Estudo da viabilidade econômica da separação do etilbenzeno-estireno através do processo de destilação auxiliado por bombas de calor com recompressão de vapor e com os fluidos intermediários água (R718) e triclorometano (R20).

Abstract

The present work has the objetive to study the economic viability of the ethylbenzene-etyrene separation through the one heat-pump connected to a conventional distillation column. The work is divided in three parts: optimization of the conventional distillation column, when payback period is adopted as the criterion; heat recoved from the top of the condensation column through heat-pumps with vapor recompression and intermediate fluids like water (R718) and methane trichloro (R20), and the analysis between the operational and capital costs of the conventional and heat-pumps systems was compared. It was done to obtain the optimal economics conditions for a destination with heat-pump. The optimal operational parameters obtained from the conventional system are the same for all distillation with heating pump systems studied. The results showed that, both the heating pumps systems are economic alternatives to susbstitute the conventional distillation system. Among the systems with heating pumps the vapor recompression has showed the most suitable technic to heating recovery.