Mathematical modeling of selectivity of Fischer-Tropsch process reactions during catalyst deactivation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F19%3A43917906" target="_blank" >RIV/60461373:22310/19:43917906 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.icct.cz/AngiologyKlon-ICCT/media/system/2019/ICCT-2019-Proceedings.pdf" target="_blank" >https://www.icct.cz/AngiologyKlon-ICCT/media/system/2019/ICCT-2019-Proceedings.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Mathematical modeling of selectivity of Fischer-Tropsch process reactions during catalyst deactivation

Popis výsledku v původním jazyce

The distribution of Fischer-Tropsch (FT) products is typically compared to the Anderson-Schulz-Flory (ASF) distribution with selectivity determined by alpha-parameter, which represents a chain growth probability. However, the experimentally obtained products distribution does not remain constant during a long-term experiment (490 hours) but varies in dependence on a FT catalyst deactivation. Since the accurate prediction of products distribution during one batch of FT catalyst is a crucial parameter for optimization of product separation conditions and subsequent upgrading, the evolution of products distribution in FT lab-scale unit (BIOENERGY 2020+ GmbH, Güssing, Austria) operating at steady state was studied. The experimental data were compared to simulation results obtained using mathematical model in Aspen Plus V10 software. The simulated products distribution is in line with experimental data and it showed an increase of the alpha-parameter together with a strong decrease of the FT reaction rate during the 490 hours experiment. The produced amount of longer hydrocarbons increased with time as a result of the alpha-parameter change, compensating the significant drop of the production rate. Therefore, the total obtained amount of products decreased only slightly during the experiment test run. In addition, the fastest catalyst deactivation rate was observed at the beginning of the experiment and declined over the duration of the long-term experiment.

Název v anglickém jazyce

Mathematical modeling of selectivity of Fischer-Tropsch process reactions during catalyst deactivation

Popis výsledku anglicky

The distribution of Fischer-Tropsch (FT) products is typically compared to the Anderson-Schulz-Flory (ASF) distribution with selectivity determined by alpha-parameter, which represents a chain growth probability. However, the experimentally obtained products distribution does not remain constant during a long-term experiment (490 hours) but varies in dependence on a FT catalyst deactivation. Since the accurate prediction of products distribution during one batch of FT catalyst is a crucial parameter for optimization of product separation conditions and subsequent upgrading, the evolution of products distribution in FT lab-scale unit (BIOENERGY 2020+ GmbH, Güssing, Austria) operating at steady state was studied. The experimental data were compared to simulation results obtained using mathematical model in Aspen Plus V10 software. The simulated products distribution is in line with experimental data and it showed an increase of the alpha-parameter together with a strong decrease of the FT reaction rate during the 490 hours experiment. The produced amount of longer hydrocarbons increased with time as a result of the alpha-parameter change, compensating the significant drop of the production rate. Therefore, the total obtained amount of products decreased only slightly during the experiment test run. In addition, the fastest catalyst deactivation rate was observed at the beginning of the experiment and declined over the duration of the long-term experiment.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

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Návaznosti

R - Projekt Ramcoveho programu EK

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the 7th International Conference on Chemical Technology

ISBN

978-80-88307-00-6

ISSN

2336-811X

e-ISSN

2336-8128

Počet stran výsledku

6

Strana od-do

197-202

Název nakladatele

Czech Society of Industrial Chemistry

Místo vydání

Prague

Místo konání akce

Mikulov

Datum konání akce

15. 4. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000515696600035