on our FCC unit, after TA we change MEA with N-MDEA. After that we notice foaming of N-MDEA. Some hydrocrabons are mixed with N-MDEA.
We drain N-MDEA, and we circulate with condensate in order to wash the system.
We try start up amine section, but we observe foaming.
Do you have some similar experience with foaming of N-MDEA solution? Do you have some advice ot tip how to solve this problem.