Hey everyone, thanks for your help in advance.
The plant I am currently designing involves distillation and a flash drum for the removal of 'waste byproducts'. This waste can be handled by a waste treatment site for a cost depending on the composition.
Situation 1: The waste contains less than 20 wt% component A, less than 5 wt% component B and less than 1 wt% component C. Cost for disposal is set at $0.50/kg.
Situation 2: Any of the above conditions are not met, the cost for disposal is set at $1.50/kg.
My current waste specs contain 0kg of component A, 0kg of component B, 4.9kg of component C, and 25kg of another undesired component that has no specified limits. As such the waste falls under situation 2, as component C comprises roughly 16 wt% of the total waste.
Is there any way to get the waste specs to fall under situation 1? Addition of other components not listed is acceptable, however every combination I attempt to reduce component C's wt% leads to such excessive volumes that the cost reduction becomes meaningless.
I've racked my brain for hours, and my teacher seems to be of little use in helping my train of thought. Any and all ideas are appreciated.
Thanks for your time!