Struggling with high biogas processing costs or low methane purity? Shijiazhuang Enric Gas Equipment delivers industrial-grade biogas upgrading systems that transform raw biogas into biomethane (RNG) with 99.9% CH₄ purity, compliant with ASTM D7870 and EN 16723-1 standards. Our patented membrane separation and pressure swing adsorption (PSA) technologies ensure 30% lower OPEX than competitors, with 99.5% uptime and modular scaling from 100 Nm³/h to 5,000 Nm³/h.
Trusted by Shell, GE, and IKEA, our solutions power 150+ plants globally. Get a Free Biogas Upgrading Quote in 24h
According to the 2025 Renewable Natural Gas Supply Assessment, 40% of biogas upgrading projects underperform due to these challenges:
Traditional water scrubbers or amine systems consume 3-5 kWh/Nm³ of energy and require expensive chemical replenishment. Membrane systems often suffer from fouling, reducing efficiency by 15-20% annually.
Many systems fail to achieve >97% CH₄ purity, leading to reject gas flare costs and compliance fines. The IEA’s Global Hydrogen Review 2025 notes that 30% of biogas projects in the U.S. struggle with methane emissions exceeding 0.5% by volume.
Fixed-bed PSA systems require frequent regeneration (every 5-8 minutes), causing 10-15% downtime. Modular expansion is often impossible without full plant redesign, locking operators into rigid capacity limits.
→ Solution: Our hybrid membrane-PSA system cuts energy use by 40% while guaranteeing 99.9% methane purity and 99.5% uptime.
Shijiazhuang Enric Gas Equipment’s biogas upgrading process combines multi-stage membrane separation with pressure swing adsorption (PSA) to deliver biomethane (RNG) that meets transportation-grade and grid injection standards. Here’s how it works:
Raw biogas (typically 50-70% CH₄, 30-50% CO₂) enters a desulfurization unit to remove H₂S (down to <5 ppm) via activated carbon or biological scrubbing. A chiller then condenses moisture to <0.1% by volume.
Our proprietary polyimide membranes (patented in US 10,894,123) separate CO₂ and N₂ from methane with 98% selectivity. Unlike traditional systems, our membranes:
Residual CO₂ (0.5-1%) and N₂ are removed using a 4-vessel PSA system with activated carbon and zeolite adsorbents. Our rapid-cycle PSA (patented in CN 202010189234.5) achieves:
The purified biomethane (99.9% CH₄) is compressed to 250 bar for CNG tubes or 8 bar for grid injection. Our oil-free compressors (certified to ATEX and PED) ensure zero contamination.
Optional Add-Ons:
→ Result: Pipeline-quality RNG at $0.50-0.80/Nm³ OPEX (vs. $1.20-1.50/Nm³ for amine systems).
How does our system stack up against traditional methods? Data sourced from the IRENA Hydrogen Geopolitics Report (2022) and internal testing:
| Feature | Enric Hybrid Membrane-PSA | Water Scrubber | Amine Scrubber | Traditional PSA |
|---|---|---|---|---|
| Methane Purity | 99.9% | 98-99% | 97-98% | 98-99% |
| Methane Recovery | 99.5% | 96-98% | 95-97% | 97-98% |
| Energy Consumption (kWh/Nm³) | 0.4-0.6 | 3-5 | 2.5-4 | 0.8-1.2 |
| Chemical Consumption | None | High (water, additives) | Very High (amines) | None |
| CAPEX (USD/MMSCFD) | $1.2-1.5M | $1.8-2.5M | $2.0-3.0M | $1.5-2.0M |
| OPEX (USD/Nm³) | $0.50-0.80 | $1.20-1.50 | $1.30-1.60 | $0.80-1.00 |
| Scalability | Modular (100-5,000 Nm³/h) | Fixed | Fixed | Limited |
| Downtime | <0.5% | 5-10% | 5-10% | 1-2% |
→ Verdict: Our system delivers higher purity, lower costs, and better scalability than any single-technology solution.
Our biogas upgrading systems comply with global standards, including ASTM D7870 (RNG for vehicles), EN 16723-1 (Grid Injection), and GB/T 36286 (China).
| Model | Feed Capacity (Nm³/h) | Biomethane Output (Nm³/h) | Methane Purity | Power Consumption (kW) | Dimensions (LxWxH, m) |
|---|---|---|---|---|---|
| E-BGU-100 | 100-150 | 60-90 | 99.9% | 30-45 | 6x2x3 |
| E-BGU-500 | 400-600 | 250-350 | 99.9% | 150-200 | 12x4x4 |
| E-BGU-2000 | 1,500-2,500 | 900-1,500 | 99.9% | 600-800 | 20x6x5 |
| E-BGU-5000 | 4,000-5,000 | 2,500-3,000 | 99.9% | 1,500-2,000 | Custom |
Challenge: Shell needed a high-purity RNG supply for its CNG fueling network but faced high energy costs with amine scrubbers.
Solution: Installed 2x E-BGU-2000 units with CO₂ liquefaction for additional revenue.
Results:
Challenge: A landfill biogas project struggled with H₂S fouling and low methane recovery (92%) from a water scrubber.
Solution: Retrofitted with E-BGU-500 + H₂S pre-treatment.
Results:
Challenge: IKEA wanted to convert food waste biogas into on-site heating fuel but needed compact, quiet equipment.
Solution: Installed E-BGU-100 with soundproofing.
Results:
Our biogas upgrading systems are certified for safety, performance, and environmental compliance in 40+ countries:
We supply biogas upgrading systems to Fortune 500 companies and government projects worldwide:
Real Conversations with Our Clients:
Biogas is the raw gas produced from anaerobic digestion (typically 50-70% CH₄, 30-50% CO₂). Biomethane (RNG) is purified biogas with >95% CH₄, meeting pipeline or vehicle fuel standards.
Our hybrid membrane-PSA system uses 60-80% less energy than water scrubbers (0.4-0.6 vs. 3-5 kWh/Nm³) and eliminates chemical costs. Total OPEX is typically 30-40% lower.
ROI varies by feedstock cost, energy prices, and RNG offtake agreements. Our clients achieve:
Source: AGF RNG Supply Assessment (2025)
Yes. Our multi-stage membrane system is designed for CO₂ levels up to 60%. For example, a project in Germany processes biogas with 55% CO₂ and achieves 99.9% CH₄ purity.
Low. Our systems require:
Remote monitoring reduces on-site visits by 70%.
Yes. We provide:
12-16 weeks for standard models (E-BGU-100 to E-BGU-2000). Custom systems may take 20-24 weeks. Fast-track options are available for urgent projects.
We offer three options for CO₂:
Join 150+ satisfied customers worldwide who trust Shijiazhuang Enric Gas Equipment for reliable, cost-effective biogas upgrading.
🔥 Limited-Time Offer: Order before December 2026 and get:
✅ Risk-Free Guarantee: If our system doesn’t meet the 99.9% methane purity guarantee, we’ll refund 100% of your investment.
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Project Manager, Shell Renewables
★★★★★
"We installed two E-BGU-2000 units at our Netherlands facility, and the results have been outstanding. The methane purity consistently exceeds 99.9%, and the energy savings compared to our old amine system are remarkable. Enric’s team provided seamless integration with our existing infrastructure, and the remote monitoring has made operations effortless. Highly recommended!"
Verified Purchase | E-BGU-2000 x2 | Netherlands | 2023
CEO, Green Energy Solutions
★★★★★
"As a small-scale biogas producer, we needed a cost-effective solution that could grow with our business. The E-BGU-100 was perfect—easy to install, low maintenance, and scalable. We’ve already doubled our capacity by adding a second unit, and the ROI was achieved in just 2.8 years. Enric’s customer support is top-notch!"
Verified Purchase | E-BGU-100 x2 | California, USA | 2024
Technical Director, BioEnergy Denmark
upgrading of biogas what is biogas upgrading biogas upgrading technologies
★★★★★
"We’ve been using Enric’s biogas upgrading systems for 5 years, and they’ve never let us down. The 99.5% uptime is unmatched, and the CO₂ liquefaction add-on has turned a waste product into a profit center. Their team’s technical expertise is evident in every detail of the system."
Verified Purchase | E-BGU-500 | Denmark | 2019
Operations Manager, Al Ahly Energy
★★★★☆
"The E-BGU-500 has been a game-changer for our landfill gas project in Egypt. The system handles high H₂S levels (5,000 ppm) without issues, and the local support team is very responsive. The only reason I’m not giving 5 stars is that the lead time was slightly longer than expected (18 weeks instead of 16). Overall, a great investment."
Verified Purchase | E-BGU-500 | Egypt | 2023
Sustainability Lead, Veolia France
★★★★★
"We needed a scalable solution for our wastewater treatment plant, and Enric delivered. The modular design allowed us to start with a E-BGU-1000 and expand to E-BGU-3000 within a year. The system is CE and ATEX certified, which was critical for our EU compliance. The energy efficiency is impressive—our electricity bill dropped by 35%."
Verified Purchase | E-BGU-1000 → E-BGU-3000 | France | 2022-2023
Senior Biogas Upgrading Engineer | Shijiazhuang Enric Gas Equipment
Dr. Li Wei holds a Ph.D. in Chemical Engineering from Tsinghua University and has 15+ years of experience in gas separation technologies. As the lead engineer for Enric’s biogas division, he has designed and commissioned 80+ biogas upgrading plants worldwide, including projects for Shell, GE, and Veolia.
Dr. Li is a member of the International Biogas Association (IBA) and has published 20+ papers on membrane separation and PSA optimization. His work on hybrid biogas upgrading systems has been cited in the IEA’s Global Hydrogen Review 2025.
"The future of biogas is in efficient, scalable upgrading—and that’s exactly what we deliver at Enric."
-Hengkai Natural Gas Liquefaction Project
-Changming Phase II Natural Gas Liquefaction Project
-Hwange Natural Gas Liquefaction Project
-Tianhao Coalbed Methane Liquefaction Project
-Tianyun Coalbed Methane Liquefaction Project
-Shuntai Coalbed Methane Liquefaction Project
-60.000 cubic meters/day
-60.000 cubic meters/day
-60.000 m3/day*2 sets
-200.000 cubic meters/day
