Behavior of Dolomites under Fluidized Bed Sorption-Enhanced Gasification Conditions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27240%2F25%3A10260091" target="_blank" >RIV/61989100:27240/25:10260091 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.acs.org/doi/10.1021/acs.iecr.4c04520" target="_blank" >https://pubs.acs.org/doi/10.1021/acs.iecr.4c04520</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.iecr.4c04520" target="_blank" >10.1021/acs.iecr.4c04520</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Behavior of Dolomites under Fluidized Bed Sorption-Enhanced Gasification Conditions

Popis výsledku v původním jazyce

This work investigates the behavior of dolomites during sorption-enhanced gasification in dual interconnected fluidized bed systems for the production of H2-rich syngas. Two sorbents, one of Italian origin, the other of Polish origin, with CaO content ranging from 60 to 63 wt %, and MgO content around 32-33 wt %, were subjected to calcination/carbonation cycles (10 cycles for each test) in a lab-scale apparatus. In particular, the temperature of the fluidized bed carbonation stage was varied between 600 and 700 degrees C, both in the absence and in the presence of water vapor. With an eye to the role of the operating conditions, for each material, the following aspects were investigated: CO2 capture capacity, fragmentation tendency, and elutriation phenomena upon surface wear. The discussion was then extended by recalling previous results obtained on a set of 6 limestones (rich in Ca) under the same operating conditions through a comparison analysis between the behavior of dolomites versus limestones. In particular, it was observed that steam is capable of positively influencing the dolomite behavior in terms of CO2 capture; the elutriation rate is markedly more relevant upon calcination than carbonation, negatively affected by the presence of steam, and less extensive for sorbents showing higher CO2 capture. Normalizing the CO2 capture on the CaO content, the performance of dolomites is comparable to that of limestones, although dolomites have a more fragile structure that increases their tendency to undergo fluidized bed fragmentation.

Název v anglickém jazyce

Behavior of Dolomites under Fluidized Bed Sorption-Enhanced Gasification Conditions

Popis výsledku anglicky

This work investigates the behavior of dolomites during sorption-enhanced gasification in dual interconnected fluidized bed systems for the production of H2-rich syngas. Two sorbents, one of Italian origin, the other of Polish origin, with CaO content ranging from 60 to 63 wt %, and MgO content around 32-33 wt %, were subjected to calcination/carbonation cycles (10 cycles for each test) in a lab-scale apparatus. In particular, the temperature of the fluidized bed carbonation stage was varied between 600 and 700 degrees C, both in the absence and in the presence of water vapor. With an eye to the role of the operating conditions, for each material, the following aspects were investigated: CO2 capture capacity, fragmentation tendency, and elutriation phenomena upon surface wear. The discussion was then extended by recalling previous results obtained on a set of 6 limestones (rich in Ca) under the same operating conditions through a comparison analysis between the behavior of dolomites versus limestones. In particular, it was observed that steam is capable of positively influencing the dolomite behavior in terms of CO2 capture; the elutriation rate is markedly more relevant upon calcination than carbonation, negatively affected by the presence of steam, and less extensive for sorbents showing higher CO2 capture. Normalizing the CO2 capture on the CaO content, the performance of dolomites is comparable to that of limestones, although dolomites have a more fragile structure that increases their tendency to undergo fluidized bed fragmentation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20704 - Energy and fuels

Projekt

—

Návaznosti

O - Projekt operacniho programu

Rok uplatnění

2025

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

1520-5045

Svazek periodika

64

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

5269-5279

Kód UT WoS článku

001433834300001

EID výsledku v databázi Scopus

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