Phillips Petroleum Company

Raul Adarme

Fan-Nan Lin

Edward L Sughrue

Stephen L Parrott

Edwin P Sasscer

A well reasoned steady state model for simulation of pentane isomerization in a long tubular reactor predicts important reaction variables such as feed conversion, product yields, temperature and pressure. The predictions are based on inputs including feed flowrates, composition, temperature and pressure. The model includes a set of differential equations for component concentrations with respect to axial distance along the reactor, and reaction rate constants expressed in terms of physical properties. A method of programming a computer for simulating the reaction is disclosed.

Method and apparatus for computer simulation of pentane isomerization

Catalyst life in desulfurization of distillate hydrocarbon streams is predicted with the aid of a computer simulation which embodies an analytical kinetic model of a hydrodesulfurization reaction and a semi-empirical model for catalyst deactivation. The simulation specifies the decline of catalyst activity with time and a current reaction temperature required to maintain the initial catalyst activity. The useful life of the catalyst is considered to be the time required for catalyst activity in the simulated reaction to decline sufficiently from its initial level so that a predefined maximum reaction temperature is reached while maintaining a desired level of sulfur in the desulfurized product. The computer time needed to simulate the reaction is decreased by combining superior features of LOTUS 1-2-3 and FORTRAN language, such that input/output and graphic operations are implemented with LOTUS 1-2-3 and numerical calculations are executed in FORTRAN.

Growing community of inventors

Bartlesville, OK, United States of America

Raul Adarme