

doi:10.1016/j.enconman.2015.02.085

Cited by 75 publications

(63 citation statements)

References 30 publications

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“…4(a) shows the variation under full engine load with a wide open throttle. The heating value, which is the amount of heat energy released by burning a unit quantity of the fuel, could be the reason of the variation [19]. This value decreases by increasing the oxygen content of the fuels [20] as shown in Table 2.…”

Section: Power and Mean Effective Pressurementioning

confidence: 98%

The effect of triacetin as a fuel additive to waste cooking biodiesel on engine performance and exhaust emissions

Zare

Nabi

Bodisco

et al. 2016

Fuel

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114

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h i g h l i g h t sOxygen ratio was used instead of the equivalence ratio. Oxygen ratio decreases with engine load, but increases with engine speed. IMEP, BMEP, friction power, CO 2 , HC, PM and PN decreased with oxygenated fuels. BSFC, BTE and NOx increased with oxygenated fuels. Accumulation mode count median diameter decreased with oxygenated fuels. a b s t r a c tThis study investigates the effect of oxygenated fuels on engine performance and exhaust emission under a custom cycle using a fully instrumented 6-cylinder turbocharged diesel engine with a common rail injection system. A range of oxygenated fuels based on waste cooking biodiesel with triacetin as an oxygenated additive were studied. The oxygen ratio was used instead of the equivalence ratio, or air to fuel ratio, to better explain the phenomena observed during combustion. It was found that the increased oxygen ratio was associated with an increase in the friction mean effective pressure, brake specific fuel consumption, CO, HC and PN. On the other hand, mechanical efficiency, brake thermal efficiency, CO 2 , NOx and PM decreased with oxygen ratio. Increasing the oxygen content of the fuel was associated with a decrease in indicated power, brake power, indicated mean effective pressure, brake mean effective pressure, friction power, blow-by, CO 2 , CO (at higher loads), HC, PM and PN. On the other hand, the brake specific fuel consumption, brake thermal efficiency and NOx increased by using the oxygenated fuels. Also, by increasing the oxygen content, the accumulation mode count median diameter moved toward the smaller particle sizes. In addition to the oxygen content of fuel, the other physical and chemical properties of the fuels were used to interpret the behavior of the engine.

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Section: Power and Mean Effective Pressurementioning

confidence: 98%

The effect of triacetin as a fuel additive to waste cooking biodiesel on engine performance and exhaust emissions

Zare

Nabi

Bodisco

et al. 2016

Fuel

Self Cite

114

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“…Companies such as Licella (North Sydney, New South Wales, Australia), Muradel Pty Ltd. (Whyalla Barson, South Australia, Australia), Southern Oil Refining (Bomen, New South Wales, Australia), Steeper Energy ApS (Aalborg, Jutland, Denmark) and Genifuel Corporation (Salt Lake City, UT, USA) are such examples. Licella has developed a catalytic HTL technology, called Cat-HTR TM , with a pilot plant at Somersby, Australia, capable of processing 7500 tonnes of slurry per year [32]. They have set up two joint ventures with Canfor (Vancouver, British Columbia, Canada) and one with Neste Corporation (Espoo, Uusimaa, Finland) and ReNew ELP (Redcar, Middlesbrough, UK) to build demonstration plants based on Cat-HTR TM technology for processing forest residues and plastic wastes respectively [33].…”

Section: Introductionmentioning

confidence: 99%

Continuous Hydrothermal Liquefaction of Biomass in a Novel Pilot Plant with Heat Recovery and Hydraulic Oscillation

et al. 2018

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Hydrothermal liquefaction (HTL) is regarded as a promising technology for the production of biofuels from biomass and wastes. As such, there is a drive towards continuous-flow processing systems to aid process scale-up and eventually commercialization. The current study presents results from a novel pilot-scale HTL reactor with a feed capacity of up to 100 L/h and a process volume of approximately 20 L. The pilot plant employs a heat exchanger for heat recovery and a novel hydraulic oscillation system to increase the turbulence in the tubular reactor. The energy grass Miscanthus and the microalgae Spirulina, both representing advanced dedicated energy crops, as well as sewage sludge as high-potential waste stream were selected to assess the reactor performance. Biomass slurries with up to 16 wt% dry matter content were successfully processed. The heat recovery of the heat exchanger is found to increase with reactor run time, reaching 80% within 5–6 h of operation. The hydraulic oscillation system is shown to improve mixing and enhance heat transfer. Bio-crudes with average yields of 26 wt%, 33 wt% and 25 wt% were produced from Miscanthus, Spirulina and sewage sludge, respectively. The yields also appeared to increase with reactor run time. Bio-crude from HTL of Spirulina was mainly composed of palmitic acid, glycerol, heptadecane and linolelaidic acid, while biocrude from sewage sludge contained mainly palmitic acid, oleic acid and stearic acid. In contrast, biocrude from HTL of Miscanthus consisted of a large number of different phenolics. An energetic comparison between the three feedstocks revealed a thermal efficiency of 47%, 47% and 33% and energy return on investment (EROI) of 2.8, 3.3 and 0.5 for HTL of Miscanthus, Spirulina and sewage sludge, respectively.

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“…These properties make HTL bio-crude difficult to use as transportation fuels, apart from marine applications. Nabi et al [37] blended wood powder HTL bio-crude with conventional diesel fuel and studied fuel properties, emissions, and engine performance. The investigation concluded that the blended fuel doesn't cause significant changes in engine performance.…”

Section: Introductionmentioning

confidence: 99%

A Review of Hydrothermal Liquefaction Bio-Crude Properties and Prospects for Upgrading to Transportation Fuels

2015

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Hydrothermal liquefaction (HTL) presents a viable route for converting a vast range of materials into liquid fuel, without the need for pre-drying. Currently, HTL studies produce bio-crude with properties that fall short of diesel or biodiesel standards. Upgrading bio-crude improves the physical and chemical properties to produce a fuel corresponding to diesel or biodiesel. Properties such as viscosity, density, heating value, oxygen, nitrogen and sulphur content, and chemical composition can be modified towards meeting fuel standards using strategies such as solvent extraction, distillation, hydrodeoxygenation and catalytic cracking. This article presents a review of the upgrading technologies available, and how they might be used to make HTL bio-crude into a transportation fuel that meets current fuel property standards.

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Fuel characterisation, engine performance, combustion and exhaust emissions with a new renewable Licella biofuel

Cited by 75 publications

References 30 publications

The effect of triacetin as a fuel additive to waste cooking biodiesel on engine performance and exhaust emissions

The effect of triacetin as a fuel additive to waste cooking biodiesel on engine performance and exhaust emissions

Continuous Hydrothermal Liquefaction of Biomass in a Novel Pilot Plant with Heat Recovery and Hydraulic Oscillation

A Review of Hydrothermal Liquefaction Bio-Crude Properties and Prospects for Upgrading to Transportation Fuels

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