How does glycol contactor work

The process schematic of the gas dehydration unit GDU is given in Fig. It consists of a contactor tower having eight bubble cap trays for absorption of water vapor from gas by using TEG, and a TEG regeneration unit. The operating data of one of the train is given in table 1.

Many workers mention normal glycol consumption rate of In another analysis Ghoshal indicated equilibrium glycol loss of In similar work, Weininger recommended to carry out an audit of the unit if glycol consumption exceeds 7. All these parameters therefore indicated that present plant of Bombay offshore requires a thorough audit of GDU to identity the causes of glycol loss and prevent the same.

Glycol losses from GDU are grouped into three categories — Vaporisation. Vaporisation loss takes place both in glycol contactor as well as in glycol still of regenerator. The vaporisation loss in glycol still is due to higher still temperature and high stripping gas rate. The carry over loss in absorber is generally due to foaming, high gas velocity and inadequate mist eliminator at gas outlet.

The carryover loss in glycol still is due to high stripping gas velocity and foaming in still column. Sign In or Register. Advanced Search. Sign In.

Skip Nav Destination Proceeding Navigation. Close mobile search navigation. All Days. Previous Paper Next Paper. Gas dehydration prevents oxidative reactions between water and metal pipes.

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These cookies do not store any personal information. Non-necessary Non-necessary. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. A glycol dehydration unit helps to remove water from natural liquids and gas generated from a reservoir. In a glycol dehydration unit, the glycol fluid must be clean and as close to its original, pure state as possible.

Contamination due to hydrocarbons and other particulates reduces its ability to absorb water from the gas stream. It also adversely impacts the performance of the glycol regeneration process. This is why filters are typically used to remove the impurities. Activated carbon filter and a particulate filter are the two common types typically used in the device. Read on to learn more about them. As the name indicates, this filter helps to remove any solids that the glycol picks up from the trays and contact with the gas stream.

It is the first filter the glycol comes into contact after leaving the glycol contactor. A particulate filter is installed between the activated carbon filter and the glycol reboiler accumulator coil. It is a sock or pleated cartridge type filter that has a simple operation. When the differential pressure increases across the filter, it is a sign that it is loading up with solids.