Semi-Empirical Model to Estimate the Solubility of CO2 NaCl Brine in Conditions Representative of CO2 Sequestration

3rd International Conference on Global Sustainability and Chemical Engineering

工业技术;化学工业

Mohammadian, E.^1 ; Hamidi, H.^2 ; Azdarpour, A.^3

Faculty of Chemical Engineering, Universiti Teknologi MARA, Selangor, Shah Alam

40450 UiTM, Malaysia^1

383 Fraser Noble Building, School of Engineering, King's College, University of Aberdeen, United Kingdom^2

Department of Petroleum Engineering, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran^3

关键词: CO2 concentration;    CO2 sequestration;    Malay Basin;    Salinity gradients;    Semi-empirical;    Semi-empirical modeling;    Sophisticated mechanism;    Thermodynamic conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/358/1/012013/pdf
DOI  :  10.1088/1757-899X/358/1/012013

学科分类：工业工程学

来源: IOP

【 摘 要 】

CO2 sequestration is considered as one of the most anticipated methods to mitigate CO2 concentration in the atmosphere. Solubility mechanism is one of the most important and sophisticated mechanisms by which CO2 is rendered immobile while it is being injected into aquifers. A semi-empirical, easy to use model was developed to calculate the solubility of CO2 in NaCl brines with thermodynamic conditions (pressure, temperature) and salinity gradients representative CO2 sequestration in the Malay basin. The model was compared to the previous more sophisticated models and a good consistency was found among the data obtained using the two models. A Sensitivity analysis was also conducted on the model to test its performance beyond its limits.