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Part Number: Aspen Plus® 11.1 September 2001
Copyright (c) 1981-2001 by Aspen Technology, Inc. All rights reserved. Aspen Plus®, Aspen Properties®, Aspen Engineering Suite, AspenTech®, ModelManager, the aspen leaf logo and Plantelligence are trademarks or registered trademarks of Aspen Technology, Inc., Cambridge, MA. BATCHFRAC and RATEFRAC are trademarks of Koch Engineering Company, Inc.All other brand and product names are trademarks or registered trademarks of their respective companies. This manual is intended as a guide to using AspenTech's software. This documentation contains AspenTech proprietary and confidential information and may not be disclosed, used, or copied without the prior consent of AspenTech or as set forth in the applicable license agreement. Users are solelyresponsible for the proper use of the software and the application of the results obtained. Although AspenTech has tested the software and reviewed the documentation, the sole warranty for the software may be found in the applicable license agreement between AspenTech and the user. ASPENTECH MAKES NO WARRANTY OR REPRESENTATION, EITHER EXPRESSED OR IMPLIED, WITH RESPECT TO THIS DOCUMENTATION, ITSQUALITY, PERFORMANCE, MERCHANTABILITY, OR FITNESS FOR A PARTICULAR PURPOSE.

Corporate
Aspen Technology, Inc. Ten Canal Park Cambridge, MA 02141-2201 USA Phone: (1) (617) 949-1021 Toll Free: (1) (888) 996-7001 Fax: (1) (617) 949-1724 URL: http://www.aspentech.com

Division
Design, Simulation and Optimization Systems Aspen Technology, Inc. Ten Canal Park Cambridge, MA 02141-2201 USA Phone:(617) 949-1000 Fax: (617) 949-1030

Contents
For More Information......................................................................................................... xi Technical Support ............................................................................................................xiii Contacting Customer Support..............................................................................xiii Hours ....................................................................................................................xiii Phone.................................................................................................................... xiv Fax......................................................................................................................... xvE-mail .................................................................................................................... xv Mixers and Splitters 1-1

Mixer Reference...............................................................................................................1-2 Flowsheet Connectivity for Mixer .......................................................................1-2Specifying Mixer..................................................................................................1-3 EO Usage Notes for Mixer...................................................................................1-4 FSplit Reference...............................................................................................................1-5 Flowsheet Connectivity for FSplit.......................................................................1-5 Specifying FSplit..................................................................................................1-6 EO Usage Notes for FSplit...................................................................................1-7 SSplitReference...............................................................................................................1-8 Flowsheet Connectivity for SSplit .......................................................................1-8 Specifying SSplit..................................................................................................1-8 Separators 2-1

Flash2 Reference ..............................................................................................................2-2...