MDEADEAMEA - npc-rt.ir DEA MEA Scrubber Solution. Surge Drum Surge Drum Rich Amine Flash Drum Surge...
Transcript of MDEADEAMEA - npc-rt.ir DEA MEA Scrubber Solution. Surge Drum Surge Drum Rich Amine Flash Drum Surge...
MonoDiTri
O-H
SNHRSHNHR )(2)(2 2222
)(2)(2 22222 HSNHRSHSNHR
322222 )(22 CONHRCOOHNHR
)(2)(2 32222322 HCONHRCOOHCONHR
22222 )(2 RNHCOONRCONHR
MEA : HO-C2H4-NH2
DEA : ( HO-C2H4 )2=NH
( TEA : ( HO-C2H4 )3=N
( DGA : HO-C2H4-O-C2H4-NH2 )
DIPA : ( HO-C3H6)2=NH)
MDEA : ( HO-C2H4)2=N-CH3 )
680 F
( Alkanolamin Corrosion)
corrosion contributing factor
preventive measures
Flow in piping and vessels
Carbon steel3 ft / secStainless
steel5
8 ft / sec
Long Radius Elbow
Eliminate flow restriction
NPSHA
Cavitations
Control Valves
Flashing
Level
Level
Filtration
5 micron3 micron
Spare
Sock-type
bag or
(Guard filter
ReachH2S
ReachCO2Slip stream
filterLean
Reach
stress relieving
NACE / API
MEA
CO2
2OHCOCOH 2232
H2S
3)(22 HFeSSHFe
MEADEAMDEA
MEA
MEADEACO2
DegradationMDEA
CO2
H2S
MEADEAMDEA
MEADEAMDEA
DEAMDEAMEA
MEACO2
DEACO2MEADEAMDEA
CO2
CO2MEA
DEA DEA MDEA
MEADEAMDEAActivate
CO2
DegradationMEA
DEAMDEA
MEADEAMDEA
MEA DEAMDEAMDEA
(1)
342422242 )()(2 NHHCOHCarbamatONHCOHCOHCOMEANHHCOH
(2)32,
2422
3
NHCOHCHHONHHHOC OHFe
IR10
NGL 1200
MEA
DEA
MEA
H2S
0.657ppm
8ppm
MEA
MEA H2S
4ppm
MEA
H2S CO2
DEA
.
MEA 30
DEA
MEA
DEA
DEA
Rich
lean
MEA
Formate OxalateThiosulfate Thiocynate
Heat stable salts ( HSS )
HSS
HSS
HSS500ppm
HSS Heat Stable Salts
Corrosion Inhibitors
Splash
Make up water
make up
(Foaming
filteration
MEACO
10CO2COMEA
Reformer-1001
CO, CO2
MEA
CO2
COCarbon Steel
Cast Iron
P
1001AShut down
MEADischargeP-1001
Rich MEA
SS304
BallSS
P-1001Reducer1 ½
3
Casing Cover P-1001
MEA15%
Reformer
MEA O2=0.66% , H2O=6.14%CO,CO2,N2
MEA
HSS
HSS=8.8% Fe=130 ppm Cl=75 ppm
MEA
Fe+3
HSS
MEA
ErosionPassive
CO2MEA0.4 mol co2/mol mea
MEA
HSSMEAReclaim Make up
0.5%MEA2ml
0.150 mlMEA
0.8%
HSS Reboiler150 c
MEASS 316L
MEA
(NaO3V)0.05%
3micron
MEA
binderMEA
MEA
norit type Ro 0.8 , carbo tech type DG1/3
CO2MEA0.4mol co2 / mol mea
Rich meaSS316
PIPINGFitting Rich MEA
P 1001A/R
1. Understanding corrosion in alkanolamine gas treating plants written by M.S.Dupart , T.R.Bacon and D.J.Edwards GAS/SPEC Technology Group of the DOW chemical USA 1993
2. Texas gas plant faces ongoing battle with oxygen contamination . Andy sergeant GAS/SPEC Technology Group And Mike Howard Duke Energy Field Services
3. Metals Handbook Ninth Edition Volume 13 Corrosion 1990 4. Oxidative Degradation of Monoethanolamine by Susan chi and
Gray T.Rochelle University of Texas 2001
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