Application:
Acid Gas Dehydration
Location:
07-35-67-07 W6M
Objective:
Acid gas injection from a new plant into a high pressure, sour, dry, gathering pipeline to be converted to pure sulphur at an alternate location. Target acid gas water content much lower than normal to suit pipeline operating conditions.
Design Challenges:
- Allowable outlet content of 4 lbs/MMSCFD which is extremely low relative to saturation.
- Purification of inlet gas and glycol.
- Corrosion control.
- Minimize and control fugitive- and operator-induced emissions.
Compass Solution:
- Packed stripping column with 2-3 stages, hot stripping gas, maximum reboiler temperature, elevated circulation rate.
- 16 tray contactor with gas and liquid distribution and mist elimination.
- Fine filtration of inlet gas and rich glycol. 316/316L SS material throughout.
- Flange connections throughout, instrument isolation and vent throughout.
Major Equipment Specifications
Vessels
- 20” OD S/S inlet coalescer
- 36” contactor with 16 high capacity valve trays
- 30” OD glycol flash vessel
- 26” OD glycol carbon filter
- 10” OD glycol particle filter
Exchangers
- 0.42 MMBTU duty, BEM gas/glycol exchanger
- 0.65 MMBTU duty, BEU lean/rich exchanger
Regenerator
- 48” OD reboiler
- 30” OD accumulator
- 16” OD still column
- 10” OD stripping column
- 14” OD, 1.2 MM Btu/hr natural gas fired flame arrested fire-tube
Other Features
- (2) 100% 10 HP Rotary Glycol Charge Pumps, 8 USGPM @ 600 psig discharge pressure
- Lean glycol cooler, 0.11 MMBTU/hr, aerial type with 24” fan
Control Panel:
Profire 2100 BMS
COMPASS MODEL NO: GLYCOL DEHYDRATOR