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Column Design Using Mass Transfer Rate Simulation INTRODUCTION

The solution to the dilemma of translating theoretical stages into actual trays and packed bed depths is to use detailed mass transfer, rate-based simulation. This completely new approach to simulating complex chemically-reactive, nonideal separations is particularly suited to amine treating operations. This paper uses the ProTreatTM simulation package to look at three examples of commercial columns in CO2 removal and selective H2S treating. Comparisons with plant performance test data, and especially column temperature profile data, are used to demonstrate the benefits of modeling actual column internals using mass transfer rate-based process simulation. No input of empirical efficiency information is required. Tower internals performance is directly modeled, and translation from theoretical stages to the real world of packing and trays never arises. ProTreat is a trademark of Optimized Gas Treating, Inc. Column Design Using Mass Transfer Rate Simulation