Preparation and pipeline transport of CO2 as a hydrate slurry - Modelling and techno-economic analysis

• Type: Article in International Scientific Journal
• Date: 2024

Authors

Fernandes, IS (Author) FEUP; Domingos, MG (Author) Other; Costa, MF (Author) Other; Ricardo J. Santos (Author) FEUP; José Carlos B. Lopes (Author) FEUP

Journal

Title: Chemical Engineering and Processing - Process Intensification

Vol. 205

ISSN: 0255-2701

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Associated Projects

LA LSRE-LCM - Financiamento Plurianual 2020-2023 para a Unidade LA LSRE-LCM Laboratório de Processos de Separação e Reacção - Laboratório de Catálise e Materiais

Other information

Authenticus ID: P-017-29G

DOI: 10.1016/j.cep.2024.109973

Abstract (EN): CO2 transportation as a hydrate slurry is modelled in Aspen Plus, including the slurry preparation and the pipeline transport. Due to the lack of built-in models for the hydrate formation, mass and energy balances were developed and implemented using a User-block function. NRTL-RK global property method was used, given the accuracy in predicting the CO2 solubility in water under incipient hydrate formation conditions and the dissolution heat of CO2 in water. The conventional process of transporting CO2 in a supercritical state was also modelled to benchmark the hydrate-based technology. The hydrate-based process is safer than the conventional process as it requires lower operating pressures, but the estimated costs are higher due to the need for refrigeration and larger pipeline diameters for transportation. The addition of thermodynamic promoters, that moderate the hydrate formation conditions, the integration of cold streams with other processes, and valuing the water transported with CO2, will enhance the economic attractiveness of the hydrate-based process.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13