Journal ArticleDOI
Dynamics of plants with recycle
Morton M. Denn,Ram Lavie +1 more
TLDR
In this paper, the effect of recycling on plant dynamics is examined, and the overall plant response will have a longer characteristic time and higher steady-state gain than traditional plant response.About:
This article is published in Chemical Engineering Journal.The article was published on 1982-01-01. It has received 81 citations till now.read more
Citations
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Journal ArticleDOI
Nonlinear dynamics and control of process systems with recycle
Aditya Kumar,Prodromos Daoutidis +1 more
TL;DR: In this paper, a model reduction methodology for deriving nonlinear low-order models of the slow dynamics induced by large recycle streams is presented, and a controller design framework consisting of properly coordinated controllers in the fast and slow time scales.
Journal ArticleDOI
Process networks with decentralized inventory and flow control
TL;DR: In this paper, a model for complex chemical process networks is proposed, where the state is represented by energy, volume and mass inventories, and the dynamic behavior of the process system is constrained so that all trajectories satisfy the first and second laws of thermodynamics.
Journal ArticleDOI
Reactor/separator processes with recycle—1. Candidate control structure for operability
Kwo-Liang Wu,Cheng-Ching Yu +1 more
TL;DR: In this article, a balanced control structure and controller tuning procedure is proposed to handle large load changes while maintaining good dynamic performance in a reactor/separator process and a systematic tuning procedure was also proposed to find the controller parameters in plantwide control.
Journal ArticleDOI
Plantwide Control of Industrial Processes: An Integrated Framework of Simulation and Heuristics
TL;DR: In this paper, an integrated framework of simulation and heuristics is proposed, which exploits the inherent interlink between them, and the proposed framework is then successfully applied to an industrially relevant case study: the hydrodealkylation of toluene (HDA).
Journal ArticleDOI
Integrated design and control of chemical processes – Part I: Revision and classification
TL;DR: This classification fundamentally differentiates between “projecting methods”, where controllability is monitored during the process design to predict the trade-offs between design and control, and the “integrated-optimization methods’ which solve the processDesign and the control-systems design at once within an optimization framework.
References
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Journal ArticleDOI
Dynamics and control of the activated sludge wastewater process
Uri Attir,Morton M. Denn +1 more
TL;DR: In this article, the ratio control on both sludge recycle and settler underflow is proposed to balance the need to maintain small variations in reactor solids concentration with the need for small variations of sludge height regulation.