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Hydrogen Dryers

Hydrogen Gas Dryers - PD Series

Perma Pure LLC

  • Achieves low dew points
  • Removes only water vapor
  • Continuous drying operation
  • Requires no electricity
  • Maintenance-free operation

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Description Vendor

The PD Series Gas Dryers from Perma Pure are advanced membrane-based gas drying systems that utilize proprietary Nafion tubing technology to continuously remove water vapor from gas streams. These dryers achieve very low dew points while operating across a wide range of temperatures, pressures, and flow rates, making them suitable for high-performance and high-flow gas drying applications. The system operates by transferring moisture from the sample gas stream to a counter-flowing purge gas through the Nafion tube walls. This selective permeation process removes only water vapor without affecting other gas components. The dryers function without electricity, moving parts, or routine maintenance, ensuring reliable and passive operation. Available models include PD-50T, PD-100T, and PD-200T, with varying flow capacities and configurations to suit different application requirements.

Use Cases

  • High-performance, high-flow gas drying applications
  • Gas conditioning systems requiring low moisture content
  • Analytical and process gas drying

Capabilities

  • Continuous gas drying using Nafion membrane technology
  • Selective removal of water vapor without altering gas composition
  • Operates with counter-flow purge gas configuration
  • Supports a wide range of flow rates and operating conditions
  • Passive operation without electrical power or mechanical components
Perma Pure LLC Perma Pure LLC, a Halma Company headquartered in Lakewood, New Jersey (in business since 1978 with 100-500 US employees), developed the first Nafion(R) dryers over 25 years ago and manufactures components and devices designed to dry and humidify gas streams using Nafion (a DuPont copolymer highly selective in water removal), branching from analytical/laboratory drying applications into specialty humidifiers for medical gas humidification and humidifying hydrogen for fuel cells. The company's FC-Series Fuel Cell Humidifiers -- described as the industry standard offering unparalleled performance, reliability, and lifetime up to 20,000 hours -- provide consistent, repeatable humidification of air and hydrogen across specified flow ranges for portable, stationary, automotive, and aerospace fuel cell applications, featuring low pressure drop and requiring no power to operate, significantly reducing parasitic load on fuel cell systems, with the FC100 Series compact for portable systems up to 500W and FC600 Series suitable for gas-to-gas humidification systems up to 50kW. Perma Pure's tubular membrane humidifiers selectively transfer water and heat from fuel cell exhaust gases (or liquid water) into fuel cell inlet gases, compatible with Polymer Electrolyte Membrane (PEM) fuel cell systems, with the company's Nafion tubing technology enabling water transport through the membrane wall via a perevaporation process driven by humidity gradients between inside and outside the tubing -- even processing samples containing high concentrations of very corrosive gases like hydrogen fluoride or hydrogen chloride. Offering the FC-Series Humidity Exchangers with flow rates from 10 lpm to 10,000 lpm and providing intelligent product numbering for various sizes, lengths, materials, and port configurations, Perma Pure continues supplying essential humidification technology critical to maintaining proper membrane hydration and performance in PEM fuel cell systems worldwide.
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