Natural gas produced from a reservoir contains water that can cause upsets, fouling, corrosion in downstream equipment, generate hydrates formation, and can also condensate and freeze during the liquefaction process.
It is therefore mandatory to go through a dehydration step just after the acid gas removal. A glycol unit (TEG, MEG, TREG) will ensure that the water vapor entrained in the gas is absorbed in the solvent.
PARKER HANNIFIN PROVIDE
- Solids separation combined gas coalescing solution on the wet gas to absorber column
- Liquid filters and hydrocarbon adsorbers on the rich glycol loop out and in the reboiler
- Gas coalescers on dry gas
The wet natural gas stream enters the bottom of a contact tower (absorber) while a lean, water-free glycol is introduced at the upper section of the contactor. The glycol absorbs the water from the natural gas and the rich, water-loaded glycol is carried out the bottom of the absorber, while the dry natural gas leaves the top of the absorber and goes to further gas processing (to a gas plant or pipeline).
The rich glycol leaving the contact tower is being regenerated going through :
- A flash separator removing coarse impurities, liquid hydrocarbon, high content hydrocarbon gas out of the glycol and decreasing the pressure
- A stripping / distillation column called reboiler working between 100-200°C, where water is distillated out to recover glycol high purity
- A flash tank
- A series of particulate filter, protecting an activated carbon adsorber for liquid hydrocarbons degradation products removal
The hot, lean glycol is cooled down in two steps, repressurized and fed back to the top of the contact tower.
Gas Coalescer
Series 77V, Spartan PuraSep
The 77V uses advanced coalescing cartridges to efficiently capture aerosolised mist and small liquid droplets in gas streams. A variety of cartridge performance levels are offered to handle different service needs that can provide liquid effluent amounts from 50 PPB all the way down to 2 PPB. The 77V a great choice for removal of low surface tension liquids, such as lube oil and NGL with minimal solids and liquid loading.
Horizontal Gas Filter-Coalescer
Series GEM2, Peach Gemini Purasep 2
Providing superior performance in a remarkable trouble-free design, the PEACH Gemini PuraSep® Series GEM 2 is a compact and highly efficient solution for removing bulk liquid from gas streams. It can lower capital investment spend by eliminating the need to buy two pieces of equipment in instances where a gas filter-separator is required to protect a gas vertical coalescer from becoming plugged with solid contaminant.
Particulate Liquid Filter Highflow
Series 55, XtreamPure
High performance and smaller vessel footprint are important to maintaining a clean liquid stream that protects process equipment and provides quality final products. The large format elements significantly reduce the required number of traditional 2.5-inch diameter cartridges enabling smaller vessel diameters and less downtime during change outs.
Activated Carbon Adsorber
Series 10FB & 10, Carbomax
The Series 10 vertical carbon adsorber vessel is designed for hydrocarbon removal from a liquid stream by use of activated carbon canisters. The series 10 is an effective and economical method of adsorbing dissolved impurities from water, amines, glycols and other process fluids which could cause foaming, odour, contaminant build up and other process problems. .
Two Stage Depth Filter & Carbon Block Adsorber
Series 14, XtreamSorb
The XtreamSorb Series 14 two-stage filter-adsorber takes liquid separation to the next level of performance providing solutions to reduce operating costs and improve product quality.
Upgrade your Midstream Oil & Gas Process to the Next Level
Dive deeper into our filtration solutions for midstream applications including:
- Acid gas removal
- Mercury removal
- NGL recovery
- NGL fractionation
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