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Dehydration

Koch-Glitsch has the experience and equipment to assist Gas Processors with their Dehydration Needs. Whether the issue is capacity, glycol carryover, low dew point depressions, or offshore applications, Koch-Glitsch can provide the process and equipment solution.

Equipment | References | Case Studies | Technical Papers | FAQ

References
Koch-Glitsch has extensive references for Glycol Contactors. A partial reference list representing a small fraction of our natural gas dehydration installations is included below. Whether it is on shore or offshore Koch-Glitsch has the right equipment.

Location Diameter (mm) Equipment
France 2415 Trays
France 2450 Trays
France 2750 Trays
Shanghai 2200 Trays
Alaska 4877 Structured Packing
Canada 3505 Structured Packing
Canada 1219 Structured Packing
Nova Scotia 1930 Structured Packing
Offshore 292 Structured Packing
Offshore 1067 Structured Packing
Offshore 914 Structured Packing
Offshore 1067 Structured Packing
Offshore 1372 Structured Packing
Saudi Arabia 3048 Structured Packing
Thailand 1524 Structured Packing
US 1219 Structured Packing
US 1015 Structured Packing
US 509 Structured Packing
US 3048 Structured Packing


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Case Studies
Glycol Contactor Structured Packing Reduces Capital Cost and Improves Capacity - Project Report 230

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FAQ

Q: What are the advantages of structured packing in TEG Contactors as compared to trays?
A: Structured packing offers reduced column diameters and vessel height to process a given gas rate. Gas handling capacity improvement can range from 50-100% depending on the size and configuration of an existing trayed column. Structured packing is less susceptible to static tilt or motion associated with offshore platforms.

Excessive overhead glycol losses are typically associated with trayed contactors. Overhead glycol losses, are dramatically decreased after a packing retrofit. With FLEXIPAC® HC® packing, the structured packing geometry duplicates the geometry of a vane-type mist eliminator, and with its crimp modifications minimizes localized gas velocity gradients and effectively redirects the accumulated liquid back down into the column.

Q: Which liquid distributor is best suited for TEG Contactors?
A: As most Contactors are designed for relatively low liquid rates (glycol circulation rates of 3 gallons/lb. of water removed), and high vapor F-factors, a high efficiency distributor is a must. Trough liquid distributors with drip tubes are optimum for this application. This distributor is especially suited for TEG Contactors to provide uniform coverage across the column cross-sectional area, while the individual drip points minimize glycol carryover.

Q: Why not use random packing in the Contactor?
A: Structured packing offers improved efficiency over random packing at the low liquid rates due to its superior wetting characteristics and fixed geometric structure. Structured packing is also less susceptible to channeling and maldistribution that can be caused by static tilt or motion associated with offshore platforms.

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