PEDD

1. Why PEDD
Mihir P. Shah
DDU, Nadiad

2. Let’s Take up a job……..
• Production of Formic Acid.
– There are number of questions
one has to answer before taking
up this job.
– Can one answer these questions?

3. Questions to be answered
• Why to produce?  GCT/Market need
• How/ which way to produce?  GCT
• Whether to go for batch or continuous plant?  PEDD  Process Design
• How to get raw materials? Suppliers?  GCT II
• Process description?  PEDD  Process Flow Diagrams  PBD, PFD, P&ID
• What should be capacity of plant?  PC/PEDD
• How to do MB and EB for selected capacity?  PC
• What is requirement of Utility for the selected capacity?  HT/MT/CET/ FFO
• How to select equipments?  PEDD  Process Design
• How to design and install minor and major equipments?  PEDD
• What about safety of personal and equipment for selected plant capacity? 
CEMS
• Control Aspect of Plant  IPC
• What about Effluent Generated and Design of ETP for selected Capacity?  EE
• Where to Erect the plant, Plant Location with justification?  CEPDE
• Where to locate which equipment? Plant Layout with justification  CEPDE
• What is total cost of project?  PEDD/CEPDE
Think of market capture and
applications : Preservatives and
cleaning agent
Technologies and Licensers:
1. Hydrolysis of CO  GNFC
2. Hydrolysis of Methyl Formate  Semsung Engg.
3. Indirect Hydrolysis of Methyl Formate  BASF
Required Market Survey:
1. Transportation
2. Production
3. Pre-refinement Balances:
1. MBWR
2. MBWithR
3. EB
Utilities:
Air , Water, Boiler, Cooling Tower,
Chilling Requirement,
Compressor, Vacuum system,
Electricity
1. Depends upon capacity & Raw Material.
2. Selection normally required deep understanding of
subject and huge experience
3. Beyond the scope of the subject
Designing:
1. Process Design
2. Mechanical Design
Selection of MoC
Avoid Failure due to
accident
Identification of Control Variables
Implementation of Controllers
PID
Based on Land available, Raw
Material and Product market, Labor
availability
Cost:
1. Capital Cost
2. Operating Cost
3. Maintenance Cost
4. Calculation of Depreciation,
Payout period and Profitability
analysis

4. Block Diagram for manufacturing of
Formic Acid

5. Process Flow diagram for
manufacturing of Formic Acid

6. What is the need of PEDD?
• To
– Decide whether to go for batch or continuous
process
– Represent the process in proper way
– Selection of equipment
– Thermal design of equipment
• Based on process condition
– Mechanical design of equipment
• Based on mechanical and safety consideration

7. Conclusion
• We need PEDD as a part of curriculum.