Integrated Scheduling and Control of Continuous-Time Blending Processes

Operation of Flexible Multiproduct Modular Continuous Polymerization Plants

“…This is a conservative estimate and may be reduced by using advanced control techniques to drive the plant to the new operating conditions faster, e.g. as reported in Nyström et al, [ 27 ] Prata et al, [ 28 ] Frankl et al, [ 11,12 ] and Hashemi et al [13][14][15] Table 10 shows the number of module movements for the different types of moveable modules for the different reconfi guration strategies for the different scenarios. A shorter demand fulfi llment period leads to a higher number of module exchanges if compared to a longer demand fulfi llment period (4x sc1 vs sc2).…”

“…[ 9,10 ] Furthermore, new strategies to monitor and operate continuous plants realizing the F3 Factory concept effi ciently were developed. [11][12][13][14][15] The high fl exibility of the F3 Factory concept on the other hand implies signifi cant challenges. For frequent product changeovers similar to the traditional batch production, the equipment has to be cleaned, resulting in the production of polluted water or solvents and, more importantly, in the production of off-spec product during the convergence to the product specifi cations of the next product.…”

“…To accelerate the implementation of the new production mode in the chemical industry, a toolset of process design methodologies for applying process intensification concept, and batch‐to‐continuous production mode transfers, supported by innovative decision tools was developed . Furthermore, new strategies to monitor and operate continuous plants realizing the F3 Factory concept efficiently were developed …”

A modeling strategy for integrated batch process development based on mixed-logic dynamic optimization

“…Hybrid discrete/continuous models have been widely used in DO problems for determining the optimal control profiles of individual processing units along time [14,15]. The optimization of dynamic control trajectories in given chains of process stages has been also applied in the context of batch process synthesis [26,30,27], batch plant design [38,51], and short-term scheduling [39,40,41,42], among others.…”

“…Additionally, several authors have sought the sustainable synthesis of processing schemes in retrofit scenarios, even if they use heuristic approaches based on path flow decomposition and indicator-based assessment [33,34,35,36,37]. Besides, the use of dynamic performance models in allocation problems has received a strong impulse in the last two decades in the context of shortterm scheduling, even though these contributions do not cover other synthesis and design decisions, such as the selection of process technologies, chemicals, or equipment sizing, among others [38,39,40,41,42].…”