Process integration and life cycle assessment of ethane thermal cracking, carbon capture, green hydrogen, CO2 hydrogenation and methanol to olefins

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F26%3A0201299" target="_blank" >RIV/00216305:26210/26:0201299 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/abs/pii/S2213138824005587?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/abs/pii/S2213138824005587?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.seta.2024.104162" target="_blank" >10.1016/j.seta.2024.104162</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Process integration and life cycle assessment of ethane thermal cracking, carbon capture, green hydrogen, CO2 hydrogenation and methanol to olefins

Popis výsledku v původním jazyce

The olefins production relies on thermal cracking, which emits significant greenhouse gas. This study proposed a novel clean olefins production process, which utilizes cracked hydrogen from ethane cracking, to converted captured CO2 from flue gas into methanol and finally to produce olefins. A real industrial plant with production rates of 819200 t/y of ethylene and 77520 t/y of propylene is selected for case study. The proposed processes are simulated in Aspen Plus, with consideration of heat integration. By generating two optimal heat exchanger networks for high-capacity and low-capacity operations scenarios, increased heat recovery of 35.11 MW and 29.33 MW can be achieved compared to the base cases. This results in an improvement in process energy efficiency through effective heat integration between the ethylene, CCS, and MTO processes. The life cycle assessment shows that all cracked hydrogen can convert 70 % CO2 from flue gas. In this scenario, the global warming potential (GWP) is 1.64 kg CO2 eq/kg of olefins, slightly higher than demonstration industrial plant (1.53). If 85 % of CO2 is converted with support of electrolyzer and photovoltaic power, although the GWP during production process decreases to 1.47, the manufacture of electrolyzer leads to significant emission and which is undesirable.

Název v anglickém jazyce

Process integration and life cycle assessment of ethane thermal cracking, carbon capture, green hydrogen, CO2 hydrogenation and methanol to olefins

Popis výsledku anglicky

The olefins production relies on thermal cracking, which emits significant greenhouse gas. This study proposed a novel clean olefins production process, which utilizes cracked hydrogen from ethane cracking, to converted captured CO2 from flue gas into methanol and finally to produce olefins. A real industrial plant with production rates of 819200 t/y of ethylene and 77520 t/y of propylene is selected for case study. The proposed processes are simulated in Aspen Plus, with consideration of heat integration. By generating two optimal heat exchanger networks for high-capacity and low-capacity operations scenarios, increased heat recovery of 35.11 MW and 29.33 MW can be achieved compared to the base cases. This results in an improvement in process energy efficiency through effective heat integration between the ethylene, CCS, and MTO processes. The life cycle assessment shows that all cracked hydrogen can convert 70 % CO2 from flue gas. In this scenario, the global warming potential (GWP) is 1.64 kg CO2 eq/kg of olefins, slightly higher than demonstration industrial plant (1.53). If 85 % of CO2 is converted with support of electrolyzer and photovoltaic power, although the GWP during production process decreases to 1.47, the manufacture of electrolyzer leads to significant emission and which is undesirable.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Sustainable Energy Technologies and Assessments

ISSN

2213-1388

e-ISSN

2213-1396

Svazek periodika

74

Číslo periodika v rámci svazku

104162

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

—

Kód UT WoS článku

001411176500001

EID výsledku v databázi Scopus

2-s2.0-85214298575