Volume 34: CCUS Technologies for the Carbon Neutrality: Part II

Integrated model in Carbon Capture and Storage: Flow Assurance Challenges and Case Studies Sun Xinghua, Wang Bing, Cai Xingxing

Abstract

Carbon Capture and Storage (CCS) is intended to capture CO2 created during the combustion of fossil fuels used in the production of thermal energy, chemical plants, and natural gas decarbonization process. Typically, pipeline transportation is often used to transport and store CO2 underground. Over the following ten years, there will be an increase in demand for carbon capture technology, CO2 pipeline transportation, and CO2 underground storage. In terms of pipeline transportation efficiency and safety, dense phase or supercritical phase are typically chosen. This paper uses KBC Multiflash 7.3 to compare the physical characteristics of fluids with various components under various equations of state. It is discovered that utilizing EOS-CG as the equation of state to describe fluid properties is a more conservative approach. This paper also analyzes transportation conditions of CO2 with a small amount of impurity under different injection rates, compares the differences in pressure and temperature, liquid hold up, hydrate and CO2 corrosion using the multiphase flow transient simulator OLGA as the primary simulation tool, along with its special pressure-enthalpy (PH) flash algorithm.

Keywords Equation of State, Flow instability, Flow Assurance, OLGA