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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/15176

Title: Phase-dependent binary interaction parameters in industrial low-density polyethylene separators
Other Titles: Journal of Applied Polymer Science
Authors: Costa, Glória Meyberg Nunes
Guerrieri, Yuri
Kislansky, Simão
Embiruçu, Marcelo
Keywords: Applications;Phase behavior;Polyolefins;Theory;Modeling;Polyethylene
Issue Date: May-2013
Abstract: In the production process of low-density polyethylene (LDPE), an important step is the flash separation of monomers and other small molecules from the polymer produced. The process is carried out adiabatically in two stages. To improve the perfomance of thermodynamic models, it is very important to analyze the use of model binary interaction parameters (BIP) dependent on the phase characteristics for each phase (phase-dependent BIP). iN THIS WORK THE pc-saft (perturbed-chain statistical associating fluid theory) equation of state (eos) is applied to the flash simulation of LDPE industrial separators using eight different resins. The main numerical aspects are examined with emphasis on the optimization strategy for the EOS BIP that explicitly characterizes each phase involved sepately. The results demonstrate good predictive behavior. As a result of improved and more consistent modeling, a new strategy for optimized operation can be envisaged for the sequence of separators.
Description: Texto completo: acesso restrito. p. 2106–2117
URI: http://repositorio.ufba.br/ri/handle/ri/15176
ISSN: 0021-8995
Appears in Collections:Artigos Publicados em Periódicos (PEI)

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