Experimental and simulation study of CO2 breakthrough curves in a fixed-bed adsorption process

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F22%3A43923953" target="_blank" >RIV/60461373:22320/22:43923953 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/22:00359231

Výsledek na webu

<a href="https://ojs.cvut.cz/ojs/index.php/ap/article/view/7821/6383" target="_blank" >https://ojs.cvut.cz/ojs/index.php/ap/article/view/7821/6383</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/AP.2022.62.0370" target="_blank" >10.14311/AP.2022.62.0370</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental and simulation study of CO2 breakthrough curves in a fixed-bed adsorption process

Popis výsledku v původním jazyce

This paper focuses on the laboratory experiments of low-temperature adsorption of CO2 at elevated pressure and on the validation of our mathematical model with the data obtained. The numerical approach uses fitting of adsorption isotherm parameters and sensitivity analysis of parameters influencing the breakthrough curve shape and onset time. We first evaluate the results of breakthrough experiments for zeolite 13X. Then, we use the results obtained to design a dynamic mathematical model to predict the breakthrough curve profile. Experimental results show that zeolite 13X possesses high adsorption capacities (over 10 % of its weight at adsorption temperatures of 293 K and below), as expected. The mathematical simulation was accurate at predicting the breakthrough onset time; however, this prediction accuracy declined with the outlet CO2 concentration exceeding 75 %, which is discussed. The sensitivity analysis indicated that the choice of different estimates of mass transport and bed porosity, as well as the choice of numerical scheme, can lead to a more accurate prediction, but the same set of parameters is not suitable for all process conditions.

Název v anglickém jazyce

Experimental and simulation study of CO2 breakthrough curves in a fixed-bed adsorption process

Popis výsledku anglicky

This paper focuses on the laboratory experiments of low-temperature adsorption of CO2 at elevated pressure and on the validation of our mathematical model with the data obtained. The numerical approach uses fitting of adsorption isotherm parameters and sensitivity analysis of parameters influencing the breakthrough curve shape and onset time. We first evaluate the results of breakthrough experiments for zeolite 13X. Then, we use the results obtained to design a dynamic mathematical model to predict the breakthrough curve profile. Experimental results show that zeolite 13X possesses high adsorption capacities (over 10 % of its weight at adsorption temperatures of 293 K and below), as expected. The mathematical simulation was accurate at predicting the breakthrough onset time; however, this prediction accuracy declined with the outlet CO2 concentration exceeding 75 %, which is discussed. The sensitivity analysis indicated that the choice of different estimates of mass transport and bed porosity, as well as the choice of numerical scheme, can lead to a more accurate prediction, but the same set of parameters is not suitable for all process conditions.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

<a href="/cs/project/TK03030167" target="_blank" >TK03030167: Nízkoemisní technologie energetického využití biomasy a alternativních paliv</a><br>

Návaznosti

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

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Acta Polytechnica

ISSN

1210-2709

e-ISSN

1805-2363

Svazek periodika

62

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

16

Strana od-do

370-385

Kód UT WoS článku

000828107300005

EID výsledku v databázi Scopus

2-s2.0-85146478048