Process Integration

IIT Roorkee Course , Prof. B. Mohanty

Lecture 1: Process integration, methods and area of application

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Lecture Details :

Process Integration by Dr. B. Mohanty,Department of Chemical Engineering,IIT Roorkee.For more details on NPTEL visit

Course Description :

Introduction to process Intensification and Process Integration(PI) - Areas of application and techniques available for PI, onion diagram - Pinch Technology-an overview:Introduction, Basic concepts, How it is different from energy auditing, Roles of thermodynamic laws, problems addressed by Pinch Technology - Key steps of Pinch Technology:Concept of ΔTmin , Data Extraction, Targeting, Designing, Optimization-Supertargeting - Basic Elements of Pinch Technology:Grid Diagram, Composite curve, Problem Table Algorithm, Grand Composite Curve - Targeting of Heat Exchanger Network:Energy Targeting, Area Targeting, Number of units targeting, Shell Targeting and Cost targeting - Designing of HEN:Pinch Design Methods, Heuristic rules, stream splitting, design of maximum energy recovery(MER) - Use of multiple utilities and concept of utility pinches, Design for multiple utilities pinches, Concept of threshold problems and design strategy - Network evolution and evaluation-identification of loops and paths, loop breaking and path relaxation.

Design tools to achieve targets, Driving force plot, remaining problem analysis, diverse pinch concepts, MCp ratio heuristics - Targeting and designing of HENs with different ΔTmin values, Variation of cost of utility, fixed cost, TAC, number of shells and total area with ΔTmin Capital-Energy trade-offs - Process modifications-Plus/Minus principles, Heat Engines and appropriate placement of heat engines relative to pinch - Heat pumps, Appropriate placement of heat pumps relative to pinch - Steam Rankin Cycle design, Gas turbine cycle design, Integration of Steam and Gas turbine with process - Refrigeration systems, Stand alone and integrated evaporators - Heat integrations and proper placement of Reactors for batch Processes as well as continuous processes - Retrofit of distillation systems.

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