Dear friend,
the furfural odour in our refinery causes some problems around furfural unit.the following reasons may be cause it:
1-some furfural leaves the system in a small open sump with the steam from the stripper tower.
2-some furfural is discharged on the ground when there is an emergency shutdown.
3-the common sump at the refinery that receives the contaminated water , receives the salty water tank bottom from our refinery intake crude as well.

so please be requeted to advise me to eliminate the furfural odour in the refinery.
Thanks & best regards,
Maryam