2011 S nthe nt hesi sis s Ga Gas Se Semina mi narr – Mar arita ri ta Second co nda ary Reform fo rme er November 2–4, 2011
Typical NH3 Process Flowsheet Steam
Air
HC Feed
H TS
P u r if ic ati on
P r e R efo r m er
Primary Reformer
S eco n d ar y R efo r m er
C O2
Reforming
A m m o n ia
H T CO S h if t
L T C O Sh i ft
C O 2 Rem o v al
Met han ati o n
NH3 Synthesis Loop
Overview
•Chemistry a a ys an
oa ng
• •Common Problems/Troubleshootin
Chemistry
Secondary Reforming: Chemistry 1) Allows introduction of N2 (via Air) required to make NH3 2) Combustion of O2 generates heat which results in additional reforming resu ng n re uce purg ng rom e yn oop