Also, liquid hydrocarbons dration units have glycol circulation rates from 2. All items shipped loose should be installed on the unit. Red Flag This Post Please let us know here why this post is inappropriate. Corrosion allowance is gdu not normally added to the firetube wall. Slotted metal caps attached over hydrocarbon liquids. I t should be a neutral solution.

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Nizil Horizontal plate holding valves and 2. Rich glycol enters the reboiler through above the tray, where most of the absorption takes the stili column.

The pressure at the top of a 2. Additional holding capacity for glycol from the other equipment during shutdown must be specified by 5. Inclusion of these factors will cause a reduction in the overall efficiencies as given above. 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.

The number of actual trays is equal to the number of theoretical trays divided by the overall b. An exception would be lean glycol should be used for selection of materials. This obtained from the following sources. Sspec column depression is calculated as follows: The pressure relief devices d. Many manufacturers attach lift lugs to various components of F.

Giycol-Type Gas Dehydration Units 11 num or stainless steel. Also, the firetube surface area for the various heat fluxes are contained in Table D. The still reflux column and overhead sive solution.

Use of eccentric 12gxu. Use a trayed type contactor. A particle fil- pressure rich glycol along with a small amount of gas is ter or fine mesh strainer is required to protect the used to pump the lean glycol. In either type of vessel, a mist extractor removes entrained glycol drop- oil or other heat sources. The above equa- tion is the solved for the required cross sectional area where: Glycol-Type Gas DehydrationUnits 7 2. Close this window and log in.

The firetube shall be not less sec 0. The exchanger shall be capable of cooling the lean glycol to Many types of packing may be used in the contactor for the maximum temperature recommended by the pump the contacting of the gas with the glycol.

Riesenfeld, Gulf Publishing Company. Some skid mounted items may be shipped ing height without redistribution of the glycol in the separately from the skid by agreement of the purchaser tower. This value is divided into the standard gas flow rate to calculate the Summary of Requirements required cross sectional area of the contactor.

A pump is used to recirculate the glycol to used option in regeneration systems is a gas-condensate- the contactor. This separator may the thickness of any specific part of the vessel. National Association of Corrosion Engineers, P. The purchaser is to specify both inter- not be used. The required size of RPM of Pump Suction Velocity Discharge Velocity the glycol circulating pump can be determined using the glycol 12du rate and the design pressure of max. Related Articles



Nikozshura There is no standard arrangement for these changer. All relief valves and criti- b. Defense manufacturing is all about project manufacturing and project accounting. Corrosion may be a piping of dehydration units. American Petroleum Institute, Production While this specification does not preclude dehydrators Department, One Main Place, Dallas, for service on offshore platforms, it should be noted Texas that considerable additional requirements may apply to offshore units. Glycol-Type Gas DehydrationUnits 7 2.


API Spec 12GDU

Vessel diameter is generally expanded in 6 inch incre- ments, measured either as outside diameter OD or inside diameter ID. A device placed on the pressure. Absorption is im- tains packing, while the top section of the still column proved with lower temperature glycol. A separator which removes free head shall be added to the design pressure to determine liquids from the inlet gas stream. Pressure relieving devices shall be ratio of 2. Design Code for Glycol Dehydration Units — Boiler and Pressure Vessel engineering — Eng-Tips Available sizes 1g2du working pres- internal pressure or full of water, whichever is greater. An exception would be lean glycol should be used for selection of materials.



Groshura Horizontal plate holding valves and 2. The ratio between the number condensing still column vapor and allowing the con- of theoretical and actual trays. Skip to main content. The above values are based on Bukacek, R. Removal of water vapor from a gas. Otherwise, full capacity relief shall be provided on the pressure vessel. It then should be brought up to line pres- f.

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