Iterative real-time optimization scheme for optimal operation of chemical processes under uncertainty: Proof of concept in a miniplant

R Hernandez, J Dreimann, A Vorholt… - Industrial & …, 2018 - ACS Publications
Real-time optimization (RTO) has gained growing attention during the past few years as a
useful approach to boost process performance while safety and environmental constraints …

Direct learning of improved control policies from historical plant data

K Alhazmi, SM Sarathy - Computers & Chemical Engineering, 2024 - Elsevier
The continuous optimization of the operational performance of chemical plants is of
fundamental importance. This research proposes a method that utilizes policy-constrained …

Data reconciliation for chemical reaction systems using vessel extents and shape constraints

S Srinivasan, J Billeter, S Narasimhan… - Computers & Chemical …, 2017 - Elsevier
Concentrations measurements are typically corrupted by noise. Data reconciliation
techniques improve the accuracy of measurements by using redundancies in the material …

A perturbed port-Hamiltonian approach for the stabilization of homogeneous reaction systems via the control of vessel extents

TS Nguyen, CK Tan, NH Hoang, MA Hussain… - Computers & Chemical …, 2021 - Elsevier
The paper proposes a tracking-error passivity-based control scheme for the asymptotic
stabilization of homogeneous reaction systems. The approach uses the concept of vessel …

Output regulation via trajectory tracking for chemical reactors with jacket dynamics

TS Nguyen, NH Hoang, CK Tan, MA Hussain… - Computers & Chemical …, 2023 - Elsevier
This work deals with a control strategy to regulate homogeneous reaction systems in
reactors equipped with a cooling jacket. The reaction system is expressed in terms of vessel …

Feedback passivation plus tracking-error-based multivariable control for a class of free-radical polymerisation reactors

TS Nguyen, NH Hoang… - International Journal of …, 2019 - Taylor & Francis
This paper proposes a tracking-error-based multivariable control to stabilise a nonlinear
system at the desired trajectory (including the open-loop unstable equilibrium manifold). The …

Reaction invariant-based reduction of the activated sludge model ASM1 for batch applications

JA Santa Cruz, SF Mussati, NJ Scenna… - Journal of environmental …, 2016 - Elsevier
In any system, there are some properties, quantities or relationships that remain unchanged
despite the applied transformations (system invariants). For a batch reaction system with n …

Modeling of reactive batch distillation processes for control

A Marquez-Ruiz, CS Méndez-Blanco… - Computers & Chemical …, 2019 - Elsevier
Reactive batch distillation (RBD) is a preferred process intensification technology to carry
out equilibrium-limited reactions. It is a multicomponent, multiphase system. Appropriate …

Revisiting the concept of extents for chemical reaction systems using an enthalpy balance

NH Hoang, D Rodrigues, D Bonvin - Computers & Chemical Engineering, 2020 - Elsevier
For the investigation of complex reaction systems, it has been proposed to decouple the
various rate processes using a linear time-invariant transformation that is constructed from …

A perspective on the impact of process systems engineering on reaction engineering

K Sivaramakrishnan, A Puliyanda… - Industrial & …, 2019 - ACS Publications
Process systems engineering (PSE), as the name suggests, emphasizes an approach to
understanding the behavior of systems as a whole with a view to improving decision-making …