Processo industrial semibatelada de produção de nitrilas: validação e simulação dinâmica.

Abstract

Useful in both medicine and polymer chemistry, nitriles formed from fatty acids recently became of industrial interest also in the field of biofuels due to their high energy density, being considered in the national and international market as chemical-platform, being attractive for establishing new platforms from which are derived several final products. In the most important route for the formation of surfactants, the nitriles are produced from the reaction of a fatty acid with the ammonia and can be carried out in a continuous process or in batch using as aluminum oxide or zinc oxide, but, in this work, is proposed a new technology for this production using a semi-batch route, where unreacted ammonia is reused through a gaseous circuit. New strategies for process modeling and simulation have been developed in Aspen Plus® and Aspen Dynamics® through pre-existing mechanisms, since traditional methodologies using only continuous reactors, such as CSTR and PFR, and / or batch reactors , such as Rbatch, found in the software were not able to describe the process correctly. In this way the results were evaluated by focusing on energy efficiency, renewable raw materials, emission-free mobility and preservation of finite resources, as well as creating an attractive, economically viable and secure virtual environment for testing