The Glass CHP · CHP

Why must biogas be desulphurised?

Ventilation/dehumidification — the silent 24/7 load, with heat recovery. Part of the glass family — like our glass BESS, biogas plant and CHP.

Why must biogas be desulphurised?
Outdoor air Fresh air Heat recovery Heating coil Hall Exhaust
Glass-box in 4 steps

Understand → See it live → What the AI does → Your benefit

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Understand
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See it live
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What the AI does
Your benefit

What is Why must biogas be desulphurised??

H2S above 500 ppm damages engine bearings (sulphuric acid corrodes metal surfaces) and irreversibly poisons oxidation catalysts; biological desulphurisation (2–4 % air into the gas space) followed by an activated carbon filter keeps H2S reliably below 50 ppm.

The plant — right now

connect… · anonymous reference plant · read-only from the process control system, gas volume calculated in-house … m³/h gas mixer … % gas level … % boost pressure … bar excerpt from … plant measurements. To the detailed explanation page with video →

What the AI reads from these values

What the AI reads
  • H2S concentration above 500 ppm as a critical threshold for the corrosion of engine bearings
  • Measured values > 100 ppm as an indicator of impending destruction of the oxidation catalysts
  • Declining efficiency of exhaust gas treatment due to irreversible catalyst poisoning
  • Necessity of a target concentration below 50 ppm to ensure plant availability
Scenario

Monitored: continuous

The scenario: if the methane content drops slowly, the engine begins to knock without an alarm occurring, leading to power reduction and wear. The AI: detects the quality trend early and reports it before the knocking causes damage. It identifies the trend before the limit value is reached.

Why this matters

The reduction of H2S to below 50 ppm prevents costly downtime due to material fatigue and protects the investment in exhaust gas treatment. By using a combination of biological desulphurisation (2–4 % air supply) and activated carbon filters, stable gas quality is guaranteed. This ensures the operational safety of the CHP unit and significantly extends maintenance intervals. Gas volume (m³/h) · methane content (%) → — kWh/h calculation: gas volume × methane content × 9.97 kWh/m³ (calorific value of methane)

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