Coproduction of Ethylene and Propylene based on Ethane and Propane Feedstocks

BELEN RODRIGUEZ REARTES ; ALDO R. VECCHIETTI; SOLEDAD DIAZ; ALEJANDRO PEDROZO; IGNACIO E. GROSSMANN

Milan

Simposio; ESCAPE 30; 2020

In this work, we develop a mathematical model to make decisions about the optimal scheme and operating conditions of an olefin plant. We formulate a superstructure that includes ethane and propane steam cracking, propane dehydrogenation and olefins metathesis process for the co-production of ethylene and propylene. Furthermore, considering the relevance of the separation scheme, the state equipment network (SEN) representation is considered and rigorous equations to model distillation columns (MESH) are formulated. This model is implemented in GAMS to maximize the project net present value (NPV). Numerical results show that the combination of ethane steam cracking and olefin metathesis is the most profitable configuration under the price scenario considered in this work.