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H₂S Removal Systems

Drying Skid Layouts

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The High Cost of Poor Gas Quality

Unreliable biogas purification doesn't just risk your equipment—it directly erodes your project's profitability and return on investment.

The Operational Challenge The Financial Impact Our Engineered Solution Guaranteed Outcome
H₂S & Moisture Corrosion Premature engine overhauls, pipeline replacement, unplanned downtime. >99% H₂S Removal via chemical-free biological or regenerative dry scrubbing. Extend critical asset life by years.
Unstable Gas Composition Fluctuating CHP efficiency, lost power generation revenue. Constant-Pressure, Dry Gas (Dew Point ~15°C) from integrated conditioning skids. Ensure stable, revenue-generating operation.
High Chemical OPEX Recurring cost for NaOH, FeCl₃ media, and hazardous waste disposal. Low OPEX Systems with biological processes or regenerative dry media. Dramatically reduce consumable costs.
Complex Multi-Vendor Integration Lengthy site assembly, integration failures, and finger-pointing. Single-Source, Skid-Mounted Design – pre-assembled, tested, plug-and-play. Slash installation time & risk by 70%.
Low-Value Gas Stream High CO₂ content makes biogas unfit for high-value grid or fuel markets. Up to 99.6% Methane Recovery with efficient 3-stage membrane upgrading. Unlock RNG/CNG premium revenue streams.

Our Purification Technology Suite

A modular approach allows us to deliver the precise configuration for your gas composition and end-goal.

Raw Biogas In
▶
1. Desulfurization
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2. Dehydration & Filtration
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3. Membrane Upgrading
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Clean Biomethane / RNG Out
Precision Gas Purification
MODULE 1:

H₂S Removal Systems

A. Biological Desulfurization Tower

  • Zero Chemical Consumption: No NaOH, H₂O₂, or FeCl₃ required.
  • Fully Automatic: Self-regulating process with minimal intervention.
  • Handles High Loads:Effective for H₂S from 1,000 ppm up to 2% by volume.
  • No Hazardous Waste: Eliminates liabilities.

B. Dry Desulfurization Tower

  • Proven Simplicity: Robust, easy to operate.
  • Regenerable Media: Can be reactivated by exposure to air.
Model No. Biogas Flow (Nm³/h) Tower Dia. (mm) Tower Height (m) H₂S Inlet (ppm) H₂S Outlet (ppm)
BW-BIO-500 500 1800 6.5 ≤ 5000 < 50
BW-BIO-1000 1000 2400 7.2 ≤ 5000 < 50
BW-BIO-2000 2000 3200 8.5 ≤ 5000 < 50
High-Efficiency Methane Upgrading
MODULE 2:

Biogas Cold Drying, Booster & Filtration Skid

  • Dehumidification: Dew point of ~15°C (≤80% RH).
  • Filtration: Two-stage (Stainless pre-filter + PP fine filter).
  • Boosting: Roots fan system with inverter control (1+1 backup).
  • Corrosion-Resistant: Wetted parts in 304/316L stainless steel.
  • Low Pressure Drop: Optimized design with ≤2kPa resistance.
Conditioning & Delivery
MODULE 3:

3-Stage Membrane Upgrading System

  • Methane Recovery Rate: >99.6% (Maximizing revenue).
  • Product Purity: Adjustable for grid or fuel (>95% to >99% CH₄).
  • Energy Efficiency: Low 0.26 – 0.29 kWh/Nm³.
  • No Chemicals or Water: Clean, dry physical separation.
  • Containerized: Rapid deployment in shipping containers.

Why Engineers Specify Biowatt-Biogas

Skid-Mounted & FAT Certified

Every unit is fully assembled, piped, and wired. Factory Acceptance Tests (FAT) reduce onsite risk and commissioning time by over 70%.

Industrial Automation & Control

Centrally controlled by Siemens PLCs with remote IoT monitoring. Ensures unmanned operation and easy SCADA integration.

Globally Proven Technology

Our core systems support agricultural and mega-scale industrial plants across 10+ countries. Case studies available upon request.

End-to-End Process Expertise

We understand the complete gas stream—from the digester to the final product. Single-point responsibility for the entire chain.

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