Diesel production by fast pyrolysis of Miscanthus giganteus, well-to-pump analysis using the greet model

In this paper ?well-to-pump? environmental analysis of pyrolytic diesel from Miscanthus gigantheus is performed. The average annual yield of Miscanthus from III-V year of cultivation on 1 ha of chernozem soil in Serbia (23.5 t) is considered as an input for the process. Two pyrolytic diesel pathways...

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Bibliographic Details
Published in:Thermal science 2019, Vol.23 (1), p.365-378
Main Authors: Peric, Milica, Komatina, Mirko, Antonijevic, Dragi, Bugarski, Branko, Dzeletovic, Zeljko
Format: Article
Language:English
Subjects:
Acidification
Cultivation
Diesel fuels
Electricity consumption
Fossil fuels
Global warming
Hydrogen production
Natural gas
Particulate emissions
Pollutants
Power consumption
Pyrolysis
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Summary:In this paper ?well-to-pump? environmental analysis of pyrolytic diesel from Miscanthus gigantheus is performed. The average annual yield of Miscanthus from III-V year of cultivation on 1 ha of chernozem soil in Serbia (23.5 t) is considered as an input for the process. Two pyrolytic diesel pathways are considered: distributed pyrolytic pathway with external hydrogen production (from natural gas) and integrated pyrolytic pathway with internal hydrogen production (from pyrolytic oil). and are compared to a conventionally produced diesel pathway. The results of the analysis reveal that integrated-internal pyrolytic diesel pathway has lowest resources consumption and lowest pollutant emissions. Compared to conventionally produced diesel, integrated-internal pyrolysis pathway consumes 80% less of fossil fuels, and 92% more of renewables, has 90% lower global warming potential, 30% lower terrestrial acidification potential but 38% higher particulate matter formation potential. Compared to the distributed-external pathway, 88% less fossil fuels, and 36% less renewables are consumed in the integrated-internal pathway, global warming potential is 97% lower, terrestrial acidification is 20% lower, and particulate matter formation is 49% lower. Nevertheless, this pathway has high coal and hydroelectrical power consumption due to electricity production and high emissions of particulate matter, CO2, SOx, and N2O. Another drawback of this production pathway is the low yield of diesel obtained (38% lower than in distributed-external pathway). With this regard, it is still hard to designate production of diesel from fast pyrolysis of Miscanthus as a more environmentally friendly replacement of the conventional production diesel pathway. nema
ISSN:0354-9836
2334-7163
DOI:10.2298/TSCI171215113P