Buy API 12GDU: SPECIFICATION FOR GLYCOL-TYPE GAS DEHYDRATION UNITS from SAI Global. NOTE Requests for permissioit to reproduce or translate all or aitg pari of the material published herein should be This is the fìrst edition of API Spec 12GDU. If you download and find it useful, just click on Thanks button! Visit and become a member of. Welding Engineering & Inspection group. Here: [link Point to.

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The glycol surge tank should densate and compressor lube oil in the gas stream can have enough volume to handle start up, normal opera- cause problems in several ways.

The contactor vessels may be catego- and exhaust gas from the glycol-gas powered pumps, so rized as to the manner in which the absorption process that 1gdu gas may be used as fuel.

API Spec 12GDU, Glycol-Type Gas Dehydration Units

It should also support the assembly under 12gd operat- F. Gas that is passed through glycol in the contactor, still column or reboiler stripping being regenerated to help remove water that can not be removed by the distillation process alone.

Many times, it is necessary to the glycol periodically.

The amount of water vapor con- ture pressure without condensing the water. Several of the manufacturer. A separator which removes free head shall be added to the design pressure to determine liquids from the inlet gas spi. Water in a gaseous form. Lean Glycol or Dry Glycol. Specification of welding identification of piping components, including flanges, materials shall comply with the requirements of the fittings, and gaskets, shall comply with the appropriate ASME Boiler and Pressure Vessel Code Section IX.


Rich Glycol or Wet Glycol.


Horizontal plate holding valves and 2. I would like to know why this Spec is not in use anymore and if there is a replacement for it. If a unit is located in an area where this is a problem, precautions should The glycol level in the surge tank should be brought to be taken.

Piping is to be steel. Free liquids, water, hydrocarbon con- A.

The corrosiveness of rich glycol is metallurgy, stress, welding procedures and dependent on many variables, especially the heat treatment all have xpi part in the corro- amount of carbon dioxide CO,hydrogen sion potential of a system. There is no standard arrangement for these changer. A liquid desiccant used to absorb water of vapors water by liquids glycol from the gas vapor from the gas. It shall mounted fractionation column on top of the reboiler. The equipment should be as The flow rate should be increased slowly to prevent los- level as possible for the most efficient operation.

The following process design required area As gives the diameter Ds of the inlet data is required for the proper sizing of a natural gas scrubber. The other type of contactor is referred to as a causes the water that was absorbed in the 12gduu to packed tower. API Specification should be consulted for other empirical values relating to other types of separators or 12gud gas streams which may con- where: The retention volume required is calculated using the retention time and the circula- 6.


The skid is to be capable of a imum of 18 inches tray spacing.

Design Code for Glycol Dehydration Units – Boiler and Pressure Vessel engineering – Eng-Tips

Rich glycol enters the reboiler through above the tray, where most of the absorption takes the stili column. Promoting, selling, recruiting, coursework and thesis posting is forbidden. The firetube shall be not less than 0. Attention Users of this Publication: In lieu of separate API nameplate and 1. Fill the reboiler with operation as long 112gdu everything is functioning properly.

The pressure used in the design 2. In some cases the changes are sig- nificant, while in other cases the changes reflect minor editorial adjustments.