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Introduction to Pinch Technology-LinhoffMarch

Introduction to Pinch Technology Copyright 1998 Linnhoff March Linnhoff March Targeting House Gadbrook Park Northwich, Cheshire CW9 7UZ, England Tel: +44 (0) 1606 815100 Fax: +44 (0) 1606 815151 1 What this paper contains This document aims to give an overview of the fundaments of Pinch Technology. The reader will learn: How to obtain energy targets by the construction of composite curves. The three rules of the Pinch principle by which energy efficient heat exchanger network designs must abide. About the capital-energy trade off for new and retrofit designs. Of the best way to make energy saving process modifications. How to go about multiple utility placement. How best to integrate distillation columns with the background process. The most suitable way to integrate heat engines and heat pumps.

Data extraction relates to the extraction of information required for Pinch Analysis from a given process heat and material balance. Figure 2(a) shows an example process flow-sheet involving a two stage reactor and a distillation column. The process already has heat recovery, represented by the two process to process heat exchangers.

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