Modeling Condensed Mode Operation for Ethylene Polymerization: Part I. Thermodynamics of Sorption

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F17%3A43914164" target="_blank" >RIV/60461373:22340/17:43914164 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1021/acs.iecr.6b04288" target="_blank" >http://dx.doi.org/10.1021/acs.iecr.6b04288</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.iecr.6b04288" target="_blank" >10.1021/acs.iecr.6b04288</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Modeling Condensed Mode Operation for Ethylene Polymerization: Part I. Thermodynamics of Sorption

Popis výsledku v původním jazyce

A process model based on the thermodynamic models of Sanchez Lacombe and PC-SAFT EoS is developed to simulate and analyze the impact of vaporized n-hexane as an induced condensing agent on the rate of gas phase ethylene polymerization on supported catalyst. The simulation results of the process model indicate that the cosolubility phenomenon (i.e., the enhancement in the equilibrium concentration of ethylene in the amorphous phase of polyethylene in the presence of n-hexane) cannot be the sole reason for the experimentally observed increase in the polymerization rate seen over the entire duration of reaction. At the beginning, the rate of ethylene polymerization is enhanced much more strongly than would be expected simply from the cosolubility effect alone. However, as the reaction proceeds, the enhancement magnitude gradually decreases and reaches a steady-state value corresponding to the promotion magnitude in the equilibrium concentration of ethylene predicted by the two thermodynamic models.

Název v anglickém jazyce

Modeling Condensed Mode Operation for Ethylene Polymerization: Part I. Thermodynamics of Sorption

Popis výsledku anglicky

A process model based on the thermodynamic models of Sanchez Lacombe and PC-SAFT EoS is developed to simulate and analyze the impact of vaporized n-hexane as an induced condensing agent on the rate of gas phase ethylene polymerization on supported catalyst. The simulation results of the process model indicate that the cosolubility phenomenon (i.e., the enhancement in the equilibrium concentration of ethylene in the amorphous phase of polyethylene in the presence of n-hexane) cannot be the sole reason for the experimentally observed increase in the polymerization rate seen over the entire duration of reaction. At the beginning, the rate of ethylene polymerization is enhanced much more strongly than would be expected simply from the cosolubility effect alone. However, as the reaction proceeds, the enhancement magnitude gradually decreases and reaches a steady-state value corresponding to the promotion magnitude in the equilibrium concentration of ethylene predicted by the two thermodynamic models.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/GA16-07898S" target="_blank" >GA16-07898S: Aglomerace částic polyolefinů studovaná na meso-měřítku</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Industrial and Engineering Chemistry Research

ISSN

0888-5885

e-ISSN

—

Svazek periodika

56

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

18

Strana od-do

1168-1185

Kód UT WoS článku

000393848700005

EID výsledku v databázi Scopus

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