ISO 9001, 14001, 45001 & CE Certified OEM/ODM Manufacturer
China Biogas Upgrading Membrane Supplier & Manufacturer
Pioneering high-selectivity gas separation membranes, advanced DTRO/STRO dewatering trains, and turnkey biomethane (RNG) production modules engineered for extreme global industrial reliability.
Featured Core Equipment
High-Efficiency Membrane Separation & Water Treatment Systems
Pre-engineered, containerized, and rigorously factory-tested membrane systems designed for immediate global deployment.
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Technical Supremacy
Engineering Superiority in Biogas Upgrading & Gas Permeation
Addressing the critical engineering bottlenecks of raw biogas upgrading: methane slippage, competitive adsorption, and high parasitic power consumption.
High CO₂/CH₄ Selectivity Polymers
Fabricated with advanced polyimide (PI) and polyetherimide (PEI) hollow fibers, our membranes achieve an extraordinary CO₂/CH₄ selectivity ratio (α > 55 at 35°C). This ensures high biomethane recovery (>99.5%) while reducing methane loss to less than 0.5%, complying with strict pipeline injection thresholds.
Gas Permeation ScienceLow Specific Power Consumption
Utilizing optimized 3-stage membrane cascade configurations with interstage permeate recycle, the system reduces compression energy down to 0.18–0.24 kWh/Nm³ of raw biogas. This operational profile outperforms conventional water scrubbing and chemical amine absorption in total OPEX calculations.
Energy Efficiency: -30% OPEXChemical-Free & Zero Wastewater
Unlike amine scrubbers that generate degraded solvent waste and corrosive emissions, dry membrane separation operates entirely without process water or chemical consumables. It eliminates secondary effluent treatment and hazardous waste disposal liabilities across the plant lifecycle.
ESG & Decarbonization Compliant
Procurement Strategy
Addressing Global Procurement Needs Across Complex Applications
Engineered to adapt to variable feed gas flows, volatile contaminants, and strict regional regulatory injection limits.
Agricultural Digesters & Manure Biogas
Variable seasonal feedstock and fluctuating CH₄/CO₂ ratios demand resilient turndown capabilities. Our automated multi-bank skid modules maintain stable product purity even under 30% to 110% hydraulic flow variations, protecting project profitability for farm cooperatives.
Landfill Gas Upgrading (LFG to RNG)
Landfill off-gas contains elevated N₂, O₂, siloxanes, and halogenated VOCs that rapidly poison standard polymeric membranes. We integrate high-efficiency regenerative temperature swing adsorption (TSA) and dual chilling pre-trains to guarantee 10+ year membrane life.
Municipal WWTP Anaerobic Digestion
Sewage sludge digesters generate continuous biogas volumes that align with urban heating grids or heavy-duty bio-CNG vehicle fleets. We supply compact, explosion-proof containerized plants with small operational footprints, designed to integrate seamlessly into municipal layouts.
Industrial Digestate & Wastewater Synergies
Beyond gas purification, biogas operators face strict digestate liquid discharge mandates. Pairing our biogas upgrading units with DTRO (Disc Tube Reverse Osmosis) and ZLD evaporation allows operators to achieve simultaneous biomethane production and complete water recovery.
Grid Injection vs. Bio-LNG Liquefaction
Whether producing grid-compliant pipeline natural gas (CH₄ ≥ 96%, CO₂ ≤ 2%) or cryogenic Bio-LNG feed (CO₂ ≤ 50 ppm to prevent freezing in cold boxes), our multi-stage membrane trains are customized to meet exact downstream physical requirements.
Process Engineering
End-to-End Gas Conditioning & Biogas Upgrading Process Train
A reliable membrane separation plant depends directly on upstream protective conditioning. Here is how our engineered systems safeguard process performance.
| Process Stage | Unit Operation | Target Contaminants | Performance Output Metric |
|---|---|---|---|
| Stage 01: Bulk Cleaning | Biological Scrubber / Dry Desulfurizer | H₂S, Particulates > 5μm | H₂S reduction from 5,000 ppm to < 50 ppm |
| Stage 02: Deep Conditioning | Condensate Chiller & Coalescing Filtration | Free Water, Aerosols, Heavy Hydrocarbons | Relative Humidity < 20% at pressure dew point |
| Stage 03: Polishing Adsorption | Regenerative Activated Carbon / TSA | Siloxanes, Halogenated VOCs, Trace H₂S | Siloxanes < 0.05 mg/Nm³, H₂S < 0.1 ppm |
| Stage 04: Compression & Heat | Screw / Reciprocating Compressor System | Pressure boost to 12 - 18 bar(g) | Controlled membrane feed temp (35°C ± 1°C) |
| Stage 05: Multi-Stage Membrane | Hollow Fiber Polyimide Cascades | CO₂, O₂, H₂O vapor separation | CH₄ Purity ≥ 98.5%, CH₄ slip ≤ 0.5% |
| Stage 06: Off-Gas Treatment | RTO / Catalytic Thermal Oxidizer | Residual CH₄ in permeate stream | Near-zero atmospheric greenhouse gas emissions |
Future-Ready Innovation
Technology Roadmap: Next-Gen Membrane Separation
Continuous investment in molecular engineering positions our manufacturing infrastructure ahead of emerging net-zero decarbonization mandates.
Mixed Matrix Membranes (MMMs)
By embedding Metal-Organic Frameworks (MOFs) and porous zeolite nanoparticles into glassy polyimide matrices, our next-gen fibers aim to push past the Robeson upper bound, targeting CO₂ permeance over 120 GPU with selectivity exceeding 75.
Carbon Molecular Sieves (CMS)
CMS membranes derived from controlled pyrolysis of aromatic precursors offer high temperature and solvent tolerance. They operate under harsher industrial conditions while delivering precise molecular sieving capabilities.
Point-Source Carbon Capture (CCUS)
Biogas upgrading offers a concentrated biogenic CO₂ permeate stream. We are integrating secondary membrane concentration stages to extract food-and-beverage-grade liquid CO₂ (>99.9% purity), creating a direct second revenue stream for plant operators.
Predictive Cloud Digital Twins
IoT-enabled telemetry modules continuously track trans-membrane differential pressure, gas compositions, and thermal shifts. Neural network models predict fouling progression and optimize CIP/conditioning schedules before efficiency drops.
Turnkey Execution
Engineering Certainty for International EPCs & Plant Owners
Minimizing offshore integration risk through full factory testing, comprehensive international certifications, and end-to-end commissioning support.
Codes & Global Pressure Directives
Our pressure skids, piping spools, and membrane vessels are designed and certified to ASME Section VIII Div 1, EU Pressure Equipment Directive (PED 2014/68/EU), ATEX Zone 1/2 hazardous electrical standards, and IECEx certifications for safe, compliant installation.
Pre-Commissioned Containerized Skids
Every module undergoes complete Factory Acceptance Testing (FAT) in our Shanghai plant, including helium leak testing, pneumatic pressure tests, and full I/O loop dry runs. Systems arrive plug-and-play, reducing on-site installation schedules from months down to weeks.
Lifecycle O&M & Remote Telemetry
We provide comprehensive lifecycle engineering support: high-purity replacement membrane elements, rapid spare component dispatch, and real-time remote telemetry diagnostics via cloud SCADA links to assist local maintenance technicians anywhere in the world.
Technical FAQ
Frequently Asked Questions: Biogas Upgrading Engineering
Direct technical answers addressing system sizing, selectivity criteria, membrane fouling prevention, and operational economics.
Q1: How does membrane upgrading compare with Water Scrubbing and Amine Systems?
Membrane separation operates entirely dry without water consumables or chemical solvents. It features smaller system footprints, instantaneous startup and shutdown cycles, and zero chemical sludge management. Specific operational costs (OPEX) run 30% to 50% lower than water wash systems, while avoiding the hazardous solvent replenishment costs associated with amine absorption.
Q2: What upstream conditioning is required to protect upgrading membranes?
Polyimide hollow fiber membranes require dry, clean feed gas. Upstream conditioning must reduce H₂S to < 0.5 ppm, siloxanes to < 0.05 mg/Nm³, and liquid aerosol droplet content to absolute zero. Our conditioning trains feature high-efficiency refrigeration chillers, coalescers, and multi-bed regenerative temperature swing adsorption units to ensure long membrane service life.
Q3: Can the membrane system achieve European grid injection standards (e.g., DVGW G260)?
Yes. Our multi-stage membrane configurations consistently produce biomethane with >97% to >99% CH₄ purity, <2% CO₂, <5 ppm H₂S, and compliant dew points under standard pressure conditions, fully satisfying major international natural gas transmission and injection requirements.
Q4: What is the operational lifespan of the membrane modules?
Under recommended feed gas operating temperatures (30°C–40°C) and proper maintenance of upstream adsorption beds, our polymeric hollow fiber membranes have an operational lifespan of 5 to 8+ years. Routine module swap-outs can be completed on-skid in hours with minimal production downtime.
Q5: What data is required to receive an accurate process and price proposal?
Please share your raw biogas production rate (Nm³/h or SCFM), complete gas composition profile (CH₄, CO₂, O₂, N₂, H₂S, and siloxanes), available site electrical power (voltage/frequency), and target product specification (e.g., pipeline grid injection, Bio-CNG transport fuel, or Bio-LNG feed).
Q6: Do you offer containerized, fully pre-assembled skid systems?
Yes. We build standard 20-foot and 40-foot high-cube ISO shipping container systems equipped with thermal insulation, built-in HVAC systems, fire and combustible gas detection systems, explosion-proof lighting, and factory-integrated PLC control cabinets.
Integrated Equipment Series
High-Pressure Membrane, Concentration & Recovery Systems
Engineered for industrial wastewater volume reduction, digestate zero liquid discharge, and process water purification.
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