WINNER OF THE ENGINEERING CATEGORY
MERIT AWARD – MANUFACTURING INNOVATION CATEGORY
MASSIVE CRYSTALLISERS AN ENGINEERING FEAT
Judges Comments:
For complex fabrication of a turnkey project as a world-class example of expertise in the industry with both the vessel shells and the internal spiral cooling coils having to be separately pressure tested
Crytallisers – Six off, 22 T each, 9m high and 4m in diametre in 304L
Manufactured in 304L, each unit features spiral cooling coils fitted to the dishes and the main body of the vessel, which were all required to be sealed and pressure tested. The final project installation, valued at R13 million, saw finned spiral cooling jackets on all six cylinders requiring 2500m of welding.
These very complex fabrication (total of six identical units) are each 9 meters high and 4 meters in diameter, and each have a weight of 22 tons. The material of manufacture is 304L and the final installation will be in Sasolburg.
There are spiral cooling coils fitted to the dishes and the main body of the vessel, all sealed and pressure tested. It also has six internal cooling coils, again all sealed and pressure tested.
All the cooling coils had to be tacked into place in specific intervals before finally being welded into place.
See process of the fabrication process at different stages to show the complexity of this fabrication. The value of this project was R13 million.
Bottom Dish
Spiral cooling coils, fins tacked Spiral cooling coils, fins tacked
Top Dish
Shell
Spiral cooling coils, fins tacked Shell with spiral cooling coil fins spaced and tacked
Shell with spiral cooling coil fins spaced and tacked
Spiral cooling jacket capped
Internal Coils
One of six internal cooling coils fitted
Bottom skirt
Vessel Assembly
Fitted with three of six internal cooling coils Top dishes fitted with all six internal cooling coils fitted flanges being added
Final Assembly
Completed Vessel with Skirt
The Finned spiral cooling jackets required 2500 m of welding.
Vessels Loaded for Delivery
