Graphical Techniques for Mass Integration with Mass-Exchange Interception

This chapter illustrates the incorporation of mass-exchange network (MEN) synthesis within a more comprehensive mass-integration analysis. A graphical representation of the waste interception network “WIN” is described that provides a framework for identifying the solution strategies, including segregation, mixing, interception, recycle and unit manipulation. Several graphical techniques are introduced to demonstrate the integration of interception with other mass-integration strategies. Interception is a key element of mass integration. The source-sink mapping diagram is a visualization tool that can be used to determine direct-recycling opportunities. The application of mass integration to enhance yield and reduce wastewater is illustrated with the help of an acrylonitrile plant.