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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.

introduction to pinch technology 3 figure 14: targeting for retrofit applications.....17 figure 15: effect of shape of composite curves on optimum process dtmin.....19 figure 16: modifying the process, (a) the +/-principle for process modifications (b) temperature changes can affect the energy targets only if streams are shifted

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