Modelagem e simulação de refervedores

• Autor(a) principal: Santos, Mischelle Paiva dos
• Data de Publicação: 2016
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da UERJ
• Texto Completo: http://www.bdtd.uerj.br/handle/1/12041
• topic: Reboilers; modeling; stochastic simulation; Refervedores; modelagem; simulação estocástica; CNPQ::ENGENHARIAS::ENGENHARIA QUIMICA::OPERACOES INDUSTRIAIS E EQUIPAMENTOS PARA ENGENHARIA QUIMICA

Reboilers are heat exchangers responsible for supplying energy to the fractionation process in a distillation column, one of the most used operations in the chemical industry. On that basis, this work presents the modeling and simulation of two types of reboilers: vertical thermosyphon reboiler and forced circulation reboiler. The proposed model result in asystem of algebraic differential equations solved using the freeSoftware Scilab. Another approach of the study was a stochastic simulation, in order to analyze the influence of some variables in the behavior of the equipment. The study also included a comparison of two formulations for the calculation of the temperature dependence of binary interaction parameters ofWilson s modelused to expresstheno ideality of the liquid phase. Furthermore, the influence of binary interaction parameters on phase equilibrium and system simulation was evaluated by sensitivity analysis. The proposed algorithms for the two types of reboilers were applied to an example regarding the vaporization of a binary mixture, obtaining as a result the pressure, temperature and mass flow of liquid and vapor profilesalong the entire route. In addition, comparisons were made between properties of the liquid phase as well as between the T-x-y diagrams corresponding to both formulationsof the binary interaction parameter