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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20704 - Energy and fuels

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

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

Name of the periodical

Sustainable Energy Technologies and Assessments

ISSN

2213-1388

e-ISSN

2213-1396

Volume of the periodical

74

Issue of the periodical within the volume

104162

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

12

Pages from-to

—

UT code for WoS article

001411176500001

EID of the result in the Scopus database

2-s2.0-85214298575