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ADVANCED PROCESS CONTROL FOR ULTRA-DEEP-HYDRODESULFURIZATION USING Exasmoc R 3 AND Exarqe R 3

Advanced process control in the PCS (Process Control System) market is a key technology to glean the greatest profit from the existing equipment in the plant. The Advanced process control can be easily applied to in-service processes and helps stabilize and optimize operations taking process restrictions into consideration. The Exasmoc (a multivariable model predictive control package) and Exarqe (a robust quality estimator package) released in 2000 have been in operation in many DCS (Distributed Control System) or PLC (Programmable Logic Controller) systems. Recently, Exasmoc R3 and Exarqe R3 which incorporate enhanced algorithms have been newly developed to realize operations for large-scale and critical control processes. Hence, these two packages are strongly recommended for adoption in the ultra-deep-hydrodesulfurization process which is now under consideration by world-wide oil refinery plants. This paper introduces an example of the functions of Exasmoc R3 and Exarqe R3, which are recommended for use in high-level advanced process control.