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Molecular Sieve Dehydration

Molecular Sieve Dehydration

Molecular Sieve Dehydration Units operate on the principle of adsorption, effectively removing water vapor from natural gas streams. These systems deliver extremely low dew points—essential for cryogenic gas processing—and are ideal for applications requiring high purity and stability.

Compared to conventional glycol systems, molecular sieve technology offers superior performance under higher pressure and temperature conditions, providing consistent drying even with significant flow variations.

Standard Equipment

Inlet Filter Separators
Adsorption Towers (typically two: one adsorbing and one regenerating)
Regeneration Gas Heater
Regeneration Gas Cooler
Regeneration Gas Cooler and Separator
Piping, Switching Valves, and Instrumentation

During operation, wet gas enters the adsorption tower where the molecular sieve desiccant absorbs moisture. Once saturated, the gas is cooled and the condensed water is separated. While one tower is adsorbing, the other undergoes regeneration—heated to around 550°F—to remove the trapped water vapor, ensuring continuous operation and high reliability.

SPEC designs custom molecular sieve dehydration systems tailored to each client’s process conditions, ensuring efficiency, longevity, and seamless integration into existing oil and gas processing facilities.

Why Partner with SPEC Technology

SPEC combines decades of expertise in oil and gas technology with advanced engineering to deliver turnkey molecular sieve dehydration systems that meet international performance and safety standards. Our in-house EPC capabilities—from design to fabrication and commissioning—ensure reliable delivery, optimized energy consumption, and long-term operational stability.