Automation and Optimization of Startups, Load Changes and Batch Processes

Abstract

Bei Konti-Anlagen treten oft dynamischen Übergangsvorgänge, wie Anfahr-, Last-oder Produktwechsel, auf, wohingegen Automation and Optimization of Startups, Load Changes and Batch ProcessesContinuous processes show dynamics during load changes, start-up and shutdowns whereas batch processes exhibit inherent dynamics. In the past, the major concern of automating these dynamics states of process operation were safe and reproducible operation, however, today modern methods of process operation allow for the economic optimization at the same time. The automation and optimization of batch processes pose challenges in several areas: Mastering the high complexity, connecting heterogeneous components by automation, and combining extensive knowledge from both process engineering and automation during project execution. This contribution describes approaches from industrial practice and punctually academic research, which solutions for the challenges are readily available and how to implement these.

Challenges in Optimization and Control of Biobased Process Systems: An Industrial-Academic Perspective

“…If the lower layers effectively react to fast disturbances such that the higher layers need not take into account this quickly evolving flow of information, and the slow disturbances evolve at a time scale that allows timely passing of set points downward through the hierarchy, a separated approach can be effective. 33,64 In general, ref 65 points out that personnel (i.e., operators) need to be accepting of the new technology in order for an advanced process control system implementation to be successful. If decisions are taken manually, operators need to be educated and supported accordingly.…”

“…138 This can be understood in terms of reducing plant settling time, 147 but recently, the area of optimizing operating conditions during transient phases (batch operation, load or product shift) using nonlinear dynamic process models is gaining momentum also in the industry. 33,148 Searching academic literature for continuous processes with large changeover costs, one is bound to find the continuous production of polymers. Here, plants face changeover problems similar to the bioindustry, naturally, i.e., biopolymers.…”

Einsatz gehobener Automationslösungen

“…er Namur-Arbeitskreis 2.2. "Prozessführung" befasst sich seit Jahren mit dem Einsatz gehobener Automationslösungen [1][2][3][4][5][6], welche von einigen PLS-Herstellern als Advanced Solutions bezeichnet werden. Auf der Namur-Hauptsitzung 2011 berichtete der Arbeitskreis über aktuelle Entwicklungen.…”