Industrial pigging technology : fundamentals, components, applications

Pigs are snug-fitting plugs which are able to perform various maintenance tasks such as cleaning or removing deposits or blockages in pipe and pipeline systems from the inside. A gaseous or liquid propellant is used to push the pig through the system. This strategy avoids rinsing loss of valuable product, provides reduction of adverse environmental impacts, and gains high efficiency for less investment. The book describes clearly and methodically the important basic equipment required for the planning and design of pigging units. Many practical examples are shown for the operation of industrial pigging units, drawn from the authors' longtime experience in this technology. In this form and scope the book is an unrivaled presentation of this technology. Engineers and chemists who plan, construct, operate and maintain production plants in the chemical, food, cosmetics, pharmaceutical and petrochemical industry will find an invaluable source of advice and reference for pigging units. Content: Chapter 1 Introduction to Pigging Technology (pages 1–7): Chapter 2 Pigging Units and Pigging Systems (pages 9–20): Chapter 3 Pigs (pages 21–47): Chapter 4 Valves (pages 49–74): Chapter 5 Pipework (pages 75–97): Chapter 6 Additional Equipment (pages 99–103): Chapter 7 Propellants (pages 105–112): Chapter 8 Control System (pages 113–137): Chapter 9 Decision Criteria for Pigging (pages 139–152): Chapter 10 Cleaning Degree after Pigging (pages 153–172): Chapter 11 Pig Wear (pages 173–180): Chapter 12 Medium?Specific Characteristics (pages 181–187): Chapter 13 Checks before Start?up (pages 189–195): Chapter 14 Experiences with Pigging Units (pages 197–204): Chapter 15 Applications in the Chemical Industry (pages 205–223): Chapter 16 Pigging Units for Sterile Technology (pages 225–236): Chapter 17 Pipeline Pigging (pages 237–257): Chapter 18 Pigging of Pneumatic Conveying Lines for Bulk Materials (pages 259–271): Chapter 19 Legal Requirements (pages 273–278): Chapter 20 Safety and Occupation Health (pages 279–294): I: FUNDAMENTAL PRINCIPLES OF PIGGING TECHNOLOGY. 1. Introduction in Pigging Technology. 2. Pigging Units and Pigging Systems. II: COMPONENTS. 3. Pigs. 4. Valves. 5. Pipework. 6. Additonal Equipment. 7. Propellants. 8. Control System. III: APPLICATIONS. 9. Decision Criteria for Pigging. 10. Cleaning Degree after Pigging. 11. Pig Wear. 12. Medium-Specific Characteristics. 13. Checks Before Start-Up. 14. Experiences_with Pigging Units. 15. Applications in the Chemical Industry. 16. Pigging Units for Sterile Technology. 17. Pipeline Pigging. 18. Pigging of Pneumatic Conveying Lines for Bulk Materials. IV: LAW AND REGULATION. 19. Legal Requirements. 20. Safety and Occupational Health. V. APPENDIX. References. List of Chemical Resistances. Description of Material Codes. Properties of Solvents. Buyer's Guide. Suppliers Names and Addresses. Index