Very cool!
What's in that murky yellow glass container?
It's not a process system I am familiar with but it is likely a decanter or sight glass for formic, sulphuric or phosphoric acid. I would have to run the line and find out what vessels it heads back to, to check.
Most of the acids are basically a clear liquid but end up a mirky green in some circumstances, like as shown.
I would let you guys know a bit more about the plant, like what it produces, but I shouldn't be disclosing anything really!