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Using Pinch Technology to Explore Trade-Offs Between Energy Cost, Capital Cost, Process Modifications, and Utility Selection
Abstract
Process design is a complex task. Many
decisions regarding feedstock, reaction routes,
separation alternatives, heat recovery and
utility systems must be made. Each of these
decisions, and interactions between them, have a
significant impact on the total cost of installing
and operatlng a process. Understanding the impact
of these decisions in the context of the overall
process can lead to significant savings in both
capital and operating costs. Full investigation
of these interactions through engineering
studies is expensive in terms of both time and
money, and in most cases is not done. This
results in missed opportunities to save energy and
capital.
Pinch Technology, however, offers a new
approach to designing total processes. It
provides insight, tools, and methodologies which
allow the impact of design decisions to be
understood, quantitatively, in the context of the
overall process, before detailed engineering
studies are required. The development of these
capabilities expands Pinch Technology's role in
process design far from the early breakthroughs of
energy targeting and heat exchanger network
design (I).
This paper describes the tools and approach
involved in determining the trade-offs between
capital cost, energy cost, process modifications
and utility selection. The application of Pinch'
Technology to a Chemi-Thermo Mechanical Pulping
process is used to illustrate the approach and the
results.
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Citation
McMullan, A. S. (1988). Using Pinch Technology to Explore Trade-Offs Between Energy Cost, Capital Cost, Process Modifications, and Utility Selection. Energy Systems Laboratory (http://esl.eslwin.tamu.edu). Available electronically from https : / /hdl .handle .net /1969 .1 /92372.