High-capacity trays hike demeth capacity, efficiency at two Middle East gas plants

12/13/2004
Replacing conventional valve trays with high-capacity trays in six demethanizer columns at Saudi Aramco's Shedgum and 'Uthmaniyah gas plants eliminated a liquid load restriction in the column top section.This allowed the top section of the column to handle 50% additional liquid load compared to the previous maximum load without deterioration of the column performance. With the new trays the columns have also shown improved separation efficiency that resulted in a 3-4% increase in NGL production.The combination of these two effects produced a payback period, on the cost of the revamp, of less than 1 month. The new trays were installed on existing tray supports without additional in...
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