Evaluating refinery configurations for deriving sustainable aviation fuel from ethanol or syncrude

Petersen, Abdul M.; Chireshe, Farai; Okoro, Oseweuba Valentine; Görgens, Johann F.; Dyk, Johan Van

doi:10.1016/j.fuproc.2021.106879

Cited by 24 publications

(17 citation statements)

References 40 publications

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“…All pumps, turbines and compressors were modelled as isentropic units [39]. Finally, distillation processes were modelled using the RADFRAC model Aspen Plus ® , which facilitates rigorous energy and mass balance calculations and can be used to facilitate the separation of highly non-ideal liquid mixtures [40].…”

Section: Methodsmentioning

confidence: 99%

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Waste Apple Pomace Conversion to Acrylic Acid: Economic and Potential Environmental Impact Assessments

et al. 2022

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The global demand for acrylic acid (AA) is increasing due to its wide range of applications. Due to this growing demand, alternative AA production strategies must be explored to avoid the exacerbation of prevailing climate and global warming issues since current AA production strategies involve fossil resources. Investigations regarding alternative strategies for AA production therefore constitute an important research interest. The present study assesses waste apple pomace (WAP) as a feedstock for sustainable AA production. To undertake this assessment, process models based on two production pathways were designed, modelled and simulated in ASPEN plus® software. The two competing production pathways investigated included a process incorporating WAP conversion to lactic acid (LA) prior to LA dehydration to generate AA (denoted as the fermentation–dehydration, i.e., FD, pathway) and another process involving WAP conversion to propylene prior to propylene oxidation to generate AA (denoted as the thermochemical–fermentation–oxidation, i.e., TFO, pathway). Economic performance and potential environmental impact of the FD and TFO pathways were assessed using the metrics of minimum selling price (MSP) and potential environmental impacts per h (PEI/h). The study showed that the FD pathway presented an improved economic performance (MSP of AA: USD 1.17 per kg) compared to the economic performance (MSP of AA: USD 1.56 per kg) of the TFO pathway. Crucially, the TFO process was determined to present an improved environmental performance (2.07 kPEI/h) compared to the environmental performance of the FD process (8.72 kPEI/h). These observations suggested that the selection of the preferred AA production pathway or process will require a tradeoff between economic and environmental performance measures via the integration of a multicriteria decision assessment in future work.

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Section: Methodsmentioning

confidence: 99%

“…To determine the column design specifications, the design parameters (i.e., number of stages, reboiler duty, reflux ratio, etc.) were initially estimated using the Fenske-Underwood-Gilliland correlation model in Aspen Plus ® [39,41].…”

Section: Methodsmentioning

confidence: 99%

Waste Apple Pomace Conversion to Acrylic Acid: Economic and Potential Environmental Impact Assessments

et al. 2022

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“…T, R and yi represent the temperature in K, the universal gas constant (8.314 J/mol•K), the mole fraction vapour of the ith specie respectively. Furthermore, all pumps, turbines and compressors were modelled as isentropic units [41]. Finally, distillation processes were modelled using the RADFRAC model Aspen Plus®, which facilitates rigorous energy and mass balance calculations and can be used to facilitate the separation of highly nonideal liquid mixtures [42].…”

Section: Methodsmentioning

confidence: 99%

“…number of stages, reboiler duty, reflux ratio etc.) were estimated using the Fenske-Underwood-Gilliland correlation model in Aspen Plus® [41,43].…”

Section: Methodsmentioning

confidence: 99%

“…According to the well-established experimental approach employed in the literature [49], the hot water pre-treatment is undertaken at the temperature of 142.4 o C and pressure 1 atm with a 65 % sugar (C6 and C5) recovery achieved according to the reaction equations presented in Table S3 in the supplementary file A. To enhance process efficiency and energy self-sufficiency, onsite steam generation is achieved using the lignin fraction as a solid fuel [41]. The lignin separated is employed as a fuel for heat and electricity generation via a combined heat and power (CHP) plant, in accordance with the Rankine cycle as described in the literature [6].…”

Section: Process Descriptionmentioning

confidence: 99%

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Waste apple pomace conversion to acrylic acid: Economic and environmental assessment

Okoro

Alimoradi

Shavandi

2021

Preprint

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The global demand for acrylic acid (AA) is increasing due to its wide range of applications. Due to this growing demand, alternative AA production strategies must be explored to avoid the exacerbation of prevailing climate and global warming issues since current AA production strategies involve AA production using fossil resources. Investigations on alternative strategies for AA production therefore constitute an important research interest. The present study therefore assesses waste apple pomace (WAP) as a feedstock for the sustainable AA produc-tion. To undertake this assessment, process models, based on two production pathways were designed, modelled and simulated in ASPEN plus® software. The two competing production pathways investigated include a process incorporating WAP conversion to lactic acid (LA), prior to LA dehydration to generate AA (denoted as the FD pathway) and another process involving WAP conversion to propylene, prior to propylene oxidation to generate AA (denoted as the TFO pathway). Economic and environmental performances of the FD and TFO pathways were assessed via the minimum selling price (MSP) and potential environmental impacts per h (PEI/h) metrics. The study was able to show that the FD pathway presented an improved economic performance (MSP of AA: US $1.17 per kg) performance compared to the economic performance (MSP of AA: US $1.56 per kg) of the TFO pathway. Crucially, the TFO process was shown to present an improved environmental performance (2.07 kPEI/h) compared to the environmental performance of the FD process (8.72 kPEI/h). These observations sug-gests that the selection of the preferred AA production will require a trade-off between the performance measures, and the integration of a multi-criteria decision assessment in future work.

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Development and Up‐scaling of Iron‐based Catalysts for Fischer‐Tropsch Synthesis of Higher Alcohols

Medicus,

Mettke,

Merkel

et al. 2023

ChemCatChem

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For sustainable production of chemicals like hydrocarbons and oxygenates from renewable carbon sources and electricity Fischer‐Tropsch synthesis is focused in current research. Aiming for this purpose, the development of supported powdered and shaped catalysts for low‐temperature Fischer‐Tropsch synthesis of value‐added higher alcohols was addressed in this study. Promising support materials like α‐Al2O3, SiO2, ZrO2 and SiC were assessed and the influence of electrochemical promoters on product formation was investigated. The results show an outstanding promoting effect of lithium on conversion and alcohol selectivity. A beneficial synergistic effect occurred for the combination of 1 % Li and Cu each and could be exploited both for supported powdered and shaped catalysts. Furthermore, effects of surface, shape, porosity and Fe content on pellet catalysts were investigated. Exploiting the beneficial effects found, the first monometallic shaped Fe‐based catalyst ‑ outperforming the state‐of‐the‐art monometallic Fe powder catalysts in conversion and selectivity ‑ is presented.

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Evaluating refinery configurations for deriving sustainable aviation fuel from ethanol or syncrude

Cited by 24 publications

References 40 publications

Waste Apple Pomace Conversion to Acrylic Acid: Economic and Potential Environmental Impact Assessments

Waste Apple Pomace Conversion to Acrylic Acid: Economic and Potential Environmental Impact Assessments

Waste apple pomace conversion to acrylic acid: Economic and environmental assessment

Development and Up‐scaling of Iron‐based Catalysts for Fischer‐Tropsch Synthesis of Higher Alcohols

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