Gas Processing &
Treating Solutions

Amine Gas Treating

Remove acid gases. Define the right balance.

Amine treating uses a circulating solvent to absorb H₂S and/or CO₂ from natural gas. The rich solvent is regenerated and returned to the absorber, linking gas quality directly to circulation, heat input and solvent condition. Selection starts with the feed composition and the required treated-gas specification. Selective H₂S removal and bulk acid-gas removal can call for different solvent and equipment decisions. Absorber, regenerator, heat exchange and acid-gas handling should be evaluated together, with attention to operability across the expected feed range.

Design considerations

• Feed composition and acid-gas loading
• Treated-gas targets and solvent selection
• Regeneration duty, utilities and acid-gas destination

TEG & Molecular Sieve Dehydration

Control water. Protect downstream processing.

Gas dehydration reduces water content to suit transport or downstream processing. TEG systems absorb water into a liquid glycol stream that is subsequently regenerated. Molecular-sieve systems adsorb water on a solid desiccant, with beds cycled between drying and regeneration. The appropriate route depends on the required water content or water dew point, feed contaminants and operating envelope. Low-temperature processing can require deeper drying than a pipeline application. Regeneration, switching arrangements and downstream conditions therefore form part of the selection, rather than being treated as separate details.

Design considerations

• Required water content or water dew point
• Regeneration and bed-switching arrangements
• Feed contaminants and downstream temperature

Hydrocarbon Dew Point Control

Manage liquid dropout in the gas stream.

Hydrocarbon dew point control separates a portion of the heavier hydrocarbons from natural gas to limit liquid dropout under the expected downstream conditions. Cooling and separation are central to this process. Mechanical refrigeration and Joule–Thomson expansion are approaches to assess, with available pressure and feed composition influencing their suitability. The assessment also considers hydrate prevention, recovered-liquid handling and the temperature and pressure range of the receiving system. Hydrocarbon dew point is a separate specification from water dew point; both require appropriate attention in the overall process design.

Design considerations

• Inlet composition, pressure and available pressure drop
• Hydrocarbon dew-point target and downstream envelope
• Hydrate management, liquids handling and utilities

Condensate Stabilization

Prepare condensate for storage and export.

Condensate stabilization removes lighter components to bring liquid vapor pressure toward the specified storage or export requirement. Process selection depends on feed composition, pressure, temperature and variability, as well as the destination of the stabilized liquid. The overhead vapor needs an identified handling route, while heating and cooling duties influence utility demand and equipment integration. Evaluating the operating range is as important as the nominal design case. Stabilization focuses on the specification of a condensate product; it is distinct from fractionating a mixed NGL stream into several specified hydrocarbon cuts.

Design considerations

• Feed composition and operating variability
• Product vapor-pressure specification
• Overhead-vapor handling and heat duty

NGL Fractionation

Separate mixed liquids into specified products.

NGL fractionation uses distillation to separate a mixed hydrocarbon liquid into specified product cuts. Depending on the feed and required products, the scope may involve deethanizing, depropanizing, debutanizing or a selected combination of these services. A complete fractionation train is not necessary for every application. Column operating conditions, reboiler and condenser duties, and product handling need to be developed against the agreed product specifications. Heat integration and utility availability can influence the configuration, while feed variability affects both the design basis and expected operating flexibility.

Design considerations

• Feed composition and required product cuts
• Purity, recovery and product handling requirements
• Reboiler duties, cooling and heat integration

LNG Liquefaction

Bring natural gas into liquid form.

Liquefied natural gas (LNG) is produced by cooling suitably pretreated natural gas to cryogenic temperatures. The liquefaction configuration is developed around the feed composition, production objectives, available energy and the intended storage or transport route. Pretreatment, refrigeration and boil-off gas handling need to be considered alongside the liquefaction package. Storage, loading and utility interfaces are defined as part of the project scope, rather than assumed to be included in every skid.

Design considerations

• Feed quality and pretreatment requirements
• Liquefaction duty, refrigeration and utility availability
• Storage, loading and boil-off gas interfaces

CNG Compression Skids

Prepare gas for high-pressure delivery.

Compressed natural gas (CNG) packages raise the pressure of conditioned gas for storage, transfer or distribution. Compressor selection and staging depend on the inlet pressure, gas composition, required flow and discharge-pressure target. Interstage cooling, liquid separation, controls and protective systems form part of the package assessment. Gas conditioning and the interfaces with downstream storage or filling equipment are addressed against the intended application. The configuration is developed for the required duty and operating range; a single compressor arrangement does not suit every service.

Design considerations

• Inlet conditions, gas quality and operating range
• Discharge pressure, staging and cooling duties
• Controls, protection and storage or filling interfaces

3-Phase Separation

Separate gas, oil and water. Coordinate what comes next.

Three-phase separation divides a mixed production stream into gas, hydrocarbon liquid and water so each phase can be routed to its next processing step. Separator configuration and internals are evaluated around pressure, temperature, phase flow rates, fluid properties and expected variations in production. The wider package considers gas handling, oil transfer and produced-water interfaces, together with level control and protection against liquid carryover or gas carry-under. Where required, heating can assist liquid handling and separation by reducing viscosity. Heat integration is assessed across available hot and cold streams to recover useful energy while maintaining the temperature control and operating flexibility the facility needs.

Design considerations

• Gas, oil and water rates, fluid properties and feed variability
• Separation performance, phase controls and downstream handling
• Heating duty, fouling potential and practical heat-recovery opportunities

Utility Systems

Support the process with dependable utilities.

Utility systems provide the supporting services required by process equipment. The scope can include fuel gas conditioning and pressure control, heating packages, chilled-water generation and circulation, and heat-medium storage and pumping. Fuel gas treatment is defined against the requirements of the consuming equipment, including liquid removal and any necessary temperature or contaminant control. Thermal systems are developed around supply and return temperatures, heat loads, flow requirements and the properties of the selected medium. Storage, expansion arrangements, circulation pumps, controls and protective functions are coordinated with the connected equipment. Heat recovery and integration can be evaluated to reduce external heating or cooling demand where practical, with attention to startup, turndown, maintenance and the availability of each utility.

Design considerations

• Utility specifications, normal and peak loads, and operating range
• Fuel gas quality, heating and cooling duties, and circulation requirements
• Storage, expansion, pumping, controls and process-package interfaces