DEVELOPMENT OF RATE-BASED NON EQUILIBRIUM C02 REMOVAL AT ELEVATED PRESSURE FROM NATURAL GAS

In this research, experimental works involving high concentration CO2 removal at
elevated pressures are conducted using a high pressure CO2 pilot plant to imitate the
condition at offshore platform and the result is used to validate a simulation model
based on established model in literatures. Rate based non-equilibrium model using
20wt % aqueous Monoethanolamine (MEA) is developed in MATLAB based on the
model of Pandya. The structure of the model includes reaction kinetics, mass transfer
rate, and heat transfer and enhancement factor. Since the condition of CO2 removal at
atmospheric and high pressure is different, pressure modification index-/ is
experimentally derived and introduced into the original rate based non-equilibrium
equations to account for the non-idealities and to reduce the prediction error between
the simulation and the pilot plant data.