Dynamic Process Intensification via Data-Driven Dynamic Optimization: Concept and Application to Ternary Distillation

Lingqing Yan, Tewodros L. Deneke, Keijo Heljanko, Iiro Harjunkoski, Thomas F. Edgar, Michael Baldea*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

1 Sitaatiot (Scopus)

Abstrakti

Process intensification is a design philosophy aimed at making chemical processes safer and more efficient. Its implementation often results in significant modifications to the design and structure of a process, with several conventional unit operations occurring in the same physical device. Traditionally, process intensification has focused on steady-state operation. In our previous works, we introduced dynamic process intensification (DPI) as a new intensification paradigm based on operational changes for conventional or intensified units. DPI is predicated on switching operation between two auxiliary steady states selected via a steady-state optimization calculation, which ensures that the system generates, on average and over time, the same products as in nominal steady-state operation, but with favorable economics. This paper extends the DPI concept and introduces a novel dynamic optimization-based DPI (Do-DPI) strategy that involves imposing a true cyclic operation rather than switching between two discrete states. We discuss its implementation using surrogate dynamic models learned via system identification. An extensive case study concerning a ternary distillation column separating a canonical hydrocarbon mixture shows that Do-DPI can reduce energy use by more than 4% relative to steady-state operation, with no significant deviations in product quality and production rate.

AlkuperäiskieliEnglanti
Sivut10265–10275
Sivumäärä11
JulkaisuIndustrial and Engineering Chemistry Research
Vuosikerta60
Numero28
Varhainen verkossa julkaisun päivämäärä6 heinäk. 2021
DOI - pysyväislinkit
TilaJulkaistu - 21 heinäk. 2021
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

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