January 2018

Process Control and Instrumentation

Migrating from Fortran to ISA S-88

A major refiner operates two catalytic reforming units for gasoline octane improvement and aromatics production in Texas. In each of these units, five reactors filled with catalyst are operated continuously in series to reform paraffinic hydrocarbons in the presence of hydrogen (H2). During this process, some byproduct coke is unavoidably produced and deposits on the catalyst, which leads to gradual catalyst deactivation.

Ford, J., Kolluri, T., Bozeman, J., MAVERICK Technologies

A major refiner operates two catalytic reforming units for gasoline octane improvement and aromatics production in Texas. In each of these units, five reactors filled with catalyst are operated continuously in series to reform paraffinic hydrocarbons in the presence of hydrogen (H2). During this process, some byproduct coke is unavoidably produced and deposits on the catalyst, which leads to gradual catalyst deactivation. To restore the catalyst to full activity, each reactor must be taken offline periodically so that the coke can be burned off the catalyst. A “swing” reactor is brought into reforming service in place of the reactor that is being regenerated to maintain production capacity.

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