Real-Time Optimization (RTO) applications consist of a paramount tool for the Refining and the Chemical Process Industries. It evaluates the chemical process operational conditions, calculates optimum operating conditions and sends setpoints to the plant in order to maximize the overall profit. The purpose of this paper is to report the sustain activities with respect to the RTO models for Olefins plants in a partnership formed by Aspen Technology, the world's leading supplier of process simulation software, and Braskem S.A., the Brazilian leading petrochemical company. Reliability on the RTO results leads the operators to consistently implement the suggested setpoints to the plants. In addition, operational results showed the RTO models were able to increase the ethylene production and reduce high valued chemicals losses, thus improving plant profit. The results also include drastic reductions in steam import rates.
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