Whale Solubles Recovery Plant
The oil was tapped off from the settling tanks and the middle layer (glue water) went into glue water separators which removed the oil. After the separation the liquid was pumped up to the solubles plant and then onto a three-stage evaporator that solidified the liquid. Within the liquid, a lot of very fine solids are found, this was liquified to 60% solids and the water was evaporated back through the cooling tower and returned to the ocean as clear water.
The 60% solids were pumped through the roller dryers, that were steam heated. The liquid was forced between two rollers taht were very close together, side plates prevented liquid from running out.
The liquid was tried to a treacle like consistency and then was moved to the hammer mill, where it was ground finely to become soluble meal with a protein content of up to 86%.
Sold to Germany, Japan and locally it was used as stock feed additive and poultry food. The raw meal was too high in protein to be used neat and was therefore broken down with other products. If left unsealed the product would quickly return to a glue like state and proper storage and shipping was essential.
The average 14m whale would produce approx. 2.5 tons of solubles.