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Maximizing Propylene Separation from Propane by Extractive Distillation with Aqueous N ‐Methyl‐2‐pyrrolidone as Separating Agent
Author(s) -
Cruz Valdez Jesús Alonso,
Avilés Martínez Adriana,
Vallejo Montesinos Javier,
Pérez Elías,
Patiño-Herrera Rosalba
Publication year - 2021
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.202100203
Subject(s) - propane , extractive distillation , distillation , aqueous solution , chemistry , selectivity , azeotropic distillation , chromatography , separation process , chemical engineering , organic chemistry , catalysis , engineering
The separation of polymer‐grade propylene from a propylene‐propane mixture was performed by an extractive distillation (ED) process in the steady state, and was developed on the Aspen Plus V9 simulator, by using an extractive column and a recovery column. To increase the volatility and relative selectivity of propylene, aqueous N ‐methyl‐2‐pyrrolidone (NMP) was used as extracting agent. By using an ED process and aqueous NMP, compared with the high‐pressure binary distillation process, a reduction in energy consumption was obtained, with a saving of 52 % in total annual cost.