Chemicals in Gas Processing (CHIGP): An industrial project for the thermodynamics of complex petroleum fluids

摘要

Since 1999, a thermodynamic project funded by major petroleum, chemical and gas companies has been carried out at the Technical University of Denmark (Department of Chemical and Biochemical Engineering). The project is called CHIGP (Chemicals in Gas Processing).The purpose of the project is: i . to provide a rigorous thermodynamic model, the CPA (Cubic-Plus-Association) equation of state together with the parameters required for multiphase multicomponent phase equilibrium calculations of mixtures containing oil & gas, water and chemicals e.g. gas hydrate inhibitors (methanol, glycols) and organic acids ii. to develop robust algorithms for complex thermodynamic calculations and parameter estimation iii. to conduct experimental measurements to support the model development when necessary iv. to disseminate the results of the project to the participating companies via CAPE-OPEN compliant modules and via a user-model specifically developed for the ASPEN process simulator This article highlights results for the project with emphasis on newest results developments for: ·mixtures with acid gases (CO_2, H_25), water and chemicals ·glycol-containing systems.