Course Details

Subject {L-T-P / C} : CH6333 : Pinch Technology {3-0-0 / 3}
Subject Nature : Theory
Coordinator : Prof. Hara Mohan Jena


Process Integration and its Building Blocks: Definition of Process Integration (PI), School of thoughts, Areas of application and Techniques available for PI, Onion diagram. Pinch Technology – An Overview: Introduction, Basic concept, How it is different than energy auditing, Role of thermodynamic laws, Problem addressed by Pinch technology. Key Steps of Pinch Technology: Data extraction, Targeting, Designing, Optimization- Supertargteing. Basic Elements of Pinch Technology: Grid diagram, Composite curve, Problem table algorithm, Grand composite curve. Targeting of Heat Exchanger Network (HEN): Energy targeting, Area targeting, Number of units targeting, Shell targeting, cost targeting. Designing of HEN: Pinch design methods, Heuristic rules, Stream splitting, Design of maximum energy recovery (MER), Design of multiple utilities and pinches, Design for threshold problem, Loops and Paths. Heat Integration of Equipments: Heat engine, Heat pump, Distillation column, Reactor, Evaporator, Drier, Refrigeration systems. Heat and Power Integration: Co-generation, Steam turbine, Gas turbine.

Course Objectives

  1. To learn process integration with regard to an efficient use of energy and enhance energy efficiency
  2. Development of specific quantitative skills that will be useful in a wide range of processes in the design of inherently energy-efficient plants

Course Outcomes

The course contains the following deliverables:
1. Understand process integration and intensification
2. Find the minimum heating and cooling requirements for a process
3. Identify existing non-optimal arrangements of heat exchangers
4. Find lower cost solutions for arrangements of heat exchangers
5. Proficiency in energy efficient, environmentally benign and economic design of processes

Essential Reading

  1. V.U. Sheno, Heat Exchanger network synthesis, Gulf Publishing Co, USA , 1995
  2. J.M. Douglas, Conceptual Design of Chemical Process, McGraw Hill, New York , 1988

Supplementary Reading

  1. B. Linnhoff, D.W.Townsend, D. Boland, G.F. Hewitt, B.E.A. Thomas, A.R. Guy and R.H. Marsland, A User’s guide on process integration for the efficient use of energy, Inst of Chemical Engineers, London , 1982
  2. R. Smith, Chemical Process Design, McGraw Hill , 1995