Applied Energy | VOL. 262
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Development of a framework for sequential Bayesian design of experiments: Application to a pilot-scale solvent-based CO2 capture process

Publication Date Mar 1, 2020

Abstract

Abstract In this paper, a methodology is developed for sequential design of experiments (SDoE) for process systems and applied to a solvent-based CO2 capture system. In this approach, the prior knowledge of the system is used to prioritize process data collection at specific operating conditions. These data are then incorporated into a Bayesian inference methodology for updating a stochastic model by refining estimations of its underlying parameters, and the updated model is then used to generate the next set of test runs. Thus, the new knowledge obtained from the data is used to guide subsequent iterations of the experimental runs, ensuring that the overall data collection is maximally informative given that most experimental campaigns, especially at pilot or higher-scale plants, are costly, time-consuming, and resource-limited. The test run objective for this work was to minimize the maximum model prediction uncertainty for key output variables, but the methodology is generic and can be readily applied to other test run objectives. This methodology is applied to an aqueous monoethanolamine (MEA) pilot plant campaign at the National Carbon Capture Center (NCCC) in Wilsonville, Alabama, USA. The SDoE framework was utilized for two iterations, while collecting 18 sets of data representing different process conditions, and this resulted in an overall average reduction in uncertainty of approximately 50% in the prediction of CO2 capture percentage. Moreover, 11 additional data sets were obtained with variation of absorber packi...

Concepts
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Sequential Design Of Experiments
National Carbon Capture Center
Great Importance For Many Applications
Solvent-based CO2 Capture
Reduction Of Model Uncertainty
Pilot Plant Campaign
Importance For Many Applications
Aqueous Monoethanolamine
Framework For Design Of Experiments
Reduction In Uncertainty

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