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SERVICES
Two-Stage Gas Purification & Quality Assurance

Two-Stage Gas Purification & Quality Assurance

Two-Stage Gas Purification is essential for transforming raw biogas into high-quality Compressed Bio Gas (CBG) that meets national fuel standards. Our purification system removes harmful gases like Hydrogen Sulfide (H₂S) and Carbon Dioxide (CO₂) using a patented biochemical scrubber followed by membrane or amine-based scrubbing. This ensures methane purity above 96% and safe, clean, consistent gas ready for distribution and use. Our quality assurance protocols guarantee fuel-grade output, aligned with IS 16087 standards.

Key Attributes of Two-Stage Gas Purification & Quality Assurance

    • First-stage biochemical scrubber for H₂S; second-stage CO₂ removal via membrane or amine scrubbing

    • CH₄ > 96%, CO₂ < 4%, H₂S < 5 ppm

    • Works with high-H₂S feedstocks like press mud or spent wash

    • Optimized use of heat, water, and energy

    • Real-time gas quality checks via sensors and analyzers

Two-Stage Gas Purification & Quality Assurance Process

    • Biogas passes through a biochemical scrubber that uses sulfur-eating microbes to eliminate hydrogen sulfide safely and cost-effectively.

    • Membrane Scrubbing: Physically separates methane and CO₂

    • Amine Scrubbing: Uses chemical absorption — ideal where steam is available (e.g., sugar plants)

    • Any remaining moisture or fine particles are filtered using dryers and polishing filters.

    • Gas composition is continuously monitored to ensure methane concentration remains consistent with fuel-grade norms.

Benefits of Two-Stage Gas Purification & Quality Assurance

    • High-purity methane ensures better combustion and engine performance

    • Fully compatible with CNG engines and pipelines

    • Adheres to national quality standards (IS 16087)

    • Safer storage, transport, and end use due to H₂S elimination

    • Reduced fouling and corrosion in downstream systems

    • Lower maintenance costs due to cleaner gas

    • System runs efficiently even with high-impurity feedstock

Conclusion

Purification is the heart of CBG production. Our two-stage purification system delivers reliable, standard-compliant, and clean bio gas across every project. With built-in quality assurance and adaptable configurations, we make sure your gas is ready for the market, always.

  • ✅ Removes impurities and boosts gas performance

  • ✅ Enables compliance with industry standards

  • ✅ Supports variable feedstock compositions

  • ✅ Ensures long-term plant and equipment durability

  • ✅ Designed for cost-effectiveness and operational simplicity

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Purity That Powers Performance

Two-Stage Gas Cleaning

A robust process that removes both H₂S and CO₂, ensuring the gas meets CBG-grade standards.

Biochemical Scrubbing (Stage 1)

Eco-friendly, low-maintenance H₂S removal using microbial action.

Amine or Membrane Scrubbing (Stage 2)

Removes CO₂ efficiently based on the plant’s heat and resource profile.

Real-Time Quality Monitoring

Integrated sensors track gas quality to ensure uninterrupted purity and safety.

IS 16087 Compliance

Ensures all purified gas meets India's official fuel standards for CBG.

Lower Operational Cost

Efficient purification reduces downstream maintenance and increases plant ROI.

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