LAPSE:2019.0906
Conference Presentation
LAPSE:2019.0906
Scaling Relations in Modular Process Design
Michael Baldea, Burke A. Snowden, Tam T. Do, Calvin Tsay
August 6, 2019
This presentation deals with the issue of modularization of chemical plants, defined in the sense of designing smaller-capacity facilities (“modules”) that could be used to process geographically-distributed resources or serve distributed customers. Using established scaling relations, it is demonstrated that technologies that scale up well (i.e., for which capital cost increases sublinearly with capacity) scale down poorly, and vice versa. A further analysis of scale-down and modularization is carried out from the perspective of scaling of individual unit operations and their contribution to the plant cost stack. Following the same line of reasoning, it is shown that units that scale down well will scale up poorly and vice-versa. On this basis, it is argued that scaling relations can be used not only to guide the design of modular processes based on existing technology, but also to direct research towards new designs that alleviate the cost problems associated with units that have poor scale-down characteristics. These concepts are briefly illustrated by analyzing the scale-down of the reactor present in an ammonia plant.
Keywords
Process Design, Process Modularization
Suggested Citation
Baldea M, Snowden BA, Do TT, Tsay C. Scaling Relations in Modular Process Design. (2019). LAPSE:2019.0906
Author Affiliations
Baldea M: The University of Texas at Austin [Google Scholar]
Snowden BA: Yale University
Do TT: The University of Texas at Austin
Tsay C: The University of Texas at Austin [Google Scholar]
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Conference Title
Foundations of Computer Aided Process Design 2019 (FOCAPD 2019)
Conference Place
Copper Mountain, Colorado, USA
Year
2019
Publication Date
2019-07-16
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Aug 6, 2019
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License
CC BY 4.0
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http://psecommunity.org/LAPSE:2019.0906
 
Original Submitter
Calvin Tsay