At the rig, natural gases are nearly always saturated with water. When water-saturated natural gas flows in a pipeline the following problems can occur:
Ideally dehydrating the gas by heating, chemical addition, solid desiccant and membrane dehydration mitigates these problems and improves safety. GENERON offers the following efficient and cost effective solutions for process gas:
In GENERON® membrane gas dehydration systems, the feed gas is filtered to remove any trapped liquids and aerosols. The gas then enters the GENERON® membrane filters, where the H2O, CO2 and H2S permeate through the membrane. The non-permeated gas, mainly CH4, remains at process pressure and becomes the product gas.
In this system, we are cooling natural gas in the presence of inhibitors. The most popular inhibitors are ethylene glycol (EG), diethylene glycol (DEG), and methanol (MeOH). A gas stream leaving a Low Temperature Separator (LTS) should be considered water saturated at the separator temperature and pressure. Conversely, the water dew-point of the gas is reduced to the temperature in the separator.
There are several solid desiccants that possess the physical characteristics to adsorb water from natural gas. These desiccants generally are used in dehydration systems consisting of two or more towers, and utilize regeneration equipment. One tower is on-stream, adsorbing water from the gas, while other tower is being regenerated and cooled. The towers are switched just be-fore the on-stream tower becomes water saturated.
GENERON sales and engineering professionals will help you choose the right system for your specifications and project. Please call one of our engineering professionals at +1.713.937.5200 or using our online form.
GENERON facilities are ISO 9000 Certified and follow NEC/CEC (USA & Canada), ATEX (Europe), AS/NZS (Australia), ICECx (Worldwide) explosion protection requirements. Our ASME vessel shop builds all our columns and separators in-house which allows single source accountability.