Tower Equipment Technology Q&A

Author: Liang Lijun
Publisher:
Publish Date: 2005-09-01
Features:
1. Basic Knowledge of Tower Equipment
1.1 What is a tower? What are its main components?
1.2 How can towers be classified by structure?
1.3 How to choose between tray towers and packed towers?
1.4 What are the commonly used types of tray towers in China? What types of trays have been developed and used in recent years?
1.5 What are the main components of a tray?
1.6 Based on overflow methods, how can trays be classified?
1.7 What characteristics should a high-performance tray have?
1.8 What are the main types of trays?
1.9 What is a sieve tray?
1.10 What are the advantages and disadvantages of sieve trays?
1.11 What is a tongue tray?
1.12 What are the advantages and disadvantages of tongue trays?
1.13 What is a bubble cap tray?
1.14 What are the advantages and disadvantages of bubble cap trays?
1.15 What is a floating valve tray?
1.16 What are the advantages of floating valve trays?
1.17 What are the structural characteristics of floating valve trays? Please provide an example and illustration.
1.18 What does the model designation of floating valve trays mean?
1.19 The F1 type floating valve is now standardized in China. What is the significance of its model?
1.20 Briefly describe the structure of a packed tower.
1.21 What are the main auxiliary equipment of packed towers?
1.22 What is the function of packing in a packed tower? What are the general requirements for packing?
1.23 Packing comes in many types, which can be broadly classified into two categories based on their stacking method. What are the common types of packing in each category?
1.24 Packing is the element for gas-liquid contact in a packed tower. Currently, there are numerous types and specifications of packing. What are the directions for improving packing?
1.25 When selecting packing for a packed tower, what factors should be considered?
1.26 What is tray efficiency? What are its influencing factors?
1.27 What are the abnormal operating phenomena of towers?
1.28 What is entrainment? What are its influencing factors?
1.29 What is flooding? What are its hazards? What are the causes? How can it be prevented?
1.30 What is leakage? What are its drawbacks?
1.31 What is bubble entrainment? What are its drawbacks?
1.32 How does the installation of a tower affect rectification operations?
1.33 How is the height of a tower's skirt determined?
1.34 What is the function of the sealing in tray tower installation?
1.35 What are the key inspection items for tower equipment during shutdown?
1.36 After the plant shutdown, when cleaning impurities inside the tower, should the manway be opened from top to bottom or bottom to top? Why?
2. Towers in Atmospheric and Vacuum Distillation Units
3. Towers in Catalytic Units
4. Towers in Hydrogenation Units
5. Towers in Continuous Reforming Units
6. Towers in Delayed Coking Units
7. Towers in Hydrogen Production Units
8. Towers in Polypropylene Units
9. Towers in Gas Utilization Units
10. Towers in Ammonia and Urea Units
11. Towers in Other Units