MIANCH
Chemical
- Aug 8, 2002
- 162
Hi,
we have Low pressure TEG dehydrator which was designed for 245 psig and 185 MMSCFD. over the years field declined and production has been reduced to 70 MMSCFD and pressure to 140 psig & temperature is 80 F. gas is bringing very high water say 190 lb/mmscf at these conditions.
Bubble caps are installed in glycol absorber column (16 trays, 4' dia & 44' height. we are facing problem for column efficiency. our target moisture is 18 lb/mmscf. i have calculated glycol circulation rate as per GPSA and superficial velocity. superficial velocity has been also reduced. now i want to see relationship between gas velocity and pressure in absorber performance. can someone explain, is retention time of glycol also changed and its affects on performance.
Best Regards
we have Low pressure TEG dehydrator which was designed for 245 psig and 185 MMSCFD. over the years field declined and production has been reduced to 70 MMSCFD and pressure to 140 psig & temperature is 80 F. gas is bringing very high water say 190 lb/mmscf at these conditions.
Bubble caps are installed in glycol absorber column (16 trays, 4' dia & 44' height. we are facing problem for column efficiency. our target moisture is 18 lb/mmscf. i have calculated glycol circulation rate as per GPSA and superficial velocity. superficial velocity has been also reduced. now i want to see relationship between gas velocity and pressure in absorber performance. can someone explain, is retention time of glycol also changed and its affects on performance.
Best Regards