Unit of recovery gases of a plant of propane dehydrogenation (PDH)

Identifier:  PFC:26

Handle: https://hdl.handle.net/20.500.11797/PFC26

Authors:  Argüeso Basconcillos, Paula; Calero Rodríguez, Eugeni; Rivera García, Begoña

Abstract:
A design at basic level of engineering has been carried out of one unit of gases recovery of a plant of propane dehydrogenation (PDH). The purpose, is to retrieve 350.000 annual tons of propileno of 99,5% of purity to sell it to the industry that produces the polipropilene. - - The feeding of the unit comes from the unit of reaction of the same one plant. This current was formed by propane, with 25% approximately of propilene and other traces of light and heavy fractions. - - The unit consists of two essential zones of distillation, fraction the first mix eliminate the traces of light fraction of the propane-propilene, and in the second zone is purifying the propilene until achieves the specification, obtaining in turn as a by-product 1,1 a million year of propane at 90% in weight. The commercialization of the by-product supposes some annual incomes to the company of 292,7 million ? , that is, more of 50% of the total annual incomes. - - The budget total of the installation is of 213,6 million ?, including the costs of - installation and starting. The Account of Results of the first exercise of operation of the unit in 100% of capacity (exercise 2013), shows a benefit after taxes of 27,4 million ?. And as regards the profitability of the investment, it can be highlighted that the investment recovers to the fourth year (2014) and the TIR corresponds to 19%. -