Definition:
A process that removes heavier hydrocarbons from natural gas to prevent condensation in pipelines and ensure gas meets transmission specifications.
Key Components:
- Joule-Thomson (JT) Valve: Reduces pressure to cool the gas and condense heavy hydrocarbons.
- Mechanical Refrigeration: Uses external cooling to achieve dewpoint control.
- Turboexpander: Expands gas rapidly to cool it and extract heavier hydrocarbons.
Use Cases/Industries:
- Pipeline Transmission: Prevents liquid drop-out in pipelines.
- LNG Processing: Ensures only dry, light hydrocarbons enter liquefaction units.
- Petrochemical Industry: Recovers valuable heavier hydrocarbons like pentane and hexane.
Advantages:
- Pipeline Integrity: Prevents hydrate formation and corrosion.
- Efficient Product Recovery: Extracts NGLs for resale.
- Operational Flexibility: Adapts to varying gas compositions.
Challenges:
- Energy Consumption: Cooling methods require significant power input.
- Operational Complexity: Requires precise control of temperature and pressure.
- Infrastructure Requirements: Needs specialized separation and cooling equipment.
Related Terms:
Gas Stabilization, Hydrocarbon Separation, Condensate Recovery
Example:
A pipeline operator uses mechanical refrigeration to lower gas dewpoint and ensure trouble-free transportation.
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Synonyms:
Dewpoint Control, Hydrocarbon Removal, Gas Stabilization
