Introduction to Pinch Technology-LinhoffMarch

Introduction to Pinch Technology-LinhoffMarch -...

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Unformatted text preview: 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 [email protected] www.linnhoffmarch.com 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 . • The principles of data extraction . • Some of the techniques applied in a study of a total site . The text covers all of the aspects of the technology in PinchExpress, as well as going on to detail theory employed in the SuperTarget suite from Linnhoff March [4]. This suite allows the user to carry out an in depth pinch analysis, using the Process, Column and Site modules. See the relevant pages of the Linnhoff March Web site or contact Linnhoff March for more details. Introduction to Pinch Technology 2 © Copyright 1998 Linnhoff March Table of Contents 1 WHAT THIS PAPER CONTAINS...................................................................................................... 1 2 WHAT IS PINCH TECHNOLOGY?.................................................................................................. 4 3 FROM FLOWSHEET TO PINCH DATA ............................................................................................ 5 3.1 Data Extraction Flowsheet ............................................................................................ 5 3.2 Thermal Data................................................................................................................. 5 4 ENERGY TARGETS..................................................................................................................... 6 4.1 Construction of Composite Curves ............................................................................... 6 4.2 Determining the Energy Targets ................................................................................... 7 4.3 The Pinch Principle........................................................................................................8 5 TARGETING FOR MULTIPLE UTILITIES.......................................................................................... 9 5.1 The Grand Composite Curve ........................................................................................ 9 5.2 Multiple Utility Targeting with the Grand Composite Curve ........................................ 11 6 CAPITAL - ENERGY TRADE-OFFS .............................................................................................. 12 6 CAPITAL - ENERGY TRADE-OFFS ....
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This note was uploaded on 08/31/2011 for the course CHE 4273 taught by Professor Staff during the Spring '10 term at Oklahoma State.

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Introduction to Pinch Technology-LinhoffMarch -...

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