Biogas Methane Membrane Separation Skid

Integrated skid with multiple membrane stages upgrades biogas by separating methane from CO2, H2S, and water vapor for pipeline-quality RNG. Falls under HTS 8421.39.0140 as gas separation equipment for renewable energy.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
πŸ‡¨πŸ‡³ChinaFree+35.0%35%
πŸ‡²πŸ‡½MexicoFree+10.0%10%
πŸ‡¨πŸ‡¦CanadaFree+10.0%10%
πŸ‡©πŸ‡ͺGermanyFree+10.0%10%
πŸ‡―πŸ‡΅JapanFree+10.0%10%

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

8421.39.01Same rate: 35%

If for chemical absorption-based biogas scrubbing

Wet scrubbers using solvents classify as other purifying apparatus.

8419.60.10.00Higher: 39.2% vs 35%

If integrated with biogas drying functions

Dual drying/separation units under commercial drying equipment.

8479.89Lower: 12.5% vs 35%

If as complete biogas upgrading station

Multi-function biogas plants as other industrial machinery sets.

Not sure which classification is right?

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Import Tips & Compliance

β€’ Specify biogas inlet composition (55-65% CH4) and outlet purity specs

β€’ Certify H2S-resistant membrane materials for hazardous gas handling

β€’ Coordinate with EPA RIN program documentation for renewable credits

Related Products under HTS 8421.39.01.40

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This pressure swing adsorption (PSA) system uses molecular sieves to separate oxygen from ambient air by selectively adsorbing nitrogen, producing high-purity oxygen for medical or industrial use. It falls under HTS 8421.39.0140 as gas separation equipment for purifying and isolating oxygen from air.

Membrane Nitrogen Generator Module

Hollow fiber membrane modules separate nitrogen from air by allowing oxygen and other gases to permeate through semi-permeable membranes under pressure. Classified under HTS 8421.39.0140 for its specialized gas separation function in industrial inert gas supply.

Carbon Molecular Sieve Nitrogen PSA System

This PSA unit employs carbon molecular sieves with precise pore sizes to kinetically separate nitrogen from oxygen in compressed air, yielding high-purity N2 for food packaging and electronics. HTS 8421.39.0140 covers this dedicated gas separation machinery.

Industrial Helium Recovery PSA Unit

Pressure swing adsorption system recovers and purifies helium from natural gas streams or mixed gas exhaust by preferentially adsorbing impurities. Falls under HTS 8421.39.0140 as specialized gas separation equipment for rare gas recovery.

CO2 Capture Membrane Separator

Polymeric membrane modules selectively permeate CO2 from flue gas or biogas streams, enabling carbon capture for environmental control. Classified in HTS 8421.39.0140 for gas separation via selective permeation technology.

VPSA Vacuum Pressure Swing Oxygen Plant

Vacuum pressure swing adsorption plant produces tonnage oxygen from air using zeolite adsorbents, with vacuum regeneration for energy efficiency in steelmaking. HTS 8421.39.0140 applies to this large-scale gas separation apparatus.