Data di Pubblicazione:
2018
Citazione:
Selective synthesis of polyamines in multipurpose plants / F. Maestri, F. Sacco, C. Pirola, R. Rota. - In: CHEMICAL ENGINEERING SCIENCE. - ISSN 0009-2509. - 186(2018 Aug 31), pp. 219-227. [10.1016/j.ces.2018.04.036]
Abstract:
A number of reaction processes undergo yield drops since an intermediate target species can further react
with one of the reactants generating lower volatility by-products. Such reactions are typically fast and
non-selective, so that a gradual conversion of the reactants is recommended because of safety and quality
constraints; when dealing with relatively low-volumes of a highly fragmented set of products, a
semibatch reactor is normally adopted where the reaction selectivity is increased by increasing the
excess of the selective reactant, therefore lowering the plant productivity.
For increasing the process selectivity without reducing the plant productivity a different reactor
configuration has been recently proposed: the so-called semibatch recycle reactor. However, the good
performance of this configuration has never been experimentally confirmed.
In this work, the unselective industrial synthesis of polyamines through alkylation of 1,2-
dichloroethane with a diamine has been experimentally investigated both in a standard semibatch reactor
as well as in a semibatch recycle reactor, showing that the latter can lead to a significant increase of
both the process selectivity and productivity.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
multipurpose processes; selectivity; safety; Semibatch Reactor (SBR); Semibatch Recycle Reactor (SBRR); polyamines
Elenco autori:
F. Maestri, F. Sacco, C. Pirola, R. Rota
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