Scarab-Saffron Development Project, Case study of the materi

Abstract:
MEG Recovery Unit for Scarab/Saffron development project is the first
application in gas production. The Mono Ethylene Glycol Recovery Unit
(MEG) recovers MEG from Water/MEG stream and removes salts and other
contaminants. MEG Recovery Unit Equipment Design Criteria were
designed for two parallel trains A & B, each train is capable to treat 500 bbl
MEG, 1500 bbl water and 9 ton salt. The MEG unit is a combination of two
unit operations; MEG Recovery unit is normally applicable in the oil and gas
industries that is applying distillation technique, while the new technology is
salt treatment and handling. The MEG Unit material selection is made to be
suitable for the entire design life which is 25 years, the materials for MEG
Recovery Unit have been selected among the available corrosion resistance
alloys, where requested by the service and ambient conditions. Therefore all
the parts of the MEG unit that are in saline service are in either (2205
duplex, AISI 316L) and in Inconel alloy 625 related to operating
temperature. This case study focused at Inconel alloy 625, which is selected
for salt service and their operation problem occurred during the construction
and operating conditions.