|
8.0 |
Summary of Commercial Plant Design |
8-1 |
|
8.1 |
Introduction |
8-1 |
|
8.2 |
Basic Criteria for Coal Gasification |
8-3 |
|
8.3 |
Demonstration Plant Design Constraints |
8-4 |
|
8.4 |
HYGAS Demonstration Plant Description |
8-5 |
|
|
8.4.1 |
Solids Handling |
8-11 |
| |
8.4.1.1 |
Coal Handling and Storage |
8-11 |
|
8.4.1.2 |
Coal Preparation |
8-11 |
|
8.4.1.3 |
Coal Pretreatment |
8-11 |
|
8.4.1.4 |
Char Feed Preparation |
8-21 |
|
8.4.1.5 |
Reaction Section |
8-22 |
|
8.4.1.6 |
Char Recovery |
8-22 |
|
8.4.2 |
Gasifier Reactor and Reaction Section |
8-22 |
|
8.4.3 |
Main Stream Gas Treatment |
8-39 |
| |
8.4.3.1 |
Raw Gas Quench |
8-39 |
|
8.4.3.2 |
Shift Conversion |
8-43 |
|
8.4.3.3 |
Ammonia Scrub and Gas Preconditioning |
8-44 |
|
8.4.3.4 |
Acid-Gas Removal (Rectisol) |
8-44 |
|
8.4.3.5 |
Sulfur Clean-Up Guard Beds |
8-49 |
|
8.4.3.6 |
Methanation |
8-54 |
|
8.4.3.7 |
Product Gas Drying |
8-58 |
|
8.4.4 |
Process Section Environmental Control Units |
8-58 |
| |
8.4.4.1 |
Oil Stabilization |
8-58 |
|
8.4.4.2 |
Acid-Gas Stripping (Rectisol) |
8-62 |
|
8.4.4.3 |
Ammonia Separation (Phosam) |
8-62 |
|
8.4.4.4 |
Sulfur Recovery (Claus Plant) |
8-69 |
|
8.4.4.5 |
Incineration and Tail Gas Treatment |
8-69 |
|
8.4.4.6 |
Waste Water Treatment |
8-74 |
|
8.4.5 |
Utilities and Miscellaneous Support |
8-78 |
| |
8.4.5.1 |
Water Treatment |
8-78 |
|
8.4.5.2 |
Boilers and Power Plant |
8-78 |
|
8.4.5.3 |
Power Plant Stack-Gas Scrubbing and Limestone Slurry Supply |
8-83 |
|
8.4.5.4 |
Ash Handling |
8-83 |
|
8.4.5.5 |
Refrigeration Unit |
8-83 |
|
8.4.5.6 |
Inert Gas Generator |
8-85 |
|
8.4.5.7 |
Storage Tanks |
8-85 |
|
8.4.5.8 |
Mobile Equipment |
8-85 |
|
8.5 |
Manpower Estimate |
8-85 |
|
8.6 |
Project Schedule |
8-85 |
|
8.7 |
Suggested Areas for Design Improvement |
8-87 |
| |
8.7.1 |
Process Design Improvements |
8-87 |
| |
8.7.1.1 |
Generation of Hydrogen |
8-87 |
|
8.7.1.2 |
Pretreatment |
8-88 |
|
8.7.1.3 |
Improved Catalysts |
8-88 |
|
8.7.1.4 |
Acid-Gas Removal |
8-89 |
|
8.7.1.5 |
Clean Fuel for Boilers |
8-89 |
|
8.7.1.6 |
Total Water Recycle |
8-90 |
|
8.7.1.7 |
Ammonia |
8-90 |
|
8.7.2 |
Mechanical Design Improvements |
8-90 |
| |
8.7.2.1 |
Gasifier Vessel |
8-90 |
|
8.7.2.2 |
Dry Feed System |
8-91 |
|
8.7.2.3 |
Coal Crushing |
8-91 |
|
8.8 |
Conclusions |
8-91 |
| |
|
9.1 |
Discussion |
9-1 |
|
9.2 |
Bibliography |
9-2 |
