Hydrogen recovery for ammonia production

Our membranes are specifically engineered to recover hydrogen from purge gas in ammonia synthesis loops, operating reliably in the most demanding environments. Our robust polymeric hollow fiber membranes offer the highest selectivity and hydrogen recovery in the industry, even in the presence of challenging components.

Key technology differentiators

• Superior robustness: We are the only manufacturer offering polymeric membranes that can tolerate high concentrations of dry ammonia, ensuring exceptional longevity and uptime.
• Extreme operating range: Our membranes can withstand transmembrane pressures greater than 90 bar and maintain superior performance across a wide temperature spectrum.
• Selective separation: The technology uses the partial pressure difference to selectively permeate H₂ (fast gas) from N₂, CH₄, and Argon (slow gases), delivering high-purity H₂ back to the loop.

Proven economic and operational advantages

• Increased ammonia production: Maximize your production capacity by efficiently recycling valuable hydrogen back into the synthesis loop.
• Significant cost savings: Minimize inert gas purge and hydrogen losses while decreasing natural gas consumption. No upstream water wash unit is required.
• Simplified operation: A system with low CAPEX, minimal OPEX, and no moving parts ensures high reliability and minimal maintenance.

Our membrane technology

Hydrogen (H₂) is selectively separated from nitrogen (N₂) by permeation through a polymeric hollow fiber membrane. The driving force is the partial pressure difference across the membrane for H₂, N₂ and other gas components. H₂ is the “fast” gas, whereas methane (CH₄) and N₂ are “slow” gases. The pressurized feed gas enters the bundle from the shell side; the nitrogen, methane and argon stay under pressure while the H₂ is collected at a lower pressure from the fiber bore.